final year embedded projects
TRANSCRIPT
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WIRELESS SENSOR NETWORK
Wireless Sensor Network Based Home Monitoring System
for Wellness Determination of Elderly
Abstract:
Wireless-sensor-network-based home monitoring system for elderly activity behavior
involves functional assessment of daily activities. In this paper, we reported a mechanism for
estimation of elderly well-being condition based on usage of house-hold appliances connected
through various sensing units. We defined two new wellness functions to determine the status of
the elderly on performing essential daily activities.
The developed system for monitoring and evaluation of essential daily activities was
tested at the homes of four different elderly persons living alone and the results are encouraging
in determining wellness of the elderly. Wireless-sensor-network-based home monitoring system
for elderly activity behavior involves functional assessment of daily activities. In this paper, we
reported a mechanism for estimation of elderly well-being condition based on usage of house-
hold appliances connected through various sensing units.
We defined two new wellness functions to determine the status of the elderly on
performing essential daily activities. The developed system for monitoring and evaluation of
essential daily activities was tested at the homes of four different elderly persons living alone and
the results are encouraging in determining wellness of the elderly.
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Development and Assessment of a Wireless Sensor and
Actuator Network for Heating and Cooling Loads
Abstract:
This paper describes a wireless sensor-actuator network to monitor and manage
thermostatically controlled loads, mainly heating and cooling loads, which accounts for around
50% of the residential electricity consumption. A decentralized system is proposed to modify the
electrical power demand according to a target demand profile and a set of prefixed constraints,maintaining minimum comfort levels and minimizing the infrastructure requirements.
This solution offers the residential customers a flexible, powerful and low-cost tool to
modify their power demand profile, avoiding any additional wiring and extending the wireless
sensor-actuator networks technology towards small customers, with around 30% share of the
global electricity consumption. The proposed system has been implemented and assessed in a
university environment, where heating and cooling loads have been monitored and controlled.
Acquired data are also included in this paper as well as an example of the forced switching-offtime periods applied on the controlled loads, leading to approximately 15% reduction of the peak
power demand.
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Wireless and Pyroelectric Sensory Fusion System for Indoor
Human/Robot Localization and Monitoring
Abstract:
An indoor localization and monitoring system for robots and people is an important issue
in robotics research. Although several monitoring systems are currently under development by
previous investigators, these issues remain significant difficulties. For instance, the pyroelectric
IR (PIR) system provides less accurate information of human location and is restricted when
there are multiple targets. Furthermore, the RF localization system is constrained by its limited
accuracy.
In this study, we propose an indoor localization and monitoring system based on a
wireless and PIR (WPIR) sensory fusion system. We develop a sensor-network-based
localization method called the WPIR inference algorithm. This algorithm determines the fused
position from both the PIR localization system and RF signal localization system, which utilize
the received signal strength propagation model. We have developed and experimentally
demonstrated a WPIR sensory fusion system, which can be successfully applied in localizing
multiple targets based on two robots and two people in this study. With an accurate localization
mechanism for the indoor environment, the provision of appropriate services for people can berealized.
A Wearable Inertial Sensor Node for Body Motion Analysis
Abstract:
A wearable wireless inertial sensor node for body motion analysis is designed and
implemented. A triaxial accelerometer, a biaxial gyroscope, and a yaw rate gyroscope are
employed to sense the accelerations and angular rates of the object attached. These three ICs, a
wireless mote, the power circuit, and a modified printed inverted-F antenna are integrated on a
four-layer printed circuit board. To achieve the compact size for comfortable wearing, the
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printed antenna is deliberately designed as small as possible, while maintaining a reasonable
antenna performance.
The proposed inertial sensor node is also easily adaptable to applications with different
power requirements because of the consideration of the periodic and moving-event wakeup in
the software design. The static characteristics and Allan deviations of the implemented node are
measured and analyzed. The false alarm rate of a moving detection based on Bayes rule is
presented and a threshold is suggested. Finally, the raw data of several body motions are
measured and those behaviors are observed apparently. The proposed inertial sensor node is
compact and easily wearable; hence, it is feasible to be applied to the body motion analysis.
A Wireless Sensory Feedback Device for Real-Time Gait
Feedback and Training
Abstract:
This paper presents a new sensing and feedback system for a personal gait rehabilitation
device based on wireless transmission of ambulation data for real-time sensory feedback for
assistive healthcare. An integrated force-sensing insole was designed, using embedded forcesensitive resistors that were sampled using a microprocessor, which then transmitted the data to
an Android smartphone for presentation to the user.
Experiments were performed to verify that the device captured accurate gait data, and
was able to influence the gait of the subject. In addition, different sensory methods of feedback
were tested to determine their individual efficacy at modulating the gait of study subject. The
results show that the feedback system is capable of influencing the gait of the user, without the
need for direct supervision by a rehabilitation specialist. In addition, a statistical analysis was
performed to establish the reliability and repeatability of the system. From these results, this
feedback system is established as a novel, inexpensive, and effective candidate for use in clinical
rehabilitation of persons with gait abnormalities.
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Wireless Haptic Communication Under Varying Delay by
Switching-Channel Bilateral Control With Energy Monitor
Abstract:
A switching-channel bilateral control with energy monitor (EM) is newly proposed to
realize haptic communication through a wireless network. The varying delay in the
communication line and the situation of duplex operation are considered. In such a system,
human operators on two sides of the master-slave robots system feel the hardness of the remote
environment placed on the contralateral side.
The EM approach is presented to judge the role of the robot (manipulated by an operator
or contacting an environment), which provides a beacon for the switching algorithm. The
position tracking of the system is improved by switching off the channel of force control in the
human manipulated robot. The problem of position drift in traditional methods is overcome.
Disturbance observer is applied to simplify the design of the bilateral control law, and to
guarantee the efficient force switching. Because of improved position tracking and satisfactory
force fidelity, the proposed approach achieves more vivid haptic transmission. By experiments,
the validity is verified.
Thermoelectric Powered Wireless Sensors for Spent Fuel
Monitoring
Abstract:
This paper describes using thermoelectric generators to power wireless sensors to
monitor spent nuclear fuel during dry-cask storage. OrigenArp was used to determine the decay
heat of the spent fuel at different times during the service life of the dry-cask. The Engineering
Equation Solver computer program modeled the temperatures inside the spent fuel storage
facility during its service life.
The temperature distribution in a thermoelectric generator and heat sink was calculated
using the computer program Finite Element Heat Transfer. From these temperature distributions
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the power produced by the thermoelectric generator was determined as a function of the service
life of the dry-cask. In addition, an estimation of the path loss experienced by the wireless signal
can be made based on materials and thickness of the structure. Once the path loss is known, the
transmission power and thermoelectric generator power requirements can be determined. This
analysis estimates that a thermoelectric generator can produce enough power for a sensor to
function and transmit data from inside the dry-cask throughout its service life.
Study on a Multi-Ions Sensing System for Monitoring of
Blood Electrolytes With Wireless Home-Care System
Abstract:
This study developed a multi-ions sensing system that includes pH, potassium, sodium,
and chloride ion sensors with a wireless home-care system. The pH sensor was based on a tin
oxide (SnO )/indium tin oxide (ITO) glass, and the potassium, sodium, and chloride ion sensors
were based on the pH sensor with sensing membrane. The tin oxide (SnO) sensing membrane
was deposited on indium tin oxide (ITO) substrate using a sputtering system. The sensing
membranes of the ion sensors were prepared by mixing poly (vinyl chloride) (PVC), bis (2-
ethylhexyl) sebacate (DOS), ionophores, and additives. According to the experimental results,
sensitivities of the sensors all were over the value 51 mV/decade.
The linear range of pH sensor was between pH2 and pH12, the linear ranges of
potassium, sodium, and chloride sensors all were over from 1 mM to 1 M. Therefore, the multi-
ions sensing system is suitable for monitoring of blood electrolytes. The correlations of the
multi-ion sensors under different test solutions also were discussed. Moreover, this study also
investigated sensors module, portable module, Bluetooth module, personal computer (PC)
terminal, and portable unit of the wireless home-care system. A graphical measurement interface
for data recorded and measurement results displayed was designed by National Instrument Lab-
VIEW software. According to the experimental results, the measurement data by the wireless
home-care system are near the real values. The wireless home-care system could successfully
monitor and transmitted the sensing signals.
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Sensors-Based Wearable Systems for Monitoring of Human
Movement and Falls
Abstract:
The rapid aging of the world's population, along with an increase in the prevalence of
chronic illnesses and obesity, requires adaption and modification of current healthcare models.
One such approach involves telehealth applications, many of which are based on sensor
technologies for unobtrusive monitoring. Recent technological advances, in particular, involving
microelectromechnical systems, have resulted in miniaturized wearable devices that can be used
for a range of applications. One of the leading areas for utilization of body-fixed sensors is the
monitoring of human movement.
An overview of common ambulatory sensors is presented, followed by a summary of the
developments in this field, with an emphasis on the clinical applications of falls detection, falls
risk assessment, and energy expenditure. The importance of these applications is considerable in
light of the global demographic trends and the resultant rise in the occurrence of injurious falls
and the decrease of physical activity. The potential of using such monitors in an unsupervised
manner for community-dwelling individuals is immense, but entails an array of challenges with
regards to design c onsiderations, implementation protocols, and signal analysis processes. Somelimitations of the research to date and suggestions for future research are also discussed.
Sensors for Gesture Recognition Systems
Abstract:
A gesture recognition system (GRS) is comprised of a gesture, gesture-capture device
(sensor), tracking algorithm (for motion capture), feature extraction, and classification algorithm.
With the impending movement toward natural communication with mechanical and software
systems, it is important to examine the first apparatus that separates the human communicator
and the device being controlled. Although there are numerous reviews of GRSs, a
comprehensive analysis of the integration of sensors into GRSs and their impact on system
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performance is lacking in the professional literature. Thus, we have undertaken this effort.
Determination of the sensor stimulus, context of use, and sensor platform are major preliminary
design issues in GRSs.
Thus, these three components form the basic structure of our taxonomy. We emphasize
the relationship between these critical components and the design of the GRS in terms of its
architectural functions and computational requirements. In this treatise, we consider sensors that
are capable of capturing dynamic and static arm and hand gestures. Although we discuss various
sensor types, our main focus is on visual sensors as we expect these to become the sensor of
choice in the foreseeable future. We delineate the challenges ahead for their increased
effectiveness in this application domain. We note as a special challenge, the development of
sensors that take over many of the functions the GRS designer struggles with today. We believe
our contribution, in this first survey on sensors for GRSs, can give valuable insights into this
important research and development topic, and encourage advanced research directions and new
approaches.
Sensor Network Based Oil well Health Monitoring and
Intelligent Control
Abstract:
Most oil pumping units (OPUs) have been using manual control in the oilfield. This
existing oil-pumping system, a high power-consuming process, has the incapability of OPU's
structural health monitoring. In this paper, a sensor network based intelligent control is proposed
for power economy and efficient oilwell health monitoring.
The proposed sensor network consists of three-level sensors: (1) several types of basic
sensors, such as load sensor, angular sensor, voltage sensor, current sensor and oil pressure
sensor, which are the first level sensors (FLS), are used for oilwell data sensing; (2) our
developed intelligent sensors (IS), which belong to the second level sensor, are designed mainly
for an oilwell's data elementary processing, main fault alarm/indication, typical data
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storage/indication, data/status transmission up to the third level sensor (TLS), data/status
transmission between IS, and command transmission down to the OPU motor; and (3) our
developed software-defined (SD) control centers with an embedded database, i.e., the TLS, are
designed for hundreds of oilwells data storage/management, data processing, malfunction
detection, malfunction alarm/indication, stroke-adjustment command transmission down to a
specific IS for power economy and the malfunction report to the maintenance staff via global
system for mobile communications (GSM) short message service (SMS). Experiment results at
the Chinese Petroleum's Changqing Oilfield demonstrate our proposed sensor network based
system.
A Passive Radio-Frequency pH-Sensing Tag for Wireless
Food-Quality Monitoring
Abstract:
We present a new method, suitable for food quality management by wirelessly
monitoring pH level changes in food with a flexible pH sensor embedded in a batteryless radio-
frequency (RF) transponder. The wireless sensor tag includes a flexible pH sensor based on
miniature iridium oxide (IrOx) and silver chloride (AgCl) sensing electrodes integrated on a
deformable substrate, and batteryless wireless communication circuitry. The sensor tag and
reader system is designed to achieve convenient, long-term, and on-demand wireless in situ
monitoring of food quality, especially for large-quantity applications and continuous monitoring
from place of production to retail stores.
Low-cost IrOx sol-gel fabrication process was applied on polymeric substrates to form
the flexible sensing films, and a sensitivity of -49.7 mV/pH was achieved. Inducting coupling
provides electromagnetic energy from the reader to drive the transponder circuits that retransmit
the sensor-data modulated signals back to the reader. The electrochemical potential created by
the IrOx/AgCl sensing electrodes is converted to a modulated frequency and the system achieves
a sensitivity of 633 Hz/pH. The wireless pH sensing system was tested for in situ monitoring of
the spoilage processes in fish meats continuously for over 18 h. The feasibility of wirelessly
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monitoring pH values in fish meats that could be used to identify spoilage remotely has been
demonstrated.
One-to-Multipoint Laser Remote Power Supply System for
Wireless Sensor Networks
Abstract:
A method to use laser to supply power remotely for multinode wireless sensor networks
is proposed in this paper. In the working space of wireless sensor networks, laser is transformed
to a spatial distributed light field with certain uniformity and its wavelength is converted to themost sensitive wavelength of solar cell by the phosphor element. Thus, more wireless sensor
networks nodes can be powered at the same time. A demonstration experiment is carried out, an
yttrium aluminum garnet phosphor element is stimulated by the 3 W 457 nm laser and a uniform
diffused light field with 3 π/4 space angle is obtained.
The average optical energy density is 85 μ W/cm2 at the distance 1.5 m away from the
phosphor surface. An ultra low-power consumption energy harvesting system is designed. Under
the radiation of remote laser power supply, characteristics of the energy harvesting system aretested. The result is that the system can supply 92.1 mJ during 0.7 s which can provide enough
energy for WSN node. Preliminary result of a real-life application in an oil cellar is also given.
As a novel power supply method for wireless sensor networks, it is a good active power supply
candidate for wireless sensor networks when the environment energy field is not strong enough.
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Cooperative Wireless Sensor Environments Supporting
Body Area Networks
Abstract:
Wireless Body Area Network (WBAN) in recent years have received significant
attention, due to their potential for increasing efficiency in healthcare monitoring. Typical
sensors used for WBAN are low powered single transceiver devices utilizing a single channel for
transmission at the Medium Access Control (MAC) layer. However, performance of these
devices usually degrades when the density of sensors increases. One approach to counter this
performance degradation is to exploit multiple channels at the MAC layer, where optimal usage
of the channels is achieved through cooperation between the sensor nodes.
In this paper we propose a cooperative WBAN environment that supports multi-hop
transmission through cooperation involving both environmental sensors and WBAN nodes. Our
solution extends the cooperation at the MAC layer to a cross-layered gradient based routing
solution that allows interaction between WBAN and environmental sensors in order to ensure
data delivery from WBANs to a distant gateway. Extensive simulations for healthcare scenarios
have been performed to validate the cooperation at the MAC layer, as well as the cross-layered
gradient based routing. Comparisons to other cooperative multi-channel MAC and routingsolutions have shown the overall performance improvement of the proposed approach evaluated
in terms of packet loss, power consumption and delay.
Hand-Motion Crane Control Using Radio-Frequency Real-
Time Location Systems
Abstract:
Human operators have difficulty driving cranes quickly, accurately, and safely because
the heavy structure of the crane responds slowly and its payload oscillates. Manipulation
difficulty is increased by nonintuitive control interfaces (such as buttons, levers, and joysticks)
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that require substantial experience to master. This paper presents a new type of interface that
allows operators to drive a crane by simply moving a hand-held radio-frequency tag through the
desired path.
Real-time location sensors are used to track the movements of the tag and its position is
used in a feedback control loop to drive the crane. Unfortunately, crane movements usually
induce large-amplitude payload oscillations. Therefore, an input-shaping control element is used
to limit payload swing. Experimental results on an industrial bridge crane validate the controller
performance.
Embedded System Integrated Into a Wireless SensorNetwork for Online Dynamic Torque
and Efficiency Monitoring in Induction Motors
Abstract:
The system proposed in this paper aims at monitoring the torque and efficiency in
induction motors in real time by employing wireless sensor networks (WSNs). An embedded
system is employed for acquiring electrical signals from the motor in a noninvasive manner, andthen performing local processing for torque and efficiency estimation.
The values calculated by the embedded system are transmitted to a monitoring unit
through an IEEE 802.15.4-based WSN. At the base unit, various motors can be monitored in real
time. An experimental study was conducted for observing the relationship between the WSN
performance and the spectral occupancy at the operating environment. This study demonstrated
that the use of intelligent nodes, with local processing capability, is essential for this type of
application. The embedded system was deployed on a workbench, and studies were conducted to
analyze torque and system efficiency.
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Sensor Network Design for Smart Highways
Abstract:
A unique and efficient system model is proposed for sensor networks to create sensor-
smart highways. The approach first considers various cell geometries encountered with 2-D
roads and then extends the same to 3-D roads. Mathematical relations describing each type of
cell are derived, and the analyses indicate the numbers and positions of sensor nodes needed in
each cell of a certain type. We then propose algorithms for computing the deployment positions
of sensor nodes on roads by describing them as consisting of cells of different geometries. We
also validate the approach by computing a sensor deployment using real geospatial data.
Environmental sensor networks using existing wireless
communication systems for rainfall and wind velocity
measurements
Abstract:
The microwave links that form a wireless communication network (WCN) for a cellularnetwork infrastructure can be considered for an environmental sensor network (ESN). Every
radio link that connects a base station to the core network is a sensor. For such an ESN, the key
challenge is to develop algorithms to estimate the intensity of weather effects that impair
communication performance - first rainfall and wind, and then, humidity, fog, and snow.
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Designing an Adaptive Acoustic Modem for Underwater
Sensor Networks
Abstract:
There is a growing interest in using underwater networked systems for oceanographic
applications. These networks often rely on acoustic communication, which poses a number of
challenges for reliable data transmission. The underwater acoustic channel is highly variable;
each link can experience vastly different conditions, which change according to environmental
factors as well as the locations of the communicating nodes. This makes it difficult to ensure
reliable communication.
Furthermore, due to the high transmit power, the energy consumed in transmitting data is
substantial, which is exacerbated at lower data rates. The main challenge that we address in this
article is how to build a system that provides reliable and energy efficient communication in
underwater sensor networks. To this end, we propose an adaptive underwater acoustic modem
which changes its parameters according to the situation. We present the design of such a modem
and provide supporting results from simulations and experiments.
A Context-Adaptive Multimodal WSN for Energy-Efficient
Gas Monitoring
Abstract:
We present a Wireless Sensor Network (WSN) for monitoring Indoor Air Quality (IAQ),
which is crucial for peoples comfort, health and safety since we spend a large percentage of time
in indoor environments. A major concern in such networks is energy efficiency, because gas
sensors are power-hungry and the sensor node must operate unattended for several years with
battery power supply. A system with aggressive energy management at sensor level, node level
and network level is presented.
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The node is designed with very low sleep current consumption (only 8 A) and it contains
a Metal Oxide Semiconductor (MOX) gas sensor and a Pyroelectric InfraRed (PIR) sensor.
Furthermore, the network is multimodal: it exploits information from auxiliary sensors like PIR
sensors about presence of people and from the neighbor nodes about gas concentration to modify
the behavior of the node and the measuring frequency of the gas concentration. In this way we
reduce the nodes activity and energy requirements, providing a reliable service at the same time.
To evaluate our approach and the benefits of the context-aware adaptive sampling, we simulate
an application scenario which demonstrates a significant lifetime extension (several years)
compared to the continuously driven gas sensor. In March 2012 we deployed the WSN with 36
nodes in a four-storey building and by now the performance has confirmed models and
expectations.
Evaluation of wireless sensor network monitoring for indoor
spaces
Abstract:
Small-scale, medium-term deployments are an important tool when planning to install a
wireless sensor network (WSN) monitoring system. It is vital to assess the software and
hardware reliability of the desired solution in a well specified scenario. Also, it allows the system
designer to evaluate beforehand the radio environment, a critical task in crowded environments
such as buildings. The multitude of walls and large metal objects can produce unwanted effects
such as fading and multi-path reflections while high powered radio devices produce interference
when operating in the same band as the sensor nodes.
This leads to a high packet loss rate and affect battery life through increased number of
packet retransmissions. In this paper we report our results from a week long continues
monitoring of an indoor space. Our focus is on sampling data for temperature, humidity,
barometric pressure and ambient light. We analyze the results and provide experience regarding
future real systems aimed at high spatial resolution measurements of environmental parameters
indoors. Our study concerns sensor data, energy consumption of sensor nodes and radio channel
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characterization. A network sniffer is also employed to provide insight into the behaviour of the
wireless mesh networking protocol. We consider that the relevance of our work can be
highlighted in saved costs associated with maintenance operations and man-hours after a final,
large-scale deployment of WSN instrumentation has already taken place.
Distributed human tracking using pyroelectric sensor
network
Abstract:
This paper presents a distributed human tracking system based on pyroelectric sensornetwork and corresponding tracking algorithm. By using the field of view (FOV) of each sensor,
two nodes of one detection area can detect the localization of target. In the design of tracking
algorithm, a distributed information filter is constructed by using joint probabilistic data
association (JPDA) and consensus method. The simulation and experimental results verified the
validity of tracking algorithm and improved tracking performance after using the proposed
distributed self-calibration.
Design and implementation of a street parking system using
wireless sensor networks
Abstract:
Recently, with the explosive increase of automobiles in China, people park their cars on
streets without following the rules and police has hard time to conduct law enforcement without
introducing effective street parking system. To solve the problem, we propose a SPS (street
parking system) based on wireless sensor networks. For accurately detecting a parking car, a
parking algorithm based on state machine is also proposed. As the vehicle detection in SPS is
absolutely critical, we use a Honeywell 3-axis magnetic sensor to detect vehicle.
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However, the magnetic sensor may be affected by the fluctuation of the outside
temperature. To solve the problem, we introduce a moving drift factor. On the parking lot in
Shenzhen Institutes of Advanced Technology (SIAT), 62 sensor devices are deployed to evaluate
the performance of SPS. By running the system for several months, we observe the vehicle
detection accurate rate of the SPS is nearly 99%. The proposed SPS is energy efficient. The end
device can run about 7 years with one 2400mAh AA battery.
Towards reliable and lightweight communication in
industrial wireless sensor networks
Abstract:
In this paper we address the issues of timeliness and transmission reliability of existing
industrial communication standards. We combine a Forward Error Correction coding scheme on
the Medium Access Control layer with a lightweight routing protocol to form an IEEE 802.15.4-
conformable solution, which can be implemented into already existing hardware without
violating the standard. After laying the theoretical foundations, we conduct a performance
evaluation of the proposed solution. The results show a substantial gain in reliability and reduced
latency, compared to the uncoded transmissions, as well as common Wireless Sensor Network
routing protocols.
Performance evaluation of energy management system in
smart home using wireless sensor network
Abstract:
In this paper we evaluate the performance of Energy Management and Building
Automation Systems in smart environment using wireless sensor network. We describe some
aspects of smart grid and then explain the related communication models of smart meters and
building management or energy management systems in a smart home. We propose three
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models, then we compare these models and we select a model for our test bed. We implement the
selected model in real environment using wireless sensor network. We analyse network delay to
find out whether wireless sensor network is useful or not. With proposed model, we can save up
to 57% in energy cost. Also, we develop In- home display to inform customers about their
energy usage so that they can manage their energy consumption easier.
Multi-channel Wireless Mesh Networks Test-Bed with
Embedded Systems
Abstract:
There are many commercial wireless mesh networks(WMN) products available in the
market but incompatibility issues exist as the method to achieve WMN for each vendor is
different and proprietary. This has led to the research of the embedded solution that implements
the WMN in accordance with the 802.11s draft standard. In this implementation, it allows the
legacy system to connect to the WMN regardless of the platform with the help of the second
channel. Besides that, the multi-channel implementation is also used to distribute the load
between the 2 non-overlapping channels.
The 2 channels are used for the legacy stations to connect to the WMN and the WMN
backbone connection respectively. This paper was written as an explanation on how to build the
embedded version of Free BSD to work as a wireless mesh router with PC Engines Alix 3d2 and
the details of the configurations done. The WMN implementation of the Free BSD 8.2 operating
system (OS) was used and system evaluations were done on the embedded systems.
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Energy Monitoring System Using Sensor Networks in
Residential Houses
Abstract:
The energy consumption of consumer electronics has been increasing over the past half
century. Due to the growing importance of energy saving, many researches about the energy
savings of information and communication technology have been presented. Providing residents
with information on their energy use has become a feasible option to promote energy savings in
the residential sector. In this paper, a home energy management system, particularly an energy
monitoring system using sensor networks, is described. The authors designed and developed a
smart power strip sensor network and evaluated its accuracy and energy saving efficiency.
Modeling and analysis of a solar powered wireless sensor
node
Abstract:
A wireless sensor node powered by solar energy is modeled and analyzed. The sensornode consists of six components: solar panel, maximum power point tracker, input stage,
supercapacitor, output stage, and load. The components are either modeled using equivalent
circuits or characterized by behavior defining parameters. The sensor node model is first
simulated and analyzed using a typical solar radiation and a fixed load current. Results show that
these component models capture their characteristics. Two supercapacitor models, the variable
leakage resistance model and the energy iteration equation model, are compared within the
sensor node model. Their potential impacts on sensor node operation are investigated.
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Design and implementation of industrial network
monitoring protocol for networked industrial sensors
Abstract:
We propose a new industrial network monitoring protocol to monitor spatially distributed
autonomous sensors. The proposed protocol is designed for a monitoring network using low-rate
wireless personal area networks (LR-PANs), and has low resource overheads and low-cost for
devices that retrieve sensor data, which operate on the SoC (System on Chip) with
Microcontroller Unit (MCU), memory and 2.4GHz RF transceiver. The proposed protocol
network is implemented in a monitoring network system that comprises a monitoring server and
industrial monitoring devices such as a gateway and several acquisition devices. In this paper, wehave established a realistic environment for the performance evaluation of the proposed protocol.
Several sets of experiments are conducted to verify the performance of the proposed protocol.
A novel cost-effective architecture and deployment strategy
for integrated RFID and WSN systems
Abstract:
In this paper, we propose a novel architecture for integrated Radio Frequency IDentifiers
(RFIDs) and Wireless Sensor Networks (WSNs) to accommodate an array of applications in a
cost-effective manner. Integration combines the traceability and sensing capabilities of the two
technologies to maximize the effectiveness of the resulting systems. RFID technology extends
the ability of WSNs by tracking otherwise un-sensible objects. WSNs, on the other hand, provide
information on the environment surrounding the node and the ability to transmit in multi-hops to
wider areas.
We propose a novel architecture to integrate these technologies via super nodes that serve
as both RFID readers and relay hubs. The count of the super nodes dominates the cost of these
integrated networks. Thus, it is crucial to distribute these nodes over the layout in a way that
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minimizes their count while ensuring coverage. We employ Integer Linear Programming (ILP)
to achieve a deployment scheme that addresses such constraints. Our approach generated
outstanding results in terms of cost-efficiency when compared to other WSN/RFID integrated
architectures.
Low cost weather station with remote control
Abstract:
This work describes use a PC to control home weather station and visualization
measuring data via applications written in programming language C# with communications viaUSB or RS232. Weather station is capable of measure temperature up to five temperature
sensors DS18B20, wind speed via measuring turbine with optical encoder, the intensity of
illumination via light sensitive element and finally is able to detect an approaching thunderstorm
by measuring atmospheric charge. The station also disposing eight galvanic separation switch
outputs, whose function in the supplied software set to customer requirements. Visualization is
done in the charts for each measured quantity and also in arranged the panel, depicting the actual
situation.
Advances and challenges of wireless body area networks for
healthcare applications
Abstract:
The term wireless body area network (WBAN) is used to describe a network of devices
connected wirelessly for communication on, in and near the body. In this paper, we survey the
current state of various aspects of WBAN technologies that are being used in healthcare
applications. In particular, we examine the following areas: monitoring and sensing, power
efficient protocols, system architectures, routing, and security. We conclude by discussing open
research issues, their potential solutions and future trends.
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Intelligent wireless street lighting system
Abstract:
We propose an innovative wireless street lighting system with optimized management
and efficiency. Wireless communication uses ZigBee-based wireless devices which allow more
efficient street lamp system management, thanks to an advanced interface and control
architecture. It uses many sensors to control and guarantee the optimal system parameters; the
information is transferred point-by-point using ZigBee transmitters and receivers and is sent to a
control terminal used to check the state of the street lamps and to take appropriate measures in
case of failure. The system allows substantial energy savings with increased performance and
maintainability.
The water quality monitoring system based on WSN
Abstract:
The water quality monitoring system is designed for the need of environmental protection
department in a particular area of the water quality requirements. The system is based on the
Wireless Sensor Network (WSN). It consists of Wireless Water Quality Monitoring Network and
Remote Data Center. The hardware platform use wireless microprocessor CC2430 as the core of
the node.
The sensor network is builted in accordance with Zigbee wireless transmission
agreement. WSN Sample the water quality, and send the data to Internet with the help of the
GPRS DTU which has a built-in TCP/IP protocol. Through the Internet, Remote Data Center
gets the real-time water quality data, and then analysis, process and record the data.
Environmental protection department can provide real-time guidance to those industry which
depends on regional water quality conditions, like industrial, plant and aquaculture. The most
important is that the work can be more efficient and less cost.
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In-building lighting management system with wireless
communications
Abstract:
Smart Grid refers to the next generation power grid in which the electricity distribution
and management are upgraded by incorporating advanced communications and capabilities for
improved control, efficiency, reliability and safety. Among all fields covered by the term Smart
Grid such as renewable energies, smart metering, electric vehicles, etc. lighting control in home
and building facilities is one of the Smart Grid aspects which is still using very inefficient
technologies. The energy consumption in lighting can be heavily decreased by applying the new
information and communication technologies.
This paper focuses on the development of a lighting management system making use of
wireless sensor networks and implemented using commercial electronic ballast with DALI
communication protocol. The approach consists of integrating into the master controller device a
wireless sensor network in which any DALI ballast is controlled by a network node.
Experimental results about consumption and the system performance are presented and
discussed.
Design and Implementation of Wireless Obstacle Detection
System for Safe Locomotion
Abstract:
Obstacle detection is one of the important aspects to be considered in the development of
smart assistive devices. The latest mobility assistive devices are equipped with this function as a
safety precaution for the users to avoid obstacles in their path. In this project, a wireless,
miniature, low cost, obstacle detection system is proposed. The system is based on optical
sensors which can detect a wide range of obstacles, such as small objects on the walkway (e.g.,
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toys), large static obstructions (e.g. building wall), as well as stairs and uneven surfaces, and
inform the wearer several times before making contact with the object (e.g., 0.5m, 1.5m and 2m).
The sensors are miniature and are suitable for integrating in the shoe for the wearer to undertake
normal daily activities.
Location Based Services and Museum Information Systems
Abstract:
The development of computer technology, mobile devices and sensor technology during
the past 30 years has continually affected the creation of new applications based on emergenttechnologies. By combining the advantages of established technologies with these new
approaches and furthermore adapting those criteria to different user needs and application
scenarios, including the location of users, we are able to extend existing applications with new
mobile components and services. The main focus of this paper is to describe the design of mobile
multimedia indoor information systems and context-sensitive services based on a RFID sensor
network in museums and passive RFID tags. In order to cover a wide range of applications a
standard system architecture was developed.
A Model Driven Software Framework for Zigbee Based
Energy Saving Systems
Abstract:
While wireless sensor network drives the trend toward low-cost, in many industrial
applications, it is not this factor that impacts on the rapid deployment of products on the markets
but the rapidly changing application environment and design requirements. How to rapidly
construct application software for different design requirements and operate smoothly are major
challenges. An automatic embedded software generation framework that can create and evolve
Zigbee applications is proposed. The framework consists of several major modules: pattern
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extraction, code generation and architecture mapping. Pattern extraction and development are
designed to provide Zigbee application with the benefit of model reuse and modification. SysML
serves as a medium between pattern development and code generation.
State diagrams, class diagrams and sequence diagram help describes a specific
application scenario. This research provides an embedded software development framework that
integrates the heterogeneous readers and sensors interfaces with an optimal energy control model
to enhance the quality of digital home living environments. The framework allows rapid
deployment of the supporting software for a suite of energy control and sensing devices aiming
not only at energy saving but allowing individual residents to monitor their energy use at any
time.
The closely similar pattern of power consumption profiles among hand written code and
model derived code indicate that our tool has successfully completed the goal in synthesizing the
required component codes and function successfully in controlling the comfort level with
minimum amount of energy consumption. The stored energy efficient pattern can be reused at
will for real world application of energy saving deployments.
Metal mine underground safety monitoring system based onWSN
Abstract:
In order to improve the unreliable current situation of metal mine monitoring system, we
put forward a monitoring system which contains both environment monitoring and personnel
positioning based on WSN. Fist of all, we introduce the structure of the system and the meaning
of every component, then we design the hardware of base-station including End-point, Router
and Coordinator and ID card. And then, we discussed which personnel positioning algorithm
should be used in this metal mine. At last, we introduce the GIS management platform and how
does it work on GIS management platform.
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Wireless sensor networks for fire emergency and gas
detection
Abstract:
Environmental monitoring applications require adept networking strategies and reliable
communications to ensure the integrity of their most fundamental operations including the
sensing duties, network-node interactions, and system resiliency to unpredictable events. In this
paper, we propose a fire emergency and gas detection system based on WSNs for both indoor
and outdoor environments. The challenges which are addressed in this paper include:
management of nodes, provision of algorithms, risk modeling and analysis, and Over-The-Air-
Programming (OTAP).
Applied application of sensor networks in underground
mines
Abstract:
This paper presents an applied system architecture of sensor networks for managing air
pollution in the underground mine zones. The system is based on common Wireless Sensor
Network (WSN) protocols and multi-radio node architectures which are used to connect the
underground mining sites with the outside world.
Furthermore, this paper establishes the groundwork for enabling wireless connectivity
between the sensing platforms and the routing nodes using data-forwarding techniques and
initiating long-range links among WSNs. In this paper, we describe the techniques which
highlight common sharing of resources between independent WSNs in order to improve the
network operations including the ability to track real-time data and allowing access to Internet
services.
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Application framework for wireless sensor networks
Abstract:
Wireless Sensor Networks (WSNs) are evolving rapidly towards specialized application
technologies aimed at enhancing monitoring capabilities in the environmental and safety
domains. The recent trend of advancing wireless telecommunications technology and sensor
design suggest that WSNs will soon find its way into our homes, industries, and natural
surroundings. Current WSN research focuses on lowering power consumptions, and providing
rigid network performances in terms of bandwidth availability and data rates. The objective of
this paper is to develop an application framework for implementing a number of environmental
and safety applications. We discuss the major elements of this framework including: Over-The-
Air-Programming (OTAP), communication and network configuration, sensors manageability,
power efficiency, alarm generation, and finally remote connectivity.
Short-range wireless communication based on AVR
microcontroller: Remote controlsystem of aircraft model for example
Abstract:
With the rapid development of the network and the communication technologies, the
demand for wireless communication is increasing. In recent years, short-range wireless
communication had a rapid development and application in all aspects because of its advantages.
This paper, as the aircraft model' remote control system for a example, briefly introduced how to
achieve short-range wireless communication based on AVR microcontroller. In addition, in this
design, to get a longer transmission distance, we design a RF module.
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A modified wireless token ring protocol for wireless sensor
network
Abstract:
The Wireless Token Ring Protocol (WTRP) is a distributed medium access control
(MAC) protocol which features self-organization, self-healing and no center, etc. It also
guarantees fair node access and quality of service (QoS). Due to the enclosed nature of the ring
structure, WTRP is not suitable for scenarios with rapid topology variations, but proved to be a
valuable MAC protocol candidate for wireless sensor networks with relatively stable structure.
This paper presents a modified WTRP with improvements in network structure expansion,
energy saving and transport efficiency enhancement. The modified node joining mechanismexpands the closed loop into node clusters, which enables better coverage; the sleeping scheme
improves power efficiency; while dynamic token hold time adjusting enhances data throughput.
Design of an energy-saving routing protocol in wireless
sensor networks
Abstract:
This paper takes energy-saving into consideration, basing on typical clustering routing
protocol and combining with the optimal cluster-head selection formula, the improved threshold
formula and cluster radios formulas to choose cluster-heads. Applying the proportionality
principle to the forming stage of cluster to make the distribution of cluster even more reasonable;
during the stable stage of cluster, the member nodes in cluster use TDMA to communicate with
the cluster-head node, and cluster-head nodes communicate with base station BS via multi-hop
interrupt communication manner.
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Realization of intelligence monitoring system based on
remote sensor technology
Abstract:
With the continuous improvement of living standards, people's demands on security also
grow with each passing day. In order to achieve safety monitoring on important places or
valuables, a new intelligence monitoring system was designed and implemented. It took the
wireless sensor technology and the embedded control technology as the foundation. At the same
time, it realized the wireless remote communication with GSM mobile communication
technology.
The structure, function and working principle of the wireless remote monitoring system
were introduced. The hardware and software of the system were all designed and realized. It
achieved wireless remote monitoring on important places and valuables finally. Experimental
results show that the wireless remote monitoring system works well and has the stable data
collection and transmission quality. It has a high value for practical application.
ZIGBEE BASED PROJECTS
A Reliable Transmission Protocol for ZigBee-Based Wireless
Patient Monitoring
Abstract:
Patient monitoring systems are gaining their importance as the fast-growing global
elderly population increases demands for caretaking. These systems use wireless technologies to
transmit vital signs for medical evaluation. In a multihop ZigBee network, the existing systems
usually use broadcast or multicast schemes to increase the reliability of signals transmission;
however, both the schemes lead to significantly higher network traffic and end-to-end
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transmission delay. In this paper, we present a reliable transmission protocol based on anycast
routing for wireless patient monitoring.
Our scheme automatically selects the closest data receiver in an anycast group as a
destination to reduce the transmission latency as well as the control overhead. The new protocol
also shortens the latency of path recovery by initiating route recovery from the intermediate
routers of the original path. On the basis of a reliable transmission scheme, we implement a
ZigBee device for fall monitoring, which integrates fall detection, indoor positioning, and ECG
monitoring. When the triaxial accelerometer of the device detects a fall, the current position of
the patient is transmitted to an emergency center through a ZigBee network. In order to clarify
the situation of the fallen patient, 4-s ECG signals are also transmitted. Our transmission scheme
ensures the successful transmission of these critical messages.
The experimental results show that our scheme is fast and reliable. We also demonstrate
that our devices can seamlessly integrate with the next generation technology of wireless wide
area network, worldwide interoperability for microwave access, to achieve real-time patient
monitoring.
A Zigbee-Based Wearable Physiological ParametersMonitoring System
Abstract:
The design and development of a Zigbee smart noninvasive wearable physiological
parameters monitoring device has been developed and reported in this paper. The system can be
used to monitor physiological parameters, such as temperature and heart rate, of a human
subject. The system consists of an electronic device which is worn on the wrist and finger, by an
at-risk person. Using several sensors to measure different vital signs, the person is wirelessly
monitored within his own home.
An impact sensor has been used to detect falls. The device detects if a person is medically
distressed and sends an alarm to a receiver unit that is connected to a computer. This sets off an
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alarm, allowing help to be provided to the user. The device is battery powered for use outdoors.
The device can be easily adapted to monitor athletes and infants. The low cost of the device will
help to lower the cost of home monitoring of patients recovering from illness. A prototype of the
device has been fabricated and extensively tested with very good results.
Speech Codecs for High-Quality Voice over ZigBee
Applications: Evaluation and Implementation Challenges
Abstract:
The ZigBee standard is designed to enable the deployment of low-cost, low-powerwireless sensor and control networks based on the IEEE 802.15.4 physical radio standard.
Despite the low data rates of ZigBee, its use for transmission of voice has been proven to be
feasible.
This article presents the evaluation and implementation of a voice codec performed in
the framework of the Z-Phone project, which targeted the development of a low-cost, ultra-low-
power, long-range, ergonomic wireless headset using ZigBee technology to transmit voice in
full-duplex mode for use with leading PC VoIP programs. In particular, it presents all the criteriataken into account in selecting the most suitable codec, and also the details and performance of
its implementation.
An Enhanced ZigBee Indoor Positioning System With an
Ensemble Approach
Abstract:
This paper presents a framework for ZigBee indoor positioning with an ensemble
approach. This approach exploits the complementary advantages of various algorithms, weights
the estimation results, and combines them to improve accuracy. This is achieved by dynamically
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analyzing the diverse patterns of inputs and combining base positioning algorithms with spatial
dependent weights. The experiments were conducted in a realistic ZigBee sensor network.
Results demonstrated that the proposed approach apparently achieves more accurate location
estimation than the compared methods including the gradient-based search, linear squares
approximation, multidimensional scaling, fingerprinting method, and a multi-expert system.
Correct-by-Construction and Optimal Synthesis of Beacon-
Enabled Zigbee Network
Abstract:
In this paper we develop a formal approach for the synthesis of a cost-effective and
correct-by-construction communication network (focusing on ZigBee wireless networks) subject
to a set of end-to-end communication constraints of latency, bandwidth and error-rate, together
with the constraints of the network protocols and the desired geographical placement of the
network. We also develop a software platform to implement the proposed approach for network
synthesis, and apply it to a practical wireless network synthesis for centralized as well as
distributed estimation application.
Human detection for residential smart energy systems based
on Zigbee RSSI changes
Abstract:
In this article, the device-free human presence detection method based on radio signal
strength variations is proposed. The method exploits the known fact that human body interferes
with radio signals by causing fading and shadowing effects. Introduced irregularities in the radio
propagation pattern indicate possible presence of a human. The proposed method is incorporated
into the existing platform for intelligent residential energy management.
As opposed to conventional solutions which utilize a complex set of sensors for human
detection, the proposed approach achieves the same only by analyzing and quantifying radio
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signal strength variations incorporated in messages exchanged between 2.4 GHz radio
transceivers. One of the key benefits of the proposed solution is the integration of the detection
algorithm into the smart power outlets and smart light switches. Such an approach improves
interactions in smart home systems, enables intelligent power consumption management and low
installation cost.
Evaluation of ZigBee Time-of-Flight-Based Distance
Measurement for Application in
Emergency Underground Navigation
Abstract:
Low-cost ZigBee (IEEE 802.15.4) modules were evaluated as an underground radio
frequency (RF) positioning technology. The work, which was carried out in two tunnels
considered representative of the variety of mining conditions, forms part of a study of location
technologies for use in a navigation device in mines and tunnels following an emergency
incident. Accurate positioning within tunnels was successfully demonstrated over a significant
operating range using time-of-flight measurements on multiple channels and combining the
results using a filtered averaging algorithm.
It was further shown that the technology would continue to provide accurate positioning
information in the presence of RF interference from the types of microwave networks commonly
used in mines and in the presence of metallic obstructions such as machinery or vehicles that are
frequently encountered.
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ZigBee standard in creation of wireless networks for
advanced metering infrastructures
Abstract:
The current grid must be updated and controlled with automated systems that offer the
intelligence of the smart grid. In this task the wireless networks for sensors and actuators are
very important component of the future grid infrastructure, being the “nerve cells” of the entire
system.
The most important player in the smart grid is probably the consumer, that can use the
electricity and at the same time can have its own generation to be feed into the grid. Hence,
metering devices are essential components in the smart grid, monitoring the consumer's behavior
and offering valuable information to the utilities and electric entities that will adapt the
generation to match the consumption in a seamless way.
The ZigBee standard is getting an increased adoption for the creation of cheap wireless
networks that will connect the smart grid devices with each other. Still, there are little or no
works that study the actual installation approaches, minimizing possible obstacles and decreasing
costs. This paper present new field tests that study the integration and installation of ZigBee
capable meters, offering at the same time several installation approaches.
Voice over ZigBee wireless sensor network applications
Abstract:
There are many application areas for wireless sensor networks, such as security, health,
and emergency. Recent research studies show that, voice over wireless sensor network
applications are possible especially for emergency and rescue missions. In this study, by using
6.3 kbps G.723.1 codec, voice over ZigBee wireless sensor networks experiments are made. The
results are examined based on packet loss and MOS voice quality metrics. It is shown that,
acceptable quality voice over ZigBee networks is possible in an indoor linear mesh topology
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wireless sensor network containing up to 4 hops, which are between 10-80 meters. In an outdoor
single hop network topology, ranging between 10-80 meters, acceptable voice quality is
observed up to 60 meters.
Migration from a legacy wireless technology to ZigBee for a
Home Automation market ready system
Abstract:
In the evolving Home Automation (HA) market, several wireless technologies compete
for a place in your home. Technology standards such as Bluetooth, ZigBee, 6LowPan,WirelessHART and others offer hardware solutions to HA products manufacturers. The HA
industry faces now important choices and unknowns when migrating their legacy HA systems to
these new technologies. We migrated - for a Belgium manufacturer - a wireless window shutter
control system to a ZigBee HA system.
This paper presents the challenges encountered and experiences obtained during product
development, manufacturing, and deployment. Migrating an existing HA product to any
technology adds several design constraints to the development cycle of a product. Migrating toZigBee adds more constraints arising from the incompatibility of the ZigBee specification with
the HA manufacturer production, deployment, and marketing practices. Together, these
constraints are non-trivial and act as a barrier for the widespread adoption of ZigBee as the
standard for Home Automation.
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Research of Fire Detecting System Based on ZigBee Wireless
Network
Abstract:
This paper puts forward a strategy of intellectualized fire monitor based on ZigBee
transmission. In this system, a low power, multi-parameter composite fire detection node is used,
which can detect temperature, smoke concentration and CO gas concentration. The hardware and
software implementation are based on 2.4GHz wireless communication chip CC2430. ZigBee
protocol is adopted in the system to form reliable wireless communication. The system uses
fusion theory to handle the data in order to determine whether the fire occurs.
Structural Health Monitoring System of Gantry Crane
Based on ZigBee Technology
Abstract:
Gantry crane is primary handling device in portal work, and also may cause serious
accidences, so it is particularly important to monitor and assess the crane's structural health. Bytaking the gantry crane as a research object, ZigBee wireless network and the components of the
structural health monitoring system based on ZigBee technology are introduced in this paper, and
the testing point position is determined by application of finite element analysis. The structural
health monitoring of the gantry crane is achieved.
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Structural Health Monitoring System of Gantry Crane
Based on ZigBee Technology
Abstract:
Gantry crane is primary handling device in portal work, and also may cause serious
accidences, so it is particularly important to monitor and assess the crane's structural health. By
taking the gantry crane as a research object, ZigBee wireless network and the components of the
structural health monitoring system based on ZigBee technology are introduced in this paper, and
the testing point position is determined by application of finite element analysis. The structural
health monitoring of the gantry crane is achieved.
Structural Health Monitoring System of Gantry Crane
Based on ZigBee Technology
Abstract:
Gantry crane is primary handling device in portal work, and also may cause serious
accidences, so it is particularly important to monitor and assess the crane's structural health. Bytaking the gantry crane as a research object, ZigBee wireless network and the components of the
structural health monitoring system based on ZigBee technology are introduced in this paper, and
the testing point position is determined by application of finite element analysis. The structural
health monitoring of the gantry crane is achieved.
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Design issues in ZigBee-based sensor network for healthcare
applications
Abstract:
IEEE 802.15.4/ZigBee sensor networks support small power consumption and node
expansion compared to other network standards for WSN. Body sensor networks (BSN) require
a number of sensors for sensing medical information from human body, and low power
consumption to monitor a patient's status for a long time. However, ZigBee has limited
bandwidth and is thus hard to support real time data transmission because of the adoption of
CSMA-CA as its medium access control (MAC) protocol.
In this paper, we will analyze the reasonable number of nodes, size of payload and packet
interval for best QoS for such network. It is found that an appropriate MAC parameters setting
can improve the QoS compared to the default setting in IEEE 802.15.4 specification. The
effective data rate, average end-to-end delay and packet delivery ratio are found via simulation
for various network settings. The results are useful for the construction of ZigBee networks for
patient monitoring and care.
A design for wireless access control system based on ZigBee
Abstract:
ZigBee technology brings about the application of wireless communication and data
transformation technology in transformation system due to its low cost and low power
consumption. This paper presents a solution of access control system base on the ZigBee
technology under IEEE802.15.4 standards with the transformation system. The solution of
ZigBee is presented mainly adopting RF chip MC13192 with ATMega128, and its hardware
circuits and structure and working principle are given too. the proposed method is fit for wireless
transformation system for its flexibility, big capacity, extensibility and easily connecting to
network.
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Design of intelligent home appliance control system based on
ARM and ZigBee
Abstract:
This paper introduces the intelligent home appliance control system, the system is
developed through ARM microprocessor, embedded Linux operating system, ZigBee wireless
communication technology and network technology. It gives the overall framework of hardware
and software design, and describes ways to implement the system. User can control appliances
through hand-held mobile terminal.
Design of remote intelligent home system based on ZigBee
and GPRS technology
Abstract:
In this paper, based on ZigBee technology and GPRS a wireless remote and detecting
system for smart home is developed which realized the detecting of the home equipment and the
state of home environment. The system consists of the host control centre and several sub
function modules and software. The host control system includes MC39i module, CC2430
module and STC12C5410 MCU control center. The several sub function modules consists of the
data acquisition module and CC2430 modules.
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The design of ZigBee protocol based mobile node in wireless
sensor network
Abstract:
In order to overcome the defects of static wireless sensor network nodes, such as poor
adaptability, communication disruption, lack of dynamic networking and so on, a kind of
approach to design mobile wireless sensor node is proposed in this paper. Detail hardware
implementation and software design are also introduced. And then together with Laboratory
Virtual Instrument Engineering Workbench (LabVIEW), ZigBee mobile wireless sensor network
is built to verify the feasibility of the design.
ZigBee routing algorithm based on energy awareness and
energy balance
Abstract:
Aiming at the problems of traditional ZigBee tree routing algorithm that node energy
consumption is larger and faster because of heavy transmissions, an improved ZigBee treerouting algorithm based on energy awareness and energy balance was proposed. The neighbor
table and energy balance strategy were introduced to make sure that the routing was locally
optimal by considering energy consumption. The simulation results show that the energy
consumption was reduced efficiently, node energy balance was achieved and the lifetime of node
in the network was extended in this improved algorithm.
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The study of ZigBee networking with wireless sensor
Abstract:
Introduces the ZigBee technology and its protocol stack in this paper. By using TI's
CC2430 to design the hardware of sensor network node, analyses on the principle and process of
ZigBee wireless sensor network building, builds a star network for temperature sensor, and
tracks each nodes through the serial port. Experiments prove that the network nodes working
state is stable.
Wireless underwater mobile robot system based on ZigBee
Abstract:
In this paper, a wireless underwater mobile robot system is designed in order to study the
behavior of Artemia group. A new idea has been presented for underwater mobile robot system
which is consists of two parts, first is the underwater mechanical robot and the second is ZigBee
wireless based mobile robot which controls and moves the first part. By this system different
patterns motion control (Linear, Circular, Zigzag, etc.) has been performed and proved the abilityto control group of robot by controlling the group of Artemia.
Efficient Group Key Management of ZigBee Network for
Home Automation
Abstract:
Traditional network requires group key and session key for sending the encrypted
message for specific group. If group member is changed, server needs to re-distribute the group
and session key. In ZigBee network, the network key can be used for group management. But it
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needs to be encrypted when it is distributed to nodes. In this paper, we propose the efficient
group key management with user authentication protocol in ZigBee network, especially for home
automation, which generates the group key with combination of entity's secret information. This
approach reduces re-distribution of keys with encryption and the storage area for saving the
group and session key.
Centralized Heart Rate Monitoring Telemetry System using
ZigBee WSN
Abstract:
Recent advances in wireless communication standards and medical monitoring system
have made it possible to effectively combine mesh networking with Non-Invasive medical
application which is Pulse Oximeter in order to create reliable, large-scale wireless Network.
This Mesh networking will enable doctors and nurses to observe and monitor a number of
patients simultaneously from one location without being with the patient's physically. This
project is mainly concerned about monitoring patient's condition simultaneously via Wireless
Mesh Network.
Wireless Mesh Network is a network that allows data transmitted to the node's nearest
neighbors and it can be easily maintained as each node are self configuring and self healing. Data
obtained from multiple pulse oximeters will be stored and processed using Arduino-Nano, then
transmitted to a centralized unit, where the information for multiple oximeter will be displayed
simultaneously. The efficiency of data transmission was monitored and verified. Mesh
networking for pulse oximeter had been successfully design to show the active pulse oximeter.
Besides, the data transmit and received by the XBee were accurate and it had been proved
through several observations.
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Design and Implementation of a Family Living Supporting
System Based on ZigBee
Abstract:
For enhancing the self-caring ability of senior citizen, releasing the pressure of the
warding people, a family living supporting system, which is very useful for the paralyzed
patients or some people with mobility difficulties, is proposed. It is composed of the wireless
transmitting unit, the speech recognition module and the network communication part.
A speech recognition processing algorithm is designed to get some command messages
from the user. The system not only uses these commands to control some household equipment,
but also sends some helping signals via wireless network or Internet. If the family members
aren't prompt to respond to these helping messages, these messages will be transmitted by
network communication part to the community service center for assistance immediately. It has
some advantages of low-cost, low-power, high-performance, easy-operation and so on. As a
result, it could be employed as a terminal of health-care of hospital or home.
A Wireless Surveillance and Safety System for MineWorkers based on Zigbee
Abstract:
This paper addresses a cost-effective, flexible solution of underground mine workers'
safety. A module of MEMS based sensors are used for underground environment monitoring and
automating progression of measurement data through digital wireless communication technique
is proposed with high accuracy, smooth control and reliability. A microcontroller is used for
collecting data and making decision, based on which the mine worker is informed through alarm
as well as voice system. The voice system with both microphone and speaker, transforms into
digital signal and effectively communicate wirelessly with the ground control centre computer.
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ZigBee, based on IEEE 802.15.4 standard is used for this short distance transmission between
the hardware fitted with the mine worker and the ground control centre.
The Design of Network Coordinator Based on ZigBee and
GPRS Technology
Abstract:
Aiming at the designed defects of the traditional wireless network node, a kind of
designed scheme of wireless network coordinator based on ZigBee and GPRS technology are
proposed. The system uses LPC2119 as the core and uC / OS - II as operating platform. Itrealizes the establishment and management of ZigBee network, the data communications
between ZigBee network and GPRS network. The system can be used for the need of remote
monitoring occasions.
Remote management and control system for LED based
plant factory using ZigBee and Internet
Abstract:
Recently, intelligent systems for agricultural production are being developed for safe and
low cost food production. Plant factory provide high yield by growing multiple crops and
making efficient use of land and resources. Plant growth is facilitated by maintaining humidity,
temperature, CO2 concentration and light intensity and these factors need to be monitored and
maintained for an automated system. In this paper, we have proposed a control system for a LED
based plant factory consisting of ZigBee wireless mesh network, and remote monitoring via
Internet. Field sensors are installed for monitoring environmental conditions and power metering
and ZigBee mesh network has been deployed for data acquisition from these sensors.
ZigBee nodes transfer the field data to the coordinator node which also serves as a
gateway node providing interoperability between TCP/IP network and ZigBee Wireless Sensor
Network (WSN). A major novelty of the system is the use of LED lighting instead of fluorescent
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lighting due to its low power consumption, long life and useful narrow band. LED lighting
system provides an efficient and economical lighting system that facilitates plant growth by
varying light intensity and frequency according to light conditions and growing requirements and
also helps in reducing production costs and speeding growth. Prototype of the proposed system
has been installed in a small part of greenhouse. Data acquisition and remote management of the
system has shown very satisfactory performance.
Bus Monitoring System Based On Zigbee And GPRS
Abstract:
Presently, public traffic system mainly depends on driver's manual operation, which will
inevitably encounter many problems such as punctuality of the bus's arrival on bus station. Paper
proposes an supervisory system based on GPRS and ZigBee technology, to improve the
operation efficiency of bus monitoring system and realize intelligent transportation system. Paper
introduces the bus monitoring system from the aspect of both hardware design and software
design. System takes it into accounts for the respective advantages and disadvantages of GPRS
and ZigBee, and designs a feasible solution successfully, of practically significant.
Parking spaces detection in indoor environments based on
Zigbee
Abstract:
This paper describes the study about parking spaces detection in indoor environments,
implementing a WSN (Wireless Sensor Network) based on Zigbee technology. Our study
focuses on the analysis of the received power when a vehicle is parked or not, by monitoring the
RSSI (Received Signal Strength Indicator) field defined in the MAC layer as the IEEE 802.15.4
describes. We focus in the analysis of three factors: data processing time, the influence of
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distance in received power and the attenuation effect in the signal when propagates, which