bluetooth based location system sulaiman al awad hani al ruwaili
TRANSCRIPT
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BLUETOOTHBLUETOOTHBASEDBASED
LOCATION SYSTEMLOCATION SYSTEM
SULAIMAN AL AWADSULAIMAN AL AWADHANI AL RUWAILIHANI AL RUWAILI
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OverviewOverview IntroductionIntroduction Technologies Used in Location SystemTechnologies Used in Location System Bluetooth TechnologyBluetooth Technology Different approachesDifferent approaches
Wi-Fi trade offWi-Fi trade off Bluetooth trade offBluetooth trade off
AdvantagesAdvantages EquipmentEquipment Description of algorithmDescription of algorithm
Basic OperationBasic Operation ConclusionConclusion
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IntroductionIntroduction
Proliferation of wireless Proliferation of wireless technologies, mobile computing technologies, mobile computing devices, and the Internet has devices, and the Internet has fostered a new growing interest in fostered a new growing interest in location-aware systems and serviceslocation-aware systems and services
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ObjectiveObjective
To develop an indoor location system To develop an indoor location system based on Bluetooth.based on Bluetooth.
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Technologies and Technologies and Related WorkRelated Work Infrared – Active Badge Infrared – Active Badge
a tag in the form of an Active Badge that emit a unique code
IEEE 802.11 (Wi-Fi) – RADAR IEEE 802.11 (Wi-Fi) – RADAR indoor(~20 m - ~50 m) , outdoor(~100 indoor(~20 m - ~50 m) , outdoor(~100
m-~5000 m)m-~5000 m)
BluetoothBluetooth
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Bluetooth TechnologyBluetooth Technology
Bluetooth is a standard and Bluetooth is a standard and communications protocol primarily communications protocol primarily designed for designed for low power low power consumptionconsumption, with a , with a short rangeshort range , , based on based on low-costlow-cost in each device. in each device.
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Different approaches (Different approaches (indoor indoor
locating systemlocating system)) Wi-Fi (wireless Wi-Fi (wireless EthernetEthernet ) ) BluetoothBluetooth
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Wi-Fi trade offWi-Fi trade off
Expensive hardware Expensive hardware Higher power consumption Higher power consumption Wi-Fi is a replacement only for Wi-Fi is a replacement only for
local area networklocal area network access. access. Wi-Fi requires more configuration Wi-Fi requires more configuration
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Bluetooth trade offBluetooth trade off
Slower connection Slower connection Limited range from the base stationLimited range from the base station Lower security than Wi-Fi Lower security than Wi-Fi
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Frequency RangesFrequency Ranges
They use the same They use the same frequency rangefrequency range, , but employ different modulation but employ different modulation techniquestechniques Wi-Fi use higher power which resulting Wi-Fi use higher power which resulting
in a stronger connection.in a stronger connection. Bluetooth use lower power resulting in Bluetooth use lower power resulting in
lower connection ( still lower connection ( still goodgood for indoor for indoor applications )applications )
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AdvantagesAdvantages Non-line-of-sight nature.Non-line-of-sight nature. Bluetooth exists in many products, such as Bluetooth exists in many products, such as
telephones, printers, modems and headsets telephones, printers, modems and headsets Can be read in less than 100 milliseconds. Can be read in less than 100 milliseconds. Bluetooth simplifies the discovery and Bluetooth simplifies the discovery and
setup of services between devicessetup of services between devices Bluetooth allows multiple devices to Bluetooth allows multiple devices to
communicate with a computer over a communicate with a computer over a single adaptersingle adapter
Cost-effectiveness Cost-effectiveness
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EquipmentEquipment
Reader (Server)Reader (Server) Range up to ~100 metersRange up to ~100 meters Can communicate with up to 7 active devices and Can communicate with up to 7 active devices and
up to 255 inactive devicesup to 255 inactive devices Support Support Received Signal Strength Indicator
(RSSI). (function of distance) (function of distance) Operate at the frequency of 2.4 GHz to 2.4835 Operate at the frequency of 2.4 GHz to 2.4835
GHz range GHz range Administrator (Client)Administrator (Client)
Receive signal, which consists of a unique 7-Receive signal, which consists of a unique 7-character ID, every character ID, every XX seconds for identification seconds for identification
Algorithm computation
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Description of algorithmDescription of algorithm
Servers ( Readers )Servers ( Readers ) Client Client
(Administrator)(Administrator) Tag (Bluetooth kit)Tag (Bluetooth kit)
SERVER
SERVER
SERVER
CLIENTTag
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Basic OperationBasic Operation
The server emits radio signal to sense the tag The server emits radio signal to sense the tag (mobile, or any Bluetooth kit), generate a log (mobile, or any Bluetooth kit), generate a log filefile
and sort the discovered tags with:and sort the discovered tags with: AddressAddress ServicesServices Signal strength ( RSSI )Signal strength ( RSSI )
Every X seconds the server will transmit the Every X seconds the server will transmit the log file to the Admin. log file to the Admin.
Admin. Do some calculations and time Admin. Do some calculations and time comparison comparison
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ConclusionConclusion
We have introduced a system that We have introduced a system that locate mobile devices in indoor locate mobile devices in indoor environmentsenvironments, the system use the RF provided by a Bluetooth network. The system is based on the signal strength received that is transmitted to a central client where the data analyzed and the location is determined.
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Did you Know ?Did you Know ?
Bluetooth was named after a tenthBluetooth was named after a tenth--century king, Harald Bluetooth, King century king, Harald Bluetooth, King of Denmark and Norway of Denmark and Norway
The Bluetooth logo merges the The Bluetooth logo merges the Germanic runes analogous to the Germanic runes analogous to the modern Latin letter H and B: (for modern Latin letter H and B: (for HHarald arald BBluetooth) (Hagall) and luetooth) (Hagall) and (Berkanan) merged together (Berkanan) merged together
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Thank youThank you
Questions ?Questions ?