mobile dependable wireless systems in space applications · 2014-01-08 · 8 honeywell...
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Mobile Dependable Wireless Systems in Space Applications
Haowei Bai, Ph.D.Communications DPT Lead
Human Space Enterprise Team
Randy Black Integrated Autonomous Systems IPT Lead
Human Space Enterprise Team
Space ApplicationsHoneywell Aerospace19019 N. 59th AvenueGlendale, AZ 85308
CANEUS/NASA Fly-By-Wireless for Aerospace Vehicles Workshop March 28 2007, Grapevine, Texas, USA
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Agenda
• Introduction- Network centric approach- Wireless networks
• Our big picture – wireless networking architecture for aerospace
• Reduce our ideas to practice – Honeywell wireless virtual backplane (mobile dependable wireless distributed system) for integrated autonomous and robotics systems
• Summary
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Why Network is Important?Po
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Network Centric
5th Generation Network-Centric Architecture today
• Benefits of network centric approachfor avionics Local Area Network:
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Autonomous Assembly in Space
C3I for Constellation Systems
Surface Mobile Networks for human and robots
Autonomous Rendezvous & Docking
Autonomous Assembly in Space
C3I for Constellation Systems
Surface Mobile Networks for human and robots
Autonomous Rendezvous & Docking
• Moving toward network centric approach for space Wide Area Network:
Why Network is Important? (Cont’d)
“…24 hours per day, 7 days per week (24/7) coverage at the mission site through the duration of the mission is a requirement. Furthermore, it was decided that 24/7 global availability should be provided…” -- NASA’s Exploration Systems Architecture Study, Chapter 4 Lunar Architecture
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The Future Role of Networking
• It is a super glue!
Fault Tolerant Computing
Distributed Computing
Real-time Embedded Systems
Real-Time Operating System
and Software Architecture
Highly R
eliable C
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Sensing and Data Fusion
System
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Computer Networks (wired, wireless, mobile)
Reconfigurable Computing
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• Wired networks need more systems engineering (i.e., architect it for specific application against program costs, schedule and staffing).
• Wireless networks need more research and development.
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Future Wireless Networks• Looking into future, wireless networks offer many unique benefits:
- Wiring costs and weight (i.e., take off or launch costs).- Mobility that wired networks do not offer.- Easy for upgrade and reconfigurations.- Only choice for hard-to-reach places using wires, e.g., rotating engine shaft,
communication on the lunar surface, etc.• On the other hand, it has many “unknowns”:
- It has never been certified.- Power supply (battery, power scavenging, power line?)- Interference to and from existing onboard avionics.- Break the law of Byzantine fault tolerance where independent channels are needed –
wireless links typically share the same RF spectrum.- Signal propagation model is unique to specific environment, thus hard to mathematically
prove.
Wired networkWireless network
In-space assembly Sensing
Backup for existing wired network
Space C3I
Sensor
FADEC
Lunar data grid
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Measure of Effectiveness for Wireless in Aerospace
• How do you design a network for aerospace applications that satisfies:
- Information integrity- Subsystem and system reliability (e.g., tolerate two independent
simultaneous faults).- System availability- Costs (development and recurring)- Performance (high throughput, deterministic, fair) in relevant
environments- Certification (e.g., can you mathematically prove?)- Maturity- Scalability- Security- Mobility- …
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Research Topics in Wireless Networking• For aerospace applications that are willing to benefit
from wireless networking technologies: - How does a network autonomously find neighbor devices (a computing host, a
spacecraft), join and leave a network?- How to tolerate long delay?- How to multiplex different traffic with different QoS in an ad hoc multi-hop
configuration?- How to gain full control of the network performance (determinism for safety)?- How to intelligently and dynamically configure the link? For instance, spectrum
(to mitigate the impacts of space radiations)?- What is the best architecture to integrate all space elements, hierarchical,
traditional client-server, or flat P2P? (satellites, CEV, LSAM, EDS, ISS, habitats on the lunar surface, rovers and robots on the lunar surface, astronauts on the lunar surface, pre-configured wireless sensors on the lunar surface, etc.)
- What is the best architecture that is reconfigurable (spectrum, QoSrequirements, protocols, etc.) for each specific mission?
- Most importantly, how to integrate solutions to all above issues into a network that still satisfies requirements such as those (integrity, reliability, costs, etc.) in the previous slide?
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Agenda
• Introduction- Network centric approach- Wireless networks
• Our big picture – wireless networking architecture for aerospace
• Reduce our ideas to practice – Honeywell wireless virtual backplane (mobile dependable wireless distributed system) for integrated autonomous and robotics systems
• Summary
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Wireless Networking Architecture – The Big Picture
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Example 1: Wireless VHM Sensors
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Example 2: Wireless Backup Avionics Data Network
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Agenda
• Introduction- Network centric approach- Wireless networks
• Our big picture – wireless networking architecture for aerospace
• Reduce our ideas to practice – Honeywell wireless virtual backplane (mobile dependable wireless distributed system) for integrated autonomous and robotics systems
• Summary
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A Little Background – Honeywell Integrated Modular Avionics (IMA)
• Virtual Backplane™ is the key to ultimate flexibility:- A system where all information is available to every aspect of the system
Includes I/O or computationally derived data
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A Little Background (Cont’d) -- System of Systems
• Integrated Systems architecture supports reconfiguration- Individual systems are coupled through fusion of their individual Virtual
Backplane™ elements- Several free-flying elements fuse into a new combined configuration
An updated system is achieved through predetermined, yet dynamic, re-configuration of individual element configuration tables
An updated system is achieved through predetermined, yet dynamic, re-configuration of individual element configuration tables
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Honeywell Wireless Virtual Backplane™
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• With wireless Virtual Backplane™, multi-robot collaboration becomes a single avionics control system.
First successful implementation of IMA principles in Boeing 777
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Mobile, deterministic, fault tolerant, reliable wireless communication
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Mobile Dependable Wireless for IMA Controlled Robotics
• Multiple small robotics platform collaboration as a single avionics system.
• Controlled by Honeywell 5th
generation IMA avionics architecture.
• Enabled by mobile dependable wireless technologies that can meet Honeywell Primus virtual backplane requirements.
Operational View
Architectural View
Operating System & Middleware
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Virtual Robots
Base station
Robot 1
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Mobile, deterministic, fault tolerant, reliable wireless communication
Time and Space Partitioning
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What Can We Eventually Do?
• Modular Integrated Control of Mobile Autonomous Robotics systems
Scenario 2: The whole integrated wireless IMA system hands-off from one coverage zone to another.
Scenario 1: An IMA controlled individual robot within an wireless virtual backplane does not have to maintain continuous connectivity with the master robot.
“…24 hours per day, 7 days per week (24/7) coverage at the mission site through the duration of the mission is a requirement. Furthermore, it was decided that 24/7 global availability should be provided…”
-- NASA’s Exploration Systems Architecture Study, Chapter 4 Lunar Architecture
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Our Demo: Wireless Networks for IMA Controlled Robotics
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Summary of Deterministic and Anti-jamming WirelessJoint Effort with Honeywell Labs, HTSL, and Honeywell Commercial Aircrafts
Currently at TRL 7
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Honeywell Current Status on Wireless Virtual Backplane
Technology Nuggets Alignment with customer CTQs
TRL Goal and
ScheduleEnable new capability through distributed framework
TRL 7 (Sep 2006)
TRL6 (Dec 2006)
TRL 7 (Dec 2007)
TRL 6 (Aug 2008)
Enable new capability through distributed framework
Fault tolerance Enable new capability through distributed framework
Dependable fault tolerant wireless to be developed in 2007.
Seamless (low latency, low loss rate) handover --enables mobility
Enable new capability through heterogeneous framework
Working with University of Oklahoma to develop individual node handoff and subnetworkseamless handoff.
Overall TRL Risk for Honeywell
Wireless virtual backplane (dependable mobile wireless distributed system)
Deterministic
Anti-jamming/interference
IEEE 802.15.4 (Zigbee) based deterministic wireless demonstrated in 2006.
Proof-of-concept adaptive channel hopping anti-jamming wireless demonstrated in 2006.
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Agenda
• Introduction- Network centric approach- Wireless networks
• Our big picture – wireless networking architecture for aerospace
• Reduce our ideas to practice – Honeywell wireless virtual backplane (mobile dependable wireless distributed system) for integrated autonomous and robotics systems
• Summary
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Summary
• Wireless technologies offer many unique benefits for aerospace applications. However, commercial wireless technologies do not satisfy requirements of aerospace applications.
• With success and experience in many aerospace programs, we advocate to tackle this problem from a network-centric architecture point of view (as opposed to traditional embedded system’s), and have proposed a configurable architecture that is compatible with commercial wireless networking principles.
• With the synergy across Honeywell (Honeywell Labs, Honeywell Commercial Aircrafts, Honeywell Technology Solutions), we at Honeywell Space Applications have prototyped and demonstrated a proof-of-concept wireless virtual backplane for collaboration of multipleautonomous and robotics systems.
• Our goal is to have a multi-robot collaboration platform interconnected by our wireless virtual backplane, which is controlled by Honeywell IMA architecture as if it were in a traditional wired avionics platform.
Thanks for your attention!
For more information, please contact:
Dr. Haowei Bai: [email protected], 602-822-3168Randy Black: [email protected], 602-822-3594