中国科学院沈阳自动化研究所 high reliable industrial wireless sensor network shenyang...
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![Page 1: 中国科学院沈阳自动化研究所 High Reliable Industrial Wireless Sensor Network Shenyang Institute of Automation Chinese Academy of Sciences Haibin](https://reader036.vdocuments.site/reader036/viewer/2022081416/56649e0b5503460f94af29f5/html5/thumbnails/1.jpg)
中国科学院沈阳自动化研究所 http://www.sia.ac.cn
High Reliable Industrial Wireless
Sensor Network
Shenyang Institute of AutomationChinese Academy of Sciences
Haibin Yu
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Outline
• Introduction of SIA WSN group
• Industrial Wireless Sensor Networks– Why Wireless– Challenges– Our Solutions– Future Applications
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
WSN group of SIA
• Founded on 2003• People
– 3 Professors– 5 Associate Professors– 6 Assistant Professors– 12 Ph.D Students– 4 Master Students
• Active Member– Zigbee Alliance– ISA SP100
• SIA is host unit of the working group of Chinese Industrial Wireless
Communication Standard for Measurement and Control
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Research Areas
CSMA MAC TDMA MAC Hybrid MAC
Data Centric RoutingGeographic Routing
Time Synchronization LocalizationDistributed Data
Processing
Technology Research
Applications Research
Building Automation
Asset TrackingEnvironment Monitoring
Industrial Automation
Sensor Network Testbed
Atmega128/CC1000Atmega128/CC2420 Msp430/CC2420
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Our Testbed
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Project: Surveillance Systems
• To detect and track vehicle movement• Funded by NSFC
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Project: Secure Container Sensing and Monitoring System
• To detect intruders & record.• Funded by China International Marine Containers LTD.
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Project: Greenhouse Environment Monitoring System
• To continuously gather environment information for automatic control.
• Funded by NSFC
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Our Research Approach
• Research from a “system” view– Imagine a plausible future– Create an approximation of that vision
using technology that exists.– Measure the distance between ideal and
reality– Solve the problems
• Empirical experiments• Quantitative measurement and analysis• Analytics and Foundations
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
The Tomorrow WSN
• Replacing most wired sensor and actuator systems
• Characteristics– Wired-like reliability– Years’ life with battery power– Guaranteed performance
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Where is the Bar?
99% x 10uA + 1% x 10mA => 110 uA is baseline, 20 uA is research goalThe idle listening problem!
Lifetime
PerformanceThe distributed multi-hop resource allocation problem!
IEEE 802.15.4 superframes/beacon is broken, Hybrid TDMA/CSMA MAC for Mesh Topology will be dominant MAC
ReliabilityThe vulnerable wireless channel and fallible platform problem!
Networking Intelligence to improve reliability & Safe TinyOS
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Our Cut-In Point
High Reliable Industrial Wireless Sensor Network
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
The Opportunity of WSN in Industrial Automation
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
The Opportunity of WSN in Industrial Automation
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Technical Requirements
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Industrial Environment
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Harsh Environment challenge RF
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
• Self-organizing high reliable Mesh network
– Frequency diversity to enable transmission to
“hop” across all available channels and navigate
interference
– Path diversity with multiple parents for each node
to navigate physical obstruction
– Time synchronized transmission to guarantee
retries within deadline
SIA Solutions – Embedded Networking Intelligence
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
SIA proposal for ISA SP100
• Presented at ISA SP100 CFP meeting
IEEE 802.15.4 2.4GHz Radio
Channel Hopping
TDMA/CSMA Hybrid MAC
Mesh Routing
Man
ag
em
en
t
Decentralized Network
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Time Synchronized Channel Hopping (TSCH)
• Combination of DSSS and FHSS
– All devices perform synchronized channel hopping along the same CH sequence.
– Neighbor devices within two-hop radio range operate on different channels in each CH slot by choosing a specific CH start point when joining the network
– In each CH slot, Sender jumps to the receiver’s operating channel to transmit packet using CSMA/CA algorithm
Channel 0
Channel 1
Channel 2
Channel 4
.
.
.
A
B
C
D
A - >C
A - >B
B - >D
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Benefit of TSCH
• Take advantage of the multi-channel capability of 802.15.4 radio– Coexistence with other wireless devices in the same band
• CH can sidestep channels being interfered– Increases the bandwidth utilization
• Reduce the size of the conflict zoneChannel Hopper
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
A Hybrid CSMA/TDMA MAC
• Components– Slot
• a unit of time of fixed duration used to send or receive one packet and an accompanying acknowledgement.
– Frame• Comprising a set of slots.• On the basis of 802.15.4 superframe• Including CAP and CFP
– Cycle:• A collection of frames repeating in time.• The number of frames in a given cycle is determined b
y the latency requirement of time-driven traffic.• The Network may contain several concurrent cycles of
different sizes
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Frame Structure
• A long CFP and a short CAP• CFP
– Some slots is assigned to be active according to the transmission schedule for time-driven traffic.
– Router will be sleep in other slots.• CAP
– Router will keep active for event-driven traffic, time synchronization and routing maintenance.
FrameCFP CAP
Inactive Slot
Active Slot
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Cycle Structure
• Task:
• Routing:
• Transmission Schedule– Assume the duration of a frame is 2 second.
A B1 packet/ 10 second
A A1 A2 B
Cycle
Frame 1 Frame 2 Frame 3 Frame 4 Frame 5
A A1 A1 A2 A2 A3
A2
A3 B
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Multi-path robust routing
• Each device has at least
two parents
– All neighbors who are
nearer to the gateway than
me can be the next-hop of
my upstream route.
– If one next-hop fails , other
candidates can replace to
be in charge of forwarding
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Network Manager
• Functions of Network Manger
– Network forming and configuration
– Time slot scheduling and channels
management
– Routing management
– Network status diagnosis and
optimization
– Security management
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Distributed Network Management
• Coordination among local
managers
– the network’s resources
are divided and
allocated to distributed
local managers
• Now
– Centralized coordination
• Future
– Local coordination
Centralized Manager
Local Manager
Local Manager
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Demo System
• A 20 nodes - Field Network– A component of fluidized bed boiler control system– Consists of 10 Wireless Temperature Transmitters
and 10 Wireless Pressure Transmitter.
• Running from 2007/12/30 to Now
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Future Directions
• these industries that wireless technology offers potential
solutions to many of the problems associated with
deploying sensors in areas previously thought unsuitable
or too expensive for a network of sensors.– context dependent anticipatory maintenance and
system health monitoring can now be addressed at the plant or enterprise level
• paradigm shifts in sensor deployment philosophy.– process flow-through sensors
– peel-and-stick devices
– embedded-and-shipped systems
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Killing Application - PAM
• Monitor asset health, typically sensing in real time• Assess to predict potential problems• Optimize maintenance and operations decisions
SenseAssess
Decide
Act
•Wireless sensors•Wired sensors Virtual sensors•Historians
•Predictive analytics•Condition monitoring•Trending
•Preventative maintenance•Predictive maintenance•Run to failure•Reliability-centered maintenance
•Enterprise Asset Management (EAM)•Computerized Maintenance Management Systems (CMMS)
Feedback / Improve
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
An Example
• Condition monitoring (motor, compressor)
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Wireless Enabled PAM Benefits
-60 -40 -20 0 20 40
Unplanned Breakdowns
Spare Parts Inventory Costs
Production Downtime
Product Defects
Plant Availability
Workforce Efficiency
Asset Performance
% Improvement Beyond Maintenance
Source: ARC Advisory Group
Huge Opportunity for Users to Improve
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中国科学院沈阳自动化研究所 http://www.sia.ac.cn
Thank You!