Post on 19-Jan-2016
2014. 09
Communication protocols forcontrolled device in HES
ⅠⅠ Background
ⅡⅡ Problems
ⅢⅢ Need for a new protocol
Contents
Protocol overviewⅣⅣ
ConclusionⅤⅤ
3
Controlled devices in HES
Internet
Light
Wallpad
CurtainBatch
circuit breakerThermostatMeter
Boiler
Door lockGas valve
Residentialgateway
Airconditioner Security
Ventilationfan
StandardTargets
Background
: Wireless : Wired
4
Interoperability issues between variety device vendors
Devices must be developed whenever the counter devices are changed.
Development period would be longer.
After HES setting up with self made protocol, new vendor hardly can join the existing
HES.
Aftermarket and consumer market can not be formed.
Replacements can not be found when the devices break down.
Also, the residents want to change the devices on their personal preferences.
Detached house owner want to set up DIY HES.
Problems
5
Need for a new protocol
Protocol requirement
Be light for poor resources
Be simple and easy
Be inexpensive for implementation
Light
Doorlock
Gas valveAir
conditionerSecurity Boiler
CurtainBatchcircuit breaker
Thermostat Meter
Ventilationfan
Wallpad
Simple devices with poor resourcesby small companies
Complex devices with rich resourcesby large company
6
Protocol overview
Launching HES standard forum(since 2005)
Goal : Development of communication protocols reflecting the real HES
Members : 30 device vendors
Achievements : 12 Voluntary standards
Standardization body : Telecommunications Technology Association(TTA)
Next stage : Korea Standards and International Standards
Current status
Implemented by 20 device vendors.
Development of conformance test tool and interoperability test specifica-
tion is in Progress.
National testing and certification system will be set up based on ISO
17025/Guide 65.
LightDoorlock
Gas valve Airconditioner Security Boiler CurtainBatch
circuit breakerThermostatMeter Ventilation
fan
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Protocol overview
Protocol stack
Message format
Serial Communications(RS-232, RS-485 etc.)
802.15.4 Layer 1 ~ 2
Protocol for HES Layer 7
Header
De-vice ID
De-vice Sub-ID
Command Type
Length Data XOR Add
sum
1 Byte 1 Byte 1 Byte 1 Byte 1 Byte Vari-able
1 Byte
1 Byte11 Devices Single,
GroupCharacteristic,
Status,Control
Datalength
Error,Control,
Reserved
0xF7 Message error check
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Protocol overview
This voluntary standards includes :
Minimum configurations of communications
Message sequence and timing
Error handling
Cabling and terminal register
Examples
Main Device Controlled Devices1. Characteristic request
2. Characteristic response
3. Status request
4. Status response
5. Control request
6. Controlled status response
Request time : Min 10ms
Response time : Min. 10ms, Max. 15ms
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Conclusion
Advantages of this standard
Light and suitable for poor resource(ex. Microcontroller based on Tiny OS)
Simple and easy
Low development cost
This proposed standard is verified for 5 years by 20 vendors.
Once conformance testing and certification system set up, it would be imple-
mented widely.