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2014. 09

Communication protocols for controlled device in HES. 2014. 09. Contents. Ⅰ. Background. Protocol overview. Conclusion. Ⅱ. Problems. Ⅳ. Ⅴ. Ⅲ. Need for a new protocol. Background. Controlled devices in HES. Air conditioner. Gas valve. Light. Security. Door lock. Standard

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2014. 09

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  1. Communication protocols for controlled device in HES 2014. 09

  2. Contents Ⅰ Background Protocol overview Conclusion Ⅱ Problems Ⅳ Ⅴ Ⅲ Need for a new protocol

  3. Background • Controlled devices in HES Air conditioner Gas valve Light Security Door lock Standard Targets Internet Residential gateway Boiler Wallpad Batch circuit breaker Ventilation fan Thermostat Meter Curtain : Wireless : Wired

  4. Problems • 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.

  5. Need for a new protocol • Protocol requirement • Be light for poor resources • Be simple and easy • Be inexpensive for implementation Air conditioner Boiler Gas valve Security Door lock Ventilation fan Light Wallpad Meter Thermostat Curtain Batch circuit breaker Simple devices with poor resources by small companies Complex devices with rich resources by 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 specification is in Progress. • National testing and certification system will be set up based on ISO 17025/Guide 65. Gas valve Air conditioner Light Security Door lock Boiler Ventilation fan Meter Thermostat Curtain Batch circuit breaker

  7. Protocol overview • Protocol stack • Message format Protocol for HES Layer 7 Serial Communications (RS-232, RS-485 etc.) 802.15.4 Layer 1 ~ 2 0xF7 11 Devices Single, Group Data length Message error check Error, Control, Reserved Characteristic, Status, Control

  8. Protocol overview • This voluntary standards includes : • Minimum configurations of communications • Message sequence and timing • Error handling • Cabling and terminal register • Examples Main Device Controlled Devices 1. Characteristic request Response time : Min. 10ms, Max. 15ms 2. Characteristic response Request time : Min 10ms 3. Status request 4. Status response 5. Control request 6. Controlled status response

  9. 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 implemented widely.

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