Study on System Update for IoT Platforms

• Main Authors: Ting-Chin Lin, 林廷縉
• Other Authors: Fu-Chiung Cheng
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/az6935

碩士 === 大同大學 === 資訊工程學系(所) === 104 === The number of devices with Internet capability has increased rapidly and there will be billions of IoT devices in the future. Therefore, how to maintain and update billions of IoT devices is becoming a big problem. Most of the traditional embedded devices are updated by wired way and the main purpose of the firmware update is to fix bugs in system or to add new functions in applications. Obviously, this approach is not feasible for the IoT environment because there will have billions of IoT devices in the future to be updated simultaneously. In addition, the current update resources of devices cannot be used to update by those devices made by different manufacturers since major brands of equipment companies use their own private machine to machine protocol. Therefore, in order to use the resources they need to build extra interface to transform update resources, it will also cause an additional burden for updating IoT devices, and thus it is not conducive to build IoT ecosystem. The contributions of this thesis are as follows: (1) Implement low-cost IoT devices OTA (over the air) update system. (2) Use international standards, CoAP protocol, to control device update. (3) Define remote update resources that meet IPSO standard. (4) Build a software and firmware OTA update system for NodeMCU low-cost IoT platform. (5) Use TLS security mechanism to protect IoT devices in update processes. (6) Implement IoT update cloud by MQTT. We exploit NodeMCU IoT platforms to implement IoT devices update, and our system can be applied in public facilities of smart building, central air conditioning, access control system, fire alarm system and monitoring system.