earticle

영어

This paper designed and analyzed the communication protocol for the data communication between the IOT device and the middleware server of the IOT based Cold Chain Monitoring System. In this regard, we have referenced the CoAP Protocol Model of IETF CoRE WG, and analyzed and designed the process status flow, data flow and frame format of the IOT device (IOTD) and the middleware server. In order to test the effectiveness of the proposed Cold Chain Communication Protocol, we have produced the Zigbee, Bluetooth and wifi module mounted gateway and the temperature, humidity sensor. After sending the temperature data from the IOTD to the middleware server, we analyzed the received data from the middleware server. As the result, we were able to interpretate the data sent from the IOTD, and identify that in using these data the cold chain data such as the temperature, humidity, and battery remains data can be collected in real time.