Environmental monitoring system for low-temperature food transport
DAI Guang-lin1，LIANG Xue-li1，XIAO Zhi-you1，ZHAO Xiao-min1，2
（1. College of Computer Science & Technology，Zhejiang University of Technology，Hangzhou 310023，China；
2. Zhejiang Key Laboratory on Intelligent Processing of Visual Media，Hangzhou 310023，China）
Abstract：Aiming at high temperatures caused food spoilage during low-temperature food transport，but it is difficult to design the realtimesystem to monitor the temperature. A low-temperature food transport environmental monitoring system was proposed based on RFID，WSN，GPS and GPRS technology，which was included intelligent nodes，data collection terminal，RFID tags，monitoring and managementplatform，and mobile app client. It was focused on the design of intelligent nodes，data collection terminal hardware structure and software
workflow. The functionality of monitoring and management platform，and the mobile client app were finished. An experimental apparatussystem was developed to achieve real-time monitoring of temperature，humidity and vehicle location information for low-temperature foodrefrigerated trucks during transport. The alarm messages were immediately sent to the mobile phone when the system detected abnormaltemperature and humidity. The test results show that the system could get the humidity and geographic location information of the lowtemperaturefood during their transport，and the alarm SMS is sent when the temperature reached the threshold. This design can meet therequirements of low-temperature food transport environmental monitoring.
Key words：cold chain transport；real-time monitoring；temperature and humidity；location information