Research on Safety monitoring network of the city subway engineering

For the monitoring of subway construction and operation safety, early warning and emergency measures, this paper studies the Internet of things(IoT) on safety monitoring of city subway project. This study also include the active smart sensors of city subway IoT and the wireless network composited by tags. This paper researches on the design of tunnel and bridge monitoring sensor on cluster detection. The information nodes of composition sensor format smart labels by connecting RFID through a IoT intermediate. The information reaches the final goal through the multiple hop transmission of smart labels. The monitoring information is transferred by wireless sensor following IoT protocol. So, in this way, achieving the goal of subway tunnel and bridge safety monitoring, early warning and emergency treatment.