Abstract:We design an automatic collection system of railway roadbed subsidence data. The system adopts static force level gage as the collection unit of railway roadbed subsidence data. Using LoRa wireless communication technology, and a low power STM8 series single chip and SX1278 RF transceiver, the Contiki operating system and its own Rime protocol stack are transplanted in the IAR environment to complete the multi-hop transmission of Mesh network. The collected railway subgrade settlement data is formed into a visual monitoring interface to realize the remote, low power consumption and reliable wireless transmission of the existing railway subgrade settlement data.