Aiming at lack of corrosion monitoring of unmanned substation grounding grid

a design method of constant potential corrosion monitoring system based on Lo Ra technology is proposed. The system integrates corrosion sensing technology with the Internet of things（ Io T） technology. It uses three-electrode system to measure polarization potential and open circuit potential. Use low power consumption chip SX1278 as radio frequency（ RF）transceiver of Lo Ra communication to collect the information and send to relay node through RF signal

the relay node send data to background server through the Internet network

the data will be processed by the server

and sent to various terminal equipment through the Internet network. Experiments show that the system has stable performance and high data transmission reliability.