Improvement Research on a PLC Controlled Cable Type Crack Displacement Monitoring Device
The cable type crack displacement monitoring device is a monitoring device that measures the relative displacement of slope landslide bodies,surface displacement,cracks,etc.,and plays a crucial role in monitoring engineering.In the current international market,the device has always been a related product developed using a microcontroller.Especially for communication technologies such as RS-485,RS-422,Modbus RTU,Modbus TCP,etc.,they are all serial communication protocols with short transmission distance,periodic data transmission,unstable transmission,easy packet loss,reduced communication efficiency,and a maximum speed of only 10Mbps,which cannot meet the requirements of high transmission speed data.Therefore,a better technical solution has emerged,which is a PLC controlled wire type crack displacement monitoring device.It uses the Siemens electrical automation controller PLC from Germany to read the output information of high-precision absolute value encoders,combined with the data processing center computer.It consists of five parts:the low-level encoder data acquisition unit,Profinet industrial communication network,PLC data acquisition center,computer data analysis center,and HMI interface.
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