Design of bolt force monitoring system based on synchronous monitoring

In view of problems of complex structure, single measuring point and inconvenient installation of existing bolt force monitoring method, a bolt force monitoring system based on synchronous monitoring was designed. The system selects the diffusion silicon pressure sensor to collect the axial force of the bolt in a certain section of the roadway, and the force data of 8 bolts can be obtained simultaneously; the collected data are stored and transmitted after partial voltage filtering and AD conversion. The experimental results show that the system realizes synchronous monitoring of multiple bolts and anchor cables in a certain section of the roadway with high sampling rate, and its measurement accuracy can meet requirements of synchronous section bolts monitoring.