Design of Industrial Field Intelligent Temperature Acquisition System Based on Timestamped Anti-Interference Algorithm

摘要

At present, wired method is used widely in the acquisition and transmission of field signals in industrial field acquisition system. There are some problems such as long cables, difficult wiring, analog signals that are susceptible to interference and so on. A new design of industrial field intelligent temperature acquisition system based on timestamped anti-interference algorithm is presented in the paper. The system can collect analog signals of PT100 and convert that to digital signals which are transmitted to the control center by Data Transceiver. When the signals reach the control center, the system will process digital signals, and set up T-R relation table based on least square algorithm, and at last, the signals are restored to resistance signals of PT100 by using multichannel digital potentiometers. The system uses wireless transmission instead of wired transmission, to realize the collection, transmission and recovery of thermal resistance information, and solve the interference problem of long-distance wireless communication. Experimental test verify that the system communication is normal, stability and accurate, which provides a reasonable design scheme for the application of data transmission technology in industrial field.