Development of a High-precision Platinum Resistance Sensor Monitoring Device
A data monitoring device that integrates signal acquisition,processing,and transmission of Pt100 platinum resistance sensor has been developed to address the issues of high design cost,poor measurement accuracy,and sus-ceptibility to complex electromagnetic environment interference in the engineering site Pt100 platinum resistance tem-perature measurement system.It includes a signal processing module,analog-to-digital conversion module,main control module,and communication module.By building a signal processing circuit with discrete components,the output signal of the Pt100 platinum resistance sensor is converted into a reference voltage signal,which is input to the analog-to-digital conversion module.The main control module reads the data sent by the analog-to-digital conversion module through a parallel interface,and completes the data transmission through the communication module.At the same time,a high-precision signal compensation algorithm was designed through modeling and simulation analysis of the measured signal.By filtering,calibrating,and correcting the full range of the measured signal,the impact of environ-mental conditions on temperature measurement was reduced.The experiment shows that the device has the function of real-time monitoring platinum resistance temperature,and has high accuracy and low design cost.It can replace temperature collection equipment in engineering sites and achieve large-scale application.
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