高精度铂电阻传感器监测装置的研制
Development of a High-precision Platinum Resistance Sensor Monitoring Device
荣宏伟1
作者信息
- 1. 核工业理化工程研究院,天津 300180;粒子输运与富集技术全国重点实验室,天津 300180
- 折叠
摘要
针对工程现场Pt100铂电阻测温系统存在设计成本高、测量准确性差以及易受现场复杂电磁环境干扰等问题,研制了一种集Pt100铂电阻传感器信号采集、处理、传输于一体的数据监测装置,包括信号处理模块、模数转换模块、主控模块和通讯模块.通过分立元器件搭建信号处理电路,将Pt100铂电阻传感器输出信号转换为基准电压信号,输入到模数转换模块,主控模块通过并行接口读取模数转换模块发送的数据,并通过通讯模块完成数据传输.同时通过对被测信号建模与仿真分析,设计了一种高精度信号补偿算法,通过对被测信号全量程滤波、标定与修正,降低了环境工况对温度测量的影响.试验表明,装置具备铂电阻温度实时监测功能,且准确性高、设计成本低,可替代工程现场温度采集设备,实现规模化应用.
Abstract
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.
关键词
Pt100/补偿/监测/修正/准确性/成本Key words
Pt100/compensation/monitoring/correction/accuracy/cost引用本文复制引用
出版年
2024
NETL
NSTL
万方数据