高压开关柜温升自动巡检仪的设计  

R&D of temperature rise scanning instrument for high-voltage switch device

作　　者：顾能华[1] 李培江[1] 吾文明 沈建位 

机构地区：[1]浙江工业大学浙西分校信息与电子工程系,浙江衢州324000 [2]浙江开关厂,浙江衢州324000

出　　处：《机电工程》2009年第9期60-62,76,共4页Journal of Mechanical & Electrical Engineering

基　　金：浙江省衢州市科技局资助项目(20081029)

摘　　要：针对高压开关设备出厂前温升试验手工完成效率低的问题,设计了一套自动温升巡测系统,该系统采用T型热电偶采集柜内母线排的温度信号,利用隔离热电偶变送器,将温度信号放大后送入TLC2543进行A/D转换,单片机(MCU)AT89S52对A/D转化结果进行处理后在液晶显示器(LCD)显示温升值,本系统还对测量误差曲线进行拟合后,在单片机软件中加以修正以提高测试精度。研究结果表明,该系统具有测量准确、抗干扰能力强等优点,能大幅度提高检测效率。Aiming at the inefficiency problem of temperature rise scanning of high-voltage switch device made by manual labor before they teft the factory, an auto system of temperature rise scanning was designed, which acquired temperature signals of conductors bus via T mode thermocouples and transmitted these signals into 12 bit serial-parallel A/D eonverter. MCU AT89S52 of this system processed these data into temperature rise values and displayed them in liquid crystal display（LCD）. In order to improve measurement accuracy, this system had fit the measurement error curve and corrected data into MCU. The results indicate that the system has characteristics of high measurement and powerful anti-jamming performance. It can greatly raise the working efficiency.

关 键 词：热电偶 A/D转换器 单片机 液晶显示器 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]