一种新型温度智能测量系统  

A New Intelligent System for Temperature Measurement

作　　者：李维波[1] 李启炎[1] 程正刚[1] 余宏伟[1] 李治中[2] 

机构地区：[1]华中理工大学电力系,湖北武汉430074 [2]四川工业学院机械工程与自动化系,四川成都610039

出　　处：《四川工业学院学报》2001年第1期14-15,50,共3页Journal of Sichuan University of Science and Technology

摘　　要：介绍了一种以 89C5 1单片机为核心组成的新型温度检测系统。该系统利用廉价高性能的V F(电压 频率 )变换器取代通常的A D转换器 ,选用K型热电偶作为检测元件 ,用集成温度传感器AD5 90测量冷端环境温度进行冷端补偿 ,从而大大提高了系统的精度和抗干扰能力。本文给出了该系统的硬件电路和软件实现 。A new kind of temperature measurement system,which is based on 89C51 singlechip computer,is introduced in this paper.In this system,the common A/D transformer is replaced by a cheap V/F transformer with high performance, Whle the K style thermoelectric couple is selected as measuring component,and the cold end is compensated by its environment temperature measured by integrated temperature sensor AD590 Hence the accuracy and the capacity of anti-disturbance are greatly improved.In this paper,the hardware circuit and realization of software are proposed,the character of the system and its application scope are analyzed.

关 键 词：V/F变换器 温度传感器 光电隔离 单片机 智能测温系统 冷端补偿 

分 类 号：TH811[机械工程—仪器科学与技术] TP216[机械工程—精密仪器及机械]