MAX6675在K型热电偶温度测量中的应用

The Application of MAX6675 in Temperature Measurement of Using K Type Thermocouple

针对工业测温控温存在的需求,介绍一种基于热电偶测温控制系统,系统包括温度数据采集及控制器两部分。温度数据采集由K型热电偶、K型热电偶串行模数转换器MAX6675组成,控制器由单片机进行数据处理,固态继电器进行通断控制。本文阐述了MAX6675与单片机组成的测温控温系统的硬件组成和软件的设计思路。实践表明:该系统结构简单,软件实现容易、操作方便,运行可靠、成本较低,特别适合小型企业简单测温控制,具有很好的应用推广价值。

This paper describes a temperature measurement and control system based on the thermocouple to meet the demand of industrial thermometry and control. The system includes two parts:temperature data acquisition and controller. Temperature data acquisition is composed of K-type thermocouple and K-type thermocouple serial analog-to-digital converter MAX6675. The controller is composed of a single chip computer for data processing and a solid-state relay for continuous control. This paper describes the hardware composition and software design idea of temperature measurement and control system composed of MAX6675 and single chip computer.Practice shows that the system is simple in structure,easy to implement,easy to operate,reliable in operation and low in cost. It is especially suitable for simple temperature measurement control in small enterprises and has good application and popularization value.