本文介绍一种成本低,操作简单,小巧轻便,能自动完成温度的检测、数据处理及驱动等一系列工作的温度控制仪。它由 MCS-51单片机、A/D芯片、输入输出及显示设备等组成,适用于各种生产现场或环境的温度自动监测与控制,并具有报警功能。一、原理及功能图1是该仪器的原理框图。传感器把非电量的温度值转化成电量输出,由A/D转换器对模拟信号进行量化,被量化的信号经单片机处理后送显示器和加热器,若出现故障则报警。该仪器能完成以下功能: This article describes a low cost, simple operation, small and lightweight, can automatically complete the temperature detection, data processing and driving a series of work temperature controller. It consists of MCS-51 microcontroller, A / D chip, input and output and display devices and other components for a variety of production sites or the environment temperature automatic monitoring and control, and has the alarm function. First, the principle and function Figure 1 is the block diagram of the instrument. The sensor converts the non-electrical temperature value into a power output, and the analog signal is quantized by the A / D converter. The quantized signal is sent to the display and the heater through a single-chip microcomputer, and alarms if there is a fault. The instrument can accomplish the following functions: