基于RE200B红外传感器的体温仪设计

为了能在人口集中的公共场所快速、准确测量大批量人群体温,系统采用RE200B红外传感器作为温度采集器件,以STC89C52为核心,DS18B20传感器采集环境温度作为补偿温度,设计了一种电子红外测温仪.系统主要包括硬件和软件两大部分,红外信号经过光学系统聚焦在RE200B热释电探测器上并转变为相应的电信号,此信号经过放大、A/D转换,再送到单片机中进行数据的处理、补偿,最后送到液晶显示结果.软件采用C语言来编写.经实验测试：设计红外体温仪平均相对误差小于0.3％,符合系统设计的预期要求.

Design of Temperature Instrument RE200B Based on Infrared Sensor

In order to measure individual body temperature in popular concentrate public places quickly and accurately, a system uses RE200B infrared sensor as the temperature acquisition device, with STC89C52 as the core, the environment tempera- ture acquisition DS 18B20 sensor as temperature compensation, an electronic red tracking instrument is designed. The system mainly includes two parts： hardware and software. The infrared signal through the optical system focus on the RE200B pyroelectric detector then converts to a corresponding electrical signal. The signal after amplification, A/D conversion, then sent to the processing, compensation data of the MCU, and finally to the liquid crystal display results. The software uses C language to write. The experiments show that the average relative error of designed infi＇ared thermometer is less than 0.3%, consistent with the expected system design.