目的:针对市场现有的测温仪的弊端,设计一种新型医用红外测温仪。方法:采用红外线温度传感器采集人体温度,以HT67F5640芯片为主控制器,通过A/D转换把检测的人体温度显示在液晶显示器(liquid crystal display,LCD)上。该仪器设计的电路包括主控制电路、电源电路、红外温度传感器电路、LCD驱动电路、按键电路、报警电路等;软件部分包括主程序,AD采集、LCD显示、蜂鸣器报警以及按键扫描等子程序。结果:该医用红外测温仪测量体温速度快、精度高、重复性好,医务人员反应良好。结论:该测温仪功耗低、使用方便、稳定性高、便于携带、各项参数优越,可以实现患者体温的快速检测。Objective To design a new type of medical infrared temperature measuring instrument.Methods The data on human body temperature were collected by the infrared temperature sensor with HT67F5640 as the main controller,and then displayed on the LCD through the A/D conversion.The circuits of the instrument included power supply circuit,infrared temperature sensor circuit,LCD drive circuit,key circuit,alarm circuit,etc.The software involved in the main program,AD acquisition subroutine,environment temperature compensation subroutine,calibration mode subroutine,etc.Results The instrument gained advantages in speed,precision,repeatability and response from medical staffs.Conclusion The medical infrared thermometer behaves well in low power consumption,easy operation,high stability and portability and etc,and is very suitable for the rapid detection of the patient's temperature
