摘要
设计了由STC89C52单片机、PT100温度传感器以及LCD12864(ST7920)液晶显示器组成的多功能数字测温仪。详细介绍了系统的硬件组成和软件流程,说明了PT100温度采集电路的工作原理及LCD12864显示温度、时间、日期的函数。实测温度表明,该系统的可靠性和测试精度均达到了设计要求。
A kind of the muhifuntional temperature measurement system based on MCU is presented in this paper, which consists of STC89C52 MCU, PT100 sensor and LCD12864 （ST7920） LCD. It introduces the hardware eomponents and software process in detail, and explains the operating principle of PTI00 temperature data acquisition circuit, and function of temperature display, time and data by LCD12864. Experimental result shows the reliability and testing precision of the system meet the design requirements.
出处
《微型机与应用》
2013年第1期26-29,共4页
Microcomputer & Its Applications
