汽车的行驶安全越来越受到人们的关注,爆胎现象是引起交通事故的重要原因之一,而胎压计可以很好地预防汽车出现爆胎现象。数字式压力传感器电路设计就是简单的胎压计。本设计是基于单片机的数字式气压传感器,实现实时显示气压传感器探头处气压。系统分为数据采集、转换、显示、报警四个模块。利用压敏元件将待测起压信号变换为电信号,然后AD转换器将模拟量转为数字量给单片机,单片机处理输出到LCD显示。 More and more people are concerned about the safety of driving a car. The phenomenon of punctured tire is one of the important causes of traffic accidents, and the tire pressure gauge can prevent the phenomenon of punctured tire well. Digital pressure sensor circuit design is a simple tire pressure gauge. The design is based on digital pressure sensor SCM, real-time display barometric pressure sensor probe. System is divided into data acquisition, conversion, display, alarm four modules. The use of pressure-sensitive components to be measured from the pressure signal is converted to electrical signals, and then convert the analog to digital converter AD to the microcontroller, microcontroller output processed to the LCD display.