摘要
文章介绍基于AT89C2051精简结构单片机的压力传感与检测系统,以及配套PWM隔离式稳压电源的设计。压力传感器的前置放大器采用斩波稳零运算放大器,信号量化由集成V/F变换器结合单片机计数器的测频功能来实现,在模拟电路与单片机系统间各有光耦隔离器,充分体现了简洁、可靠、高精度和低成本的特点。
With the techniques of a chopper-stabilized OP AMP acting as the pre-AMP of the pressure sensor, a V/F chip and the timer of a single chip micro-controller based cymometer for the signal sampling, and a photoelectric isolator between the analog and t'he micro-controlling system, a pressure sensing and detecting system based on single chip simplify micro-controller AT89C2051 is introduced in this paper. The system is simple, reliable, high precision and low cost. How to design the isolated PWM power regulator is presented as well.
出处
《电子测量技术》
2003年第3期44-45,共2页
Electronic Measurement Technology
