摘要

压力是工业生产过程中的重要参数之一。压力的检测或控制是保证生产和设备安全运行必不可少的条件。本设计主要通过单片机及专用芯片对传感器所测得的模拟信号进行处理,使其完成智能化功能V/F转换芯片，由其输出频率信号传输给主控芯片并经过主控芯片的处理，最后把信息显示出来并且传给上位机。

本次设计是基于AT89C51单片机的测量与显示。是通过压力传感器将压力转换成电信号，再经过运算放大器进行信号放大，送至8位A／DLED显示器可以识别的信息，最后显示输出。

本设计的最终结果是，将软件下载到硬件上调试出来了需要显示的数据，当输入的模拟信号发生变化的时候，通过A/D转换后，LED将显示不同的数值。

关键词：AT89C51单片机；压力传感器；A/D转换器；LED显示Abstract

Pressure in the process of industrial production is one of the important parameters. The pressure test or control is to guarantee the production and the safe running of the equipment necessary conditions. This design is based on the single chip microcomputer monitoring design pressure, mainly through the special chip microcontroller and of sensor measured simulation signal processing, make its complete intelligent function.

This topic is for single pillars of pressure detector research and design of open. It can detect the pillar pressure, to ensure the normal mono-hydraulic prop work.

Detector can of monomer pressure testing and support real-time monitoring, the measurement of the data transfer to the ground to the PC, so as to make corresponding processing. When the pressure is too low or pillar LouYe can give out sound and light alarm, inform the ground staff for repair.

This subject mainly involves three aspects of content: the pressure test, signal processing, data display and transmission. Pressure testing the resistance strain chip pressure sensor to pressure acquisition, and then through the multi-level amplifier to signal input to the V/F conversion chip, by its output frequency signal transmission to the main control chip and through the processing of the main control chip, finally the information displayed and to the upper machine.

This design is based on AT89C51 measurement and display. Is through the pressure sensor will pressure into electrical signal, and by the signal amplifier amplification, send to the eight A/D converter, and then convert an analog signal into A single chip can be identified, digital signal, to