1、I 摘摘 要要 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。本设计是基于单片机的压力监测仪的设计，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。 本课题是针对单体支柱支撑压力检测仪的研究和设计所展开的。 它可对支柱 的压力进行检测，以确保单体液压支柱的正常工作。 检测仪可对单体支柱进行压力的检测和实时监控， 把测量到的数据传递给地 面的上位机， 以便作出相应的处理。 当压力过低或支柱漏夜时能够发出声光报警， 及时通知地面人员进行维修。 本课题主要涉及三方面的内容：压力检测、信号处理、数据显示与传输。压 力检
2、测采用电阻应变片式压力传感器对压力进行采集， 然后通过多级放大把信号 输入给 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 AD 转换器，然后 将模拟信号转换成单片机可以识别的数字信号，再经单片机转换成 LED 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
3、词：关键词：压力；AT89C51 单片机；压力传感器；A/D 转换器；LED 显示 II 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 m
4、icrocomputer 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,
5、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 al
6、arm, 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
