基于51单片机的经济型高精度变送器设计

Design of Intelligent and Low Cost Transducer based on the 51 SoC

随着自动化技术的发展和微电子技术的进步,以及现场总线技术的日益成熟,数控技术在生产过程中的应用越来越广泛,对现场信号的采集、传输和数据处理提出更高的要求。本文分析了智能变送器的作用和工作原理,针对应用中使用的不同的传感器输出不同幅值的弱直流电信号的要求,设计了智能变送器系统。系统软件采用MCS—51单片机汇编语言,模块化程序设计方法,设计了仪表监控主程序、放大器增益设定程序、ADC转换和处理子程序、DAC转换等子模块,并设计了相应的通信协议。

With the development of Automation and the progress of the micro electronic technology, and the mature of Field Bus, digital control technology is widely used in production process, so collection, transition and treatment of signal should meet higher requirements. This thesis analyzes function and operation principle of intelligent transducer. The transducer is designed chiefly for different weak output signal of non-standard sensors. Software of the system designs main program, amplifier gain setting progr...