基于微处理器的智能信号变送器的研究

本文详细介绍了一种基于微处理器的智能信号变送器的软硬件设计。硬件方面采用单
片机AT89C52 作为微处理器，可以对采集到的某种传感器转换后的数字信号作远距离传送，具体是通过RS-422 总线实现89C52 单片机与PC 机异步串行通信，同时也详细设计了其他
相关模块，如电源、温度采集、V/F、A/D 转换电路模块等。最后介绍了软件主程序设计。
关键字: 变送器；微处理器；传感器电路；电源
Research on The Intelligent Signal Transducer based on Microprocessor
Pan Kongjie1, Wu Dawei2 (1. Shanghai Xuhui Professional University Computer Department 200032; 2. Shanghai University, Mechatronics and Automation School Automation Department 200072) Abstract: The hardware and software design of new intelligent multifunctional general digital long-distance transmission equipment is introduced in this paper. It utilized the MCU-AT89C52 to collect the long-distance digital signal which is transformed by some sensor. In detail, it implements the serial asynchronous transmission mode between 89C52 and the PC by RS-422 bus. At the same time, it designs some other related module, such as the power, temperature acquisition, V/F, A/D transfer circuit. At last, it introduces the main program of the software in general.
Keywords: Transducer; Microprocessor; Sensor Circuit; Power Source