本文詳細介紹了一種基于微處理器的智能信號變送器的軟硬件設計。硬件方面采用單
片機AT89C52 作為微處理器，可以對采集到的某種傳感器轉換后的數字信號作遠距離傳送，具體是通過RS-422 總線實現89C52 單片機與PC 機異步串行通信，同時也詳細設計了其他
相關模塊，如電源、溫度采集、V/F、A/D 轉換電路模塊等。最后介紹了軟件主程序設計。
關鍵字: 變送器；微處理器；傳感器電路；電源
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