基于STM32的二线制智能仪表研究  

Research on Two-wire Intelligent Transmitter Based on STM32

作　　者：王健 WANG Jian(CGN Digital Technology Co.,Ltd.Beijing Branch,Beijing 100094,China)

机构地区：[1]中广核数字科技有限公司北京分公司,北京100094

出　　处：《自动化与仪表》2024年第7期119-122,共4页Automation & Instrumentation

摘　　要：该文介绍了二线制智能仪表的应用场合和特点。针对智能仪表的需求和设计难点,提出了一种基于STM32的二线制智能仪表设计,详细阐述了变送器电源电路、控制单元、PWM D/A单元、V/I电流环单元、HART单元实现电路的设计,有助于设计具有智能通信功能且性能稳定的仪表,研究成果在二线制温度变送器中得到应用,经实际测试验证了该设计的有效性。This paper introduced the application scenarios and characteristics of two wire intelligent instruments.A two wire intelligent instrument design based on STM32 is proposed to meet the requirements and design difficulties of intelligent instruments.The design of the transmitter power circuit,control unit,PWM D/A unit,V/I current loop unit,and HART unit implementation circuit is elaborated in detail,which helps to design instruments with intelligent communication function and stable performance.The research results have been applied in two wire temperature transmitters.The effectiveness of this design has been verified through practical testing.

关 键 词：二线制 电流环 HART 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]