基于HART协议的智能电动执行机构设计

The design of an intelligent electric actuator based on the HART protocol

HART协议是由模拟系统向数字系统转变过程中唯一向后兼容的智能仪表解决方案。该文设计基于HART协议的电动执行机构,给出控制系统的硬件电路,对通信单元的硬件设计和软件实现做了具体介绍。HART总线型智能电动执行器克服了传统电动执行器的缺点,为现场仪表向现场总线控制系统的全面过渡提供了基础。

The HART protocol is the only measure to solve compatibleness between the analog system and the digital system used in intelligent instruments. This paper presents the design of an electric actuator based on the HART protocol and gives an introduction about the hardware and software of a control system, especially those of the communication unit. The HART protocol fieldbus intelligent electric actuator overcomes the disadvantages of the conventional electric actuators and provides a transitive foundation for working-field instruments turning to a fieldbus control system.