Intelligent bus switching controller

Abstract

The invention discloses an intelligent bus switching controller which comprises the components of a switching controller housing, a microcontrol unit and a power supply unit which are arranged in the switching controller housing, a first serial communication interface and a second serial communication interface, wherein the first serial communication interface and the second serial communication interface are in signal connection with the microcontrol unit. The microcontrol unit is used for receiving data of a bus communication card, comparing data which are transmitted by the bus communication card with stored data, judging bus type of the bus communication card, calling a corresponding communication protocol conversion program and converting data that are transmitted by the bus communication card to data which can be identified by an actuator. The microcontrol unit is further used for receiving data of the actuator, calling the corresponding communication protocol conversion program according to the judged bus type of the bus communication card, and converting the data which are transmitted by the actuator to data which can be identified by the bus communication card. The intelligent bus switching controller has advantages of reducing load and memory of an actuating mechanism master control CPU and furthermore realizing seamless switching or compatibility between various field buses.

Description

technical field [0001] The invention relates to the technical field of bus communication, in particular to an intelligent bus conversion controller for realizing data interaction between a bus communication card and a controller of an actuator. Background technique [0002] At present, there are two ways of intelligent actuator control in the market: [0003] The first is to adopt the traditional control method, which has switch signal and 4-20mA analog signal control. Commonly used field bus control methods are PROFIBUS, FF, MODBUS, HART and so on. [0004] The second is the use of fieldbus control. The intelligent actuator with field bus has functions required by various control technologies such as two-way communication, parameter online calibration, and fault self-diagnosis. At the same time, less auxiliary equipment needs to be used, no isolation, conversion and input and output modules such as DI, DO, AI, AO, etc., and a large number of signal cables, cable accessor...

AI Technical Summary

Problems solved by technology

Sometimes it is even necessary to replace the entire actuator, resulting in difficult construction, long renovation period, and increased renovation costs

Obviously, the existing intelligent actuators have certain limitations and cannot fully meet the needs of customers and adapt to the needs of the market.

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