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Interface device and method used for connecting distributed control system and intelligent device

A distributed control and control module technology, applied in the direction of total factory control, total factory control, electrical program control, etc., can solve problems such as reliability and speed performance, improve reliability, facilitate two-way digital communication, and improve reliability degree of effect

Active Publication Date: 2013-07-03
BEIJING GUODIAN ZHISHEN CONTROL TONGDY
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  • Claims
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Problems solved by technology

[0005] At present, there is no multi-channel interface device that uses the HART field bus protocol to realize the interconnection between the distributed control system and intelligent equipment, and the existing interface devices generally have reliability and speed performance problems

Method used

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  • Interface device and method used for connecting distributed control system and intelligent device
  • Interface device and method used for connecting distributed control system and intelligent device
  • Interface device and method used for connecting distributed control system and intelligent device

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Embodiment Construction

[0045] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. It should be understood that the following examples are only used to illustrate and explain the present invention, but not to limit the technical solution of the present invention.

[0046] The embodiment of the interface device for realizing the interconnection between the distributed control system and the intelligent equipment of the present invention, its principle is as follows figure 1 As shown, it includes a control module, an isolation module, and multiple output channels. In addition to the AO signal processing module including the analog output (AO) channel, each output channel also includes a shaping module for the HART channel, where:

[0047] The control module is used to process the HART data of each output channel received from the DCS processing unit (DPU) into a corresponding HART signal, which is ou...

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Abstract

The invention provides an interface device and method used for connecting a distributed control system and an intelligent device. According to the interface device and method, a control module is used for processing received highway addressable remote transducer (HART) data of each output channel to corresponding HART signals and outputting the HART signals and processing received corresponding current data to corresponding digital signals and outputting the digital signals, an isolation module is used for transmitting the HART signals output by the control module to a reshaping module and transmitting the digital signals output by the control module to an analog output (AO) signal processing module, the reshaping module is used for carrying out shaping filtering on the input HART signals and outputting the HART signals through corresponding capacitor filters, the AO signal processing module is used for converting the input digital signals to analog voltage signals which are then superposed with the HART signals output in a filtering mode, and the superposed signals are then converted to corresponding currents to be output on corresponding AO channels through pressure / flow transformation. According to the interface device and method used for connecting the distributed control system and the intelligent device, the signal transmission method is simplified and reliability is improved.

Description

technical field [0001] The invention relates to a data exchange technology of a distributed control system (DCS, Distributed Control System), in particular to an interface device and a method for realizing the interconnection between a distributed control system and an intelligent device. Background technique [0002] The distributed control system is a multi-level computer system composed of a process control level and a process monitoring level with a communication network as a link. It integrates computer (Computer), communication (Communication), display (CRT) and control (Control) technologies. (that is, 4C technology), the basic idea is to realize the decentralized control of the system, centralized operation, hierarchical management, flexible configuration and convenient configuration. DCS has the functions of data acquisition, direct digital control, human-computer interaction, monitoring and management. [0003] Since the advent of the distributed control system, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 夏明潘钢田雨聪丁娟张立然吕大军吕品彭琪李杰李文
Owner BEIJING GUODIAN ZHISHEN CONTROL TONGDY
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