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Device for connecting traditional industrial instrument to foundation fieldbus system

A field and industrial technology of the foundation, applied in the field of communication, can solve the problem of expensive bus instruments

Active Publication Date: 2019-12-13
ZHEJIANG SUPCON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the fieldbus instrument technology is still controlled by foreign instrument manufacturers. The bus instrument is expensive, and its application is much less than that of traditional instruments.

Method used

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  • Device for connecting traditional industrial instrument to foundation fieldbus system
  • Device for connecting traditional industrial instrument to foundation fieldbus system
  • Device for connecting traditional industrial instrument to foundation fieldbus system

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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0031] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for...

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Abstract

The application discloses a device for connecting a traditional industrial instrument to a Foundation fieldbus system. The foundation fieldbus is used to power and communicate with downstream equipment and comprises a controlled constant current source circuit, a control module and an interface circuit, wherein the controlled constant current source circuit is respectively connected to the foundation fieldbus and the control module, and is used to supply power to the control module; and the interface circuit is respectively connected to the foundation fieldbus and the traditional industrial instrument. The device provided by the invention has the advantages of 1) being powered by FF fieldbus (foundation fieldbus), following the fieldbus protocol, and communicating with the FF system; and 2) being possible to access traditional field instruments (0-20mA, 4-20mA) of industrial signals.

Description

technical field [0001] This application relates to the field of communication, in particular, to a device for connecting traditional industrial instruments to the Foundation fieldbus system. Background technique [0002] In traditional DCS applications, the transmitter instruments involved are mainly two-wire current type. This type of transmitter converts physical quantities such as temperature, pressure, and flow into 0-20mA or 4-20mA current signals. These current signals are sent to the analog input card (AI) in the DCS system for acquisition and quantification, so that the DCS system can obtain field data. Among them, the transmitter instrument is installed in the industrial site, and the DCS analog input card is installed in a special control room, there is usually a long distance between the two, and each transmitter must be controlled by The wires are connected to the control room, and the size of the cables is usually very large, making it difficult to lay and inco...

Claims

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Application Information

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IPC IPC(8): G05F3/26
CPCG05F3/262
Inventor 杨振国张晓刚洪忠亮段汝良
Owner ZHEJIANG SUPCON TECH
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