Protocol conversion device based on HART technology

A protocol conversion and technology technology, applied in the direction of electrical components, transmission systems, etc., can solve the problems of limited expansion space, high procurement costs, and inconvenient deployment on industrial sites, and achieve the effect of increasing the transmission rate

Pending Publication Date: 2021-12-24
HIWING AVIATION GENERAL EQUIP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In the prior art, HART and RS485 need to be connected to the gateway board of the computer and realize the communication function through computer programming, which is not convenient for industrial field deployment, limited expansion space, and high procurement cost, which is not conducive to large-scale use

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  • Protocol conversion device based on HART technology
  • Protocol conversion device based on HART technology
  • Protocol conversion device based on HART technology

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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit t...

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Abstract

The invention provides a protocol conversion device based on an HART technology. The protocol conversion device comprises measurement and control equipment and a plurality of RS485 and HART conversion circuits connected with the measurement and control equipment; each RS485 and HART conversion circuit comprises a power management module, an RS485 signal conversion module, a data analysis module, an HART communication module and an HART instrument, wherein the RS485 signal conversion module, the data analysis module, the HART communication module and the HART instrument are connected in sequence, and the power management module provides power for each RS485 and HART conversion circuit. According to the invention, two-way data communication between instruments with two different interfaces of HART and RS485 and communication protocols is realized, so instruments with different brands and different protocols in an industrial field form a sensor measurement and control network.

Description

technical field [0001] The invention belongs to the technical field of automatic instrument measurement and control, and in particular relates to a protocol conversion device for a HART interface and an RS485 interface. Background technique [0002] HART (Highway Addressable Remote Transducer) is a high-speed addressable remote sensor data path, used for data transmission protocols between intelligent instruments and control systems. It adopts FSK (Frequency Shift Keying) digital signal superimposed on the analog signal, which not only maintains the industrial standard of 4 ~ 20mA analog signal, but also realizes the function of transmitting process and transmitter data in digital form. Its disadvantage is that the transmission speed is slow and the number of bus network nodes is small. [0003] RS485 communication adopts half-duplex working mode and supports multi-point data communication. It adopts balanced transmission and differential reception, has fast transmission s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L69/08
Inventor 赫瑞华张妍毛飞孟范源
Owner HIWING AVIATION GENERAL EQUIP
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