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Circuit and system for reading parameters of HART instrument through RS232

A circuit and instrument technology, applied in the field of automated instrument testing, can solve problems such as high prices, and achieve the effect of reducing maintenance costs and saving expenses

Inactive Publication Date: 2016-03-02
CHONGQING CHUANYI AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a circuit and system for reading HART instrument parameters through RS232, which is used to solve the need for expensive professional equipment in the existing HART protocol instrument parameter test. operating problems

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  • Circuit and system for reading parameters of HART instrument through RS232
  • Circuit and system for reading parameters of HART instrument through RS232
  • Circuit and system for reading parameters of HART instrument through RS232

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Embodiment Construction

[0016] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0017] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...

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Abstract

The invention provides a circuit and a system for reading the parameters of an HART instrument through RS232, which are applied to the field of automated instrument control. According to the invention, a principal computer command parsing module parses a command sent by a principal computer, and sends a signal obtained from parsing to an HART instrument through an HART signal transceiver module in order to read a corresponding HART signal parameter, and then, the HART signal parameter is sent back to the principal computer through the HART signal transceiver module and the principal computer command parsing module for display. Compared with the prior art, HART protocol instrument parameter test can be implemented with low cost, the cost of expensive specialized test equipment required in the prior art is saved, and the maintenance cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of automatic instrument testing, in particular to a circuit and a system for reading HART instrument parameters through RS232. Background technique [0002] For a long time, the parameter reading of smart instruments with HART protocol is generally completed through special products such as hand-held devices produced by major manufacturers. Generally speaking, such hand-held devices are expensive, and maintenance also requires professionals. The cost of upgrading is also high, and at the same time, because the program of the handheld device is solidified, it cannot be reprogrammed, so the flexibility is not high. Therefore, it is necessary to develop a low-cost and easy-to-use HART protocol instrument parameter reading scheme. Contents of the invention [0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a circuit and system for reading ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D18/00G05B19/042
Inventor 赵俊奎艾军
Owner CHONGQING CHUANYI AUTOMATION