Collateral temperature measurement method for realizing Modbus transmission

A temperature measurement method and measurement channel technology, applied in the field of temperature measurement method, to achieve the effect of reducing cost, reducing wiring complexity, and reducing complexity

Inactive Publication Date: 2015-04-08
SHANGHAI AUTOMATION INSTRAION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In order to achieve the best performance of the process automation system, it is necessary to strictly control the temperature points in the process by setting multiple temperature measurement points. The traditional monitoring method uses one instrument to monitor one parameter. Therefore, the entire process automation system It is necessary to install a large number of temperature instruments, and also need to arrange a large number of transmission lines

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  • Collateral temperature measurement method for realizing Modbus transmission
  • Collateral temperature measurement method for realizing Modbus transmission

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0016] figure 1 It is the principle diagram of the parallel temperature measurement method that the present invention realizes Modbus transmission, figure 2 It is the flow chart of the parallel temperature measurement method that the present invention realizes Modbus transmission, please refer to figure 1 , figure 2 , a parallel temperature measurement method that realizes Modbus transmission, wherein, the Modbus master station receives the Modbus request interrupt message of the DCS distributed processing unit, and the Modbus master station transmits the message to the microprocessor through the Modbus communication unit, and the microprocessor accordingly Select the measurement channel and perform AD acquisition and processing. The microprocessor transmits the processed message to the Modbus communication unit for transmission according to the Modbus re...

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Abstract

The invention discloses a collateral temperature measurement method for realizing Modbus transmission and relates to the field of thermometry. A Modbus main station receives a Modbus request interrupt message of a DCS (Data Communication System) distributed processing unit, the Modbus main station transmits the message to a microprocessor by virtue of a Modbus communication unit, and the microprocessor is capable of measuring channel selection and collecting and disposing AD according to the message; the processed message is transmitted to the Modbus communication unit according to the Modbus response frame demand by virtue of the microprocessor so as to be sent, and the microprocessor is exited and interrupted. Based on the Modbus transmission, the temperature is measured collaterally, one industrial instrument which uses the method can meanwhile measure the temperatures of multiple measuring control points, so that the cost of the instrument is further lowered, the wiring complexity is lowered, the operation is simplified, and the efficiency is improved.

Description

technical field [0001] The invention relates to a temperature measurement method, in particular to a parallel temperature measurement method for realizing Modbus transmission. Background technique [0002] In order to achieve the best performance of the process automation system, it is necessary to strictly control the temperature points in the process by setting multiple temperature measurement points. The traditional monitoring method uses one instrument to monitor one parameter. Therefore, the entire process automation system A large number of temperature instruments need to be installed, and a large number of transmission lines also need to be arranged. If there is a parallel temperature measurement method based on Modbus transmission, when it is applied to temperature measurement instruments, one temperature measurement instrument can be used to replace multiple traditional temperature measurement instruments, then the instrument cost and wiring complexity can be greatl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C19/00H04L12/40
Inventor 崔晨刘金亭赵勇鞠政
Owner SHANGHAI AUTOMATION INSTRAION CO LTD
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