Online measurement device and measurement method thereof for pipeline flux instrument

A flow meter and verification device technology, applied in the field of online verification devices for pipeline flow meters, can solve the problems that image data cannot be transmitted and analyzed remotely, affects the analysis and judgment of the tested meter, and cannot track and monitor in real time, and achieves compact structure, Avoid misjudgment or time error, easy to operate

Inactive Publication Date: 2009-10-21
CHANGZHOU INST OF MEASUREMENT & TESTING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this detection device uses DSP technology to recognize the images acquired by the camera to improve the speed and accuracy of recognition, it does not provide a specific solution that can be put into practice, and requires the detection personnel to go to the scene to operate the instrument. The data cannot be transmitted and analyzed remotely, which affects the analysis and judgment of the tested instrument, resulting in low verification efficiency, and cannot track and monitor in real time, and cannot find the instrument that needs to be repaired or replaced in time

Method used

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  • Online measurement device and measurement method thereof for pipeline flux instrument
  • Online measurement device and measurement method thereof for pipeline flux instrument

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (Embodiment 1, instrument online verification device)

[0024] See figure 1 , the online verification device for pipeline flow meters in this embodiment includes: a detection terminal 2 and a background management unit 3, and the detection terminal 2 and the background management unit 3 are wirelessly connected through a GPRS wireless network.

[0025] The detection terminal 2 includes a flow meter 21 , a camera 22 , a DSP module 23 , an Internet communication unit 24 and a GPRS communication unit 25 connected to the DSP module 23 . The DSP module 23 includes an image processing unit and a control unit. The camera 22 of the detection terminal 2 is set facing the dial of the meter 1 under test. The flow meter 21 is fixed on the pipeline 4 . The output end of the camera 22 is electrically connected to the input end of the image processing unit. The output end of the flowmeter 21 is electrically connected with the input end of the control unit through the RS-232 serial...

Embodiment 2

[0028] (Embodiment 2, instrument online verification method)

[0029] See figure 2 , The meter online verification method of this embodiment adopts the meter online verification device described in Embodiment 1.

[0030] The ultrasonic flowmeter is used as the standard flowmeter 21, which is directly installed on the outer wall of the pipeline 4, close to the instrument 1 under test. After obtaining the flow value flowing through the ultrasonic flowmeter and the flow value in the instrument under test on the pipeline 4, an error analysis is performed on the above two values ​​to determine whether the accuracy of the instrument under test meets the requirements. Since the fluid in the pipeline 4 requires continuous flow without affecting normal operation, the readings of the tested instrument 1 and the flowmeter 21 are changing all the time, and the accuracy of online detection depends on capturing the readings of the flowmeter and the tested instrument at the same time.

[...

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Abstract

The invention discloses an online measurement device and a measurement method thereof for a pipeline flux instrument, comprising a detection terminal and a background management unit; the detection terminal comprises a flowmeter, a camera, a DSP module and a communication unit connected with the DSP module; the background management unit comprises a central control unit and a communication module connected with the central control unit; the detection terminal and the background unit carry out data communication by a GPRS wireless network and / or an Internet; the output terminals of the camera and the flowmeter are respectively connected with the image signal input terminal and the flux value signal input terminal of the DSP module; the camera of the detection terminal right faces to the dial plate of the instrument to be measured; the flowmeter is arranged on the pipeline; and the background management unit respectively obtains the accumulated flux in the pipeline within unit time by the camera and the flowmeter in the detection terminal so as to calculate the measurement error of the instrument to be measured.

Description

technical field [0001] The invention relates to the field of standard detection of flow meters, in particular to an on-line verification device for pipeline flow meters and an on-line verification method using the device. Background technique [0002] Various flow meters are widely used in various industries. With the extension of the service life of the meters, the measurement accuracy of the meters will change, which will affect the trade settlement. Therefore, according to the relevant regulations, the manufacturers and measurement departments of the meters need The indication error of the instrument shall be regularly checked for instrument accuracy in accordance with the regulations formulated by the relevant departments. However, because the installation and disassembly of the instrument is inconvenient, and the disassembly of the instrument will also cause inconvenience to the normal production of the user unit, so an online non-invasive instrument verification system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
Inventor 丁维光杨新建李伟张永力陈煜钱兰珍
Owner CHANGZHOU INST OF MEASUREMENT & TESTING TECH
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