Batch calibration equipment and batch calibration method for intelligent pointer-type pressure gages

The technology of a calibration device and calibration method, which is applied in the field of instrument calibration, can solve the problems of easy fatigue, low reliability, and low calibration efficiency when reading the dial
CN102840948AInactive Publication Date: 2012-12-26TECHN MONITORING CENT OF CHANGQING PETROLEUM EXPLORATION BUREAU +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TECHN MONITORING CENT OF CHANGQING PETROLEUM EXPLORATION BUREAU
Publication Date
2012-12-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses batch calibration equipment and a batch calibration method for intelligent pointer-type pressure gages. The batch calibration equipment comprises a horizontal calibration platform, a horizontal testing pipe, a plurality of quick connectors for being installed on a plurality of calibration pressure meters respectively, two image acquisition devices which are located in front of the horizontal calibration platform, an image processing device, a pressurization device and a pressure regulation device which regulates pressure in the horizontal testing pipe. The batch calibration method comprises the following steps of: firstly, doing a preparation work before calibration; secondly, inputting and matching models of the pressure gages to be calibrated; thirdly, obtaining data of dial plate templates; fourth, acquiring and dividing images of dial plates, and detecting straight lines at which pointers are located; fifth, matching the templates; sixth, obtaining numberical reading of the pressure meters, and the numberical reading obtaining process comprises the following steps of: obtaining dial plate image information to be processed, matching binocular stereo-vision images and processing the data. The batch calibration equipment disclosed by the invention is reasonable in design, simple and convenient in use and operation, has a good use effect, and calibration efficiency and calibration accuracy of the pointer-type pressure gages are greatly improved.
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Description

technical field

[0001] The invention belongs to the technical field of instrument calibration, and in particular relates to a batch calibration device and a batch calibration method for intelligent pointer pressure gauges. Background technique

[0002] In the process of oil field production and operation, because the elastic sensitive element of the pointer pressure gauge has high mechanical strength, and has the advantages of simple structure, low cost, reliable performance, and convenient maintenance and repair, it has been more and more widely used. With the development of digital electronic technology, some pointer pressure gauges have been replaced by digital instruments, which are highly accurate and easy to read, but when the measured value changes rapidly or fluctuates back and forth, the indication value of the digital instrument will change rapidly accordingly It is not easy to be read; and if the control displays the time interval, the details of the changes in be...

Claims

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