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Indicating instrument full-automatic test method based on computer visual sense technology

A technology of computer vision and indicating instruments, applied in the direction of instruments, measuring devices, measuring electrical variables, etc., can solve the problems of recognition errors, false detections, and restrictions on the application of automatic verification, so as to improve accuracy and avoid recognition errors.

Inactive Publication Date: 2008-08-13
曾浩文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Existing, automatic verification uses computer instead of manual operation, which greatly improves the efficiency, but there are many types of instruments, and computer programs cannot reach the level of artificial intelligence. For some instruments with special shapes or dial structures, it is necessary to judge which ones are needed Calibration scale lines, what are the values ​​corresponding to these scale lines, there will be deviations, resulting in false detection
Misdetection is unacceptable for the verification work, and the user cannot judge in advance which watches can be automatically verified and which watches will recognize errors. This problem greatly restricts the application of automatic verification

Method used

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  • Indicating instrument full-automatic test method based on computer visual sense technology
  • Indicating instrument full-automatic test method based on computer visual sense technology
  • Indicating instrument full-automatic test method based on computer visual sense technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Take the full-automatic verification of voltmeter as an example below to illustrate the method set forth in the present invention, as image 3 Shown:

[0056] The first step is to input the information of the meter to be inspected. Generally, the information to be input includes: meter type (voltmeter), measuring range (300V), and uniform inspection points (3);

[0057] The second step is to input image feature information, including: indicator movement mode (circle), indicator circle center position (bottom right), scale angle range (0-90);

[0058] In the third step, the content of the viewfinder is displayed on the computer, and the range of the instrument is delineated with the mouse. Generally, the range of the dial can be taken, and the subsequent image recognition software only needs to process and recognize the images within the range.

[0059] In the fourth step, the computer displays the recognized image to the user for checking and modification by the user; ...

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Abstract

The invention discloses a method of indicating instrument automatic test based on the computer vision technology, which comprises the following steps: inputting the information of the seized table to the computer; camera equipment which is controlled by the computer collects the seized table image, after recognizing by mage recognition software, causes the dial on image to check verification of information; the computer according to the corresponding test order, controls the standard source and camera equipment, completes the testing instrument. The invention adds a matching process in the existing automatic test methods, before the formal detecting of the computer, the dial recognized by the computer is showed in front of customers on image, and the sub-degree line and the value needed to test are marked, for users checking or modifying. Wrong judgments caused by the identification error of computer are avoided in the course of dial testing; the accuracy of test instrumentation is increased.

Description

technical field [0001] The invention relates to the technical field of instruments and meters, in particular to an automatic verification method for indicating instruments based on computer vision technology. Background technique [0002] Currently, there are generally two types of meter verification methods: [0003] (1) The general process of instrument manual verification [0004] like figure 1 As shown, the purpose of calibrating the instrument is to judge whether the inspected meter meets the quality requirements. All kinds of instruments have verification regulations issued by relevant national agencies, such as JJG124-2005, JJG440-86, JJG603-2006. The general process of manual verification: [0005] ●Adjust the zero position of the tested meter; [0006] ●Connect the standard source and the meter under test; [0007] ●Record the information of the inspected meter; [0008] ●Adjust the output of the standard source so that the indicator of the meter under test i...

Claims

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Application Information

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IPC IPC(8): G01D18/00G01R35/00
Inventor 曾浩文
Owner 曾浩文
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