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Machine vision-based automatic verification system for multipath hand-held digital multimeters

A digital multimeter and machine vision technology, applied in instruments, computer parts, character and pattern recognition, etc., can solve problems such as low efficiency of manual operation, improve work efficiency, improve low efficiency problems, and achieve the effect of data sharing

Inactive Publication Date: 2017-04-26
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

This invention has improved the low efficiency of manual operation to a great extent, and can test multiple handheld digital multimeters at the same time, and operate according to the written test program or software prompts to realize automatic test

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  • Machine vision-based automatic verification system for multipath hand-held digital multimeters
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  • Machine vision-based automatic verification system for multipath hand-held digital multimeters

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Embodiment Construction

[0017] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0018] combine figure 1 Illustrate the overall system architecture of the present invention, a multi-channel handheld digital multimeter automatic verification system based on machine vision, comprising: control and verification module 1, multifunctional calibrator 2, multimeter panel image acquisition unit 3, multimeter installation unit 4, switch Module 5 and demultiplexer 6.

[0019] The multi-function calibrator 2 can use a FLUKE5520A multi-product calibrator, etc., to output standard electrical signals.

[0020] The multimeter installation unit 4 is used to install the multimeter to be tested, realize the fixing of the multimeter, and assist the switching module 5 to switch the rotation of the multimeter turntable.

[0021] combine figure 2 Describe the connection of each module of the present invention. The multifunctional calibrator 2 , the universal...

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Abstract

The invention relates to a machine vision-based automatic verification system for multipath hand-held digital multimeters. According to the technical scheme of the invention, a hand-held digital multimeter is automatically controlled to select different function range gears; according to to-de-verified items, controlling a multifunctional calibration source to output standard signals (alternating-current voltage, direct-current voltage, alternating current, direct current, resistance value and the like) to a multipath to-de-verified digital multimeter, and conveying the measurement data of the panel of the to-de-verified digital multimeter to a computer based on the image collecting, processing and recognition function at the same time. In this way, verification data can be automatically recorded, and then a verification report and a verification certificate are generated. After the verification process, a database is established and then verification records and verification data are stored over the cloud through a cloud server. Meanwhile, a verification result is generated in the form of a two-dimensional code, so that the verification result can be conveniently recorded and searched. Meanwhile, the data sharing is facilitated. Compared with the manual verification mode of a conventional digital multimeter, the working efficiency is greatly improved. Moreover, errors caused by human factors are reduced and the comprehensive quality management is conveniently realized.

Description

technical field [0001] The invention relates to the verification field of a hand-held digital multimeter, in particular to an automatic verification system of a multi-channel hand-held digital multimeter based on machine vision. [0002] technical background [0003] Hand-held digital multimeters are widely used in the measurement of various electrical parameters due to their advantages of portability, high performance, multiple measurement functions, and high accuracy. They have been widely used in manufacturers, electrical laboratories, and measurement departments at all levels. Applications. Therefore, in order to fully ensure the accuracy and traceability of various measurement data, it is necessary to carry out regular verification of the handheld digital multimeter. But the manual verification of hand-held digital multimeters is no longer suitable for the requirements of modern measurement. So it is of great significance to develop a hand-held digital multimeter autom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04G06K9/20G06K9/32G06K9/36G06K9/40G06K9/62
CPCG01R35/04G06V10/22G06V10/25G06V10/247G06V10/20G06V10/30G06F18/22
Inventor 何亚强孙斌赵玉晓
Owner CHINA JILIANG UNIV
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