Multi-core cable tester

A multi-core cable and tester technology, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve the problems of large manual labor, large measurement errors, complicated wiring changes, etc., to achieve a high degree of intelligence and automation, and test speed. Fast, flexible effects

Inactive Publication Date: 2010-06-23
王欣鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of the traditional shaking meter method for measuring insulation resistance are: the measurement error is large, and the accuracy of the high-voltage power supply used for the withstand voltage test cannot be guaranteed; the measurement results cannot be automatically saved and printed out; , changing the wiring is cumbersome, easy to make mistakes, and the amount of manual labor is large

Method used

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Embodiment Construction

[0011] See figure 1 , the present invention mainly is made up of following three parts: input circuit 1: comprise keyboard circuit, insulation test circuit, A / D conversion circuit and on-off test circuit; Output circuit 3: by CPLD system circuit, LCD liquid crystal display module, printer, relay group and 500V DC high-voltage circuit; control circuit 2: composed of 8051 single-chip microcomputer system circuit; the output terminal of the input circuit 1 is connected to the input terminal of the control circuit 2, and the input terminal of the control circuit 2 is connected to the input terminal of the output circuit 3 .

[0012] See figure 2 , the insulation resistance test circuit is composed of three parts: sampling circuit 4, operational amplifier 5 and AD7705 (6); the output terminal of the adopting circuit is connected with the input terminal of operational amplifier, and the output terminal of operational amplifier is connected with the input terminal of AD7705, 500V D...

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Abstract

The invention relates to a tester, in particular to a multi-core cable tester. The invention aims to provide a multi-core cable tester which ensures the accuracy of the testing result and outputs the testing result from a liquid crystal screen and a printer. The multi-core cable tester mainly comprises three parts: an input circuit, an output circuit and a control circuit, wherein the input circuit comprises a keyboard circuit, an insulation test circuit, an A/D conversion circuit and an on-off test circuit; the output circuit consists of a CPLD system circuit, an LCD liquid crystal display module, a printer, a relay group and a 500V DC high-voltage circuit; the control circuit consists of a 8051 single-chip microcomputer system circuit; and the output end of the input circuit is connected with the input end of the control circuit, and the input end of the control circuit is connected with the input end of the output circuit.

Description

Technical field: [0001] The invention relates to a detection instrument, in particular to a multi-core cable tester. Background technique: [0002] A wide variety of communication cables and control cables are widely used in various instruments and control equipment. Whether the cables are in good conduction and whether the insulation resistance between the wires meets the requirements directly affects the normal operation of electrical equipment. The withstand voltage insulation resistance is an important index to measure the performance of electrical insulation materials. The main disadvantages of the traditional shaking meter method for measuring insulation resistance are: the measurement error is large, and the accuracy of the high-voltage power supply used for the withstand voltage test cannot be guaranteed; the measurement results cannot be automatically saved and printed out; , Changing the wiring is cumbersome, easy to make mistakes, and the amount of manual labor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02G01R27/02
Inventor 王欣鹏
Owner 王欣鹏
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