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A method and device for measuring insulation resistance supporting output voltage at any point

A technology for measuring insulation resistance and outputting voltage, which is used in measuring devices, measuring electrical variables, and measuring resistance/reactance/impedance. precise effect

Active Publication Date: 2015-08-05
UNI TREND TECH (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional measuring instruments have few selectable output measurement voltage points, which cannot meet the application of various electrical insulation measurement fields

Method used

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  • A method and device for measuring insulation resistance supporting output voltage at any point
  • A method and device for measuring insulation resistance supporting output voltage at any point

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Example: see figure 1 and figure 2 , the insulation resistance measurement method that supports the output voltage at any point provided in this embodiment, it includes the following steps:

[0026] (1) A main control chip is set in the measurement circuit, and functional software is embedded in the main control chip. The user selects any point to measure the voltage through the functional software, and the functional software sends a selection signal, and the main control chip passes through the functional software. The transmitted selection signal identifies the insulation resistance voltage that the user needs to measure;

[0027] (2) further set a reference generation module connected with the main control chip described in step (1), control the reference generation module by the main control chip, output high voltage reference signal;

[0028] (3) A high-voltage inverter generation module and a precise negative feedback circuit module connected to each other wit...

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Abstract

The invention discloses an insulation resistance measurement method supporting an output volage of any point, which is characterized by comprising the following steps of: (1) arranging a main control chip in a measurement circuit and embedding functional software in the main control chip; (2) arranging a reference generation module and outputting a high voltage reference signal; (3) arranging a high voltage inversion generation module and an accurate negative feedback circuit module and stably outputting a high voltage measurement signal; (4) arranging a high voltage attenuation circuit module and a loop current sampling module and outputting an insulation resistance measurement voltage signal and an insulation resistance measurement current signal; (5) arranging a low pass filter and carrying out filtering processing; (6) arranging an accurate analog-digital converter circuit module and carrying out digital conversion of the signals; and (7) arranging a display module and outputting and displaying a measurement result. The invention also discloses a measurement device for implementing the insulation resistance measurement method supporting the output volage of any point.

Description

technical field [0001] The invention relates to the field of electronic measurement, in particular to an insulation resistance measurement method supporting output voltage at any point, and a measurement device for implementing the method. Background technique [0002] Insulation resistance refers to the resistance value that occurs when a voltage is applied to the insulating part of the connector, and then a leakage current occurs in or on the surface of the insulating part. It is mainly affected by factors such as insulating materials, temperature, humidity, and fouling. The insulation resistance value provided on the connector sample is generally the target value under standard atmospheric conditions. In some circumstances, the insulation resistance value will drop to an unreasonable degree. In addition, pay attention to the test voltage value of the insulation resistance. According to the voltage applied to the insulator by the insulation resistance, different voltages...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/08
Inventor 洪少林吴忠良黄振锋严继东艾艳斌龙基智
Owner UNI TREND TECH (CHINA) CO LTD
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