CN208092178U - A kind of insulation resistance measuring device - Google Patents
A kind of insulation resistance measuring device Download PDFInfo
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- CN208092178U CN208092178U CN201820469774.2U CN201820469774U CN208092178U CN 208092178 U CN208092178 U CN 208092178U CN 201820469774 U CN201820469774 U CN 201820469774U CN 208092178 U CN208092178 U CN 208092178U
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- resistance
- insulation
- microcontroller
- power supply
- testing
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- 238000009413 insulation Methods 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 36
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 10
- 230000007547 defect Effects 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a kind of insulation resistance measuring devices, including measuring circuit, wireless transport module and host computer, in measuring circuit, divider resistance connect with voltage sample resistance after with testing resistance where branch circuit parallel connection, divider resistance R and voltage sample resistance RV is used to measure the voltage value of testing resistance, current sampling resistor is used to measure the current value of testing resistance, signal processing unit is used to handle measured voltage value and current value, and it is transmitted to microcontroller, obtain the insulation performance parameter of tested resistance, microcontroller connects power supply, power source reference value is provided for measuring circuit, microcontroller is for the insulation performance parameter of tested resistance to be compared with the insulation parameter database that prestores.The utility model is used to measure the insulation performance parameter of resistance, high certainty of measurement and stability is good, the insulation performance dynamic state of parameters change curve of test item can be shown on this basis, and shows defect that may be present in test item Condition assessment of insulation result and test item.
Description
Technical field
The utility model belongs to insulation measurement Applied research fields more particularly to a kind of insulation resistance measuring device.
Background technology
Insulation resistance meter is that (insulation performance parameter includes for measuring dielectric insulation performance parameter：Insulation resistance, absorption
Than and polarization index) meter specially.It measures, tests currently, mostly using digital insulation resistance meter in high-potting greatly
Personnel compare the result of measurement to the reference value of related regulation, and value is not lower than numerical value as defined in regulation；It also can be with
Delivery test, check test and pervious routine test numerical value are compared；It can also be with the experiment number of homotype test item
Value is compared.Final testing crew is provided according to correlation test regulation and personal experience, whether judges test item insulation situation
Well.
This traditional measurement method includes a large amount of artificial analytic process, thus its validity largely by
The influence of testing crew subjective factor.As testing crew lacks experience, be not in good state or data volume that testing crew is grasped is not filled
Foot, the case where may leading to not judge even to judge by accident.Meanwhile it is cumbersome to the analysis of test result record Comparision, it reduces
Working efficiency.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of insulation resistance measuring devices, for measuring resistance
Insulation performance parameter, high certainty of measurement and stability is good can show that the insulation performance parameter of test item is dynamic on this basis
State change curve, and show defect that may be present in test item Condition assessment of insulation result and test item.
Technical solution adopted by the utility model to solve its technical problems is：A kind of insulation resistance measuring device is provided,
Including measuring circuit, wireless transport module and host computer, measuring circuit is connect by wireless transport module with host computer, measures electricity
Road includes mainly microcontroller, power supply, signal processing unit, divider resistance R, voltage sample resistance RV, current sampling resistor Ri, electricity
Stream sampling resistor Ri connect with testing resistance Rx, divider resistance connect with voltage sample resistance after with testing resistance place branch simultaneously
Connection, divider resistance R and voltage sample resistance RV are used to measure the voltage value of testing resistance, and current sampling resistor is to be measured for measuring
The current value of resistance, current signal and voltage signal that two branches are surveyed while passing through signal processing unit；Signal processing list
Member is transmitted to microcontroller for handling measured voltage value and current value, obtains the insulation performance parameter of tested resistance,
For switch for starting microcontroller, microcontroller connects power supply, provides power source reference value for measuring circuit, microcontroller will be for that will be tested
The insulation performance parameter of examination resistance is compared with the insulation parameter database that prestores.
According to the above technical scheme, the power supply is high-voltage DC power supply.
According to the above technical scheme, further include display unit, display unit is electronic touch screen, is connected with host computer, is used for
It shows measurement result, while showing time of measuring.
The utility model generate advantageous effect be：The utility model insulation resistance measuring device, for measuring resistance
Insulation performance parameter, high certainty of measurement and stability are good, can show the insulation performance dynamic state of parameters of test item on this basis
Change curve, and show defect that may be present in test item Condition assessment of insulation result and test item.
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：
Fig. 1 is insulation resistance measurement circuit schematic diagram in the utility model embodiment；
Fig. 2 is insulation measurement display unit schematic diagram in the utility model embodiment.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
In the utility model embodiment, a kind of insulation resistance measuring device, including measuring circuit, wireless transport module are provided
And host computer, measuring circuit are connect by wireless transport module with host computer, measuring circuit includes mainly microcontroller, power supply, letter
Number processing unit, divider resistance R, voltage sample resistance RV, current sampling resistor Ri, current sampling resistor Ri and testing resistance Rx
Series connection, divider resistance connect with voltage sample resistance after with testing resistance place branch circuit parallel connection, divider resistance R and voltage sample are electric
Resistance RV is used to measure the voltage value of testing resistance, and current sampling resistor is used to measure the current value of testing resistance, two branch institutes
The current signal and voltage signal of survey pass through signal processing unit simultaneously；Signal processing unit is used to handle measured voltage value
And current value, and it is transmitted to microcontroller, the insulation performance parameter of tested resistance is obtained, is switched for starting microcontroller, monolithic
Machine connects power supply, and power source reference value is provided for measuring circuit, microcontroller be used for by the insulation performance parameter of tested resistance with
The insulation parameter database that prestores is compared.
Further, the power supply is high-voltage DC power supply.
Further, further include display unit, display unit is electronic touch screen, is connected with host computer, is surveyed for showing
Amount as a result, show time of measuring simultaneously.
The utility model insulation resistance measuring device, the insulation performance parameter for measuring resistance, high certainty of measurement and
Stability is good, can show the insulation performance dynamic state of parameters change curve of test item on this basis, and shows test item insulation shape
Defect that may be present in state assessment result and test item.
Claims (3)
1. a kind of insulation resistance measuring device, which is characterized in that including measuring circuit, wireless transport module and host computer, measure
Circuit is connect by wireless transport module with host computer, and measuring circuit includes mainly microcontroller, power supply, signal processing unit, divides
Piezoresistance R, voltage sample resistance RV, current sampling resistor Ri, current sampling resistor Ri connect with testing resistance Rx, divider resistance
With branch circuit parallel connection where testing resistance, divider resistance R and voltage sample resistance RV for measuring after connecting with voltage sample resistance
The voltage value of testing resistance, current sampling resistor are used to measure the current value of testing resistance, the current signal that two branches are surveyed
Pass through signal processing unit simultaneously with voltage signal；Signal processing unit is used to handle measured voltage value and current value, and
It is transmitted to microcontroller, obtains the insulation performance parameter of tested resistance, microcontroller connects power supply, and power supply is provided for measuring circuit
Reference value, microcontroller is for the insulation performance parameter of tested resistance to be compared with the insulation parameter database that prestores.
2. insulation resistance measuring device according to claim 1, which is characterized in that the power supply is high-voltage DC power supply.
3. insulation resistance measuring device according to claim 1 or 2, which is characterized in that further include display unit, display is single
Member is electronic touch screen, is connected with host computer, for showing measurement result, while showing time of measuring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820469774.2U CN208092178U (en) | 2018-04-03 | 2018-04-03 | A kind of insulation resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820469774.2U CN208092178U (en) | 2018-04-03 | 2018-04-03 | A kind of insulation resistance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208092178U true CN208092178U (en) | 2018-11-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820469774.2U Active CN208092178U (en) | 2018-04-03 | 2018-04-03 | A kind of insulation resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208092178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333489A (en) * | 2018-04-03 | 2018-07-27 | 国家电网公司 | A kind of insulation resistance measuring device |
-
2018
- 2018-04-03 CN CN201820469774.2U patent/CN208092178U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333489A (en) * | 2018-04-03 | 2018-07-27 | 国家电网公司 | A kind of insulation resistance measuring device |
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