CN108333489A - A kind of insulation resistance measuring device - Google Patents
A kind of insulation resistance measuring device Download PDFInfo
- Publication number
- CN108333489A CN108333489A CN201810291200.5A CN201810291200A CN108333489A CN 108333489 A CN108333489 A CN 108333489A CN 201810291200 A CN201810291200 A CN 201810291200A CN 108333489 A CN108333489 A CN 108333489A
- Authority
- CN
- China
- Prior art keywords
- resistance
- insulation
- measuring
- microcontroller
- testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
Abstract
The invention 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 present invention is used to measure the insulation performance parameter of 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 show defect that may be present in test item Condition assessment of insulation result and test item.
Description
Technical field
The invention belongs to insulation measurement Applied research fields more particularly to a kind of insulation resistance measuring devices.
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.
Invention content
The technical problem to be solved by the invention is to provide a kind of insulation resistance measuring devices, for measuring the exhausted of resistance
Edge performance parameter, high certainty of measurement and stability are good, can show that the insulation performance dynamic state of parameters of test item becomes on this basis
Change curve, and shows defect that may be present in test item Condition assessment of insulation result and test item.
The technical solution adopted by the present invention to solve the technical problems is：A kind of insulation resistance measuring device is provided, including
Measuring circuit, wireless transport module and host computer, measuring circuit are connect by wireless transport module with host computer, measuring circuit master
To include microcontroller, power supply, signal processing unit, divider resistance R, voltage sample resistance RV, current sampling resistor Ri, electric current is adopted
Sample resistance Ri connects with testing resistance Rx, 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, and current sampling resistor is for measuring electricity to be measured
The current value of resistance, current signal and voltage signal that two branches are surveyed while passing through signal processing unit；Signal processing unit
For handling measured voltage value and current value, and it is transmitted to microcontroller, obtains the insulation performance parameter of tested resistance, open
It closes 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 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 beneficial effect comprise that：Insulation resistance measuring device of the present invention, the insulation performance for measuring resistance
Parameter, high certainty of measurement and stability are good, can show the insulation performance dynamic state of parameters change curve of test item on this basis,
And show defect that may be present in test item Condition assessment of insulation result and test item.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is insulation resistance measurement circuit schematic diagram in the embodiment of the present invention；
Fig. 2 is insulation measurement display unit schematic diagram in the embodiment of the present invention；
Fig. 3 is the workflow of measuring device in the embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
In the embodiment of the present invention, provide a kind of insulation resistance measuring device, including measuring circuit, wireless transport module and on
Position machine, measuring circuit connect by wireless transport module with host computer, measuring circuit mainly including microcontroller, power supply, signal at
Unit, divider resistance R, voltage sample resistance RV, current sampling resistor Ri are managed, current sampling resistor Ri goes here and there with testing resistance Rx
Connection, divider resistance connect with voltage sample resistance after with testing resistance place branch circuit parallel connection, divider resistance R and voltage sample 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, and two branches are surveyed
Current signal and voltage signal simultaneously pass through signal processing unit；Signal processing unit be 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, microcontroller
Power supply is connected, provides power source reference value for measuring circuit, microcontroller is for by the insulation performance parameter of tested resistance and in advance
Insulation parameter database is deposited to be 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.
Further, in a preferred embodiment of the invention, provide a kind of Intelligent insulation electric resistance measuring apparatus, mainly by
Three parts form：Insulation measurement module, wireless communication module and host computer.
Insulation measurement module includes measuring unit and display unit.Measuring unit is as shown in Figure 1, including switch, list
The mechanical, electrical source of piece, signal processing, divider resistance R, voltage sample resistance RV, current sampling resistor Ri, testing resistance RX.Display is single
Member is as shown in Fig. 2, including tested device information choice box 4, time of measuring display box 5, measurement result display box 6, data analysis
Key 7, data upload key 8, indicator light 9, testing crew choice box 10, dynamic trend display box 11 and assessment result display box 12.
The essential information of tested device may be selected in tested device information choice box.Time of measuring display box 5 shows time of measuring.Measure knot
Fruit display box 6 shows measuring as a result, including insulating resistance value, absorbing ratio or polarization index value.Data analysis key 7 can will be by
Examination facility information choice box 4, time of measuring display box 5, measurement result display box 6 and testing crew choice box 10 pass through channel radio
News module is uploaded to host computer, carries out analyzing processing, and handling result is sent to dynamic trend by wireless communication module and is shown
Show frame 11 and assessment result display box 12.
Data upload key 8 can be by tested device information choice box 4, time of measuring display box 5,6 and of measurement result display box
10 data of testing crew choice box are stored into the database of host computer, and are stored to sample database, and neural network parameter is updated.Refer to
Show that lamp can realize that indication signal prompts.Testing crew may be selected in testing crew choice box 10.Dynamic trend display box 11 can be shown
Tested device historical test data line chart and homotype equipment test data profile.Assessment result display box 12 can show subject
Whether apparatus insulated state is normal, such as abnormal, then shows defect that may be present.
As shown in figure 3, the specific works step of measuring device is as follows in the present embodiment：
(1) check device normal operation before measuring, wireless communication module transmission are normal；
(2) test connection is completed, starts and measures button, display unit shows measurement result and time of measuring；
(3) tested device information, Selection experiment personal information are selected；
(4) " data analysis " is clicked；
(5) measurement result is sent to host computer, data processing and analysis is carried out in host computer, analysis result is downloaded to
Insulation measurement module, and being shown on the display unit with written form, such as measurement result qualification, then data analysis green light
It is bright, if measurement result is unqualified, then data analysis when red.Simultaneously by the historical test data of tested device and homotype equipment
Test data downloads to insulation measurement module, and is shown on the display unit with broken line diagram form；
(6) " data upload " is clicked；
(7) host computer test data deposit database will be uploaded to, and it is stored in sample database, as study model update god
Parameter through Network Recognition.Green light in upload procedure uploads and terminates when red.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
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 |
|---|---|---|---|
| CN201810291200.5A CN108333489A (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 |
|---|---|---|---|
| CN201810291200.5A CN108333489A (en) | 2018-04-03 | 2018-04-03 | A kind of insulation resistance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108333489A true CN108333489A (en) | 2018-07-27 |
Family
ID=62933880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810291200.5A Pending CN108333489A (en) | 2018-04-03 | 2018-04-03 | A kind of insulation resistance measuring device |
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| Country | Link |
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| CN (1) | CN108333489A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557378A (en) * | 2018-11-27 | 2019-04-02 | 广东电网有限责任公司 | A kind of remote control insulation resistance measuring device |
| CN109754070A (en) * | 2018-12-28 | 2019-05-14 | 东莞钜威动力技术有限公司 | Insulation resistance value calculation method neural network based and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201156059Y (en) * | 2007-11-21 | 2008-11-26 | 中国船舶重工集团公司第七一二研究所 | Insulating resistor automatic detection recording apparatus |
| CN105358997A (en) * | 2013-11-22 | 2016-02-24 | 三菱电机株式会社 | Insulation detector and electric apparatus |
| CN208092178U (en) * | 2018-04-03 | 2018-11-13 | 国家电网公司 | A kind of insulation resistance measuring device |
-
2018
- 2018-04-03 CN CN201810291200.5A patent/CN108333489A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201156059Y (en) * | 2007-11-21 | 2008-11-26 | 中国船舶重工集团公司第七一二研究所 | Insulating resistor automatic detection recording apparatus |
| CN105358997A (en) * | 2013-11-22 | 2016-02-24 | 三菱电机株式会社 | Insulation detector and electric apparatus |
| CN208092178U (en) * | 2018-04-03 | 2018-11-13 | 国家电网公司 | A kind of insulation resistance measuring device |
Non-Patent Citations (2)
| Title |
|---|
| 刘刚等: "《高压交联聚乙烯电缆试验及维护技术》", 31 January 2012 * |
| 鲁铁成等: "《高电压工程》", 30 September 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557378A (en) * | 2018-11-27 | 2019-04-02 | 广东电网有限责任公司 | A kind of remote control insulation resistance measuring device |
| CN109754070A (en) * | 2018-12-28 | 2019-05-14 | 东莞钜威动力技术有限公司 | Insulation resistance value calculation method neural network based and electronic equipment |
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Application publication date: 20180727 |