CN103245837B - A kind of insulation measurement method and measurement mechanism supporting arbitrfary point output voltage - Google Patents
A kind of insulation measurement method and measurement mechanism supporting arbitrfary point output voltage Download PDFInfo
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- CN103245837B CN103245837B CN201310182116.7A CN201310182116A CN103245837B CN 103245837 B CN103245837 B CN 103245837B CN 201310182116 A CN201310182116 A CN 201310182116A CN 103245837 B CN103245837 B CN 103245837B
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Abstract
The invention discloses a kind of insulation measurement method supporting arbitrfary point output voltage, it is characterized in that, it comprises the following steps: (1) arranges a main control chip in metering circuit, and is embedded in functional software at this main control chip; (2) a benchmark generation module is set, exports high voltage reference signal; (3) high-voltage inverted generation module and accurate negative-feedback circuit module are set, stable output high-tension measurement signal; (4) high pressure attenuator circuit module and loop current sampling module are set, export insulation measurement voltage signal and insulation measurement current signal; (5) low-pass filter is set, carries out filtering process; (6) an accurate analog-digital converter circuit module is set, carries out the digital conversion of signal; (7) display module is set, by measurement result output display.The invention also discloses a kind of measurement mechanism implementing the insulation measurement method of above-mentioned support arbitrfary point output voltage.
Description
Technical field
The present invention relates to electronic surveying field, be specifically related to a kind of insulation measurement method supporting arbitrfary point output voltage, and implement the measurement mechanism of the method.
Background technology
Insulation resistance refers to and applies voltage in the insulation local of adapter, then makes that table in or beyond the appearance of insulation local is upper leakage current occurs and the resistance value that goes out to reveal.The impact of the key elements such as it is primarily by insulating material, temperature, humidity, stained.The insulating resistance value that adapter sample is supplied is common is all the desired value under specification air prerequisite, and under some situation prerequisite, insulating resistance value has need not the decline of level.Other will notice the experimental voltage value of insulation resistance.Add voltage on insulator according to insulation resistance, walk the voltage that leakage current applies difference, just have need not consequence.
The insulation measurement mode of tradition 5 output voltages is with 5 rotating disc switches, switches carry out resistance by the method for machinery, then realizes the output of the insulation measurement voltage of 5 outputs after being amplified by high pressure generator.The mechanical realization principle combined circuit principle of rotary switch and wiring board PCB cooperation realize measuring voltage and export; That is: when rotary switch points to the some electrical voltage points in five voltage (50V/100V/250V/500V/1000V) ranges, relative inside configuration makes the circuit board line of its corresponding function connect, thus realizes measuring voltage output function.Traditional measurement instrument selectable output measuring voltage point is few, can not meet the application of each electric insulation fields of measurement.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of insulation measurement method supporting arbitrfary point output voltage is provided, and implement the measurement mechanism of the method.Modular circuit and accurate negative feedback module circuit can be really there is by software adjustment benchmark by increasing, and the auxiliary control of binding function software, enable main control chip do pwm signal to export, pwm signal is delivered to benchmark generation modular circuit and produce reference signal, realize software compensation.
The technical scheme that the present invention is adopted for achieving the above object is:
Support an insulation measurement method for arbitrfary point output voltage, it comprises the following steps:
(1) main control chip is set in metering circuit, and be embedded in functional software at this main control chip, user is by this functional software, select arbitrfary point measuring voltage, functional software sends selection signal, the selection signal that described main control chip is transmitted by functional software, identifies the required insulation resistance voltage measured of user;
(2) a benchmark generation module be connected with step (1) described main control chip is set, controls benchmark generation module by main control chip, export high voltage reference signal;
(3) the high-voltage inverted generation module be connected to each other mutually with step (2) described benchmark generation module and accurate negative-feedback circuit module are set, the described high voltage reference signal of step (2), enter in this high-voltage inverted generation module, high-voltage inverted generation module is to high voltage reference signal, do inversion magnification at high multiple, and the high-tension measurement signal needed for exporting, high-tension measurement signal makes high-tension measurement signal stabilization export by described accurate negative-feedback circuit module again;
(4) the high pressure attenuator circuit module be connected respectively with the described high-voltage inverted generation module of step (3) and a loop current sampling module is set, by described high pressure attenuator circuit module acquires insulation measurement voltage, and export insulation measurement voltage signal, gather insulation measurement electric current by loop current sampling module, and export insulation measurement current signal;
(5) arrange a low-pass filter be connected with loop current sampling module with step (4) described high pressure attenuator circuit module, the insulation measurement voltage signal described in step (4) and insulation measurement current signal carry out filtering by this low-pass filter;
(6) one and step (5) described low-pass filter are set, and the accurate analog-digital converter circuit module that step (1) described main control chip is connected, by the insulation measurement voltage signal of step (5) after filtering process and insulation measurement current signal, transfer to this accurate analog-digital converter circuit module, carry out the digital conversion of signal, then transfer to main control chip, carry out software algorithm process;
(7) display module be connected with step (1) described main control chip is set, by this display module, by measurement result output display.
Described functional software is in measuring process, complete following work successively: read high-tension measurement signal, high-tension measurement signal is after the decay of high pressure attenuator circuit module, export high pressure deamplification, after filtering is carried out to this high pressure deamplification, deliver to analog to digital converter and send into main control chip, high pressure deamplification is sampled, judged by the high pressure deamplification that sampling is returned, whether output voltage is in order the voltage signal of pre-conditioned output.
When the voltage signal of pre-conditioned output of being in order, then direct insulation resistance to be calculated; When the voltage signal of the pre-conditioned output of the program that do not meet, software compensates, and adjustment corresponding pulses width modulated pwm signal, finally reaches required output voltage measuring-signal.
Be provided with Ohm law formula in described functional software algorithm: R=V/I, functional software, according to the insulation measurement voltage obtained and insulation measurement electric current, draws insulating resistance value by this Ohm law formula operation.
A kind of measurement mechanism implementing the insulation measurement method of above-mentioned support arbitrfary point output voltage, it comprises a metering circuit, and this circuit is provided with interconnective main control chip, benchmark generation module, high-voltage inverted generation module, precisely negative-feedback circuit module, high pressure attenuator circuit module, current sample module of going the same way, low-pass filter, precisely analog-digital converter circuit module and display module.
Be embedded in functional software at described main control chip, this software comprises multiple built-in module.
Described functional software is when measuring, its built-in module realizes following function successively: read high-tension measurement signal, high-tension measurement signal is after the decay of high pressure attenuator circuit module, export high pressure deamplification, after filtering is carried out to this high pressure deamplification, deliver to analog to digital converter and send into main control chip, high pressure deamplification is sampled, judged by the high pressure deamplification that sampling is returned, whether output voltage is in order the voltage signal of pre-conditioned output.
When the voltage signal of pre-conditioned output of being in order, then direct insulation resistance to be calculated; When the voltage signal of the pre-conditioned output of the program that do not meet, software compensates, and adjustment corresponding pulses width modulated pwm signal, finally reaches required output voltage measuring-signal.
Be provided with Ohm law formula in described functional software algorithm: R=V/I, functional software, according to the insulation measurement voltage obtained and insulation measurement electric current, draws insulating resistance value by this Ohm law formula operation.
The invention has the beneficial effects as follows: method that need not be mechanical selects the way of output to do voltage, but the method adopting hardware to add software realizes; And all voltage output points all realize by Sofe Switch is corresponding soft.Can really there is modular circuit and accurate negative feedback module circuit by software adjustment benchmark in increase, regulate the corresponding reference signal exporting measuring voltage, realize arbitrfary point voltage to export, and the auxiliary control of binding function software, enable main control chip do pwm signal to export, pwm signal is delivered to benchmark generation modular circuit and produce reference signal, realize software compensation, make the measuring voltage of output more accurate.
Accompanying drawing explanation
Fig. 1 is the comprising modules schematic diagram of metering circuit of the present invention;
Fig. 2 is measurement procedure schematic diagram of the present invention.
Embodiment
Embodiment: see Fig. 1 and Fig. 2, the insulation measurement method of the support arbitrfary point output voltage that the present embodiment provides, it comprises the following steps:
(1) main control chip is set in metering circuit, and be embedded in functional software at this main control chip, user is by this functional software, select arbitrfary point measuring voltage, functional software sends selection signal, the selection signal that described main control chip is transmitted by functional software, identifies the required insulation resistance voltage measured of user;
(2) a benchmark generation module be connected with step (1) described main control chip is set further, controls benchmark generation module by main control chip, export high voltage reference signal;
(3) the high-voltage inverted generation module be connected to each other mutually with step (2) described benchmark generation module and accurate negative-feedback circuit module are set further, the described high voltage reference signal of step (2), enter in this high-voltage inverted generation module, high-voltage inverted generation module is to high voltage reference signal, do inversion magnification at high multiple, and the high-tension measurement signal needed for exporting, high-tension measurement signal makes high-tension measurement signal stabilization export by described accurate negative-feedback circuit module again;
(4) the high pressure attenuator circuit module be connected respectively with the described high-voltage inverted generation module of step (3) and a loop current sampling module is set further, by described high pressure attenuator circuit module acquires insulation measurement voltage, and export insulation measurement voltage signal, gather insulation measurement electric current by loop current sampling module, and export insulation measurement current signal;
(5) arrange a low-pass filter be connected with loop current sampling module with step (4) described high pressure attenuator circuit module again, the insulation measurement voltage signal described in step (4) and insulation measurement current signal carry out filtering by this low-pass filter;
(6) one and step (5) described low-pass filter are set again, and the accurate analog-digital converter circuit module that step (1) described main control chip is connected, by the insulation measurement voltage signal of step (5) after filtering process and insulation measurement current signal, transfer to this accurate analog-digital converter circuit module, carry out the digital conversion of signal, then transfer to main control chip, carry out software algorithm process;
(7) display module be connected with step (1) described main control chip is finally set, by this display module, by measurement result output display.
Described functional software is in measuring process, its built-in module completes following work successively: read high-tension measurement signal, high-tension measurement signal is after the decay of high pressure attenuator circuit module, export high pressure deamplification, after filtering is carried out to this high pressure deamplification, deliver to analog to digital converter and send into main control chip, high pressure deamplification is sampled, judged by the high pressure deamplification that sampling is returned, whether output voltage is in order the voltage signal of pre-conditioned output.
When the voltage signal of pre-conditioned output of being in order, then direct insulation resistance to be calculated; When the voltage signal of the pre-conditioned output of the program that do not meet, software compensates, and adjustment corresponding pulses width modulated pwm signal, finally reaches required output voltage measuring-signal.
Be provided with Ohm law formula in described functional software algorithm: R=V/I, functional software, according to the insulation measurement voltage obtained and insulation measurement electric current, draws insulating resistance value by this Ohm law formula operation.
A kind of measurement mechanism implementing the insulation measurement method of above-mentioned support arbitrfary point output voltage, it comprises in a metering circuit, is provided with interconnective main control chip, benchmark generation module, high-voltage inverted generation module, precisely negative-feedback circuit module, high pressure attenuator circuit module, loop current sampling module, low-pass filter, precisely analog-digital converter circuit module and display module in this circuit.
Be embedded in functional software at described main control chip, it is built-in with multiple functional module.
Described functional software is when measuring, its built-in multiple functional module realizes following function successively: read high-tension measurement signal, high-tension measurement signal is after the decay of high pressure attenuator circuit module, export high pressure deamplification, after filtering is carried out to this high pressure deamplification, deliver to analog to digital converter and send into main control chip, high pressure deamplification is sampled, judged by the high pressure deamplification that sampling is returned, whether output voltage is in order the voltage signal of pre-conditioned output.
When the voltage signal of pre-conditioned output of being in order, then direct insulation resistance to be calculated; When the voltage signal of the pre-conditioned output of the program that do not meet, software compensates, and adjustment corresponding pulses width modulated pwm signal, finally reaches required output voltage measuring-signal.Be provided with Ohm law formula in described functional software algorithm: R=V/I, functional software, according to the insulation measurement voltage obtained and insulation measurement electric current, draws insulating resistance value by this Ohm law formula operation.
But the foregoing is only better possible embodiments of the present invention, and be not used to limit to the scope of the claims of the present invention, therefore the equivalent structure change that all utilizations instructions of the present invention and accompanying drawing content are done, be all included in protection scope of the present invention.
Claims (9)
1. support an insulation measurement method for arbitrfary point output voltage, it is characterized in that, it comprises the following steps:
(1) main control chip is set in metering circuit, and be embedded in functional software at this main control chip, user is by this functional software, select arbitrfary point measuring voltage, functional software sends selection signal, the selection signal that described main control chip is transmitted by functional software, identifies the required insulation resistance voltage measured of user;
(2) a benchmark generation module be connected with step (1) described main control chip is set, controls benchmark generation module by main control chip, export high voltage reference signal;
(3) the high-voltage inverted generation module be connected to each other mutually with step (2) described benchmark generation module and accurate negative-feedback circuit module are set, the described high voltage reference signal of step (2), enter in this high-voltage inverted generation module, high-voltage inverted generation module is to high voltage reference signal, do inversion magnification at high multiple, and the high-tension measurement signal needed for exporting, high-tension measurement signal makes high-tension measurement signal stabilization export by described accurate negative-feedback circuit module again;
(4) the high pressure attenuator circuit module be connected respectively with the described high-voltage inverted generation module of step (3) and loop current sampling module are set, by described high pressure attenuator circuit module acquires insulation measurement voltage, and export insulation measurement voltage signal, gather insulation measurement electric current by loop current sampling module, and export insulation measurement current signal;
(5) arrange a low-pass filter be connected with loop current sampling module with step (4) described high pressure attenuator circuit module, the insulation measurement voltage signal described in step (4) and insulation measurement current signal carry out filtering by this low-pass filter;
(6) one and step (5) described low-pass filter are set, and the accurate analog-digital converter circuit module that step (1) described main control chip is connected, by the insulation measurement voltage signal of step (5) after filtering process and insulation measurement current signal, transfer to this accurate analog-digital converter circuit module, carry out the digital conversion of signal, then transfer to main control chip, carry out software algorithm process;
(7) display module be connected with step (1) described main control chip is set, by this display module, by measurement result output display.
2. the insulation measurement method of support arbitrfary point according to claim 1 output voltage, it is characterized in that, described functional software is in measuring process, complete following work successively: read high-tension measurement signal, high-tension measurement signal is after the decay of high pressure attenuator circuit module, export high pressure deamplification, after filtering is carried out to this high pressure deamplification, deliver to analog to digital converter and send into main control chip, high pressure deamplification is sampled, the high pressure deamplification that sampling is returned is judged, whether output voltage is in order the voltage signal of pre-conditioned output.
3. the insulation measurement method of support arbitrfary point according to claim 2 output voltage, is characterized in that, when the voltage signal of pre-conditioned output of being in order, then directly to calculate insulation resistance; When the voltage signal of the pre-conditioned output of the program that do not meet, software compensates, and adjustment corresponding pulses width modulated pwm signal, finally reaches required output voltage measuring-signal.
4. the insulation measurement method of support arbitrfary point according to claim 1 output voltage, it is characterized in that, Ohm law formula is provided with: R=V/I in described functional software, functional software, according to the insulation measurement voltage obtained and insulation measurement electric current, draws insulating resistance value by this Ohm law formula operation.
5. one kind implements the claims the measurement mechanism of the insulation measurement method of the support arbitrfary point output voltage described in 1, it is characterized in that, it comprises a metering circuit, is provided with interconnective main control chip, benchmark generation module, high-voltage inverted generation module, precisely negative-feedback circuit module, high pressure attenuator circuit module, loop current sampling module, low-pass filter, precisely analog-digital converter circuit module and display module in this circuit.
6. the measurement mechanism of the insulation measurement method of support arbitrfary point according to claim 5 output voltage, is characterized in that, be embedded in functional software at described main control chip, this software comprises multiple built-in module.
7. the measurement mechanism of the insulation measurement method of support arbitrfary point according to claim 6 output voltage, it is characterized in that, described functional software is when measuring, its built-in module realizes following function successively: read high-tension measurement signal, high-tension measurement signal is after the decay of high pressure attenuator circuit module, export high pressure deamplification, after filtering is carried out to this high pressure deamplification, deliver to analog to digital converter and send into main control chip, high pressure deamplification is sampled, the high pressure deamplification that sampling is returned is judged, whether output voltage is in order the voltage signal of pre-conditioned output.
8. the measurement mechanism of the insulation measurement method of support arbitrfary point according to claim 7 output voltage, is characterized in that, when the voltage signal of pre-conditioned output of being in order, then directly to calculate insulation resistance; When the voltage signal of the pre-conditioned output of the program that do not meet, software compensates, and adjustment corresponding pulses width modulated pwm signal, finally reaches required output voltage measuring-signal.
9. the measurement mechanism of the insulation measurement method of support arbitrfary point according to claim 6 output voltage, it is characterized in that, Ohm law formula is provided with: R=V/I in described functional software algorithm, functional software, according to the insulation measurement voltage obtained and insulation measurement electric current, draws insulating resistance value by this Ohm law formula operation.
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| CN105486928B (en) * | 2015-11-25 | 2019-02-15 | 广东工业大学 | A kind of thermoelectric material resistivity measurement circuit |
| PL233390B1 (en) * | 2017-11-14 | 2019-10-31 | Politechnika Gdanska | Method and system for assessing condition of electric insulation in electrical equipment |
| CN108037449A (en) * | 2018-01-03 | 2018-05-15 | 广西电网有限责任公司电力科学研究院 | A kind of high-voltage circuitbreaker automatic checkout system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203648Y (en) * | 2008-05-22 | 2009-03-04 | 优利德科技（东莞）有限公司 | Test device for insulation resistance of combined multifunctional digital universal meter |
| CN101539605A (en) * | 2009-04-30 | 2009-09-23 | 优利德科技（东莞）有限公司 | Electronic measurement method based on IP core and electronic measurement instrument |
| CN102520248A (en) * | 2011-12-05 | 2012-06-27 | 河南省电力公司南阳供电公司 | Insulation resistance and grounding resistance comprehensive tester based on programmable power supply |
| CN103091557A (en) * | 2011-10-31 | 2013-05-08 | 李尔公司 | Insulation resistance monitoring for vehicles with high-voltage power net |
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| US8766653B2 (en) * | 2011-03-15 | 2014-07-01 | Automotive Research & Testing Center | Measuring device for measuring insulation resistance of an electric vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203648Y (en) * | 2008-05-22 | 2009-03-04 | 优利德科技（东莞）有限公司 | Test device for insulation resistance of combined multifunctional digital universal meter |
| CN101539605A (en) * | 2009-04-30 | 2009-09-23 | 优利德科技（东莞）有限公司 | Electronic measurement method based on IP core and electronic measurement instrument |
| CN103091557A (en) * | 2011-10-31 | 2013-05-08 | 李尔公司 | Insulation resistance monitoring for vehicles with high-voltage power net |
| CN102520248A (en) * | 2011-12-05 | 2012-06-27 | 河南省电力公司南阳供电公司 | Insulation resistance and grounding resistance comprehensive tester based on programmable power supply |
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Address after: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee after: Uno Technology (China) Limited by Share Ltd Address before: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee before: Uni-Trend Technology (China) Co., Ltd. |