CN118393268B - Operation monitoring method and system for high-voltage connector - Google Patents
Operation monitoring method and system for high-voltage connector Download PDFInfo
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- 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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
- G01R31/69—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
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Abstract
The application discloses an operation monitoring method and a monitoring system of a high-voltage connector, which belong to the technical field of high-voltage connectors and comprise the following steps: acquisition equipment acquires an analog signal source; normalizing the acquired analog signal source to generate a controllable signal source; setting a dynamic terminal resistor; establishing a first test model, outputting a test result, performing difference calculation, and outputting a calculation result; and setting a difference threshold, comparing the difference threshold with a difference calculation result, and carrying out early warning according to the comparison result. In the implementation process of the technical scheme of the application, an analog signal source is obtained through acquisition equipment, normalization processing is carried out on the analog signal source, a controllable signal source is generated, the controllable signal source is used as an input signal of a test process, a dynamic terminal resistor controlled by the maximum amplitude of the controllable signal source is arranged, the resistance of the terminal resistor is dynamically regulated and controlled, early warning is carried out according to a test result, and monitoring on the operation process of the high-voltage connector is realized.
Description
Technical Field
The application relates to the technical field of high-voltage connectors, in particular to an operation monitoring method and system of a high-voltage connector.
Background
The high voltage connector is also called a high voltage connector, is a type of connector for vehicles, generally refers to a connector which has a working voltage of 60V or more and is mainly responsible for transmitting large current, ensures the safety and stability of the connector by maintaining stable contact of conductive parts and utilizing an insulating material and a sealing structure, thereby realizing transmission of high voltage power or signals, and is widely applied to new energy automobiles.
Along with the gradual update development of new energy automobile platforms, more and more new energy automobiles start to use high-voltage platforms, and the high-voltage platforms can bring advantages of higher charging speed, better power performance, higher energy utilization rate and the like, in the new energy automobiles with the high-voltage platforms, the application of high-voltage connectors is wider, meanwhile, the high-voltage platforms also have some defects, for example, when high-voltage signal level is switched, for example, a large amount of electromagnetic interference signals are generated in high-voltage wire bundles in the operation process of a driving motor, if the signals cannot be well shielded, interference can be generated on low-voltage systems, satellite positioning, bluetooth, wiFi, cellular networks, radars and the like in the automobile, serious consequences can possibly be caused, and therefore, electromagnetic interference conditions of the high-voltage connectors need to be monitored.
In the prior art, electromagnetic shielding performance tests for high-voltage connectors are usually only available at the production end, namely, electromagnetic shielding performance tests are performed on the high-voltage connectors to be shipped, and existing test methods include surface transfer impedance tests, shielding effectiveness tests, shielding attenuation tests, coupling attenuation tests and the like, but the methods generally need to use corresponding tools or software analysis systems and cannot be applied to the actual application process of the high-voltage connectors, namely, when the high-voltage connectors are mounted on new energy automobiles of a high-voltage platform, direct electromagnetic shielding performance monitoring is difficult to be performed on the high-voltage connectors, so that hidden danger exists in the operation process of the new energy automobiles.
It is therefore desirable to provide a method and system for monitoring the operation of a high voltage connector to solve the above-mentioned problems.
It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.
Disclosure of Invention
Based on the above problems existing in the prior art, the present application aims to solve the problems: the operation monitoring method and the monitoring system for the high-voltage connector are provided, and the high-voltage connector in the operation process is monitored by acquiring an analog signal source in a high-voltage platform and carrying out normalization processing on the analog signal source.
The technical scheme adopted for solving the technical problems is as follows: a method of monitoring operation of a high voltage connector, the method comprising:
The acquisition equipment acquires an analog signal source, wherein the analog signal source comprises a high-frequency signal source and a radio-frequency signal source, and the analog signal source is from an installation platform of a high-voltage connector;
Normalizing the acquired analog signal source to generate a controllable signal source, and taking the controllable signal source as an input signal for testing the electromagnetic shielding performance of the high-voltage connector;
Setting a dynamic termination resistor, wherein the magnitude of the dynamic termination resistor is controlled by the maximum amplitude value of the controllable signal source;
Establishing a first test model, outputting a test result, acquiring a factory test value according to the model of the high-voltage connector, calculating the difference between the test result and the factory test value, and outputting a calculation result;
And setting a difference threshold, comparing the difference threshold with a difference calculation result, and carrying out early warning according to the comparison result.
In the implementation process of the technical scheme of the application, an analog signal source is obtained through acquisition equipment, normalization processing is carried out on the analog signal source, a controllable signal source is generated, the controllable signal source is used as an input signal of a test process, a dynamic terminal resistor controlled by the maximum amplitude of the controllable signal source is arranged, the resistance of the terminal resistor is dynamically regulated and controlled, early warning is carried out according to a test result, and monitoring on the operation process of the high-voltage connector is realized.
Further, the normalizing processing for the obtained analog signal source further includes:
Firstly, carrying out period normalization processing on the acquired analog signal sources, setting a fixed continuous period, intercepting the analog signal sources in the fixed continuous period, wherein the analog signal sources are continuous signals in the fixed continuous period;
And carrying out amplitude normalization processing on the analog signal source subjected to the period normalization processing, wherein the amplitude normalization processing adopts a differential value method.
Furthermore, the period normalization processing is carried out on the acquired analog signal sources by adopting a common period selection method, a minimum continuous period threshold value is set before the period normalization processing is carried out, the analog signal sources are screened, the analog signal sources smaller than the minimum period threshold value are ignored, and a fixed continuous period is acquired from the rest available analog signal sources.
Further, in the fixed continuous period, each analog signal source has continuity, and the continuity judgment of the analog signal in the fixed continuous period can adopt a time domain determination method to judge whether the analog signal has a determined value at any time point in the time domain.
Further, the amplitude normalization processing is realized by adopting a micro-division value method, and the method comprises the following steps:
Differentiating the obtained fixed continuous period to enable the fixed continuous period to have a plurality of value points, obtaining signal amplitude corresponding to each value point, generating a normalized amplitude value corresponding to each value point through a statistical algorithm, and aggregating the generated normalized amplitude values to form a controllable signal source which is used as an input signal for testing the electromagnetic shielding performance of the high-voltage connector.
Further, the statistical algorithm adopts a mean value algorithm.
Further, the first test model has an input end and an output end, wherein the input end is used for inputting various parameters of the high-voltage connector, and the output end is used for outputting a test result, and the unit of the test result is decibel microampere.
Further, the magnitude of the difference threshold is set to be one fiftieth of a factory test value, when the difference calculation result is larger than or equal to the difference threshold, an early warning signal is output, and when the difference calculation result is smaller than the difference threshold, early warning is not carried out.
An operation monitoring system for a high voltage connector, the system comprising:
the analog signal source acquisition module is used for acquiring an analog signal source by the acquisition equipment, wherein the analog signal source comprises a high-frequency signal source and a radio-frequency signal source, and the analog signal source is from an installation platform of the high-voltage connector;
the normalization processing module is used for carrying out normalization processing on the acquired analog signal source to generate a controllable signal source, and taking the controllable signal source as an input signal for testing the electromagnetic shielding performance of the high-voltage connector, and the normalization processing module further comprises a period normalization processing module and an amplitude normalization processing module;
The dynamic terminal resistor setting module is used for setting a dynamic terminal resistor, and the magnitude of the dynamic terminal resistor is controlled by the maximum amplitude value of the controllable signal source;
the test output module is used for establishing a first test model, outputting a test result, acquiring a factory test value according to the model of the high-voltage connector, calculating the difference value between the test result and the factory test value, and outputting the calculation result;
and the difference comparison module is used for setting a difference threshold value, comparing the difference threshold value with a difference calculation result and carrying out early warning according to the comparison result.
The beneficial effects of the application are as follows: according to the operation monitoring method and the operation monitoring system for the high-voltage connector, the analog signal source is obtained through the acquisition equipment, the analog signal source is normalized to generate the controllable signal source, the controllable signal source is used as an input signal in the test process, the dynamic terminal resistor controlled by the maximum amplitude of the controllable signal source is arranged, the resistance of the terminal resistor is dynamically regulated and controlled, early warning is carried out according to the test result, and the monitoring on the operation process of the high-voltage connector is realized.
In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic diagram illustrating a method for monitoring operation of a high voltage connector according to the present application;
Fig. 2 is a schematic block diagram of an operation monitoring system of a high voltage connector according to the present application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
Embodiment one: as shown in fig. 1, the present application provides a method for monitoring operation of a high-voltage connector, where the monitoring method is applied to an operation process of the high-voltage connector, the high-voltage connector is a connector for connecting various high-voltage electrical devices, generally used in a new energy automobile, with a working voltage above 60V and mainly responsible for transmitting large current, in a high-voltage environment, each device and a high-voltage wire harness generate a large amount of electromagnetic interference signals, and if the signals cannot be well shielded, the signals will interfere with other devices, so that the high-voltage connector generally needs to perform electromagnetic shielding design during design, at present, a common electromagnetic shielding layer is generally used to perform operations such as reflection, absorption and guidance of electromagnetic interference signals by using shielding materials, so as to reduce electromagnetic interference, and for an electromagnetic shielding performance test of the high-voltage connector, the method can only test theoretical performance of the high-voltage connector by a specific testing device, but cannot simulate a real environment, and thus needs to be improved, the high-voltage connector needs to be connected to an input system, and a system is only reserved for the input system to be opened during the normal operation process, and the method includes the steps of connecting the high-voltage connector:
step A: the acquisition equipment acquires an analog signal source, wherein the analog signal source comprises a high-frequency signal source and a radio-frequency signal source, and the analog signal source is from an installation platform of a high-voltage connector;
in order to test the electromagnetic shielding performance of the high-voltage connector, a signal source is needed, in the existing electromagnetic shielding performance test, a radio frequency signal source and a receiving device are usually adopted, but in the application process of the high-voltage connector, the electromagnetic shielding performance test cannot be performed due to the fact that the signal source is usually not additionally connected, so that an analog signal source needs to be acquired through acquisition equipment, the acquisition equipment can be a data acquisition device, the data acquisition device can acquire various signals generated in the operation process of a new energy automobile and can take the acquired signals as the analog signal source, and therefore a signal generation device is not required to be additionally added, and the signal source acquired from the new energy automobile can be attached to the operation environment of the high-voltage connector;
In the new energy automobile, the analog signal source collected by the collecting device comprises various high-frequency signal sources, such as a high-frequency signal source of a kHz level generated by a Motor Controller (MCU) in the working process, and a Pulse Width Modulation (PWM) signal is generated to drive a motor; the DC/DC converter (direct current-direct current converter) works at high frequency of kHz level, converts direct current of the high-voltage platform into low-voltage direct current, and supplies the low-voltage direct current to the vehicle-mounted electronic equipment, and high-frequency signals are generated in the switching process of the vehicle-mounted electronic equipment; a vehicle-mounted charger (OBC) for converting alternating current into direct current to supply power to the battery to generate high-frequency signals and the like;
the system comprises a radio frequency signal source, a Tire Pressure Monitoring System (TPMS) and a wireless communication system, wherein the radio frequency signal source comprises a radio frequency signal of a vehicle-mounted wireless communication system working at a GHz level, a radio frequency signal for communication is generated between a wireless key and a vehicle, and the radio frequency signal is generated in the process of monitoring the tire pressure by using the radio frequency signal;
The high-frequency signal source and the radio-frequency signal source are generated on an application platform of the high-voltage connector and can be used as signal sources for electromagnetic shielding performance test of the high-voltage connector;
And (B) step (B): normalizing the acquired analog signal source to generate a controllable signal source, and taking the controllable signal source as an input signal for testing the electromagnetic shielding performance of the high-voltage connector;
Because the analog signal sources collected from the mounting platform of the high-voltage connector through the collecting equipment are numerous in types, the electromagnetic environment of the new energy automobile is complex, signals generated by all components can be mutually influenced, the directly collected analog signal sources cannot be used in electromagnetic shielding performance test of the high-voltage connector, normalization processing is needed to be carried out, a controllable signal source is generated, the controllable signal source is used as a signal source for electromagnetic shielding performance test, and specifically, the normalization processing of the obtained analog signal sources further comprises the following steps:
Step 101: firstly, carrying out period normalization processing on the acquired analog signal sources, setting a fixed continuous period, intercepting the analog signal sources in the fixed continuous period, wherein the analog signal sources are continuous signals in the fixed continuous period;
Because the analog signal source is generated by running at each position of the installation platform (namely the new energy automobile), the acquired signals also have the problems of non-uniform period span, discontinuous signals and the like, and the acquired signals need to be subjected to period normalization processing, for example, a high-frequency signal generated by a motor controller in the running process is a continuous signal, and a vehicle-mounted charger does not keep running at all times, so that the generated high-frequency signal usually comprises a breakpoint and is a discontinuous signal and cannot be directly applied to electromagnetic shielding performance monitoring of a high-voltage connector;
Specifically, a common period selection method is adopted for period normalization processing of the acquired analog signal sources, a minimum continuous period threshold value is set before the period normalization processing, the analog signal sources are screened, the analog signal sources smaller than the minimum period threshold value are ignored, a fixed continuous period is acquired from the rest available analog signal sources, and each available analog signal source is a continuous signal in the acquired fixed continuous period, so that the period normalization processing is realized;
In the fixed continuous period, each analog signal source has continuity, so that subsequent processing can be performed, if a certain analog signal source has a signal breakpoint in the fixed continuous period, the analog signal source with the signal breakpoint is required to be removed, a time domain determining method can be adopted to determine whether the analog signal in the fixed continuous period has a determined value at any time point in the time domain, and if the analog signal source has no determined value at any time point in the fixed continuous period, the analog signal source can be determined to be discontinuous in the fixed continuous period;
step 102: carrying out amplitude normalization processing on the analog signal source subjected to the period normalization processing, wherein the amplitude normalization processing adopts a differential value method;
After the period normalization is performed on the analog signal source, different analog signals still have different amplitudes, even if the analog signals are generated by the same device, the signal amplitudes formed at different times are not necessarily consistent, so that amplitude normalization processing is required, and the amplitude normalization processing is realized by adopting a differential value method, and the method comprises the following steps:
Differentiating the obtained fixed continuous period to enable the fixed continuous period to have as many value points as possible, then obtaining signal amplitude corresponding to each value point, generating a normalized amplitude value corresponding to each value point through a statistical algorithm, and aggregating the generated normalized amplitude values to form a controllable signal source, wherein the controllable signal source is used as an input signal for testing the electromagnetic shielding performance of the high-voltage connector;
Under the condition that the amplitudes of the analog signal sources are inconsistent, even if the period normalization processing is performed, when the input source of the test is selected, the selection is still difficult, although the analog signal sources after the period normalization processing can be used as the input source of the test, the method can generate different test results due to different amplitudes of the analog signal sources, and the existence of a plurality of analog signal sources can also generate interference, so that the electromagnetic shielding performance test can not be performed on the high-voltage connector in the operation process, therefore, the amplitude normalization processing is performed on the analog signal sources after the period normalization processing through a differential value method, wherein the differentiation of the fixed continuous period can be performed by adopting the existing computer tool, and the statistical algorithm can be adopted by adopting the mean value algorithm, and is not described in detail in the embodiment;
step C: setting a dynamic termination resistor, wherein the magnitude of the dynamic termination resistor is controlled by the maximum amplitude value of the controllable signal source;
In the signal transmission process, especially in the high-frequency signal transmission process, the signal wavelength is shorter than that of a transmission channel, a reflected wave is formed at the terminal of the transmission channel by the signal, and an original signal is interfered, so in the prior art, a terminal resistor is additionally arranged at the terminal of the transmission channel, so that the signal is not reflected after reaching the terminal of the transmission channel;
Specifically, the dynamic termination resistor can refer to the prior art, and is composed of a reverse biased diode, a triode, a MOS field effect transistor and other components, wherein the output impedance of the components is used as the resistance value of the dynamic resistor, the resistance value of the dynamic termination resistor is related to the input current and the voltage variation value of an output end, when a controllable signal source is used as input, the maximum amplitude is used as the input of the dynamic termination resistor, and the corresponding resistance value can bear the input of the current controllable signal source, so that the requirement is met;
The signal amplitude and the input current can be converted, and the conversion mode of the signal amplitude and the current in the prior art can be specifically referred, which is not described in detail in this embodiment;
Step D: establishing a first test model, outputting a test result, acquiring a factory test value according to the model of the high-voltage connector, calculating the difference between the test result and the factory test value, and outputting a calculation result;
The first test model is provided with an input end and an output end, wherein the input end is used for inputting various parameters of the high-voltage connector, the output end is used for outputting a test result, the test result is in decibel microamperes, the first test model can refer to the prior art or the prior standard, meanwhile, the high-voltage connector can be tested when leaving a factory, the high-voltage connector is provided with a factory test value, after the model of the high-voltage connector is obtained, the factory test value can be called to calculate the difference value between the test result and the factory test value, and the calculated result is output.
Step E: and setting a difference threshold, comparing the difference threshold with a difference calculation result, and carrying out early warning according to the comparison result.
The factory test value is electromagnetic shielding performance of the high-voltage connector when the high-voltage connector leaves the factory, the test result is electromagnetic shielding performance of the high-voltage connector in the operation process, the high-voltage connector cannot be completely consistent with the factory test value due to circuit influence, operation environment influence and the like in the operation process, a certain fluctuation range is needed, the fact that the high-voltage connector operates normally is indicated in the fluctuation range, the electromagnetic shielding performance is normal, therefore, a difference threshold is set, in the embodiment, the size of the difference threshold can be set to be one fiftieth of the factory test value, when the difference calculation result is larger than or equal to the difference threshold, an early warning signal is output, and when the difference calculation result is smaller than the difference threshold, early warning is not carried out.
Embodiment two: the present embodiment provides a system for monitoring operation of a high-voltage connector, where the system performs the monitoring method in the first embodiment to implement operation monitoring of the high-voltage connector of a loader, as shown in fig. 2, and the monitoring system includes:
the analog signal source acquisition module is used for acquiring an analog signal source by the acquisition equipment, wherein the analog signal source comprises a high-frequency signal source and a radio-frequency signal source, and the analog signal source is from an installation platform of the high-voltage connector;
the normalization processing module is used for carrying out normalization processing on the acquired analog signal source to generate a controllable signal source, and taking the controllable signal source as an input signal for testing the electromagnetic shielding performance of the high-voltage connector, and the normalization processing module further comprises a period normalization processing module and an amplitude normalization processing module;
The dynamic terminal resistor setting module is used for setting a dynamic terminal resistor, and the magnitude of the dynamic terminal resistor is controlled by the maximum amplitude value of the controllable signal source;
the test output module is used for establishing a first test model, outputting a test result, acquiring a factory test value according to the model of the high-voltage connector, calculating the difference value between the test result and the factory test value, and outputting the calculation result;
and the difference comparison module is used for setting a difference threshold value, comparing the difference threshold value with a difference calculation result and carrying out early warning according to the comparison result.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. A method for monitoring operation of a high voltage connector, comprising: the method comprises the following steps:
The acquisition equipment acquires an analog signal source, wherein the analog signal source comprises a high-frequency signal source and a radio-frequency signal source, the analog signal source is from a mounting platform of a high-voltage connector, and the mounting platform is a new energy automobile platform;
Normalizing the acquired analog signal source to generate a controllable signal source, and taking the controllable signal source as an input signal for testing the electromagnetic shielding performance of the high-voltage connector;
Setting a dynamic termination resistor, wherein the magnitude of the dynamic termination resistor is controlled by the maximum amplitude value of the controllable signal source;
Establishing a first test model, outputting a test result, acquiring a factory test value according to the model of the high-voltage connector, calculating the difference between the test result and the factory test value, and outputting a calculation result;
Setting a difference threshold, comparing the difference threshold with a difference calculation result, and carrying out early warning according to the comparison result;
The normalizing processing of the acquired analog signal source further comprises:
Firstly, carrying out period normalization processing on the acquired analog signal sources, setting a fixed continuous period, intercepting the analog signal sources in the fixed continuous period, wherein the analog signal sources are continuous signals in the fixed continuous period;
Carrying out amplitude normalization processing on the analog signal source subjected to the period normalization processing, wherein the amplitude normalization processing adopts a differential value method;
And (3) carrying out period normalization processing on the acquired analog signal sources by adopting a common period selection method, setting a minimum continuous period threshold before the period normalization processing, screening the analog signal sources, omitting the analog signal sources smaller than the minimum period threshold, and acquiring a fixed continuous period from the rest available analog signal sources.
2. The method of operation monitoring of a high voltage connector according to claim 1, wherein: in the fixed continuous period, each analog signal source has continuity, the continuity judgment of the analog signals in the fixed continuous period adopts a time domain determination method, and whether the analog signals have a determined value at any time point is judged in the time domain.
3. The method of operation monitoring of a high voltage connector according to claim 1, wherein: the amplitude normalization processing is realized by adopting a micro-division value method, and the method comprises the following steps:
Differentiating the obtained fixed continuous period to enable the fixed continuous period to have a plurality of value points, obtaining signal amplitude corresponding to each value point, generating a normalized amplitude value corresponding to each value point through a statistical algorithm, and aggregating the generated normalized amplitude values to form a controllable signal source which is used as an input signal for testing the electromagnetic shielding performance of the high-voltage connector.
4. A method of monitoring operation of a high voltage connector according to claim 3, wherein: the statistical algorithm adopts a mean value algorithm.
5. The method of operation monitoring of a high voltage connector according to claim 1, wherein: the first test model is provided with an input end and an output end, wherein the input end is used for inputting various parameters of the high-voltage connector, and the output end is used for outputting a test result, and the unit of the test result is decibel microampere.
6. The method of operation monitoring of a high voltage connector according to claim 1, wherein: the magnitude of the difference threshold is set to be one fiftieth of a factory test value, when the difference calculation result is greater than or equal to the difference threshold, an early warning signal is output, and when the difference calculation result is smaller than the difference threshold, early warning is not carried out.
7. A method and a system for monitoring the operation of a high-voltage connector are characterized in that: the system comprises:
the system comprises an analog signal source acquisition module, a control module and a control module, wherein the analog signal source acquisition module is used for acquiring an analog signal source by acquisition equipment, the analog signal source comprises a high-frequency signal source and a radio-frequency signal source, the analog signal source is from an installation platform of a high-voltage connector, and the installation platform is a new energy automobile platform;
The normalization processing module is used for carrying out normalization processing on the acquired analog signal source to generate a controllable signal source, and taking the controllable signal source as an input signal for testing the electromagnetic shielding performance of the high-voltage connector, and the normalization processing module further comprises a period normalization processing module and an amplitude normalization processing module; the normalizing processing of the acquired analog signal source further comprises:
Firstly, carrying out period normalization processing on the acquired analog signal sources, setting a fixed continuous period, intercepting the analog signal sources in the fixed continuous period, wherein the analog signal sources are continuous signals in the fixed continuous period;
Carrying out amplitude normalization processing on the analog signal source subjected to the period normalization processing, wherein the amplitude normalization processing adopts a differential value method;
The method comprises the steps of performing period normalization processing on acquired analog signal sources by a common period selection method, setting a minimum continuous period threshold before the period normalization processing, screening the analog signal sources, omitting the analog signal sources smaller than the minimum period threshold, and acquiring fixed continuous periods from the rest available analog signal sources;
The dynamic terminal resistor setting module is used for setting a dynamic terminal resistor, and the magnitude of the dynamic terminal resistor is controlled by the maximum amplitude value of the controllable signal source;
the test output module is used for establishing a first test model, outputting a test result, acquiring a factory test value according to the model of the high-voltage connector, calculating the difference value between the test result and the factory test value, and outputting the calculation result;
and the difference comparison module is used for setting a difference threshold value, comparing the difference threshold value with a difference calculation result and carrying out early warning according to the comparison result.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033704A (en) * | 2012-12-11 | 2013-04-10 | 上海汽车集团股份有限公司 | Electric vehicle high-pressure electrical failure dynamic simulation test system and method |
| CN103323730A (en) * | 2013-06-06 | 2013-09-25 | 东辰塑胶（南通）有限公司 | High-voltage multifunctional measuring instrument |
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| CN106501650A (en) * | 2016-11-25 | 2017-03-15 | 中国商用飞机有限责任公司 | Method and system for detecting electromagnetic interference |
| CN110231535B (en) * | 2019-06-24 | 2021-11-30 | 爱驰汽车有限公司 | Method and system for detecting running state of high-voltage circuit |
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| CN113155307B (en) * | 2021-01-18 | 2023-11-03 | 国网吉林省电力有限公司长春供电公司 | Built-in temperature online monitoring system for high-voltage power cable joints |
| CN113238090B (en) * | 2021-05-12 | 2022-04-12 | 电子科技大学 | Intelligent selection method for signal source instrument |
| CN115267373B (en) * | 2022-06-17 | 2023-04-07 | 成都中创锐科信息技术有限公司 | Radiation source dynamic scene simulation method and device based on vector signal generation device |
| CN116280628A (en) * | 2023-01-16 | 2023-06-23 | 浙江图盛输变电工程有限公司 | Partial discharge test method for high-voltage power equipment withstand voltage test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103033704A (en) * | 2012-12-11 | 2013-04-10 | 上海汽车集团股份有限公司 | Electric vehicle high-pressure electrical failure dynamic simulation test system and method |
| CN103323730A (en) * | 2013-06-06 | 2013-09-25 | 东辰塑胶（南通）有限公司 | High-voltage multifunctional measuring instrument |
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