CN119147839A - Risk identification and control system applied to conduction harassment test - Google Patents
Risk identification and control system applied to conduction harassment test Download PDFInfo
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- CN119147839A CN119147839A CN202411597079.0A CN202411597079A CN119147839A CN 119147839 A CN119147839 A CN 119147839A CN 202411597079 A CN202411597079 A CN 202411597079A CN 119147839 A CN119147839 A CN 119147839A
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- 238000012360 testing method Methods 0.000 title claims abstract description 67
- 230000005855 radiation Effects 0.000 claims abstract description 52
- 239000000523 sample Substances 0.000 claims abstract description 46
- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 14
- 230000006698 induction Effects 0.000 claims description 13
- 238000002847 impedance measurement Methods 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010183 spectrum analysis Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
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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
-
- 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
- G01R31/002—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing where the device under test is an electronic circuit
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- Electromagnetism (AREA)
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a risk identification and control system applied to a conduction harassment test, and relates to the technical field of conduction harassment tests, comprising a harassment risk identification module, a detection module and a control module, wherein the harassment risk identification module is used for identifying harassment risks of a tested product and comprehensively analyzing an identification result; the disturbance control module receives the comprehensive analysis result transmitted by the disturbance risk identification module, calculates corresponding filtering parameters according to the comprehensive analysis result, controls parameters in the adjustable resistor, inductor and capacitor combination box, and then carries out a circulation test until the disturbance risk is relieved. The invention adopts the radiation sensing probe and the conduction sensing probe to analyze the electromagnetic disturbance of the product in the sample stage of the product, thereby increasing the accuracy of disturbance risk identification, and after the electromagnetic disturbance risk is identified, a responsive filter circuit can be designed through the adjustable resistor, inductor and capacitor combination box, thereby solving the problem of the conduction disturbance.
Description
Technical Field
The invention belongs to the technical field, and particularly relates to a risk identification and control system applied to conduction harassment tests.
Background
In the research and development and production process of electronic products, conduction disturbance test is an important test item for evaluating electromagnetic interference generated by the electronic products to the outside during normal operation.
However, there are some disadvantages to the current conduction harassment testing process:
1. The prior art can only conduct electromagnetic disturbance test of a finished product, and the disturbance test risk identification mode is single, so that the accuracy of risk identification is reduced;
2. The prior art cannot give corresponding control measures after identifying the electromagnetic compatibility risk, so that the product cannot be ensured to pass the conduction harassment test.
Based on this, we propose a risk identification and control system applied to conduction disturbance tests.
Disclosure of Invention
The invention aims to provide a risk identification and control system applied to a conduction disturbance test, aiming at the problems that the accuracy of risk identification in the existing conduction disturbance test process is reduced and corresponding control measures cannot be given after electromagnetic compatibility risks are identified.
The invention is realized by the following technical scheme that the risk identification and control system applied to the conduction harassment test comprises:
The harassment risk identification module is used for identifying harassment risks of the tested products, comprehensively analyzing the identification results and determining the overall harassment risk level of the tested products;
The disturbance control module is connected with the disturbance risk identification module, receives the comprehensive analysis result transmitted by the disturbance risk identification module, calculates corresponding filtering parameters according to the comprehensive analysis result, and performs a cyclic test until the disturbance risk is relieved by controlling the parameters in the adjustable resistor, inductor and capacitor combined box, and adjusts the design of the tested product according to the parameters of the final adjustable resistor, inductor and capacitor combined box to ensure that the tested product passes the conduction disturbance test.
Preferably, the identification module of the harassment risk comprises a radiation sensing probe, a conduction sensing probe and a signal analyzer, wherein the radiation sensing probe and the conduction sensing probe are connected with the signal analyzer;
The radiation induction probe is used for identifying the radiation disturbance risk of the tested product and analyzing whether the radiation disturbance risk exists or not;
The conduction induction probe is used for conducting disturbance risk identification on the tested product and analyzing whether the conduction disturbance risk exists.
Preferably, the method for identifying the risk of radiation disturbance comprises the following steps:
The radiation induction probe is used for measuring the radiation field intensity of the tested product at different distances and angles, the measurement can be carried out under far field or near field conditions, and the measuring distance and angle can be determined according to the radiation characteristics of the tested product and the requirements of the test standard.
Connecting a radiation induction probe to a signal analyzer, setting a proper frequency range and a proper resolution bandwidth, and recording radiation field intensity values of a tested product under different frequencies;
and if the radiation field intensity exceeds the limit value specified by the test standard, the radiation disturbance risk of the tested product is indicated.
Preferably, the method for identifying the risk of conducting harassment comprises the following steps:
Conduction voltage measurement:
Conducting voltage measurement is carried out on conductors such as a power line, a signal line and the like of a tested product by using a conducting induction probe;
Connecting a conduction induction probe to an information analyzer, setting proper measurement parameters, and recording conduction voltage values of a tested product under different frequencies;
Analyzing the conduction voltage measurement result to judge whether the conduction disturbance risk exists in the tested product, and if the conduction voltage exceeds the limit value specified by the test standard, indicating that the conduction disturbance risk exists in the tested product;
Conduction current measurement:
conducting current measurement is carried out on conductors such as a power line, a signal line and the like of a tested product by using a current probe;
Comparing the measured conduction current value with a limit value regulated by a test standard to judge whether the conduction disturbance risk exists in the tested product, and if the conduction current exceeds the limit value, indicating that the conduction disturbance risk exists in the tested product;
Analyzing the conduction current measurement result to determine the conduction disturbance source of the tested product;
conduction impedance measurement:
conducting impedance measurement is carried out on conductors such as a power line, a signal line and the like of a tested product by using an impedance analyzer;
A conductive disturbance path of the product under test is determined based on the conductive impedance measurement, for example, if the impedance of the conductor changes at a certain frequency, it may be that a conductive disturbance path exists at that frequency.
And corresponding corrective measures are adopted to reduce the conduction harassment risk of the tested product. For example, the conductive disturbance may be reduced by adding filters, improving grounding, optimizing wiring, and the like.
Preferably, the harassment control module comprises a controller and an adjustable resistor, inductor and capacitor combination box, one end of the controller is connected with the signal analyzer, the other end of the controller is connected with the adjustable resistor, inductor and capacitor combination box, and the adjustable resistor, inductor and capacitor combination box is arranged in a test circuit, so that the circuit can be conveniently debugged and tested.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the electromagnetic disturbance analysis is carried out on the product in the sample stage of the product by adopting the radiation sensing probe and the conduction sensing probe, so that the accuracy of disturbance risk identification is improved.
2. After the conductive electromagnetic disturbance risk is identified, a responsive filter circuit can be designed through an adjustable resistor, inductor and capacitor combination box, so that the conductive disturbance problem is solved, and the conductive disturbance is ensured to pass a conductive disturbance test.
Drawings
FIG. 1 is a block diagram of a risk identification and control system for conductive disturbance testing.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a risk identification and control system for conducting disturbance test includes:
The harassment risk identification module is used for identifying harassment risks of the tested products, comprehensively analyzing the identification results and determining the overall harassment risk level of the tested products;
The disturbance control module is connected with the disturbance risk identification module, receives the comprehensive analysis result transmitted by the disturbance risk identification module, calculates corresponding filtering parameters according to the comprehensive analysis result, and performs a cyclic test until the disturbance risk is relieved by controlling the parameters in the adjustable resistor, inductor and capacitor combined box, and adjusts the design of the tested product according to the parameters of the final adjustable resistor, inductor and capacitor combined box to ensure that the tested product passes the conduction disturbance test.
The harassment risk identification module comprises a radiation sensing probe, a conduction sensing probe and a signal analyzer, wherein the radiation sensing probe and the conduction sensing probe are connected with the signal analyzer;
The radiation induction probe is used for identifying the radiation disturbance risk of the tested product and analyzing whether the radiation disturbance risk exists or not;
The conduction induction probe is used for conducting disturbance risk identification on the tested product and analyzing whether the conduction disturbance risk exists.
The harassment control module comprises a controller and an adjustable resistor, inductor and capacitor combination box, one end of the controller is connected with the signal analyzer, the other end of the controller is connected with the adjustable resistor, inductor and capacitor combination box, and the adjustable resistor, inductor and capacitor combination box is arranged in a test circuit, so that the circuit can be conveniently debugged and tested.
In one specific embodiment, the method for identifying the risk of radiation disturbance comprises the following steps:
The radiation induction probe is used for measuring the radiation field intensity of the tested product at different distances and angles, the measurement can be carried out under far field or near field conditions, and the measuring distance and angle can be determined according to the radiation characteristics of the tested product and the requirements of the test standard.
Connecting a radiation induction probe to a signal analyzer, setting a proper frequency range and a proper resolution bandwidth, and recording radiation field intensity values of a tested product under different frequencies;
and if the radiation field intensity exceeds the limit value specified by the test standard, the radiation disturbance risk of the tested product is indicated.
And carrying out spectrum analysis on the radiation field intensity measurement result to determine the radiation spectrum characteristics of the tested product. The spectrum analysis function of the spectrum analyzer can be used to observe parameters such as frequency distribution, bandwidth, peak value and the like of the radiation signal.
And analyzing the radiation spectrum characteristics, and judging the radiation disturbance source of the tested product. For example, if there is a peak of a particular frequency in the radiation spectrum, it may be a radiation disturbance generated by a certain circuit or element in the product under test.
And according to the analysis result of the radiation disturbance source, adopting corresponding corrective measures to reduce the radiation disturbance risk of the tested product.
In one specific embodiment, the method for identifying the risk of conducting disturbance comprises the following steps:
1) Conduction voltage measurement:
And the conductive voltage measurement can be carried out on conductors such as a power line, a signal line and the like of the tested product by using the conductive induction probe, the measurement can be carried out under different positions and load conditions, and the measurement position and load can be determined according to the conductive characteristics of the tested product and the requirements of the test standard.
Connecting a conduction induction probe to an information analyzer, setting proper measurement parameters, and recording conduction voltage values of a tested product under different frequencies;
Analyzing the conduction voltage measurement result to judge whether the conduction disturbance risk exists in the tested product, and if the conduction voltage exceeds the limit value specified by the test standard, indicating that the conduction disturbance risk exists in the tested product;
2) Conduction current measurement:
the current probe is used for conducting current measurement on conductors such as a power line, a signal line and the like of a tested product, and the current probe can be used for measuring under different positions and load conditions.
Comparing the measured conduction current value with a limit value regulated by a test standard to judge whether the conduction disturbance risk exists in the tested product, and if the conduction current exceeds the limit value, indicating that the conduction disturbance risk exists in the tested product;
The conduction current measurements are analyzed to determine the source of the conduction disturbance of the product under test, which may be, for example, if the conduction current peaks at a certain frequency, a conduction disturbance generated by a certain circuit or element in the product under test.
3) Conduction impedance measurement:
The impedance analyzer is used for conducting impedance measurement on conductors such as a power line and a signal line of a tested product, and can be used for measuring parameters such as resistance, inductance, capacitance and the like of the conductors and analyzing impedance characteristics of the conductors.
A conductive disturbance path of the product under test is determined based on the conductive impedance measurement, for example, if the impedance of the conductor changes at a certain frequency, it may be that a conductive disturbance path exists at that frequency.
And corresponding corrective measures are adopted to reduce the conduction harassment risk of the tested product. For example, the conductive disturbance may be reduced by adding filters, improving grounding, optimizing wiring, and the like.
In one embodiment, the adjustable resistor, inductor and capacitor combination box comprises an adjustable resistor, an inductor and a capacitor.
An adjustable resistor is an electronic component that can change the resistance value. In combination boxes, usually in the form of potentiometers or varistors, the resistance value is changed by rotating a knob or sliding a slide. The adjustable resistor is used for adjusting current and voltage in the circuit and controlling the characteristics of gain, attenuation, frequency response and the like of the circuit.
An inductance is an electronic component capable of storing magnetic field energy. In the combiner box, a coil is generally adopted, and the inductance value is changed by changing the number of turns, the diameter, the length and other parameters of the coil. The inductor has the functions of generating a magnetic field in the circuit, blocking the change of current, filtering, storing energy, oscillating and the like.
A capacitor is an electronic component capable of storing electric field energy. In the combined box, a capacitor is usually adopted, and the capacitance value is changed by changing parameters such as the plate area, the plate distance and the dielectric material of the capacitor. The capacitor is used for storing charges in the circuit and preventing voltage from changing, and has the functions of filtering, coupling, bypass and the like.
The working process and the beneficial effects of the invention are as follows:
According to the invention, the electromagnetic disturbance analysis is carried out on the product in the sample stage of the product by adopting the radiation sensing probe and the conduction sensing probe, so that the accuracy of disturbance risk identification is improved. Firstly, carrying out disturbance risk identification on a detected product through a radiation sensing probe and a conduction sensing probe, sensing disturbance signals through the sensing probe, then transmitting the disturbance signals to a controller through a signal analyzer, comparing the sensed disturbance data with disturbance limit values in a database by the controller, when the risk is found, calculating corresponding filtering parameters by the controller according to disturbance frequency spectrum characteristics, controlling parameters in an adjustable resistor, inductor and capacitor combination box, and then carrying out cyclic test until disturbance risk transmission is relieved. And at the moment, the design of the tested product is adjusted according to the parameters of the final adjustable resistor, inductor and capacitor combination box, so that the tested product is ensured to pass the conduction disturbance test.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more in the limited case. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411597079.0A CN119147839A (en) | 2024-11-11 | 2024-11-11 | Risk identification and control system applied to conduction harassment test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411597079.0A CN119147839A (en) | 2024-11-11 | 2024-11-11 | Risk identification and control system applied to conduction harassment test |
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| CN119147839A true CN119147839A (en) | 2024-12-17 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749539A (en) * | 2012-06-27 | 2012-10-24 | 北京航空航天大学 | Fast electromagnetic compatibility test and diagnosis system with quantization electromagnetic interference |
| CN202837442U (en) * | 2012-10-15 | 2013-03-27 | 浪潮集团有限公司 | Electromagnetic interference (EMI) filter debugging motherboard |
| CN107579719A (en) * | 2017-08-23 | 2018-01-12 | 成都天奥技术发展有限公司 | Fast parameter matches power-supply filter assembly |
| CN110456179A (en) * | 2019-07-10 | 2019-11-15 | 湖南明康中锦医疗科技发展有限公司 | Inhibit device, the method and system of Breathing Suppotion equipment conduction interference |
| CN211086469U (en) * | 2019-10-16 | 2020-07-24 | 西安中科长青医疗科技研究院有限公司 | Network power supply electromagnetic compatibility test rectification device |
| CN113945786A (en) * | 2021-10-11 | 2022-01-18 | 海检检测有限公司 | Automatic optimization device and optimization method for conducted disturbance parameters |
| WO2024109503A1 (en) * | 2022-11-24 | 2024-05-30 | 吴伟 | Electromagnetic interference measurement method and system |
-
2024
- 2024-11-11 CN CN202411597079.0A patent/CN119147839A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749539A (en) * | 2012-06-27 | 2012-10-24 | 北京航空航天大学 | Fast electromagnetic compatibility test and diagnosis system with quantization electromagnetic interference |
| CN202837442U (en) * | 2012-10-15 | 2013-03-27 | 浪潮集团有限公司 | Electromagnetic interference (EMI) filter debugging motherboard |
| CN107579719A (en) * | 2017-08-23 | 2018-01-12 | 成都天奥技术发展有限公司 | Fast parameter matches power-supply filter assembly |
| CN110456179A (en) * | 2019-07-10 | 2019-11-15 | 湖南明康中锦医疗科技发展有限公司 | Inhibit device, the method and system of Breathing Suppotion equipment conduction interference |
| CN211086469U (en) * | 2019-10-16 | 2020-07-24 | 西安中科长青医疗科技研究院有限公司 | Network power supply electromagnetic compatibility test rectification device |
| CN113945786A (en) * | 2021-10-11 | 2022-01-18 | 海检检测有限公司 | Automatic optimization device and optimization method for conducted disturbance parameters |
| WO2024109503A1 (en) * | 2022-11-24 | 2024-05-30 | 吴伟 | Electromagnetic interference measurement method and system |
Non-Patent Citations (1)
| Title |
|---|
| 郑庆川;朱文立;: "电子产品的传导骚扰抑制对策", 电子产品可靠性与环境试验, no. 05, 20 October 2010 (2010-10-20) * |
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