CN115128316A - Electromagnetic compatibility test system and method for voltage-saving inspection unit - Google Patents
Electromagnetic compatibility test system and method for voltage-saving inspection unit Download PDFInfo
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- CN115128316A CN115128316A CN202210682366.6A CN202210682366A CN115128316A CN 115128316 A CN115128316 A CN 115128316A CN 202210682366 A CN202210682366 A CN 202210682366A CN 115128316 A CN115128316 A CN 115128316A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
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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
- 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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
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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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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Abstract
The invention relates to an electromagnetic compatibility test system and a test method of a voltage-saving inspection unit. The electromagnetic compatibility test system comprises a semi-anechoic chamber for placing a to-be-tested node voltage inspection unit; the low-voltage power supply is used for providing working voltage for the voltage-saving inspection unit; a shielding voltage load as a load for single voltage acquisition; a power supply for supplying power to the shield voltage load; the simulation and monitoring equipment judges whether the function of the to-be-tested voltage-saving inspection unit deviates in the test process; and the test equipment is connected with the test antenna through the wallboard connector, so that the electromagnetic radiation and the immunity of the to-be-tested voltage inspection unit are tested. The invention also provides a method for testing the electromagnetic compatibility of the voltage-saving inspection unit by using the electromagnetic compatibility testing system, which comprises the steps of testing the electromagnetic radiation and the immunity under the working state and testing the electromagnetic immunity under the non-working state. The invention accurately and comprehensively reflects the electromagnetic compatibility characteristic of the voltage-saving inspection unit in the fuel cell stack.
Description
Technical Field
The invention relates to the technical field of fuel cell testing, in particular to an electromagnetic compatibility testing system and a testing method of a voltage-saving inspection unit.
Background
The fuel cell stack is a core component of a fuel cell system, and converts chemical energy into electrical energy through a chemical reaction generated by hydrogen and oxygen. A stack typically consists of tens or even hundreds of fuel cells connected in series on a single sheet. The voltage-saving inspection unit (CVM) is an important component of a fuel cell system stack, and has the main functions of accurately monitoring the voltage of all single cells in the fuel cell stack in real time and analyzing and processing acquired data to ensure that the single cells of the fuel cell stack work normally and reliably. Firstly, the voltage-saving inspection unit needs to diagnose a single battery with abnormal functions in time to maintain the normal operation of the stack system; secondly, the voltage-saving inspection unit needs to ensure reliable operation, and once the component fails, the performance of the whole electric pile is affected, even the fuel cell system fails safely.
In the prior art, most of the electricity-saving inspection units of the fuel cell stack are integrated in the stack, and high-voltage devices such as a high-power DC/DC converter, an air compressor and the like are arranged on the periphery of the stack. Therefore, it is necessary to detect whether the node voltage inspection unit will interfere with the peripheral components and whether the node voltage inspection unit can bear the interference of the peripheral components, so as to ensure that the function or performance of the node voltage inspection unit is not deviated.
The electromagnetic compatibility test method for the relevant parts for the vehicle is a limiting value and a measuring method for protecting a vehicle-mounted receiver mainly according to radio disturbance characteristics of GB/T18655 and 2018 vehicles, ships and internal combustion engines, and SISPR 25: 2016 Vehicles, boards and internal comfort systems, Radio distribution characteristics, Limits and methods of measurement for the protection of on-boards, ISO 11452, and like series of standards. However, since the voltage of the voltage-saving inspection unit is generally integrated in the stack, if the electromagnetic compatibility of the voltage-saving inspection unit is tested by using a stack system-level test method, the test site has extremely high requirements, and needs to be modified, including a new hydrogen supply system, a cooling circulation system, a tail gas/wastewater treatment system and other equipment, so that the test cost is high, the cycle length is long, and whether the modified environment meets the battery compatibility test requirements or not needs to be verified. If the existing electric pile single-level testing method is adopted to test the electromagnetic compatibility of the voltage-saving inspection unit, and because the inspection channels of the voltage-saving inspection unit are more, the single-level testing method is difficult to meet the testing conditions of all single-level voltages, so that the electromagnetic compatibility of the voltage-saving inspection unit cannot be truly reflected in the testing result, and particularly, when the immunity is tested, if the single-level voltage acquisition line is not in accordance with the actual electric pile state and is not connected with all single-level batteries, the working state of the voltage-saving inspection unit cannot be effectively judged.
Disclosure of Invention
The invention aims to provide an electromagnetic compatibility test system and a test method of a voltage-saving inspection unit, so as to accurately and comprehensively reflect the electromagnetic compatibility characteristic of the voltage-saving inspection unit in a fuel cell stack.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an electromagnetic compatibility test system of a voltage-saving inspection unit, comprising:
the semi-anechoic chamber is internally provided with a to-be-detected voltage-saving inspection unit;
the low-voltage power supply is connected with the to-be-tested voltage-saving inspection unit and is used for providing working voltage for the to-be-tested voltage-saving inspection unit;
the shielding voltage load is connected with the to-be-tested power-saving inspection unit and is used as a load for collecting the voltage of the to-be-tested power-saving inspection unit monomer;
the power supply is connected with the shielding voltage load and used for supplying power to the shielding voltage load;
the simulation and monitoring equipment is connected with the to-be-tested power-saving inspection unit and is used for monitoring index parameters of the to-be-tested power-saving inspection unit in real time and judging whether the function indexes of the to-be-tested power-saving inspection unit deviate in the testing process;
and the test equipment is connected with the test antenna through the wallboard connector and is used for realizing the test of the electromagnetic radiation and the noise immunity of the to-be-tested voltage-saving inspection unit.
According to the technical means, the shielding voltage load is arranged in the test system, the power resistors meeting the requirement of the number of the voltage-saving inspection channels are integrated in the shielding voltage load, and the voltage which is input is stepped down step by step to provide voltage which meets the voltage acquisition amplitude of each single voltage acquisition channel, so that the comprehensive working state of voltage acquisition is realized; meanwhile, the load is provided with the shielding metal shell, electromagnetic interference resistance applied from the outside can be effectively shielded, the influence on interference resistance judgment of the section voltage inspection unit caused by interference resistance deviation of the simulated monomer voltage is avoided, and the normal work of the test system in an electromagnetic interference resistance environment is ensured, so that the electromagnetic compatibility of the section voltage inspection unit can be accurately and comprehensively evaluated.
Preferably, the power resistor meeting the number of channels of the to-be-detected voltage-saving inspection unit is integrated in the shielding voltage load, and the voltage input by the power supply is stepped down step by step to provide voltage which accords with the voltage acquisition amplitude of each single voltage acquisition channel of the to-be-detected voltage-saving inspection unit.
Preferably, the shielded voltage load has a shielded metal housing for shielding against externally applied electromagnetic interference.
Through set up shielding metal casing outside shielding voltage load, can effectively shield the electromagnetic interference immunity that the external world applyed, avoid because the interference immunity of simulation monomer voltage is skew to the influence that the interference immunity of festival voltage patrol inspection unit was judged and is caused.
Preferably, the shielding voltage load is arranged in the semi-anechoic chamber to realize voltage division of a power supply.
Preferably, the power supply is a programmable power supply, and the programmable power supply is arranged outside the half-wave darkroom and is connected with the shielding voltage load through a power supply filter 0 and a waveguide tube.
Preferably, the low-voltage power supply is arranged in the semi-anechoic chamber and is connected with the to-be-tested power-saving inspection unit through a low-voltage artificial network.
Preferably, the simulation and monitoring equipment is arranged outside the semi-electric wave darkroom and is connected with the to-be-tested voltage-saving inspection unit through an optical fiber feed-through and a photoelectric conversion communication device.
The invention also provides a method for testing the electromagnetic compatibility of the voltage-saving inspection unit by using the electromagnetic compatibility testing system, which comprises the steps of testing the electromagnetic radiation and the immunity of the voltage-saving inspection unit to be tested in a working state and testing the electromagnetic immunity of the voltage-saving inspection unit to be tested in a non-working state.
Preferably, the electromagnetic radiation and noise immunity test under the working state comprises the following steps:
s1, powering on the to-be-tested voltage-saving inspection unit, connecting the acquisition wire harness of the to-be-tested voltage-saving inspection unit with a shielded voltage load, and monitoring whether the voltage acquisition function of the to-be-tested voltage-saving inspection unit is normal or not through simulation and monitoring equipment;
s2, emitting electromagnetic radiation and carrying out electromagnetic immunity test on the to-be-tested voltage-saving inspection unit through test equipment, and monitoring whether the voltage acquisition function of the to-be-tested voltage-saving inspection unit is normal or not through simulation and monitoring equipment;
and S3, after the test is finished, whether the voltage acquisition function of the voltage-saving inspection unit is normal is confirmed again.
Preferably, the electromagnetic immunity test in the non-working state comprises the following steps:
s1, the to-be-tested power-saving voltage inspection unit is not powered on, and the electromagnetic immunity test is carried out on the to-be-tested power-saving voltage inspection unit through the test equipment;
and S2, after the test is finished, powering on the to-be-tested power-saving voltage inspection unit, connecting the acquisition wiring harness of the to-be-tested power-saving voltage inspection unit with a shielded voltage load, and monitoring whether the voltage acquisition function of the to-be-tested power-saving voltage inspection unit deviates or not through simulation and monitoring equipment.
The invention has the beneficial effects that:
1) the electromagnetic compatibility test system of the fuel cell voltage-saving inspection unit is a single-body level test, the system is based on a shielding voltage load, the comprehensive working state of voltage acquisition is realized, the shielding voltage load meets the requirement of electromagnetic immunity, and the normal work of the test system in the environment of electromagnetic immunity is ensured; in addition, the system is based on a programmable power supply, voltage is divided by shielding a voltage load, the universality of the test system is ensured, the requirement of different manufacturers on voltage-saving voltage acquisition voltage range is met, and the electromagnetic compatibility of the voltage-saving inspection unit can be comprehensively and accurately evaluated;
2) the electromagnetic compatibility test method of the voltage-saving inspection unit of the fuel cell carries out the electromagnetic compatibility test on the voltage-saving inspection unit based on the electromagnetic compatibility method of the low-voltage parts of the automobile, so that a conventional electromagnetic compatibility test site is adopted, and the fuel cell is not required to be reformed in an electromagnetic compatibility semi-anechoic chamber; meanwhile, the system can meet the single-chip voltage acquisition working condition of the actual galvanic pile, can ensure that all voltage acquisition lines of the voltage-saving inspection unit work in real time, meets the requirements of different manufacturers on voltage acquisition ranges, and achieves the purpose of comprehensively evaluating the electromagnetic radiation and electromagnetic immunity performance of the voltage-saving inspection unit;
3) according to the electromagnetic compatibility test method of the voltage-saving inspection unit of the fuel cell, all the monomer voltage acquisition channels work normally when a radiation emission test is carried out, so that the radiation emission performance level of the voltage-saving inspection unit can be reflected to the maximum extent; when the electromagnetic immunity test is carried out, the monomer voltage collected by all the monomer voltage collecting channels is monitored, whether the voltage collecting value of each collecting channel has the phenomenon of function or performance deviation under the external electromagnetic interference environment is judged, and therefore the electromagnetic compatibility test of the voltage saving inspection unit is accurately and effectively realized, and the electromagnetic immunity test device has popularization and application values in the technical field of automobile fuel cell test.
Drawings
FIG. 1 is a schematic diagram of the structure of an electromagnetic compatibility testing system of the voltage-saving inspection unit of the present invention;
fig. 2 is a schematic structural diagram of the shielded voltage load according to the present invention.
Wherein, 1-half anechoic chamber; 2-a to-be-tested voltage-saving inspection unit; 3-a low voltage power supply; 4-shielding voltage load, 41-power resistor, 42-shielding metal shell, 43-connector board; 5-a power supply; 6-simulation and monitoring equipment; 7-test equipment; 8-a wall plate connector; 9-testing the antenna; 10-a power supply filter; 11-a waveguide; 12-low voltage artificial network; 13-fiber feed-through; 14-a photoelectric conversion communication device; a load of 15-50 omega.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure herein, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings and preferred embodiments. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be understood that the preferred embodiments are illustrative of the invention only and are not limiting upon the scope of the invention.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the type, amount and proportion of each component in actual implementation can be changed freely, and the layout of the components can be more complicated.
Example 1
As shown in fig. 1 and 2, an electromagnetic compatibility test system of a voltage-saving inspection unit includes:
the device comprises a semi-anechoic chamber 1, a to-be-tested voltage-saving inspection unit 2, a voltage-saving inspection unit 2 and a voltage-saving inspection unit, wherein the to-be-tested voltage-saving inspection unit 2 is arranged in the semi-anechoic chamber 1 and used for collecting the voltage of a single body;
the low-voltage power supply 3 arranged in the semi-anechoic chamber 1 is connected with the to-be-tested voltage-saving inspection unit 2 through a low-voltage artificial network 12, so that working voltage is provided for the to-be-tested voltage-saving inspection unit 2; the low-voltage power supply 3 is a 12V power supply, the low-voltage artificial network 12 is a pair, and the test port is connected with a 50 Ω load 15 in a non-test state.
The shielding voltage load 4 is arranged in the semi-anechoic chamber 1, is connected with the to-be-tested power-saving inspection unit 2 and is used as a load for collecting the monomer voltage of the to-be-tested power-saving inspection unit 2; the shielding voltage load 4 is used for realizing voltage division of a power supply 5 outside a semi-anechoic chamber, the shielding voltage load 4 can realize the function of simulating the monomer voltage of the to-be-tested voltage-saving inspection unit 2, the power resistors 41 meeting the number of channels of the to-be-tested voltage-saving inspection unit 2 are integrated in the shielding voltage load, the connector board 43 is arranged between the upper layer power resistor 41 and the lower layer power resistor 41, the voltage input by the power supply 5 is stepped down step by step, so that the voltage meeting the monomer voltage acquisition amplitude is provided for each monomer voltage acquisition channel of the to-be-tested voltage-saving inspection unit 2, the requirement of electromagnetic compatibility test can be met by the bottom noise of the semi-anechoic chamber, and the shielding voltage load 4 is provided with a shielding metal shell 42 for shielding electromagnetic interference resistance applied outside;
a power supply 5 disposed outside the semi-anechoic chamber 1, connected to the shielded voltage load 4 through a power filter 10 and a waveguide 11, to supply power to the shielded voltage load 4; the power supply 5 is a programmable power supply to ensure that the bottom noise of the semi-anechoic chamber can meet the requirement of electromagnetic compatibility testing. The programmable power supply is provided with a maximum acquisition voltage amplitude value to provide designated voltage for all the single voltage acquisition signals of the to-be-detected node voltage inspection unit 2;
the simulation and monitoring device 6 arranged outside the semi-anechoic chamber 1 is connected with the to-be-tested power-saving inspection unit 2 through an optical fiber feed-through 13 and a photoelectric conversion communication device 14, so that the background noise of a test environment can meet the requirements of the test environment, the simulation and monitoring device is used for monitoring the index parameters of the to-be-tested power-saving inspection unit 2 in real time and judging whether the function indexes of the to-be-tested power-saving inspection unit 2 deviate in the test process;
and the test equipment 7 is used for realizing the test of the radiation emission and the noise immunity of the to-be-tested voltage-saving inspection unit 2 through the wallboard connector 8 and the test antenna 9.
The electromagnetic compatibility test system in the embodiment is suitable for the electromagnetic compatibility test of the voltage-saving inspection unit of the vehicle fuel cell system. The electromagnetic compatibility test system considers all single voltage acquisition working conditions of the voltage-saving inspection unit, simultaneously considers that the load has the immunity test capability, and realizes electromagnetic compatibility characteristic inspection of the fuel cell voltage-saving inspection unit under the comprehensive working condition.
The electromagnetic compatibility test system in the embodiment adopts a shielding voltage load, the shielding voltage load can realize the function of simulating the monomer voltage, power resistors meeting the number of voltage-saving inspection channels are integrated in the shielding voltage load, and the voltage meeting the monomer voltage acquisition amplitude is provided for each monomer voltage acquisition channel by stepping down the input voltage; meanwhile, the shielding voltage load is provided with the shielding metal shell, so that the electromagnetic interference resistance applied from the outside can be effectively shielded, and the influence on the interference resistance judgment of the voltage-saving inspection unit due to the interference resistance deviation of the simulated monomer voltage is avoided. Therefore, the electromagnetic compatibility test of the comprehensive working condition of the section voltage inspection unit is accurately and effectively realized. Meanwhile, in order to cover the monomer voltage acquisition voltage range of various voltage-saving inspection units on the market and meet the universality of the test system, the power supply of the shielding voltage load is based on a programmable power supply outside a darkroom, the power supply is provided with the maximum acquisition voltage amplitude and is connected to the shielding voltage load through a power supply filter and a waveguide tube, so that specified voltage is provided for all monomer voltage acquisition signals of the voltage-saving inspection units, and the universality of the test system is effectively met.
Example 2
In order to fully evaluate the electromagnetic compatibility characteristics of the voltage saving inspection unit of the fuel cell, the method for testing the electromagnetic compatibility of the voltage saving inspection unit of the vehicle fuel cell system using the electromagnetic compatibility testing system of embodiment 1 includes two states:
the method comprises the following steps that in a first state, electromagnetic radiation and noise immunity of a to-be-tested voltage inspection unit in a working state are tested;
and in the second state, the electromagnetic immunity of the to-be-tested voltage inspection unit in the non-working state is tested.
The test method of the state one comprises the following steps:
s1, before the process of testing the electromagnetic radiation and the electromagnetic immunity, electrifying the to-be-tested power-saving inspection unit, connecting the acquisition wire harness of the to-be-tested power-saving inspection unit with a shielding voltage load, and monitoring whether the voltage acquisition function of the to-be-tested power-saving inspection unit is normal or not through simulation and monitoring equipment;
s2, in the testing process, the testing equipment is used for transmitting electromagnetic radiation to the to-be-tested voltage-saving inspection unit and carrying out electromagnetic immunity testing, and the simulation and monitoring equipment is used for monitoring whether the voltage acquisition function of the to-be-tested voltage-saving inspection unit is normal or not;
s3, after the test is finished, whether the voltage acquisition function of the voltage-saving inspection unit is normal is confirmed again;
the testing method of the state two comprises the following steps:
s1, in the process of testing the immunity (non-working state), the to-be-tested node voltage inspection unit is not electrified, the test wire harness of the to-be-tested node voltage inspection unit is not connected, the whole to-be-tested sample does not work, and the electromagnetic immunity test is carried out on the to-be-tested node voltage inspection unit through the test equipment;
and S2, after the test is finished, powering on the to-be-tested power-saving voltage inspection unit, connecting the acquisition wiring harness of the to-be-tested power-saving voltage inspection unit with a shielded voltage load, and monitoring whether the voltage acquisition function of the to-be-tested power-saving voltage inspection unit deviates or not through simulation and monitoring equipment.
In summary, according to the method for testing the electromagnetic compatibility of the power-saving voltage inspection unit, when the radiation emission test is performed, all the single voltage acquisition channels of the power-saving voltage inspection unit to be tested work normally, so that the radiation emission performance level of the power-saving voltage inspection unit can be reflected to the maximum extent; when the electromagnetic immunity test is carried out, the monomer voltage collected by all the monomer voltage collecting channels is monitored, whether the voltage collecting value of each collecting channel has the phenomenon of function or performance deviation under the external electromagnetic interference environment is judged, and therefore the electromagnetic compatibility test of the node voltage inspection unit is accurately and effectively realized, and the method has popularization and application values in the technical field of fuel cell test.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention.
Claims (10)
1. The utility model provides an electromagnetic compatibility test system of unit is patrolled and examined to economize voltage which characterized in that includes:
the semi-anechoic chamber (1) is used for placing the power-saving inspection unit (2) to be tested;
the low-voltage power supply (3) is used for providing working voltage for the to-be-tested voltage-saving inspection unit (2);
the shielding voltage load (4) is used as a load for collecting the monomer voltage of the to-be-detected voltage-saving inspection unit (2);
a power supply (5) for supplying a shield voltage load (4);
the simulation and monitoring equipment (6) is used for monitoring the index parameters of the to-be-tested voltage-saving inspection unit (2) in real time and judging whether the function indexes of the to-be-tested voltage-saving inspection unit (2) deviate in the testing process;
and the test equipment (7) is connected with the test antenna (9) through the wallboard connector (8) and is used for realizing the test of the electromagnetic radiation and the noise immunity of the to-be-tested voltage inspection unit (2).
2. The electromagnetic compatibility testing system according to claim 1, characterized in that a power resistor (41) meeting the number of channels of the to-be-tested voltage-saving inspection unit (2) is integrated in the shielding voltage load (4), and the voltage input by the power supply (5) is stepped down step by step to provide voltage which accords with the single voltage acquisition amplitude for each single voltage acquisition channel of the to-be-tested voltage-saving inspection unit (2).
3. The emc-compatibility testing system according to claim 2, characterized in that said shielded voltage load (4) has a shielded metal housing (42) for shielding against externally applied emc disturbances.
4. The emc-compatible testing system according to claim 1, characterized in that the shielded voltage load (4) is arranged inside the semi-anechoic chamber (1) achieving a voltage division of the power supply (5).
5. The emc-compatible testing system according to claim 1, characterized in that said power supply (5) is a programmable power supply, which is arranged outside said semi-anechoic chamber (1) and is connected to said shielded voltage load (4) through a power filter (10) and a waveguide (11).
6. The emc compatibility testing system according to claim 1, characterized in that said low voltage power supply (3) is arranged inside said semi-anechoic chamber (1), said low voltage power supply (3) being connected to the voltage saving patrol unit under test (2) through a low voltage artificial network (12).
7. The system according to claim 1, characterized in that the simulation and monitoring device (6) is arranged outside the semi-anechoic chamber (1) and is connected to the voltage-saving inspection unit under test (2) through a fiber-optic feed-through (13) and a photoelectric conversion communication device (14).
8. The method for testing the electromagnetic compatibility of the voltage-saving inspection unit by using the electromagnetic compatibility testing system of any one of claims 1 to 7 is characterized by comprising the steps of testing the electromagnetic radiation and the immunity of the voltage-saving inspection unit to be tested in a working state and testing the electromagnetic immunity of the voltage-saving inspection unit to be tested in a non-working state.
9. The method of claim 8, wherein the electromagnetic radiation and noise immunity test in the operating state comprises the steps of:
s1, powering on the to-be-tested power-saving inspection unit, connecting an acquisition wire harness of the to-be-tested power-saving inspection unit with a shielded voltage load, and monitoring whether the voltage acquisition function of the to-be-tested power-saving inspection unit is normal or not through simulation and monitoring equipment;
s2, emitting electromagnetic radiation and carrying out electromagnetic immunity test on the to-be-tested voltage-saving inspection unit through test equipment, and monitoring whether the voltage acquisition function of the to-be-tested voltage-saving inspection unit is normal or not through simulation and monitoring equipment;
and S3, after the test is finished, whether the voltage acquisition function of the voltage-saving inspection unit is normal is confirmed again.
10. The method of claim 8, wherein the electromagnetic immunity test in the non-operational state comprises the steps of:
s1, the to-be-tested power-saving voltage inspection unit is not powered on, and the electromagnetic immunity test is carried out on the to-be-tested power-saving voltage inspection unit through the test equipment;
and S2, after the test is finished, powering on the to-be-tested power-saving voltage inspection unit, connecting the acquisition wiring harness of the to-be-tested power-saving voltage inspection unit with a shielded voltage load, and monitoring whether the voltage acquisition function of the to-be-tested power-saving voltage inspection unit deviates or not through simulation and monitoring equipment.
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| CN202210682366.6A CN115128316A (en) | 2022-06-16 | 2022-06-16 | Electromagnetic compatibility test system and method for voltage-saving inspection unit |
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| CN202210682366.6A CN115128316A (en) | 2022-06-16 | 2022-06-16 | Electromagnetic compatibility test system and method for voltage-saving inspection unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330850A (en) * | 2023-12-01 | 2024-01-02 | 上海优立检测技术股份有限公司 | Radiation detection method, system, equipment and medium for intelligent mobile terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330850A (en) * | 2023-12-01 | 2024-01-02 | 上海优立检测技术股份有限公司 | Radiation detection method, system, equipment and medium for intelligent mobile terminal |
| CN117330850B (en) * | 2023-12-01 | 2024-03-15 | 上海优立检测技术股份有限公司 | Radiation detection method, system, equipment and medium for intelligent mobile terminal |
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