CN219676163U - Electromagnetic compatibility detecting system - Google Patents
Electromagnetic compatibility detecting system Download PDFInfo
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- CN219676163U CN219676163U CN202320956410.8U CN202320956410U CN219676163U CN 219676163 U CN219676163 U CN 219676163U CN 202320956410 U CN202320956410 U CN 202320956410U CN 219676163 U CN219676163 U CN 219676163U
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- 238000012360 testing method Methods 0.000 claims abstract description 118
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000005855 radiation Effects 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 230000002159 abnormal effect Effects 0.000 description 1
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- 238000004891 communication Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of equipment detection, in particular to an electromagnetic compatibility detection system which comprises a display control unit, a test environment unit and a test data acquisition unit, wherein the display control unit is used for displaying a test result; the display control unit is respectively and electrically connected with the test unit and the test data acquisition unit; the test environment unit is respectively and electrically connected with the test unit and the test data acquisition unit, in the utility model, the qualified reference value is set through the display control unit, the electromagnetic compatibility test is carried out on the tested equipment in the test environment unit through the test unit, the test curve is acquired through the test data acquisition unit, then the test curve is compared with the qualified reference value through the display control unit, and the electromagnetic compatibility detection can be directly carried out on equipment of the same model in batches only by setting the qualified reference value once, so that the detection period is shortened, and the problem of overlong current electromagnetic compatibility detection period is solved.
Description
Technical Field
The utility model relates to the technical field of equipment detection, in particular to an electromagnetic compatibility detection system.
Background
Electromagnetic compatibility is one of the most critical indexes of modern electronic equipment, and almost all electronic products meet specific electromagnetic compatibility index requirements.
Because the electromagnetic compatibility factors influencing the products are numerous in the manufacturing process of the electronic products, the electromagnetic compatibility consistency of the products is not as stable as other indexes, and thus, the electromagnetic compatibility of individual products is disqualified. For example, a power adapter product manufactured by a company needs to meet the requirements of the RE102 test in GJB 151B. When a user checks and accepts, RE102 tests of certain products are found to be unqualified, so that the batch of products are recalled, and economic and reputation losses are brought to enterprises.
In order to ensure the quality of the electronic product, it is necessary to inspect the electronic product. However, due to the high cost and long period of electromagnetic compatibility test of electronic products, it is impossible to perform electromagnetic compatibility test on all products.
Disclosure of Invention
Therefore, the present utility model is directed to an electromagnetic compatibility detection system, so as to overcome the problems of long detection period and high cost of the existing electromagnetic compatibility detection system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an electromagnetic compatibility detection system, comprising: the system comprises a display control unit, a test environment unit and a test data acquisition unit;
the display control unit is respectively and electrically connected with the test unit and the test data acquisition unit;
the test unit is arranged inside the test environment unit, and the test environment unit is electrically connected with the test unit and the test data acquisition unit respectively.
Further, the system described above further includes: a radio frequency signal conversion unit;
the test environment unit is electrically connected with the display control unit through the radio frequency signal conversion unit.
Further, in the system described above, the test environment unit includes: a low reflection shielding box.
Further, in the system described above, the test unit includes: the device comprises a conduction emission acquisition subunit, a radiation emission acquisition subunit, a filtering simulation subunit and a cable connection subunit.
Further, in the system described above, the display control unit includes: a computer and a controller with embedded software installed.
Further, in the system described above, the test data acquisition unit includes: a spectrum analyzer.
Further, in the system described above, the radio frequency signal conversion unit includes: a radio frequency coaxial switch;
the radio frequency coaxial switch is electrically connected with the display control unit through a radio frequency coaxial cable.
Further, the system described above further comprises a clean power supply;
the purifying power supply is electrically connected with the display control unit, the testing environment unit and the testing data acquisition unit respectively.
The beneficial effects of the utility model are as follows:
the utility model has display control unit, test environment unit and test data acquisition unit; the display control unit is respectively and electrically connected with the test unit and the test data acquisition unit; the test environment unit is respectively and electrically connected with the test unit and the test data acquisition unit, in the utility model, the qualified reference value is set through the display control unit, the electromagnetic compatibility test is carried out on the tested equipment in the test environment unit through the test unit, the test curve is acquired through the test data acquisition unit, then the test curve is compared with the qualified reference value through the display control unit, and the electromagnetic compatibility detection can be directly carried out on equipment of the same model in batches only by setting the qualified reference value once, so that the detection period is shortened, and the problem of overlong current electromagnetic compatibility detection period is solved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of an electromagnetic compatibility detection system according to an embodiment of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.
Because the electromagnetic compatibility factors influencing the products are numerous in the manufacturing process of the electronic products, the electromagnetic compatibility consistency of the products is not as stable as other indexes, and thus, the electromagnetic compatibility of individual products is disqualified. For example, a power adapter product manufactured by a company needs to meet the requirements of the RE102 test in GJB 151B. When a user checks and accepts, RE102 tests of certain products are found to be unqualified, so that the batch of products are recalled, and economic and reputation losses are brought to enterprises.
In order to ensure the quality of the electronic product, it is necessary to inspect the electronic product. However, due to the high cost and long period of electromagnetic compatibility test of electronic products, it is impossible to perform electromagnetic compatibility test on all products.
Therefore, the present utility model is directed to an electromagnetic compatibility detection system, so as to overcome the problems of long detection period and high cost of the existing electromagnetic compatibility detection system.
The utility model provides an electromagnetic compatibility detection system, and fig. 1 is a schematic structural diagram provided by an embodiment of the electromagnetic compatibility detection system. As shown in fig. 1, the system includes:
the system comprises a display control unit 1, a test unit 2, a test environment unit 3 and a test data acquisition unit 4;
the display control unit 1 is electrically connected with the test unit 2 and the test data acquisition unit 4 respectively;
the test unit 1 is arranged inside the test environment unit 3, and the test environment unit 3 is electrically connected with the test unit 2 and the test data acquisition unit 4 respectively.
It can be understood that the display control unit 1 is configured to record a model of a device under test, set a qualified reference value of the device under test, and store the qualified reference value of the model, the test unit 2 is configured to connect the device under test for electromagnetic compatibility test, the test environment unit 3 is configured to provide a corresponding test environment, the test data acquisition unit 4 is configured to receive a test curve of the device under test, send the test curve to the display control unit, and the display control unit 1 is further configured to determine whether the electromagnetic compatibility of the device under test is qualified according to the test curve and the stored qualified reference value; in the embodiment, for the equipment with the same model, only one qualified reference value is required to be set, so that electromagnetic compatibility detection can be directly carried out in batches, the detection period is shortened, and the problems of long detection period and high cost of the existing electromagnetic compatibility are solved.
The display control unit 1 has a comparator, and the comparator compares whether the qualified reference value and the test data are consistent, so as to determine whether the tested device is qualified.
Preferably, the method further comprises: a radio frequency signal conversion unit;
the test unit 2 is electrically connected with the display control unit 1 through the radio frequency signal conversion unit.
Preferably, the radio frequency signal conversion unit includes: a radio frequency coaxial switch;
the radio frequency coaxial switch is electrically connected with the display control unit 1 through a radio frequency coaxial cable.
It is understood that the radio frequency signal conversion unit is configured to simultaneously transmit the electromagnetic compatibility test signal to the at least one device under test by the test unit.
The radio frequency signal conversion unit can be a radio frequency coaxial switch, and the microwave switch is also called a radio frequency switch, so that the conversion function of the microwave signal channel is controlled. An RF (radio frequency) and microwave switch is a device to route signals at high frequencies through the transmission path. Radio frequency and microwave switches are widely used in microwave test systems for signal routing between instruments and devices under test. Combining switches into a switch matrix system, signals from multiple instruments can be routed to a single or multiple devices under test. This allows multiple tests to be performed under the same settings without requiring frequent connection and disconnection. The entire test process can be automated, thereby improving throughput in a mass production environment.
In some alternative embodiments, multiple devices may be tested simultaneously using radio frequency switches, and six devices may be tested simultaneously using filter insertion loss testing.
Preferably, the test unit 2 comprises: the device comprises a conduction emission acquisition subunit, a radiation emission acquisition subunit, a filtering simulation subunit and a cable connection subunit.
It is understood that the conductive emission collection subunit may be an impedance stabilization network for extracting the conductive emission current on the power line of the device under test; the radiation emission acquisition subunit can be a broadband radio frequency receiving antenna and is used for converting the test field intensity of the tested equipment into voltage; the filter simulation subunit can be a filter insertion loss mounting seat and is used for connecting a filter to be tested; the cable connection subunit may be a cable connection interface for connecting a cable under test or a cable assembly under test.
Preferably, the test environment unit 3 comprises: comprising the following steps: a low reflection shielding box.
It will be appreciated that the shield case is a metal body for suppressing radiation interference that is formed of various shapes of shield bodies made of an electrically or magnetically conductive material, and limits electromagnetic energy to a certain spatial range. And processing the conduction and radiation to achieve a device that provides a non-interfering test environment for the wireless communication device under test.
Preferably, the display control unit 1 includes: a computer and a controller with embedded software installed.
It can be understood that the display and control unit 1 can be an upper all-in-one machine, is integrated with the test environment unit 3, is internally provided with embedded software, and is connected with the test unit 2, the test environment unit 3 and the test data acquisition unit 4 through external cables of the controller.
Preferably, the test data acquisition unit 4 comprises: a spectrum analyzer.
It will be appreciated that the test data acquisition unit 4 may be either a spectrum analyzer or an EMI receiver.
Preferably, the device further comprises a purifying power supply;
the purifying power supply is respectively and electrically connected with the display control unit 1, the testing unit 2, the testing environment unit 3 and the testing data acquisition unit 4.
It can be understood that the purifying power supply has high reliability, has the capability of isolating interference, and can well absorb and inhibit various noises and peak voltages of a power grid.
Preferably, the method further comprises: the signal lamp is electrically connected with the display control unit 1.
It will be appreciated that when a failure of the device under test is detected, the display control unit 1 controls the signal lamp to be turned on so as to inform the customer that the device under test is abnormal.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "plurality" means at least two.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (8)
1. An electromagnetic compatibility detection system, comprising: the system comprises a display control unit, a test environment unit and a test data acquisition unit;
the display control unit is respectively and electrically connected with the test unit and the test data acquisition unit;
the test unit is arranged inside the test environment unit, and the test environment unit is electrically connected with the test unit and the test data acquisition unit respectively.
2. The system of claim 1, further comprising: a radio frequency signal conversion unit;
the test environment unit is electrically connected with the display control unit through the radio frequency signal conversion unit.
3. The system of claim 2, wherein the test environment unit comprises: a low reflection shielding box.
4. A system according to claim 3, wherein the test unit comprises: the device comprises a conduction emission acquisition subunit, a radiation emission acquisition subunit, a filtering simulation subunit and a cable connection subunit.
5. The system of claim 1, wherein the display control unit comprises: a computer and a controller with embedded software installed.
6. The system of claim 1, wherein the test data acquisition unit comprises: a spectrum analyzer.
7. The system of claim 2, wherein the radio frequency signal conversion unit comprises: a radio frequency coaxial switch;
the radio frequency coaxial switch is electrically connected with the display control unit through a radio frequency coaxial cable.
8. The system of claim 1, further comprising a clean power source;
the purifying power supply is electrically connected with the display control unit, the testing environment unit and the testing data acquisition unit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320956410.8U CN219676163U (en) | 2023-04-25 | 2023-04-25 | Electromagnetic compatibility detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320956410.8U CN219676163U (en) | 2023-04-25 | 2023-04-25 | Electromagnetic compatibility detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219676163U true CN219676163U (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320956410.8U Active CN219676163U (en) | 2023-04-25 | 2023-04-25 | Electromagnetic compatibility detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219676163U (en) |
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2023
- 2023-04-25 CN CN202320956410.8U patent/CN219676163U/en active Active
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