CN210639231U - Special test system for electromagnetic compatibility of automobile electronic product - Google Patents
Special test system for electromagnetic compatibility of automobile electronic product Download PDFInfo
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- CN210639231U CN210639231U CN201921125978.5U CN201921125978U CN210639231U CN 210639231 U CN210639231 U CN 210639231U CN 201921125978 U CN201921125978 U CN 201921125978U CN 210639231 U CN210639231 U CN 210639231U
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Abstract
The utility model provides a special test system of automotive electronics product electromagnetic compatibility, include: the device comprises an electromagnetic compatibility test chamber, a placing table, tested equipment, an anti-interference simulator and a test antenna, wherein the placing table, the tested equipment, the anti-interference simulator and the test antenna are arranged in the electromagnetic compatibility test chamber; the computer processing system is arranged outside the electromagnetic compatibility testing chamber; and a spectrum analyzer; the placing table is provided with a tested device; the anti-interference simulator is respectively connected with the computer processing system and the tested equipment; the test antenna is respectively connected with the tested equipment and the spectrum analyzer, and is used for converting the tested field intensity generated by the tested equipment in the electromagnetic compatibility test chamber into voltage and transmitting the voltage to the spectrum analyzer for performing an electromagnetic compatibility test on the tested equipment and determining the reliability of the tested equipment.
Description
Technical Field
The utility model relates to an electromagnetic compatibility technical field, in particular to special test system of automotive electronics product electromagnetic compatibility.
Background
Electromagnetic Compatibility (EMC) refers to the ability of a device or system to perform satisfactorily in its Electromagnetic environment without generating intolerable Electromagnetic interference to any device in its environment. With the increasing of automobile electronic products, while the economy, safety and comfort of the automobile are increased, the reliability of the automobile electronic products also needs to be ensured, that is, the electromagnetic compatibility problem of the automobile electronic products needs to be tested, so that it is very important to design a system capable of performing the electromagnetic compatibility test on the automobile electronic products.
SUMMERY OF THE UTILITY MODEL
The utility model provides a special test system of automotive electronics product electromagnetic compatibility for carry out the electromagnetic compatibility test to equipment under test, confirm equipment under test's reliability.
The embodiment of the utility model provides a special test system of automotive electronics product electromagnetic compatibility, include: the device comprises an electromagnetic compatibility test chamber, a placing table, tested equipment, an anti-interference simulator and a test antenna, wherein the placing table, the tested equipment, the anti-interference simulator and the test antenna are arranged in the electromagnetic compatibility test chamber; the computer processing system is arranged outside the electromagnetic compatibility testing chamber;
and a spectrum analyzer;
the placing table is provided with a tested device;
the anti-interference simulator is respectively connected with the computer processing system and the tested equipment;
the test antenna is connected with the spectrum analyzer and used for converting the tested field intensity generated by the tested equipment in the electromagnetic compatibility test chamber into voltage and transmitting the voltage to the spectrum analyzer;
wherein, the anti-interference simulator includes: power amplifier, overvoltage protection device;
one end of the power amplifier is connected with the microsecond switch, the pulse generator, the load rejection generator, the high-voltage tester and the input end of the test pulse generator in parallel;
the other end of the power amplifier is connected with the computer processing system;
one end of the overvoltage protection device is respectively connected with the output ends of the microsecond switch, the pulse generator, the load throwing generator, the high-voltage tester and the test pulse generator in parallel;
and the other end of the overvoltage protection device is connected with the tested equipment.
Preferably, the placing table includes: the hydraulic telescopic rod comprises a first fixing plate, a fixing ring, a through hole, a second fixing plate, a screw, a nut, a third fixing plate and a hydraulic telescopic rod;
the first fixing plate is provided with a fixing ring, and the first fixing plate is also provided with through holes penetrating through the first fixing plate, and the through holes are symmetrically arranged on the groove of the first fixing plate;
a second fixing plate is arranged at the bottom of the first fixing plate, and the first fixing plate and the second fixing plate are fixedly connected through screws and nuts;
the screw penetrates through a screw hole in the top of the first fixing plate, the screw cap is connected with the screw, hydraulic telescopic rods are symmetrically arranged at the bottom of the second fixing plate, and a third fixing plate is fixedly arranged at the bottom of each hydraulic telescopic rod;
and the device under test is arranged on the first fixing plate.
Preferably, the test antenna is disposed on a test stand, the test stand including: four supporting rods and a circular frame which are arranged in the vertical direction;
the supporting rod is of a telescopic structure and is movably connected by a plurality of sections of supporting columns through a sliding rail structure, and the plurality of sections of supporting columns are connected through positioning bolts;
the utility model discloses a test antenna, including four vertical direction setting's bracing pieces, be provided with the circular frame on the same horizontal plane that four bracing pieces that vertical direction set up formed, the circular frame is enclosed to close by the quarter long semicircle that a pair of symmetry set up and the quarter short semicircle that a pair of symmetry set up and forms, just the long semicircle with the side junction of short semicircle is provided with the joint mouth, the upper portion of circular frame is provided with test antenna.
Preferably, the device under test comprises: any one or more of a brake system, an automobile bus and a chassis control system in the automobile electronic product.
Preferably, the antenna comprises a near field antenna and a far field antenna,
the near-field antenna is connected with the far-field antenna, and the far-field antenna is connected with the spectrum analyzer; and the near field antenna is used for detecting the detected field intensity generated by the detected equipment in the electromagnetic compatibility testing chamber.
Preferably, the system further comprises: the electromagnetic interference equipment is arranged in the electromagnetic compatibility test chamber and is used for disturbing the tested equipment in the electromagnetic compatibility test chamber;
the monitoring equipment is arranged in the electromagnetic compatibility testing chamber and is used for monitoring the working state of the tested equipment when the tested equipment is disturbed;
the monitoring equipment and the electromagnetic interference equipment are also respectively connected with the computer processing system.
Preferably, the system further comprises: a controller and an alarm device, wherein the alarm device is connected with the controller,
the controller is respectively connected with the spectrum analyzer and the alarm.
Preferably, the coupling plate is made of copper plate or aluminum plate.
Preferably, the method further comprises the following steps: a power supply for supplying power to the electronic device,
the power supply is connected with the computer processing system.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a special test system for electromagnetic compatibility of automotive electronic products in an embodiment of the present invention;
fig. 2 is a schematic structural view of a placing table in the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a test rack according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
The embodiment of the utility model provides a special test system of automotive electronics product electromagnetic compatibility, as shown in FIG. 1, include: the device comprises an electromagnetic compatibility testing chamber, and a placing table 1, a tested device 2, an anti-interference simulator 4 and a testing antenna 5 which are arranged in the electromagnetic compatibility testing chamber; a computer processing system 6 arranged outside the electromagnetic compatibility testing chamber;
and a spectrum analyzer 7;
the placing table 1 is provided with a tested device 2;
the anti-interference simulator 4 is respectively connected with the computer processing system 6 and the tested device 2;
the test antenna 5 is respectively connected with the tested device 2 and the spectrum analyzer 7, and the test antenna 5 is used for converting the tested field intensity generated by the tested device 2 in the electromagnetic compatibility test chamber into voltage and transmitting the voltage to the spectrum analyzer 7;
wherein, the anti-interference simulator 4 includes: power amplifier 41, overvoltage protection 47;
one end of the power amplifier 41 is connected in parallel with the input ends of the microsecond switch 42, the pulse generator 43, the load rejection generator 44, the high-voltage tester 45 and the test pulse generator 46;
the other end of the power amplifier 41 is connected with the computer processing system 6;
one end of the overvoltage protection device 47 is respectively connected in parallel with the output ends of the microsecond switch 42, the pulse generator 43, the load rejection generator 44, the high-voltage tester 45 and the test pulse generator 46;
the other end of the overvoltage protection device 47 is connected to the device under test 2.
Preferably, the device under test comprises: any one or more of a brake system, an automobile bus and a chassis control system in the automobile electronic product.
The working principle of the technical scheme is as follows: the computer processing system controls the anti-interference simulator to carry out omnibearing electromagnetic compatibility test on the tested equipment, electromagnetic wave signals generated by the tested equipment in the test process are transmitted through the test antenna and transmitted to the frequency spectrum signal analyzer, the frequency spectrum signal analyzer analyzes the electromagnetic wave signals, determines the intensity of the electromagnetic waves generated by the tested equipment and determines whether the intensity of the electromagnetic waves meets the national standard, and the overvoltage protection device is arranged to protect the tested equipment from being interfered by external electromagnetic waves, and the load rejection generator is arranged to generate pulse signals; the pulse generator is set for sending test pulses required by the immunity test, and the test pulse generator is set for the immunity test.
The power amplifier may be, for example, an LVA204931-001 power amplifier;
an overvoltage protection device, which may be, for example, a relay protection device;
the microsecond switch, which can be an EDS microsecond switch, can simulate micro-cut-off and load current discharge in an automobile power supply network;
a pulse generator, which may be, for example, a CAR ET14 generator;
a dump load generator, which may be, for example, an LDG generator;
the high voltage tester, which may be an HVT tester, for example, may be used for voltage withstand testing and insulation testing.
The beneficial effects of the above technical scheme are: the method is used for carrying out the electromagnetic compatibility test on the tested device and determining the reliability of the tested device.
The embodiment of the utility model provides a special test system of automotive electronics product electromagnetic compatibility, as shown in FIG. 2, place platform 1 and include: the hydraulic telescopic rod fixing device comprises a first fixing plate 11, a fixing ring 12, a through hole 13, a second fixing plate 14, a screw 15, a nut 16, a third fixing plate 17 and a hydraulic telescopic rod 18;
a fixing ring 12 is arranged on the first fixing plate 11, through holes 13 penetrating through the first fixing plate are further formed in the first fixing plate 11, and the through holes 13 are symmetrically formed in grooves of the first fixing plate 11;
a second fixing plate 14 is arranged at the bottom of the first fixing plate 11, and the first fixing plate 11 and the second fixing plate 14 are fixedly connected through a screw 15 and a nut 16;
the screw 15 penetrates through a screw hole in the top of the first fixing plate 11, the screw cap 16 is connected with the screw 15, the hydraulic telescopic rods 18 are symmetrically arranged at the bottom of the second fixing plate 14, and a third fixing plate 17 is fixedly arranged at the bottom of the hydraulic telescopic rods 18;
and the device under test 2 is arranged on the first fixture plate 11.
The beneficial effects of the above technical scheme are: the height of the first fixing plate is conveniently set through the hydraulic telescopic rod.
The embodiment of the utility model provides a special test system of automotive electronics product electromagnetic compatibility, as shown in FIG. 3, test antenna 5 sets up on the test jig, the test jig includes: four supporting rods 511 and a circular frame 512 which are arranged in the vertical direction;
the support rod 511 is of a telescopic structure, the support rod 511 is movably connected by a plurality of sections of support columns 513, and the sections of support columns 513 are connected by positioning bolts 514;
on the same horizontal plane that the bracing piece 511 that four vertical direction set up formed, be provided with circular frame 512, circular frame 512 is enclosed to close by the quarter long semicircle that a pair of symmetry set up and the quarter short semicircle that a pair of symmetry set up and forms, just long semicircle with the side junction of short semicircle is provided with joint interface 515, the upper portion of circular frame 512 is provided with test antenna 5.
Preferably, the test antenna comprises a near field antenna and a far field antenna,
the near-field antenna is connected with the far-field antenna, and the far-field antenna is connected with the spectrum analyzer; and the near field antenna is used for detecting the detected field intensity generated by the detected equipment in the electromagnetic compatibility testing chamber.
The beneficial effects of the above technical scheme are: through setting up the test jig, be convenient for place the test antenna setting.
The embodiment of the utility model provides a special test system of automotive electronics product electromagnetic compatibility, the system still includes: the electromagnetic interference equipment is arranged in the electromagnetic compatibility test chamber and is used for disturbing the tested equipment in the electromagnetic compatibility test chamber;
the monitoring equipment is arranged in the electromagnetic compatibility testing chamber and is used for monitoring the working state of the tested equipment when the tested equipment is disturbed;
the monitoring equipment and the electromagnetic interference equipment are also respectively connected with the computer processing system.
The working principle of the technical scheme is as follows: in the process of starting the electromagnetic interference equipment to interfere the equipment to be detected, the computer processing system controls the monitoring equipment to monitor the process of the equipment to be detected, and transmits the monitoring result to the computer processing system in real time.
And the electromagnetic interference equipment performs frequency sweep test in a specified frequency band, and simultaneously observes whether the function and the performance of the tested equipment are normal or not, so that the test is quicker.
The monitoring device may be implemented, for example, as a camera.
The beneficial effects of the above technical scheme are: by arranging the monitoring equipment and the computer processing system, the process of the interfered equipment to be detected can be monitored in real time conveniently.
The embodiment of the utility model provides a special test system of automotive electronics product electromagnetic compatibility, the system still includes: a controller and an alarm device, wherein the alarm device is connected with the controller,
the controller is respectively connected with the spectrum analyzer and the alarm.
The working principle of the technical scheme is as follows: when the spectrum analyzer analyzes that the radiation intensity generated by the tested equipment meets the national standard, the controller controls the alarm to execute a first alarm operation;
otherwise, the controller controls the alarm to execute a second alarm operation.
The alarm can be implemented by one or more of light, voice and the like.
The controller may be a separate STM32 chip of the micro control series.
The beneficial effects of the above technical scheme are: the tester is conveniently reminded whether the radiation intensity of the tested equipment meets the national standard.
The embodiment of the utility model provides a special test system of automotive electronics product electromagnetic compatibility still includes: a power supply for supplying power to the electronic device,
the power supply is connected with the computer processing system.
The beneficial effects of the above technical scheme are: through setting up the power, conveniently remind the electric energy to computer processing system, ensure its normal work.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A special test system for electromagnetic compatibility of automotive electronic products is characterized by comprising: the device comprises an electromagnetic compatibility test chamber, a placing table, tested equipment, an anti-interference simulator and a test antenna, wherein the placing table, the tested equipment, the anti-interference simulator and the test antenna are arranged in the electromagnetic compatibility test chamber; the computer processing system is arranged outside the electromagnetic compatibility testing chamber;
and a spectrum analyzer;
the placing table is provided with a tested device;
the anti-interference simulator is respectively connected with the computer processing system and the tested equipment;
the test antenna is respectively connected with the tested equipment and the spectrum analyzer and is used for converting the tested field intensity generated by the tested equipment in the electromagnetic compatibility test chamber into voltage and transmitting the voltage to the spectrum analyzer;
wherein, the anti-interference simulator includes: power amplifier, overvoltage protection device;
one end of the power amplifier is connected with the microsecond switch, the pulse generator, the load rejection generator, the high-voltage tester and the input end of the test pulse generator in parallel;
the other end of the power amplifier is connected with the computer processing system;
one end of the overvoltage protection device is respectively connected with the output ends of the microsecond switch, the pulse generator, the load throwing generator, the high-voltage tester and the test pulse generator in parallel;
and the other end of the overvoltage protection device is connected with the tested equipment.
2. The system of claim 1, wherein the placement table comprises: the hydraulic telescopic rod comprises a first fixing plate, a fixing ring, a through hole, a second fixing plate, a screw, a nut, a third fixing plate and a hydraulic telescopic rod;
the first fixing plate is provided with a fixing ring, and the first fixing plate is also provided with through holes penetrating through the first fixing plate, and the through holes are symmetrically arranged on the groove of the first fixing plate;
a second fixing plate is arranged at the bottom of the first fixing plate, and the first fixing plate and the second fixing plate are fixedly connected through screws and nuts;
the screw penetrates through a screw hole in the top of the first fixing plate, the screw cap is connected with the screw, hydraulic telescopic rods are symmetrically arranged at the bottom of the second fixing plate, and a third fixing plate is fixedly arranged at the bottom of each hydraulic telescopic rod;
and the device under test is arranged on the first fixing plate.
3. The system of claim 1, wherein the test antenna is disposed on a test rack, the test rack comprising: four supporting rods and a circular frame which are arranged in the vertical direction;
the supporting rod is of a telescopic structure and is movably connected by a plurality of sections of supporting columns through a sliding rail structure, and the plurality of sections of supporting columns are connected through positioning bolts;
the utility model discloses a test antenna, including four vertical direction setting's bracing pieces, be provided with the circular frame on the same horizontal plane that four bracing pieces that vertical direction set up formed, the circular frame is enclosed to close by the quarter long semicircle that a pair of symmetry set up and the quarter short semicircle that a pair of symmetry set up and forms, just the long semicircle with the side junction of short semicircle is provided with the joint mouth, the upper portion of circular frame is provided with test antenna.
4. The system of claim 1, wherein the device under test comprises: any one or more of a brake system, an automobile bus and a chassis control system in the automobile electronic product.
5. The system of claim 1, wherein the antennas comprise a near-field antenna and a far-field antenna,
the near-field antenna is connected with the far-field antenna, and the far-field antenna is connected with the spectrum analyzer; and the near field antenna is used for detecting the detected field intensity generated by the detected equipment in the electromagnetic compatibility testing chamber.
6. The system of claim 1, further comprising: the electromagnetic interference equipment is arranged in the electromagnetic compatibility test chamber and is used for disturbing the tested equipment in the electromagnetic compatibility test chamber;
the monitoring equipment is arranged in the electromagnetic compatibility testing chamber and is used for monitoring the working state of the tested equipment when the tested equipment is disturbed;
the monitoring equipment and the electromagnetic interference equipment are also respectively connected with the computer processing system.
7. The system of claim 1, further comprising: a controller and an alarm device, wherein the alarm device is connected with the controller,
the controller is respectively connected with the spectrum analyzer and the alarm.
8. The system of claim 1, further comprising: a power source connected with the computer processing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921125978.5U CN210639231U (en) | 2019-07-17 | 2019-07-17 | Special test system for electromagnetic compatibility of automobile electronic product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921125978.5U CN210639231U (en) | 2019-07-17 | 2019-07-17 | Special test system for electromagnetic compatibility of automobile electronic product |
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| CN210639231U true CN210639231U (en) | 2020-05-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462161A (en) * | 2020-10-19 | 2021-03-09 | 芜湖赛宝机器人产业技术研究院有限公司 | Detection test device suitable for electromagnetic compatibility of industrial robot |
| CN114740291A (en) * | 2022-03-25 | 2022-07-12 | 西安苏试广博环境可靠性实验室有限公司 | Electromagnetic interference test visualization system for electromagnetic compatibility anechoic chamber |
| CN116609599A (en) * | 2023-05-17 | 2023-08-18 | 深圳市通测检测技术有限公司 | Electromagnetic compatibility test device |
-
2019
- 2019-07-17 CN CN201921125978.5U patent/CN210639231U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462161A (en) * | 2020-10-19 | 2021-03-09 | 芜湖赛宝机器人产业技术研究院有限公司 | Detection test device suitable for electromagnetic compatibility of industrial robot |
| CN112462161B (en) * | 2020-10-19 | 2022-05-17 | 芜湖赛宝机器人产业技术研究院有限公司 | Detection test device suitable for electromagnetic compatibility of industrial robot |
| CN114740291A (en) * | 2022-03-25 | 2022-07-12 | 西安苏试广博环境可靠性实验室有限公司 | Electromagnetic interference test visualization system for electromagnetic compatibility anechoic chamber |
| CN116609599A (en) * | 2023-05-17 | 2023-08-18 | 深圳市通测检测技术有限公司 | Electromagnetic compatibility test device |
| CN116609599B (en) * | 2023-05-17 | 2024-04-05 | 深圳市通测检测技术有限公司 | Electromagnetic compatibility test device |
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