CN213875883U - Whole car electromagnetic compatibility test system - Google Patents
Whole car electromagnetic compatibility test system Download PDFInfo
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- CN213875883U CN213875883U CN202023104181.2U CN202023104181U CN213875883U CN 213875883 U CN213875883 U CN 213875883U CN 202023104181 U CN202023104181 U CN 202023104181U CN 213875883 U CN213875883 U CN 213875883U
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Abstract
The utility model discloses a whole car electromagnetic compatibility test system, whole car electromagnetic compatibility test system includes: the control panel of the electrical appliance on-off control device is arranged outside the semi-anechoic chamber, the control panel of the electrical appliance on-off control device is electrically connected with the host of the electrical appliance on-off control device through a wire harness, and the control panel of the electrical appliance on-off control device drives the electrical appliance on-off control device host to control the on-off of the vehicle power supply of the vehicle-mounted electrical appliance and the vehicle to be detected. The utility model discloses can operate outside half anechoic chamber, reach the on-vehicle function of cutting off the power supply with electrical apparatus of remote control, can fix a position the requirement of harassing the source fast, improve efficiency of software testing greatly, save the test cost.
Description
Technical Field
The utility model relates to a relevant technical field of electric automobile, especially a whole car electromagnetic compatibility test system.
Background
With the rapid development of new energy automobiles, electric vehicles gradually come into the sight of consumers. Consumers are always concerned about radiation issues for new roles such as electric vehicles. There is a fear that radiation generated from a motor having a power of tens of hundreds of kilowatts on the electric vehicle will have a bad influence on a human body, thereby losing the desire to purchase the electric vehicle.
The radiation problem of consumer interest can be attributed to electromagnetic compatibility (EMC). There are clear legislative requirements for EMC radiation emission internationally or domestically, if the legislative requirements cannot be met, the vehicle cannot be sold. In China, the new energy electric automobile has one more GB/T18387 regulation test requirement than the traditional fuel automobile. Electric vehicles sold in the market are guaranteed multiple times without causing radiation problems that consumers worry about.
Therefore, the EMC regulation item test of the electric vehicle is very important, and the EMC regulation item test also becomes a test which must be completed in the research and development stage of the electric vehicle. One such problem is often encountered in EMC testing of electric vehicles: the radiation test result of the whole vehicle exceeds the requirement of the regulation item limit, but can not determine which part causes the test to be unqualified. The conventional positioning problem means is to position disturbance sources one by pulling out electronic part insurance. Only when a disturbance source is positioned, targeted rectification can be carried out to ensure that an EMC radiation emission test meets the requirements of the regulation. Because the tested vehicle is tested in a darkroom, a tester can only be in a control room. The test is required to be suspended every time the fuse is pulled out, then the test is carried out again after the fuse of a certain electronic part on the whole vehicle is pulled out from the control room to the darkroom. This approach of locating the source of the disturbance by pulling the fuse is not only inefficient, but also wastes testing time and expense.
SUMMERY OF THE UTILITY MODEL
Therefore, a whole vehicle electromagnetic compatibility test system is needed to be provided aiming at the technical problem that the positioning efficiency of the electromagnetic compatibility test disturbance source in the prior art is low.
The utility model provides a whole car electromagnetic compatibility test system, include: the electric power on-off device control panel for the control electric appliance is arranged outside the semi-anechoic chamber, the electric power on-off device control panel for the control electric appliance is electrically connected with the electric power on-off device host for the control electric appliance and is electrically connected with a plurality of vehicle-mounted electric appliances of a detected vehicle arranged in the semi-anechoic chamber, the electric power on-off device control panel for the control electric appliance is electrically connected with the electric power on-off device host for the control electric appliance through a wire harness, and the electric power on-off device control panel for the control electric appliance drives the electric power on-off device host for the control electric appliance to control the on-off of the vehicle power supply of the vehicle-mounted electric appliance and the detected vehicle.
The utility model discloses a whole car electromagnetic compatibility test system provides a but remote control electric motor car with device of electrical apparatus outage, can operate the device outside half anechoic chamber, reaches the on-vehicle function of electrical apparatus outage of remote control. When meeting the EMC regulation test radiation over standard, the requirement of quickly positioning a disturbance source can be met, the test efficiency is greatly improved, and the test cost is saved.
Further, the control panel of the electrical appliance on-off control device comprises a plurality of key switches, a host of the electrical appliance on-off control device is provided with a plurality of controllable switches, each controllable switch is connected in series between the vehicle power supply and a vehicle-mounted electrical appliance, a first switch end of each controllable switch is electrically connected with the vehicle power supply, a second switch end of each controllable switch is electrically connected with the vehicle-mounted electrical appliance, an input end of each key switch is electrically connected with an external power supply, an output end of each key switch is electrically connected with a control end of each controllable switch, and the controllable switches control the on-off of the first switch ends and the second switch ends according to the voltage of the control ends.
The on-off of the vehicle-mounted electrical appliance and the vehicle power supply is controlled through the controllable switch, and the controllable switch is controlled by the key switch outside the half-wave darkroom, so that remote control is realized.
Further, the controllable switch is a relay.
This embodiment passes through the relay and realizes remote control, more convenient and practical.
Furthermore, the control panel for controlling the power-on and power-off device for the electric appliance further comprises a transformer, a rectifier bridge and a voltage stabilizer, wherein the input end of the transformer is electrically connected with an external power supply, and the output end of the transformer is electrically connected with the rectifier bridge, the voltage stabilizer and the input end of the key switch in sequence.
In the embodiment, a transformer, a rectifier bridge and a voltage stabilizer are added, so that stable current output is realized.
Furthermore, the control panel for controlling the power-on and power-off device of the electrical appliance also comprises an indicator which is connected between the output end of the key switch and the control end of the controllable switch in series.
The present embodiment adds an indicator to provide a clearer indication.
Still further, the indicator is a diode.
The embodiment adopts the diode to realize indication, and is more convenient and practical.
And the device further comprises a wall penetrating device arranged on the wall body of the semi-anechoic chamber, one end of the wire harness is electrically connected with the main machine of the power-on and power-off control device of the electric appliance, and the other end of the wire harness penetrates through the wall penetrating device to be electrically connected with the control panel of the power-on and power-off control device of the electric appliance.
This embodiment uses a wall-piercing device to pass the wiring harness out of the anechoic chamber.
Still further, still include the test revolving stage of setting in half radio anechoic chamber.
The embodiment is provided with the test turntable to place the vehicle to be tested, and the direction angle of the vehicle to be tested is adjusted through the test turntable.
Still further, still include the test antenna of setting in half radio anechoic chamber.
The embodiment tests the vehicle to be tested in the semi-anechoic chamber through the test antenna.
The utility model discloses a whole car electromagnetic compatibility test system provides a but remote control electric motor car with device of electrical apparatus outage, can operate the device outside half anechoic chamber, reaches the on-vehicle function of electrical apparatus outage of remote control. When meeting the EMC regulation test radiation over standard, the requirement of quickly positioning a disturbance source can be met, the test efficiency is greatly improved, and the test cost is saved.
Drawings
Fig. 1 is a system schematic diagram of a complete vehicle electromagnetic compatibility testing system according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a control panel of an electrical appliance on-off device according to an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a main unit of the power on/off device for controlling electrical appliances according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a testing method of an electromagnetic compatibility testing system for a whole vehicle according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a testing method of the entire vehicle electromagnetic compatibility testing system according to the preferred embodiment of the present invention.
Description of the labeling:
1-testing the antenna; 2-the vehicle under test; 3-testing the rotary table; 4-semi anechoic chamber; 5-controlling the power on/off device of the electrical appliance; 51-a controllable switch; 6-harness; 7-a wall penetrating device; 8-control panel for controlling the power on/off device of the electrical appliance; 81-key switch; 82-a transformer; 83-a rectifier bridge; 84-a voltage stabilizer; 85-an indicator; 86-resistance.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a system schematic diagram of a complete vehicle electromagnetic compatibility testing system, including: the electric vehicle power-on and power-off control system comprises a semi-anechoic chamber 4, an electric vehicle power-on and power-off control host 5 for controlling electric vehicles and a control panel 8 for controlling the electric vehicle power-on and power-off control panel, wherein the electric vehicle power-on and power-off control host 5 for controlling electric vehicles is arranged in the semi-anechoic chamber 4 and is electrically connected with a plurality of vehicle-mounted electric devices of a vehicle to be tested, which are arranged in the semi-anechoic chamber 4, the electric vehicle power-on and power-off control panel 8 for controlling electric vehicles is arranged outside the semi-anechoic chamber 4, the electric vehicle power-on and power-off control panel 8 for controlling electric vehicles is electrically connected with the electric vehicle power-on and power-off control panel 5 for controlling electric vehicles, and the vehicle-mounted electric devices and the vehicle power supply of the vehicle to be tested are controlled.
Specifically, the electrical appliance on-off control device host 5 is arranged in the semi-anechoic chamber 4 and is electrically connected with a plurality of vehicle-mounted electrical appliances of a tested vehicle arranged in the semi-anechoic chamber 4, the electrical appliance on-off control panel 8 for controlling electrical appliance is arranged outside the semi-anechoic chamber 4, the electrical appliance on-off control panel 8 for controlling electrical appliance can be arranged in a control chamber outside the semi-anechoic chamber 4, the electrical appliance on-off control panel 8 for controlling electrical appliance is electrically connected with the electrical appliance on-off control device host 5 for controlling electrical appliance through a wire harness 6, and therefore the electrical appliance on-off control panel 8 for controlling electrical appliance can be remotely driven outside the semi-anechoic chamber 4 to control the on-off of vehicle power supplies of the vehicle-mounted electrical appliances and the tested vehicle. The main machine 5 for controlling the power-on and power-off device of the electrical appliance and the control panel 8 for controlling the power-on and power-off device of the electrical appliance are connected to form the power-on and power-off device, so that the vehicle-mounted electrical appliance can be remotely controlled to be turned on or off, and the vehicle-mounted electrical appliance generating disturbance can be accurately determined.
The utility model discloses a whole car electromagnetic compatibility test system provides a but remote control electric motor car with device of electrical apparatus outage, can operate the device outside half anechoic chamber, reaches the on-vehicle function of electrical apparatus outage of remote control. When meeting the EMC regulation test radiation over standard, the requirement of quickly positioning a disturbance source can be met, the test efficiency is greatly improved, and the test cost is saved.
As shown in fig. 2 and fig. 3, in one embodiment, the control panel 8 of the electrical apparatus for controlling power on/off of an electrical apparatus includes a plurality of key switches 81, the electrical apparatus for controlling power on/off of an electrical apparatus is provided with a plurality of controllable switches 51 in the host 5, each controllable switch 51 is connected in series between the vehicle power supply and an electrical apparatus on a vehicle, a first switch end of each controllable switch 51 is electrically connected to the vehicle power supply, a second switch end of each controllable switch 51 is electrically connected to the electrical apparatus on the vehicle, an input end of each key switch 81 is electrically connected to an external power supply, an output end of each key switch 81 is electrically connected to a control end of each controllable switch 51, and the controllable switches 51 control on/off of the first switch end and the second switch end according to a voltage at the control end.
The on-off of the vehicle-mounted electrical appliance and the vehicle power supply is controlled through the controllable switch, and the controllable switch is controlled by the key switch outside the half-wave darkroom, so that remote control is realized.
In one embodiment, the controllable switch 51 is a relay.
This embodiment passes through the relay and realizes remote control, more convenient and practical.
In one embodiment, the control panel 8 further includes a transformer 82, a rectifier bridge 83, and a voltage stabilizer 84, an input end of the transformer 82 is electrically connected to an external power source, and an output end of the transformer 82 is electrically connected to the rectifier bridge 83, the voltage stabilizer 84, and an input end of the key switch 81 in sequence.
In the embodiment, a transformer, a rectifier bridge and a voltage stabilizer are added, so that stable current output is realized.
In one embodiment, the control panel 8 for controlling the power-on and power-off of the electrical appliance further comprises an indicator 85 connected in series between the output terminal of the key switch 81 and the control terminal of the controllable switch 51.
The present embodiment adds an indicator to provide a clearer indication.
In one embodiment, the indicator 85 is a diode.
The embodiment adopts the diode to realize indication, and is more convenient and practical.
In one embodiment, the electric wave control device further comprises a wall penetrating device 7 arranged on the wall body of the semi-anechoic chamber 4, one end of the wire harness 6 is electrically connected with the main machine 5 of the electric appliance on-off control device, and the other end of the wire harness penetrates through the wall penetrating device 7 to be electrically connected with the control panel 8 of the electric appliance on-off control device.
This embodiment uses a wall-piercing device to pass the wiring harness out of the anechoic chamber.
In one embodiment, the test turntable 3 is arranged in the semi-anechoic chamber 4.
The embodiment is provided with the test turntable to place the vehicle to be tested, and the direction angle of the vehicle to be tested is adjusted through the test turntable.
In one embodiment, the test antenna 1 is arranged in the semi-anechoic chamber 4.
The embodiment tests the vehicle to be tested in the semi-anechoic chamber through the test antenna.
Fig. 4 shows a method for testing the entire vehicle electromagnetic compatibility testing system according to an embodiment of the present invention, including:
step S401, arranging a tested vehicle 2 in the semi-anechoic chamber 4 of the whole vehicle electromagnetic compatibility test system;
step S402, electrically connecting the power on/off device host 5 of the control electrical appliance with a plurality of vehicle electrical appliances of the tested vehicle 2 respectively;
step S403, driving the electrical appliance on-off control host 5 to control all the vehicle-mounted electrical appliances to be communicated with the vehicle power supply of the tested vehicle through the electrical appliance on-off control panel 8;
step S404, operating the equipment and starting testing;
step S405, if the fact that the whole vehicle disturbance value exceeds a preset threshold value is detected, the control panel 8 of the electric appliance on-off control device drives the main machine 5 of the electric appliance on-off control device to control the vehicle-mounted electric appliances to be sequentially disconnected with a vehicle power supply one by one, and the whole vehicle disturbance value is monitored;
and S406, if the disturbance value of the whole vehicle is lower than the threshold value after one of the vehicle-mounted electrical appliances is disconnected from the vehicle power supply, judging that the vehicle-mounted electrical appliance is a disturbance source.
Specifically, steps S401 to S403 are executed, and the vehicle 2 to be tested is arranged in the semi-anechoic chamber 4 of the complete vehicle electromagnetic compatibility test system, and is connected with the electrical equipment on-off control host 5 and the electrical equipment on-off control panel 8, as shown in fig. 1. Then, step S404 is executed to start the electromagnetic compatibility test. The electromagnetic compatibility test may include: electromagnetic Interference (EMI) tests and Electromagnetic Interference rejection (EMS) tests. After the test, if the whole vehicle disturbance value is detected to exceed a preset threshold value, a step S405 is triggered, the control panel 8 of the electrical appliance on-off control device is used for driving the electrical appliance on-off control device to control all the vehicle-mounted electrical appliances to be sequentially disconnected with the vehicle power supply one by one, and the whole vehicle disturbance value is monitored when one vehicle-mounted electrical appliance is disconnected. And if the complete vehicle disturbance value is lower than the threshold value after one of the vehicle-mounted electrical appliances is disconnected from the vehicle power supply, triggering a step S406 to judge that the disconnected vehicle-mounted electrical appliance is a disturbance source.
The utility model discloses a whole car electromagnetic compatibility test system provides a but remote control electric motor car with device of electrical apparatus outage, can operate the device outside half anechoic chamber, reaches the on-vehicle function of electrical apparatus outage of remote control. When meeting the EMC regulation test radiation over standard, the requirement of quickly positioning a disturbance source can be met, the test efficiency is greatly improved, and the test cost is saved.
As the utility model discloses the best embodiment, a whole car electromagnetic compatibility test system, include: the system comprises a semi-anechoic chamber 4, a main machine 5 for controlling the on-off of an electric appliance, a wall penetrating device 7 arranged on the wall body of the semi-anechoic chamber 4, a testing rotary table 3 arranged in the semi-anechoic chamber 4, a testing antenna 1 arranged in the semi-anechoic chamber 4 and a control panel 8 for controlling the on-off of the electric appliance, wherein the main machine 5 for controlling the on-off of the electric appliance is arranged in the semi-anechoic chamber 4 and is electrically connected with a plurality of vehicle-mounted electric appliances of a tested vehicle arranged in the semi-anechoic chamber 4, the control panel 8 for controlling the on-off of the electric appliance is arranged outside the semi-anechoic chamber 4, the control panel 8 for controlling the on-off of the electric appliance is electrically connected with the main machine 5 for controlling the on-off of the electric appliance through a wire harness 6, one end of the wire harness 6 is electrically connected with the main machine 5 for controlling the on-off of the electric appliance, and the other end of the wire penetrates through the wall penetrating device 7 and is electrically connected with the control panel 8 for controlling the on-off of the electric appliance, the control panel 8 of the electrical appliance on-off control device drives the electrical appliance on-off control device host 5 to control the on-off of the vehicle power supply of the vehicle-mounted electrical appliance and the vehicle to be tested;
the control panel 8 of the electrical equipment switching device for controlling electrical equipment comprises a plurality of key switches 81, the host 5 of the electrical equipment switching device for controlling electrical equipment is provided with a plurality of controllable switches 51, each controllable switch 51 is connected in series between the vehicle power supply and a vehicle-mounted electrical equipment, a first switch end of each controllable switch 51 is electrically connected with the vehicle power supply, a second switch end of each controllable switch 51 is electrically connected with the vehicle-mounted electrical equipment, an input end of each key switch 81 is electrically connected with an external power supply, an output end of each key switch 81 is electrically connected with a control end of each controllable switch 51, the controllable switches 51 control the on-off of the first switch end and the second switch end according to the voltage of the control ends, and each controllable switch 51 is a relay;
the control panel 8 for controlling the power on/off device for the electrical appliance further comprises a transformer 82, a rectifier bridge 83, a voltage stabilizer 84 and an indicator 85 connected in series between the output end of the key switch 81 and the control end of the controllable switch 51, the input end of the transformer 82 is electrically connected with an external power supply, the output end of the transformer 82 is sequentially electrically connected with the rectifier bridge 83, the voltage stabilizer 84 and the input end of the key switch 81, and the indicator 85 is a diode.
During testing, the vehicle 2 to be tested is placed on a testing turntable 3 of a semi-anechoic chamber 4 and is fixed by a fixing rope, and the layout is shown in figure 1. The test antenna 1 is placed at a distance from the vehicle 2 under test. The main machine 5 for controlling the on-off of the electric appliance is connected into the low-voltage power supply system of the whole vehicle in series, namely one end of the main machine 5 for controlling the on-off of the electric appliance is connected with the low-voltage power supply of the whole vehicle, and the other end is connected with the power supply ends of all low-voltage electric appliances of the whole vehicle;
one end of a host wire harness 6 is connected with a host 5 for controlling the power-on and power-off device of the electrical equipment, and the other end of the host wire harness is connected into a control room outside a dark room through a wall penetrating device 7 and is connected with a control panel 8 for controlling the power-on and power-off device of the electrical equipment, and the effect of controlling the power-off of the electrical equipment on the vehicle is realized through operating and controlling the control panel 8 for the power-on and power-off device of the electrical equipment.
As shown in fig. 2 and 3, the operation principle of the main unit 5 and the control panel 8 for controlling the power-on/off device of the electrical appliance is as follows:
converting 220V alternating current into 12V alternating current through a transformer 82, and outputting the 12V alternating current to a rectifier bridge 83;
converting 12V AC into 12V DC through a rectifier bridge 83, and outputting to a voltage stabilizer 84;
the stabilized 12V voltage is output through a resistor 86 by a regulator 84.
The key switch 81 includes a plurality of keys K1, K2, K3 … …, Kn corresponding to output signals Ctr1, Ctr2, Ctr3, … …, Ctrn. The controllable switch 51 includes a plurality of relays, i.e., relays a1, a2, a3, … …, an, and Electronic Control Units (ECUs) that Control different vehicle-mounted electrical appliances, such as ECU1, ECU2, ECU3, … …, and ECUn, respectively.
Under normal conditions, because the key switch 81 is a normally closed switch, the light emitting diode 85 is lighted, the control panel 8 for controlling the power-on and power-off device of the electrical appliance outputs a control signal to the host 5 for controlling the power-on and power-off device of the electrical appliance, and the vehicle-mounted electrical appliance normally works and is not in a power-off mode.
And when the EMC test exceeds the standard. For example, by pressing the K1 normally closed switch, the corresponding light emitting diode 85 is turned off, and the Ctr1 signal output by the control panel 8 for controlling the electrical appliance power-on and power-off device to the main machine 5 for controlling the electrical appliance power-on and power-off device is turned off. The Ctr1 control signal can control the contact of the a1 relay to be closed and opened, when the Ctr1 control signal is opened, the contact of the relay is opened, and the ECU of the vehicle-mounted electrical appliance is also disconnected with the vehicle power supply Battery. And pressing the corresponding normally closed switch K1 again, and electrifying the vehicle-mounted electrical appliance for normal work again.
In conclusion, when the EMC test of the whole vehicle is realized through the steps, the function of controlling the on-board and off-board of the tested vehicle-mounted electrical appliance in the darkroom in the control room is realized through the power on-off device.
As shown in fig. 5, the working procedure of the testing method of the entire vehicle electromagnetic compatibility testing system according to the preferred embodiment of the present invention includes:
step S501, arranging the whole vehicle;
step S502, operating the equipment and starting testing;
step S503, judging whether the disturbance value of the whole vehicle exceeds the standard, if so, executing step S504, otherwise, finishing the test;
and step S504, operating and controlling the panel of the power-on and power-off device of the vehicle-mounted electrical appliances in the control room, disconnecting one of the vehicle-mounted electrical appliances, and executing step S503 again.
After one vehicle-mounted electric appliance is disconnected, if the disturbance value of the whole vehicle is lower than a preset threshold value, the vehicle-mounted electric appliance can be judged as a disturbance source at the moment, and follow-up improvement measures are executed.
Compared with the prior art, when the disturbance value of the whole vehicle exceeds the standard, the experiment needs to be suspended, the vehicle enters the darkroom, the low-voltage electrical appliance safety of the vehicle is pulled out, then the vehicle exits the darkroom, enters the control room, and then the equipment is operated again to start the test.
Before testing, the testing time is required to be appointed with a laboratory, and if the testing can not be completed in the appointed time, the next testing time is required to be contracted again. And the problem is positioned earlier, and the parts can be trimmed as early as possible. The utility model discloses but remote control break-make electric installation realizes the effect with electrical apparatus outage, need not make a round trip to run between control room and darkroom to save time can realize the effect with electrical apparatus outage on certain car fast, and can not produce extra influence to the test result. Secondly, the utility model discloses can save the test cost. Laboratory test fees are charged on a long-term basis and are expensive. The longer the test investigation time, the higher the test cost. If the harassment source cannot be positioned for a long time, the project development node is also influenced. Finally, when the EMC test of the whole vehicle is carried out, no person operates on the vehicle, and when the vehicle is out of control, the power-off device can also be used for realizing the emergency power-off of the vehicle so as to achieve the purpose of stopping the vehicle.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. The utility model provides a whole car electromagnetic compatibility test system which characterized in that includes: semi-anechoic chamber (4), control are with electrical apparatus on-off electricity device host computer (5) and control are with electrical apparatus on-off electricity device control panel (8), control is with electrical apparatus on-off electricity device host computer (5) setting in semi-anechoic chamber (4) to with setting up a plurality of on-vehicle electrical apparatus electricity that are surveyed the vehicle in semi-anechoic chamber (4) are connected, control is with electrical apparatus on-off electricity device control panel (8) setting outside semi-anechoic chamber (4), control with electrical apparatus on-off electricity device control panel (8) with electrical apparatus on-off electricity device host computer (5) is connected through pencil (6) electricity, electrical apparatus on-off electricity device control panel (8) drive is used in control electrical apparatus on-off electricity device host computer (5) control the on-vehicle is with the break-make of vehicle power of surveyed vehicle.
2. Finished automobile electromagnetic compatibility test system according to claim 1, characterized in that the control panel (8) controlling the on/off of the electrical appliances comprises a plurality of key switches (81), the main machine (5) of the electric device for controlling the on-off of the electric appliance is provided with a plurality of controllable switches (51), each controllable switch (51) is connected in series between the vehicle power supply and a vehicle-mounted electric appliance, and a first switch terminal of each of said controllable switches (51) is electrically connected to said vehicle power supply, the second switch end of the controllable switch (51) is electrically connected with the vehicle-mounted electrical appliance, the input end of the key switch (81) is electrically connected with an external power supply, the output end of the key switch (81) is electrically connected with the control end of the controllable switch (51), the controllable switch (51) controls the on-off of the first switch end and the second switch end according to the voltage of the control end.
3. Finished automobile electromagnetic compatibility test system according to claim 2, characterized in that the controllable switch (51) is a relay.
4. The finished automobile electromagnetic compatibility test system according to claim 2, wherein the control panel (8) of the electric appliance on-off device for controlling further comprises a transformer (82), a rectifier bridge (83) and a voltage stabilizer (84), the input end of the transformer (82) is electrically connected with an external power supply, and the output end of the transformer (82) is electrically connected with the rectifier bridge (83), the voltage stabilizer (84) and the input end of the key switch (81) in sequence.
5. A complete vehicle electromagnetic compatibility test system according to claim 2, characterized in that said control panel (8) controlling the electrical equipment switching device further comprises an indicator (85) connected in series between the output of said key switch (81) and the control of said controllable switch (51).
6. A complete vehicle electromagnetic compatibility test system according to claim 5, characterized in that said indicator (85) is a diode.
7. The finished automobile electromagnetic compatibility test system according to any one of claims 1 to 6, further comprising a wall penetrating device (7) arranged on a wall body of the semi-anechoic chamber (4), wherein one end of the wire harness (6) is electrically connected with the main machine (5) for controlling the power-on and power-off device of the electric appliance, and the other end of the wire harness penetrates through the wall penetrating device (7) to be electrically connected with the control panel (8) for controlling the power-on and power-off device of the electric appliance.
8. The complete vehicle electromagnetic compatibility test system according to any one of claims 1 to 6, characterized by further comprising a test turntable (3) disposed in the semi anechoic chamber (4).
9. The complete vehicle electromagnetic compatibility test system according to any one of claims 1 to 6, characterized by further comprising a test antenna (1) disposed in the semi anechoic chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023104181.2U CN213875883U (en) | 2020-12-21 | 2020-12-21 | Whole car electromagnetic compatibility test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023104181.2U CN213875883U (en) | 2020-12-21 | 2020-12-21 | Whole car electromagnetic compatibility test system |
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| CN213875883U true CN213875883U (en) | 2021-08-03 |
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| CN202023104181.2U Active CN213875883U (en) | 2020-12-21 | 2020-12-21 | Whole car electromagnetic compatibility test system |
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