Headlamp testing device

Abstract

The utility model discloses a headlamp testing device, which comprises a shielding chamber, a headlamp to be tested, a testing power supply, a power line interference generator, an electromagnetic interference device and a brightness testing device, the to-be-tested headlamp, the test power supply and the power line interference generator are all arranged in the shielding chamber, the test power supply is connected with the to-be-tested headlamp through the wire harness, the power line interference generator is connected with the wire harness, and the power line interference generator is used for simulating power supply pulse interference; the electromagnetic interference device is used for simulating external electromagnetic interference to generate interference waves; the brightness testing device is used for detecting the brightness of the to-be-tested headlamp when the to-be-tested headlamp is lightened. The utility model provides a headlamp testing device which not only can test a single interference source, but also can test conditions of various interference sources at the same time. After the test is finished, whether the lamp is damaged can be judged on site through the brightness test system, and the test time is shortened.

Description

Technical Field

[0001] The utility model relates to a testing device for a headlamp and belongs to the field of automobile electronic control. Background Art

[0002] At present, the test of automobile headlights includes the test for radio frequency radiation immunity. The test device is mainly composed of a signal generator, a receiver, and a full radio wave darkroom. The interference signal is transmitted through the antenna. During and after the test, it is necessary to determine whether the equipment performance is damaged.

[0003] Common headlamp test equipment for RF radiation immunity testing can only test one interference signal and cannot add other interference signals at the same time. Currently, there is a lack of relevant test equipment. As a result, the interference source of a single test is single, and there are multiple interference sources in actual situations. After the test is completed, it is necessary to go to a special test site and use test equipment to determine whether the sample performance is damaged, which wastes time. When conducting other tests, it is necessary to rearrange the site and equipment, which wastes time. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a headlamp test device that can test a single interference source and can test multiple interference sources at the same time. After the test is completed, the brightness test system can be used on site to determine whether the lamp is damaged, thereby reducing the test time.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A headlamp testing device comprises a shielding chamber, a headlamp to be tested, a test power supply, a power line interference generator, an electromagnetic interference device and a brightness test device;

[0007] The headlamp to be tested, the test power supply and the power line interference generator are all arranged in a shielded room, the test power supply is connected to the headlamp to be tested through a wiring harness, the power line interference generator is connected to the wiring harness, and the power line interference generator is used to simulate power pulse interference;

[0008] The electromagnetic interference device is used to simulate external electromagnetic interference to generate interference waves;

[0009] The brightness testing device is used to detect the brightness of the headlamp to be tested when it is lit.

[0010] Furthermore, the electromagnetic interference device includes an antenna module and an electromagnetic interference generator, the antenna module is connected to the electromagnetic interference generator, the antenna module is arranged in a shielding room, and the antenna module is used to emit electromagnetic interference waves to the headlamp to be tested.

[0011] Furthermore, the brightness test device includes a brightness test system and a brightness meter, the brightness meter is connected to the brightness test system, and the brightness meter is arranged in a shielding room.

[0012] Furthermore, a conical absorbing material is provided on the inner wall of the shielding room.

[0013] Furthermore, a ground plane is provided in the shielding room, and the headlamp to be tested, the test power supply and the wiring harness are all arranged on the ground plane.

[0014] By adopting the above technical solution, the utility model has the following beneficial effects:

[0015] 1. The utility model can not only test the external electromagnetic radiation interference on the lamp separately, but also can test the power line interference separately, and can also test the brightness, and can also test the electromagnetic radiation interference and the interference along the power line at the same time.

[0016] 2. The utility model can quickly determine whether the headlamp to be tested has performance loss and whether it meets the qualified standards through brightness comparison before and after the test through the brightness test system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural diagram of a headlamp testing device. DETAILED DESCRIPTION

[0018] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0019] like Figure 1 As shown, this embodiment provides a headlamp testing device, which includes a shielding room 1, a headlamp to be tested 2, a test power supply 5, a power line interference generator 4, an electromagnetic interference device and a brightness testing device.

[0020] like Figure 1 As shown, the headlamp 2 to be tested and related test equipment are placed in the shielding room 1 of this embodiment, and a conical absorbing material 11 is provided on the inner wall of the shielding room 1 to prevent external electromagnetic signals from interfering with the internal headlamp test. A ground plane 6 is provided in the shielding room 1, and the headlamp 2 to be tested, the test power supply 5 and the wiring harness 3 are all arranged on the ground plane 6.

[0021] like Figure 1As shown, the test power supply 5 of this embodiment provides power to the headlamp 2 to be tested, provides a 12V DC voltage to the headlamp 2 to be tested, and keeps the headlamp 2 to be tested lit. The headlamp 2 to be tested, the test power supply 5 and the power line interference generator 4 of this embodiment are all arranged in the shielding room 1, the test power supply 5 is connected to the headlamp 2 to be tested through the wiring harness 3, the power line interference generator 4 is connected to the wiring harness 3, and the power line interference generator 4 is used to simulate power pulse interference, so as to test the performance of the headlamp 2 to be tested under power pulse interference.

[0022] like Figure 1 As shown, the electromagnetic interference device of this embodiment is used to simulate external electromagnetic interference to generate interference waves. The electromagnetic interference device includes an antenna module 7 and an electromagnetic interference generator 8. The antenna module 7 is connected to the electromagnetic interference generator 8. The antenna module 7 is arranged in the shielding room 1. The antenna module 7 is used to transmit electromagnetic interference waves to the headlamp 2 to be tested. The electromagnetic interference generator 8 is a device for generating electromagnetic interference. The electromagnetic interference generator 8 can simulate external electromagnetic interference to generate interference waveforms, which are emitted by the movable antenna module 7 to generate electromagnetic interference to the headlamp 2 to be tested. The distance between the antenna module 7 and the lamp is adjustable. It can be detected whether the headlamp 2 to be tested can work normally under the condition of electromagnetic interference.

[0023] like Figure 1 As shown, the brightness test device of this embodiment is used to detect the brightness of the headlamp 2 to be tested when it is illuminated. The brightness test device includes a brightness test system 9 and a brightness meter 10. The brightness meter 10 is connected to the brightness test system 9 and is arranged in the shielding room 1. The brightness meter 10 is an instrument for testing brightness. It can test the brightness of the lamp when it is illuminated. To test whether the brightness is qualified, the illumination value of the headlamp 2 to be tested must reach 1001x. The distance between the brightness meter 10 and the headlamp 2 to be tested is adjustable. The brightness data of the headlamp 2 to be tested can be stored by the brightness test system 9. The brightness test system 9 displays and stores the brightness curves at different positions. It is also possible to judge whether the performance of the headlamp 2 to be tested is impaired by comparing the brightness data of the headlamp 2 to be tested before and after the test.

[0024] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A headlamp testing device, characterized in that: It comprises a shielding room (1), a headlamp to be tested (2), a test power supply (5), a power line interference generator (4), an electromagnetic interference device and a brightness test device; The headlamp to be tested (2), the test power supply (5) and the power line interference generator (4) are all arranged in a shielded room (1); the test power supply (5) is connected to the headlamp to be tested (2) via a wiring harness (3); the power line interference generator (4) is connected to the wiring harness (3); and the power line interference generator (4) is used to simulate power pulse interference; The electromagnetic interference device is used to simulate external electromagnetic interference to generate interference waves; The brightness testing device is used to detect the brightness of the headlamp (2) to be tested when it is lit.

2. The headlamp testing device according to claim 1, characterized in that: The electromagnetic interference device comprises an antenna module (7) and an electromagnetic interference generator (8), the antenna module (7) being connected to the electromagnetic interference generator (8), the antenna module (7) being arranged in a shielding room (1), and the antenna module (7) being used to emit electromagnetic interference waves to the headlamp (2) to be tested.

3. The headlamp testing device according to claim 1, characterized in that: The brightness test device comprises a brightness test system (9) and a brightness meter (10); the brightness meter (10) is connected to the brightness test system (9); and the brightness meter (10) is arranged in a shielding room (1).

4. The headlamp testing device according to claim 1, characterized in that: A conical wave-absorbing material is provided on the inner wall of the shielding room (1).

5. The headlamp testing device according to claim 1, characterized in that: A ground plane (6) is provided in the shielding room (1), and the headlamp to be tested (2), the test power supply (5) and the wiring harness (3) are all arranged on the ground plane (6).

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