CN210005217U

CN210005217U - Vehicle headlamp detector capable of detecting LED failure lamp beads

Info

Publication number: CN210005217U
Application number: CN201921171518.6U
Authority: CN
Inventors: 李秋诚; 侯勇; 韩道平; 崔江伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-01-31
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses a vehicle headlamps detector of detectable LED lamp pearl that became invalid, it is main including lamp house, lens, imaging screen, luminous intensity detector and three CCD camera, the front end of lamp house is provided with fresnel lens, CCD camera is fixed in the lamp house, be used for gathering the head-light behind the lens on the imaging screen image, and detect the bias performance of front-lighting light, luminous intensity detector sets up on imaging screen, be used for detecting vehicle headlamps's luminous intensity, still be provided with the second CCD camera that directly carries out image acquisition to vehicle headlamps in the lamp house, be used for detecting LED lamp pearl that became invalid, the utility model discloses a vehicle headlamps detector has realized the detection to vehicle headlamps luminous intensity and the detection of light deflection performance, and can detect out lamp pearl quantity and the lamp pearl position that became invalid in the LED vehicle headlamps simultaneously.

Description

Vehicle headlamp detector capable of detecting LED failure lamp beads

Technical Field

The utility model relates to an kind vehicle headlamps detector, more specifically the vehicle headlamps detector who especially relates to kinds of detectable LED lamp pearls that become invalid.

Background

With the gradual maturity of LED technology, the application of LEDs on automobiles is more and more .A headlamp of the LED is composed of a plurality of light sources, light beams are formed by converging through a light distribution lens, and due to high light intensity, if one of the light sources fails, the failure phenomenon cannot be directly found by naked eyes.

According to the requirements of GB7258-2017, when the performance of the automobile headlamp is detected, light beams of the automobile headlamp need to be irradiated on a screen with a distance of 10m, and the light performance of the treatment is measured.

Disclosure of Invention

The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide detectable LED lamp beads that become invalid's vehicle headlamps detector.

The utility model discloses a vehicle headlamps detector of detectable LED lamp pearl that became invalid, a serial communication port, including lamp house, the imaging screen, luminous intensity detector and CCD camera, the front end of lamp house is provided with the fresnel lens who carries out the focus to the light that vehicle headlamps sent, the imaging screen is located fresnel lens's rear, CCD camera is fixed in the lamp house for gather vehicle headlamps at the imaging image on the imaging screen, luminous intensity detector sets up on the imaging screen, a luminous intensity that shines on it after fresnel lens formation of image for to vehicle headlamps, be provided with vehicle headlamps on the lamp house and carry out image acquisition's second CCD camera.

The utility model discloses a vehicle headlamps detector of detectable LED lamp pearl that became invalid, fresnel lens is convex lens, and the formation of image screen is located fresnel lens's focus position.

The utility model discloses a vehicle headlamps detector of detectable LED inefficacy lamp pearl, carry out the third CCD camera that the position was adjusted well including being used for waiting to detect vehicle headlamps and lamp house, the third CCD camera is fixed in on the lamp house.

The utility model discloses a vehicle headlamps detector of detectable LED lamp pearl that became invalid, the front end of second CCD camera is provided with the light filter of the light part filtering that sends vehicle headlamps.

The utility model discloses a vehicle headlamps detector of detectable LED lamp pearl that became invalid, luminous intensity detector comprises ampere meter, metallic film layer, non-crystal selenium layer, crystallized selenium layer and iron bottom plate, and metallic film layer is towards fresnel lens direction, and non-crystal selenium layer next-door neighbour metallic film layer sets up, and crystallized selenium layer is adjacent with non-crystal selenium layer, and on the iron bottom plate was provided with the surface on crystallized selenium layer, all fixed with the terminal on the surface of metallic film layer and iron bottom plate layer; the binding posts on the metal film layer and the iron bottom plate layer are respectively connected with two binding posts of the ammeter through wires.

The beneficial effects of the utility model are that, the utility model discloses a vehicle headlamps detector, through set gradually fresnel lens to the back by preceding in the lamp house, the imaging screen, luminous intensity detector, utilize fresnel lens to the formation of image of vehicle headlamps, make the light focus that it sent on the imaging screen, then utilize luminous intensity detector to detect vehicle headlamps's luminous intensity, utilize CCD camera to the vehicle headlamps short-distance beam, the formation of image facula image of high beam is shot, realized the detection to vehicle headlamps luminous intensity and light deflection performance effectively, to the collection of vehicle headlamps high beam and short-distance beam formation of image, owing to adopted fresnel lens, the size of headlamp detector has been reduced greatly, needn't accomplish more than 10m with the size of headlamp detector.

Meanwhile, the second CCD camera for collecting images of the automobile headlamp is arranged on the lamp box, and images shot when the automobile headlamp emits light are utilized, so that failed lamp beads in the LED automobile headlamp can be detected, and the phenomenon that the luminous intensity of the automobile headlamp is inaccurate to detect due to failure of the lamp beads is avoided.

Drawings

FIG. 1 is a schematic structural diagram of a vehicle headlamp detector according to the present invention;

FIG. 2 is a schematic diagram of the present invention showing the use of the vehicle headlight detector;

fig. 3 is a schematic structural diagram of the middle luminous intensity detector of the present invention.

In the figure, 1 lamp box, 2 Fresnel lens, 3 imaging screen, 4 luminous intensity detector, 5 th CCD camera, 6 second CCD camera, 7 third CCD camera, 8 automobile headlamp, 9 optical filter, 10 white diffuse reflection screen, 11 ammeter, 12 binding post, 13 metal film layer, 14 amorphous selenium layer, 15 crystalline selenium layer and 16 iron base plate.

Detailed Description

The present invention will be described in further with reference to the following drawings and examples.

As shown in FIG. 1, the utility model discloses a vehicle headlamp detector's structural schematic diagram is given, it is by lamp house 1, Fresnel lens 2, imaging screen 3, luminous intensity detector 4, CCD camera 5, second CCD camera 6 constitutes, lamp house 1 plays fixed and supporting role, the inside of lamp house 1 is horizontal cylindrical cavity, the front end opening of lamp house 1 Fresnel lens 2 sets up in the front end opening position department of lamp house 1, imaging screen 3 sets up in the rear of Fresnel lens 2, be used for imaging to lighted vehicle headlamp 8, luminous intensity detector 4 sets up on imaging screen 3. imaging screen 3 sets up in Fresnel lens 2's focus position, like this, no matter vehicle headlamp 8 sends low beam or distance light, the light that it sent is after Fresnel lens 2 refracts, all can form an image on imaging screen 3, so that luminous intensity detector 4 carries out luminous intensity's detection to the formation of image facula on imaging screen 3.

The CCD camera 5 is arranged on the inner wall of the lamp box 1, the shooting direction of the CCD camera 5 faces the imaging screen 3 and is used for collecting imaging images of the automobile headlamp 8 on the imaging screen 3, and the position deviation of the headlamp can be analyzed through the collected imaging images of the automobile headlamp 8. the second CCD camera 6 is arranged on the lamp box 1, the shooting direction of the second CCD camera 6 faces the direction of the automobile headlamp 8 and is used for collecting images of the automobile headlamp 8. for the images collected by the second CCD camera 6 when the automobile headlamp 8 emits light, under the condition that the headlamp consists of LED lamp beads, whether the LED lamp beads are not lighted can be judged through the identification of the luminescent lamp beads.

According to the detection requirements of the automobile headlamps specified by the national standard, the light emitted by the automobile headlamps 8 needs to be irradiated on the imaging screen 3 at the position of 10m for focus detection, and the size of the required detector is very large, which is not favorable for design and use. The utility model discloses a vehicle headlamps detector utilizes the light that fresnel convex lens sent vehicle headlamps 8 to focus on, makes it carry out the formation of image on the imaging screen 3 that lies in the focus position, has reduced the size of headlamp detector greatly, and the cost is not only reduced has still made things convenient for it to detect vehicle headlamps 8.

As shown in FIG. 2, the utility model discloses a vehicle headlamps detector's use schematic diagram, shown imaging screen 3 is located Fresnel lens 2's focus, like this, no matter vehicle headlamps 8 send short-distance beam or distance beam, all can form images on imaging screen 3, so that CCD camera 5 gathers the image of forming images, shown H is screen image point and lens focus distance, H10 is 10 meters department light offset distance, need set up white diffuse reflection screen 10 in the position department of 10 meters apart from vehicle headlamps according to the requirement of national standard, just so need set up lamp house 1 that 10m is more long, not only area is big, and also inconvenient use.

During the use, need place the lamp house 1 in the dead ahead of luminous vehicle headlamps 8, in order to make things convenient for vehicle headlamps 8 and lamp house 1 to adjust well, the lower part of shown lamp house 1 front end is provided with third CCD camera 7, and the direction of shooing of third CCD camera 7 is towards the place ahead for realize lamp house 1 and vehicle headlamps 8's position and adjust well.

In order to obtain clear spot images of different lamp beads of the LED headlamp and reduce the gray value of the automobile headlamp 8 shot by the second CCD camera 6, the front end of the second CCD camera 6 is provided with the optical filter 9, and the optical filter 9 can filter out part of light rays emitted by the automobile headlamp 8. The distance between adjacent lamp beads and the number of the lamp beads can be obtained through analysis of an imaging result of the LED headlamp lamp beads shot by the second CCD camera 6, and therefore the failure condition of the LED headlamp lamp beads can be obtained through analysis.

Luminous intensity detector 4 is used for detecting the illumination intensity who shines on imaging screen 3, as shown in fig. 3, has given the utility model discloses well luminous intensity detector's schematic structure diagram, shown luminous intensity detector 4 comprises ampere meter 11, metal thin film layer 13, non-crystal selenium layer 14, crystal selenium layer 15 and iron bottom plate 16, and metal thin film layer 13 sets up towards fresnel lens 2, and non-crystal selenium layer 14 and crystal selenium layer 15 set gradually between metal thin film layer 13 and iron bottom plate 16. The outer surfaces of the metal film layer 13 and the iron bottom plate 16 are both fixed with a binding post 12, and the binding post 12 is connected with a binding post of the ammeter 11 through a lead.

The detection principle of the emission intensity detector 4 is as follows: when light is irradiated, electromotive force is generated at the left end and the right end of the metal film layer 13 and the amorphous selenium, the backlight surface is positively charged, and the light receiving surface is negatively charged. Therefore, if the lead wires are installed on the metal film and the iron base plate and connected with the ammeter by the lead wires, current flows through the ammeter to swing the pointer of the ammeter. When the headlight irradiates at a specified distance, a current proportional to the intensity of received light is generated, the pointer of the ammeter is shifted, and the magnitude of the deflection of the pointer can reflect the luminous intensity of the headlight.

Claims

The vehicle headlamp detector capable of detecting the LED failed lamp beads is characterized by comprising a lamp box (1), an imaging screen (3), a luminous intensity detector (4) and a CCD camera (5), wherein a Fresnel lens (2) for focusing light emitted by a vehicle headlamp (8) is arranged at the front end of the lamp box, the imaging screen (3) is located behind the Fresnel lens, the CCD camera is fixed in the lamp box and used for collecting an imaging image of the vehicle headlamp on the imaging screen, the luminous intensity detector is arranged on the imaging screen and used for detecting the luminous intensity of the vehicle headlamp (8) irradiated on the vehicle headlamp after being imaged by the Fresnel lens, and a second CCD camera (6) for collecting the image of the vehicle headlamp (8) is arranged on the lamp box (1).
2. The vehicle headlamp detector capable of detecting LED failed lamp beads according to claim 1, which is characterized in that: the Fresnel lens (2) is a convex lens, and the imaging screen (3) is located on the focus position of the Fresnel lens.
3. The vehicle headlamp detector capable of detecting LED failed lamp beads according to claim 1 or 2, which is characterized in that: the device comprises a third CCD camera (7) which is used for carrying out position alignment on an automobile headlamp (8) to be detected and a lamp box (1), and the third CCD camera is fixed on the lamp box (1).
4. The vehicle headlamp detector capable of detecting LED failed lamp beads according to claim 1 or 2, which is characterized in that: and the front end of the second CCD camera (6) is provided with an optical filter (9) for partially filtering light rays emitted by the automobile headlamp (8).
5. The vehicle headlamp detector capable of detecting LED failed lamp beads according to claim 1 or 2, which is characterized in that: the luminous intensity detector (4) is composed of an ammeter (11), a metal thin film layer (13), an amorphous selenium layer (14), a crystalline selenium layer (15) and an iron bottom plate (16), wherein the metal thin film layer faces the Fresnel lens direction, the amorphous selenium layer is arranged close to the metal thin film layer, the crystalline selenium layer is adjacent to the amorphous selenium layer, the iron bottom plate is arranged on the outer surface of the crystalline selenium layer, and binding posts are fixed on the outer surfaces of the metal thin film layer and the iron bottom plate layer; the binding posts on the metal film layer and the iron bottom plate layer are respectively connected with two binding posts of the ammeter through wires.