CN216086866U

CN216086866U - Camera module water smoke test equipment

Info

Publication number: CN216086866U
Application number: CN202121848616.6U
Authority: CN
Inventors: 许一可
Original assignee: Zhejiang Sunyu Zhiling Technology Co ltd
Current assignee: Zhejiang Sunyu Zhiling Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-03-18
Anticipated expiration: 2031-08-09

Abstract

The utility model relates to a water mist testing device for a camera module, which comprises an air temperature control device (1), a drainage device (2), a testing device (3) and a backflow device (4) which are sequentially connected to form a closed loop, and further comprises a detection box (5) for performing water mist detection on the camera module in the testing device (3). The utility model replaces the traditional mode of actually loading the module for testing, and can realize the indoor water mist test of the vehicle-mounted camera module.

Description

Camera module water smoke test equipment

Technical Field

The utility model relates to a water mist testing device for a camera module.

Background

Along with artificial intelligence's development and the attention to car driving safety, the equipment requirement of on-vehicle module (camera) constantly promotes. In the prior art, test items of a vehicle-mounted camera (module) generally include tightness, module internal parameters, resolution tests and the like, and generally no water mist test item exists. And if take place the water smoke after on-vehicle module (camera) loading, then can lead to module (camera) formation of image not clear, cause and can't carry out clear shooting to vehicle surrounding environment for module (camera) function weakening or loss. For a camera module installed outside a vehicle, a common water mist testing method is to mount a vehicle-mounted module (camera) on a real vehicle to perform a loading drive test. However, the actual measurement requires a large amount of manpower and material resources, and consumes a lot of resources. Moreover, the actual measurement process also needs to take the change of weather into consideration, thereby bringing great inconvenience to the water mist test.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water mist testing device for a camera module.

In order to achieve the purpose of the utility model, the utility model provides a water mist testing device for a camera module, which comprises an air temperature control device, a drainage device, a testing device and a backflow device which are connected in sequence to form a closed loop, and further comprises a detection box for detecting the water mist of the camera module in the testing device.

According to one aspect of the utility model, the testing device comprises a heating cavity and a testing pipeline positioned in the heating cavity;

the test pipeline is a hose, and telescopic regulators are oppositely arranged on the outer side of the test pipeline;

one end of the telescopic regulator is connected to the inner wall of the heating cavity, and the other end of the telescopic regulator is connected with the test pipeline.

According to one aspect of the utility model, a module placing structure and an anemometer are arranged in the test pipeline.

According to one aspect of the utility model, the module placing structures are arranged close to the drainage device at intervals and can be used for placing the camera module for water mist testing and the camera module for temperature testing;

the wind speed tester is close to the backflow device, and the positions of the wind speed tester and the module placing structure are staggered.

According to one aspect of the utility model, the module placement structures have temperature sensors between them.

According to one aspect of the utility model, the temperature sensors are spaced apart along the direction of the airflow.

According to one aspect of the utility model, the detection box further comprises an illumination structure for providing illumination for water mist detection, wherein the illumination structure is a target or a light source.

According to one aspect of the utility model, the pipe diameter adjusting mechanism comprises a first pipe diameter adjusting device and a second pipe diameter adjusting device.

According to one aspect of the utility model, the drainage device comprises a first drainage pipeline, a drainage generator and a second drainage pipeline which are connected in sequence;

the first drainage pipeline is connected with the air temperature control device, and the second drainage pipeline is connected with the testing device;

the second drainage pipeline is an adjustable pipeline, and the first pipe diameter adjusting device is arranged at one end, connected with the testing device, of the second drainage pipeline.

According to one aspect of the utility model, the backflow device comprises a backflow pipeline, one end of the backflow pipeline is connected with the testing device, and the other end of the backflow pipeline is connected with the air temperature control device;

the section that return line with pipe diameter adjustment mechanism connects is the hose, second pipe diameter adjusting device sets up return line with the one end that testing arrangement connects.

According to one aspect of the utility model, the pipe diameter adjusting device comprises rotary tables which are arranged oppositely, a connecting rod which is positioned between the rotary tables, a sleeve which is sleeved outside the rotary tables and an adjusting mechanism which is used for adjusting the pipe diameter;

arc-shaped grooves are formed in the rotary table and are arranged at intervals along the circumferential direction of the rotary table;

two ends of the connecting rod respectively penetrate through the arc-shaped grooves of the turntables at two sides, and the middle parts of the turntables are provided with avoidance holes for allowing pipelines to penetrate through;

the adjusting mechanism comprises a telescopic connecting piece and an inner cover, the connecting rod penetrates through one end of the telescopic connecting piece, and the other end of the telescopic connecting piece is connected with the inner cover;

the arc-shaped groove on the turntable is used as a track for the connecting rod to move, and two ends of the arc-shaped groove are respectively two farthest and nearest limit positions for the connecting rod to move;

the inner side of the inner cover is connected with the side wall of the pipeline.

According to one aspect of the utility model, the detection box has a built-in computer.

According to the concept of the utility model, the equipment for testing whether the water mist exists or not and the water mist generation condition of the vehicle-mounted camera module indoors is provided, so that a large amount of manpower and material resources can be avoided from being wasted, the testing period of the water mist test can be further shortened, the testing precision of the water mist test can be improved, and a wider testing condition range can be set.

According to one scheme of the utility model, the air temperature control device is matched with the flow guiding and refluxing device, so that the cold air flow subjected to temperature control can be guided to the surface of the tested module, and the water mist test is facilitated.

According to one scheme of the utility model, the drainage device and the backflow device are respectively provided with the pipeline adjusting device, so that the pipe diameters of the drainage pipeline and the backflow pipeline can be adjusted according to needs, the flow velocity and the flow state of air flow flowing through a product to be detected are changed, and the temperature is conveniently controlled.

According to one scheme of the utility model, a telescopic regulator is additionally arranged aiming at the test pipeline, so that the pipe diameter of the middle section of the test pipeline can be regulated, and the air flow flowing through the tested module is in a parallel flowing state.

According to one scheme of the utility model, the outer side of the test pipeline is also provided with a heating cavity, so that the tested module is also accommodated in the heating cavity, the actual environment temperature under the actual vehicle-mounted state can be conveniently simulated through temperature rise, and the test accuracy is improved.

According to one scheme of the utility model, the camera module for the temperature test is additionally arranged, which is the same as the water mist test module, so that the temperature inside and outside the module can be taken as the temperature of the water mist test module.

Drawings

Fig. 1 schematically shows an axonometric view of a water mist testing device of a camera module according to an embodiment of the utility model;

FIG. 2 is a front view schematically showing a water mist testing device of a camera module according to an embodiment of the utility model;

FIG. 3 is a top view schematically illustrating a water mist testing apparatus for a camera module according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a hidden air temperature control device of a water mist testing device of a camera module according to an embodiment of the utility model;

FIG. 5 schematically shows a perspective view of a testing device according to an embodiment of the present invention;

FIG. 6 is a perspective view schematically showing a pipe diameter adjusting apparatus according to an embodiment of the present invention;

FIG. 7 is a view schematically showing the internal structure of a test apparatus according to an embodiment of the present invention;

FIG. 8 schematically shows a cross-sectional view of a test device according to an embodiment of the present invention;

FIG. 9 schematically illustrates a front view of a drainage device according to an embodiment of the present invention;

FIG. 10 schematically illustrates an isometric view of a drainage device according to an embodiment of the present invention;

FIG. 11 schematically illustrates an isometric view of a reflux unit according to an embodiment of the present invention;

FIGS. 12 and 13 are block diagrams schematically illustrating return ducts from two views, respectively, in accordance with an embodiment of the present invention;

figure 14 schematically shows a perspective view of a second pipe diameter adjustment device of an embodiment of the present invention;

fig. 15, 16 and 17 schematically show a configuration diagram of a hidden one-side dial, a configuration diagram of a hidden sleeve, and a complete configuration diagram of a pipe diameter adjusting device according to an embodiment of the present invention, respectively.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.

The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.

Referring to fig. 1 to 4, the water mist testing equipment for the camera module comprises an air temperature control device 1, a drainage device 2, a testing device 3 and a backflow device 4 which are sequentially connected to form a closed loop, and further comprises a detection box 5 for performing water mist detection on the camera module in the testing device 3. Wherein, air temperature control adjusting device 1 cooperates with drainage device 2 and reflux unit 4, through drainage and the backward flow to the air, ensures that the cold air through the control by temperature change can be drained to test product (being surveyed the camera) surface, carries out the water smoke test. For the imaging effect of the camera module, the resolving power of the module containing water mist is reduced, so that the utility model finally adopts a software testing method to test whether the water mist exists or not according to the influence of the water mist generated by the vehicle-mounted camera (module) on the image effect, thereby improving the accuracy of judging whether the water mist exists or not. Therefore, the device provided by the utility model replaces the traditional actual measurement mode of loading, and can be used for detecting water mist indoors. Meanwhile, the test period of the water mist test can be shortened, and a wider test condition range can be set.

Referring to fig. 5 to 8, the testing device 3 of the present invention comprises a heating chamber 31 and a testing pipe 32 located in the heating chamber 31, wherein two ends of the testing pipe 32 are communicated with the flow guiding device 2 and the backflow device 4, so that the temperature-controlled airflow can flow therethrough. The detection box 5 includes an illumination structure 51 for providing illumination for water mist detection and a built-in computer, thereby facilitating a clear view of the detection box 5 under appropriate illumination conditions. In the present invention, the illumination structure 51 may be a target or a light source. From the above, the present invention provides a heating chamber 31, which is made of glass, between the test product and the target/light source. The heating cavity 31 can remove water mist on the glass by heating, thereby avoiding affecting the test result. So, heating cavity 31 can simulate the temperature of on-vehicle camera (module) installation position, simulates the camera installation environment, improves the accuracy with the actual drive test of loading.

In the utility model, a module placing structure 34 and an air speed tester 35 are arranged in the test pipeline 32, and the module placing structures 34 are alternately arranged close to the drainage device 2. In the present embodiment, two module placement structures 34 are provided so that the water mist test camera module and the temperature test camera module can be placed respectively. The wind velocity testers 35 are disposed at intervals near the reflow apparatus 4, and the positions of the wind velocity testers are staggered with the module placement structures 34. The test tube 32 is a flexible tube and is provided with a telescopic regulator 33 on the outside. The telescopic regulator 33 is oppositely arranged, one end of the telescopic regulator is arranged on the inner wall of the heating cavity 31, and the other end of the telescopic regulator is connected with the test pipeline 32. Thus, by adjusting the telescopic adjuster 33, a change in the diameter of the test chamber (i.e., the diameter of the test tube 32) can be achieved. Of course, the change of the cavity diameter refers to the change of the pipe diameter of the middle section of the test pipeline 32, and the front end and the tail end of the test pipeline 32 are relatively fixed. Thus, by changing the diameter of the test duct 32, it is possible to realize a parallel flow state of the air in the process of flowing through the test duct 32, and the plurality of anemometers 35 can test whether the air flows are parallel.

In the present invention, the module placement structures 34 have a plurality of temperature sensors 36 therebetween, and the plurality of temperature sensors 36 are disposed at intervals along the airflow direction. In order to measure the internal temperature of the vehicle-mounted camera (module), the same camera (module) can be manufactured, and the module is the camera module for the temperature test. It may be provided with a built-in temperature sensor so that the temperature inside the module can be tested. The temperature sensor 36 disposed outside the surface of the temperature test camera (module) 01 can measure the outermost temperature. Of course, the above arrangement form of the temperature sensor 36 is not limited, and it may be arranged not only in the outermost (outside 01 plane) or inner (inside 01 plane) region of the camera (module), but also in other regions as necessary. Thus, the temperature measured by the temperature sensor 36 for the camera module for temperature test is equal to the temperature of the corresponding position of the camera module for water mist test. The camera for the temperature test and the camera for the water mist test are separated by a certain distance; and in the equipment test, the quantity of the cameras for temperature test and the cameras for water mist test is not only 2, but also a plurality of cameras can be tested at a time.

Referring to fig. 9 and 10, the drainage device 2 of the present invention includes a first drainage tube 21, a drainage generator 22, and a second drainage tube 23 connected in sequence. The first drainage pipeline 21 is connected with the air temperature control device 1, and the second drainage pipeline 23 is connected with the testing device 3. Therefore, the flow guiding generator 22 guides the refrigerated air from the air temperature control device 1 to the first flow guiding pipeline 21 through the rotation of the fan blade, and guides the air to the second flow guiding pipeline 23 after passing through the flow guiding generator 22. The second diversion duct 23 can change the speed and the flow state of the air flowing through by changing the opening diameter of the tail end and reducing the cross section size of the air.

Referring to fig. 11 to 14, the reflow apparatus 4 of the present invention includes a reflow duct 41 having one end connected to the test apparatus 3 and the other end connected to the air temperature control apparatus 1. The return device 4 can thus lead air into the return line 41. Similarly, the end of the return line 41 that is connected to the test device 3 can also vary the opening diameter, thereby increasing the cross-sectional area of the air passage and varying the speed and flow conditions of the air flow.

Referring to fig. 15 to 17, in order to adjust the pipe diameters of the pipe ends of the second drainage pipe 23 and the return pipe 41, the present invention further provides a pipe diameter adjusting mechanism 6 which comprises a first pipe diameter adjusting device 61 and a second pipe diameter adjusting device 62. Of course, the section of the backflow pipeline 41 connected with the pipe diameter adjusting mechanism 6 is a hose, the second drainage pipeline 23 is an adjustable pipeline, the second pipe diameter adjusting device 62 is arranged at one end of the backflow pipeline 41 connected with the testing device 3, and the first pipe diameter adjusting device 61 is arranged at one end of the second drainage pipeline 23 connected with the testing device 3. In the utility model, the adjusting device is rotated to change the opening size of the pipe end, and the structure is basically the same, but the size is slightly adjusted according to the installation requirement of the equipment. Specifically, the pipe diameter adjusting device comprises two coaxial rotating discs 601, a connecting rod 602 positioned between the rotating discs 601, and a sleeve 605 sleeved outside the rotating discs 601. The turntable 601 is provided with arc-shaped slots 603, and the arc-shaped slots 603 are arranged at equal intervals along the circumferential direction of the turntable 601. The middle of the rotating disc 601 is provided with a relief hole 604 for allowing the pipes (i.e. the second drainage pipe 23 and the return pipe 41) to pass through. Two ends of the connecting rod 602 respectively penetrate through the arc-shaped grooves 603 of the turntables 601 at two sides, and are tangent to the guiding direction of the arc-shaped grooves 603. In order to enable the connecting rod 602 to move along the arc-shaped groove 603 to drive the inner pipeline to realize pipe diameter adjustment, the utility model is also provided with an adjusting mechanism 606. The adjusting mechanism 606 includes a telescopic connector 606a and an inner cover 606b, wherein one end of the telescopic connector 606a has a long hole through which the link 602 passes, and the other end is connected to the inner cover 606 b. The arc-shaped slot 603 on the rotating disc 601 is used as a track for the movement of the connecting rod 602, and two ends of the arc-shaped slot 603 are respectively the two farthest and closest limit positions for the movement of the connecting rod 602. The inner side of the inner cover 606b is connected to the side wall of the pipeline (which may be glued or fixed by structural members), so that the connection rod 602 can be connected to the pipeline after passing through the slot at one end of the telescopic connector 606 a. In this way, by rotating the dial 601, the movement of the link 602 is realized, and the diameter of the circle formed by the link 602 is changed, thereby changing the diameter of the opening of the pipe.

When the device is used for carrying out water mist test, the air temperature control device 1 is firstly built, so that the air in the test cavity can be refrigerated. The right side of the air temperature control device 1 is communicated with the front end of the drainage device 2, the tail end of the drainage device 2 is connected with the left side of the testing device 3, the testing device 3 is equivalently contained in a testing environment, the right side of the testing device 3 is connected with the front end of the backflow device 4, and the tail end of the backflow device 4 is connected back to the air temperature control device 1. After the above equipment scheme is built, the drainage generator 22 in the drainage device 2 is firstly opened, and the wind speed tester 35 is observed by adjusting the rotating speed of the drainage generator 22, the diameter of the pipeline at the tail end of the second drainage pipeline 23, the diameter of the backflow pipeline 41 at the front end of the backflow device 4 and the pipe diameter of the test pipeline 31 in the test device 3 until the set requirement is met. The setting requirements are that the wind speeds measured by the plurality of anemometers 35 are equal and the wind speed measured by the anemometer 35 reaches the set wind speed. When the above requirements are met, the pipe diameter of the tail end of the second drainage pipe 23, the diameter of the return pipe 41 at the front end of the return device 4 and the telescopic adjuster 33 of the test pipe 32 are locked, and the current rotation speed of the drainage generator 22 is recorded. The purpose of setting the plurality of wind speed testers 35 is to ensure that the wind speeds blowing to the camera module for water mist test and the camera module for temperature test are equal by detecting the wind speeds measured by the wind speed testers 35.

Then the temperature of the air temperature control device 1 is set, and the air temperature is waited to reach the set temperature, wherein the set temperature is used for simulating the natural environment temperature used after the standard camera (module) is loaded. And the temperature of the heating cavity 31 in the testing device 3 is set, and the temperature of the heating cavity 31 is waited to reach the set temperature, and the temperature is used for simulating the surrounding environment of the camera (module) where the calibration camera (module) is located after being loaded. The camera module for water mist test and the camera module for temperature test are respectively placed on the corresponding module placing structures 34 in the testing device 3, and it is confirmed that the images can be displayed and lightened, and the temperature of the corresponding module position can be measured.

And adjusting the height of the target in the test environment according to the focusing distance of the camera module for water mist test, and locking the height after adjustment. And (3) turning on a built-in computer at the lower part of the detection box 5, turning on test software to simultaneously light the camera module for the water mist test and the camera module for the temperature test, turning on a test program (simultaneously triggering and starting the current generator 22) and starting the test. Waiting for the software test result, and outputting the water mist, the temperatures of the other positions such as the outside and the inside of the surface of the camera module 01, the wind speed test values of the plurality of wind speed testers 35, the temperature of the heating cavity 31 in the testing device 3, and the temperatures of the two temperature sensors 36 in the testing device 3.

In summary, the temperature range of the natural environment can be covered (-40 ℃ to 85 ℃), and the vehicle-mounted camera/module (namely the camera module for the water mist test) can be tested for the water mist generation condition and the presence or absence of the water mist in places such as a laboratory, so that the actual road test performed after the camera is loaded is replaced, the investment of resources of testing vehicles, testing manpower and the like is saved, and the limitation of the actual weather condition on the test is avoided. In addition, the water mist generation condition and state testing method can be quantized, so that the testing accuracy and the testing precision are improved. Therefore, the utility model provides a foundation for realizing the full detection of the water mist generation of the vehicle-mounted camera, has higher efficiency and can be used as water mist test mass production full detection equipment. After the vehicle-mounted camera/module is tested by the utility model, the problem that the function of the camera is weakened or lost due to water mist and the like caused after loading can be avoided.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a module water smoke test equipment makes a video recording, its characterized in that, including connect gradually air temperature control device (1), drainage device (2), testing arrangement (3) and reflux unit (4) that form closed circuit, still include detection case (5), be used for right module of making a video recording in testing arrangement (3) carries out the water smoke and detects.

2. The water mist test equipment for camera modules according to claim 1, characterized in that the test device (3) comprises a heating chamber (31) and a test conduit (32) in the heating chamber (31);

the test pipeline (32) is a hose, and telescopic regulators (33) are oppositely arranged on the outer side of the test pipeline;

one end of the telescopic regulator (33) is connected to the inner wall of the heating cavity (31), and the other end of the telescopic regulator is connected with the test pipeline (32).

3. The camera module water mist test equipment according to claim 2, characterized in that a module placing structure (34) and an anemometer (35) are arranged in the test duct (32).

4. The water mist test equipment for the camera module group according to claim 3, wherein the module placing structures (34) are arranged close to the drainage device (2) at intervals and can be used for placing the camera module group for the water mist test and the camera module group for the temperature test;

the wind speed tester (35) is close to the backflow device (4) and arranged at intervals, and the positions of the wind speed tester and the module placing structures (34) are staggered.

5. The camera module water mist test apparatus according to claim 3, characterized in that there is a temperature sensor (36) between the module placement structures (34).

6. The camera module water mist test equipment according to claim 5, characterized in that the temperature sensors (36) are arranged at intervals along the air flow direction.

7. The camera module water mist test apparatus according to claim 2, wherein the detection box (5) further comprises an illumination structure (51) for providing illumination for water mist detection, the illumination structure (51) being a target or a light source.

8. The camera module water mist testing equipment according to claim 1, further comprising a pipe diameter adjusting mechanism (6) comprising a first pipe diameter adjusting device (61) and a second pipe diameter adjusting device (62).

9. The water mist testing equipment for the camera module group according to claim 8, wherein the drainage device (2) comprises a first drainage pipeline (21), a drainage generator (22) and a second drainage pipeline (23) which are connected in sequence;

the first drainage pipeline (21) is connected with the air temperature control device (1), and the second drainage pipeline (23) is connected with the testing device (3);

the second drainage pipeline (23) is an adjustable pipeline, and the first pipe diameter adjusting device (61) is arranged at one end, connected with the testing device (3), of the second drainage pipeline (23).

10. The water mist test equipment for the camera module group according to claim 8, wherein the backflow device (4) comprises a backflow pipeline (41), one end of the backflow pipeline is connected with the test device (3), and the other end of the backflow pipeline is connected with the air temperature control device (1);

the section that return line (41) with pipe diameter adjustment mechanism (6) are connected is the hose, second pipe diameter adjusting device (62) set up return line (41) with the one end that testing arrangement (3) are connected.

11. The camera module water mist testing equipment according to claim 8 or 9, wherein the pipe diameter adjusting device comprises oppositely arranged turntables (601), connecting rods (602) positioned between the turntables (601), sleeves (605) sleeved outside the turntables (601) and adjusting mechanisms (606) used for adjusting pipe diameters;

arc-shaped grooves (603) are formed in the rotary table (601), and the arc-shaped grooves (603) are arranged at intervals along the circumferential direction of the rotary table (601);

the two ends of the connecting rod (602) respectively penetrate through the arc-shaped grooves (603) of the rotary discs (601) at the two sides, and the middle parts of the rotary discs (601) are provided with avoidance holes (604) for allowing pipelines to penetrate through;

the adjusting mechanism (606) comprises a telescopic connecting piece (606a) and an inner cover (606b), the connecting rod (602) penetrates through one end of the telescopic connecting piece (606a), and the other end of the telescopic connecting piece (606a) is connected with the inner cover (606 b);

taking the arc-shaped groove (603) on the turntable (601) as a track for the movement of the connecting rod (602), wherein two ends of the arc-shaped groove (603) are respectively two farthest and closest limit positions for the movement of the connecting rod (602);

the inner side of the inner cover (606b) is connected with the side wall of the pipeline.

12. The water mist test equipment for camera modules according to claim 1, characterized in that the detection box (5) has a built-in computer therein.