CN218217498U - Testing device of vehicle panoramic looking-around system - Google Patents
Testing device of vehicle panoramic looking-around system Download PDFInfo
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- CN218217498U CN218217498U CN202222720896.3U CN202222720896U CN218217498U CN 218217498 U CN218217498 U CN 218217498U CN 202222720896 U CN202222720896 U CN 202222720896U CN 218217498 U CN218217498 U CN 218217498U
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Abstract
The invention provides a testing device of a vehicle panoramic all-round looking system, which comprises: the interior hollow box, a plurality of light source device, look around the camera group, car machine controller, light source controller, at least one power supply unit. The side surfaces and the top surface of the periphery of the interior of the box body are provided with a plurality of light source devices, and a panoramic camera group is placed in the center of the bottom surface of the interior of the box body; control signal connection is established between the plurality of light source devices and the light source controller; establishing data transmission connection between the all-around camera group and the vehicle-mounted machine controller; and the power supply device is electrically connected with the plurality of light source devices, the all-round-looking camera group, the vehicle controller and the light source controller. The invention can provide visual image, simple and convenient arrangement for developing, testing and displaying the vehicle panoramic all-round looking system, can test scenes on line and can traverse potential uneven or variable illumination scenes as far as possible.
Description
Technical Field
The invention relates to the technical field of automatic driving or auxiliary driving, in particular to a test and display method of a vehicle panoramic all-around system applied to automatic driving or auxiliary driving.
Background
The vehicle panoramic looking-around system consists of a plurality of cameras, the change of environmental illumination needs to be overcome, the difference of picture brightness among the cameras is avoided, and the phenomena of picture overexposure, darkness or obvious splicing lines and the like in a synthesized panoramic picture are avoided. Therefore, a means for simulating different illumination is needed in developing, testing and displaying the panoramic all-round viewing system of the vehicle. The common methods are as follows: (1) In the practical application scene of the all-round system, a tester uses an intense light source such as a flashlight and the like to simulate the uneven or changed illumination, and the uneven or changed illumination is stored as a test video for research and development and testing; (2) The tester records the test video under the uniform illumination condition in advance, and then adjusts the brightness of the picture through the image processing technology to simulate different illumination conditions. Both methods have disadvantages: although the former is close to reality, a larger test field is needed to simulate different scenes, the scenes are complicated to arrange and consume time, so that the test frequency is limited, and the development and the display are not facilitated; the latter is direct and convenient, but is difficult to reproduce real scenes, is not favorable for solving practical problems, and is not convenient for displaying products. In addition, neither is suitable for online testing, and offline testing is often performed by recording videos.
Disclosure of Invention
The invention designs an efficient and comprehensive testing device, can provide visual images, is simple and convenient to arrange and can test scenes on line for researching, testing and displaying a vehicle panoramic all-around system, and can traverse potential uneven or variable illumination scenes as far as possible. The specific technical scheme is as follows:
as a first aspect, the present invention provides a test apparatus for a vehicle panoramic looking around system, the apparatus comprising: the interior hollow box, a plurality of light source device, look around camera group, car machine controller, light source controller, at least one power supply unit.
The side and the top surface around the inside of box are provided with a plurality of light source devices, and the center of the bottom surface inside the box is provided with a panoramic camera group.
The all-round looking camera group is formed by surrounding a plurality of wide-angle cameras.
And the signal interfaces of the light source devices which are integrated into a whole are in signal connection with the signal interface of the light source controller through a cable or a wireless transmission device.
And a data transmission connection is established between the data transmission interface of the look-around camera group and the data transmission interface of the vehicle-mounted machine controller through a data line, a network cable or a wireless transmission device.
And the power supply device is in circuit connection with the power supply interfaces of the plurality of light source devices, the around-looking camera group, the vehicle controller and the light source controller. One power supply device may be provided for each device, or one power supply device may be shared.
Preferably, the bottom surface inside the box body is provided with a plurality of light source devices.
Preferably, a vehicle model is placed in the center of the bottom surface of the interior of the box body, and the all-round camera group is mounted on the peripheral side surface or the roof of the vehicle model.
Preferably, the all-round camera group is surrounded by a plurality of 160-200 wide-angle cameras and is formed, and a plurality of wide-angle cameras of the all-round camera group are respectively installed on the front side, the rear side, the left side and the right side of the vehicle model in a surrounding mode.
Preferably, calibration devices are arranged at four corners of the bottom surface in the box body and in the front direction, the rear direction, the left direction and the right direction with the center point of the bottom surface as an axis, and the calibration devices are used as reference objects for parameter correction of the testing device.
Preferably, the calibration device is a calibration cloth with black and white grids alternated.
Preferably, the light source device is an LED lamp and a dimming drive device is provided.
Preferably, the shape of the box body is rectangular, square or dome-shaped.
Preferably, the establishing of the signal connection is configured to establish the signal connection through a cable.
Preferably, the establishing of the data transmission connection is configured to establish the data transmission connection through a data line, a wireless local area network, and a mobile cellular network.
Preferably, the light absorbing material layer is uniformly arranged on each side surface of the inner hollow space of the box body except for the area where the light source device is arranged.
The invention has the beneficial effects that:
(1) A panoramic all-round looking system is built on a vehicle model, and different illumination conditions are simulated through a plurality of light source devices, so that the panoramic all-round looking system is visual and efficient;
(2) The light source devices controlled by the program can adjust the parameters of the lamp group according to rules, automatically traverse potential scenes, meet the requirements of online testing and avoid the risk of imperfect testing caused by limited offline testing videos.
(3) The system can simulate limit light scenes which are difficult to meet in reality as much as possible, so that technicians can adjust related programs according to the existing fusion technology of the panoramic all-around images, the upper and lower limits and the performance of the image fusion of the panoramic all-around system are improved, the balance of the output all-around images is guaranteed, and the uneven brightness of the images is avoided.
Drawings
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 description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a calibration cloth of the present invention;
fig. 3 is a schematic structural diagram of a ground LED group according to the present invention.
Reference numerals: the system comprises a box body 1, a light source device 2, a 3-around view camera group, a vehicle model 4, a vehicle controller 5, a light source controller 6 and a calibration cloth 7.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. It is obvious that the described embodiments are only some of the embodiments of the invention.
Example 1
As shown in fig. 1, the present invention provides a test apparatus for a vehicle panoramic looking-around system, the apparatus comprising:
an internal hollow box 1, such as a rectangle, square or dome shape, for example, a rectangular box is taken as an example in the present embodiment, and the following devices of the test device are placed in the internal hollow space.
The top surface of the inner hollow space is provided with a light source array consisting of a plurality of adjustable LED light source devices 2 and used for simulating a light scene emitted from the top. The side around the inner hollow space is provided with a light source array consisting of a plurality of adjustable LED light source devices 2, and the light source array is used for simulating light scenes emitted from the front direction, the rear direction, the left direction and the right direction. Thereby building a panoramic look-around system on the vehicle model 4.
The vehicle model 4 is placed the central authorities of inside hollow space's bottom surface, and 160 degrees ~ 200 degree wide-angle cameras are installed respectively to four sides in the front of its vehicle model 4, back, left and right, and four wide-angle cameras encircle and constitute look around camera group 3 for shoot the picture of four directions in the front of vehicle model 4, back, left and right and transmit to car machine controller 5 and carry out the integration of panorama picture. In the present embodiment, only 4 wide-angle cameras are taken as an example, but not limited to 4. According to technical requirements or cost considerations, the panoramic camera group 3 of most products in the field is composed of 3 or 4 wide-angle cameras, and also comprises 6 cameras.
The vehicle-mounted controller 5 is used for performing image fusion of overlooking visual angles on the pictures transmitted by the all-round-looking camera group 3 according to a preset program and feeding back the pictures to a user.
The light source controller 6 and the LED light source devices 2 are integrated into an LED lamp bank, parameters of the LED lamp bank are adjusted according to rules according to preset programs, one or more LED light source devices 2 of the lamp bank are adjusted in light, potential scenes are traversed automatically, the requirement of online testing can be met, and the risk of incomplete testing caused by limited offline testing videos is avoided.
As shown in fig. 2, calibration devices are disposed at four corners of the bottom surface inside the box body and in four directions, i.e., front, rear, left and right directions, which use the center point of the bottom surface as an axis. The calibration devices at the four corners are black calibration cloth 7, and the calibration cloth 7 with black and white grids arranged in the front, back, left and right directions is arranged. The calibration cloth 7 is used for large-scale parameter correction and small-scale splicing correction of the panoramic system during calibration, and can well correct the influence of factors such as process on the panoramic effect. The vehicle model 4 and the calibration cloth 7 are reduced in a similar proportion, and the principle of central projection imaging enables the panoramic camera group 3 arranged on the vehicle model 4 and the cameras on the real vehicles to shoot images with similar observation angles and layouts, so that the vehicle model 4 does not influence the use of a panoramic looking-around system.
At least one power supply device for providing power to the test device.
The embodiment can adjust the brightness of the LED lamp groups in batches, and can simulate uneven illumination. The timing of the modulated luminous intensity for the LED lamp set can simulate varying illumination. The programming program can continuously adjust the on-off and the luminous intensity of the LED lamp group, and can traverse and simulate uneven illumination with different degrees and variable illumination with different speeds, thereby forming various light scenes.
The scenarios that the test apparatus can simulate are as follows:
(1) Partial shadow
Only some of the LEDs are lit to simulate daylight, and others are not lit to simulate shadows. When the simulated vehicle runs in the environment of local shadow in summer (the backward direction of the vehicle is defined as the row direction), every time the time interval of delta t passes, the (i + 1) th row of LEDs at the top of the internal space of the box body inherits the light-emitting state of the (i) th row of LED lamps, lights part of the LEDs in the (1) th row, and turns off other LEDs.
(2) In-out tunnel
When entering the tunnel in the daytime, the illumination is weakened from strong; when the tunnel leaves in the daytime, the illumination is changed from weak to strong; when entering the tunnel at night, the illumination is changed from weak to strong; when the tunnel is left at night, the illumination is weakened by the intensity. When a vehicle enters and exits the tunnel (the backward direction of the vehicle is defined as the moving direction), every time interval of delta t passes, the (i + 1) th line of LEDs at the top of the internal space of the box body inherits the light emitting state of the (i) th line of LEDs, and the light emitting intensity of the (1) th line of LEDs is newly generated according to the change rule of illumination when the vehicle enters and exits the tunnel.
(3) Uneven lighting in a basement
The environment in the ground storehouse is dim, and the headlamp and the brake lamp can produce uneven illumination. When the simulated vehicle runs in the ground garage, only the LEDs at the front and the rear of the vehicle corresponding to the top of the simulated vehicle are lighted.
(4) Direct high light at front and back at night
When the vehicle runs at night, if the vehicle comes from the front and directly shines the front headlamp and the rear headlamp, a large number of white blind areas are generated in the pictures of the front camera and the rear camera. When simulating strong light to directly irradiate, the LEDs on the front and back surfaces of the inner side of the inner hollow space are respectively lightened.
(7) Vehicle meeting at night
When meeting at night, the headlights of a vehicle coming from the front or overtaking from the rear form a moving bright spot on one side of the vehicle. When the vehicle is simulated to meet at night (the backward direction of the vehicle is defined as the moving direction), every time the time interval of delta t passes, the (i + 1) th line of LEDs at the top of the internal space of the box body inherits the light-emitting state of the (i) th line of LEDs and newly generates the light-emitting state of the (1) th line of LED lamps, and all the light-emitting LEDs form an ellipse.
Example 2
As shown in fig. 3, on the basis of embodiment 1, a plurality of LED light source devices 2 may be disposed on the bottom surface of the inner hollow space to simulate the effect of reflecting light from the ground, for example, light changes caused by reflection of light around the road when the road surface has water or is smooth, such as self-leveling, and further simulate light changes around the vehicle in real environment.
Example 3
On the basis of embodiment 1, the LED lamp set and the light source controller 6 are both configured with a single chip microcomputer, the two single chip microcomputers establish signal control connection by using signal interfaces of the single chip microcomputers in a PWM (pulse width modulation) control mode, and the signal interfaces of the two single chip microcomputers are generally connected by cables or wirelessly connected. Parameters of the lamp group are adjusted according to a preset program and rules, one or more LEDs of the lamp group are adjusted in light, potential scenes are traversed automatically, the requirement of online testing can be met, and the risk of incomplete testing caused by limited offline testing videos is avoided.
The panoramic camera group 3 and the vehicle-mounted controller 5 are both provided with data transmission devices, and data transmission connection is established between the two data transmission devices through a data line, a wireless local area network (such as wifi) or a mobile cellular network (such as a 5G communication network). And performing image fusion of overlooking visual angles on the pictures transmitted by the all-round-looking camera group 3 according to a preset program, and feeding back to a user.
Example 4
On the basis of the embodiment 1, the light absorbing material layers are uniformly arranged on all side surfaces of the inner hollow space of the box body except the area where the light source device is arranged. The light absorption material layer can be a coated light absorption film, a light absorption coating or a light absorption plate which is arranged on the surface of the inner hollow space and coated with a light absorption material. The light absorption material can effectively absorb the light rays on other side surfaces outside the side surface where the light absorption material is positioned, and the light rays emitted by other side surfaces are prevented from being interfered after being reflected. Therefore, the light simulation effect of the whole device is not influenced, and the accuracy of test data and test effect is ensured.
It should be understood that the above examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should also be understood that various changes and modifications can be made by one skilled in the art after reading the disclosure of the present invention, and equivalents fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. Testing arrangement of vehicle panorama system of looking around, its characterized in that, the device includes: the system comprises a box body with a hollow interior, a plurality of light source devices, a look-around camera group, a vehicle machine controller, a light source controller and at least one power supply device;
the side surfaces and the top surface of the periphery of the interior of the box body are provided with a plurality of light source devices, and a panoramic camera group is placed in the center of the bottom surface of the interior of the box body;
the all-round-looking camera group is formed by surrounding a plurality of wide-angle cameras;
the signal connection is established between the light source devices provided with the signal interfaces and the light source controller provided with the signal interfaces through the signal interfaces;
the data transmission connection is established between the panoramic camera group provided with the data transmission interface and the vehicle-mounted computer controller provided with the data transmission interface through the data transmission interface;
and the power supply device is in circuit connection with the power supply interfaces of the plurality of light source devices, the around-looking camera group, the vehicle controller and the light source controller.
2. The apparatus for testing a vehicle panoramic looking-around system according to claim 1, wherein a plurality of light source devices are disposed on the bottom surface of the interior of the box.
3. The testing device of the vehicle panoramic looking-around system according to claim 1 or 2, characterized in that a vehicle model is placed at the center of the bottom surface inside the box body, and the looking-around camera group is installed at the peripheral side surface or the roof of the vehicle model.
4. The testing device of the vehicle panoramic all-round system according to claim 3, characterized in that the all-round camera group is formed by a plurality of 160-200 degree wide-angle cameras in a surrounding manner, and the plurality of wide-angle cameras of the all-round camera group are respectively mounted on the front, rear, left and right side surfaces of the vehicle model in a surrounding manner.
5. The testing device of the vehicle panoramic all-around system according to claim 4, characterized in that calibration devices are arranged at four corners of the bottom surface inside the box body and in the front, rear, left and right directions taking the center point of the bottom surface as the axis, and the calibration devices are used as reference objects for parameter correction of the testing device.
6. The testing device of the vehicle panoramic looking around system of claim 5, wherein the light source device is an LED lamp.
7. The vehicle panoramic looking around system test device of claim 6, wherein the box is rectangular, square or dome shaped.
8. The testing apparatus of the vehicle panoramic look-around system of claim 7, wherein the set-up signal connection is configured to be set up by a cable.
9. The apparatus for testing a vehicle panoramic looking around system of claim 8, wherein the set-up data transmission connection is configured to set up data transmission connection through a data line, a wireless local area network, a mobile cellular network.
10. The testing device of the vehicle panoramic all-round system according to claim 9, characterized in that the light absorbing material layers are uniformly arranged on all sides of the inner hollow space of the box except the area where the light source device is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222720896.3U CN218217498U (en) | 2022-10-17 | 2022-10-17 | Testing device of vehicle panoramic looking-around system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222720896.3U CN218217498U (en) | 2022-10-17 | 2022-10-17 | Testing device of vehicle panoramic looking-around system |
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| CN218217498U true CN218217498U (en) | 2023-01-03 |
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| CN202222720896.3U Active CN218217498U (en) | 2022-10-17 | 2022-10-17 | Testing device of vehicle panoramic looking-around system |
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- 2022-10-17 CN CN202222720896.3U patent/CN218217498U/en active Active
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