CN-122009023-A - Vehicle-mounted front camera and vehicle-mounted front camera view field deflection control method

CN122009023ACN 122009023 ACN122009023 ACN 122009023ACN-122009023-A

Abstract

The application discloses a vehicle-mounted front camera and a vehicle-mounted front camera view field deflection control method, and relates to the technical field of auxiliary driving. The vehicle-mounted front camera comprises a view field deflection structure, a main optical lens group, an image sensor and a controller. Wherein the field of view deflecting structure comprises an actuator that actuates the optical element and drives its movement. The controller calculates a target view field deflection angle by acquiring running state parameters such as real-time speed of the vehicle, steering angle of the steering wheel and the like, and drives the actuating optical element to deflect, so that the view field direction of the camera is dynamically adjusted. Based on the design, the camera can actively and adaptively adjust the deflection angle of the visual field, eliminate the blind areas of the visual field under different driving scenes, and effectively improve the environment perception capability and the imaging stability of the auxiliary driving system.

Inventors

TIAN JIANQING
HUANG GUIRONG
WANG ZHE

Assignees

上汽通用五菱汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. The utility model provides a on-vehicle front camera, its characterized in that, on-vehicle front camera includes: A field-of-view deflecting structure comprising an actuating optical element for changing the transmission direction of incident light rays and an actuator for driving the actuating optical element to move; The main optical lens group is used for converging the light deflected by the view field deflection structure to a photosensitive area of the pattern sensor and forming an optical image; the image sensor is used for converting the optical image into a corresponding image electric signal; and the controller is electrically connected with the actuator and is used for controlling the micro-actuator to drive the actuating optical element to move according to the motion state parameter of the vehicle so as to adjust the view field deflection angle of the camera to the corresponding target view field deflection angle.
2. The vehicle front camera of claim 1, wherein the actuation optical element comprises a liquid prism disposed at an entrance of the main optical lens group; The liquid prism comprises a flexible film cavity filled with optical liquid and window glass; The actuator is mechanically connected with the edge area of the window glass and is used for driving the window glass to rotate.
3. The front camera of claim 1, wherein the actuating optical element comprises a planar mirror disposed on a side of the light entrance of the main optical lens group; The non-reflecting surface of the plane reflecting mirror is provided with at least one rotating shaft; The actuator is mechanically connected with at least one rotating shaft and is used for driving the plane mirror to rotate along the at least one rotating shaft.
4. The vehicle front camera of any of claims 1-3, wherein the actuator comprises one of a voice coil motor, a MEMS motor, a stepper motor, and a piezoelectric actuator.
5. A method for controlling deflection of a field of view of a front camera in a vehicle, which is applied to the front camera in the vehicle according to any one of claims 1 to 4, and includes the steps of: Acquiring current running state parameters of a vehicle, wherein the running state parameters at least comprise real-time vehicle speed and steering angle of a steering wheel; determining a target view deflection angle currently required by a camera according to the real-time vehicle speed and the steering angle of the steering wheel; And adjusting the view field deflection angle of the camera to the target view field deflection angle through a view field deflection structure.
6. The method for controlling deflection of a field of view of a front camera on a vehicle according to claim 5, wherein the step of determining a target field of view deflection angle currently required by the camera according to the real-time vehicle speed and the steering angle of the steering wheel comprises; when the real-time vehicle speed is detected to be not greater than a first preset vehicle speed, determining the target view field deflection angle according to a low-speed control strategy, the real-time vehicle speed and the steering wheel steering angle; When the real-time vehicle speed is detected to be larger than the first preset vehicle speed and smaller than the second preset vehicle speed, determining the target view field deflection angle according to a medium speed control strategy, the real-time vehicle speed and the steering wheel steering angle; and when the real-time vehicle speed is detected to be not smaller than the second preset vehicle speed, determining the target view field deflection angle according to a high-speed control strategy, the real-time vehicle speed and the steering wheel steering angle.
7. The vehicle-mounted front camera field of view deflection control method of claim 6, wherein the step of determining the target field of view deflection angle from a low speed control strategy, the real-time vehicle speed, and the steering wheel steering angle comprises: When the low-speed control strategy is adopted, detecting whether a preset triggering condition is met, wherein the preset triggering condition comprises any one of the starting of a vehicle steering lamp or the absolute value of the steering angle of the steering wheel is not smaller than a first preset angle; And when the preset triggering condition is met, determining the target view field deflection angle based on the real-time vehicle speed, the first preset vehicle speed, the steering wheel steering angle, a preset steering coefficient and a preset basic deflection angle.
8. The vehicle-mounted front camera view deflection control method of claim 6, wherein the operating state parameters further include a vibration acceleration of a vehicle, and wherein determining the target view deflection angle according to a high-speed control strategy, the real-time vehicle speed, and the steering wheel steering angle comprises: Detecting whether the steering angle of the steering wheel is smaller than a second preset angle or not when the high-speed control strategy is adopted; when the absolute value of the steering angle of the steering wheel is detected to be smaller than the second preset angle, limiting the deflection angle of the target view field to be within a preset deflection angle range, and acquiring the vibration acceleration; When the vibration acceleration is larger than a preset vibration acceleration, determining a target compensation angle according to the vibration acceleration and a preset compensation coefficient; And determining the target view field deflection angle based on the target compensation angle and a preset basic deflection angle.
9. The vehicle-mounted front camera view deflection control method according to claim 6, wherein the step of determining the target view deflection angle according to a medium speed control strategy, the real-time vehicle speed, and the steering wheel steering angle comprises: And determining the target view field deflection angle based on a preset deflection angle mapping table, the real-time vehicle speed and the steering wheel steering angle.
10. The method for controlling field of view deflection of an onboard front camera according to claim 6, wherein after the step of adjusting the field of view deflection angle of the camera to the target field of view deflection angle by a field of view deflection structure, further comprising: detecting whether a preset correcting condition is met currently, wherein the preset correcting condition comprises that a vehicle steering lamp is turned off, and the absolute value of the steering angle of the steering wheel is not larger than a third preset angle; And when the preset correcting condition is met, the view field deflection angle of the camera is corrected to a preset basic deflection angle at a preset angular speed through a view field deflection structure.

Description

Vehicle-mounted front camera and vehicle-mounted front camera view field deflection control method Technical Field The application relates to the technical field of auxiliary driving, in particular to a vehicle-mounted front camera and a vehicle-mounted front camera view field deflection control method. Background In general, an in-vehicle front view camera is generally fixedly mounted at an upper middle portion of a windshield of a vehicle, and a viewing angle thereof is fixed. However, the fixed view field design is difficult to cover blind areas near the A column of the vehicle when the vehicle turns at a low speed or passes through an intersection, the collision risk is increased, and the vehicle vibration easily causes image blurring when the vehicle runs at a high speed, so that the target recognition is influenced. In the prior art, in order to enlarge the field of view, a scheme of adopting an ultra-wide angle lens is adopted, but serious image distortion is introduced, and a scheme of adopting a mechanical holder to drive the whole camera to rotate is also adopted, but the problems of low response speed, large volume and high cost exist. Disclosure of Invention The application mainly aims to provide a vehicle-mounted front camera and a vehicle-mounted front camera view field deflection control method, which aim to solve the technical problem of how to quickly eliminate view blind areas of a vehicle in various driving scenes under the condition of ensuring image quality. In order to achieve the above object, an embodiment of the present application provides a vehicle-mounted front camera, including: A field-of-view deflecting structure comprising an actuating optical element for changing the transmission direction of incident light rays and an actuator for driving the actuating optical element to move; The main optical lens group is used for converging the light deflected by the view field deflection structure to a photosensitive area of the pattern sensor and forming an optical image; the image sensor is used for converting the optical image into a corresponding image electric signal; and the controller is electrically connected with the actuator and is used for controlling the micro-actuator to drive the actuating optical element to move according to the motion state parameter of the vehicle so as to adjust the view field deflection angle of the camera to the corresponding target view field deflection angle. In an embodiment, the actuating optical element includes a liquid prism disposed at the light inlet of the main optical lens group; The liquid prism comprises a flexible film cavity filled with optical liquid and window glass; The actuator is mechanically connected with the edge area of the window glass and is used for driving the window glass to rotate. In an embodiment, the actuating optical element includes a plane mirror disposed at a side of the light inlet of the main optical lens group; The non-reflecting surface of the plane reflecting mirror is provided with at least one rotating shaft; The actuator is mechanically connected with at least one rotating shaft and is used for driving the plane mirror to rotate along the at least one rotating shaft. In an embodiment, the actuator comprises one of a voice coil motor, a MEMS motor, a stepper motor, and a piezoelectric actuator. In addition, the application also provides a vehicle-mounted front camera view field deflection control method which is applied to the vehicle-mounted front camera, and comprises the following steps of: Acquiring current running state parameters of a vehicle, wherein the running state parameters at least comprise real-time vehicle speed and steering angle of a steering wheel; determining a target view deflection angle currently required by a camera according to the real-time vehicle speed and the steering angle of the steering wheel; And adjusting the view field deflection angle of the camera to the target view field deflection angle through a view field deflection structure. In one embodiment, the step of determining the target view deflection angle currently required by the camera according to the real-time vehicle speed and the steering angle of the steering wheel comprises the following steps of; when the real-time vehicle speed is detected to be not greater than a first preset vehicle speed, determining the target view field deflection angle according to a low-speed control strategy, the real-time vehicle speed and the steering wheel steering angle; When the real-time vehicle speed is detected to be larger than the first preset vehicle speed and smaller than the second preset vehicle speed, determining the target view field deflection angle according to a medium speed control strategy, the real-time vehicle speed and the steering wheel steering angle; and when the real-time vehicle speed is detected to be not smaller than the second preset vehicle speed, determining the target view field deflection angle accordi