CN117962751A - Vehicle A column blind area detection system and detection method - Google Patents
Vehicle A column blind area detection system and detection method Download PDFInfo
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- CN117962751A CN117962751A CN202410359453.7A CN202410359453A CN117962751A CN 117962751 A CN117962751 A CN 117962751A CN 202410359453 A CN202410359453 A CN 202410359453A CN 117962751 A CN117962751 A CN 117962751A
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Abstract
The invention discloses a vehicle A column blind area detection system and a detection method, wherein a camera and a display are arranged at a left column A and a right column A and are matched with radars at left and right side fender panels, after a blind area target object is detected by the radars, blind areas with risks can be accurately fed back for a driver through built-in acousto-optic devices of the display, and whether an automatic emergency braking system is triggered to work under the working condition is determined through radar feedback, blind area images and braking operation response of the driver so as to assist the driver to stop the vehicle; the camera mounting holes are reserved at the outer plate of the A column, holes are not needed to be reserved on the inner plate and the reinforcing plate, and the safety of the automobile body is ensured while the strength of the A column is considered. According to the invention, through radar detection and visual auxiliary monitoring of the corresponding blind areas, the situation of the area shielded by the A column can be reliably obtained, and when the collision risk of the A column blind area is not recognized by a driver and braking measures are not taken at the first time, automatic emergency braking can be executed, so that accidents are effectively avoided.
Description
Technical Field
The invention relates to the technical field of vehicle blind area detection, in particular to a vehicle A column blind area detection system and a detection method.
Background
With the continuous development of intelligent technology in the field of traffic vehicles, more active and passive safety technologies are applied to automobiles. Safety is always a critical point in the development process of automobiles in various periods, and safety-assisted driving technologies which are continuously developed in recent years comprise: BSD, AEB, FCW, ELK, and the like, and the main implementation mode is to detect the surrounding environment of the vehicle through a camera, a radar and the like and identify the target with collision risk, so that a driver is timely reminded of paying attention to safety, or the vehicle takes braking or avoiding measures independently to ensure safety.
Taking the BSD blind area monitoring function installed on a vehicle as an example, the monitoring system detects whether other vehicles exist in the blind area behind the adjacent lane or not by utilizing a millimeter wave radar, or whether a rider or a pedestrian approaches, and when an object approaches the vehicle or other vehicles exist in the blind area, the monitoring system outputs an alarm in a sound, light and other modes so as to remind the driver of safety.
However, the existing blind area detection mode has hysteresis, and when the vehicle feeds back the BSD alarm signal, the vehicle or other objects in the blind area are likely to be relatively close to, or even about to touch the vehicle. In addition, the existing blind area detection mode mainly prompts a driver to drive carefully through traditional alarm lamps or buzzes and the like, however, the driver cannot accurately and rapidly know which part of blind areas have safety risks in the short time, particularly on a road with insufficient illumination at night or when a relatively small object such as a pedestrian or a bicycle passes through suddenly in the blind areas of the left and right A columns of the vehicle, the vehicle is difficult to recognize and give an alarm in time, and the driver cannot make a response measure at the first time.
Disclosure of Invention
In view of the foregoing, the present invention is directed to a vehicle a pillar blind area detection system and a detection method, so as to solve the aforementioned technical problems.
The technical scheme adopted by the invention is as follows:
In a first aspect, the present invention provides a vehicle a-pillar blind zone detection system, including: the device comprises cameras respectively arranged on a left A column outer plate and a right A column outer plate, displays respectively arranged on the left A column inner plate and the right A column inner plate, radars respectively arranged at a left fender and a right fender, and a vehicle-mounted control unit;
The display is used for displaying images shot by the camera, a warning lamp and/or a buzzer which are associated with the radar electric signal are arranged in the display, and the vehicle-mounted control unit decides whether to trigger the automatic emergency braking system to work according to the radar detection signal, the images shot by the camera and the braking response of a driver.
In at least one possible implementation manner, the direction and the angle of shooting by the camera have an adjusting function.
In at least one possible implementation manner, the field of view of the camera is: and the angle of the shielded sector area projected from the steering position to the left column A and the right column A is 10-30 degrees.
In at least one possible implementation thereof, the radar comprises a short range millimeter wave radar.
The invention provides a vehicle A column blind area detection method, which comprises the following steps:
After the vehicle is started, triggering cameras outside the left column A and the right column A to collect blind area images in real time, displaying the images through displays inside the left column A and the right column A, and activating radars at the left fender and the right fender to start working;
Triggering a corresponding display to output sound and/or light alarm after the radar detects a target object, and starting to monitor a brake response based on a driver;
Judging whether the vehicle brakes and decelerates according to the detection signal of the radar, the image shot by the display and the braking response;
And if the braking is judged not to be executed and the speed is reduced, triggering the automatic emergency braking system to work so as to brake the vehicle.
In at least one possible implementation manner, the detection method further comprises:
After the vehicle is started, detecting the speed of the vehicle;
when the vehicle speed is greater than or equal to a preset threshold value, triggering the camera, the display and the radar to work.
In at least one possible implementation manner, the detection method further comprises:
after the vehicle is started, detecting a detection signal of the radar;
And triggering the camera to collect the blind area image and displaying the blind area image through the display after the radar feeds back the signal.
Compared with the prior art, the invention has the main design concept that by configuring the cameras and the corresponding displays at the left column A and the right column A and matching with the radars at the left fender and the right fender, the blind area with the risk can be accurately fed back for the driver through the built-in acousto-optic device of the display after the radar detects the blind area target object, and whether the automatic emergency braking system is triggered to work under the working condition can be decided through radar feedback, blind area images and braking operation response of the driver so as to assist the driver to stop the vehicle; the camera mounting holes are reserved at the outer plate of the A column, holes are not needed to be reserved on the inner plate and the reinforcing plate, and the safety of the automobile body is ensured while the strength of the A column is considered. According to the invention, through radar detection and vision auxiliary monitoring of the corresponding blind area, the situation of the area shielded by the A column can be reliably obtained, and when the driver does not recognize the collision risk of the A column blind area and does not take braking measures for the first time, automatic emergency braking can be executed, so that accidents are effectively avoided.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
Fig. 1 is a schematic flow chart of a method for detecting a dead zone of a vehicle a pillar according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The invention provides an embodiment of a vehicle A-pillar blind area detection system, which specifically comprises the following components: the automobile comprises cameras respectively arranged on a left A column outer plate and a right A column outer plate, displays respectively arranged on the left A column inner plate and the right A column inner plate, radars respectively arranged at a left fender and a right fender, and an automobile-mounted control unit (such as a BCM, an ESC and the like);
The display is used for displaying images shot by the camera, a warning lamp and/or a buzzer which are associated with the radar electric signal are arranged in the display, and the vehicle-mounted control unit decides whether to trigger the automatic emergency braking system (Autonomous Emergency Braking, AEB for short) to work according to the detection signal of the radar, the images shot by the camera and the braking response of a driver.
For the expansion of the embodiment, a small hole with the diameter of about 1CM can be reserved below the left and right A-pillar outer plates of the vehicle and used for installing a camera (the diameter of the camera is 1-1.2 CM), so that the rigidity and the strength of the A-pillar are not lost. Meanwhile, the camera can collect all the vision shielded by the A column and feed back the vision to a driver through a display correspondingly built in. For the view field range of the camera, it can be stated that the shooting direction and angle of the camera can be finely adjusted at the vehicle end to adapt to different drivers (the angle of the vehicle-mounted camera device is adjusted to be a mature technology, which is not described here in detail), specifically, the view field of the camera comprises a blocked sector area projected from the driving position to the left and right A column directions, and the angle of the sector area is between 10 degrees and 30 degrees.
Regarding the aforementioned radar, it is preferable to use a short-range millimeter wave radar, the maximum detection distance of which is 50M, and after it recognizes that there is a collision risk of the target object, on the one hand, the signal is forwarded to the control unit (BCM/ESC), on the other hand, an alarm can be correspondingly output in a certain display in an acousto-optic manner, so that the driver can timely and accurately recognize which blind area detects the risk target object.
Through the mutual matching of the cameras and the radar, images of left and right A column dead zones of the vehicle can be acquired and displayed to a driver in real time, so that the driver can find dead zone targets at the first time and take deceleration and braking measures; in addition, the radar at the fender can also feed back alarm signals (light and/or alarm sound) through devices built in the display within preset collision time (TTC) when the vehicle runs in a turning working condition or a road section with insufficient illumination, so that a driver can be helped to timely identify dangerous factors and take countermeasures rapidly.
The vehicle-mounted control unit utilizes multiple dimensions, including radar signals, image signals and signals of a driver operating a brake pedal, can judge whether the driver reliably and timely takes braking measures when a risk target object exists in a blind area, and if the driver is judged to have no braking response under the working condition, the AEB system is triggered to execute automatic emergency braking so as to ensure safety.
Corresponding to the above system, specifically, as shown in conjunction with fig. 1, the blind area detection method may include:
Step S1, triggering cameras outside a left column A and a right column A to collect blind area images in real time after a vehicle is started, displaying the images through displays inside the left column A and the right column A, and activating radars at left and right fender panels to start working;
Step S2, triggering a corresponding display to output sound and/or light alarm after the radar detects a target object, and starting to monitor a brake response based on a driver;
Step S3, judging whether the vehicle brakes and decelerates according to the detection signal of the radar, the image shot by the display and the braking response;
and S4, if the braking is not executed and the speed is reduced, triggering the automatic emergency braking system to work so as to brake the vehicle.
For this embodiment of the method, it may be further added that step S1 may be optimized to detect the vehicle speed after the vehicle is started, and trigger the camera, the display, and the radar to operate when the vehicle speed is greater than or equal to a preset threshold (e.g. 10 kph). Or in other embodiments, the above components have a priority working sequence, for example, the camera can be triggered to collect the dead zone image and display the dead zone image through the display when the radar feedback signal is sent, and it will be understood that this way can save unnecessary power supply and operation energy, so that a suitable detection distance can be calibrated for the radar in advance, so that enough time is needed to trigger the camera and the display to work when the radar feedback signal is sent.
In summary, the main design concept of the invention is that, by configuring the cameras and the corresponding displays at the left and right a-pillars and matching with the radars at the left and right fender panels, the radar can accurately feed back the blind area with risk for the driver through the built-in acousto-optic device of the display after detecting the blind area target object, and can decide whether to trigger the automatic emergency braking system to work under the working condition through the radar feedback, the blind area image and the braking operation response of the driver so as to assist the driver to stop the vehicle; the camera mounting holes are reserved at the outer plate of the A column, holes are not needed to be reserved on the inner plate and the reinforcing plate, and the safety of the automobile body is ensured while the strength of the A column is considered. According to the invention, through radar detection and vision auxiliary monitoring of the corresponding blind area, the situation of the area shielded by the A column can be reliably obtained, and when the driver does not recognize the collision risk of the A column blind area and does not take braking measures for the first time, automatic emergency braking can be executed, so that accidents are effectively avoided.
In embodiments of the present invention, when reference is made to a phrase that expresses an orientation, it is based on the relative concepts of the embodiments, with the proviso that "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relation of association objects, and indicates that there may be three kinds of relations, for example, a and/or B, and may indicate that a alone exists, a and B together, and B alone exists. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of the following" and the like means any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
The construction, features and effects of the present invention are described in detail according to the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention, and it should be understood that the technical features of the above embodiment and the preferred mode thereof can be reasonably combined and matched into various equivalent schemes by those skilled in the art without departing from or changing the design concept and technical effects of the present invention; therefore, the invention is not limited to the embodiments shown in the drawings, but is intended to be within the scope of the invention as long as changes made in the concept of the invention or modifications to the equivalent embodiments do not depart from the spirit of the invention as covered by the specification and drawings.
Claims (7)
1. A vehicle a-pillar blind zone detection system, comprising: the device comprises cameras respectively arranged on a left A column outer plate and a right A column outer plate, displays respectively arranged on the left A column inner plate and the right A column inner plate, radars respectively arranged at a left fender and a right fender, and a vehicle-mounted control unit;
The display is used for displaying images shot by the camera, a warning lamp and/or a buzzer which are associated with the radar electric signal are arranged in the display, and the vehicle-mounted control unit decides whether to trigger the automatic emergency braking system to work according to the radar detection signal, the images shot by the camera and the braking response of a driver.
2. The vehicle a-pillar blind spot detection system according to claim 1, wherein the direction and angle of the camera shooting have an adjusting function.
3. The vehicle a-pillar blind spot detection system of claim 1, wherein the field of view of the camera is: and the angle of the shielded sector area projected from the steering position to the left column A and the right column A is 10-30 degrees.
4. The vehicle a-pillar blind spot detection system according to any one of claims 1 to 3, wherein the radar includes a short-range millimeter wave radar.
5. The vehicle A column blind area detection method is characterized by comprising the following steps of:
After the vehicle is started, triggering cameras outside the left column A and the right column A to collect blind area images in real time, displaying the images through displays inside the left column A and the right column A, and activating radars at the left fender and the right fender to start working;
Triggering a corresponding display to output sound and/or light alarm after the radar detects a target object, and starting to monitor a brake response based on a driver;
Judging whether the vehicle brakes and decelerates according to the detection signal of the radar, the image shot by the display and the braking response;
And if the braking is judged not to be executed and the speed is reduced, triggering the automatic emergency braking system to work so as to brake the vehicle.
6. The vehicle a-pillar blind spot detection method according to claim 5, characterized in that the detection method further comprises:
After the vehicle is started, detecting the speed of the vehicle;
when the vehicle speed is greater than or equal to a preset threshold value, triggering the camera, the display and the radar to work.
7. The vehicle a-pillar blind spot detection method according to claim 5, characterized in that the detection method further comprises:
after the vehicle is started, detecting a detection signal of the radar;
And triggering the camera to collect the blind area image and displaying the blind area image through the display after the radar feeds back the signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410359453.7A CN117962751A (en) | 2024-03-27 | 2024-03-27 | Vehicle A column blind area detection system and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410359453.7A CN117962751A (en) | 2024-03-27 | 2024-03-27 | Vehicle A column blind area detection system and detection method |
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| CN117962751A true CN117962751A (en) | 2024-05-03 |
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| CN202410359453.7A Pending CN117962751A (en) | 2024-03-27 | 2024-03-27 | Vehicle A column blind area detection system and detection method |
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