Vehicle transverse collision warning and obstacle position recognition method and system

Abstract

The invention belongs to the technical field of automobiles, and particularly relates to a vehicle transverse collision warning and obstacle position recognition method and system. The identification method comprises the following steps: 1, adjusting the angles of the four-door radar according to the vehicle speed; 2, when the radar judges whether collision early warning is needed or not, if collision early warning is needed, a signal is sent to an actuator of the corresponding vehicle door; and step 3, performing collision warning by each actuator. The identification system comprises a controller and an actuator; and the controller is connected with the actuator. The controller comprises a rotary angle radar, a vehicle body controller and an instrument controller; the actuator comprises an atmosphere lamp, a loudspeaker, a horn and an instrument. The four radars are installed on front doors on the two sides and rear doors on the two sides respectively. The interior of the radar is provided with a corner motor, and the transverse angle and depression angle of the four-gate radar are adjusted through the motor. According to the invention, collision, scratch and pedestrians can be early warned, and the safety risk is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of automobile technology, and in particular to a vehicle lateral collision warning and obstacle position recognition method and system. Background Art

[0002] In the prior art, after the side radar obstacle issues a warning, the driver generally relies on a panoramic camera or sticks his head out of the window to confirm the obstacle information. However, due to factors such as weather and safety, people are often unable to efficiently judge the obstacle information, which makes the whole vehicle obstacle warning have the disadvantage of low cost performance. In addition, when the vehicle is driving, due to the lack of warning of the side collision of the vehicle and the relaxation of vigilance by the occupants, when a collision occurs, the occupants are unable to take self-protection actions in time, causing safety risks. Summary of the invention

[0003] To solve the above problems, the present invention provides a vehicle lateral collision warning and obstacle position recognition method and system, which can provide early warning of collisions, scratches, and pedestrians to reduce safety risks.

[0004] The technical solution of the present invention is described as follows in conjunction with the accompanying drawings:

[0005] In a first aspect, the present invention provides a vehicle lateral collision warning and obstacle position recognition method, comprising:

[0006] Step 1: Adjust the four-door radar angle according to the vehicle speed;

[0007] Step 2: When the radar determines whether a collision warning is needed, if a collision warning is needed, a signal is sent to the actuator of the corresponding door;

[0008] Step 3: Each actuator issues a collision warning.

[0009] Furthermore, the specific method of step one is as follows:

[0010] a) When the parking speed is below 5 km / h, only the radar depression angle is adjusted from 0° to 15°;

[0011] b) When the vehicle enters the low speed state, i.e. the vehicle speed is above 5 km / h and below 30 km / h, the lateral angle starts to be adjusted from 15° to 40°, and the pitch angle is flat at a speed of 30 km / h;

[0012] c) At medium speeds, i.e. above 30 km / h, only the horizontal angle changes, from 40° to 60°;

[0013] d) When entering the high speed, i.e. at 60 kilometers per hour, the lateral angle is most forward and will not change even if the speed increases.

[0014] Furthermore, the specific direction of step 2 is as follows:

[0015] When the collision time between our vehicle and the other vehicle is less than 1300 milliseconds and the speed is greater than 30 kilometers, it is determined that a collision warning is needed, and a signal is sent to the actuator after the warning;

[0016] Furthermore, the specific method of step three is as follows:

[0017] When a lateral collision warning occurs during normal driving, the speaker on the collision side emits a warning sound; the ambient light on the collision side lights up; the horn sounds; the other ambient lights turn down in brightness; and the other speakers turn down in volume;

[0018] When an obstacle appears on the side while driving at a low speed, the radar determines the location of the obstacle; the corresponding high and low ambient lights on the door light up when near and darker when far; the corresponding door speakers speed up when near and slow down when far; and the instrument gives prompts.

[0019] When the vehicle speed is 0 and the gear is P, the radar turns to the rear / front corner. When someone / object approaches, only the ambient light warning color and the instrument prompt are displayed, and the speaker does not operate. The warning color changes from yellow to red. If there is a slight risk of scratching / a smaller obstacle, the color is yellow. The higher the scratch risk level / the larger the obstacle, the color changes from yellow to yellow-red and finally to red. When there is no risk, the ambient light color has normal decorative brightness and fluctuations.

[0020] Furthermore, when a lateral collision warning occurs during normal driving, the ambient light on the collision side lights up red.

[0021] In a second aspect, the present invention further provides a vehicle lateral collision warning and obstacle position recognition system, comprising a controller and an actuator; the controller and the actuator are connected.

[0022] Furthermore, the controller includes a rotatable radar, a body controller and an instrument controller; the actuator includes an ambient light, a speaker, a horn and an instrument.

[0023] Furthermore, the radar has four parts installed on the front doors on both sides and the rear doors on both sides; the radar is equipped with a corner motor inside, and the lateral angle and depression angle of the four-door radar are adjusted by the motor.

[0024] The beneficial effects of the present invention are:

[0025] 1) The present invention uses vehicle speed information to control the radar angle so that it can simultaneously support three functions: scratch warning, collision warning, and pedestrian warning;

[0026] 2) The present invention uses ambient lights, speakers and horns to warn occupants of the vehicle of the direction of collision and the level of risk of scratches;

[0027] 3) The present invention has three different warnings. The atmosphere lights, radars, speakers, horns and instruments use different execution logics to achieve control logic for different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 Radar schematic diagram for reversing;

[0030] Figure 2 This is a schematic diagram of a lateral collision warning during normal driving;

[0031] Figure 3 This is a schematic diagram of an obstacle appearing on the side when driving at low speed;

[0032] Figure 4 It is a working diagram of the vehicle lateral collision warning and obstacle position recognition system during collision warning;

[0033] Figure 5 It is a working diagram of the vehicle lateral collision warning and obstacle position recognition system during scratch warning;

[0034] Figure 6 It is a schematic diagram of the operation of the vehicle lateral collision warning and obstacle position recognition system without warning;

[0035] Figure 7 Schematic diagram of radar when warning pedestrians. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] Embodiment 1

[0039] See also Figure 2 and Figure 3This embodiment provides a vehicle lateral collision warning and obstacle position recognition method, including:

[0040] Step 1: Adjust the four-door radar angle according to the vehicle speed, as follows:

[0041] a) When the parking speed is below 5 km / h, only the radar depression angle is adjusted from 0° to 15°;

[0042] b) When the vehicle enters the low speed state, i.e. the vehicle speed is above 5 km / h and below 30 km / h, the lateral angle starts to be adjusted from 15° to 40°, and the pitch angle is flat at a speed of 30 km / h;

[0043] c) At medium speeds, i.e. above 30 km / h, only the horizontal angle changes, from 40° to 60°;

[0044] d) When entering the high speed, i.e. at 60 kilometers per hour, the lateral angle is most forward and will not change even if the speed increases.

[0045] Step 2: When the radar determines whether a collision warning is needed, if a collision warning is needed, a signal is sent to the actuator of the corresponding door, as follows:

[0046] When the collision time between us and the other party is less than 1300 milliseconds and the speed is greater than 30 kilometers, it is determined that a collision warning is needed. (The normal human reaction time is 300 milliseconds, and a normal car can complete an emergency brake stop in one second).

[0047] Step 3: Each actuator performs a collision warning, as follows:

[0048] When a lateral collision warning occurs during normal driving, the speaker on the collision side emits a warning sound; the ambient light on the collision side lights up; the horn sounds; the other ambient lights turn down in brightness; and the other speakers turn down in volume;

[0049] When an obstacle appears on the side while driving at a low speed, the radar determines the location of the obstacle; the corresponding high and low ambient lights on the door light up when near and darker when far; the corresponding door speakers speed up when near and slow down when far; and the instrument gives prompts.

[0050] When the vehicle speed is 0 and the gear is P, the radar turns to the rear / front corner. When someone / object approaches, only the ambient light warning color and the instrument prompt are displayed, and the speaker does not operate. The warning color changes from yellow to red. If there is a slight risk of scratching / a smaller obstacle, the color is yellow. The higher the scratch risk level / the larger the obstacle, the color changes from yellow to yellow-red and finally to red. When there is no risk, the ambient light color has normal decorative brightness and fluctuations.

[0051] The warning distance range for minor scratches is 100±5cm below and 50±10cm above the nearest point of the radar; the radar is in a bird's-eye view at low speeds. If the angle remains unchanged, the higher the obstacle, the closer the distance to the nearest point of the obstacle sensed by the radar, and the size of the obstacle can be judged in this way.

[0052] When a lateral collision warning occurs during normal driving, the ambient light on the collision side lights up red.

[0053] Embodiment 2

[0054] See also Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This embodiment provides a vehicle lateral collision warning and obstacle position recognition system, including a controller and an actuator; the controller and the actuator are connected.

[0055] The controller includes a rotatable radar, a body controller and an instrument controller; the actuator includes an ambient light, a speaker, a horn and an instrument.

[0056] There are four radars installed on the front doors and rear doors on both sides, and their height is slightly lower than the door handles. The front door radar is located in the front area of ​​the door, and the rear door radar is located in the rear area of ​​the door. The radar is equipped with a corner motor inside, and the lateral angle and pitch angle of the four-door radar are adjusted by the motor. The radar angle is controlled by a special controller.

[0057] When the vehicle power mode is not in P gear (with speed), the collision warning controller adjusts the four-door radar angles (lateral angle and depression angle) through the motor according to the vehicle speed. The faster the speed, the closer the depression angle is to the horizontal view, and the more forward the lateral angle is. Figure 1 When the speed is zero, the lateral angle of the radar will change depending on the gear. The radar faces forward when driving forward and faces backward when reversing.

[0058] The four-door collision warning is determined by radar, and the condition is that the vehicle is not in P gear and has speed (it can be turned on at the same time as the scratch warning). When the radar determines that a collision warning is needed, it directly sends a signal to the actuator of the corresponding door for collision warning, the ambient light is bright red, the speaker warns, and the horn honks; when the vehicle is not in P gear and driving at a low speed, when the radar senses an obstacle at a close distance, the ambient light warning color of the corresponding door, the speaker warning sound, and the instrument text prompts to check the surroundings of the corresponding door to prevent the door from scratching. When the vehicle speed is 0 and the gear is P, the radar turns to the back / front, and when someone / object approaches, only the ambient light warning color and instrument prompts, and the speaker does not act. The warning color ranges from yellow to red. The color is yellow for slight scratch risk / small obstacle. The higher the scratch risk level / larger the obstacle, the closer the color is to red (yellow-yellow-red-red). When there is no risk, the ambient light color has normal decorative brightness and fluctuation.

[0059] In summary, the present invention can provide early warnings for collisions, scratches, and pedestrians, thereby reducing safety risks.

[0060] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention. These simple variations all belong to the protection scope of the present invention.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0062] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A method for vehicle lateral collision warning and obstacle position recognition, characterized in that: The following steps are involved: Step 1: Adjust the four-door radar angle according to the vehicle speed; Step 2: When the radar determines whether a collision warning is needed, if a collision warning is needed, a signal is sent to the actuator of the corresponding door; Step 3: Each actuator issues a collision warning.

2. The method for vehicle lateral collision warning and obstacle position recognition according to claim 1, characterized in that: The specific method of step one is as follows: a) When the parking speed is below 5 km / h, only the radar depression angle is adjusted from 0° to 15°; b) When the vehicle enters the low speed state, i.e. the vehicle speed is above 5 km / h and below 30 km / h, the lateral angle starts to be adjusted from 15° to 40°, and the pitch angle is flat at a speed of 30 km / h; c) At medium speeds, i.e. above 30 km / h, only the horizontal angle changes, from 40° to 60°; d) When entering the high speed, i.e. at 60 kilometers per hour, the lateral angle is most forward and will not change even if the speed increases.

3. The method for vehicle lateral collision warning and obstacle position recognition according to claim 2, characterized in that: The specific direction of step 2 is as follows: When the collision time between our vehicle and the other vehicle is less than 1300 milliseconds and the speed is greater than 30 kilometers, it is determined that a collision warning is required, and a signal is sent to the actuator after the warning.

4. The method for vehicle lateral collision warning and obstacle position recognition according to claim 1, characterized in that: The specific method of step three is as follows: When a lateral collision warning occurs during normal driving, the speaker on the collision side emits a warning sound; the ambient light on the collision side lights up; the horn sounds; the other ambient lights turn down in brightness; and the other speakers turn down in volume; When an obstacle appears on the side while driving at low speed, the radar determines the location of the obstacle; The corresponding door height and low ambient light are brighter near and darker far away; The corresponding door speakers are fast when near and slow when far; The instrument gives a prompt. When the vehicle speed is 0 and the gear is P, the radar turns to the rear / front corner. When someone / object approaches, only the ambient light warning color and the instrument prompt are displayed, and the speaker does not operate. The warning color changes from yellow to red. If there is a slight risk of scratching / a smaller obstacle, the color is yellow. The higher the scratch risk level / the larger the obstacle, the color changes from yellow to yellow-red and finally to red. When there is no risk, the ambient light color has normal decorative brightness and fluctuations.

5. The method for vehicle lateral collision warning and obstacle position recognition according to claim 4, characterized in that: When a lateral collision warning occurs during normal driving, the ambient light on the collision side lights up red.

6. A vehicle lateral collision warning and obstacle position recognition system, characterized in that: It includes a controller and an actuator; the controller and the actuator are connected.

7. The vehicle lateral collision warning and obstacle position recognition system according to claim 6, characterized in that: The controller includes a rotatable radar, a body controller and an instrument controller; the actuator includes an ambient light, a speaker, a horn and an instrument.

8. The vehicle lateral collision warning and obstacle position recognition system according to claim 7, characterized in that: There are four radars installed on the front doors on both sides and the rear doors on both sides; the radars are equipped with angle motors inside, and the lateral angles and depression angles of the four-door radars are adjusted by the motors.

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