CN114872613A - Car lamp control system and method and vehicle - Google Patents

Abstract

The present invention provides a vehicle lamp control system and method, and a vehicle. The vehicle lamp control system includes a detection unit, a control unit, and a vehicle lamp unit; the detection unit is used to obtain identification information of a target vehicle, The identification information of the target vehicle is sent to the control unit; the control unit is configured to receive the identification information, and generate a control instruction according to the identification information, and send it to the lamp unit; The control instruction adjusts the lighting mode of the vehicle light unit. After the above technical solution is adopted, it is possible to flexibly determine whether the lighting mode of the vehicle lamp needs to be adjusted, so as to ensure the driving safety of the vehicle and other vehicles on the road.

Description

A vehicle lamp control system and method, a vehicle

technical field

The present invention relates to the field of vehicle lamps, in particular to a vehicle lamp control system and method, and a vehicle.

Background technique

In the prior art, if the vehicle's lighting system does not have an intelligent control function, it is impossible to detect whether a vehicle behind is about to overtake, and thus the lighting mode of the vehicle cannot be further adjusted. When the light shines on the rearview mirror of the overtaking vehicle, the strong reflection of the rearview mirror will also cause dazzling, so that the driver of the overtaking vehicle cannot observe the situation of the vehicle behind from the rearview mirror, causing hidden dangers to the driving safety of the vehicle.

To address this technical problem, current vehicles with smart light control systems employ cameras to capture other road participants. The most common camera solution is a single front camera. At this time, due to the perspective of the camera, the camera cannot detect the overtaking vehicle from the rear in time, which will inevitably cause dazzling.

Although the prior art proposes a method of using vehicle-mounted radar to control lights during overtaking, it still requires the participation of cameras, and the core of the method is to use the time relationship between the radar at the front and the rear of the vehicle to detect the target vehicle to dazzle the entry of the vehicle. district to judge. This method is essentially a predictive control based on the time detected by the radar, and underestimates the actual replication conditions such as acceleration and deceleration when the target vehicle is overtaking. May cause delayed switching problems. At the same time, the patent also does not study how to restore normal lighting after the target vehicle enters the dark area judged by the radar. As a result, it is impossible to restore lighting by relying solely on radar signals.

SUMMARY OF THE INVENTION

In order to overcome the technical problem of the limited viewing angle of the camera and the inability to flexibly adjust the lighting mode of the vehicle lamp according to the actual road conditions, the present invention provides a vehicle lamp control system and method.

The invention discloses a vehicle lamp control system, comprising a detection unit, a control unit and a vehicle lamp unit;

The detection unit is used to obtain the identification information of the target vehicle, and send the identification information of the target vehicle to the control unit; the control unit is used to receive the identification information, and generate a control instruction according to the identification information, and send it to the control unit. The vehicle lamp unit; the vehicle lamp unit is used to adjust the lighting mode of the vehicle lamp unit according to the control instruction.

Preferably, the detection unit is an angular radar.

Preferably, the detection unit is used to detect the identification information of the target vehicle, the identification information includes the distance information of the target vehicle, the azimuth angle and the body size of the target vehicle; the control unit is used to receive the information of the target vehicle. the identification information, obtain the enveloping rectangle frame of the target vehicle body according to the body size, calculate the coordinate information of the vertex A whose distance between the enveloping rectangle frame and the vehicle is the closest, when the vertex A is located in the lamp unit In the high beam irradiation area, the control unit generates a control command and sends it to the vehicle lamp unit.

Preferably, the control unit is configured to calculate the entry angle β of the target vehicle according to the coordinate information, and when the entry angle β is smaller than the high beam irradiation angle α of the lamp unit, the vertex A is located at the high beam illumination area; the entry angle β is the angle formed by the connection line between the vertex A and the vehicle lamp unit and the running direction of the vehicle.

Preferably, the identification information further includes the azimuth angle and traveling speed of the target vehicle; the control unit is configured to predict the traveling trajectory of the target vehicle according to the azimuth angle and traveling speed of the target vehicle; When the vertex A and/or the driving trajectory is located in the high beam irradiation area, the control unit generates a control command and sends it to the vehicle lamp unit.

Preferably, when the target vehicle is located in the high beam irradiation area, the control module is configured to generate a first control command and send it to the vehicle lamp unit, and the lighting mode of the vehicle lamp unit is adjusted to non-high beam illumination mode; when the target vehicle leaves the high beam illumination area, the control module is configured to generate a second control command and send it to the vehicle lamp unit, and the illumination mode of the vehicle lamp unit returns to the vehicle Lighting pattern before light control unit adjustment.

In another aspect of the present invention, there is also provided a vehicle lamp control method, including acquiring identification information of a target vehicle; generating corresponding control information according to the identification information of the target vehicle; adjusting the lighting of the vehicle lamp according to the control information model.

Preferably, the identification information of the target vehicle is obtained by using an angular radar.

Preferably, the identification information includes distance information from the target vehicle, an azimuth angle, and a body size of the target vehicle; an enveloping rectangular frame of the body of the target vehicle is obtained according to the body size, and the enveloping rectangular frame is calculated Coordinate information of the vertex A closest to the vehicle; according to the coordinate information, determine whether the target vehicle is located in the high beam irradiation area of the headlight, and when the vertex A is located in the high beam irradiation area, generate a control instruction ; According to the control information, adjust the lighting mode of the headlights.

Preferably, judging whether the target vehicle is located in the high beam irradiation area of the headlight according to the coordinate information includes: calculating the entry angle β of the target vehicle, when the entry angle β is smaller than the high beam irradiation of the lamp unit When the angle is α, it is determined that the vertex A is located in the high beam irradiation area; the entry angle β is the angle formed by the connecting line between the vertex A and the lamp unit and the driving direction of the vehicle.

Preferably, the identification information further includes the azimuth angle and driving speed of the target vehicle; according to the azimuth angle and driving speed of the target vehicle, the driving trajectory of the target vehicle is predicted; according to the coordinate information of the vertex A and /or the travel trajectory, to determine whether the target vehicle is located in the high beam irradiation area.

Preferably, when the target vehicle is located in the high beam irradiation area, a first control command is generated, and the lighting mode of the lamp unit is adjusted to a non-high beam irradiation mode; when the target vehicle leaves the high beam irradiation area , a second control instruction is generated, and the lighting mode of the vehicle lamp unit is restored to the lighting mode before adjustment.

The present invention also discloses a vehicle, comprising any of the above-mentioned vehicle lamp control systems.

After adopting the above-mentioned technical scheme, compared with the prior art, it has the following beneficial effects:

1. The present invention can complete the judgment of the target vehicle entering the high-beam irradiated area only by the radar, without the need of the rear radar or the camera, and the system structure is simpler.

2. The present invention adopts the method of detecting the entry angle of the target vehicle to judge whether the lighting mode of the vehicle lamp needs to be adjusted, which is more flexible and accurate.

3. The present invention judges whether the normal lighting mode of the vehicle can be restored according to the distance of the target vehicle, which further ensures the normal driving of the vehicle.

Description of drawings

FIG. 1 is a schematic diagram of a vehicle lamp control system according to an embodiment of the present invention;

2 is a schematic diagram of another vehicle lamp control system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of another vehicle lamp control system according to an embodiment of the present invention;

4 is a schematic diagram of another vehicle lamp control system according to an embodiment of the present invention;

FIG. 5 is a flowchart of a vehicle lamp control method according to an embodiment of the present invention;

FIG. 6 is a flowchart of another vehicle lamp control method according to an embodiment of the present invention.

Detailed ways

The advantages of the present invention are further described below with reference to the accompanying drawings and specific embodiments.

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as recited in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

In the following description, suffixes such as 'module', 'component' or 'unit' used to represent elements are used only to facilitate the description of the present invention, and have no specific meaning per se. Therefore, "module" and "component" can be used interchangeably.

FIG. 1 is a schematic diagram of an embodiment of a vehicle lamp control system according to the present invention, which includes a detection unit, a control unit and a vehicle lamp unit. The detection unit is used to obtain the identification information of the target vehicle, and send the identification information of the target vehicle to the control unit; the control unit is used to receive the identification information, and generate a control instruction according to the identification information, and send it to the control unit. The vehicle lamp unit; the vehicle lamp unit is used to adjust the lighting mode of the vehicle lamp unit according to the control instruction. That is, the system can autonomously adjust the lighting mode of the vehicle according to the identification information of the target vehicle to further ensure driving safety.

FIG. 2 is a schematic diagram of another embodiment of a vehicle lamp control system according to the present invention. In this embodiment, the detection units are front-angle radars respectively located on both sides of the front of the vehicle, relying on the front-angle radar to obtain the identification information of the target vehicle, and the target vehicle refers to a vehicle on the same road as the vehicle. vehicle. Moreover, the front angle radar can not only be installed on the outside of the vehicle bumper alone, but also can be integrated with other devices.

In this embodiment, the control unit is the MCU unit of the vehicle, but in other embodiments, it may be other controllers with lighting control functions. The present invention is not specifically limited herein. In this embodiment, the identification information of the target vehicle can be obtained without the aid of other hardware, such as a camera, a rear corner radar, etc., and the target vehicle can be judged by using the information obtained by the front corner radar of the existing hardware device in the vehicle driving status, etc. From another point of view, the cost of production is reduced, the conditions for information judgment are also reduced, and the driving state of the vehicle can be adjusted more flexibly.

Preferably, in another embodiment of the vehicle lamp control system according to the present invention, the identification information of the target vehicle includes distance information of the target vehicle, azimuth angle, and body size of the target vehicle. According to the body size, azimuth and distance information of the target vehicle, the control unit can obtain the body envelope rectangle of the target vehicle. Referring to FIG. 3 , it can be seen that the body enveloping rectangular frame is a rectangular frame enveloping the outermost contour of the vehicle, that is, in this embodiment, the outer contour of the target vehicle is simplified to an enveloping rectangular frame, and according to the envelope The relative position of the target vehicle and the own vehicle is determined by the position of the rectangular frame.

It is known in the art that, according to the properties of the firmware of the high beam of a vehicle, it usually has a relatively fixed high beam irradiation area, and the high beam irradiation area here is the area that the high beam can illuminate. In this area, due to the high intensity of the light, if it is directly directed at the human eye or reflected in the rearview mirror of the vehicle in front, it will produce a dazzling effect. When dazzling is caused, the driver cannot make a timely and accurate judgment on the current road conditions, which brings certain safety hazards. Therefore, when the target vehicle is in the high-beam irradiation area of the headlight unit, if the vehicle's headlight unit is in the high-beam irradiation mode, the irradiation mode needs to be adjusted to a non-high-beam irradiation mode, such as a low-beam irradiation mode, etc. . It can be understood that the determination of the current illumination mode of the vehicle lamp unit is included here, and any common determination method in the art may be used, which is not described in detail in the present invention. As shown in FIG. 3 , the shaded portion at the front of the host vehicle is the high beam irradiation area.

In this embodiment, it is determined whether the target vehicle has entered the high beam irradiation area of the headlight unit according to the coordinate information of the vertex A that is the closest distance between the envelope rectangle and the vehicle. When the vertex A is located in the high beam irradiation area of the vehicle lamp unit, the control unit generates a control command and sends it to the vehicle lamp unit. The vehicle lamp unit will switch the lighting mode to or maintain the current non-high beam irradiation mode according to the control instruction.

Preferably, in another embodiment of the vehicle lamp control system according to the present invention, as shown in FIG. 4 , whether the target vehicle enters the high beam irradiation area of the vehicle is determined according to the entry angle β of the target vehicle. Specifically, the high beam irradiation angle α of the vehicle lamp unit is a parameter that has been determined during the design of the vehicle lamp, and the high beam irradiation area of the vehicle lamp unit can be determined accordingly. When the entry angle β of the target vehicle is smaller than the high beam irradiation angle α of the headlight unit, it is considered that the vertex A is located in the high beam irradiation area, and the entry angle β is the vertex A and the high beam irradiation area. The angle formed between the connection lines of the lamp units and the driving direction of the vehicle.

Since the relative position of the target vehicle and the vehicle changes rapidly during the driving process of the vehicle, the detection frequency of the detection unit cannot be completely covered. Moreover, considering the target detection, signal transmission, system execution operation and necessary anti-shake, certain time, and the specific time is the value determined by the light control system. Therefore, in practical situations, it is necessary to predict the motion trajectories of the own vehicle and the target vehicle based on the total system time. In another preferred embodiment of the present invention, the identification information detected by the detection unit further includes the azimuth angle and traveling speed of the target vehicle; the control unit predicts the target vehicle according to the azimuth angle and traveling speed of the target vehicle. The driving trajectory of the target vehicle; when the vertex A and/or the driving trajectory is located in the high beam irradiation area, the control unit generates a control command and sends it to the vehicle lamp unit.

Wherein, the traveling track is the traveling route of the target vehicle within the first time range while maintaining the current azimuth angle and traveling speed. The predicted driving trajectory can be the basis for judging whether the target vehicle will enter the high beam irradiation area, and the first time range is the sum of the time required for the detection signal of the detection unit, the signal transmission and the execution of the operation by the control unit, and the specific time value can also be Adjust according to the actual situation. Therefore, the technical solution for judging whether the target vehicle enters the high-beam irradiation area in this embodiment includes three parallel judgment bases:

(1) When the vertex A is located in the high beam irradiation area, determine that the target vehicle enters the high beam irradiation area;

(2) when the driving track is located in the high beam irradiation area, determine that the target vehicle enters the high beam irradiation area;

(3) When the vertex A is located in the high beam irradiation area and the travel trajectory is located in the high beam irradiation area, it is determined that the target vehicle enters the high beam irradiation area.

The specific judgment basis can be selected according to actual needs. For example, when the road conditions are complex and the demand for safe driving is high, and the prediction of the driving trajectory of the target vehicle is more important, the third technical solution can be selected. When the road is wider and the number of vehicles is small, the first technical solution can be selected. The present invention is not specifically limited herein.

Preferably, in order to ensure the driving safety of the vehicle, after the target vehicle leaves the high beam irradiation area of the vehicle, the illumination mode of the lamp unit should be restored to the light illumination mode before adjustment. In a preferred embodiment of the present invention, when the target vehicle enters the high beam irradiation area, the control module is configured to generate a first control command and send it to the vehicle lamp unit, where the The lighting mode is adjusted to a non-high beam irradiation mode; when the target vehicle leaves the high beam irradiation area, the control module is configured to generate a second control command and send it to the vehicle lamp unit, where the The lighting mode is restored to the lighting mode before the adjustment by the vehicle lamp control unit. In this embodiment, when the distance between the target vehicle and the vehicle is greater than the farthest irradiation range of the high beam irradiation area, it is determined that the target vehicle leaves the high beam irradiation area.

For example, if the current vehicle determines that when the vertex A leaves the high beam irradiation area, the control module sends a second control command to the headlight unit, and the light irradiation mode of the headlight unit before adjustment is high beam irradiation mode, the lamp unit will return the illumination mode to the high beam illumination mode.

It should be understood that the premise of judging whether the target vehicle has driven out of the high beam irradiation area is that the target vehicle has entered the high beam irradiation area, that is, the detection unit continues to detect the identification information of the target vehicle entering the high beam irradiation area until the target vehicle enters the high beam irradiation area. It leaves the high beam area.

Therefore, according to the above description, the vehicle lamp control system in the present invention can more flexibly adjust the lighting mode of the current vehicle, and can provide a guarantee for the safe driving of the vehicle.

In an embodiment consistent with the present invention, a vehicle lamp control method is provided. As shown in FIG. 5 , the vehicle lamp control method in this embodiment includes the following steps:

S1: Obtain the identification information of the target vehicle;

S2; generate corresponding control information according to the identification information of the target vehicle;

S3: According to the control information, adjust the lighting mode of the vehicle lamp.

Embodiments of other vehicle lamp control methods have the same technical features as the above-mentioned vehicle lamp control system, which will not be described in detail in the present invention.

For example, as shown in FIG. 6, it is a vehicle lamp control method of a preferred embodiment of the present invention. Include the following steps:

The identification information of the target vehicle is acquired, and the identification information includes the distance information to the target vehicle, the body size of the target vehicle, the azimuth angle and the traveling speed of the target vehicle.

According to the azimuth angle and the traveling speed of the target vehicle, the traveling trajectory of the target vehicle is predicted.

The envelope rectangle of the target vehicle body is obtained according to the body size, and the coordinate information of the vertex A closest to the distance between the envelope rectangle and the vehicle is calculated.

According to the coordinate information of the vertex A, determine whether the vertex A is located in the high beam irradiation area, that is, determine whether the target vehicle is located in the high beam irradiation area:

If vertex A is not located in the high beam irradiation area, keep the current lighting mode of the lighting unit;

If vertex A is located in the high-beam irradiation area, generate a first control instruction to adjust the lighting mode of the vehicle lamp unit to a non-high-beam irradiation mode; and continue to determine whether the target vehicle leaves the high-beam irradiation area:

If the target vehicle leaves the high beam irradiation area, a second control command is generated, and the lighting mode of the lamp unit returns to the lighting mode before adjustment; if it does not leave, the identification information of the target vehicle is continuously detected.

Another embodiment of the present invention includes a vehicle including the above-mentioned vehicle lamp control system.

It can be seen from the above embodiments that the present invention can complete the judgment of the target vehicle entering the high beam irradiation area only by the radar, without the need of the rear radar or the camera, and the system structure is simpler. The invention adopts the method of detecting the entry angle of the target vehicle to judge whether the lighting mode of the headlight needs to be adjusted, which is more flexible and accurate, and at the same time judges whether the normal lighting mode of the vehicle can be restored according to the distance of the target vehicle, further ensuring the normal driving of the vehicle.

It should be noted that the embodiments of the present invention have better practicability, and do not limit the present invention in any form, and any person skilled in the art may use the technical contents disclosed above to change or modify into equivalent effective embodiments However, any modifications or equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims (13)

1. A vehicle lamp control system is characterized by comprising a detection unit, a control unit and a vehicle lamp unit;

the detection unit is used for acquiring the identification information of a target vehicle and sending the identification information of the target vehicle to the control unit;

the control unit is used for receiving the identification information, generating a control instruction according to the identification information and sending the control instruction to the car light unit;

the car light unit is used for adjusting the lighting mode of the car light unit according to the control instruction.

2. The vehicular lamp control system according to claim 1,

the detection unit is a front angle radar.

3. The vehicular lamp control system according to claim 1,

the detection unit is used for detecting identification information of the target vehicle, wherein the identification information comprises distance information and an azimuth angle of the target vehicle and a body size of the target vehicle;

the control unit is used for receiving the identification information, obtaining an envelope rectangular frame of a target vehicle body according to the size of the vehicle body, calculating coordinate information of a vertex A of the envelope rectangular frame, which is closest to the vehicle, and when the vertex A is located in a high beam irradiation area of the vehicle lamp unit, the control unit generates a control instruction and sends the control instruction to the vehicle lamp unit.

4. The vehicular lamp control system according to claim 3,

the control unit is used for calculating an entrance angle beta of the target vehicle according to the coordinate information, and when the entrance angle beta is smaller than a high beam irradiation angle alpha of the vehicle lamp unit, the vertex A is positioned in the high beam irradiation area;

the entrance angle beta is an included angle formed by a connecting line between the vertex A and the car lamp unit and the driving direction of the car.

5. The vehicular lamp control system according to claim 4,

the identification information further includes an azimuth angle and a traveling speed of the target vehicle;

the control unit is used for predicting the running track of the target vehicle according to the azimuth angle and the running speed of the target vehicle;

and when the vertex A and/or the driving track are/is positioned in the high beam irradiation area, the control unit generates a control instruction and sends the control instruction to the vehicle lamp unit.

6. The vehicular lamp control system according to claim 5,

when the target vehicle is located in the high beam irradiation region, the control module is used for generating a first control instruction and sending the first control instruction to the vehicle lamp unit, and the illumination mode of the vehicle lamp unit is adjusted to a non-high beam irradiation mode;

when the target vehicle leaves the high beam irradiation region, the control module is used for generating a second control instruction and sending the second control instruction to the vehicle lamp unit, and the illumination mode of the vehicle lamp unit is restored to the light irradiation mode before the vehicle lamp control unit adjusts the illumination mode.

7. A control method for a vehicle lamp is characterized in that,

acquiring identification information of a target vehicle;

generating corresponding control information according to the identification information of the target vehicle;

and adjusting the lighting mode of the vehicle lamp according to the control information.

8. The vehicular lamp control method according to claim 7,

identification information of the target vehicle is acquired using a front angle radar.

9. The vehicular lamp control method according to claim 7,

the identification information comprises distance information and an azimuth angle of the target vehicle and a body size of the target vehicle;

obtaining an envelope rectangular frame of a target vehicle body according to the size of the vehicle body, and calculating coordinate information of a vertex A of the envelope rectangular frame, which is closest to the vehicle;

judging whether the target vehicle is positioned in a high beam irradiation area of a vehicle lamp or not according to the coordinate information, and generating a control instruction when the vertex A is positioned in the high beam irradiation area;

and adjusting the lighting mode of the vehicle lamp according to the control information.

10. The vehicular lamp control method according to claim 9,

judging whether the target vehicle is positioned in a high beam irradiation area of a vehicle lamp according to the coordinate information comprises the following steps:

calculating an entrance angle beta of the target vehicle, and determining that the vertex A is positioned in the high beam light irradiation area when the entrance angle beta is smaller than a high beam light irradiation angle alpha of the vehicle lamp unit;

the entrance angle beta is an included angle formed by a connecting line between the vertex A and the car lamp unit and the driving direction of the car.

11. The vehicular lamp control method according to claim 10, further comprising:

the identification information further includes an azimuth angle and a traveling speed of the target vehicle;

predicting the running track of the target vehicle according to the azimuth angle and the running speed of the target vehicle;

and judging whether the target vehicle is positioned in the high beam irradiation area or not according to the coordinate information of the vertex A and/or the driving track.

12. The vehicular lamp control method according to claim 11,

when the target vehicle is positioned in the high beam irradiation area, generating a first control instruction, and adjusting the illumination mode of the vehicle lamp unit to a non-high beam irradiation mode;

and when the target vehicle leaves the high beam irradiation area, generating a second control instruction, and recovering the illumination mode of the vehicle lamp unit to the light irradiation mode before adjustment.

13. A vehicle comprising a lamp control system according to any one of claims 1 to 6.

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