A vehicle light control method, device and vehicle based on UWB positioning

Abstract

The present invention relates to a vehicle light control method based on UWB positioning, comprising: determining a driver's current location based on UWB vehicle key location information; judging whether to turn on a preset vehicle light follow-up control function based on the driver's current location; if it is determined to be turned on, judging whether the driver's movement trend is a trend of approaching a vehicle or a trend of moving away from the vehicle; when the driver's movement trend is a trend of approaching the vehicle and the driver is in a predetermined area on the front side of the vehicle, determining one or more groups of target light beams that can illuminate the driver's location based on the driver's position, and controlling the headlights corresponding to the one or more groups of target light beams to turn on according to a first predetermined control mode; when the driver's movement trend is a trend of moving away from the vehicle and the driver is in a predetermined area on the front side of the vehicle, determining one or more groups of target light beams that can illuminate the driver's location based on the driver's position, and controlling the headlights corresponding to the one or more groups of target light beams to turn on according to a second predetermined control mode.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile headlight electronic control, and in particular to a method and device for controlling automobile headlights based on UWB positioning, and an automobile. Background Art

[0002] As the development trend of automobile intelligence, the "accompany me home" function has gradually become a standard feature of passenger cars, but many are limited to headlights or start the headlights and taillights at the same time and delay turning them off for a period of time (15s, 30s, 45s) for the driver to leave. As an upgrade of traditional headlights and a reduction in costs, more and more high-end models are beginning to be equipped with ADB (matrix) headlight systems. The current ADB headlights are mainly used for driving safety purposes, automatically turning on and off light zones based on obstacle information, and are not yet used in the "accompany me home" mode.

[0003] Ultra Wide Band (UWB) technology is an ultra-wideband wireless technology that communicates through weak pulse signals. It has strong penetration, low power consumption, high security, and its ranging accuracy reaches the centimeter level. UWB positioning is currently the most accurate indoor positioning and is widely used for indoor short-range target positioning and tracking. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned shortcomings of the existing accompany-me-home mode and to propose a method with an accompany-me-home function that automatically activates the headlights and / or taillights by determining the direction in which the driver is leaving or approaching the vehicle.

[0005] The technical solution of the present invention is:

[0006] The present invention provides a vehicle light control method based on UWB positioning, comprising:

[0007] Based on the obtained area where the driver is currently located, determining whether to turn on the preset follow-up control function of the headlights; the obtained area where the driver is currently located is determined solely based on the location information of the UWB car key of the vehicle, or is determined jointly based on the location information of the UWB car key of the vehicle and the image outside the vehicle collected by the camera;

[0008] If it is determined that the preset vehicle light follow-up control function is turned on, it is determined whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle;

[0009] Regardless of whether the driver's movement trend is toward or away from the vehicle, when the driver is in the predetermined area on both sides of the vehicle, the side lights on the corresponding side are turned on;

[0010] Regardless of whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle, when the driver is in a predetermined area behind the vehicle, turning on the vehicle's taillights;

[0011] When the driver's movement trend is a trend of approaching the vehicle and the driver is in a predetermined area in front of the vehicle, one or more groups of target light beams that can illuminate the driver's position are determined based on the driver's position, and the headlights corresponding to the one or more groups of target light beams are controlled to turn on according to a first predetermined control method;

[0012] When the driver's movement trend is away from the vehicle and the driver is in a predetermined area in front of the vehicle, one or more groups of target light beams that can illuminate the driver's position are determined based on the driver's position, and the headlights corresponding to the one or more groups of target light beams are controlled to turn on according to a second predetermined control method.

[0013] Preferably, the step of controlling the headlights corresponding to one or more groups of target light beams to turn on according to the first predetermined control mode includes:

[0014] Selecting at least one set of headlights corresponding to the one or more sets of target light beams that will not directly hit the driver's eyes and turning on the headlights, or adjusting the brightness of the headlights corresponding to the one or more sets of target light beams to the lowest level;

[0015] The step of controlling the headlights corresponding to one or more groups of target light beams to turn on according to the second predetermined control mode comprises:

[0016] The headlights corresponding to a group of target light beams with the smallest brightness or the smallest power consumption are controlled to be turned on, or the headlights corresponding to all groups of target light beams are controlled to be turned on.

[0017] Preferably, the step of selecting at least one group of target light beams that will not directly hit the driver's eyes from one or more groups of target light beams comprises:

[0018] The driver's sight area identified by the face recognition device based on the image outside the vehicle captured by the camera, or the driver's head area identified by the human body recognition device based on the image outside the vehicle captured by the camera is used as the target area that will not directly illuminate the driver's eyes, and then the light beam that can illuminate the target area is removed, and the remaining light beam is used as the target light beam.

[0019] Preferably, the method further comprises: when the movement trend of the driver is a trend of approaching the vehicle, if the driver enters within a predetermined unlocking area, controlling the vehicle to unlock;

[0020] When the driver's movement trend is to move away from the vehicle, if the driver enters the predetermined unlocking area from an ignition area closer to the vehicle than the predetermined unlocking area, the vehicle is controlled to be locked;

[0021] The predetermined unlocking area is composed of the front predetermined area, the driver side predetermined area, the passenger side predetermined area and the rear predetermined area of ​​the vehicle, and the area whose distance from the center of the vehicle is between the first predetermined distance and the second predetermined distance;

[0022] The ignition area is an area within a first predetermined distance range from the center of the vehicle.

[0023] Preferably, the illumination range of the corner lamp in the left headlight assembly of the vehicle is: a range between 50° and 20° rotated leftward from the center line of the left headlight assembly along the X direction of the vehicle;

[0024] The illumination range of the corner lamp in the right headlight assembly of the vehicle is: the range between 20° and 50° rotated rightward along the center line of the vehicle in the X direction;

[0025] The illumination range of the high beam and low beam in the left headlight assembly of the vehicle is: the range between 20° to the left and 20° to the right from the center line of the left headlight assembly along the X direction of the vehicle;

[0026] The illumination range of the high beam and low beam in the right headlight assembly of the vehicle is: from the center line of the right headlight assembly along the X direction of the vehicle to the left 20° to the right 20°.

[0027] Preferably, the illumination range of the corner lamp in the left headlight assembly of the vehicle is: a range between 50° and 20° rotated leftward from the center line of the left headlight assembly along the X direction of the vehicle;

[0028] The illumination range of the corner lamp in the right headlight assembly of the vehicle is: the range between 20° and 50° rotated rightward along the center line of the vehicle in the X direction;

[0029] The illumination range of the high beam and low beam in the left headlight assembly of the vehicle is: the range between 20° to the left and 20° to the right from the center line of the left headlight assembly along the X direction of the vehicle;

[0030] The illumination range of the high beam and low beam in the right headlight assembly of the vehicle is: from the center line of the right headlight assembly along the X direction of the vehicle to the left 20° to the right 20°.

[0031] The present invention also provides a vehicle light control device based on UWB positioning, comprising:

[0032] A first judgment module is used to judge whether to turn on a preset car light follow-up control function based on the obtained area where the driver is currently located; the obtained area where the driver is currently located is determined solely based on the location information of the UWB car key of the vehicle, or is determined jointly based on the location information of the UWB car key of the vehicle and the image outside the vehicle collected by the camera;

[0033] The second judgment module is used to judge whether the driver's movement trend is approaching the vehicle or moving away from the vehicle if it is determined that the preset vehicle light follow-up control function is turned on;

[0034] Control module, including:

[0035] A first control unit is used for turning on the side lights on the corresponding sides when the driver is in a predetermined area on both sides of the vehicle, regardless of whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle;

[0036] a second control unit, configured to turn on the vehicle taillights when the driver is in a predetermined area behind the vehicle, regardless of whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle;

[0037] a third control unit, configured to, when the driver's movement tendency is a tendency to approach the vehicle and the driver is in a predetermined area in front of the vehicle, determine one or more groups of target light beams that can illuminate the position of the driver based on the driver's position, and control the headlights corresponding to the one or more groups of target light beams to turn on according to a first predetermined control method;

[0038] a fourth control unit, for determining, based on the position of the driver, one or more groups of target light beams that can illuminate the position of the driver when the driver's movement trend is away from the vehicle and the driver is in a predetermined area in front of the vehicle, and controlling the headlights corresponding to the one or more groups of target light beams to turn on according to a second predetermined control method.

[0039] The present invention also provides a car, comprising the above-mentioned car light control device based on UWB positioning.

[0040] The beneficial effects of the present invention are:

[0041] The accompanying light control function provided by the present invention significantly improves the sense of ceremony and technology of welcoming and seeing off guests in the vehicle, and improves the overall intelligence level of the vehicle equipped with the UWB car key.

[0042] When the headlight follow-up control function is turned on, the corresponding side position lights are automatically turned on according to the UWB positioning of the driver, improving the user experience; and when the headlights are controlled, only some functional areas are lit, which can save the car battery power to a certain extent and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 Schematic diagram of three areas in UWB positioning in an embodiment of the present invention;

[0045] Figure 2 Schematic diagram for explaining the lighting area when the ADB headlight is in the welcome mode in an embodiment of the present invention;

[0046] Figure 3 This is a flowchart of the follow-up control of the headlights when the driver is away from the vehicle in an embodiment of the present invention;

[0047] Figure 4 This is a flowchart of the follow-up control of the headlights when the driver approaches the vehicle in an embodiment of the present invention;

[0048] Figure 5 4 is a block diagram of a vehicle light follow-up control device in an embodiment of the present invention. DETAILED DESCRIPTION

[0049] 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.

[0050] See also Figure 1 The embodiment of the present invention divides the area surrounding the vehicle into a front predetermined area, a rear predetermined area, a driver's side predetermined area, and a passenger's side predetermined area.

[0051] Specifically, the area divided by the angle of 50° outside the left headlight and the right headlight is the front predetermined area, the area divided by the angle of 45° outside the left taillight and the right taillight is the rear predetermined area, and the remaining areas are the driver's side predetermined area and the passenger's side predetermined area. Among them, the front predetermined area, the rear predetermined area, the driver's side predetermined area and the passenger's side predetermined area constitute the welcome area described later in this embodiment.

[0052] Furthermore, the front predetermined area and the rear predetermined area divided by the headlight and the taillight should be divided according to the maximum luminous angle of the inner and outer sides of the lamp module.

[0053] Specifically, Figure 1, with the center of the vehicle as the center, the radius of 0.5m (first predetermined distance) is the ignition area, and the circular area with a radius of 0.5m (first predetermined distance)-1m (second predetermined distance) is the predetermined unlocking area. In this embodiment, the front side predetermined area, the rear side predetermined area, the driver side predetermined area and the passenger side predetermined area include the aforementioned predetermined unlocking areas. In addition, the radius of the ignition area can be set within the range of 0.5m-1m, and the unlocking area can also be appropriately expanded.

[0054] The embodiment of the present invention provides a vehicle light control system based on UWB positioning, including a plurality of cameras all connected to the electronic controller ECU signal, a UWB vehicle key and a plurality of UWB positioning devices on the vehicle body, and vehicle lamps (the vehicle headlights in this embodiment are equipped with an ADB or DLP system that supports zone lighting). The UWB positioning devices are arranged at intervals around the vehicle, and the electronic controller ECU is electrically connected to the vehicle lights.

[0055] The camera can be set to one, arranged at the front end of the vehicle, such as the front windshield of the vehicle. The camera can also be set to four, arranged at the front end of the vehicle, the rear end of the vehicle, the left side of the vehicle and the right side of the vehicle.

[0056] The number of UWB positioning devices can be set to 5, one is arranged inside the vehicle or integrated with the electronic controller ECU, and the other two are arranged on the left side of the front end of the vehicle, the right side of the front end of the vehicle, the left side of the rear end of the vehicle, and the right side of the rear end of the vehicle. The electronic controller ECU can perform data fusion comparison based on the data provided by the camera and the UWB positioning device to determine the location of the car key and the driver's location. Among them, the specific principle of locating the position of the UWB car key based on the camera acquisition data and the UWB positioning device data is an existing technology.

[0057] The embodiment of the present invention utilizes the above system to execute the following vehicle light control method. The camera and UWB positioning device detect the direction of the driver's departure / approach, and transmit the detection information obtained by the positioning judgment module to the electronic controller ECU. When the driver's position is within the effective range of the welcome area, the electronic controller ECU turns on the vehicle light follow-up control function and controls the corresponding headlights, taillights, left lights, and right lights based on the driver's position. When the driver walks out of the welcome area, the system is turned off with a delay; or, after the driver enters the predetermined ignition area, the system automatically turns off the vehicle light follow-up control function.

[0058] When the driver is in a predetermined area at the rear of the vehicle, the electronic controller ECU controls the rear lights to light up the functional areas corresponding to the driver's position.

[0059] Furthermore, when the driver is in the predetermined area on the driver's side or the predetermined area on the passenger's side in front of the vehicle, the electronic controller ECU controls the headlights on the corresponding side to light up the corresponding area of ​​the driver's position.

[0060] Furthermore, when the driver is far away from the vehicle, the normal brightness of the headlight on the corresponding side is lit to illuminate the road ahead for the driver. When the driver is approaching the vehicle, the brightness of the headlight on the corresponding side is reduced to provide instructions for the driver to approach the vehicle.

[0061] Specifically, when the driver's movement trend is towards the vehicle and the driver is in the predetermined area on the front side of the vehicle, one or more groups of target light beams that can illuminate the driver's position are determined based on the driver's position, and the headlights corresponding to at least one group of target light beams that will not directly shine into the driver's eyes are selected from the one or more groups of target light beams to be turned on, or the brightness of the headlights corresponding to one or more groups of target light beams are adjusted to the lowest gear; when the driver's movement trend is away from the vehicle and the driver is in the predetermined area on the front side of the vehicle, one or more groups of target light beams that can illuminate the driver's position are determined based on the driver's position, and the headlights corresponding to the group of target light beams with the smallest brightness or the smallest power consumption are controlled to be turned on, or the headlights corresponding to all groups of target light beams are controlled to be turned on.

[0062] The step of selecting at least one group of target light beams that will not directly hit the driver's eyes from one or more groups of target light beams includes:

[0063] The driver's sight area identified by the face recognition device based on the image outside the vehicle captured by the camera, or the driver's head area identified by the human body recognition device based on the image outside the vehicle captured by the camera is used as the target area that will not directly illuminate the driver's eyes, and then the light beam that can illuminate the target area is removed, and the remaining light beam is used as the target light beam.

[0064] In this embodiment, after the above-mentioned headlight follow-up control function is turned on, the working mode of the headlight is as follows: Figure 2 , for example:

[0065] Step 1: When the driver leaves the vehicle and is within the illumination range of the corner lamp beam in the predetermined area on the front side, the corner lamp in the headlamp on the corresponding side lights up to provide lighting for the driver;

[0066] Step 2: When the driver leaves the corner lamp area and is in the lighting area of ​​one or more light beams of the headlamp on the corresponding side, the corresponding one or more light zones are controlled to light up to illuminate the driver's position; if the driver is more than 5m in front of the vehicle, the headlamp on the corresponding side lights up one light zone to illuminate the driver's position.

[0067] Step 3: When the driver leaves the welcome area, the UWB positioning device cannot receive the UWB car key information, so the car light follow-up control function is exited.

[0068] Figure 2 For example, the corresponding side headlight is divided into 6 groups of light beams according to the headlight inside and outside angle of 50°, the driver width of 0.6m, and 5m in front of the vehicle. According to the corresponding headlight scheme and according to the needs of implementation, the various steps / components / values ​​described in this application can be split into more steps / components / values, and two or more steps / components / values ​​or partial operations of steps / components / values ​​can be combined into new steps / components / values ​​to achieve the purpose of the present invention.

[0069] See also Figure 3 In the present invention, a specific implementation method of using the above system to control the headlights when the driver is leaving the vehicle is as follows:

[0070] Step 101: The UWB positioning device determines whether the UWB car key is in a displacement or vibration state. If the UWB car key is in a displacement or vibration state, the UWB positioning device establishes a connection with the electronic controller ECU and proceeds to step 102; if the UWB car key is not in a displacement or vibration state, the process ends;

[0071] Step 102: The UWB positioning device determines the position of the UWB car key. If it is in the predetermined ignition area, the electronic controller ECU controls the vehicle light follow-up control function not to start; if it is in the predetermined unlocking area, the electronic controller ECU controls the vehicle to automatically lock, starts the vehicle light follow-up control function, and then reads the position recognition result of the UWB car key of the UWB positioning device; if the UWB car key is in the predetermined front area, then go to step 103; if the UWB car key is in the predetermined rear area, then go to step 104; if the UWB car key is in the predetermined area of ​​the driver's side\passenger side, then go to step 105;

[0072] Furthermore, when the UWB car key leaves the predetermined ignition area and enters the predetermined unlocking area, the vehicle is automatically turned off; when the UWB car key leaves the predetermined unlocking area and enters the welcome area, the vehicle is automatically locked.

[0073] Step 103: If the UWB car key is in the front predetermined area, proceed to step 106;

[0074] Step 104: If the UWB car key is in the rear predetermined area, proceed to step 107;

[0075] Step 105: If the UWB car key is in the predetermined area on the driver's side or the passenger's side, proceed to step 108;

[0076] Step 106: according to the position change of the UWB car key, determine one or more groups of target light beams that can illuminate the position of the driver, and control the corresponding headlights or corner lights to light up, wherein the headlights are lit normally without reducing the brightness;

[0077] Step 107: According to the position change of the UWB car key, the corresponding functional partition of the taillight is lit or turned off;

[0078] Step 108: According to the position change of the UWB car key, the corresponding welcome light on the driver's side or the passenger's side is turned on or off;

[0079] Step 109: determining the positions of the UWB car key and the driver in real time, and when the driver is away from the welcome area, proceeding to step 110;

[0080] Step 110: Exit the vehicle headlight follow-up control function, and the corresponding lit lamps are turned off with a delay.

[0081] Reference Figure 4 The second specific implementation method of the present invention using the above system to control the headlights when the driver is close to the vehicle is:

[0082] Step 201: The UWB positioning device determines whether the UWB car key is in a displacement or vibration state. If the UWB car key is in a displacement or vibration state, the UWB positioning device establishes a connection with the electronic controller ECU and proceeds to step 202; if the UWB car key is not in a displacement or vibration state, the process ends;

[0083] Step 202: The UWB positioning device determines the position of the UWB car key. If it is in the welcome area, the electronic controller ECU starts the car light follow-up control function to determine the position of the UWB car key; if the UWB car key is in the predetermined area in front of the car, it goes to step 203; if it is in the predetermined area behind the car, it goes to step 204; if it is in the predetermined area on the driver's side or the co-driver's side, it goes to step 205;

[0084] Furthermore, when the UWB car key leaves the predetermined welcome area and enters the predetermined unlocking area, the vehicle is controlled to automatically unlock.

[0085] Step 203: If the UWB car key is in the predetermined area in front of the car, proceed to step 206;

[0086] Step 204: If the UWB car key is in the predetermined area behind the car, proceed to step 207;

[0087] Step 205: If the UWB car key is in the predetermined area on the driver's side or the passenger's side, proceed to step 208;

[0088] Step 206: according to the position change of the UWB car key, determine one or more groups of target light beams that can illuminate the position of the driver, and control the corresponding headlights or corner lights to light up, wherein the headlights are lit with reduced brightness to avoid causing discomfort to the driver; or, select at least one group of target light beams from the one or more groups of target light beams that will not directly illuminate the driver's eyes and turn on the headlights, or adjust the brightness of the headlights corresponding to the one or more groups of target light beams to the lowest gear;

[0089] Step 207: According to the position change of the UWB car key, the corresponding functional partition of the taillight is lit or turned off;

[0090] Step 208: According to the position change of the UWB car key, the corresponding welcome lights on the driver's side and the passenger's side are turned on or off;

[0091] Step 209: determining the position of the UWB car key and the driver in real time, and when they are far away from the welcoming area, proceeding to step 210;

[0092] Step 210: Exit the vehicle headlight follow-up control function, and the corresponding lit lamps are turned off with a delay.

[0093] It should be pointed out that, according to the needs of implementation, the various steps / components / values ​​described in this application can be split into more steps / components / values ​​according to the corresponding headlight scheme and according to the needs of implementation, and two or more steps / components / values ​​or partial operations of steps / components / values ​​can be combined into new steps / components / values ​​to achieve the purpose of the present invention.

[0094] Reference Figure 5 The present invention also provides a vehicle light control device based on UWB positioning, comprising:

[0095] The first judgment module 301 is used to judge whether to turn on the preset vehicle light follow-up control function based on the obtained area where the driver is currently located; the obtained area where the driver is currently located is determined solely based on the location information of the UWB car key of the vehicle, or is determined jointly based on the location information of the UWB car key of the vehicle and the image outside the vehicle collected by the camera;

[0096] The second judgment module 302 is used to judge whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle if it is determined that the preset vehicle light follow-up control function is turned on;

[0097] The control module 303 includes:

[0098] The first control unit 3031 is configured to turn on the side lights on the corresponding sides when the driver is in a predetermined area on both sides of the vehicle, regardless of whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle;

[0099] The second control unit 3032 is configured to turn on the taillights of the vehicle when the driver is in a predetermined area behind the vehicle, regardless of whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle;

[0100] The third control unit 3033 is used to determine one or more groups of target light beams that can illuminate the position of the driver based on the position of the driver when the driver's movement trend is a trend of approaching the vehicle and the driver is in a predetermined area in front of the vehicle, and control the headlights corresponding to the one or more groups of target light beams to turn on according to the first predetermined control mode;

[0101] The fourth control unit 3034 is used to determine a group or more groups of target light beams that can illuminate the driver's position based on the driver's position when the driver's movement trend is away from the vehicle and the driver is in a predetermined area in front of the vehicle, and control the headlights corresponding to the group or more groups of target light beams to turn on according to a second predetermined control method.

[0102] The present invention also provides a car, comprising the above-mentioned car light control device based on UWB positioning.

[0103] The accompanying light control function provided by the present invention significantly improves the sense of ceremony and technology of welcoming and seeing off guests in the vehicle, and improves the overall intelligence level of the vehicle equipped with the UWB car key.

[0104] When the headlight follow-up control function is turned on, the corresponding side position lights are automatically turned on according to the UWB positioning of the driver, improving the user experience; and when the headlights are controlled, only some functional areas are lit, which can save the car battery power to a certain extent and reduce energy consumption.

[0105] Those skilled in the art will easily understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle light control method based on UWB positioning, characterized in that: include: Based on the obtained area where the driver is currently located, determine whether to turn on the preset car light follow-up control function; The obtained area where the driver is currently located is determined solely based on the location information of the UWB car key of the vehicle, or is determined jointly based on the location information of the UWB car key of the vehicle and the image outside the vehicle collected by the camera; If it is determined that the preset vehicle light follow-up control function is turned on, it is determined whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle; Regardless of whether the driver's movement trend is toward or away from the vehicle, when the driver is in the predetermined area on both sides of the vehicle, the side lights on the corresponding side are turned on; Regardless of whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle, when the driver is in a predetermined area behind the vehicle, turning on the vehicle's taillights; When the driver's movement trend is a trend of approaching the vehicle and the driver is in a predetermined area in front of the vehicle, one or more groups of target light beams that can illuminate the driver's position are determined based on the driver's position, and the headlights corresponding to the one or more groups of target light beams are controlled to turn on according to a first predetermined control method; When the driver's movement trend is away from the vehicle and the driver is in a predetermined area in front of the vehicle, one or more groups of target light beams that can illuminate the driver's position are determined based on the driver's position, and the headlights corresponding to the one or more groups of target light beams are controlled to turn on according to a second predetermined control method.

2. The vehicle light control method based on UWB positioning according to claim 1, characterized in that: The step of controlling the headlights corresponding to one or more groups of target light beams to turn on according to the first predetermined control mode comprises: Selecting at least one set of headlights corresponding to the one or more sets of target light beams that will not directly hit the driver's eyes and turning on the headlights, or adjusting the brightness of the headlights corresponding to the one or more sets of target light beams to the lowest level; The step of controlling the headlights corresponding to one or more groups of target light beams to turn on according to the second predetermined control mode comprises: The headlights corresponding to a group of target light beams with the smallest brightness or the smallest power consumption are controlled to be turned on, or the headlights corresponding to all groups of target light beams are controlled to be turned on.

3. The vehicle light control method based on UWB positioning according to claim 2, characterized in that: The step of selecting at least one group of target light beams that will not directly hit the driver's eyes from one or more groups of target light beams comprises: The driver's sight area identified by the face recognition device based on the image outside the vehicle captured by the camera, or the driver's head area identified by the human body recognition device based on the image outside the vehicle captured by the camera is used as the target area that will not directly illuminate the driver's eyes, and then the light beam that can illuminate the target area is removed, and the remaining light beam is used as the target light beam.

4. The vehicle light control method based on UWB positioning according to claim 1, characterized in that: The method further comprises: When the driver's movement trend is to approach the vehicle, if the driver enters the predetermined unlocking area, the vehicle is controlled to unlock; When the driver's movement trend is to move away from the vehicle, if the driver enters the predetermined unlocking area from an ignition area closer to the vehicle than the predetermined unlocking area, the vehicle is controlled to be locked; The predetermined unlocking area is composed of the front predetermined area, the driver side predetermined area, the passenger side predetermined area and the rear predetermined area of ​​the vehicle, and the area whose distance from the center of the vehicle is between the first predetermined distance and the second predetermined distance; The ignition area is an area within a first predetermined distance range from the center of the vehicle.

5. The vehicle light control method based on UWB positioning according to claim 4, characterized in that: The illumination range of the corner lamp in the left headlight assembly of the vehicle is: the range between 50° and 20° rotated leftward from the center line of the left headlight assembly along the X direction of the vehicle; The illumination range of the corner lamp in the right headlight assembly of the vehicle is: the range between 20° and 50° rotated rightward along the center line of the vehicle in the X direction; The illumination range of the high beam and low beam in the left headlight assembly of the vehicle is: the range between 20° to the left and 20° to the right from the center line of the left headlight assembly along the X direction of the vehicle; The illumination range of the high beam and low beam in the right headlight assembly of the vehicle is: from the center line of the right headlight assembly along the X direction of the vehicle to the left 20° to the right 20°.

6. A vehicle light control device based on UWB positioning, characterized in that: include: A first judgment module, used to judge whether to turn on a preset vehicle light follow-up control function based on the obtained area where the driver is currently located; The obtained area where the driver is currently located is determined solely based on the location information of the UWB car key of the vehicle, or is determined jointly based on the location information of the UWB car key of the vehicle and the image outside the vehicle collected by the camera; The second judgment module is used to judge whether the driver's movement trend is approaching the vehicle or moving away from the vehicle if it is determined that the preset vehicle light follow-up control function is turned on; Control module, including: A first control unit is used for turning on the side lights on the corresponding sides when the driver is in a predetermined area on both sides of the vehicle, regardless of whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle; a second control unit, configured to turn on the vehicle taillights when the driver is in a predetermined area behind the vehicle, regardless of whether the driver's movement trend is a trend of approaching the vehicle or a trend of moving away from the vehicle; a third control unit, configured to, when the driver's movement tendency is a tendency to approach the vehicle and the driver is in a predetermined area in front of the vehicle, determine one or more groups of target light beams that can illuminate the position of the driver based on the driver's position, and control the headlights corresponding to the one or more groups of target light beams to turn on according to a first predetermined control method; a fourth control unit, for determining, based on the position of the driver, one or more groups of target light beams that can illuminate the position of the driver when the driver's movement trend is away from the vehicle and the driver is in a predetermined area in front of the vehicle, and controlling the headlights corresponding to the one or more groups of target light beams to turn on according to a second predetermined control method.

7. A car, characterized in that: Including the vehicle light control device based on UWB positioning as described in claim 6.

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