CN118306299A - Intelligent light control method and intelligent light control system - Google Patents

Abstract

The invention provides an intelligent light control method and an intelligent light control system. The intelligent light control method comprises the steps of detecting light conditions around a vehicle and distribution conditions of obstacles in the process of getting off of a person, and prompting the positions of the obstacles by controlling luminous changes of external vehicle lamps when the light conditions are lower than preset conditions. According to the intelligent light control method, the position conditions of the obstacles are prompted by detecting the light conditions and the obstacle distribution conditions around the outside of the vehicle and utilizing the change of the external lamps, so that the risk of the personnel getting off the vehicle due to the surrounding obstacles is reduced, the change of the external lamps is automatically carried out based on the detected conditions, and the intelligent light control effect of the vehicle in the process of getting off the vehicle by the personnel can be improved.

Description

Intelligent light control method and intelligent light control system

Technical Field

The invention relates to the technical field of automobile control, in particular to an intelligent light control method. In addition, the invention also relates to an intelligent light control system.

Background

Along with the continuous promotion of the intelligent level of car, in many existing motorcycle types, trigger light and open after the vehicle unblock or shutting to illuminate the automobile body front portion, make things convenient for personnel to pass in and out the vehicle.

However, the existing vehicle has only a simple front car light starting function, when the vehicle is parked, the vehicle head faces inwards, and when a person leaves towards the tail direction, good light irradiation cannot be obtained; the opening of the lamplight is too dead, the lamplight can not be fully utilized to illuminate the periphery, and the situation that peripheral obstacles collide with personnel is easily caused. Particularly in the case of poor ambient light, if there is an obstacle located in the path of opening the door, the obstacle may also risk damaging the door.

Meanwhile, the configuration on the existing vehicle is more and more rich, the external lamps of all parts such as a headlight, a side lamp, a reversing lamp and the like are complete, the configuration of detection devices such as a camera and a radar is also very rich, and the aim of improving the light control effect of the vehicle based on the existing rich configuration is fulfilled, so that the aim of improving the intelligent level of the vehicle is fulfilled, and the vehicle intelligent vehicle is an important direction which needs to be continuously researched and developed in the field of automobile intelligent.

Disclosure of Invention

In view of the above, the present invention aims to provide an intelligent light control method, so as to facilitate improving the intelligent light control effect of a vehicle during the process of getting off a person.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

An intelligent light control method comprises the steps of detecting light conditions around a vehicle and distribution conditions of obstacles in the process of getting off a person; and when the light condition is lower than the preset condition, prompting the position of the obstacle by controlling the luminous change of the external car lamp.

Further, the external car lamp comprises a front headlight, a side lamp and a back-up lamp, and a plurality of illumination zones are divided around the car; the plurality of illumination zones includes a front area illuminated by the headlight, a side area illuminated by the side lamp, and a rear area illuminated by the backup lamp; prompting the location of the obstacle includes: the external car lamp adopts a digital headlight, so that the local area in the illumination zone can be enhanced and irradiated; and before the person gets off, the illumination partition where the obstacle is located is lightened, and the position or the direction where the obstacle is located is enhanced and irradiated.

Further, after the person gets off, detecting the position of the person, lighting the illumination zone where the position of the person is located, and performing enhanced irradiation on the position where the person is located.

Further, when a plurality of persons get off the vehicle simultaneously, the illumination of the illumination zone where the persons are located and the enhanced illumination of the location where the persons are located follow the following priority order:

The obstacle exists in the set distance range of the personnel; the personnel get off the vehicle by the driver's seat; the personnel get off the vehicle by the copilot; the person gets off the vehicle with the rear seat.

Further, for the obstacle appearing in the illumination zone, judging the distance between the obstacle and the external car lamp; when the distance is below the set distance, directly performing enhanced irradiation on the position of the obstacle; when the distance is larger than the set distance, the arrow mark pointing to the obstacle is enhanced and irradiated in the direction of the obstacle; and when the obstacles are simultaneously present in the two illumination areas, selecting the external car lamp closest to the two illumination areas for illumination.

Further, the intelligent light control method further comprises a step of evaluating expected risk of door opening collision; the door opening collision expected risk assessment step comprises the following steps:

and evaluating the expected risk of the obstacle on the opening path of the vehicle door, and giving a warning by controlling the luminous change of the interior atmosphere lamp when the expected risk exists.

Further, the lighting state of the lighting partition where the person is maintained until the person leaves the lighting partition for a set time, and then the external car lamp is turned off.

Further, when any of the following conditions is satisfied, the external car lamp is controlled to flash to give an alarm:

still people are in the car, the car doors are closed, and the user executes a car locking instruction;

after the personnel leave the illumination zone, the vehicle still does not receive a vehicle locking signal;

no personnel are in the car, and the key is still in the car.

Compared with the prior art, the invention has the following advantages:

According to the intelligent light control method, the position conditions of the obstacles are prompted by detecting the light conditions and the obstacle distribution conditions around the outside of the vehicle and utilizing the change of the external lamps, so that the risk of the personnel getting off the vehicle due to the surrounding obstacles is reduced, the change of the external lamps is automatically carried out based on the detected conditions, and the intelligent light control effect of the vehicle in the process of getting off the vehicle by the personnel can be improved.

In addition, divide into four illumination subregions altogether with vehicle surrounding and correspond anterior region, lateral part region (specifically including two lateral part regions of left and right sides) and rear region based on the condition that outside car light includes headlight, side lamp and reversing light, the action is lighted to the illumination subregion that corresponds to the external car light of being convenient for control respectively to the suggestion barrier place to the illumination subregion that makes things convenient for personnel just know and notice the barrier before the getting off roughly and the circumstances respectively.

Another object of the present invention is to provide an intelligent light control system based on the intelligent light control method of the present invention, where the intelligent light control system includes an external vehicle lamp, a detection device and a control module; the detection device is used for detecting the light conditions around the vehicle and the distribution condition of the obstacles, and the control module is used for controlling the luminous change of the external car lamp.

Further, the detection device comprises a seat sensor for detecting whether a person leaves a seat, a door module for detecting opening and closing of a door, a radar and a camera; the control module receives signals of the seat sensor, the car door module, the radar and the camera and judges the situation that a person gets off the car.

Compared with the prior art, the intelligent light control system has the technical advantages of the intelligent light control method.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention, wherein the words of front and back, top and bottom, etc. are used to indicate relative position and are not intended to limit the invention unduly. In the drawings:

FIG. 1 is a flowchart illustrating steps of an intelligent light control method according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating the control of the specific step of step 4 in the intelligent light control method according to the first embodiment of the present invention;

FIG. 3 is a graph illustrating a distribution position of a vehicle camera and a radar, and an expected risk assessment analysis of door opening collision which may be generated by an obstacle according to an embodiment of the present invention;

FIG. 4 is a schematic view showing the distribution of illumination zones according to a first embodiment of the present invention;

FIG. 5 is a schematic view of enhanced illumination of the location and direction of an obstacle in an illumination zone according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an intelligent light control system according to a second embodiment of the invention.

Reference numerals illustrate:

10. An interior atmosphere lamp; 110. a vehicle lamp module; 111. a front headlight; 112a, left side lights; 112b, right side lights; 113. reversing light;

21. A front region; 22. a side region; 23. a rear region;

300. A radar module; 301. front radar; 302. rear radar; 303. a left radar; 304. a right radar;

310. A camera module; 311. a front camera; 312. a rear camera; 313. a left camera; 314. a right camera; 315. an inner camera;

32. a light sensor;

33. A door module; 331. a left front door module; 332. a right front door module; 333. a left rear door module; 334. a right back door module;

4. A key; 400. an antenna; 5. a control module; 500. a CAN bus;

6. an obstacle; 600. and (5) identifying the area.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be noted that, if terms indicating an azimuth or a positional relationship such as "upper", "lower", "inner", "back", and the like are presented, they are based on the azimuth or the positional relationship shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in combination with specific cases.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The embodiment relates to an intelligent light control method which is beneficial to improving the light intelligent control effect of a vehicle in the process of getting off a person; an exemplary control procedure is shown in fig. 1 and 2.

In the whole, the intelligent light control method comprises the steps of detecting the light condition around a vehicle and the distribution condition of the obstacle 6 in the process of getting off the vehicle by personnel; when the light condition is lower than the preset condition, the position of the obstacle 6 is indicated by controlling the change of the light emission of the external lamp.

Specifically, it mainly comprises the following steps:

s1, acquiring the situation of personnel getting off;

s2, judging whether the light conditions around the vehicle are lower than preset conditions or not; if yes, executing step S3;

S3, detecting the distribution condition of the obstacles 6 around the vehicle; if there is an obstacle 6, step S4 is performed;

S4, controlling the luminous change of the external car lamp to prompt the position of the obstacle 6.

The judgment of whether a person has a get-off intention can be comprehensively performed by various aspects such as vehicle flameout, an inner camera 315 of a camera of the vehicle, a signal of door opening and closing obtained by the door module 33, and the like. Detection of the obstacle 6 may be achieved by a radar of the vehicle and a camera mounted outside the vehicle; the light condition around the vehicle can be detected by the light sensor 32, and the preset condition can be specifically set values such as light illuminance and visibility, and the intelligent light control function is started only when the visibility is lower than the condition required by personnel to observe.

Specifically, as shown in fig. 3 and 4, the vehicle of the present embodiment has outer lamps including a headlight 111, a side lamp, and a backup lamp 113. Accordingly, the illumination zone around the vehicle that can be illuminated by the exterior lamps includes a front region 21 illuminated by the headlamp 111, a side region 22 illuminated by the side lamps, and a rear region 23 illuminated by the backup lamp 113. Of course, each of the illumination zones described above may have a certain overlap, and when the obstacle 6 is present in both illumination zones at the same time, the external lamp closest to the illumination zone may be selected for illumination to illuminate the corresponding illumination zone.

Meanwhile, the digital headlight is preferably adopted as an external car light, and is also called as a pixel headlight, namely the headlight is composed of a plurality of light-emitting units, so that an imaging illumination effect similar to an image can be formed, the driving safety and the visibility are improved, and meanwhile, the far-reaching effect that the far-reaching light does not disturb pedestrians on drivers and roads as much as possible is achieved, and the far-reaching effect of clear illumination can be achieved. In this way, the digital headlight can illuminate different shapes of the logo area 600 with enhanced illumination effect in the illumination zone.

Based on the fact that the external vehicle lamp comprises a front headlight 111, a left side lamp 112a, a right side lamp 112b and a back-up lamp 113, the periphery of the vehicle is divided into four illumination zones corresponding to a front zone 21, a side zone 22 (specifically comprising two side zones 22 on the left side and the right side) and a rear zone 23, so that the corresponding external vehicle lamp can be controlled to illuminate the corresponding illumination zone conveniently, the illumination zone where the obstacle 6 is located is prompted, and people can know and notice the respective condition of the obstacle 6 before getting off the vehicle.

By the above-described division of the illumination areas, as shown in fig. 2, in step S4 of the present embodiment, the following specific cases are included:

s41, judging whether a person gets off the vehicle, executing a step S43 before getting off the vehicle, and executing a step S42 after getting off the vehicle;

s42, detecting the position of the person after the person gets off, illuminating an illumination zone where the position of the person is located, and performing enhanced irradiation on the position where the person is located;

S43, lighting the illumination zone where the obstacle 6 is located, and performing enhanced irradiation on the position or the direction where the obstacle 6 is located so as to prompt the position of the obstacle 6.

In this embodiment, a dimming motor may be provided for the external lamp, and the external lamp may be irradiated to follow the person during the change of the person position. The external car lamp is provided with the dimming motor, so that the following function of the external car lamp can be realized, the illumination of the processing external car lamp is focused on the walking position of the personnel, the risk that the personnel collide with the obstacle 6 in the leaving process is further reduced, and the situation that the personnel see the ground clearly is facilitated.

In step S42, regarding the detection and judgment of the position of the person, the position of the person may be determined based on the camera, radar, and antenna 400 positioning of the key 4 provided on the vehicle. Moreover, based on the arrangement that the exterior lights can enhance the illumination of the identification area 600 within the illumination zone, when there are multiple people alight at the same time, the illumination of the illumination zone where the people are located and the enhanced illumination of the location where the people are located preferably follow the following priority order:

(1) The obstacle 6 is present within the set distance range of the person;

(2) The personnel get off the vehicle by the driver's seat;

(3) The personnel get off the vehicle by the copilot;

(4) The person gets off the vehicle with the rear seat.

The setting distance may be 1m to 3m, for example, 2m. In the process of lighting and enhancing the illumination of the identification area 600, when the person and the obstacle 6 are simultaneously present in the same illumination area, the identification area 600 may follow the person when the distance between the person and the obstacle 6 is greater than the set distance, and the identification area 600 may directly correspond to the obstacle 6 when the distance between the person and the obstacle 6 is less than the set distance, so that the person may find the existence of the obstacle 6 more easily. The external car lamp adopts the digital headlight, can throw out different identification figures through the external car lamp to provide more abundant obvious prompt message for the personnel. The digital headlight has high definition without glare and resolution of over 200 ten thousand pixels, and can clearly project marks of various shapes.

Preferably, the lighting state of the lighting zone where the person is maintained until the person leaves the lighting zone for a set time before the person completely leaves the vehicle after getting off the vehicle. After getting off, the area where the personnel are located and walk is lightened, so that the personnel can check the surrounding environment in the process of leaving the vehicle, and the whole protective conveying process of leaving the personnel is finished.

During this time, it is preferable to control the exterior vehicle lamp to blink to alert when any of the following conditions is satisfied:

1. Still people are in the car, the car doors are closed, and the user executes a car locking instruction;

2. after the personnel leave the illumination zone, the vehicle still does not receive a vehicle locking signal;

3. no personnel are in the car, and the key 4 is still in the car.

The device can prevent abnormal situations such as forgetting to lock the car, forgetting to take a key, mistakenly locking other people in the car and the like.

In addition, in the intelligent light control method of the embodiment, the method further comprises a step of estimating expected risk of door opening collision. The door opening collision expected risk assessment step mainly assesses the probability of occurrence of the obstacle 6 on the door opening path, and when the probability reaches a set value, gives a warning by controlling the light emission change of the interior atmosphere lamp 10.

In this embodiment, as shown in fig. 3, taking a back door opening as an example, O is a position of the right radar 304, Z is a moving obstacle, QP is a fully opened state of the door, coordinates (m, n) of P are known amounts, Q coordinates are (0, s), and assuming that a motion trajectory of P is P1 (x, y), the formula x ²+(y-s)²＝m²+(n-s)² (1) is satisfied, 0< x is less than or equal to m.

The radar detects the distance, speed and direction of Z, determines the coordinate of Z as (p, q), decomposes the motion speed into V1 and V2, the arrow direction in the figure is positive, the reaction time of a person is 0.2s, 0.3s is taken as the expected risk zero boundary, and the expected risk exists when the following two formulas are simultaneously satisfied:

y-q<V1*0.3 (2)；

p-x<V2*0.3 (3)。

Since the formula (1) is two unknowns, assuming that the zero boundary satisfies p-x=v2 by the formula (3), calculating the x value, if x satisfies 0< x.ltoreq.m, calculating the y value by the formula (1), and then carrying into the formula (2) to check whether the value satisfies, if the value satisfies, the value is the expected risk, and if the value does not satisfy, the value is not the expected risk.

In summary, according to the intelligent light control method of the embodiment, by detecting the light condition around the outside of the vehicle and the distribution condition of the obstacles 6, the position condition of the obstacles 6 is prompted by utilizing the change of the external lights, so that the risk that the person gets in the vehicle and is touched by the surrounding obstacles 6 is reduced, the change of the external lights is automatically performed based on the detected condition, and the light intelligent control effect of the vehicle in the process of getting in the vehicle by the person can be improved.

The following describes the intelligent light control method of the embodiment in detail with a common application scenario. Personnel get off after the vehicle gets off, so that the intelligent light control logic is started. At this moment, the automatic headlight switch is in an on state, and the central control screen intelligent light function is turned on to start the intelligent light control method of the embodiment.

After the vehicle is powered down, the control module 5 receives the signal of the light sensor as the night, triggers the intelligent light function, starts timing and can set time on the central control screen.

The control module 5 requests the door module 33 to light the headlight 111, the side lamp and the backup lamp 113 through the CAN bus 500, and simultaneously, the front camera 311, the rear camera 312, the left camera 313 and the right camera 314 look around the four cameras and the plurality of radar operations such as the front radar 301, the rear radar 302, the left radar 303, the right radar 304 and the like, detects whether the vehicle body has the expected risk of door opening collision and the surrounding obstacle 6 identification.

If the risk is expected, the control module 5 controls the interior atmosphere lamp 10 to change so as to remind the personnel outside the vehicle or the vehicle to pay attention to the personnel in the vehicle to open the door carefully. The interior atmosphere lamp 10 may be colored red or flash to alert the occupants of the vehicle to the off-vehicle condition; when the expected risk is not present, the control module 5 controls the interior atmosphere lamp 10 to restore to the original light state after the door is opened.

Corresponding to the step S43, when the surrounding road condition has the obstacle 6, the radar works, the radar emits electromagnetic waves towards a certain direction in space, there is reflected waves after touching the object, after the device receives the reflected waves, the radar module can determine the distance from the object through the time of sending and receiving, the direction of the object can be determined after receiving the reflected waves after emitting in a certain direction, the radar module feeds back the distance and direction data to the control module 5, the camera module processes and converts the distance and direction data of the radar into the direction and the distance of the camera, then the camera module uses the machine vision and the deep neural network technology of the camera to confirm the specific size and the type of the object, after determining the obstacle 6, the camera module processor calculates a circle, can frame the obstacle 6, and sends the circle center and the radius data to the control module 5, the control module 5 processes the signal, converts the signal into the distance and the direction from the external car lamp, the external car lamp module judges the obstacle 6 is in the illumination zone of the external car lamp, if in two illumination zones, the principle is near, the car lamp with the nearest distance is selected, and the obstacle 6 is irradiated from the external car lamp.

Judging the distance between the obstacle 6 and an external car lamp for the obstacle 6 in the illumination zone; as shown in fig. 5, the right obstacle 6 is located at a distance D1 from the nearest external lamp of the obstacle 6 equal to or smaller than the set distance, and the obstacle 6 is directly irradiated with the enhanced radiation, and the illuminated enhanced marker area 600 covers the obstacle 6. The distance D2 between the left obstacle 6 and the nearest external lamp is greater than the set distance, so that the direction in which the obstacle 6 is located can be enhanced to illuminate an arrow-shaped identification area 600 pointing to the obstacle 6. If the obstacle 6 is present in both of the illumination zones, the illumination zone is illuminated by the external lamp closest to it. The set distance here can be chosen between 1m and 3m, for example set to 2m; i.e. when the distance is within 2m, the external car lamp can directly circle the obstacle 6; when the distance of the obstacle 6 exceeds 2m, the digital headlight is used to enhance the irradiation of an arrow-shaped identification area 600 to point to the obstacle 6, or other shapes of identifications are used to enhance the irradiation of the direction of the obstacle 6, so as to identify that the obstacle 6 exists in the azimuth.

When the pressure sensor senses pressure change, a camera recognizes that a person comes out from the car, an external car lamp does not irradiate an obstacle 6 any more, the camera tracks the figure of the person getting off, the position of the person getting off is judged, the external car lamp follows the irradiation of the person, if the number of the person getting off is 1, the external car lamp nearest to the person is started, in the process of walking of the person, the lamp nearest to the person is lightened according to the route of the person, when the person getting off is a plurality of persons, the camera module carries out priority identification tracking according to the sequence of the person getting off, and the car body radar is utilized to confirm the position of the person getting off, the camera module sends data of the plurality of persons to the control module 5, the person getting off is in the irradiation range of the external car lamp, the external car lamp irradiates as priority according to the sequence of priority entering the irradiation range, and the condition that the external car lamp irradiates frequently back and forth is avoided. However, if the obstacle 6 is present, the lamp module 110 determines that the distance between the person and the obstacle 6 is within 2m, the priority is changed, the person in the direction of the obstacle 6 is preferentially illuminated, if the distance between the person and the obstacle 6 is within 2m, the priority is changed again, the obstacle 6 is preferentially illuminated, the obstacle 6 is circled by the digital headlight, and when the distance between the person and the obstacle 6 is within 2m, the direction of the person is changed again, and then the person is protected from leaving.

When the in-car camera 315 detects that no person is in the car and the car door is closed, the camera module and the car door module send signals to the central control module, the position of the key is detected through the antenna, whether the key signal is in the car is judged, if so, the central control module sends a head lamp flickering request command through the CAN bus, and the head lamp module controls the head lamp to flicker and projects a key mark so as to promote the driver to lock the car.

When the in-car camera 315 detects that a person is in the car and the car door is closed, the central control module sends a headlight flickering request command through the CAN bus after the user performs car locking, and the headlight module controls the headlight to flicker and projects the personal identification.

When the camera in the car detects that no person is in the car and the car door is closed, and all passengers are out of the detection range of the sensor or the intelligent light time is up, the central control module does not receive a car locking signal, and sends a headlight flickering request command through the CAN bus, and the headlight module controls the headlight to flicker.

In the control process, if the alighting personnel appear in the overlapping area where the lights are turned on, the corresponding external lights are all lighted. Considering the walking condition of the user, frequent flickering of the light is avoided, and the delay time of the light can be set to be 1s. And extinguishing all lights if the counted time is up. If the light is still needed, unlocking or locking can be performed to trigger the light to turn on again.

Example two

The present embodiment relates to an intelligent light control system, which is set based on the intelligent light control method of the first embodiment, and includes an external vehicle lamp, a detection device, and a control module 5. An exemplary configuration of the present intelligent light control system is shown in fig. 6.

The detection device is used for detecting the light condition around the vehicle and the distribution condition of the obstacles 6, and the control module 5 is used for controlling the luminous change of the external car lamp. In this embodiment, the detection device includes, in addition to the radar, the camera, and the light sensor 32 described above, a door module 33 and a seat sensor, where the door module 33 specifically includes a left front door module 331, a right front door module 332, a left rear door module 333, and a right rear door module 334, which are connected to the control module 5 through the door module 33 to provide an open/close status signal of the door. The seat sensors are a plurality of seat cushions provided in the respective vehicle seats for detecting whether a person has left the seats. The situation of getting off the vehicle can be comprehensively judged by combining the signal change situation of the seat sensor and the door module 33 of the vehicle door at the corresponding position of the seat and the detection information of the radar and the camera.

As shown in fig. 6, the respective detection devices are communicatively connected to the control module 5 and the lamp module 110 of the external lamp and the control module 5 by a CAN bus 500. The CAN bus is adopted to construct the system communication of the vehicle, and the system communication device has the advantages of convenience in communication line arrangement and reliable communication performance.

According to the intelligent light control method, the demand scenes such as getting on, getting off, unlocking and locking light of the user are fully identified, and the intelligent control of the light is realized by utilizing the existing configuration on the vehicle. The car lights can be intelligently lightened and linked according to the scene of the user, so that the man-machine interaction of the user is increased. And fully consider user safety and light warning function, increased user experience sense and the science and technology sense of vehicle.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (10)

1. An intelligent light control method is characterized by comprising the following steps:

Detecting light conditions around a vehicle and distribution conditions of obstacles (6) in the process of getting off the vehicle by personnel;

when the light condition is lower than the preset condition, the position of the obstacle (6) is prompted by controlling the luminous change of the external car lamp.

2. The intelligent light control method of claim 1, wherein:

The exterior vehicle lamp comprises a front headlight (111), side lights and a back-up light (113), and a plurality of illumination zones are divided around the vehicle; the plurality of illumination zones comprises a front region (21) illuminated by the headlight (111), a side region (22) illuminated by a side lamp, and a rear region (23) illuminated by a backup lamp (113);

-prompting the position of the obstacle (6) comprises: the external car lamp adopts a digital headlight, so that the local area in the illumination zone can be enhanced and irradiated; before a person gets off the vehicle, the illumination zone where the obstacle (6) is located is lightened, and the position or the direction where the obstacle (6) is located is subjected to enhanced irradiation.

3. The intelligent light control method of claim 2, wherein:

After the personnel get off, detecting the position of the personnel, lighting the illumination zone where the position of the personnel is located, and carrying out enhanced irradiation on the position where the personnel is located.

4. A method of intelligent light control as set forth in claim 3, wherein:

when a plurality of persons come off at the same time, the illumination of the illumination zone where the persons are located and the enhanced illumination of the location where the persons are located follow the following priority order:

The obstacle (6) is present within a set distance range of the person;

The personnel get off the vehicle by the driver's seat;

the personnel get off the vehicle by the copilot;

The person gets off the vehicle with the rear seat.

5. The intelligent light control method of claim 2, wherein:

For the obstacle (6) present in the illumination zone, determining the distance of the obstacle (6) from the external vehicle lamp; when the distance is below the set distance, directly carrying out enhanced irradiation on the position of the obstacle (6); when the distance is larger than the set distance, the irradiation of an arrow mark pointing to the obstacle (6) is enhanced in the direction of the obstacle (6);

When the obstacle (6) is simultaneously present in two illumination zones, the external car lamp closest to the obstacle is selected for illumination.

6. A smart light control method as defined in any one of claims 1 to 5, wherein:

the intelligent light control method further comprises a door opening collision expected risk assessment step; the door opening collision expected risk assessment step comprises the following steps:

The expected risk of the occurrence of an obstacle (6) on the vehicle door opening path is evaluated, and when the expected risk exists, a warning is sent out by controlling the luminous change of the interior atmosphere lamp (10).

7.A smart light control method as defined in any one of claims 2 to 5, wherein:

And maintaining the lighting state of the lighting partition where the person is located until the person leaves the lighting partition for a set time, and extinguishing the external car lamp.

8. The intelligent light control method according to claim 7, wherein the external lamp is controlled to flash to give an alarm when any of the following conditions is satisfied:

still people are in the car, the car doors are closed, and the user executes a car locking instruction;

after the personnel leave the illumination zone, the vehicle still does not receive a vehicle locking signal;

no personnel are in the car, and the key (4) is still in the car.

9. An intelligent light control system based on the intelligent light control method of any one of claims 1 to 8:

Comprises an external car lamp, a detection device and a control module (5); the detection device is used for detecting the light condition around the vehicle and the distribution condition of the obstacles (6), and the control module (5) is used for controlling the luminous change of the external car lamp.

10. The intelligent light control system of claim 9, wherein:

The detection device comprises a seat sensor for detecting whether a person leaves a seat, a door module (33) for detecting opening and closing of a door, a radar and a camera; the control module (5) receives signals of the seat sensor, the door module (33), the radar and the camera, and judges the situation that a person gets off the vehicle.