CN117714654A - Projection system based on vehicle and vehicle - Google Patents

Abstract

The disclosure relates to a projection system based on a vehicle and the vehicle, relates to the technical field of projection image display, and can project at different places along with movement of the vehicle to realize moving point projection of projection equipment. The projection system comprises a detection device, projection equipment, a cradle head and a controller which is respectively in communication connection with the detection device, the projection equipment and the cradle head, wherein the projection equipment is arranged on a vehicle through the cradle head and corresponds to a preset initial projection direction; the detection device is used for acquiring the environmental information around the vehicle and transmitting the environmental information to the controller; the controller is used for determining target projection information according to the environment information and controlling the cradle head or the projection equipment according to the target projection information so as to control the projection equipment to project.

Description

Projection system based on vehicle and vehicle

Technical Field

The disclosure relates to the technical field of projection image display, in particular to a projection system based on a vehicle and the vehicle.

Background

The projection method in the related art mainly projects at a fixed place, for example, projects on the ground by a projector installed at an arbitrary position in a scenic spot, and projects on the ground or a wall surface in an elevator car by a projector installed in the elevator car.

Disclosure of Invention

The purpose of the present disclosure is to provide a projection system based on a vehicle and the vehicle, which can project at different places along with the movement of the vehicle, so as to realize the moving point projection of the projection device.

In order to achieve the above object, in a first aspect, the present disclosure provides a vehicle-based projection system, the projection system including a detection device, a projection apparatus, a pan-tilt, and a controller communicatively connected to the detection device, the projection apparatus, and the pan-tilt, respectively, wherein the projection apparatus is disposed on a vehicle through the pan-tilt, and the projection apparatus corresponds to a preset initial projection direction;

the detection device is used for acquiring the environmental information around the vehicle and transmitting the environmental information to the controller;

the controller is used for determining target projection information according to the environment information and controlling the cradle head or the projection equipment according to the target projection information so as to control the projection equipment to project.

Optionally, the controller is configured to determine a target projection direction according to the environmental information, and control the pan-tilt or the projection device to project in the target projection direction.

Optionally, the controller is configured to control a rotation angle of the pan-tilt in a horizontal direction according to the target projection direction, so as to drive a projection device disposed on the pan-tilt to perform projection;

or,

the controller is used for controlling the projection equipment corresponding to the target projection direction to project according to the target projection direction.

Optionally, the detecting device is configured to acquire a projection image of the projection device corresponding to the projection direction of the target, and send the projection image to the controller;

the controller is used for determining a pre-stored image corresponding to the projection image, and controlling an included angle of a joint of a holder where the projection device is located in the vertical direction according to the projection image and the pre-stored image so as to adjust the included angle between a projection lens of the projection device and the vehicle.

Optionally, the controller is configured to compare the projected image with a pre-stored image, and determine whether the projected image is blocked;

reducing the angle of the joint of the holder in the vertical direction under the condition that the projection image is shielded until the projection image is not shielded;

acquiring a first distance between an obstacle in the projection direction of the target and the projection image under the condition that the projection image is not blocked;

And increasing the angle of the joint of the cradle head in the vertical direction under the condition that the first distance is larger than a first distance threshold value until the first distance is not larger than the first distance threshold value.

Optionally, the controller is configured to determine whether an obstacle exists in a preset direction around the vehicle according to the environmental information;

aiming at the preset direction without the obstacle, taking the preset direction as a target projection direction;

and aiming at the preset direction in which the obstacle exists, acquiring a second distance between the obstacle in the preset direction and the vehicle, and taking the preset direction as a target projection direction when the second distance is larger than a second distance threshold value.

Optionally, the controller is configured to determine a target projection brightness according to the environmental information, and control the projection device according to the target projection brightness, or control the pan-tilt and the projection device according to the target projection brightness.

Optionally, the controller is configured to control the projection brightness of the projection device according to the target projection brightness;

or,

the controller is used for controlling the rotation angle of the cradle head in the horizontal direction and the projection brightness of the projection equipment arranged on the cradle head according to the target projection brightness.

Optionally, the detection device comprises a light sensor, and the light sensor is arranged on the vehicle and is in communication connection with the controller;

the light sensor is used for acquiring the ambient light intensity of the position where the vehicle is located and sending the ambient light intensity to the controller;

the controller is used for controlling the sliding window to slide according to the ambient light intensity so that the ambient light intensity is in the sliding window, determining a first average value of a plurality of light intensities in the sliding window, and taking the first average value as target projection brightness, wherein the length of the sliding window is used for representing the light intensity.

Optionally, the controller is configured to increase the projection brightness of the projection device when the target projection brightness is greater than a preset brightness threshold;

and reducing the projection brightness of the projection equipment under the condition that the target projection brightness is smaller than a preset brightness threshold value.

Optionally, the controller is configured to calculate a second average value of light intensities collected by the plurality of light sensors at the same time, and use the second average value as the ambient light intensity of the location where the vehicle is located.

In a second aspect, the present disclosure provides a vehicle comprising the vehicle-based projection system of the first aspect.

According to the technical scheme, the detection equipment acquires the environmental information around the vehicle and transmits the environmental information to the controller, the controller determines target projection information according to the environmental information, and the holder and/or the projection equipment are controlled according to the target projection information so as to control the projection equipment to project. Therefore, the projection equipment arranged on the vehicle can project at different places along with the movement of the vehicle, so that the moving point projection of the projection equipment can be realized, for example, the intelligent moving point throwing of advertisements can be realized under an advertisement scene.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a block diagram of a vehicle-based projection system, shown in accordance with an exemplary embodiment of the present disclosure.

FIG. 2 is a schematic diagram illustrating interactions of components in a vehicle-based projection system, according to an exemplary embodiment of the present disclosure.

Fig. 3 is a schematic view of a projection direction of a vehicle-based projection system, according to an exemplary embodiment of the present disclosure.

Fig. 4 is a schematic diagram illustrating a determination of a target projection direction according to an exemplary embodiment of the present disclosure.

Fig. 5 is a control schematic diagram of a vehicle-based projection system according to an exemplary embodiment of the present disclosure.

Fig. 6 is another control schematic of a vehicle-based projection system shown in accordance with an exemplary embodiment of the present disclosure.

Fig. 7 is yet another control schematic of a vehicle-based projection system shown in accordance with an exemplary embodiment of the present disclosure.

Description of the reference numerals

Processor 40 of cradle head 30 of projection equipment 20 of detection device 10

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

It should be noted that, all actions for acquiring signals, information or data in the present disclosure are performed under the condition of conforming to the corresponding data protection rule policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.

As the background technology is adopted, the advertisement delivery mode is mainly fixed-point delivery, so that the cost of advertisement delivery is high and the propaganda efficiency is low.

In view of the above, the present disclosure provides a vehicle-based projection system and a vehicle, which can project at different places along with movement of the vehicle, so as to realize moving point projection of a projection device, for example, in an advertisement scene, so that moving point delivery of an advertisement can be realized, and propaganda efficiency is improved.

Fig. 1 is a block diagram of a vehicle-based projection system according to an exemplary embodiment of the present disclosure, which is exemplified as being disposed on a vehicle, the projection system includes a detection apparatus 10, a projection device 20, a head, and a controller 40 communicatively connected to the detection apparatus 10, the projection device 20, and the head 30, respectively, wherein the projection device 20 is disposed on the vehicle through the head 30, and the projection device corresponds to a preset initial projection direction;

as shown in fig. 2, the detecting device 10 is configured to acquire environmental information around the vehicle and transmit the environmental information to the controller 40.

The controller 40 is configured to determine target projection information according to the environmental information, and control the pan-tilt 30 and/or the projection device 20 according to the target projection information, so as to control the projection device 20 to perform projection.

It should be noted that the projection system may include one projection device or may include a plurality of projection devices, and the number of projection devices and the number of holders may be uniform or non-uniform.

For example, where the projection system includes the same number of projection devices and a cradle head, all projection devices are disposed on the vehicle by the cradle head; under the condition that the projection system comprises more projection devices than the number of the holders, the projection devices the same as the number of the holders are arranged on the vehicle through the holders, and other projection devices are directly arranged on the vehicle; the projection equipment is controlled to carry out projection in an assisted manner by controlling the angle of the cradle head in the horizontal direction or the vertical direction.

It should be noted that the detection device may be a radar detector and/or a sensor, etc. of the vehicle, which is not limited in this disclosure. The environmental information may include obstacle information around the vehicle, for example, whether an obstacle exists around the vehicle. The obstacles may include other vehicles surrounding the vehicle, pedestrians, trees, buildings, and the like. The environmental information may also include the ambient brightness of the projection device around the vehicle.

It is noted that the projection device may be a projector, a projection lamp, a projector, or the like. The projection lamp may be a laser projection lamp and the projector may be an LED projector. The present disclosure is not particularly limited thereto. The projection device can project the ground and can also project buildings, such as overhead, wall surfaces, etc.

It should be noted that, the initial projection direction may be the direction before the projection device performs the projection, or may be the direction in which the projection is performed.

For example, the initial projection direction may be preset according to the projection requirement, for example, may be two projection directions, may be three projection directions, may be four projection directions, may be six projection directions, and may be eight projection directions.

As shown in fig. 3, the initial projection directions may include a head direction of the vehicle, a tail direction of the vehicle, a left direction of the vehicle, and a right direction of the vehicle, corresponding to the projection direction a, the projection direction B, the projection direction C, and the projection direction D in fig. 3, respectively.

According to the embodiment of the disclosure, the cradle head and/or the projection equipment are controlled according to the environmental information around the vehicle so as to control the projection equipment to project, so that the projection equipment arranged on the vehicle can project at different places along with the movement of the vehicle, the moving point projection of the projection equipment is realized, for example, the moving point throwing of advertisements can be realized under an advertisement scene, the cost of advertising is reduced, and the propaganda efficiency is improved.

In order to facilitate a better understanding of the vehicle-based projection system provided by the present disclosure by those skilled in the art, the following illustrates the relevant control procedures of the vehicle-based projection system described above.

In a possible embodiment, the controller 40 is configured to determine the projection direction of the target according to the environmental information, and control the pan/tilt head 30 or the projection device 20 to project in the projection direction of the target.

It should be noted that, the environmental information may include obstacle information, where the obstacle information may change over time, and the controller may determine the target projection direction according to the environmental information, and control the pan-tilt or projection device to project in the target projection direction, so as to control the projection direction of the pan-tilt or projection device along with the change of the obstacle around the vehicle.

As shown in fig. 4, when a vehicle in which the projection system is located is parked in a garage, and at a first moment, under the condition that no obstacle exists on the left side and the front side of the vehicle, the controller determines that the front side and the left side of the vehicle are both the target projection directions according to the environmental information, and controls the cradle head or the projection device to project on the front side and the left side of the vehicle; when a certain period of time passes and reaches a second moment, the vehicle is parked in the garage at the left side of the vehicle, the vehicles at the right side and the rear side of the vehicle are driven out, the controller determines that the front, the right side and the rear side of the vehicle are all the target projection directions according to the environmental information, and the cradle head or the projection equipment is controlled to project at the front, the right side and the rear side of the vehicle.

According to the embodiment of the disclosure, the controller determines the projection direction of the target according to the environmental information, and controls the cradle head or the projection equipment to project in the projection direction of the target so as to control the cradle head or the projection equipment to change the projection direction along with the change of the obstacle around the vehicle, thereby improving the intelligence of the projection system.

In a possible embodiment, the controller 40 is configured to determine whether an obstacle exists in a preset direction around the vehicle according to the environmental information;

aiming at a preset direction in which no obstacle exists, taking the preset direction as a target projection direction;

for a preset direction in which an obstacle exists, a second distance between the obstacle in the preset direction and the vehicle is acquired, and the preset direction is taken as a target projection direction when the second distance is larger than a second distance threshold value.

It is worth to say that, the environmental information may include whether an obstacle exists in a preset distance in a preset direction around the vehicle, where the preset direction may include an initial projection direction corresponding to the preset projection direction by the projection device, and the preset distance may be preset according to a projection requirement and/or a safe driving requirement, and in the present disclosure, the preset distance is taken to be 100m.

As shown in fig. 4, in the case that the preset direction includes the front, rear, left and right of the vehicle, the vehicle is parked in the parking lot, and the surrounding of the vehicle is detected by the radar detector and/or the sensor on the vehicle, so as to obtain the environmental information of the surrounding of the vehicle; when the radar detector of the vehicle detects that the distance between the obstacle in the projection direction A and the projection direction C and the vehicle is larger than 100m at the first moment, determining that the obstacle does not exist in the projection direction A and the projection direction C, and taking the projection direction A and the projection direction C as target projection directions; when the radar detector of the vehicle detects that the distance between the obstacle in the projection direction B and the projection direction D of the vehicle and the vehicle is smaller than 100m, the obstacle in the projection direction B and the projection direction D are determined.

It is noted that, for a preset direction in which an obstacle exists, if a second distance between the obstacle and the vehicle in the preset direction is greater than a second distance threshold, the preset direction is determined as the target projection direction. The target projection direction may include a preset direction or may include a plurality of preset directions, and the second distance threshold may be preset according to a projection angle of the projection device, where the second distance threshold is set to 1.8m.

As shown in fig. 4, at the second time, when the radar detector of the vehicle detects that the distance between the obstacle in the projection direction B of the vehicle and the vehicle is smaller than 100m and larger than 1.8m, the projection direction B is set as the target projection direction.

According to the method and the device, the condition of the obstacle around the vehicle is judged according to the environmental information, so that the projection direction of the target is determined, the projection content is prevented from being shielded by the obstacle or interference is avoided to personnel in the same place, and the safety of the projection device in the projection process is improved.

In a possible embodiment, the controller 40 is configured to control the rotation angle of the pan-tilt-zoom lens according to the target projection direction, so as to drive the projection device 20 disposed on the pan-tilt-zoom lens 30 to project;

Or,

and a controller 40 for controlling the projection device 20 corresponding to the projection direction of the target to project according to the projection direction of the target.

It should be noted that, under the condition that the projection direction of the target does not have the projection device, the rotation angle of the cradle head in the horizontal direction can be controlled, so that the projection device arranged on the cradle head is driven to project towards the target direction. In the case where there is a projection device in the target projection direction, the projection in the target projection direction may be performed by controlling the projection device corresponding to the target projection direction to be activated.

It should be noted that, in the case that one projection device is provided on the vehicle, in order to ensure that the projection device can project in a plurality of projection directions, the projection device needs to be provided above the vehicle and has a certain interval with the vehicle, so that the vehicle provided with only one projection device cannot travel on a road section with a limited height and cannot project on a place with a limited height.

For example, referring to fig. 5, in the case where the projection system includes only one projection apparatus and the projection apparatus is disposed on the vehicle through the pan/tilt head, the projection apparatus is rotated to project in the target projection direction by controlling the rotation angle of the pan/tilt head in the horizontal direction, which is set by the photographing apparatus. Referring to fig. 6, in the case where the projection system includes four projection devices, projection is performed by controlling the projection devices corresponding to the projection directions of the targets to be activated.

It is worth to say that, through setting up the projection equipment that corresponds every default orientation on the vehicle, realize that every default orientation all carries out the projection through the projection equipment that corresponds this default orientation, the installation interval between every projection equipment and the vehicle is unrestricted, has guaranteed that the vehicle that is provided with projection equipment can travel in the highway section of limit for height and carry out the projection in the place of limit for height, has further improved propaganda efficiency.

It should be noted that, the projection content of the projection device may be a plurality of pre-stored images, and the type of the pre-stored images may be a still image, for example, a picture, or may be a dynamic image, for example, a moving picture or a video; the content of the pre-stored image may be the advertisement content to be delivered. The projection equipment can circularly project each pre-stored image according to the preset projection sequence and the projection time length of each pre-stored image; the cyclic projection of each pre-stored image can be carried out according to the preset projection sequence of each pre-stored image; the pre-stored images can be switched according to the projection operation of the user, and projection is carried out on each pre-stored image. The projection mode of the projection device is not particularly limited in this disclosure.

For example, in the case where the plurality of pre-stored images are all dynamic images, the projection device may circularly project each dynamic image according to a preset projection sequence of each dynamic image; the moving images may be switched according to the projection operation of the user, and each moving image may be projected. Under the condition that the plurality of pre-stored images are all static images, the projection equipment can circularly project each static image according to the preset projection sequence and the projection duration of each static image; still images can be switched according to the projection operation of a user, and each still image can be projected.

In the embodiment of the disclosure, for different numbers of projection devices, the projection devices corresponding to the projection directions of the targets can be directly controlled to project by controlling the rotation angle of the holder in the horizontal direction to assist the projection devices in the projection directions of the targets, and the holder or the projection devices are intelligently controlled to project according to the projection directions, so that the intellectualization of a projection system is improved. According to the projection content and the corresponding pre-stored image, the included angle between the projection direction of the target and the projection lens of the projection device and the vehicle is adjusted, so that the dynamic adjustment of the projection angle according to the vehicle under different driving environments is realized, the flexibility of the projection device is ensured, the projection content is prevented from being put on other vehicles to cause interference to the driver, and the driving safety is ensured.

In a possible embodiment, the detecting device 10 is configured to acquire a projection image of the projection device corresponding to the projection direction of the target, and send the projection image to the controller 40;

the controller 40 is configured to determine a pre-stored image corresponding to the projection direction, and control an angle of a joint of the projection device 20, which is seated on the pan-tilt 30, in a vertical direction according to the projection image and the pre-stored image, so as to adjust an included angle between a projection lens of the projection device and the vehicle.

It should be noted that, the projection device corresponding to the projection direction of the target projects a pre-stored image on a projection surface corresponding to the projection direction of the target, the projection surface may be a plane such as the ground or a building surface, the projection surface corresponding to the projection direction of the target displays the projection image, and the shielding state of the projection image is determined according to the projection image and the pre-stored image, so as to control the angle of the joint of the pan-tilt where the projection device is located in the vertical direction, and adjust the included angle between the projection lens of the projection device in the projection direction of the target and the vehicle. The included angle between the projection lens of the projection device in the projection direction of the target and the vehicle can be adjusted according to the projection requirement of the user.

According to the projection image and the pre-stored image of the target projection direction, the included angle between the projection lens of the projection device of the target projection direction and the vehicle is adjusted, so that the dynamic adjustment of the projection angle of the projection device by the vehicle under different driving environments is realized, the integrity of projection content is ensured, the flexibility of the projection device is enhanced, and the projection effect of advertisement content is improved.

In a possible embodiment, the controller 40 is configured to compare the projected image with a pre-stored image to determine whether the projected image is blocked;

In the case where the projected image is blocked, reducing the angle of the joint of the pan-tilt-head 30 in the vertical direction until the projected image is not blocked;

under the condition that the projection image is not blocked, acquiring a first distance between an obstacle in the projection direction of the target and the projection image;

in the case where the first distance is greater than the first distance threshold, the angle of the joint of the pan-tilt head 30 in the vertical direction is increased until the first distance is not greater than the first distance threshold.

It is worth to say that, in the case that the projected image has a defect compared with the pre-stored image, it is determined that the projected image is blocked; in the case where the projected image is completely consistent with the pre-stored image, it is determined that the projected image is not occluded. Wherein, decreasing the angle of the joint of the pan-tilt in the vertical direction may change from the left-view state to the right-view state in fig. 7, and increasing the angle of the joint of the pan-tilt in the vertical direction may change from the right-view state to the left-view state in fig. 7.

It should be noted that the first distance threshold may be preset according to a projection effect of the projection device and/or a projection requirement of a user, and the first distance threshold is set to be 1m in the disclosure.

For example, when the vehicle is in a static state, for example, when the vehicle is parked in a parking lot and the projection devices in front of, behind, left and right of the vehicle are projecting, the vehicle is parked in both left and right of the vehicle, at this time, for the left and right of the vehicle, a projection image corresponding to the direction and the pre-stored image are obtained respectively, the projection image is compared with the pre-stored image, and when the projection image is compared with the pre-stored image, it is determined that the projection image is blocked, and the angle of the joint of the tripod head in the vertical direction is reduced, so that the angle between the projection lens of the projection device arranged on the tripod head and the vehicle is reduced until the projection image is completely consistent with the pre-stored image; under the condition that the vehicle is parked in the parking lot and the projection equipment on the left side and the right side of the vehicle are projecting, the vehicle is driven out of the parking lot on the left side and the right side of the vehicle, at the moment, the projection image and the pre-stored image corresponding to the direction are respectively acquired for the left side and the right side of the vehicle, the projection image and the pre-stored image are compared, under the condition that the projection image is completely consistent with the pre-stored image, the projection image is determined to be not shielded, a first distance between an obstacle and the projection image in the direction is acquired, under the condition that the first distance is larger than 1m, the angle of a joint of a tripod head in the direction in the vertical direction is increased, so that the included angle between a projection lens of the projection equipment arranged on the tripod head and the vehicle is increased until the first distance is not larger than 1m.

For example, when the vehicle is in a dynamic driving state, such as when the vehicle is in a driving state and the projection devices on the left and right sides of the vehicle are projecting, other vehicles appear on the right side of the vehicle, at this time, a projection image corresponding to the right side of the vehicle and the pre-stored image are obtained, the projection image is compared with the pre-stored image, and when the projection image is absent compared with the pre-stored image, the projection image is determined to be blocked, and the included angle of the bracket of the cradle head in the direction is reduced, so that the included angle between the projection lens of the projection device arranged on the cradle head and the vehicle is reduced until the projection image is completely consistent with the pre-stored image; under the condition that the vehicle is in a running state and the projection equipment on the left side and the right side of the vehicle is projecting, other vehicles on the right side of the vehicle are away and pedestrians pass on the right side of the vehicle, at the moment, a projection image on the right side of the corresponding vehicle and the pre-stored image are obtained, the projection image is compared with the pre-stored image, the projection image is determined to be not shielded under the condition that the projection image is consistent with the pre-stored image, a first distance between the pedestrians on the right side of the vehicle and the projection image is obtained, and under the condition that the first distance is larger than 1m, the included angle of a bracket of a cradle on the right side of the vehicle in the vertical direction is increased, so that the included angle between a projection lens of the projection equipment arranged on the cradle and the vehicle is increased until the first distance is not larger than 1m.

According to the method and the device, under the condition that the projection image is blocked according to the projection image and the pre-stored image, the included angle between the projection lens of the projection device in the target projection direction and the vehicle is reduced until the projection image is not blocked, so that the completeness of the projection content of the projection device is ensured, the invalid release of advertisements is avoided, the interference of the projection content to other vehicles is avoided, and the driving safety is ensured; under the condition that the projected image is not blocked according to the projected image and the pre-stored image, increasing the included angle between the projection lens of the projection device in the projection direction of the target and the vehicle until the first distance is not greater than the first distance threshold value, and improving the projection effect of the projection device.

In a possible embodiment, the controller 40 is configured to determine the target projection brightness according to the environmental information, and control the projection device according to the target projection brightness, or control the pan/tilt head and the projection device according to the target projection brightness.

It should be noted that the environmental information may include brightness information of the surroundings of the vehicle, the brightness of the surroundings of the vehicle may change with time, the controller may determine the target projection brightness according to the environmental information, the projection device is controlled according to the target projection brightness or the cradle head and the projection device are controlled according to the target projection brightness, so that the projection device or the cradle head and the projection device are controlled along with the brightness change around the vehicle.

In a possible embodiment, the controller 40 is configured to control the brightness of the projection device according to the target projection brightness;

or,

and a controller 40 for controlling the rotation angle of the cradle head in the horizontal direction and the projection brightness of the projection device disposed on the cradle head according to the target projection brightness.

It should be noted that, in the case that the projection device is disposed in each direction on the vehicle, the controller may control the brightness of the projection device according to the target projection brightness, so that the projection brightness of the projection device matches with the ambient light brightness, so that eyes of a person in the current environment are in a comfortable state when the person views the projection content of the projection device. For example, in the case of a cloudy day, the controller may control the projection device to project at a projection brightness that matches the ambient light brightness at the time of the cloudy day; in the sunny day, the controller can control the projection equipment to project with the projection brightness matched with the ambient light brightness in the sunny day; so that eyes of a person viewing the projected content are in a comfortable state on a cloudy or sunny day.

It should be noted that, when only one projection device on the vehicle is set through the pan-tilt, the controller may further control the rotation angle of the pan-tilt in the horizontal direction and the projection brightness of the projection device set on the pan-tilt according to the target projection brightness, so that the projection device may project in the direction with a better projection effect and the projection brightness matched with the ambient light brightness in the current environment. For example, in the case where a part is covered by a tree shade during running of the vehicle, the controller controls the rotation angle of the head in the horizontal direction and the projection brightness of the projection device provided on the head so that the projection device provided on the head projects in the direction in which the tree shade is located with the projection brightness matching the ambient light brightness under the tree shade, so that a person in the vicinity of the vehicle can easily see the projection content, and the eyes of the person are in a comfortable state.

In the embodiment of the disclosure, for different numbers of projection devices, the projection device can be assisted to the position which is convenient for a person to see by controlling the rotation angle of the cradle head in the horizontal direction to project with the projection brightness which matches the ambient light brightness of the position, or the projection device is controlled to project with the projection brightness which matches the ambient light brightness, so that eyes of the person are in a comfortable state when watching the projection content.

In one possible embodiment, the detection device 10 includes a light sensor disposed on the vehicle and in communication with the controller;

a light sensor for acquiring the intensity of the ambient light at the location of the vehicle and transmitting to the controller 40;

and a controller 40 for controlling the sliding window to slide according to the ambient light intensity so that the ambient light intensity is within the sliding window, determining a first average value of the plurality of light intensities within the sliding window, and taking the first average value as a target projection brightness, wherein the length of the sliding window is used for representing the light intensity.

It should be noted that the detecting device may further include an illuminance sensor, a brightness sensor, and a light intensity sensor, etc. Because the light sensor has very high sensitivity to light, the change of the ambient light can be rapidly detected, so that the vehicle-mounted environment is matched and applicable, and the ambient light intensity of the position where the vehicle is located is collected through the high-speed light sensor.

It should be noted that, a light sensor may be disposed on the vehicle, or two or more light sensors may be disposed on the vehicle, and the number of the light sensors disposed on the vehicle may be determined according to the adjustment requirement of the projection brightness of the projection device and the hardware cost. In the case where a light sensor is provided on the roof of the vehicle, as shown in fig. 5, the light intensity of the position where the vehicle is located is collected by the light sensor, reducing the hardware cost. However, in the case of a light sensor provided on a vehicle, if the light sensor is blocked or the angle of the light sensor is changed, the light intensity of the position where the vehicle is located is inaccurate. As shown in fig. 6, in the case that the light sensors are respectively disposed at four corners of the vehicle, the inaccuracy of the light intensity of the position of the vehicle obtained later due to the shielding of a part of the light sensors can be avoided, and the accuracy and reliability of the ambient light intensity of the position of the vehicle obtained later can be improved.

It is worth to say that, because the light sensor has very high sensitivity to light, the angle of detecting the ambient light at the light sensor changes very little, the ambient light intensity obtained by the light sensor changes, so that the light sensing value obtained by the light sensor jumps very fast, if the projection brightness of the projection device is adjusted directly according to the comparison result of the ambient light intensity and the ambient light intensity threshold value, the backlight brightness of the projection device is unstable, and therefore the accuracy of the ambient light detection result can be enhanced through the sliding window.

It should be noted that, the size of the sliding window may be preset according to the change of the ambient light intensity, the initial value of the sliding window is the initial brightness B0 of the projection device, the size of the sliding window is taken as W, and W is a natural number greater than or equal to 0. For example, the sliding window is an index closed section [ left, right ], and the process of controlling the sliding window to slide according to the ambient light intensity may be that the leftt pointer and the high pointer of the sliding window are increased in turn, and the sliding window is increased or decreased along with the change of the leftt pointer and the high pointer, so that the sliding window slides rightward; the leftt pointer and the high pointer of the sliding window are reduced in turn, and the sliding window is increased or reduced along with the change of the leftt pointer and the high pointer, so that the sliding window slides leftwards.

For example, the right pointer of the sliding window is continuously increased to enlarge the sliding window [ left, right ] until the ambient light intensity is within the sliding window, the sliding of the sliding window is ended, and before the sliding window slides again, the left pointer of the sliding window is continuously increased to reduce the sliding window until the ambient light intensity is outside the sliding window.

According to the embodiment of the disclosure, the ambient light intensity of the position where the vehicle is located is obtained through the light sensor, the accuracy of the obtained ambient light intensity is guaranteed, the controller determines the target projection brightness according to the ambient light intensity through the sliding window, and the accuracy of the obtained target projection brightness is enhanced.

In a possible embodiment, the controller 40 is configured to increase the projection brightness of the projection device in a case where the target projection brightness is greater than a preset brightness threshold;

and reducing the projection brightness of the projection device under the condition that the target projection brightness is smaller than a preset brightness threshold value.

It should be noted that, when the target projection brightness is greater than the preset brightness threshold, it is determined that the ambient light becomes bright, so that the projection brightness of the projection device needs to be increased according to the preset adjustment value; in case the target projection brightness is smaller than the preset brightness threshold, it is determined that the ambient light is darkened, and thus the projection brightness of the projection device is reduced according to the preset adjustment value.

The preset adjustment value can be preset according to an upper limit value and a lower limit value of the projection brightness of the projection device, so that the projection brightness of the projection device is more matched with the current ambient light after the projection brightness of the projection device is adjusted according to the preset adjustment value every time. For example, in the case where the projection light brightness of the projection device is [2000ansi,100ansi ], the preset adjustment value is 10lux. However, when the target projection brightness is greater than the upper limit value or less than the lower limit value of the projection device, the projection brightness of the projection device is not adjusted, for example, when the target projection brightness is greater than the preset ambient brightness threshold value and the projection brightness of the projection device is the upper limit value of the projection brightness of the projection device, the projection brightness of the projection device is not adjusted; and under the condition that the target projection brightness is smaller than a preset brightness threshold value and the projection brightness of the projection device is the lower limit value of the projection brightness of the projection device, the projection brightness of the projection device is not adjusted.

It should be noted that, the ambient light of the vehicle is in direct proportion to the projection light projected by the projection device, so that the projection brightness of the projection device can be adjusted according to the ambient light of the vehicle, and the projection brightness of the projection device can also be adjusted according to the current projection requirement of the user. For example, in the case of advertisement placement in daytime, the ambient light is brighter, and the projection brightness of the projection device needs to be increased according to the ambient light; under the condition of advertising at night, the ambient light is darker, and the projection brightness of the projection equipment is required to be reduced according to the ambient light; when the environment of the vehicle is changed from sunny to cloudy, the current projection requirement of the user is to reduce the projection brightness of the projection device, and the projection brightness of the projection device is reduced according to the current projection requirement of the user.

According to the embodiment of the disclosure, according to the change of the ambient light, the projection brightness of the projection equipment is adjusted to be increased or decreased according to the preset adjustment value, so that the intelligent adjustment of the projection brightness of the projection equipment is realized, the projection content of the projection equipment can achieve better display effects under different ambient lights, and the comfort of watching the advertisement content by personnel is improved on the basis of realizing advertisement delivery. The projection brightness of the projection equipment is adjusted according to the ambient light intensity, so that the projection brightness of the projection equipment can be changed along with the change of the ambient light intensity, the energy consumption of the projection equipment is reduced, the projection brightness of the projection equipment is matched with the environment where a vehicle is located, the projection content of the projection equipment can be watched comfortably by people in the environment where the vehicle is located, and the comfortableness of the people watching the projection content of the projection equipment is improved.

However, since the ambient light intensity is continuously changed, if the projection brightness of the projection device is adjusted every time the ambient light intensity is changed, the projection brightness of the projection device is excessively adjusted. Therefore, the embodiment of the disclosure sets a preset duration or a rebound time window according to the rebound effect, and controls the modulation times of the projection brightness of the projection device according to the preset duration or the rebound time window. For example, the projection brightness of the projection device is not adjusted again within a preset time after the projection brightness of the projection device is adjusted; when the rebound time window is not finished after the projection brightness of the projection device is adjusted, the projection brightness of the projection device is not modulated again.

The method and the device adopt the sliding window to determine the change of the ambient light, and combine the preset time or rebound time window to adjust the projection brightness of the projection equipment, so that the excessive adjustment of the projection brightness of the projection equipment is avoided.

In a possible embodiment, the controller 40 is configured to calculate a second average value of the light intensities collected by the plurality of light sensors at the same time, and use the second average value as the ambient light intensity of the location where the vehicle is located.

It is worth to say that, by performing smoothing processing on the light intensity collected by the light sensor at the same moment, the stability and accuracy of the environmental light intensity of the position where the vehicle is located can be increased. The light intensity can be smoothed by means of mean filtering, median filtering and the like. The embodiments of the present disclosure are not limited in this regard.

In the embodiment of the disclosure, the average value of the light intensities acquired by the plurality of light sensors is used as the ambient light intensity of the position where the vehicle is located, so that the inaccuracy of the acquired ambient light intensity of the position where the vehicle is located due to the fact that part of the light sensors are shielded or the angle is changed is avoided, and the accuracy and the reliability of the ambient light intensity of the position where the vehicle is located are further improved.

In a possible embodiment, the projection method may further include:

after the projection device corresponding to the projection direction of the target is controlled to project, the driving speed of the vehicle is determined.

And when the driving speed is greater than a preset speed threshold, controlling the projection equipment corresponding to the projection direction of the target to stop projection.

Specifically, the preset speed threshold value can be preset according to the driving safety and the environment where the vehicle is located, and the preset speed threshold value is 60km/h in the present disclosure.

When the speed of the running vehicle is high, the projection equipment is controlled to stop or not to project, so that the interference of the projection content on the running of other vehicles is avoided, the running safety is ensured, and the occurrence probability of safety accidents in the advertisement putting process is reduced.

For example, referring to fig. 1 and 5, in the case where only one of the projection device 20 and the light sensor is provided in the projection system, the projection device 20 is disposed on the roof of the vehicle through the pan-tilt-head 30, the controller 40 obtains environmental information around the vehicle through the radar detector and/or the sensor carried by the vehicle, determines the target projection direction according to the environmental information, controls the pan-tilt-head 30 to rotate on the horizontal plane relative to the vehicle, so that the projection direction of the projection device 20 on the pan-tilt-head 30 is the target projection direction, and controls the projection device 20 to project on the ground in the target projection direction; acquiring a projection image of the ground corresponding to the projection direction of the target and a pre-stored image corresponding to the projection image, and controlling the angle of the bracket of the cradle head 30 in the vertical direction according to the projection image and the pre-stored image so as to adjust the included angle between the projection lens of the projection device 20 on the cradle head 30 and the vehicle; a controller 40 for controlling the sliding window to slide according to the ambient light intensity so that the ambient light intensity is within the sliding window, determining a first average value of the light intensities within the sliding window, and regarding the first average value as a target projection brightness, determining that the ambient light becomes bright when the target projection brightness is greater than a preset brightness threshold, and increasing the projection brightness of the projection device 20 according to a preset adjustment value; in the case where the target projection brightness is less than the preset brightness threshold, it is determined that the ambient light is darkened, and the projection brightness of the projection device 20 is reduced according to the preset adjustment value.

For example, referring to fig. 1 and 6, in the case that four projection devices 20 and light sensors are provided in the projection system, the projection devices 20 are disposed on the roof of the vehicle through the pan-tilt 30, the controller 40 obtains environmental information around the vehicle through a radar detector and/or a sensor carried by the vehicle, determines a target projection direction according to the environmental information, and controls the projection device 20 corresponding to the target projection direction to project onto the ground of the target projection direction; acquiring a projection image of the ground corresponding to the projection direction of the target and a pre-stored image corresponding to the projection image, and controlling the rotation angle of the tripod head 30 corresponding to the projection direction of the target relative to the vehicle in a vertical plane according to the projection image and the pre-stored image so as to adjust the included angle between the projection lens of the projection device 20 on the tripod head 30 and the vehicle; the controller 40 is configured to calculate a second average value of light intensities collected by the plurality of light sensors at the same time, take the second average value as an ambient light intensity of a position where the vehicle is located, control the sliding window to slide according to the ambient light intensity, so that the ambient light intensity is located in the sliding window, determine a first average value of the plurality of light intensities in the sliding window, and use the first average value as a target projection brightness, determine that the ambient light becomes bright when the target projection brightness is greater than a preset brightness threshold, and increase the projection brightness of the projection device 20 according to a preset adjustment value; in the case where the target projection brightness is less than the preset brightness threshold, it is determined that the ambient light is darkened, and the projection brightness of the projection device 20 is reduced according to the preset adjustment value.

According to the embodiment of the disclosure, the controller determines the target projection direction according to the surrounding environment information of the vehicle, and controls the projection equipment corresponding to the target projection direction to project, so that the moving point projection of the projection equipment can realize intelligent moving point delivery of advertisements, for example, in an advertisement scene, the cost of advertisement delivery is reduced, and the propaganda efficiency is improved; according to the projection content and the corresponding pre-stored image, the included angle between the projection direction of the target and the projection lens of the projection device and the vehicle is adjusted, so that the dynamic adjustment of the projection angle according to the vehicle under different driving environments is realized, the flexibility of the projection device is ensured, the projection content is prevented from being put on other vehicles to cause interference to the driver, and the driving safety is ensured; and the controller also determines the target projection brightness according to the environmental information around the vehicle, and adjusts the projection brightness of the projection equipment according to the target projection brightness, so that the projection brightness of the projection equipment can be changed along with the change of the environmental light intensity, the energy consumption of the projection equipment is reduced, the projection content of the projection equipment can reach better display effects under different environmental lights, the projection brightness of the projection equipment can be watched comfortably by people in the environment where the vehicle is located, and the comfortableness of the people watching the projection content of the projection equipment is improved.

Based on the same inventive concept, the present disclosure also provides a vehicle including the above-described vehicle-based projection system.

It should be noted that, the control and operation of each component in the projection system may be described in detail in the above embodiments.

In the embodiment of the disclosure, the controller determines the target projection direction according to the surrounding environment information of the vehicle, and controls the projection equipment corresponding to the target projection direction to project, so that the moving point projection of the projection equipment can realize intelligent moving point delivery of advertisements, for example, in an advertisement scene, thereby reducing the cost of advertisement delivery and improving the propaganda efficiency; according to the projection content and the corresponding pre-stored image, the included angle between the projection direction of the target and the projection lens of the projection device and the vehicle is adjusted, so that the dynamic adjustment of the projection angle according to the vehicle under different driving environments is realized, the flexibility of the projection device is ensured, the projection content is prevented from being put on other vehicles to cause interference to the driver, and the driving safety is ensured; and the controller also determines the target projection brightness according to the environmental information around the vehicle, and adjusts the projection brightness of the projection equipment according to the target projection brightness, so that the projection brightness of the projection equipment can be changed along with the change of the environmental light intensity, the energy consumption of the projection equipment is reduced, the projection content of the projection equipment can reach better display effects under different environmental lights, the projection brightness of the projection equipment can be watched comfortably by people in the environment where the vehicle is located, and the comfortableness of the people watching the projection content of the projection equipment is improved.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (12)

1. The projection system based on the vehicle is characterized by comprising a detection device, projection equipment, a cloud deck and a controller which is respectively in communication connection with the detection device, the projection equipment and the cloud deck, wherein the projection equipment is arranged on the vehicle through the cloud deck and corresponds to a preset initial projection direction;

The detection device is used for acquiring the environmental information around the vehicle and transmitting the environmental information to the controller;

the controller is used for determining target projection information according to the environment information and controlling the cradle head and/or the projection equipment according to the target projection information so as to control the projection equipment to project.

2. The vehicle-based projection system of claim 1, wherein the controller is configured to determine a target projection direction based on the environmental information and control the pan-tilt or the projection device to project in the target projection direction.

3. The vehicle-based projection system according to claim 2, wherein the controller is configured to control a rotation angle of the pan-tilt in a horizontal direction according to the target projection direction, so as to drive a projection device disposed on the pan-tilt to perform projection;

or,

the controller is used for controlling the projection equipment corresponding to the target projection direction to project according to the target projection direction.

4. A vehicle-based projection system according to claim 3, wherein the detection means is adapted to acquire a projection image of the projection device corresponding to the target projection direction and to send the projection image to the controller;

The controller is used for determining a pre-stored image corresponding to the projection image, and controlling the angle of the joint of the holder where the projection device is located in the vertical direction according to the projection image and the pre-stored image so as to adjust the included angle between the projection lens of the projection device and the vehicle.

5. The vehicle-based projection system of claim 4, wherein the controller is configured to compare the projected image to a pre-stored image to determine if the projected image is occluded;

reducing the angle of the joint of the holder in the vertical direction under the condition that the projection image is shielded until the projection image is not shielded;

acquiring a first distance between an obstacle in the projection direction of the target and the projection image under the condition that the projection image is not blocked;

and increasing the angle of the joint of the pan-tilt in the vertical direction under the condition that the first distance is larger than a first distance threshold value until the first distance is not larger than the first distance threshold value.

6. The vehicle-based projection system of any of claims 2-5, wherein the controller is configured to determine whether an obstacle is present in a preset direction around the vehicle based on the environmental information;

Aiming at the preset direction without the obstacle, taking the preset direction as a target projection direction;

and aiming at the preset direction in which the obstacle exists, acquiring a second distance between the obstacle in the preset direction and the vehicle, and taking the preset direction as a target projection direction when the second distance is larger than a second distance threshold value.

7. The vehicle-based projection system of claim 1, wherein the controller is configured to determine a target projection brightness based on the environmental information and to control the projection device based on the target projection brightness or to control the pan-tilt and the projection device based on the target projection brightness.

8. The vehicle-based projection system of claim 7, wherein the controller is configured to control the projection brightness of the projection device based on the target projection brightness;

or,

the controller is used for controlling the rotation angle of the cradle head in the horizontal direction and the projection brightness of the projection equipment arranged on the cradle head according to the target projection brightness.

9. The vehicle-based projection system of claim 8, wherein the detection device comprises a light sensor disposed on the vehicle and communicatively coupled to the controller;

The light sensor is used for acquiring the ambient light intensity of the position where the vehicle is located and sending the ambient light intensity to the controller;

the controller is used for controlling the sliding window to slide according to the ambient light intensity so that the ambient light intensity is in the sliding window, determining a first average value of a plurality of light intensities in the sliding window, and taking the first average value as target projection brightness, wherein the length of the sliding window is used for representing the light intensity.

10. The vehicle-based projection system of any of claims 7-9, wherein the controller is configured to increase the projected brightness of the projection device if the target projected brightness is greater than a preset brightness threshold;

and reducing the projection brightness of the projection equipment under the condition that the target projection brightness is smaller than a preset brightness threshold value.

11. The vehicle-based projection system of claim 10, wherein the controller is configured to calculate a second average of light intensities collected by the plurality of light sensors at a same time and use the second average as the ambient light intensity at the location of the vehicle.

12. A vehicle comprising the vehicle-based projection system of any of claims 1-11.