CN112305839A - Laser projection anti-dazzling system and method and vehicle - Google Patents
Laser projection anti-dazzling system and method and vehicle Download PDFInfo
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- CN112305839A CN112305839A CN202011133589.4A CN202011133589A CN112305839A CN 112305839 A CN112305839 A CN 112305839A CN 202011133589 A CN202011133589 A CN 202011133589A CN 112305839 A CN112305839 A CN 112305839A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
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Abstract
The invention relates to vehicle safety protection, and discloses a laser projection anti-dazzling system which comprises a detection module, a control module and a laser projection module, wherein the detection module is used for detecting the vehicle safety protection; the laser projection module is used for forming a laser pattern and projecting the laser pattern onto the ground; the detection module is suitable for detecting rainfall information of the position where the vehicle is located; the control module is connected with the detection module to receive the rainfall information and judge whether the position of the vehicle is rainy according to the rainfall information, if so, the laser projection module is closed, and if not, the laser projection module is maintained in an open state. The invention also discloses an anti-dazzling method comprising laser projection and a vehicle. The laser projection anti-dazzling system can effectively prevent laser in the laser projection module from being reflected to eyes in rainy days to damage the eyes, and meanwhile, traffic accidents can be reduced, and driving safety is improved.
Description
Technical Field
The invention relates to vehicle safety protection, in particular to a laser projection anti-dazzling system. The invention further relates to a laser projection anti-glare method and a vehicle.
Background
Nowadays, more and more middle and high-end automobiles are equipped with laser projection devices. The laser projection device can be used in a vehicle and also can be used outside the vehicle. Laser projection devices used in vehicles are generally used as head-up displays or atmosphere lamps, and the laser light source power is generally low, so that no obvious risk exists even if a fault occurs. In order to achieve the aim of eye-catching display under the condition of ambient light, the laser projection equipment used outside the vehicle generally has the luminous power of a laser light source reaching several watts or dozens of watts; if it is for illumination, the light emitting power of the laser light source may even reach tens or hundreds of watts. Once a safety accident occurs, it may pose a great threat to the objects in the surrounding environment.
When the weather of rain and snow is met, water or ice blocks can be accumulated on the road surface, when laser is projected to the place, mirror reflection can occur, and when light rays reflected by the mirror surface just irradiate the eyes, the eyes can be damaged. And when the light reflected by the mirror surface is set in the eyes of the driver of the vehicle or other drivers of the vehicles, the driver may be blinded, thereby causing traffic accidents.
Disclosure of Invention
The invention aims to solve the technical problem of providing a laser projection anti-dazzling system, which can effectively prevent laser in a laser projection module from being reflected to eyes in rainy days to cause damage to the eyes, and can reduce traffic accidents and improve driving safety.
The invention aims to solve the technical problem of providing a laser projection anti-dazzling method, which can effectively prevent laser in a laser projection module from being reflected to eyes in rainy days to damage the eyes, reduce traffic accidents and improve driving safety.
The invention provides a vehicle, and the laser projection anti-dazzling system of the vehicle can effectively prevent laser in a laser projection module from being reflected to eyes in rainy days to damage the eyes, and can reduce traffic accidents and improve driving safety.
In order to solve the above technical problems, a first aspect of the present invention provides a laser projection anti-glare system, which includes a detection module, a control module, and a laser projection module; the laser projection module is used for forming a laser pattern and projecting the laser pattern onto the ground; the detection module is suitable for detecting rainfall information of the position where the vehicle is located; the control module is connected with the detection module to receive the rainfall information and judge whether the position of the vehicle is rainy according to the rainfall information, if so, the laser projection module is closed, and if not, the laser projection module is maintained in an open state.
Preferably, the detection module comprises a rainfall sensor, and a signal output end of the rainfall sensor is connected with a signal input end of the control module.
Preferably, the system further comprises a positioning module for positioning the vehicle position, and the positioning module is suitable for collecting weather information of the position according to the position information; the control module is connected with the positioning module to receive the weather information, judges whether the vehicle is rainy according to the weather information, and detects the rainfall information of the position of the vehicle if the vehicle is not rainy; and if so, closing the laser projection module.
Preferably, the detection module is adapted to detect the optical power P of the laser beam reflected by the laser pattern emitted by the laser projection module to any position on the vehicle body on the side where the laser projection module is located through the road surface; the control module is suitable for judging whether the light power P is less than or equal to a first preset laser power PPreparation 1If yes, the laser projection module is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If so, maintaining the laser projection module in an open state, and if not, closing the laser projection module.
Further preferably, the detection module further includes a first optical power meter for detecting the optical power P, and a signal output end of the first optical power meter is connected to a signal input end of the control module.
Preferably, the device further comprises a device for emitting fixing work to the outer surface of the wheel of the vehicleA light emitting module for emitting light; the detection module is also suitable for detecting the light power P reflected by the fixed power light on the outer surface of the wheelWheel(ii) a The control module is suitable for judging the light power PWheelWhether or not it is less than or equal to the preset light power P0If so, maintaining the laser projection module in an open state, and if not, closing the laser projection module.
Further preferably, the light emitting direction of the light emitting module is arranged towards the wheel; the detection module further comprises a detection module for detecting the optical power PWheelThe signal output end of the second optical power meter is connected with the signal input end of the control module.
In a second aspect, the present invention provides a laser projection anti-glare method, including the following steps:
(1) detecting rainfall information of a position where a vehicle is located;
(2) judging whether the position of the vehicle is rainy according to the rainfall information, and if so, closing the laser projection module; if not, the laser projection module is maintained in an open state.
Preferably, the method further comprises: collecting the position of the vehicle, and collecting weather information of the position according to the position of the vehicle; judging whether the rain falls or not according to the weather information, and if not, maintaining the laser projection module in an open state; if yes, the laser projection module 3 is closed.
Preferably, the method further comprises: detecting the light power P of laser which is reflected to any position on the vehicle body on one side where the laser projection module is located by the laser pattern emitted by the laser projection module through a road surface; judging whether the optical power P is less than or equal to a first preset laser power PPreparation 1If yes, the laser projection module is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If so, maintaining the laser projection module in an open state, and if not, closing the laser projection module.
Preferably, the method further comprises: to the aboveThe wheel of a vehicle emits light with a fixed power, the optical power P of the light reflected on the wheel is detectedWheel(ii) a Judging the optical power PWheelWhether or not it is less than or equal to the preset light power P0If so, closing the laser projection module, and if not, closing the laser projection module.
In a third aspect, the present invention provides a vehicle comprising the laser projection anti-glare system according to any one of the above first aspects and performing the laser projection anti-glare method according to any one of the above second aspects.
Through the technical scheme, the laser projection anti-dazzling system can judge whether the position of the vehicle is rainy or not according to the rainfall information by detecting the male detection and collecting the rainfall information of the position of the vehicle, control the work of the laser projection module according to the rainfall information, and close the laser projection module when the position of the vehicle is rainy, so that the laser projected by the laser projection module is reflected to the eyes of people in the vehicle or people around the vehicle through a wet road surface or a water pit in rainy days, the damage of the laser to the eyes of the people in the vehicle or the eyes of the people around the vehicle is reduced, meanwhile, the influence of the reflection of the laser to the eyes of the driver on the realization of the driver is prevented, and the traffic accidents caused by the influence of the reflection of the laser to the eyes of the driver are reduced.
Further advantages of the present invention, as well as the technical effects of preferred embodiments, are further described in the following detailed description.
Drawings
FIG. 1 is a schematic block diagram of one embodiment of a laser projection anti-glare system of the present invention;
FIG. 2 is a flow chart of a first embodiment of a laser projection anti-glare method of the present invention;
FIG. 3 is a functional block diagram of another embodiment of a laser projection anti-glare system of the present invention;
FIG. 4 is a flow chart of a second embodiment of a laser projection anti-glare method of the present invention;
FIG. 5 is a flow chart of a third embodiment of a laser projection anti-glare method of the present invention;
FIG. 6 is a flow chart of a fourth embodiment of a laser projection anti-glare method of the present invention;
FIG. 7 is a functional block diagram of a third embodiment of a laser projection anti-glare system of the present invention;
fig. 8 is a flowchart of a fifth embodiment of the laser projection anti-glare method of the present invention.
Description of the reference numerals
1 detection module and 2 control module
3 laser projection module 4 positioning module
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the description of the present invention, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the terms "front" and "rear" refer to the direction in which the front end of the vehicle body refers and the direction in which the rear end of the vehicle body refers, respectively. "upper" and "lower" refer to the up-down direction when the vehicle is normally placed. "left" and "right" refer to the rear left-right direction as defined by "front", "rear", "upper" and "lower".
Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of the features described.
In a basic embodiment of the present invention, as shown in fig. 1 and 2, there is provided a laser projection anti-glare system, including a detection module 1, a control module 2, and a laser projection module 3; the laser projection module 3 is used for forming a laser pattern and projecting the laser pattern on the ground; the detection module 1 is suitable for detecting the rainfall information of the position where the vehicle is located; the control module 2 is connected with the detection module 1 to receive the rainfall information and judge whether the vehicle is rainy or not according to the rainfall information, if so, the laser projection module 3 is closed, and if not, the laser projection module 3 is maintained in an open state.
According to the present invention, the signal output terminal of the detection module 1 is connected to the signal input terminal of the control module 2 so as to be able to transmit the rainfall information detected by the detection module 1 to the control module 2. The signal output end of the control module 2 is connected with the signal input end of the laser projection module 3 so as to control the work of the laser projection module 3. The laser projection anti-glare system is used on a vehicle. The control module 2 judges whether the rain falls or not according to the rainfall information, and if the detected rainfall is greater than 0, the rain falls, the laser projection module 3 is closed; if the detected rainfall is equal to 0 and there is no rain, the laser projection module 3 is maintained in the open state.
When the laser projection anti-glare system provided by the above basic embodiment of the present invention works, laser emitted from the laser projection module 3 forms a laser pattern and projects the laser pattern on the ground around the vehicle, the detection module 1 detects rainfall information of the position where the vehicle is located and transmits the rainfall information to the control module 2, the control module 2 can determine whether it rains according to the rainfall information, and if it rains, the laser projection module 3 is turned off; if it is not raining, the laser projection module 3 is maintained in the open state.
The laser projection anti-dazzling system provided by the above basic embodiment of the present invention can prevent the laser pattern projected by the laser projection module 3 from being projected on a wet road surface in a rainy day to cause mirror reflection, thereby causing damage to eyes of people inside or outside the vehicle, and can also prevent laser reflected by the mirror surface from being directly irradiated into eyes of a driver to cause dazzling, thereby causing potential safety hazards.
The detecting module 1 may include any sensor capable of detecting rainfall information, and in one embodiment of the present invention, the detecting module 1 includes a rainfall sensor, and a signal output end of the rainfall sensor is connected to a signal input end of the control module 2. Rainfall information can be detected through the rainfall sensor, and information whether the rain falls or not can be accurately detected.
Specifically, the rainfall sensor may be any one of the rainfall sensors in the prior art, and specifically, may be a conventional vehicular rainfall sensor.
In one embodiment of the present invention, as shown in fig. 3, the system further comprises a positioning module 4 for positioning the vehicle, and the positioning module 4 is adapted to collect weather information of the location according to the location information; the control module 2 is connected with the positioning module 4 to receive weather information, whether the vehicle is raining or not is judged according to the weather information, and if the vehicle is not raining, rainfall information of the position where the vehicle is located is detected; if yes, the laser projection module 3 is turned off.
Specifically, the positioning module 4 detects the location information of the vehicle, and then network-searches the weather information of the location. The positioning module 4 may be a GPS positioning module or a beidou positioning module. The signal output end of the positioning module 4 is connected with the signal input end of the control module 2 so as to transmit the weather information collected by the positioning module 4 to the control module 2.
As one embodiment of the present invention, as shown in fig. 3 and 4, the laser projection anti-glare system includes a detection module 1, a control module 2, a laser projection module 3, and a positioning module 4; the laser projection module 3 is used for forming a laser pattern and projecting the laser pattern on the ground; the detection module 1 is suitable for detecting the rainfall information of the position where the vehicle is located; the positioning module 4 is used for positioning the position of the vehicle and is suitable for collecting weather information of the position according to the position information; the control module 2 is suitable for judging whether the vehicle rains or not according to the weather information, if so, the laser projection module 3 is closed, if not, the vehicle position is judged whether the vehicle rains or not according to the rainfall information, if so, the laser projection module 3 is closed, and if not, the laser projection module 3 is maintained in an open state.
The laser projection anti-glare system provided by the above specific embodiment can control the operation of the laser projection module 3 according to the predicted weather information, so as to prevent the ground from being wet due to rain before the vehicle travels, and the detection module 1 in the vehicle does not detect the rainfall information at that time; thereby can further reach and prevent that the laser pattern that laser projection module 3 throws from taking place mirror reflection at the wet road surface of rainy day and causing the injury to personnel in the car or the outer personnel's of car eyes, also can further prevent to cause dazzling in the eyes of driving person through mirror reflection's laser direct irradiation simultaneously to cause the potential safety hazard.
In one embodiment of the present invention, the detection module 1 is adapted to detect the optical power P of the laser light emitted by the laser projection module 3 and reflected to any position on the vehicle body on the side where the laser projection module 3 is located through the road surface; the control module 2 is adapted to determine whether the optical power P is less than or equal to a first preset laser power PPreparation 1If yes, the laser projection module 3 is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If so, the laser projection module 3 is maintained in the open state, and if not, the laser projection module 3 is closed.
Specifically, if the laser projection module 3 is disposed on the left side body of the vehicle, the signal input port of the detection module 1 may be disposed at any position of the left side body of the vehicle. More specifically, in order to accurately receive the laser light reflected by the laser projection module 3 on the ground, the detection module 1 may include a plurality of detection units, each detection unit being dispersedly disposed on the left vehicle body to detect the reflection information of the laser light pattern at different positions, when the optical power P detected by the plurality of detection units is less than PPreparation 1Or one of the detected optical powers is greater than PPreparation 2And when the laser projection module 3 is controlled to be closed.
As an embodiment of the present invention, the first preset laser power PPreparation 1And a second preset laser power PPreparation 2The light reflection rate can be calculated according to the reflectivity of the specular reflection light of the asphalt pavement or the cement pavement or other conventional pavements; wherein the second preset laser power PPreparation 2The laser power, k, of the position at which the reflected light is directed when the laser is specularly reflected2Is PPreparation 2A corresponding laser reflectivity; first preset laser power PPreparation 1The laser power, k, of the position at which the non-reflected light is directed when the laser is specularly reflected1Is PPreparation 1Corresponding laser reflectivity. K of different road surfaces1And k2May differ in the value of (a), where k1Can take a maximum value, k2A minimum value may be taken to enable the system to be adapted to different road surfaces. In particular, PPreparation 1＝PEmitting·k1，PPreparation 2＝PEmitting·k2Wherein P isEmittingIs the laser light emitted from the laser projection module 3. More specifically, such as: k of cement road surface2And k190% and 8%, respectively, of asphalt pavement2And k192% and 6%, respectively, then k1Taken as 8%, k2Taking 90 percent; when the laser projection module emits laser power PEmittingWhen the power is 30W, P isPreparation 1＝30W×8％＝2.4W，PPreparation 230W × 90% to 27W. Of course, P is given herePreparation 1、PPreparation 2、k1And k2It is merely a reference and is not intended to limit the specific values. In the practical use process, the technical personnel in the field can measure the k of different road surfaces through multiple detections on the road surfaces1And k2。
As one embodiment of the present invention, as shown in fig. 5, the laser projection anti-glare system includes a detection module 1, a control module 2, and a laser projection module 3; the laser projection module 3 is used for forming a laser pattern and projecting the laser pattern on the ground; the detection module 1 is suitable for detecting the rainfall information of the position where the vehicle is located and the optical power P of the laser which is reflected to any position on the vehicle body on one side where the laser projection module 3 is located by the laser pattern emitted by the laser projection module 3 through the road surface; the control module 2 judges whether the position of the vehicle is rainy according to the rainfall information, if so, the laser projection module 3 is closed, and if not, whether the light power P is less than or equal to a first preset laser power P is judgedPreparation 1If yes, the laser projection module 3 is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If so, the laser projection module 3 is maintained in the open state, and if not, the laser projection module 3 is closed.
According to the present invention, the laser projection module 3 periodically projects a laser pattern onto the road surface. Preferably, the interval period of the laser projection module 3 is less than or equal to 0.02s, at this time, in the laser projection process, human eyes cannot observe appearance and disappearance of the laser pattern basically, that is, the laser pattern does not flicker within the range that the human eyes can observe, so that the original purpose of the laser projection module 3 can be achieved, and the measurement of the optical power P can be more accurate. Specifically, the detection module 1 detects the optical power of the light reflected to the vehicle body through the road surface when the laser pattern appears and disappears, and calculates the power difference between the two to obtain the optical power P of the laser reflected to any position on the vehicle body on the side where the laser projection module 3 is located by the laser pattern emitted from the laser projection module 3 through the road surface.
In order to further increase the measurement accuracy, the detection module 1 may be configured to detect the power of the laser light reflected by the light of a specific wavelength band to the vehicle body on the side of the laser projection module 3, and then calculate the power difference between the detected power when the laser pattern appears and disappears, and calculate the light power P of the laser light according to the power ratio a of the light of the wavelength band in the laser pattern emitted by the laser projection module 3 to the light in all wavelength bands in the laser pattern. Specifically, if the optical power difference of a specific waveband is detected to be PDifference (D)If P is equal to PDifference (D)A is calculated. More specifically, if the ratio a of the power of the optical wavelength at 750-Difference (D)/a＝20W。
The laser projection anti-glare system provided by the above specific embodiment of the invention can further detect whether the mirror reflection occurs on the road surface, so that the situation that the road surface is wet or the road surface forms a puddle to cause diffuse reflection to set personnel inside or outside the vehicle during the non-rainy period can be prevented from being serious, the laser glare phenomenon is further prevented, and the damage to eyes caused by the laser glare phenomenon is further reduced.
In an embodiment of the present invention, the detection module 1 further includes a first optical power meter for detecting the optical power P, and a signal output end of the first optical power meter is connected to a signal input end of the control module 2, so as to be able to transmit the power information detected by the first optical power meter to the control module 2.
Specifically, the first power meter is disposed on the same side of the laser projection module 3, and preferably can be disposed at a vehicle body position corresponding to a middle point of the projection position, such as a B-pillar of an automobile, so as to accurately detect laser reflected by a road surface of a laser pattern projected by the laser projection module 3 at each angle, and the detection result is more accurate. Preferably, the detection module 1 may include a plurality of first optical power meters, and signal output ends of the plurality of first optical power meters are all connected to a signal input end of the control module 2.
In one embodiment of the invention, the system further comprises a light emitting module for emitting a fixed power light to an outer surface of a wheel of the vehicle; the detection module 1 is also adapted to detect the optical power P of the fixed power light reflected on the outer surface of the wheelWheel(ii) a The control module 2 is adapted to determine the optical power PWheelWhether or not it is less than or equal to the preset light power P0If so, the laser projection module 3 is maintained in the open state, and if not, the laser projection module 3 is closed.
According to the invention, the light-emitting module is designed to operate periodically and can be separated by a time T1Working once, the working duration can be set to T2Here, T1And T2Can be set according to actual conditions, the values of the T can be the same or different, and preferably, T1And T2The values are the same, and the detection period of the detection module 1 can be set more conveniently. As an embodiment of the present invention, T1And T2All for 1-5 s.
In particular, the setting of the detection period of the detection module 1 requires T1And T2The values are consistent, and the detection module 1 can detect the outside of the wheel in the working gap of the light-emitting moduleThe power of the light reflected by the surface is detected, and then the power of the light reflected by the outer surface of the wheel is detected when the light-emitting module works, wherein the difference value of the power detected when the light-emitting module works and the power detected by a gap before the light-emitting module works is the light power P of the light with fixed power reflected by the outer surface of the wheelWheel. By the method, the light power P reflected by the fixed power light on the outer surface of the wheel can be accurately detectedWheelThe accuracy of detection is improved, and the application range of the laser projection dazzling prevention system can be enlarged.
According to the invention, the light-emitting module can adopt 0.06-1W LED light source, and the light power of the LED light source is not high, thus not affecting the tires of the vehicle and not affecting the normal running of the vehicle. Preferably, the light emitting module is a light emitting module capable of emitting invisible light, and the power of the invisible light emitted by the light emitting module is fixed. The predetermined optical power may be represented by formula P0＝PLight (es)·kDry matterIs calculated to obtain, wherein, PLight (es)Is the luminous power of the luminous module, KDry matterReflectance of the dry tire. Wherein KDry matterMay be 5%, PLight (es)May be determined according to the specific light emitting power of the light emitting module. Of course, one skilled in the art can also determine K by measuring the reflectance of a plurality of tires of different makes, models, and wear levelsDry matterThe value of (a). The light emitting module may include a light emitting unit that emits light capable of being irradiated onto one of the tires of the vehicle, and the detecting module 1 detects power of light reflected by the light emitting module through the tire. The light emitting module may also include a plurality of light emitting units, the power of the light emitted from the plurality of light emitting units is equal, the light emitted from the plurality of light emitting units can be respectively disposed on four tires of the vehicle, the detecting module 1 respectively detects the light power of the light reflected by each tire, as long as the light power reflected by one tire has checked the preset light power P0The laser projection module 3 is turned off.
The laser projection anti-dazzling system provided by the above embodiment of the invention can further detect whether the road surface is wet, so that the situation that people inside or outside the vehicle are arranged due to diffuse reflection caused by wet road surface or water pits formed on the road surface in a non-rainy period can be prevented from being serious, the laser dazzling phenomenon is further prevented, and the damage to eyes caused by the laser dazzling phenomenon is further reduced.
Specifically, the control module is adapted to control whether the light emitting module operates or not according to whether the laser projection module 3 operates or not, when the laser projection module 3 is turned on, the light emitting module operates, and when the laser projection module 3 is turned off, the light emitting module stops operating.
As one embodiment of the present invention, as shown in fig. 6, the laser projection anti-glare system includes a detection module 1, a control module 2, a laser projection module 3, and a light emitting module; the laser projection module 3 is used for forming a laser pattern and projecting the laser pattern on the ground; the light emitting module is used for emitting fixed power light to the outer surface of the wheel of the vehicle; the detection module 1 is suitable for detecting the rainfall information of the position of the vehicle and the light power P of the fixed power light reflected on the outer surface of the wheelWheel(ii) a The control module 2 judges whether the vehicle is raining according to the rainfall information, if so, the laser projection module 3 is closed, and if not, the light power P is judgedWheelWhether or not it is less than or equal to the preset light power P0If so, the laser projection module 3 is maintained in the open state, and if not, the laser projection module 3 is closed.
In one embodiment of the invention, the light emitting direction of the light emitting module is arranged towards the wheel; the detection module 1 further comprises a detector for detecting the optical power PWheelAnd the signal output end of the second optical power meter is connected with the signal input end of the control module 2.
According to the invention, when the lighting module comprises a plurality of lighting units, the detection module 1 also comprises a plurality of second laser power meters, and the number of the second laser power meters corresponds to the number of the lighting units. Each laser power meter is used for detecting the reflected light power of each light-emitting unit on the surface of the tire.
In a relatively preferred embodiment of the present invention, as shown in fig. 7 and 8, the laser projection anti-glare system includes a detection module 1, a control module 2, a laser projection module 3, and a light emitting module; laser projectionThe module 3 is used for forming a laser pattern and projecting the laser pattern on the ground; the light emitting module is used for emitting fixed power light to the outer surface of the wheel of the vehicle; the detection module 1 comprises a rainfall sensor, a first laser power meter and a second laser power meter, signal output ends of the rainfall sensor, the first laser power meter and the second laser power meter are connected with a signal input end of the control module 2, the rainfall sensor is used for detecting rainfall information of a position where a vehicle is located, the first laser power meter is used for detecting the light power P of laser at any position on a vehicle body on one side where the laser projection module 3 is located after laser patterns emitted by the laser projection module 3 are reflected to the vehicle body through a road surface, and the second laser power meter is used for detecting the light power P of fixed power light reflected on the outer surface of the wheelWheel(ii) a The control module 2 judges whether the position of the vehicle is rainy according to the rainfall information, if so, the laser projection module 3 is closed, and if not, whether the light power P is less than or equal to a first preset laser power P is judgedPreparation 1If yes, the laser projection module 3 is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If not, the laser projection module 3 is closed, and if yes, the optical power P is judgedWheelWhether or not it is less than or equal to the preset light power P0If so, the laser projection module 3 is maintained in the open state, and if not, the laser projection module 3 is closed.
The laser projection anti-glare system provided by the above relatively preferred embodiment of the present invention can further detect whether the road surface is wet or whether the mirror reflection occurs, so as to prevent the severity of the persons inside or outside the vehicle, who are set by the diffuse reflection due to the wet road surface or the water pit formed on the road surface during the non-rainy period, further prevent the laser glare phenomenon, and further reduce the damage to the eyes.
In a second aspect, an embodiment of the present invention further provides a laser projection anti-glare method, as shown in fig. 2, including the following steps:
(1) detecting rainfall information of a position where a vehicle is located;
(2) judging whether the position of the vehicle is rainy according to the rainfall information, if so, closing the laser projection module 3; if not, the laser projection module 3 is maintained in the open state.
The laser projection anti-dazzling method provided by the embodiment of the invention can prevent the laser pattern projected by the laser projection module 3 from being projected on a wet road surface in rainy days to cause mirror reflection so as to damage the eyes of people in the vehicle or people outside the vehicle, and can also prevent laser reflected by the mirror surface from being directly irradiated into the eyes of a driver to cause dazzling so as to cause potential safety hazards.
In one embodiment of the present invention, as shown in fig. 4, the laser projection anti-glare method includes the steps of:
(1) collecting the position of a vehicle, and collecting weather information of the position according to the position of the vehicle; detecting rainfall information of a position where a vehicle is located;
(2) judging whether the rain falls or not according to the weather information, and if so, closing the laser projection module 3; if not, judging whether the position of the vehicle is rainy according to the rainfall information, and if so, closing the laser projection module 3; if not, the laser projection module 3 is maintained in the open state.
The laser projection anti-dazzling method provided by the above specific embodiment can control the operation of the laser projection module 3 according to the predicted weather information, so as to prevent the ground from being wet due to rain before the vehicle travels, and the detection module 1 in the vehicle does not detect the rainfall information at that time; thereby can further reach and prevent that the laser pattern that laser projection module 3 throws from taking place mirror reflection at the wet road surface of rainy day and causing the injury to personnel in the car or the outer personnel's of car eyes, also can further prevent to cause dazzling in the eyes of driving person through mirror reflection's laser direct irradiation simultaneously to cause the potential safety hazard.
In one embodiment of the present invention, as shown in fig. 5, the laser projection anti-glare method includes the steps of:
(1) detecting rainfall information of the position where the vehicle is located and the optical power P of laser, which is reflected to any position on the vehicle body on one side where the laser projection module 3 is located by a laser pattern emitted by the laser projection module 3 through a road surface;
(2) judging according to rainfall informationIf the vehicle is in the rainy state, the laser projection module 3 is closed; if not, judging whether the optical power P is less than or equal to the first preset laser power P or notPreparation 1If yes, the laser projection module 3 is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If so, the laser projection module 3 is maintained in the open state, and if not, the laser projection module 3 is closed.
The laser projection anti-dazzling method provided by the above specific embodiment of the invention can further detect whether the mirror reflection occurs on the road surface, so that the situation that the road surface is wet or the road surface forms a puddle to cause diffuse reflection to set personnel inside or outside the vehicle can be prevented from being serious in the non-rainy period, the laser dazzling phenomenon is further prevented, and the damage to eyes caused by the laser dazzling phenomenon is further reduced.
In one embodiment of the present invention, as shown in fig. 6, the laser projection anti-glare method includes the steps of:
(1) emitting light having a fixed power to a wheel of a vehicle; detecting rainfall information of a position where a vehicle is located and light power P reflected by light on wheels;
(2) judging whether the position of the vehicle is rainy according to the rainfall information, if so, closing the laser projection module 3; if not, the optical power P is judgedWheelWhether or not it is less than or equal to the preset light power P0If so, the laser projection module 3 is closed, and if not, the laser projection module 3 is closed.
The laser projection anti-dazzling method provided by the above specific embodiment of the invention can further detect whether the road surface is wet, so that the situation that people inside or outside the vehicle are arranged due to diffuse reflection caused by wet road surface or water pits formed on the road surface in a non-rainy period can be prevented from being serious, the laser dazzling phenomenon is further prevented, and the damage to eyes caused by the laser dazzling phenomenon is further reduced.
In a relatively preferred embodiment of the present invention, as shown in fig. 8, the laser projection anti-glare method includes the steps of:
(1) emitting light having a fixed power to a wheel of a vehicle; detecting rainfall information of a position where a vehicle is located, optical power P of laser light emitted by a laser projection module 3 and reflected by a road surface to any position on a vehicle body on one side where the laser projection module 3 is located, and optical power P of light reflected on wheels;
(2) judging whether the position of the vehicle is rainy according to the rainfall information, if so, closing the laser projection module 3; if not, judging whether the optical power P is less than or equal to the first preset laser power P or notPreparation 1If yes, the laser projection module 3 is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If not, the laser projection module 3 is closed, and if yes, the optical power P is judgedWheelWhether or not it is less than or equal to the preset light power P0If so, the laser projection module 3 is closed, and if not, the laser projection module 3 is closed.
The laser projection anti-glare system provided by the above relatively preferred embodiment of the present invention can further detect whether the road surface is wet or whether the mirror reflection occurs, so as to prevent the severity of the persons inside or outside the vehicle, who are set by the diffuse reflection due to the wet road surface or the water pit formed on the road surface during the non-rainy period, further prevent the laser glare phenomenon, and further reduce the damage to the eyes.
Embodiments of the present invention also provide a vehicle including the laser projection anti-glare system of the above embodiments.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (12)
1. The laser projection anti-glare system is characterized by comprising a detection module (1), a control module (2) and a laser projection module (3);
the laser projection module (3) is used for forming a laser pattern and projecting the laser pattern onto the ground;
the detection module (1) is suitable for detecting rainfall information of a position where a vehicle is located;
the control module (2) is connected with the detection module (1) to receive the rainfall information and judge whether the vehicle is rainy or not according to the rainfall information, if so, the laser projection module (3) is closed, and if not, the laser projection module (3) is maintained in an open state.
2. The laser projection anti-glare system according to claim 1, characterized in that the detection module (1) comprises a rain sensor, the signal output of which is connected to the signal input of the control module (2).
3. The laser projection anti-glare system according to claim 1, further comprising a positioning module (4) for positioning the vehicle position, and the positioning module (4) is adapted to collect weather information of the location according to the position information;
the control module (2) is connected with the positioning module (4) to receive the weather information, whether the vehicle is rainy is judged according to the weather information, and if the vehicle is not rainy, the rainfall information of the position where the vehicle is located is detected; if yes, the laser projection module (3) is closed.
4. The laser projection anti-glare system according to claim 1, wherein the detection module (1) is adapted to detect the optical power P of the laser light emitted by the laser projection module (3) and reflected to any position on the vehicle body on the side where the laser projection module (3) is located through the road surface;
the control module (2) is suitable for judging whether the light power P is less than or equal to a first preset laser power PPreparation 1If yes, the laser projection module (3) is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If yes, the laser projection module (3) is maintained in an open state, and if not, the laser projection module (3) is closed.
5. The laser projection anti-glare system according to claim 4, characterized in that the detection module (1) further comprises a first optical power meter for detecting the optical power P, a signal output of the first optical power meter being connected to a signal input of the control module (2).
6. The laser projection anti-glare system according to claim 1 or 4, further comprising a light emitting module for emitting a fixed power light to an outer surface of a wheel of the vehicle;
the detection module (1) is also adapted to detect the optical power P of the fixed power light reflected on the outer surface of the wheelWheel；
The control module (2) is adapted to determine the optical power PWheelWhether or not it is less than or equal to the preset light power P0If yes, the laser projection module (3) is maintained in an open state, and if not, the laser projection module (3) is closed.
7. The laser projection anti-glare system according to claim 6, wherein the light emitting direction of the light emitting module is arranged toward the wheel;
the detection module (1) further comprises a detector for detecting the optical power PWheelThe signal output end of the second optical power meter is connected with the signal input end of the control module (2).
8. A laser projection anti-dazzling method is characterized by comprising the following steps:
(1) detecting rainfall information of a position where a vehicle is located;
(2) judging whether the position of the vehicle is rainy according to the rainfall information, if so, closing the laser projection module (3); if not, the laser projection module (3) is maintained in an open state.
9. The laser projection anti-glare method of claim 8, further comprising: collecting the position of the vehicle, and collecting weather information of the position according to the position of the vehicle;
judging whether the rain falls or not according to the weather information, and if not, maintaining the laser projection module (3) in an open state; if yes, the laser projection module (3) is closed.
10. The laser projection anti-glare method of claim 8, further comprising: detecting the optical power P of laser which is reflected to any position on a vehicle body on one side where the laser projection module (3) is located by a laser pattern emitted by the laser projection module (3) through a road surface;
judging whether the optical power P is less than or equal to a first preset laser power PPreparation 1If yes, the laser projection module (3) is closed, and if not, whether the light power P is smaller than a second preset laser power P or not is judgedPreparation 2If yes, the laser projection module (3) is maintained in an open state, and if not, the laser projection module (3) is closed.
11. The laser projection anti-glare method according to claim 8 or 10, further comprising: emitting light with fixed power to the wheel of the vehicle, and detecting the light power P reflected by the light on the wheelWheel；
Judging the optical power PWheelWhether or not it is less than or equal to the preset light power P0If so, the laser projection module (3) is closed, and if not, the laser projection module (3) is closed.
12. A vehicle comprising a laser projection anti-glare system according to any one of claims 1 to 7 and performing a laser projection anti-glare method according to any one of claims 8 to 11.
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