CN211543383U

CN211543383U - Driving assistance system

Info

Publication number: CN211543383U
Application number: CN201922499818.3U
Authority: CN
Inventors: 戈斌; 张韬; 朱明华; 郭田忠
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-22
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a driver assistance system, include: the optical detection and measurement module is used for detecting the position parameters of the objects around the optical detection and measurement module; the LiFi driving module is connected with the optical detection and measurement module and can receive the position parameters and modulate the position parameters to generate LiFi signals; the lighting module is connected with the LiFi driving module and used for providing lighting and transmitting LiFi signals; the LiFi receiving module is used for receiving the LiFi signals transmitted by the lighting module and decoding the LiFi signals into visual information; and the display module is connected with the LiFi receiving module and used for displaying visual information. The utility model can actively detect the position parameters of the surrounding objects, provides a transmission path for the position parameters, and can take follow-up measures in time after other vehicles know the conditions so as to reduce the probability of collision accidents; the vehicle can know the distance information between the vehicle and each vehicle in real time through the display module, and can take necessary measures in time according to the situation to avoid accidents.

Description

Driving assistance system

Technical Field

The utility model relates to a car driver assistance field especially relates to driver assistance system.

Background

With the advent of the intelligent era, intelligent driving technology has been increasingly studied. In order to assist driving, a detection device for detecting and knowing a positional relationship between the vehicle and a surrounding object, such as an in-vehicle radar, needs to be mounted on the vehicle.

Most of position detection devices installed on the current vehicles directly feed distance parameters between detected objects and the vehicles with radar installed to the vehicles back to the vehicles to assist driving, so that collision accidents are avoided, when the distance between the two vehicles is close, the vehicles positioned in front of the vehicles cannot realize the danger of collision, and if the vehicles in front can know in advance and take measures in time before the collision accidents occur, the probability of the occurrence of the traffic accidents is effectively reduced, however, no way is available for directly sending danger information to the vehicles in front; in addition, when the automatic driving level is high, the current car networking depending on 5G or WiFi is suitable for sending area data interaction, but high-speed private information transmission between specific vehicles cannot be realized, for example, dangerous distress information, road condition information and the like cannot be timely transmitted between running vehicles.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a driving assistance system for solving the problem that the vehicle in front of the host vehicle cannot know the collision risk in time.

A driving assistance system comprising:

the optical detection and measurement module is used for detecting the position parameters of the objects around the optical detection and measurement module;

the LiFi driving module is connected with the optical detection and measurement module and can receive the position parameters and modulate the position parameters to generate LiFi signals;

the lighting module is connected with the LiFi driving module and used for providing lighting and transmitting the LiFi signal;

the LiFi receiving module is used for receiving the LiFi signals transmitted by the lighting module and decoding the LiFi signals into visual information;

and the display module is connected with the LiFi receiving module and used for displaying the visual information.

The driving assistance system has at least the following beneficial technical effects:

(1) in the embodiment, the light detection and measurement module can actively detect the position parameters of the surrounding objects, the position parameters are modulated by the LiFi driving module and then are directly emitted out through the illumination module, a transmission path is provided for the position parameters, and other vehicles can take follow-up measures (such as flashing tail lights or displaying distance to warn the vehicle) in time after knowing the situation, so that the probability of collision accidents is reduced; in addition, other data information can also be sent to the vehicle that the lighting module can shine, like dangerous SOS information, sharing of entertainment information, road conditions information etc. to be favorable to realizing the shared transmission of private information between two cars, the vehicle can become a removal information sharing basic station, is used for sharing road conditions, weather, proruption situation etc. real-time information on the internet, becomes the component part of vehicle net.

(2) This embodiment makes lighting module further integrate the function of surveying with the transmission data, has increased holistic functionality and value, more is favorable to catering to consumer demand and marketing.

(3) The embodiment provides a good way for the driver to know the distance information between the driver and other vehicles, and particularly when there are more vehicles near the driver, the driver can know the distance information between the driver and each vehicle in real time through the display module, and when a potential rear-end collision occurs, necessary measures such as deceleration lane change or driving direction adjustment can be timely taken according to the situation to avoid the occurrence of an accident, so that the probability of the occurrence of the accident is further reduced, and other information can be displayed through the display module at the tail of the front vehicle to be convenient for the driver to view in real time.

In one embodiment, the light detection and measurement module and the illumination module are disposed at a head of the vehicle, and the LiFi receiving module and the display module are disposed at a tail of the other vehicle.

In one embodiment, the optical detection and measurement module comprises a detection light source and a detection component, wherein the detection light source and the detection component are connected, the detection light source is used for generating detection light, and the detection component can emit the detection light outwards so as to detect and obtain the position parameter of the object;

the lighting module comprises a lighting source and a lighting assembly which are connected, the lighting source is used for generating light for lighting, and the lighting assembly is used for receiving and emitting the light for lighting outwards.

In one embodiment, the LiFi driver module is integrated in a driver of the illumination source.

In one embodiment, the illumination light source and the detection light source are combined to form a light source assembly, and the light source assembly is connected with the illumination component and the detection component through light transmission components respectively.

In one embodiment, the lighting assembly comprises:

a mounting shell which forms a cavity penetrating from front to back;

a fluorescent member disposed at a rear end of the mounting case, the fluorescent member being positioned on a light path of the illumination light output from the light transmission member, and emitting visible light under excitation of the illumination light;

the light condensing unit is arranged on one side of the fluorescent part and used for condensing the visible light to form an illuminating light beam and transmitting the illuminating light beam in the cavity;

and the lens unit is arranged at the front end of the mounting shell and is used for enabling the illumination light beams to form light rays which are emitted outwards at a certain angle.

In one embodiment, the fluorescent member comprises:

the radiator is fixed at the rear end of the mounting shell;

and the fluorescent sheet is fixed on the radiator and positioned on the light path of the light for illumination, the fluorescent sheet can receive and reflect the light for illumination, and the surface of the fluorescent sheet faces the light condensation unit.

In one embodiment, the illumination device further comprises a light detection plate which is arranged on the light path of the illumination light reflected by the fluorescent sheet and is used for detecting the energy of the illumination light reflected by the fluorescent sheet.

In one embodiment, the fluorescent member includes a fluorescent sheet positioned on an optical path of the illumination light; the fluorescent sheet may receive the illumination light and transmit the illumination light.

In one embodiment, sapphire layers are arranged on two sides of the fluorescent sheet.

In one embodiment, the detection assembly includes a transmitting module and a receiving module, the transmitting module is connected to the other end of the optical transmission member and is configured to transmit the detection light transmitted by the optical transmission member to the outside, and the receiving module is configured to receive a reflected light of the detection light.

In one embodiment, the emission module is disposed on a side of the illumination assembly, and the lens unit is provided with a light homogenizing region for homogenizing the detection light emitted by the emission module into a light beam with uniform light intensity distribution and a specific emission angle.

In one embodiment, the dodging region is disposed at a side edge of the lens unit or around the lens unit.

In one embodiment, the emitting module is fixed on the inner wall of the mounting shell, and the emitting module is separated from the illumination light beam through a partition.

In one embodiment, the emission module includes one or more infrared lasers, the infrared lasers are fixed on the inner wall of the installation shell through fixing seats, and partition plates for separating the emission module from the illumination light beams are arranged on the fixing seats.

In one embodiment, the light transmission member comprises an illumination conducting optical fiber and a detection conducting optical fiber; the two ends of the illumination conduction optical fiber are respectively connected with the illumination light source and the illumination assembly and used for transmitting the light for illumination to the illumination assembly, and the two ends of the detection conduction optical fiber are respectively connected with the detection light source and the detection assembly and used for transmitting the light for detection to the detection assembly.

Drawings

Fig. 1 is a schematic view of an application scenario of a driving assistance system according to an embodiment of the present invention;

fig. 2 is a schematic view of an overall structure of the optical detection and measurement module and the illumination module according to an embodiment of the present invention;

FIG. 3 is an exploded view of the light detection and measurement module and the illumination assembly and detection assembly of the illumination module of FIG. 2;

FIG. 4 is an internal structural view of the illumination assembly and the detection assembly in the optical detection and measurement module and the illumination module of FIG. 2;

FIG. 5 is a schematic view of illumination light impinging on a phosphor element within the illumination assembly of FIG. 4;

FIG. 6 is a schematic view of a fluorescent member optically coupled to illumination according to another embodiment of the present invention;

fig. 7 is a schematic diagram of the light detecting and measuring module of fig. 2 in which an emitting module and a lens unit are cooperatively disposed.

In the figure, 10, the host vehicle, 20, other vehicles, 21, display modules,

100. a light source assembly, 110, a heat sink,

200. a light transmission member 210, an illumination conducting fiber 220, a detection conducting fiber,

310. a mounting case 330, a light condensing unit 340, a lens unit 341, a light homogenizing section,

321a, a heat radiator, 322a, a fluorescent sheet, 323a, heat radiation glue, 324a, a sapphire sheet, 325a, a light detection plate, 326a, a fixed metal plate, 400a, a laser head, 401a, light for illumination,

322b, phosphor sheet, 324b, sapphire layer, 400b, laser head, 401b, light for illumination,

510. a transmitting module 511, an infrared laser 512, a fixed seat 5121 and a clapboard,

520. and a receiving module.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Those of ordinary skill in the art will recognize that variations and modifications of the various embodiments described herein can be made without departing from the scope of the invention, which is defined by the appended claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In an embodiment of the present invention, a driving assistance system is provided, including: light detection and measurement module, LiFi drive module and lighting module. The optical detection and measurement module is used for detecting the position parameters of the objects around the optical detection and measurement module; the LiFi driving module is connected with the optical detection and measurement module, and can receive the position parameters and modulate the position parameters to generate LiFi signals; the lighting module is connected with the LiFi driving module and used for providing lighting and emitting the LiFi signals at the same time.

During the use, the position parameter of the object around can be reachd with the measuring module detectable to the photodetection (like object and photodetection and measuring module between distance L0, object for photodetection and measuring module's position etc.), after the LiFi drive module received position parameter, with position parameter information modulation generation LiFi signal, this LiFi signal can be directly outwards launched simultaneously with the illumination light of light source. Specifically, referring to fig. 1, when the driving assistance system is disposed on the vehicle 10, the LiFi signal carrying the position parameter information and emitted forward by the optical detection and measurement module can be received by other vehicles 20 driving ahead. After the other vehicles 20 in front receive the LiFi signal, subsequent decision-making can be performed according to the signal content, for example, when the position parameter information shows that the distance L0 between the two vehicles is too close, the lane can be changed or the distance between the two vehicles can be increased by accelerating, and the tail lamp can be flickered to warn the rear vehicle; when the display module 21 is installed on another vehicle 20 in front, the distance L0 can be displayed on the display module 21 for the vehicle 10 to view, so that the driver of the vehicle 10 can timely and accurately know the distance information between the vehicle and the preceding vehicle.

In addition to the transmission of the location parameter information, the LiFi signal may also transmit other information, such as road conditions, weather, route planning, emergency conditions, etc., so that the vehicle becomes a mobile information sharing base station in the vehicle network. Compared with other means, the method for transmitting the V2V or V2X information by adopting the LiFi mode has better privacy and is not easy to steal the private information.

In this embodiment, the optical detection and measurement module can actively detect the position parameters of the surrounding objects (such as other vehicles 20), the position parameters are modulated by the LiFi driving module and then directly emitted by the illumination module, so as to provide a transmission path for the position parameters, and the other vehicles 20 can take subsequent measures (such as flashing tail lights or displaying a distance to warn the vehicle 10) in time after knowing the situation, so as to reduce the probability of collision accidents; in addition, other data information can also be sent to the vehicle that the lighting module can shine, like dangerous SOS information, amusement information sharing, road conditions information etc. to be favorable to realizing the shared transmission of private information between two cars. Compared with other means, the method for transmitting the V2V or V2X information by adopting the LiFi mode has better privacy and is not easy to steal the private information.

This embodiment makes lighting module further integrate the function of surveying with the transmission data, has increased holistic functionality and value, more is favorable to catering to consumer demand and marketing.

In the automatic driving of the vehicle, the distance parameter between the other vehicle 20 and the host vehicle 10 detected by the detection component can be directly fed back to the host vehicle 10 to assist the driving, but on the one hand, the driver of the host vehicle 10 cannot always look at the screen in order to ensure that the driver can safely drive the host vehicle 10; on the other hand, in a use environment where the automatic driving level is low, when there are many other vehicles 20 around the host vehicle 10, when a potential rear-end collision occurs, the driver does not have a good way to accurately know the distance information between the host vehicle 10 and a certain surrounding vehicle, and thus it is unclear which surrounding vehicle is closer to the host vehicle 10 and is more likely to be scratched. Therefore, the light detection and measurement module, the LiFi driving module and the illumination module are disposed on the vehicle 10; still including locating LiFi receiving module 520 and the display module 21 on other vehicles 20, LiFi receiving module 520 is used for receiving the lighting module transmission the LiFi signal will the LiFi signal is decoded into visual information, display module 21 with LiFi receiving module 520 is connected and is used for showing visual information.

In this embodiment, the LiFi driving module of the host vehicle 10 may modulate information to generate a LiFi signal, and emit the LiFi signal through the illumination light source of the host vehicle 10, the LiFi signal may be received by the LiFi receiving module 520 installed on the other vehicle 20, and the LiFi receiving module 520 may directly display the position parameters (the distance L0 between the two vehicles, the direction, the relative speed, etc.) in the signal through the display module 21 (such as a display screen, a rear windshield projection display system, a vehicle tail light with a display function, a vehicle tail ground projection display system, etc.) arranged at the tail of the host vehicle, so that the driver of the host vehicle 10 can accurately know the distance information between the host vehicle and the host vehicle. In the embodiment, a good way is provided for the driver of the host vehicle 10 to know the distance information between the host vehicle 10 and the other vehicles 20, especially when there are many vehicles near the host vehicle 10, the driver of the host vehicle 10 can know the distance information between the host vehicle and each vehicle in real time, and when a potential rear-end collision occurs, necessary measures such as deceleration lane change or driving direction adjustment can be timely taken according to circumstances to avoid the occurrence of the accident, so that the probability of the accident is further reduced.

The LiFi signal emitted by the illumination light source of the vehicle 10 can also transmit other information to other vehicles 20, such as information of road conditions, weather, path planning, emergency conditions, etc., and the information can be displayed through the display module 21 at the tail of the vehicle in front, so that the driver of the vehicle can conveniently view the information in real time.

In some embodiments, the light detecting and measuring module and the lighting module are disposed at the head of the host vehicle 10, and the LiFi receiving module 520 and the display module 21 are disposed at the tail of the other vehicle 20.

In this embodiment, the optical detection and measurement module and the illumination module are disposed at the head of the vehicle 10, which is beneficial to expanding the detection angle and range of the optical detection and measurement module and reducing the detection blind area; the LiFi receiving module 520 and the display module 21 are disposed at the rear of the other vehicle 20, which is beneficial to receiving the LiFi signal and facilitates the vehicle 10 to view the information displayed on the display module 21.

In some embodiments, the optical detection and measurement module comprises a detection light source and a detection component, wherein the detection light source is connected to generate detection light, and the detection component can emit the detection light outwards so as to detect and obtain the position parameter of the object;

In this embodiment, the detection component detects the emitted detection light to obtain the position parameter of the object, specifically, the detection light (such as infrared laser) emitted by the detection component is reflected by the surface of the object when encountering the object, and after the reflected light is transmitted back to the detection component to be received, the vehicle console can determine the direction of the object relative to the vehicle 10 based on the incident angle of the received reflected light, and can calculate the distance L0 between the object and the vehicle 10 according to the time interval between the reception of the reflected light and the emission of the detection signal. The above description is about the method for detecting and obtaining the orientation of the surrounding object by using the principle of light reflection, and certainly, in some other embodiments, the orientation of the surrounding object can also be obtained by detecting other parameters of light feedback for detection, which is within the protection scope of the present invention.

In some embodiments, the LiFi driver module is integrated into a driver of the illumination source. This setting is favorable to practicing thrift installation space and holistic miniaturized design. Of course, in other embodiments, the LiFi driving module may be disposed outside the illumination light source and connected to the illumination light source, which is not limited herein.

In actual installation, the detection assembly can be installed at the front part of the vehicle, such as a heat dissipation grid or a bumper, or can be directly installed inside the vehicle lamp, but all have certain problems: when the automobile bumper is installed at a bumper position, more wiring harnesses are additionally arranged near an engine compartment, and a cleaning system is additionally arranged; when the LED lamp is directly installed inside the lamp, the size of the lamp is huge, and the heating of the detection assembly brings extra heat dissipation burden to the lamp. Therefore, in some embodiments, the illumination light source and the detection light source are combined to form a light source assembly 100, and the light source assembly 100 is connected to the illumination component and the detection component through a light transmission component 200.

The light source assembly 100 is independent of the illumination assembly and the detection assembly, and is connected to the illumination assembly and the detection assembly through the light transmission member 200, and can directly transmit the generated illumination light and detection light to the illumination assembly and the detection assembly through the light transmission member 200, and the generated illumination light and detection light are respectively used for providing illumination and detection positions.

In this embodiment, the light source assembly 100 is independently installed with the following advantages:

(1) the light source assembly 100 is independent of the lighting assembly and the detection assembly, the light source assembly 100 with huge occupied volume and heat productivity can be separated from other functional components, and the light source assembly 100 can be flexibly arranged in a place with good heat dissipation and ventilation conditions to dissipate heat quickly, for example, the positions in an engine compartment and a cockpit of a vehicle, so that the service life of the whole equipment can be prolonged. Moreover, because the light source assembly 100 is independently arranged, the light source assembly 100 can be arranged at a position which is easily touched by personnel during installation, so that the installation is convenient, the maintenance and the replacement are facilitated, and the convenience is provided for the subsequent maintenance;

(2) the light source assembly 100 with larger volume is independently installed, and the detection component has smaller volume and can be arranged close to the illumination component, so that the miniaturization design of the whole module is facilitated, and the detection component and the illumination component can not occupy redundant space even though being integrated into a whole;

(3) because the light source assembly 100 with larger volume is independently arranged and the heat dissipation problem is solved, the detection component and the illumination component can be integrally arranged at the car lamp installation position, which is beneficial to expanding the detection angle and range and reducing the detection blind area; the lighting assembly, the detection assembly and the light source assembly 100 are simple in connection mode, a large number of connection wire harnesses are not required to be arranged, the structure is simple, the installation space is saved, and later maintenance and overhaul are facilitated.

(4) The detection assembly and the illumination assembly can be fixed inside the car lamp after being combined to be protected, the overall appearance of the car is not influenced, and dust is not easily polluted when the detection assembly is arranged inside the car lamp.

Preferably, a heat sink 110, such as an air-cooled heat sink or a water-cooled heat sink, may be disposed on the light source assembly 100, so as to dissipate heat from the light source assembly 100 by air-cooling or water-cooling.

Referring to fig. 3 and 4, in some embodiments, the lighting assembly comprises:

a mounting case 310 forming a cavity penetrating in the front and rear;

a fluorescent member disposed at a rear end of the mounting case 310, located on an optical path of the illumination light output from the light transmission member 200, and emitting visible light under excitation of the illumination light;

the light condensing unit 330 is arranged on one side of the fluorescent part and used for condensing visible light to form an illumination light beam and transmitting the illumination light beam in the cavity;

and a lens unit 340 provided at a front end of the mounting housing 310 for adjusting the illumination beam to be emitted outward at an angle.

The condensing unit 330 may specifically select a mirror. In this embodiment, the illumination light is used as the excitation light, for example, the illumination light may be high-energy blue laser, specifically, the illumination light (such as blue laser) transmitted to the illumination assembly through the light transmission member 200 may be emitted through a laser head disposed at the rear end of the mounting housing 310, the fluorescent member may perform energy level transition and emit visible fluorescence under the excitation of the illumination light, and the visible light is converged by the light converging unit 330 to form visible light beams, which are then emitted outward through the lens unit 340 to provide illumination.

In this embodiment, the light condensing unit 330 and the lens unit 340 condense the fluorescence to form a visible light beam and adjust the visible light beam, and the installation housing 310 provides a transmission space for the visible light beam; the visible fluorescence emitted by the fluorescent component has high illumination brightness, and the energy consumption is less than that of the traditional illumination mode under the condition of needing the same illumination intensity, so that the cost is saved; and because the fluorescent parts of different colors can emit light of different colors after being excited, the fluorescent parts of different colors can be set according to the actual light-emitting color requirement, thereby being capable of being excited to emit light of required color, omitting the trouble of modulating the light source in advance or replacing different types of light source assemblies 100, having stronger adaptability to different light-emitting requirements, simplifying the structure of the whole lighting assembly and being more convenient to use.

Referring to fig. 4 and 5, in some embodiments, the fluorescent member includes:

a heat sink 321a fixed to a rear end of the mounting case 310;

and a fluorescent sheet 322a fixed to the heat sink 321a and positioned on an optical path of the illumination light, wherein the fluorescent sheet 322a can receive and reflect the illumination light, and a surface of the fluorescent sheet 322a faces the light condensing unit 330.

Specifically, the illumination light 401a (such as blue laser) transmitted by the light transmission component 200 can be emitted through the laser head 400a disposed at the rear end of the mounting housing 310, and the laser head 400a includes an optical component therein for primarily shaping the illumination light pattern; the fluorescent sheet 322a is excited to emit visible fluorescence by the illumination light 401a irradiated to the surface thereof, the fluorescence is directly condensed by the condensing unit 330 to form a visible light beam, and the illumination light 401a irradiated to the surface of the fluorescent sheet 322a can be simultaneously reflected by the fluorescent sheet 322 a; the heat sink 321a provides an installation space for the fluorescent sheet 322a, and can dissipate heat generated during fluorescent emission in time, so as to prevent the whole device from being damaged due to too high heat. Preferably, the fluorescent sheet 322a is attached to the surface of the heat sink 321a by the heat dissipation glue 323a, so as to further improve the heat dissipation effect; after the fluorescent sheet 322a is attached to the heat sink 321a, a fixing metal plate 326a may be disposed around the fluorescent sheet 322a to prevent the fluorescent sheet 322a from falling off.

Preferably, the surface of the fluorescent sheet 322a and the illumination light 401a output by the light transmission member 200 form an acute angle, so that the illumination light 401a can be directly reflected outward.

The arrangement form of the embodiment can directly reflect the illumination light 401a, and the surface of the fluorescent sheet 322a faces the light-gathering unit 330, which is beneficial to gathering the fluorescent light; the fluorescent sheet 322a is directly attached to the heat sink 321a, so that heat can be dissipated in time, thereby ensuring the fluorescent conversion efficiency.

Further, the illumination device further includes a light detection plate 325a provided on an optical path of the illumination light 401a reflected by the fluorescent sheet 322a, for detecting energy of the illumination light 401a reflected by the fluorescent sheet 322 a. This is because the illumination light 401a (for example, blue laser light) as the excitation light generally has a high energy, and when the reflected illumination light 401a has a high energy, it may cause damage to human eyes, especially, when the fluorescent sheet 322a is out of operation, the illuminating light 401a is totally reflected by the fluorescent sheet 322a, and once it is emitted to human eyes, it will cause blindness, and the energy of the illumination light 401a reflected by the fluorescent sheet 322a can be detected by the photo detector plate 325a, the light source assembly 100 may be turned off or the light emitting power may be reduced to protect the safety of the human eye when the detected light energy is large, and, in particular use, the light detecting plate 325a may be directly connected to a vehicle control part, the energy value detected by the light detecting plate 325a may be directly fed back to the vehicle control part, and the vehicle control part may automatically turn off the light source assembly 100 or turn down the light emitting power when judging that the detected energy value exceeds an internally set energy threshold.

Further, the sapphire sheet 324a covers the surface of the fluorescent sheet 322a, and the sapphire sheet 324a can increase the light transmittance, so that the illumination light 401a as the excitation light is transmitted to contact with the fluorescent sheet 322a, and the fluorescence generated by the fluorescent sheet 322a is transmitted to the light collecting unit 330.

Referring to fig. 6, in some embodiments, the fluorescent member includes a fluorescent sheet 322b positioned on a light path of the illumination light; the fluorescent sheet 322b can receive the illumination light and transmit the illumination light.

Specifically, the illumination light 401b (for example, blue laser light) transmitted by the light transmission member 200 may be emitted by the laser head 400b, the fluorescent sheet 322b may emit fluorescence after being excited by the illumination light 401b emitted to the surface thereof, and the illumination light 401b may directly pass through the fluorescent sheet 322b, so that the illumination light 401b may be directly transmitted by the arrangement of the present embodiment, and the arrangement structure is simple. Preferably, the surface of the fluorescent sheet 322b is at right angles to the illumination light 401b output by the light transmission member 200, and the surface of the fluorescent sheet 322b is at right angles to the illumination light 401b output by the light transmission member 200, so that it is advantageous to receive as much illumination light 401b as possible as excitation light, and the excess illumination light 401b can be directly emitted through the fluorescent sheet 322 b.

The sapphire layer 324b is disposed on both sides of the phosphor sheet 322b, and the sapphire layer 324b is used for heat dissipation and can increase the transmittance of the phosphor. Specifically, the sapphire layer 324b is directly attached to the fluorescent sheet 322b, so that heat generated when the fluorescent sheet 322b emits fluorescence can be timely dissipated, and the whole equipment is prevented from being damaged due to overhigh heat; meanwhile, the sapphire layer 324b may increase light transmittance, which is advantageous in that the illumination light 401b as the excitation light is transmitted to contact the fluorescent sheet 322b, and fluorescence generated from the fluorescent sheet 322b is transmitted to the light condensing unit 330.

It is understood that, in some other embodiments, the illumination assembly may be a reflective condensing lens disposed on the optical path of the illumination light output by the light transmission component 200, at this time, the illumination light directly uses visible light, and the visible light is directly emitted to the outside after passing through the reflective condensing lens to provide illumination, which is not limited by the present invention.

Referring to fig. 4, in some embodiments, the detection assembly includes an emitting module 510 and a receiving module 520, the emitting module 510 is connected to the other end of the optical transmission member 200 and is configured to emit the detection light transmitted by the optical transmission member 200 to the outside, and the receiving module 520 is configured to receive the reflected light of the detection light.

Specifically, the detection light emitted from the emitting module 510 may be reflected by the surface of the object when encountering the object, and after the reflected light is received by the receiving module 520, the orientation of the object relative to the detection assembly may be determined according to the incident angle of the received reflected light, and the distance L0 between the object and the detection assembly may be calculated according to the time interval between the reception of the reflected light and the emission of the detection light.

Referring to fig. 4, in some embodiments, the emitting module 510 is disposed at a side of the lighting assembly, and the lens unit 340 is provided with a light homogenizing region 341 for homogenizing the detecting light emitted from the emitting module 510 into a light beam with uniform light intensity distribution and emitting the light beam at a specific emission angle. Specifically, the light homogenizing region 341 may be a microstructure separately processed on the surface of the lens unit 340, and when the detection light (such as infrared laser) enters the lens unit 340, the microstructure may perform light shaping on the detection light, so that the light passing out from the lens unit 340 forms an area array laser surface with uniform light intensity distribution and a specific field angle, thereby achieving the purpose of adjusting the light path of the detection light. The emitting module 510 can be disposed on one side of the lighting assembly or disposed around the lighting assembly, and since the emitting module 510 and the lighting assembly adopt the same lens unit 340 for light adjustment, one lens unit 340 can be used for both lighting and detecting functions, thereby saving the manufacturing cost of components and making the structure more compact after combination.

In some embodiments, the homogenizing zone 341 is disposed at a side edge of the lens unit 340 or around the lens unit 340. With this arrangement, the emission module 510 is also disposed close to the side of the lens unit 340 or around the lens unit 340, which is beneficial to the overall miniaturization and intensive design of the device.

In some embodiments, the emission module 510 is fixed to the inner wall of the mounting housing 310, and the emission module 510 is separated from the illumination beam by a partition. In this embodiment, the partition is arranged to separate the emitting module 510 and the illumination light beam, and the detection light emitted by the emitting module 510 and the illumination light beam do not interfere with each other, so that the mutual interference of the light signals can be prevented, and the use effect can be reduced.

With continued reference to fig. 4, in some embodiments, the emission module 510 includes one or more infrared lasers 511, the infrared lasers 511 are fixed to the inner wall of the mounting housing 310 through fixing bases 512, and the fixing bases 512 are provided with partitions 5121 for separating the emission module 510 from the illumination light beam. As shown in fig. 7, a plurality of infrared lasers 511 are respectively fixed on the fixing base 512, and then the fixing base 512 is placed into the installation housing 310 from the rear end of the installation housing 310, the front end of the infrared laser 511 faces the light homogenizing area 341 on the lens unit 340, and the infrared laser emitted by the infrared laser 511 passes through the lens unit 340 after being subjected to light homogenizing adjustment by the light homogenizing area 341 and is uniformly emitted; the partition 5121 separates the infrared laser 511 from the illumination beam, so that the probability of mutual interference between the infrared laser emitted by the infrared laser 511 and the illumination beam is reduced, and the use effect is improved.

The infrared laser 511 may be used in conjunction with a receiving module 520, such as an infrared receiver. Preferably, the receiving module 520 is disposed at one side of the installation housing 310, and after the arrangement, the receiving module 520 is adjacent to the lighting assembly, which is beneficial to the miniaturization and intensive design of the whole device. The infrared laser 511 emits infrared laser to realize infrared area array detection, and the infrared receiver performs detection by receiving reflected light of the infrared area array laser to form flash LiDAR (floodlight area array laser radar), wherein the emitted infrared laser can be light pulse or continuous wave. When the light pulse is emitted, the pulse width of the pulse can be specially modulated, and the mutual interference among the devices can be avoided under the condition that a plurality of infrared lasers 511 operate simultaneously.

The infrared laser 511 can emit various infrared laser wavelengths, preferably 905nm, 940nm or 1550nm, and tests show that 905nm and 940nm are adopted, and the infrared laser with the wavelength is positioned at the weak part of energy distribution of each wavelength of sunlight, so that the signal-to-noise ratio of the system can be increased; the 1550nm is used for the advantages that the 1550nm is located in a part with weaker sunlight wavelength energy distribution, the 1550nm is safer for human eyes, the power output of an emitting end can be further improved, and a longer detection distance is achieved.

It is understood that in other embodiments, the detection component may also employ other radar technologies such as MEMS scanning lidar, mechanical galvanometer scanning lidar, OPA optical phased array lidar, and the like, without limitation.

Referring to fig. 3, in some embodiments, the light delivery component 200 includes an illumination conducting fiber 210 and a detection conducting fiber 220; the two ends of the illumination conducting optical fiber 210 are respectively connected with the illumination light source and the illumination assembly for transmitting the illumination light to the illumination assembly, and the two ends of the detection conducting optical fiber 220 are respectively connected with the detection light source and the detection assembly for transmitting the detection light to the detection assembly. Specifically, two ends of the illumination conducting fiber 210 can be respectively coupled to the illumination light source in the illumination assembly and the light source assembly 100, and are used for transmitting illumination light; the two ends of the detection conducting fiber 220 can be coupled to the detection component and the detection light source in the light source assembly 100, respectively, for transmitting the detection light. In other embodiments, the optical transmission component 200 includes only one optical fiber, and a plurality of optical fibers arranged in parallel in the optical fiber can be used for transmitting the illumination light and the detection light, respectively, without limitation.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A driving assistance system characterized by comprising:

2. The driving assistance system of claim 1, wherein the light detection and measurement module and the illumination module are disposed at a head of the vehicle, and the LiFi receiving module and the display module are disposed at a tail of another vehicle.

3. The driving assistance system according to claim 2, wherein the light detection and measurement module comprises a detection light source and a detection component, the detection light source is connected to generate detection light, and the detection component can emit the detection light outwards to detect and obtain the position parameter of the object;

4. The driver assistance system according to claim 3, wherein the LiFi drive module is integrated into a driver of the illumination light source.

5. The driver assistance system according to claim 3, wherein the illumination light source and the detection light source are combined to form a light source assembly, and the light source assembly is connected to the illumination component and the detection component through a light transmission member, respectively.

6. The driver assistance system according to claim 5, wherein the illumination assembly includes:

a mounting shell which forms a cavity penetrating from front to back;

7. The driver assistance system according to claim 6, wherein the fluorescent member includes:

the radiator is fixed at the rear end of the mounting shell;

8. The driving support system according to claim 7, further comprising a light detection plate provided on an optical path of the illumination light reflected by the fluorescent sheet, for detecting energy of the illumination light reflected by the fluorescent sheet.

9. The driver assistance system according to claim 6, wherein the fluorescent member includes a fluorescent sheet, the fluorescent sheet being located on an optical path of the illumination light; the fluorescent sheet may receive the illumination light and transmit the illumination light.

10. The driver assistance system according to claim 9, wherein the phosphor sheet is provided with sapphire layers on both sides.

11. The driver assistance system according to claim 6, wherein the detection unit includes a transmission module and a reception module, the transmission module is connected to the other end of the light transmission member and is configured to transmit the detection light transmitted by the light transmission member to the outside, and the reception module is configured to receive a reflected light of the detection light.

12. The system of claim 11, wherein the emitting module is disposed on a side of the illuminating assembly, and the lens unit is provided with a light homogenizing zone for homogenizing the detecting light emitted by the emitting module into a light beam having a uniform light intensity distribution and a specific emission angle.

13. The driver assistance system according to claim 12, wherein the dodging region is provided at a side edge of the lens unit or around the lens unit.

14. The driver assistance system of claim 12, wherein the emission module is fixed to the mounting housing inner wall and the emission module is separated from the illumination beam by a partition.

15. The system of claim 14, wherein the transmitter module comprises one or more infrared lasers, the infrared lasers are fixed to the inner wall of the mounting housing through a fixing base, and a partition is disposed on the fixing base for separating the transmitter module from the illumination beam.

16. The driver assistance system according to claim 5, wherein the light transmission member includes an illumination conducting optical fiber and a detection conducting optical fiber; the two ends of the illumination conduction optical fiber are respectively connected with the illumination light source and the illumination assembly and used for transmitting the light for illumination to the illumination assembly, and the two ends of the detection conduction optical fiber are respectively connected with the detection light source and the detection assembly and used for transmitting the light for detection to the detection assembly.