CN116155380A - Vehicle-mounted optical communication signal transmitting device, signal communication device and vehicle - Google Patents

Vehicle-mounted optical communication signal transmitting device, signal communication device and vehicle Download PDF

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Publication number
CN116155380A
CN116155380A CN202310442381.8A CN202310442381A CN116155380A CN 116155380 A CN116155380 A CN 116155380A CN 202310442381 A CN202310442381 A CN 202310442381A CN 116155380 A CN116155380 A CN 116155380A
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vehicle
signal
signal transmitting
lens
transmitting device
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CN116155380B (en
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阮程
汪洋
黄耀伟
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Changchun Cedar Electronics Technology Co Ltd
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Changchun Cedar Electronics Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/116—Visible light communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/502—LED transmitters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

Vehicle-mounted optical communication signal transmitting device, signal communication device and vehicle relate to the optical communication field. In order to solve the technical problems in the prior art that in the prior art, information interaction between vehicles is hindered by distance and angle and vision ability of a rear driver, information transmission is inaccurate or cannot be transmitted to a certain position frequently, and serious potential safety hazards exist, the invention provides the technical scheme as follows: an in-vehicle optical communication signal transmitting apparatus comprising: a matrix of light beads and a lens; the number of the lenses is the same as that of the lamp beads, the lenses are arranged in the direction of the light rays emitted by the lamp beads, the concave surfaces face the lamp beads, and the axes of the lenses are coincident with the axes of the lamp beads; the section of the lens is arched, and the upper surface and the lower surface of the arch are free curves which are bilaterally symmetrical; the light bead matrix is used for emitting modulated light signals, and larger propagation angles are generated through refraction of the lens. The method is suitable for information interaction between vehicles.

Description

Vehicle-mounted optical communication signal transmitting device, signal communication device and vehicle
Technical Field
Relates to the field of optical communication, in particular to a vehicle-mounted optical communication technology.
Background
In the prior art, information interaction between vehicles is generally shown in the forms of a vehicle lamp, a vehicle sticker, a loudspeaker and the like, and information such as advertisements and propaganda expression is displayed by adopting a vehicle roof LED display screen or a vehicle body picture, however, at present, all the forms are not flexible enough, the vehicle sticker and the vehicle body picture are relatively fixed and can not be changed, the vehicle roof LED display screen is set with advertisement information, important information of vehicle driving such as sudden braking of the vehicle can not be timely reflected to prompt a rear vehicle, and user experience is reduced.
The invention discloses an interaction method through a vehicle tail LED screen, which comprises the following steps: the human-computer interaction interface is provided with a display area and a plurality of interaction keys, wherein the display area displays interaction information input by a user based on the interaction keys; a vehicle body controller for acquiring at least one driving safety signal of the vehicle; the cabin controller is used for analyzing the at least one driving safety signal to generate at least one driving safety warning message, and transmitting the interaction message and/or the at least one driving safety warning message to the LED screen interaction assembly; the LED screen interaction assembly is used for analyzing at least one piece of vehicle information and/or interaction information to obtain interaction content, and displaying the interaction content on an LED screen of the LED screen interaction assembly.
However, the communication mode is still "front vehicle display," the rear vehicle driver is looking at "and is prevented from distance and angle, and the vision ability of the rear vehicle driver is often inaccurate or unable to reach the position.
The invention patent ZL202210416097.9 published in 2022, 04 and 20 discloses an external signal interaction method, an external signal interaction system, electronic equipment and an automobile of an automobile, which are used for acquiring external signals of the automobile based on external conditions in a signal interaction mode for realizing signal interaction between the automobile and pedestrians, and performing intelligent decision; based on the vehicle mode, combining a specific application scene and an external environment, and determining the function of interaction of an external signal device according to the actual conditions in the specific application scene and the external environment and the interaction objects in the intelligent decision; according to different positions of the vehicle body, determining a display mode of an interaction function, establishing an external signal interaction model of the vehicle, and realizing a multi-channel interaction process; the system, the electronic device and the automobile correspond to each other.
For the disclosed scheme, the applicant does not find out the way of realizing the signal interaction, and according to the text, if the conventional wireless signal transceiver is adopted, the signal transmission time is far longer than the response time of the brake or the driver of the vehicle because of the wireless signal delay, and if the conventional wireless signal transceiver adopts an optical communication mode, no way of ensuring that any angle can be interconnected with the hand-held terminal of the pedestrian is adopted, so that the technical means provided by the scheme is unreliable and has serious potential safety hazards.
The optical wireless communication is used as a novel communication technology, has the advantages of optical fiber communication and mobile communication, can realize broadband transmission, is flexible in networking, does not need frequency application, and is good in electromagnetic interference resistance and confidentiality, so that the research on wireless optical communication is widely paid attention to nowadays. The light source for medium-short distance optical wireless communication has the advantages of low power consumption, long service life, low cost and the like.
Disclosure of Invention
In order to solve the information interaction among vehicles in the prior art, the information such as advertisement, propaganda expression and the like is generally displayed in the forms of a vehicle lamp, a vehicle paste, a loudspeaker and the like, and a roof LED display screen or a vehicle body picture is also adopted to display the information such as advertisement, propaganda expression and the like, however, at present, all the forms are not flexible enough, the vehicle paste and the vehicle body picture are relatively fixed and cannot be changed, the roof LED display screen is set to be advertisement information, important information of vehicle driving such as sudden braking of the vehicle and the like cannot be timely reflected to prompt a rear vehicle, the use experience of a user is reduced, and the communication mode in the prior art is obtained in the form of 'front vehicle display, rear vehicle driver observes', distance and angle are hindered, and the vision ability of the rear vehicle driver frequently occurs, the information transmission is inaccurate or the situation that the position cannot be transmitted is serious potential safety hazard exists, and the technical scheme provided by the invention is as follows:
an in-vehicle optical communication signal transmitting apparatus, the apparatus comprising: a matrix of light beads and a lens;
the number of the lenses is the same as that of the lamp beads, the lenses are arranged in the direction of the light emitted by the lamp beads, the concave surfaces face the lamp beads, and the axes of the lenses are coincident with the axes of the lamp beads;
the section of the lens is arched, and the upper surface and the lower surface of the arch are free curves which are symmetrical left and right;
the light bead matrix is used for emitting modulated light signals, and larger propagation angles are generated through refraction of the lens.
Further, there is provided a preferred embodiment wherein, in the arch shape of the cross section of the lens,
the free curve of the upper surface is represented by the formula
Figure SMS_1
Obtained by->
Figure SMS_2
Represents the length along the X-axis, < >>
Figure SMS_3
Represents a length along the Y-axis, -73 +.>
Figure SMS_4
≤25，-12≤/>
Figure SMS_5
≤24，-5≤/>
Figure SMS_6
≤6；
The free curve of the lower surface is represented by the formula
Figure SMS_7
Obtained by->
Figure SMS_8
Represents the length along the X-axis, < >>
Figure SMS_9
Representing the length along the Y-axis, -2500 +.>
Figure SMS_10
≤80，-19≤/>
Figure SMS_11
≤90，-9≤/>
Figure SMS_12
≤6。
Further, a preferred embodiment is provided, wherein the bead matrix is a mini-LED bead matrix.
Further, a preferred embodiment is provided, wherein the bead matrix comprises RGB trichromatic mini-LED light emitting chips.
Further, a preferred embodiment is provided, wherein the chip size is not less than 50um, and the chip dot pitch is 1.5mm or less.
Further, there is provided a preferred embodiment wherein the distance from the top surface apex to the bottom of the lens 4 is 0.5mm or less and the distance from the bottom surface apex to the bottom of the lens is 0.4mm or less in the cross section of the lens.
Further, a preferred embodiment is provided, wherein the modulation mode of the optical signal is specifically modulation by an OOK modulation technique.
Based on the same inventive concept, the invention also provides a vehicle-mounted signal communication device, which comprises a signal transmitting device and a signal receiving device,
the signal transmitting device and the signal receiving device are arranged on the vehicle;
the signal transmitting device is used for transmitting the signals modulated by the upper computer in a mode of optical signals, and the signal receiving device on the other vehicle is used for receiving the optical signals and demodulating the optical signals by the upper computer of the vehicle;
the signal transmitting device is the vehicle-mounted optical communication signal transmitting device.
Further, there is provided a preferred embodiment wherein the signal emitting device is provided at any one or more of a tail light, a head light, a logo light, a grille light and a side wing light of the vehicle.
Based on the same inventive concept, the invention also provides a vehicle, wherein the vehicle comprises the vehicle-mounted signal communication device, and the signal receiving device is arranged adjacent to the transmitting device.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
the vehicle-mounted optical communication signal transmitting device provides a brand new mode for realizing information interaction between vehicles, is not influenced by distance, vehicle position and vision condition of a driver, realizes communication through the modulated optical signals, and greatly improves signal transmission capacity and speed.
According to the vehicle-mounted optical communication signal transmitting device, the lens 4 is designed, so that the lens 4 can refract an optical signal which can be originally diffused in a small angle to 180 degrees to be diffused, the transmitting angle is greatly increased, and information interaction between vehicles is not influenced by the positions of the vehicles.
The vehicle-mounted signal communication device provided by the invention is completely different from the mode of information transmission through the display screen in the prior art by sending information through the modulated optical signal and demodulating the modulated optical signal, wherein the vehicle which needs to receive the information is right behind the vehicle which sends the information and is influenced by the distance and the eyesight of a driver of a rear vehicle, and the information is easy to be transmitted in place.
The method is suitable for information interaction between vehicles.
Drawings
Fig. 1 is a schematic cross-sectional view of a lens 4 according to the first embodiment mounted on a lamp bead;
fig. 2 is a schematic diagram of the upper and lower surfaces in a cross-sectional view of the lens 4 mentioned in the second embodiment;
fig. 3 is a schematic cross-sectional view of a lens 4 corresponding to each bead on a mini-LED bead matrix according to the third embodiment;
fig. 4 is a schematic view of a light distribution curve of the lens 4 mentioned in the eleventh embodiment;
fig. 5 is a schematic view of a light distribution curve of a light emitting chip mentioned in the eleventh embodiment;
FIG. 6 is a schematic block diagram of a vehicle-to-vehicle information interaction system as referred to in embodiment eleven;
FIG. 7 is a schematic block diagram of a vehicle-to-person information interaction system as referred to in embodiment eleven;
FIG. 8 is a schematic block diagram of a vehicle and traffic system information interaction system as referred to in embodiment eleven;
wherein 1 denotes a chip substrate 1,2 denotes a chip package layer 2,3 denotes a chip light source 3,4 denotes a lens 4, a denotes a chip period, B denotes a distance from an apex to a bottom of an upper surface of the lens, C denotes a distance from an apex to a bottom of a lower surface of the lens, D denotes a free curve of the upper surface, and E denotes a free curve of the lower surface.
Detailed Description
In order to make the advantages and benefits of the technical solution provided by the present invention more apparent, the technical solution provided by the present invention will now be described in further detail with reference to the accompanying drawings, in which:
in a first embodiment, described with reference to fig. 1, the present embodiment provides an in-vehicle optical communication signal transmitting apparatus, including: a matrix of light beads and lenses 4;
the number of the lenses 4 is the same as that of the lamp beads, the lenses are arranged in the direction of emitting light rays by the lamp beads, the concave surfaces face the lamp beads, and the axes of the lenses 4 are coincident with the axes of the lamp beads;
the section of the lens 4 is arched, and the upper surface and the lower surface of the arch are free curves which are symmetrical left and right;
the light bead matrix is used for emitting modulated light signals, and larger propagation angles are generated through refraction of the lens 4.
As shown in fig. 1, the light-emitting lamp bead includes a chip substrate 1, a chip packaging layer 2, and a chip light source 3, wherein a chip period a: a is less than or equal to 1.5mm, and the period is specifically the maximum unit size of a single chip; the distance B from the top point to the bottom of the upper surface of the lens is less than or equal to 0.5mm; c is less than or equal to 0.4mm from the top point to the bottom of the lower surface of the lens;
the chip packaging layer 2 is flush with the luminous surface of the chip light source 3, the lens 4 array corresponds to the lamp beads one to one, and the lens is fixed through an external structure clamping groove or a bracket.
In the second embodiment, the present embodiment is described with reference to fig. 2, and the present embodiment is further limited to the vehicle-mounted optical communication signal transmitting device provided in the first embodiment, in the arch shape where the cross section of the lens 4 is located,
the free curve of the upper surface is represented by the formula
Figure SMS_13
Obtained by->
Figure SMS_14
Represents the length along the X-axis, < >>
Figure SMS_15
Represents a length along the Y-axis, -73 +.>
Figure SMS_16
≤25，-12≤/>
Figure SMS_17
≤24，-5≤/>
Figure SMS_18
≤6；
The free curve of the lower surface is represented by the formula
Figure SMS_19
Obtained by->
Figure SMS_20
Represents the length along the X-axis, < >>
Figure SMS_21
Representing the length along the Y-axis，-2500≤/>
Figure SMS_22
≤80，-19≤/>
Figure SMS_23
≤90，-9≤/>
Figure SMS_24
≤6。
In a third embodiment, the present embodiment is further defined by the vehicle-mounted optical communication signal transmitting device provided in the first embodiment, and the light bead matrix is a mini-LED light bead matrix.
The fourth embodiment is further defined on the vehicle-mounted optical communication signal transmitting device provided by the third embodiment, where the bead matrix includes RGB three primary colors mini-LED light emitting chips.
In the fifth embodiment, the vehicle-mounted optical communication signal transmitting device provided in the fourth embodiment is further defined, the size of the chip is not smaller than 50um, and the chip point pitch is less than 1.5 mm.
In the sixth embodiment, the vehicle-mounted optical communication signal transmitting device provided in the first embodiment is further defined, wherein in a cross section of the lens 4, a distance from an upper surface vertex to a bottom of the lens 4 is 0.5mm or less, and a distance from a lower surface vertex to the bottom of the lens 4 is 0.4mm or less.
In a seventh embodiment, the present embodiment is further defined by the vehicle-mounted optical communication signal transmitting apparatus provided in the first embodiment, where the modulation mode of the optical signal is specifically modulation by an OOK modulation technique.
An eighth embodiment provides an in-vehicle signal communication apparatus, the apparatus including a signal transmitting apparatus and a signal receiving apparatus,
the signal transmitting device and the signal receiving device are arranged on the vehicle;
the signal transmitting device is used for transmitting the signals modulated by the upper computer in a mode of optical signals, and the signal receiving device on the other vehicle is used for receiving the optical signals and demodulating the optical signals by the upper computer of the vehicle;
the signal transmitting device is the vehicle-mounted optical communication signal transmitting device provided in any one of the first to seventh embodiments.
Specific:
the signal receiving apparatus may be provided with a lens.
The overall implementation process of the vehicle-mounted optical communication comprises the following steps: by utilizing the characteristic of high-speed frequency response of the LED device, the communication information is loaded on the mini-LED light source so that the mini-LED light source can emit light signals with alternately brightness which cannot be perceived by human eyes, then the photosensitive device converts the received light signals into electric signals, further subsequent processing and recovery are carried out, and finally the specific communication information is obtained. The information interaction between the vehicles can be completed through the LED lamp and the light receiver, and the vehicles and roadside facilities can also use the LED street lamp, the LED lamp, the light receiver or the pedestrian handheld device to complete communication.
The vehicle-mounted signal communication device mainly comprises a signal transmitting device, a visible light channel and a signal receiving device. After the user sends information to the system, the signal transmitting device of the system transmits the optical signal through the modulated LED light source, the optical signal reaches the signal receiving device of the system after being transmitted through the optical channel, the signal receiving device of the system converts the optical signal into an electric signal through demodulation, and then the electric signal is presented to the user of the receiver after a certain process, and the specific presentation mode can be through any display screen, voice broadcasting or the like.
The signal transmitting device body is an electro-optical conversion circuit which modulates information of a vehicle such as a vehicle speed, a vehicle distance, a position, etc. as an input to convert the information into an optical signal of a light-dark change in the form of a bit stream electric signal. The signal transmitting device mainly comprises a modulator and an optical transmitter, wherein the modulator is used for converting an input electric signal into a corresponding electric signal for controlling the optical transmitter, and the optical transmitter emits an optical signal with brightness change after receiving the control signal sent by the modulator. The core function of the signal receiving device is to restore the received optical signal to the corresponding original electrical signal. The signal receiving device mainly comprises a light detector and a demodulator, wherein the light detector is used for sensing the optical signal of the signal transmitting device and converting the output of the optical signal into an electric signal, and the demodulator is used for demodulating the electric signal output by the light detector into an electric signal suitable for subsequent signal processing.
The LED light source of the transmitting end in the vehicle-mounted signal communication device adopts a Mini-LED matrix, and the signal modulation of the transmitting end is realized through an OOK modulation technology. The photosensitive device of the signal receiving device can be a camera or a photodiode
Because the direct current gain of the channel of the vehicle-mounted optical communication is inversely proportional to the distance between the receiving and transmitting ends, and the direct current gain of the visible light channel is also influenced by the emitting angle of the LED light source and the receiving angle of the photosensitive device, the LED light source and the photosensitive device of the receiver are on the same straight line as much as possible, and the communication performance of the system is improved.
And the user operates wireless equipment such as a mobile phone or a tablet personal computer and searches and connects with the system communication Wifi signal. The Web interface of the system is then logged in, on which the user can select the corresponding function, for example: chat with other vehicles, and watch road conditions in front of the front vehicle. The communication information is transmitted in the air in the form of visible light, and prompt or interaction content is displayed on the Mini-LED of the vehicle through the control of the system.
In a ninth aspect, the present embodiment provides an in-vehicle signal communication device, wherein the signal transmitting device is disposed at any one or more of a tail lamp, a head lamp, a logo lamp, a grille lamp and a side wing lamp of the vehicle.
In a tenth aspect, the present embodiment provides a vehicle including the in-vehicle signal communication device provided in the ninth aspect, wherein the signal receiving device is provided adjacent to the transmitting device.
An eleventh embodiment, described in conjunction with fig. 4-5, provides a specific example of the vehicle-mounted signal communication device, where:
short side length of light source: 0.05mm; the short side, i.e. the width in the chip size;
chip period a: a=0.4 mm;
the distance B from the top to the bottom of the upper surface of the lens is b=0.09 mm;
c=0.06 mm;
the free curve D of the upper surface is given by
Figure SMS_25
；
The free curve E of the lower surface is given by
Figure SMS_26
；
Fig. 4 is a light distribution curve of the lens 4, in which the horizontal direction light distribution angle is 180 °;
fig. 5 shows the light distribution curve of the chip light source 3, which is lambertian light distribution, and the light distribution angle is 120 °.
The twelfth embodiment, which is described with reference to fig. 6 to 8, provides several specific application scenarios for the above-mentioned vehicle-mounted signal communication device, where:
1. the method adopts the optical communication technology to be applied to a vehicle-mounted light display device (an external front lamp and a tail lamp device) to realize the instant information interaction among vehicles, people and traffic systems, wherein the information interaction among vehicles comprises lane changing, braking, driving exercise and special vehicle warning reminding; the information interaction between the vehicle and the person comprises parking guidance, vehicle identification and yield indication; the information interaction between the vehicles and the traffic system realizes road environment perception, remote driving, formation driving and the like, achieves 'island information' interconnection through DSRC, 5G, LTE-V and other communication technologies and Internet technologies, and is changed from the past single vehicle intelligence into organized multi-intelligent high-efficiency cooperative.
2. The information interaction system between vehicles comprises a sensing communication unit, a control unit and a display unit, wherein the sensing unit comprises an optical communication detection module and a camera module, the control unit comprises a BCM vehicle body control module and a signal decoding module, and the display unit comprises a Mini-LED display module. The information interaction between vehicles comprises lane changing, braking, driving training, warning reminding of special vehicles and other lamp language changes, a reminding lamp language light signal is output at a display unit, and signal processing is carried out through a sensing communication unit to remind and control the vehicles to reasonably avoid; 3. the information interaction system between the vehicle and the person comprises a perception communication unit, a control unit and a display unit, wherein the perception unit comprises a personal mobile terminal, an optical communication detection module and a camera module, the control unit comprises a BCM vehicle body control module and a signal decoding module, and the display unit consists of a Mini-LED display module. The vehicle remote control can be realized through the personal mobile terminal, the short-distance (< 5 m) vehicle induction recognition can be realized through the optical communication detection module and the camera module, the driving intellectualization and the convenience are improved, and the display unit displays characters, pictures or videos according to different scenes.
4. The vehicle and traffic system information interaction system comprises a vehicle body system and a traffic system transmitting and identifying module, wherein the vehicle body system comprises a sensing communication unit, a control unit and a display unit, and the traffic system comprises a transmitting signal module and a camera module. The traffic system transmitting signal module transmits signals, the display unit is controlled by the vehicle-mounted signal processing system to display and remind information, and the traffic system camera module recognizes the display information to display and remind traffic conditions.
5. The display unit can be arranged on the front, the back and the side of the automobile
6. The display unit part consists of RGB three primary colors Mini-LED luminous chips, the chip size is 100 x 50um, the chip point distance is less than 1.5mm, and the fine display can be realized through array arrangement and single-point control.
7. The control unit chip and the perception and identification module can be integrated in any area around and inside the display unit, so that high-integration display is realized.
8. The display unit can adopt different chip array combinations of RGB to realize full-color and monochromatic display, and the display effect is diversified.
The technical solution provided by the present invention is described in further detail through several specific embodiments, so as to highlight the advantages and benefits of the technical solution provided by the present invention, however, the above specific embodiments are not intended to be limiting, and any reasonable modification and improvement, reasonable combination of embodiments, equivalent substitution, etc. of the present invention based on the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims (10)

1. An in-vehicle optical communication signal transmitting apparatus, characterized in that the apparatus comprises: a matrix of light beads and a lens;
the number of the lenses is the same as that of the lamp beads, the lenses are arranged in the direction of the light emitted by the lamp beads, the concave surfaces face the lamp beads, and the axes of the lenses are coincident with the axes of the lamp beads;
the section of the lens is arched, and the upper surface and the lower surface of the arch are free curves which are symmetrical left and right;
the light bead matrix is used for emitting modulated light signals, and larger propagation angles are generated through refraction of the lens.
2. The vehicle-mounted optical communication signal transmitting apparatus according to claim 1, wherein the lens has a cross-section in an arch shape,
the free curve of the upper surface is represented by the formula
Figure QLYQS_1
Obtained by->
Figure QLYQS_2
Represents the length along the X-axis, < >>
Figure QLYQS_3
Represents a length along the Y-axis, -73 +.>
Figure QLYQS_4
≤25，-12≤/>
Figure QLYQS_5
≤24，-5≤/>
Figure QLYQS_6
≤6；
The free curve of the lower surface is represented by the formula
Figure QLYQS_7
Obtained by->
Figure QLYQS_8
Represents the length along the X-axis, < >>
Figure QLYQS_9
Representing the length along the Y-axis, -2500 +.>
Figure QLYQS_10
≤80，-19≤/>
Figure QLYQS_11
≤90，-9≤/>
Figure QLYQS_12
≤6。
3. The vehicle-mounted optical communication signal transmitting device according to claim 1, wherein the bead matrix is a mini-LED bead matrix.
4. The vehicle-mounted optical communication signal transmitting device according to claim 3, wherein the bead matrix comprises RGB trichromatic mini-LED light emitting chips.
5. The device according to claim 4, wherein the chip has a size not smaller than 50um and a chip dot pitch of 1.5mm or less.
6. The in-vehicle optical communication signal transmitting apparatus according to claim 1, wherein in a cross section of the lens, a distance from an upper surface vertex to a bottom of the lens is 0.5mm or less and a distance from a lower surface vertex to the bottom of the lens is 0.4mm or less.
7. The vehicle-mounted optical communication signal transmitting device according to claim 1, wherein the modulation mode of the optical signal is specifically modulation by an OOK modulation technique.
8. The vehicle-mounted signal communication device is characterized by comprising a signal transmitting device and a signal receiving device, wherein the signal transmitting device and the signal receiving device are arranged on a vehicle;
the signal transmitting device is used for transmitting the signals modulated by the upper computer in a mode of optical signals, and the signal receiving device on the other vehicle is used for receiving the optical signals and demodulating the optical signals by the upper computer of the vehicle;
the signal transmitting device is a vehicle-mounted optical communication signal transmitting device according to any one of claims 1 to 7.
9. The vehicle-mounted signal communication device according to claim 8, wherein the signal transmitting device is provided at any one or more of a tail lamp, a head lamp, a logo lamp, a grille lamp and a side wing lamp of the vehicle.
10. A vehicle characterized in that it comprises the in-vehicle signal communication device according to claim 9, the signal receiving device being disposed adjacent to the transmitting device.
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