CN113365248B - Method, device, medium and vehicle for inter-vehicle communication - Google Patents
Method, device, medium and vehicle for inter-vehicle communication Download PDFInfo
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- CN113365248B CN113365248B CN202010153125.3A CN202010153125A CN113365248B CN 113365248 B CN113365248 B CN 113365248B CN 202010153125 A CN202010153125 A CN 202010153125A CN 113365248 B CN113365248 B CN 113365248B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
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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
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Abstract
According to example embodiments of the present disclosure, a method, apparatus, medium, and vehicle for inter-vehicle communication are provided. The method includes determining information to be transmitted in the first vehicle for guiding travel of the second vehicle and encoding the information to generate encoded information. The method further includes transmitting the encoded information from the first vehicle to the second vehicle via non-visible light, wherein the non-visible light is infrared or ultraviolet. The second vehicle decodes the encoded information after receiving the encoded information transmitted through the invisible light, and then performs a corresponding operation on the second vehicle, such as braking the vehicle, popup message, controlling light, or early warning, etc. According to the embodiment of the disclosure, communication between vehicles is realized in the form of invisible light, so that a pre-pairing process can be avoided, communication between strange vehicles is facilitated, the transmission range of information is controllable, and the direction and the distance are controllable. Therefore, the embodiments of the present disclosure can improve communication efficiency between vehicles.
Description
Technical Field
Embodiments of the present disclosure relate generally to the field of communications technology and, more particularly, relate to methods, devices, media, and vehicles for inter-vehicle communications.
Background
inter-Vehicle communication refers to wireless communication implemented between two or more vehicles, also known as Vehicle-to-Vehicle (V2V) communication. The inter-vehicle communication enables adjacent vehicles to directly establish a communication link without forwarding through a base station or a server, so that forwarding delay is reduced, and the method has good real-time performance.
Radio waves refer to electromagnetic waves in the radio frequency range that propagate in free space (including air and vacuum), with frequencies typically between 3kHz and 300 GHz. Radio waves may be applied to different communication scenarios depending on their frequency (or wavelength). Radio waves may also be used for inter-vehicle communication, for example in the form of radio broadcasts, or in the form of peer-to-peer by bluetooth or the like; however, the inter-vehicle communication method based on radio waves is low in communication efficiency.
Disclosure of Invention
According to example embodiments of the present disclosure, a method, apparatus, device, medium, and vehicle for inter-vehicle communication are provided, which can improve inter-vehicle communication efficiency.
In a first aspect of the present disclosure, a method for inter-vehicle communication is provided. The method comprises the following steps: determining information to be transmitted in the first vehicle for guiding the second vehicle to run; encoding the information to generate encoded information; and transmitting the encoded information from the first vehicle to the second vehicle by means of invisible light, wherein the invisible light comprises infrared or ultraviolet light. The communication between vehicles is realized in the form of invisible light, so that the pre-pairing process can be avoided, communication between strange vehicles is facilitated, and the transmission range of information is controllable (both the direction and the distance are controllable). Therefore, the embodiments of the present disclosure can improve communication efficiency between vehicles.
In some embodiments, wherein transmitting the encoded information from the first vehicle to the second vehicle by the invisible light comprises: the invisible light emitting device of the first vehicle is controlled to emit invisible light to the second vehicle according to the encoded information, wherein the invisible light includes high frequency infrared rays or low frequency ultraviolet rays, and the second vehicle has an invisible light receiving device. In this way, it is possible to select invisible light of a more suitable frequency, thereby enhancing directivity of transmission of invisible light while reducing influence on human beings.
In some embodiments, wherein the first vehicle is traveling in front of the second vehicle, and determining the information to be transmitted in the first vehicle for guiding the second vehicle to travel comprises: in accordance with a determination that the first vehicle is braking, an acceleration of the first vehicle at the time of braking is obtained from an electronic system of the first vehicle. In this way, the acceleration of the front vehicle brake can be timely informed to the rear vehicle, thereby being helpful for the rear vehicle to timely assist the brake and improving the driving safety.
In some embodiments, wherein encoding the information to generate encoded information comprises: converting the acceleration into an integer based on a predetermined conversion rule; converting the integer into a binary representation; and generating encoded information by adding check bits in the binary representation. In this way, the validity of the transmitted data can be ensured.
In some embodiments, wherein the non-visible light emitting device is disposed within a taillight of the first vehicle, and transmitting the encoded information from the first vehicle to the second vehicle by the non-visible light comprises: during the lighting of the tail lamp of the first vehicle, the invisible light is emitted by the invisible light emitting device. In this way, the scheme of the embodiment of the disclosure can be integrated on the basis of the existing vehicle brake bright red light, and double guarantees are provided for safe driving of the rear vehicle.
In some embodiments, wherein the first vehicle is located behind the second vehicle, and determining the information to be transmitted in the first vehicle for guiding the second vehicle to travel comprises: and determining to send information indicating the second vehicle to avoid the first vehicle according to the fact that the first vehicle and the second vehicle are located on the straight-going right-turn lane together. In this way, the front shielding vehicle can be effectively notified, the front vehicle is reminded to move to avoid the rear vehicle, and the communication efficiency between strange vehicles in the straight-going and right-turning lane scene is improved.
In some embodiments, wherein the first vehicle is traveling opposite the second vehicle, and determining the information to be transmitted in the first vehicle to direct the second vehicle to travel comprises: in accordance with a determination that the second vehicle is turning on the high beam, it is determined to transmit information indicating that the second vehicle is turning off the high beam. In this way, the vehicle running in opposite directions can be effectively informed to automatically turn off the high beam, adverse driving influence on the current vehicle is reduced, and communication efficiency between strange vehicles in the running scene in opposite directions is improved.
In some embodiments, wherein the method further comprises: and determining to send the alarm information of the first vehicle according to the fact that the first vehicle cannot be networked. In this way, it is also possible to send out an alarm message by the surrounding vehicle in case of a vehicle disconnection, helping to locate the position of the vehicle.
In a second aspect of the present disclosure, a method for inter-vehicle communication is provided. The method comprises the following steps: receiving encoded information transmitted by invisible light from a first vehicle, wherein the invisible light includes infrared or ultraviolet; decoding the encoded information to generate decoded information; and performing corresponding operation on the second vehicle according to the encoded information. The communication between vehicles is realized in the form of invisible light, so that the pre-pairing process can be avoided, communication between strange vehicles is facilitated, and the transmission range of information is controllable (both the direction and the distance are controllable). Therefore, the embodiments of the present disclosure can improve communication efficiency between vehicles.
In some embodiments, wherein receiving encoded information transmitted by non-visible light from the first vehicle comprises: the invisible light is received from the invisible light emitting device of the first vehicle by the invisible light receiving device of the second vehicle, wherein the invisible light includes high frequency infrared rays or low frequency ultraviolet rays. In this way, it is possible to select invisible light of a more suitable frequency, thereby enhancing directivity of transmission of invisible light while reducing influence on human beings.
In some embodiments, wherein decoding the encoded information to generate decoded information comprises: checking check bits in the encoded information; determining that the encoded information is invalid data according to the fact that the check bit fails to pass the check; and removing the check bits from the encoded information according to the determination that the check bits pass the check, and converting into the decoded information based on a predetermined conversion rule. In this way, the validity of the transmitted data can be ensured.
In some embodiments, wherein the first vehicle is traveling in front of the second vehicle, and performing a corresponding operation on the second vehicle comprises: determining a braking amplitude of the second vehicle according to the acceleration when the decoding information is determined to indicate the first vehicle to brake; and controlling braking of the second vehicle according to the magnitude of braking. In this way, the acceleration of the front vehicle brake can be timely informed to the system of the rear vehicle, thereby being beneficial to the rear vehicle to timely assist the brake and improving the driving safety.
In some embodiments, wherein the first vehicle and the second vehicle are co-located on a straight-going plus right-turn lane and the first vehicle is located behind the second vehicle, and performing the corresponding operation on the second vehicle comprises: and according to the determined decoding information, indicating the second vehicle to avoid the first vehicle, and outputting the decoding information in the second vehicle. In this way, the front shielding vehicle can be effectively notified, the front vehicle is reminded to move to avoid the rear vehicle, and the communication efficiency between strange vehicles in the straight-going and right-turning lane scene is improved.
In some embodiments, wherein the first vehicle is traveling opposite the second vehicle, and the corresponding operation on the second vehicle comprises: and turning off the high beam of the second vehicle and turning on the low beam of the second vehicle according to the message indicating that the decoding information indicates the second vehicle to turn off the high beam. In this way, the vehicle traveling in the opposite direction can be effectively informed to automatically turn off the high beam, the adverse driving influence on the other vehicle is reduced, and the communication efficiency between strange vehicles in the opposite traveling scene is improved.
In some embodiments, wherein the performing the respective operation on the second vehicle comprises: and sending the identity and the position of the first vehicle to a server according to the alarm information of the first vehicle indicated by the determined decoding information. In this way, it is also possible to send out an alarm message by the surrounding vehicle in case of a vehicle disconnection, helping to locate the position of the vehicle.
In a third aspect of the present disclosure, an electronic device is provided. The electronic device includes a processing unit and a memory, wherein the memory is coupled to the processing unit and stores computer program instructions. The instructions, when executed by a processing unit, cause the apparatus to perform a method according to any one of the embodiments of the first and second aspects described above.
In a fourth aspect of the present disclosure, a computer-readable storage medium is provided. The computer readable storage medium stores computer program instructions which, when executed by a processing unit, implement a method according to any one of the embodiments of the first and second aspects described above.
In a fifth aspect of the present disclosure, a vehicle is provided. The vehicle includes at least one of the invisible light emitting device and the invisible light receiving device, and the electronic apparatus according to the above third aspect.
It should be understood that what is described in this summary is not intended to limit the critical or essential features of the embodiments of the disclosure nor to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following description.
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The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:
FIG. 1 illustrates an example environment for inter-vehicle communication through invisible light according to embodiments of the present disclosure;
FIG. 2A illustrates a flow chart of a method for inter-vehicle communication according to an embodiment of the present disclosure;
FIG. 2B illustrates a flow chart of another method for inter-vehicle communication according to an embodiment of the present disclosure;
3A-3D illustrate schematic diagrams of inter-vehicle communications in a vehicle braking scenario according to an embodiment of the present disclosure;
4A-4B illustrate schematic diagrams of inter-vehicle communications in a straight-going plus right-turn lane scenario according to an embodiment of the present disclosure;
FIG. 5 illustrates an example environment for inter-vehicle communication in a subtended driving scenario in accordance with an embodiment of the present disclosure;
FIG. 6 illustrates an example environment for inter-vehicle communication in a vehicle alert scenario according to an embodiment of the present disclosure; and
fig. 7 illustrates a block diagram of an apparatus capable of implementing various embodiments of the present disclosure.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure have been illustrated in the accompanying drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather, these embodiments are provided so that this disclosure will be more thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.
In describing embodiments of the present disclosure, the term "comprising" and its like should be taken to be open-ended, i.e., including, but not limited to. The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions are also possible below.
Conventionally, communication between vehicles may be achieved using radio waves, for example, in the form of radio broadcasting, or in the form of point-to-point by bluetooth or Wi-Fi, or the like.
In the inter-vehicle communication method based on radio broadcasting, it is necessary to install a directional antenna at the front or rear of a vehicle for receiving signals transmitted from the front or rear vehicle. However, the spatial directivity of radio broadcasts is often poor and cannot communicate with only vehicles in a specific orientation, resulting in that many unrelated vehicles in the vicinity can also receive radio signals, causing interference to these unrelated vehicles. In large city traffic systems, vehicles are very dense, and communication modes with poor directivity are more likely to cause interference and influence on a large number of unrelated vehicles. Although some radio waves of high frequency have a certain spatial directivity, such radio transmission devices are generally expensive, costly, and economical. In addition, radio wave resources are precious, and legal frequency bands are required to be applied, so that the implementation difficulty is further increased.
In point-to-point methods via bluetooth or Wi-Fi, etc., inter-vehicle communication may be achieved using an in-vehicle box. For example, the signal may be transmitted outwardly by bluetooth low energy technology, such as by issuing a license plate number, brand name, etc. of the host vehicle. When two vehicles are close enough, they can detect each other, then perform a pre-pairing process, and after pairing, achieve mutual communication, such as social chat, multimedia sharing, etc. In addition, there are some conventional methods that use a cellular network to share a location, however, the cellular network needs to be forwarded through a server, and meanwhile, pre-pairing between vehicles is required, so that transmission delay is large, and use situations are limited.
As can be seen, the conventional inter-vehicle communication method has problems of poor transmission directivity or requiring pre-pairing.
To this end, embodiments of the present disclosure propose a new approach to inter-vehicle communication that does not require pre-pairing. According to the embodiment of the disclosure, communication between vehicles is realized in the form of invisible light, so that a pre-pairing process can be avoided, communication between strange vehicles is facilitated, the transmission range of information is controllable (the direction is controllable and the distance is controllable), and for example, the invisible light can be emitted to only a rear vehicle or only a front vehicle, so that a point-to-point communication process is realized. Therefore, the embodiments of the present disclosure can improve communication efficiency between vehicles. In addition, the inventors of the present application found that the manner of communication between vehicles using visible light may cause interference to the driver, and in addition, adjusting the lamp to embed communication information changes the normal function of the lamp, nor complies with industry standards and related regulations, and thus has no feasibility and adaptability. In contrast, embodiments of the present disclosure use invisible light to enable communication between vehicles without interfering with the normal driving of the driver (the driver does not see the invisible light) or without making changes that do not meet the relevant regulations. Further, the transmission range of embodiments of the present disclosure is controllable, including the transmission angle and the transmission power being controllable. Some example implementations of the present disclosure are described below with reference to fig. 1-7.
Fig. 1 illustrates an example environment 100 for inter-vehicle communication through invisible light according to embodiments of the present disclosure. As shown in the example environment 100 of fig. 1, a vehicle 110 (also referred to as a "first vehicle") and a vehicle 120 (also referred to as a "second vehicle") are traveling on a road 105. Vehicle 110 and vehicle 120 may be strange vehicles that have not previously communicated or established a communication pair. In some cases, where the vehicle 110 needs to communicate with the vehicle 120, the vehicle 110 may transmit the encoded information 115 outwardly in the form of the invisible light 113 through its invisible light emitting device 111, and the invisible light receiving device 121 of the vehicle 120 may receive the encoded information 115 encoded by the invisible light 113. The encoded information 115 may indicate, among other things, some driving parameters of the vehicle 110 (e.g., braking acceleration), social messages, or operations to be performed by the vehicle 120, etc. The invisible light emitting device 111 and the invisible light receiving device 121 may be preconfigured at the same or similar operating frequencies.
In embodiments of the present disclosure, the term "invisible light" may refer to light waves other than the visible light range, such as infrared, ultraviolet. In order to make invisible light have good directivity without causing excessive adverse effects on humans, in some embodiments, the invisible light may select a portion of infrared rays having a relatively high frequency or a portion of ultraviolet rays having a relatively low frequency. Further, given the slight difference in the visible range of the eyes of different people, the visible light ranges that can be seen are not exactly the same, and thus, some embodiments of the present disclosure may select frequencies that have a certain spacing from the frequency of visible light when selecting invisible light. In this way, the invisible light is made as invisible as possible to humans, so that normal driving of humans is not affected.
In some embodiments, the non-visible light emitting device 111 may be provided in a tail light of the vehicle 110, for example, additional special light emitting devices such as infrared light emitting diodes, ultraviolet lamps may be mounted, and the provision within the tail light reduces the impact on the vehicle's appearance. The emission angle and the emission power of the invisible light emitting device 111 may be set in advance at the time of shipment of the vehicle 110. The invisible light receiving device 121 may be multiplexed with existing devices such as a front-end vehicle recorder, a front-end parking image, a rear-end parking image, a photosensor of a vehicle for controlling a headlight switch, etc., and the invisible light receiving device 121 may be a separately installed photosensor. The invisible light receiving apparatus 121 may set a signal threshold such that a signal below the threshold will be ignored.
Since the propagation of light has a certain directivity, the vehicle 110 can control the transmission range of invisible light so that it is emitted only to the vehicle to which it is intended to be emitted. For example, the angle and the emission power of the invisible light emitting device 111 may be set such that only the vehicle 120 behind it can receive the invisible light 113, while other lanes or other vehicles behind it cannot or substantially cannot receive the invisible light 113. Therefore, invisible light is used as a communication medium, a pre-pairing process is not needed, so that the transmission range of information is controllable, and not only the transmission direction but also the transmission distance are controllable.
As shown in fig. 1, an invisible light emitting device 111 may be disposed at a rear side of the vehicle 110 for emitting invisible light toward a rear vehicle. Alternatively or additionally, the invisible light emitting device 111 may also be provided at the front side of the vehicle 110 for sending a message to the vehicle ahead. In addition, the vehicle 110 may be equipped with both the invisible light emitting device and the invisible light emitting device, so that not only invisible light can be emitted, but also invisible light can be received, and bidirectional communication is achieved. In addition, the invisible light emitting device 111 may be rotatably provided so that a driver of the vehicle 110 can control the direction of the invisible light emitting device 111 to transmit invisible light to a vehicle in a specific direction, enabling directional inter-vehicle communication.
According to the embodiment of the disclosure, the communication between the vehicles 110 and 120 is realized in the form of the invisible light 113, so that not only can the pre-pairing process be avoided and the communication between strange vehicles be facilitated, but also the transmission range of information can be controlled, and only other vehicles within a certain distance of a certain direction of the vehicle 110 can receive the invisible light 113, thereby avoiding the communication interference to irrelevant vehicles. Therefore, the embodiment of the disclosure uses the invisible light as a transmission medium, encodes information in the invisible light, has stronger directivity, and can effectively control the communication range, so that vehicles in a certain range and direction can only receive the transmitted information, and the communication efficiency between the vehicles is improved.
Fig. 2A illustrates a flow chart of a method 200 for inter-vehicle communication according to an embodiment of the present disclosure. It should be appreciated that the method 200 according to embodiments of the present disclosure may be performed by the vehicle 110 described with reference to fig. 1 or one or more electronic devices therein.
At block 202, information to be transmitted in a first vehicle for guiding a second vehicle to travel is determined. For example, vehicle 110 may determine, based on its driving action, that certain information needs to be sent to other vehicles, such as informing rear vehicle 120 that it is braking and acceleration when vehicle 110 is braking. For another example, the vehicle 110 may send social messages or alert messages to other vehicles based on driver input, such as a driver of the vehicle 110 indicating to send alert messages to vehicles in front of it.
At block 204, the information is encoded to generate encoded information. For example, the vehicle 110 encodes information to be transmitted so that the information can be transmitted by blinking of the invisible light emitting device 111. In some embodiments, the information to be transmitted may be encoded into a binary representation, and then the non-visible light emitting device 111 is controlled to emit light representing 1 and not emit light representing 0.
At block 206, encoded information is transmitted from the first vehicle to the second vehicle by non-visible light, wherein the non-visible light includes infrared or ultraviolet light. For example, the vehicle 110 emits the invisible light 113 toward the vehicle 120 through its invisible light emitting device 111. In some embodiments, the invisible light may be selected from high frequency infrared or low frequency ultraviolet and slightly spaced from the frequency distribution of the visible light by a certain range, thereby enhancing the directionality of the transmission of the invisible light while reducing the impact on humans.
Therefore, according to the method 200 of the embodiment of the present disclosure, communication between vehicles is achieved through the form of invisible light, so that not only can a pre-pairing process be avoided, communication between strange vehicles is facilitated, but also the transmission range of information is controllable (direction is controllable and distance is controllable). Therefore, the embodiments of the present disclosure can improve communication efficiency between vehicles.
Fig. 2B illustrates a flow chart 250 of another method for inter-vehicle communication according to an embodiment of the present disclosure. It should be appreciated that the method 250 according to embodiments of the present disclosure may be performed by the vehicle 120 described with reference to fig. 1 or one or more electronic devices therein.
At block 252, encoded information transmitted via non-visible light is received from a first vehicle, wherein the non-visible light includes infrared or ultraviolet light. For example, the vehicle 120 receives the encoded information 115 from the invisible light emitting device 111 of the vehicle 110 through the invisible light receiving device 121 thereof. In some embodiments, the invisible light may be selected from high frequency infrared or low frequency ultraviolet and slightly spaced from the frequency distribution of the visible light by a certain range, thereby enhancing the directionality of the transmission of the invisible light while reducing the impact on humans.
At block 254, the encoded information is decoded to generate decoded information. For example, vehicle 120 encodes encoded information 115 based on predetermined decoding rules to obtain original information about vehicle 110, such as the acceleration of vehicle 110 when encoded information 115 may be decoded to a value of, for example, 11.45m/s 2 。
At block 256, a corresponding operation is performed on the second vehicle based on the encoded information. For example, the vehicle 120 may control the auxiliary braking after learning that the front vehicle 110 is braking and its acceleration, and the magnitude of the braking may be based on the current speed of the vehicle 120, the distance from the front vehicle 110, the acceleration of the front vehicle 110, and so on. In this way, a one-time communication process between strange vehicles can be realized.
Therefore, according to the method 250 of the embodiment of the present disclosure, communication between vehicles is achieved through the form of invisible light, not only can a pre-pairing process be avoided, communication between strange vehicles is facilitated, but also the transmission range of information is made controllable (direction is controllable and distance is controllable). Therefore, the embodiments of the present disclosure can improve communication efficiency between vehicles.
In embodiments of the present disclosure, one or both of the two vehicles in inter-vehicle communication may be a manned vehicle, or may be a assisted-driving vehicle or a fully unmanned vehicle. For example, the vehicle 120 may be an unmanned vehicle, and the driving safety of the unmanned vehicle 120 can be further improved by actively transmitting the acceleration at the time of braking from the vehicle 110 to the vehicle 120.
Fig. 3A-3D illustrate a schematic diagram of inter-vehicle communication in a vehicle braking scenario, as fig. 3A illustrates a communication process 300 in a vehicle braking scenario, and fig. 3B illustrates an example environment 330 of a vehicle braking scenario, according to an embodiment of the present disclosure. In the example environment 330, the vehicle 110 and the vehicle 120 are traveling in a lane 331, where the vehicle 110 is traveling in front of the vehicle 120 and the vehicle 130 is traveling in another lane 332.
Referring to FIG. 3A, at some point, vehicle 110 is braking and the acceleration at the time of braking is obtained (302) from the electronic system of vehicle 110 (e.g., having a value of 11.45m/s 2 ) For alerting the vehicle 120 to the rear. It should be understood that the above-described values of acceleration are only one example value of the present disclosure, and are not intended to limit embodiments of the present disclosure.
The vehicle 110 then encodes (304) the acceleration to obtain encoded information. Fig. 3C illustrates an example process 350 of encoding acceleration, at block 352, to convert acceleration of the front vehicle 110 when braked to an integer according to a predetermined rule, such as converting acceleration 11.45 by 100 to an integer 1145. At block 354, the integer is converted to binary form, such as converting integer 1145 to binary 10001111001. At block 356, the parity bits are incremented in the binary to generate encoded information, e.g., the last 1-bit parity bit "1", for the receiving side to check whether the data is valid. At block 358, the invisible light transmitting device 111 on the rear side of the front vehicle 110 is controlled to blink. As indicated at 360, the light emitting element blinks may represent a 1 and the non-light emission may represent a 0. In some embodiments, in addition to encoding information, modulation may be performed to facilitate transmission. In addition, a header indicating the meaning represented by the encoded information may be included in the encoded information. In some embodiments, a start flag and/or an end flag may be added to the transmitted encoded information, or information transmitted in the form of non-visible light may be implemented between vehicles based on known or future developed protocols or standards.
Referring back to fig. 3A, by controlling the blinking of the light emitting elements of the vehicle 110, the acceleration at the time of braking of the vehicle 110 in front can be transmitted (306) from the vehicle 110 to the vehicle 120 in the form of invisible light. Referring to fig. 3B, the range of the invisible light of the vehicle 110 may be as indicated at 335, which mainly covers the rear vehicle 120 without affecting the rear vehicles 130 of other lanes. Further, by controlling the transmit power, the transmit coverage may be made to not affect other vehicles behind the vehicle 120. Further, the invisible light may be emitted during lighting of the tail lamp of the first vehicle. In this way, the scheme of the embodiment of the disclosure can be integrated on the basis of the existing vehicle brake bright red light, and double guarantees are provided for safe driving of the rear vehicle.
With continued reference to fig. 3A, the vehicle 120 receives (308) encoded information of acceleration at the time of front vehicle braking from the front vehicle 110 through its invisible light receiving device 121.
The vehicle 120 then decodes (310) the encoded information to obtain the acceleration of the front vehicle 110 when braked. Fig. 3D illustrates an example process 370 of decoding encoded information. At block 372, the non-visible light receiving device 121 of the rear vehicle 120 obtains encoded information (such as 10001111001) by receiving light (illuminated for 1, non-illuminated for 0, as shown at 360). In block 374, check bits in the encoded information are checked and if the check fails, invalid data is determined. If so, at block 376, the last 1-bit check bit is removed and converted to a decimal representation 1145. At block 378, the acceleration of the front vehicle 110 at braking is obtained to be 11.45m/s according to a predetermined conversion rule 2 For example from an integer to a fraction of 2 bits.
With continued reference to fig. 3A, the vehicle 120 may use its electronic system to determine 312 the magnitude of braking to be taken by the vehicle 120 based on the acceleration of the preceding vehicle 110. The vehicle 120 controls (314) braking of the vehicle 120 according to the calculated magnitude of braking.
In general, if the driver is not focused and cannot timely step on the brake in an emergency scene, a rear-end collision accident of the vehicle may be caused. The existing front anti-collision system only works in a mode of detecting the distance by ultrasonic waves, and cannot judge most timely. In contrast, according to the embodiment of the present disclosure, the acceleration of the front vehicle brake (i.e., the braking force of the front vehicle) can be timely notified to the system of the rear vehicle, thereby helping the anti-collision system of the rear vehicle to more timely assist the brake, reducing the possibility of accident occurrence, and thus improving the driving safety.
Fig. 4A-4B illustrate schematic diagrams of inter-vehicle communication in a straight-going plus right-turn lane scenario according to an embodiment of the present disclosure. Fig. 4A illustrates a communication process 400 of a straight-ahead right-turn lane scenario, and fig. 4B illustrates an example environment 450 of a straight-ahead right-turn lane scenario. In the example environment 450, the vehicle 140 is traveling in a straight lane 451, the vehicle 110 and the vehicle 120 are traveling in a straight plus right turn lane 452, where the vehicle 110 is traveling behind the vehicle 120. In the example environment 450, the intent of the vehicle 120 is to travel straight, so it is parking waiting for a straight traffic light, while the intent of the rear vehicle 110 is to turn right, which does not need to wait for a traffic light. According to an embodiment of the present disclosure, the rear vehicle 110 may send a message to the front vehicle 120 indicating that the vehicle 120 is clear of the vehicle 110 by means of non-visible light, the range of which is indicated as 455, which covers only the vehicle 120 directly in front of the vehicle 110 without interfering with the vehicles 140 of other lanes.
Referring to fig. 4A, vehicle 110 receives (402) driver input (e.g., enter or select message "i want to turn right, bother you forward a little, thank you") and then encodes (404) the message to generate encoded information. Then, the vehicle 110 transmits the encoded information of the message of avoiding the rear vehicle to the front vehicle 120 in the form of invisible light. After the vehicle 120 receives (408) the encoded information of the avoidance message, the encoded information is decoded (410) and then a message is output (412) to the driver within the vehicle 120. For example, the vehicle 120 may display or play the message "post-vehicle sent message" through its display or speaker, etc.: i want to turn right, bothersome to move forward a little, and thank you. In this way, the front shielding vehicle can be effectively notified, the front vehicle is reminded to move to avoid the rear vehicle, and the communication efficiency between strange vehicles in the straight-going and right-turning lane scene is improved. In contrast, the conventional approach lacks efficient communication, and even if the rear vehicle is constantly pressing the horn, the front vehicle cannot know the intention of the rear vehicle.
Fig. 5 illustrates an example environment 500 for inter-vehicle communication in a subtended driving scenario, according to an embodiment of this disclosure. As shown in fig. 5, vehicle 110 and vehicle 120 are traveling in opposite directions, with vehicle 120 traveling on lane 501 and vehicle 110 traveling on lane 502 in the opposite direction. The example environment 500 may be at night, the vehicle 110 detecting that the vehicle 120 is turning on a high beam, may emit non-visible light toward the vehicle 120 through the non-visible light transmitting device to instruct the vehicle 120 to turn off its high beam. The vehicle 120 may automatically turn off its high beam and automatically turn on the near light after receiving the above information through the invisible light receiving apparatus.
The coverage of the invisible light emitted from the vehicle 110 is shown as 555, in which the invisible light transmitting apparatus of the vehicle 110 may be rotatable, and the driver thereof may control the emission direction of the invisible light transmitting apparatus so that it can emit the invisible light to the left front target vehicle 120 to complete the communication between the vehicles. In this way, the vehicle running in opposite directions can be effectively informed to automatically turn off the high beam, adverse driving influence on the current vehicle is reduced, and communication efficiency between strange vehicles in the running scene in opposite directions is improved.
Fig. 6 illustrates an example environment 600 for inter-vehicle communication in a vehicle alert scenario in accordance with an embodiment of the present disclosure. As shown in fig. 6, the vehicle 110 and the vehicle 120 are traveling on a lane 601, where the vehicle 110 is traveling in front of the vehicle 120. At this point, the vehicle 110 finds itself currently unable to network, such as by being stolen, to disconnect the network connection (e.g., remove the network communication module), embodiments of the present disclosure may send an alarm message to surrounding vehicles (e.g., the rear vehicle 120) through invisible light, the radiation range of which is shown at 655. After receiving the warning information of the vehicle 110, the vehicle 120 may capture the vehicle 110 by a camera device (e.g., a vehicle recorder) to obtain an identity of the vehicle 110, such as a license plate number, while recording the current vehicle position. Vehicle 120 then sends the identity and location of vehicle 110 to server 610. After obtaining the above information, the server 610 may inform the owner of the vehicle 110 by means of a short message or the like. In this way, it is also possible to send out an alarm message by the surrounding vehicle in case of a vehicle disconnection, helping to locate the position of the vehicle.
Fig. 7 shows a schematic block diagram of an example device 700 that may be used to implement embodiments of the present disclosure. It should be appreciated that the device 700 may be included within the vehicle 110 or within the vehicle 120 described with reference to fig. 1-6. As shown, the device 700 includes a Central Processing Unit (CPU) 701 that can perform various suitable actions and processes in accordance with computer program instructions stored in a Read Only Memory (ROM) 702 or loaded from a storage unit 708 into a Random Access Memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the device 700 may also be stored. The CPU 701, ROM 702, and RAM 703 are connected to each other through a bus 704. An input/output (I/O) interface 705 is also connected to bus 704.
Various components in device 700 are connected to I/O interface 705, including: an input unit 706 such as a keyboard, a mouse, etc.; an output unit 707 such as various types of displays, speakers, and the like; a storage unit 708 such as a magnetic disk, an optical disk, or the like; and a communication unit 709 such as a network card, modem, wireless communication transceiver, etc. The communication unit 709 allows the device 700 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processing unit 701 performs the various methods and processes described above. For example, in some embodiments, the method may be implemented as a computer software program tangibly embodied on a machine-readable medium, such as the storage unit 708. In some embodiments, part or all of the computer program may be loaded and/or installed onto device 700 via ROM 702 and/or communication unit 709. When the computer program is loaded into RAM 703 and executed by CPU 701, one or more actions or steps of the method described above may be performed. Alternatively, in other embodiments, CPU 701 may be configured to perform the methods by any other suitable means (e.g., by means of firmware).
The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a load programmable logic device (CPLD), and so forth.
Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program code, when executed by the processor or controller, causes the functions/operations specified in the flowchart and/or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Moreover, although the acts or steps are depicted in a particular order, this should be understood as requiring that such acts or steps be performed in the particular order shown or in sequential order, or that all illustrated acts or steps be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
Although embodiments of the disclosure have been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.
Claims (16)
1. A method for inter-vehicle communication, comprising:
determining information to be transmitted in a first vehicle for guiding a second vehicle to travel, the information being information input by a driver of the first vehicle indicating an operation to be performed by the second vehicle;
encoding the information to generate encoded information; and
transmitting the encoded information from the first vehicle to the second vehicle by invisible light, which includes infrared rays or ultraviolet rays, according to the light emission direction and the light emission power controlled by the driver;
when the first vehicle cannot be networked, the alarm information of the first vehicle is determined to be sent through the invisible light, so that the second vehicle can shoot the first vehicle through the camera device after receiving the alarm information to obtain the identity of the first vehicle, the current vehicle position is recorded, and the identity and the position of the first vehicle are sent to the server.
2. The method of claim 1, wherein transmitting the encoded information from the first vehicle to the second vehicle by non-visible light comprises:
transmitting the encoded information to the second vehicle by controlling a rotatable invisible light transmitting means of the first vehicle, the invisible light including high-frequency infrared rays or low-frequency ultraviolet rays, and the second vehicle having an invisible light receiving means.
3. The method of claim 2, wherein the first vehicle is traveling in front of the second vehicle, and determining information to be transmitted in the first vehicle for guiding the second vehicle to travel comprises:
in accordance with a determination that the first vehicle is braking, an acceleration of the first vehicle at the time of braking is obtained from an electronic system of the first vehicle.
4. The method of claim 3, wherein encoding the information to generate encoded information comprises:
converting the acceleration into an integer based on a predetermined conversion rule;
converting the integer into a binary representation; and
the encoded information is generated by adding check bits in the binary representation.
5. The method of claim 1, wherein the non-visible light emitting device of the first vehicle is disposed within a tail light of the first vehicle, and transmitting the encoded information from the first vehicle to the second vehicle by non-visible light comprises:
the invisible light is emitted by the invisible light emitting device during lighting of the tail lamp of the first vehicle.
6. The method of claim 1, wherein the first vehicle is located behind the second vehicle, and determining information to be transmitted in the first vehicle for guiding the second vehicle to travel comprises:
and determining to send information indicating the second vehicle to avoid the first vehicle according to the fact that the first vehicle and the second vehicle are located on the straight-going right-turn lane together.
7. The method of claim 1, wherein the first vehicle is traveling opposite the second vehicle, and determining information to be transmitted in the first vehicle for guiding the second vehicle to travel comprises:
in accordance with a determination that the second vehicle is turning on the high beam, determining to transmit information indicating that the second vehicle is turning off the high beam.
8. A method for inter-vehicle communication, comprising:
receiving, from a first vehicle, encoded information transmitted by invisible light, the invisible light including infrared or ultraviolet, and the invisible light being emitted according to a light emission direction and a light emission power controlled by a driver, the encoded information being generated based on information specified by the driver, the information being information input by the driver indicating an operation to be performed by a second vehicle;
decoding the encoded information to generate decoded information; and
according to the decoding information, carrying out corresponding operation on the second vehicle;
wherein performing a corresponding operation on the second vehicle based on the decoded information includes:
determining that the decoded information indicates alert information for the first vehicle;
shooting the first vehicle through an image pickup device to obtain the identity of the first vehicle, and simultaneously recording the current vehicle position;
and sending the identity and the position of the first vehicle to a server.
9. The method of claim 8, wherein receiving encoded information transmitted by invisible light from the first vehicle comprises:
the encoded information is received by an invisible light receiving device of the second vehicle from a rotatable invisible light emitting device of the first vehicle, the invisible light including high frequency infrared rays or low frequency ultraviolet rays.
10. The method of claim 9, wherein decoding the encoded information to generate decoded information comprises:
checking check bits in the encoded information;
determining that the encoded information is invalid data in accordance with a determination that the check bit fails the check; and
in accordance with a determination that the check bits pass the check, the check bits are removed from the encoded information and converted into the decoded information based on a predetermined conversion rule.
11. The method of claim 8, wherein the first vehicle is traveling in front of the second vehicle, and performing a corresponding operation on the second vehicle comprises:
determining a braking amplitude of the second vehicle from the acceleration of the first vehicle in accordance with determining that the decoding information indicates the acceleration of the first vehicle when braking; and
and controlling braking of the second vehicle according to the braking amplitude.
12. The method of claim 8, wherein the first vehicle and the second vehicle are co-located on a straight-going plus right-turn lane and the first vehicle is located behind the second vehicle, and performing a corresponding operation on the second vehicle comprises:
and according to the determination that the decoding information indicates the second vehicle to avoid the first vehicle, outputting the decoding information in the second vehicle.
13. The method of claim 8, wherein the first vehicle and the second vehicle are traveling in opposite directions, and the corresponding operation on the second vehicle comprises:
in accordance with a determination that the decoded information indicates that the second vehicle turns off a high beam, the high beam of the second vehicle is turned off, and a low beam of the second vehicle is turned on.
14. An electronic device, comprising:
a processing unit; and
a memory coupled to the processing unit and storing computer program instructions that, when executed by the processing unit, cause the apparatus to perform the method of any of claims 1-13.
15. A computer readable storage medium storing computer program instructions which, when executed by a processing unit, implement the method of any one of claims 1-13.
16. A vehicle, comprising:
at least one of an invisible light emitting device and an invisible light receiving device; and
the electronic device of claim 14.
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| CN114727148A (en) * | 2022-04-18 | 2022-07-08 | 中国第一汽车股份有限公司 | Audio and video interaction method, device and equipment applied to vehicle and storage medium |
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