CN109466425B - Vehicle headlamp control system and method, vehicle, and storage medium - Google Patents
Vehicle headlamp control system and method, vehicle, and storage medium Download PDFInfo
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- CN109466425B CN109466425B CN201811409067.5A CN201811409067A CN109466425B CN 109466425 B CN109466425 B CN 109466425B CN 201811409067 A CN201811409067 A CN 201811409067A CN 109466425 B CN109466425 B CN 109466425B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
- B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/40—Indexing codes relating to other road users or special conditions
- B60Q2300/42—Indexing codes relating to other road users or special conditions oncoming vehicle
Abstract
The invention discloses a vehicle headlamp control system and method, a vehicle and a storage medium, wherein the vehicle headlamp control system comprises a first acquisition device, a second acquisition device and a control device, wherein the first acquisition device is used for acquiring the environmental noise in front of the vehicle; the second acquisition device is used for acquiring the environmental noise behind the vehicle; and a control device for recognizing whether an engine voiceprint exists in the ambient noise in front of the vehicle and the ambient noise behind the vehicle, extracting first sound intensity information of the engine from the ambient noise in front of the vehicle and second sound intensity information of the engine from the ambient noise behind the vehicle when the engine voiceprint exists in the ambient noise, and outputting a headlamp control signal according to the first sound intensity information and the second sound intensity information to control a headlamp of the vehicle. The system, the method and the vehicle have the advantages that the information acquisition is slightly influenced by weather conditions, the sensitivity is high, and the distance light changing control can be automatically realized.
Description
Technical Field
The invention belongs to the technical field of vehicles, and particularly relates to a vehicle headlamp control method, a vehicle headlamp control method and a storage medium.
Background
With the continuous development of the vehicle industry, the vehicle safety gradually becomes a topic of concern of people, night driving accounts for one fourth of the whole highway traffic, and the lighting effect of the road directly influences the traffic safety of night driving. At present, for the conversion of far and near lights of vehicles, a manual operation mode of a manual deflector rod is mostly adopted, the sight distance is short, and partial drivers easily forget light changing operation when meeting, so that dazzling of drivers of oncoming vehicles is caused, and further accidents are caused.
In order to solve the above problems, the related art discloses a fully automatic light switching device for safe driving at night, as shown in fig. 1, the device includes a processor 10 ', a memory chip 20 ' connected to the processor 10 ', a camera module 30 ' connected to the memory chip 20 ' and disposed at the front end of the automobile, the camera module 30 ' including a camera and a camera driving circuit for driving the camera, a lamp switching control circuit 40 ' connected to the processor 10 ', the lamp switching control circuit 40 ' respectively connected to the high beam and the low beam of the automobile, a USB interface circuit 50 ', a TF interface circuit 60 ' and a TFT output circuit 70 ' connected to the processor 10 ', the device can determine whether the high beam or the low beam is on according to the brightness of the lamp of the opposite vehicle, and further perform corresponding high beam and low beam switching on the own vehicle, so that the vehicle mounted with the device can automatically switch from the high beam to the low beam during passing of the meeting vehicle, the accident that the distance light caused in can effectual reduction meeting to the device is more accurate than the device that adopts photo resistance to judge, can not receive night and fog influence, judges more accurately, is a full-automatic light auto-change over device who is more fit for promoting.
However, the optical camera is easy to be interfered by weather in practical application, especially when dust or haze is serious, the light transmission is weakened by dust and particles, the light sensation acquisition sensitivity of the optical camera is reduced, and the automatic light changing of far and near light can not be realized even when the light sensation acquisition sensitivity of the optical camera is reduced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first object of the present invention is to provide a vehicle headlamp control system, which can automatically switch between high and low beams without being affected by weather.
A second object of the invention is to propose a vehicle comprising a system as described above.
A third object of the present invention is to provide a vehicle headlamp control method.
A fourth object of the invention is to propose a storage medium.
In order to achieve the above object, a vehicle headlamp control system according to an embodiment of a first aspect of the present invention includes: the first acquisition device is used for acquiring the environmental noise in front of the vehicle; the second acquisition device is used for acquiring the environmental noise behind the vehicle; and a control device for identifying whether an engine voiceprint exists in the ambient noise in front of the vehicle and the ambient noise at the rear of the vehicle, extracting first sound intensity information of the engine from the ambient noise in front of the vehicle and second sound intensity information of the engine from the ambient noise at the rear of the vehicle when the engine voiceprint exists in the ambient noise, and outputting a headlamp control signal according to the first sound intensity information and the second sound intensity information to control a headlamp of the vehicle.
According to the vehicle headlamp control system provided by the embodiment of the invention, the first acquisition device and the second acquisition device are adopted to acquire the noise signals, the engine voiceprint recognition is carried out according to the noise signals, the coming vehicle condition is judged through the sound intensity information when the vehicle is judged to be in order to automatically control the headlamp, the manual intervention is not needed, and the non-optical system is adopted to acquire the information, so that the interference of other light rays or severe weather is avoided, and the vehicle headlamp control system is more sensitive.
In some embodiments, the control device is specifically configured to, when outputting the headlamp control signal according to the first sound intensity information and the second sound intensity information, determine whether there is an incoming vehicle in front of or behind the vehicle according to the first sound intensity information and the second sound intensity information, calculate a first sound intensity variation according to the first sound intensity information, calculate a second sound intensity variation according to the second sound intensity information, determine an incoming vehicle direction according to the first sound intensity variation and the second sound intensity variation, and output the headlamp control signal according to the incoming vehicle direction when determining that there is an incoming vehicle in front of or behind the vehicle.
In some embodiments, the control device is specifically configured to determine whether there is an incoming vehicle ahead or behind the vehicle when determining whether there is an incoming vehicle ahead or behind the vehicle according to the first sound intensity information and the second sound intensity information, and determine that there is an incoming vehicle ahead or behind the vehicle when determining that the sound intensity signals are synchronously increased according to the first sound intensity information and the second sound intensity information.
In some embodiments, the control device is specifically configured to, when determining the direction of a vehicle coming from the vehicle according to the first sound intensity variation and the second sound intensity variation, determine that there is a vehicle coming from the front of the vehicle when the first sound intensity variation is larger than the second sound intensity variation, or determine that there is a vehicle coming from the rear of the vehicle or a vehicle meeting is ended when the first sound intensity variation is smaller than or equal to the second sound intensity variation.
In some embodiments, the control device outputs the headlamp control signal according to the incoming direction, specifically, when there is an incoming vehicle ahead of the vehicle, the control device outputs a control signal that the low beam lamp of the vehicle is turned off and the high beam lamp of the vehicle is turned off, or when there is an incoming vehicle behind the vehicle, the control device outputs a control signal that the low beam lamp of the vehicle is turned off and the high beam lamp of the vehicle is turned off, or when there is an incoming vehicle behind the vehicle, the control device maintains the currently output control signal for the headlamp of the vehicle. Therefore, the light changing control of meeting and meeting ending and the control of the front lamp of the rear vehicle during overtaking are realized.
In some embodiments, the first acquisition device is installed at the front left part of the vehicle, and the second acquisition device is installed at the rear left part of the vehicle, so that the sensitivity of information acquisition can be improved in regions suitable for right-driving mechanisms.
In some embodiments, the vehicle headlamp control system further comprises a vehicle networking device, and the vehicle networking device is used for sending a high beam turn-off reminding signal to a vehicle coming in front of the vehicle when receiving a user input instruction so as to remind a driver of the vehicle coming in front to switch the headlamp light, so that the safety during meeting is improved.
In some embodiments, the vehicle headlamp control system further comprises a switch device for receiving a user trigger command and activating the vehicle headlamp control system.
In order to achieve the above object, a vehicle according to an embodiment of a second aspect of the present invention includes a headlamp, a body controller, and a vehicle headlamp control system according to an embodiment of the first aspect.
According to the vehicle provided by the embodiment of the invention, by adopting the vehicle headlamp control system disclosed by the embodiment of the first aspect, the automatic control of the headlamp can be realized according to different incoming vehicle conditions, the sensitivity is high, and the influence of weather conditions is avoided.
In order to achieve the above object, a vehicle headlamp control method according to an embodiment of a third aspect of the present invention, a vehicle includes: collecting ambient noise in front of a vehicle and collecting ambient noise behind the vehicle; identifying whether an engine voiceprint is present in ambient noise in front of the vehicle and ambient noise behind the vehicle; when the engine voiceprint exists in the environmental noise, extracting first sound intensity information of the engine from the environmental noise in front of the vehicle, and extracting second sound intensity information of the engine from the environmental noise in back of the vehicle; and outputting a headlamp control signal according to the first sound intensity information and the second sound intensity information so as to control a headlamp of the vehicle.
According to the vehicle headlamp control method provided by the embodiment of the invention, the noise signal is collected, the engine voiceprint recognition is carried out according to the noise signal, the coming vehicle condition is judged through the sound intensity information when the vehicle is judged to be present, the automatic control of the headlamp is realized according to different coming vehicle conditions without human intervention, and the noise collection adopts a non-optical system, so that the interference of other light rays or severe weather is avoided, and the vehicle headlamp control method is more sensitive.
In some embodiments, outputting the headlamp control signal according to the first sound intensity information and the second sound intensity information specifically includes: judging whether an incoming vehicle exists in front of or behind the vehicle according to the first sound intensity information and the second sound intensity information; when an incoming call is judged to be in front of or behind the vehicle, calculating a first sound intensity variation according to the first sound intensity information, calculating a second sound intensity variation according to the second sound intensity information, and judging an incoming direction according to the first sound intensity variation and the second sound intensity variation; and outputting the headlamp control signal according to the incoming vehicle direction.
In some embodiments, the determining whether there is an incoming vehicle ahead or behind the vehicle according to the first sound intensity information and the second sound intensity information specifically includes: and judging that the vehicle comes in front of or behind the vehicle when judging that the sound intensity signal is synchronously amplified according to the first sound intensity information and the second sound intensity information.
In some embodiments, the determining the direction of the vehicle according to the first sound intensity variation and the second sound intensity variation specifically includes: judging that an incoming vehicle is in front of the vehicle when the first sound intensity variation is larger than the second sound intensity variation; or judging that the vehicle comes or the vehicle meeting is finished behind the vehicle when the first sound intensity variation is smaller than or equal to the second sound intensity variation.
In some embodiments, the outputting the headlamp control signal according to the incoming vehicle direction specifically includes: when a vehicle comes in front of the vehicle, outputting a control signal that a low beam light of the vehicle illuminates and a high beam light of the vehicle is turned off; or, after the meeting of the vehicles is finished, a control signal that the low beam light of the vehicle is turned off and the high beam light of the vehicle is illuminated is output, or when there is an incoming call behind the vehicles, the control signal that is currently output to the headlights of the vehicles is maintained. Therefore, the light changing control of meeting and meeting ending and the control of the front lamp of the rear vehicle during overtaking are realized.
In some embodiments, collecting ambient noise forward of the vehicle and collecting ambient noise rearward of the vehicle specifically comprises: collecting ambient noise in front of the vehicle by a first collecting device mounted at the front left part of the vehicle; the second acquisition device arranged at the left rear part of the vehicle acquires the environmental noise at the rear part of the vehicle, is suitable for regions with right driving mechanisms, and can improve the sensitivity of information acquisition.
In some embodiments, the vehicle headlamp control method further includes: when receiving user input instruction, send through the car networking and close high beam warning signal to the place ahead of vehicle comes, security when improving the meeting.
In order to achieve the above object, a non-transitory computer-readable storage medium according to a fourth aspect of the present invention stores thereon a computer program that, when executed by a processor, can implement the vehicle headlamp control method according to the third aspect.
According to the non-transitory computer-readable storage medium of the embodiment of the present invention, a basis is provided for the implementation of the control method for the vehicle headlamp by storing a computer program that can implement the control method for the vehicle headlamp of the above third aspect embodiment.
Drawings
Fig. 1 is a block diagram of a fully automatic light switching device for safe driving at night in the related art;
FIG. 2 is a block diagram of a vehicle headlamp control system according to one embodiment of the present invention;
FIG. 3 is a schematic illustration of a discretized acoustic signal in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of an installation location of a collection device according to one embodiment of the present invention;
FIG. 5 is a block diagram of a vehicle headlamp control system according to one embodiment of the present invention;
FIG. 6 is a schematic signal flow diagram of a process of a vehicle headlamp control system according to an embodiment of the present invention;
FIG. 7 is a block diagram of a vehicle according to one embodiment of the invention;
FIG. 8 is a flow chart of a vehicle headlamp control method according to an embodiment of the present invention;
fig. 9 is a flowchart of a vehicle headlamp control method according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A vehicle headlamp control system according to an embodiment of the first aspect of the invention is described below with reference to the drawings.
Fig. 2 is a block diagram of a vehicle headlamp control system according to an embodiment of the present invention, and as shown in fig. 2, the vehicle headlamp control system 100 of the embodiment of the present invention includes a first pickup device 10, a second pickup device 20, and a control device 30.
In an embodiment of the present invention, the first collecting device 10 is used for collecting ambient noise in front of the vehicle; the second collecting device 20 is used for collecting the environmental noise behind the vehicle; control device 30 recognizes whether or not an engine voiceprint is present in the ambient noise in front of the vehicle and the ambient noise in the rear of the vehicle, and when the engine voiceprint is present in the ambient noise, extracts first sound intensity information of the engine from the ambient noise in front of the vehicle, extracts second sound intensity information of the engine from the ambient noise in the rear of the vehicle, and outputs a headlamp control signal according to the first sound intensity information and the second sound intensity information to control a headlamp of the vehicle.
Specifically, the first collecting device 10 and the second collecting device 20 may include, for example, a microphone or other sound sensor to collect noise information around the vehicle and send the collected noise information to the control device 30, and the collecting devices of the present application adopt a non-optical structure, and are not interfered by non-vehicle light or light, and are not affected by bad weather. The control device 30 processes the noise information, for example, discretizes the noise information, and obtains a discrete sound signal similar to that shown in fig. 3. The control device 30 prestores a database of various vehicle engine frequency spectrum characteristics, performs voiceprint recognition on the collected noise information based on the database, recognizes whether an engine voiceprint exists in the noise information in front of the vehicle and the noise information in the rear of the vehicle, and considers that the collected voice comes from the vehicle but not from other objects if the engine voiceprint exists, so as to achieve the purpose of recognizing the vehicle. When the engine voiceprint exists in the environmental noise, the coming vehicle is considered to be possible to come in front of or behind the vehicle, and the coming vehicle can be understood as a vehicle meeting with the vehicle or a vehicle about to overtake behind the vehicle. First sound intensity information of an engine is extracted from ambient noise in front of a vehicle, and second sound intensity information of the engine, namely sound intensity information of an engine audio, is extracted from ambient noise in back of the vehicle. It is understood that the first sound intensity information and the second sound intensity information may be changed when there is an incoming vehicle in front of the vehicle or an incoming vehicle behind the vehicle, and the sound intensity information of the engine may be changed differently for different directions, while the noise generated by the engine of the vehicle itself should be unchanged. Therefore, whether a vehicle comes or not and whether a vehicle comes from the front or a vehicle comes from the rear can be judged through the analysis of the first sound intensity information and the second sound intensity. When the vehicle is driven in different directions, the headlamps, namely the high beam lamps and the low beam lamps, have different lighting rules and can output different headlamp control signals, and then the control device 30 can send the headlamp control signals to the vehicle body controller of the vehicle, and the vehicle body controller can control the headlamps of the vehicle according to the headlamp control signals so as to realize headlamp control in different driving states.
According to the vehicle headlamp control system 100 of the embodiment of the invention, the first acquisition device 10 and the second acquisition device 20 are adopted to acquire noise signals, the engine voiceprint recognition is carried out according to the noise signals, the coming vehicle condition is judged through the sound intensity information when the vehicle is judged to be present, the automatic control of the headlamp is realized according to different coming vehicle conditions, the human intervention is not needed, and the information is acquired by a non-optical system, so that the interference of other light rays or severe weather is avoided, and the vehicle headlamp control system is more sensitive.
In some embodiments, the control device 30 is specifically configured to determine whether there is an incoming vehicle ahead or behind the vehicle based on the first sound intensity information and the second sound intensity information when outputting the headlamp control signal based on the first sound intensity information and the second sound intensity information, and calculate a first sound intensity variation based on the first sound intensity information, calculate a second sound intensity variation based on the second sound intensity information, determine an incoming vehicle direction based on the first sound intensity variation and the second sound intensity variation, and output the headlamp control signal based on the incoming vehicle direction when determining that there is an incoming vehicle ahead or behind the vehicle.
Specifically, when there is an incoming vehicle in front of or behind the vehicle, the closer the incoming vehicle is to the vehicle, the greater the sound intensity of the engine is detected, and thus it is possible to determine whether there is an incoming vehicle according to the change in sound intensity.
Further, due to the doppler effect, when a vehicle is meeting or passing or when a vehicle is approaching or moving away, the voice signals of the engine detected by the first detection device 10 and the second detection device 20 are different from each other in the vehicle, and the sound intensity of the engine, that is, the change in sound intensity is different from each other, so that the direction of the vehicle coming can be determined from the amount of change in sound intensity detected in the front and rear directions. In some embodiments, first sound intensity information and second sound intensity information are obtained, and a first sound intensity variation over a preset time is calculated, for example, as Δ engine sound intensity (front), and a second sound intensity variation over a preset time is calculated, for example, as Δ engine sound intensity (back). Control device 30 is specifically configured to determine that there is a vehicle coming ahead of the vehicle, that is, that there is a vehicle coming in front to meet the vehicle, when the first sound intensity variation is larger than the second sound intensity variation, that is, when Δ engine sound intensity (front part) > Δ engine sound intensity (rear part), when the first sound intensity variation is larger than the second sound intensity variation, or determine that there is a vehicle coming behind the vehicle, that is, that there is a vehicle coming behind the vehicle about to overtake or the meeting is completed, when the first sound intensity variation is smaller than or equal to the second sound intensity variation, that is, when Δ engine sound intensity (front part) is smaller than or equal to Δ engine sound intensity (rear part).
In the embodiment of the present invention, when there is an incoming vehicle ahead of the vehicle, i.e., meeting, the control device 30 outputs the control signals that the low beam light of the vehicle illuminates and the high beam light of the vehicle turns off, for example, outputs the low beam control signal as true and the high beam control signal as false, and requests the body controller to turn off the high beam light and turn on the low beam light through a hard wire or the vehicle CAN, thereby realizing automatic dimming of the high beam light and the low beam light when the vehicle meets. Or after the meeting of the vehicles is finished, the control signals that the dipped headlights of the vehicles are turned off and the high beam lights of the vehicles are illuminated are output, and the high beam lights are output by controlling the vehicle body controller through a hard wire or a CAN of the vehicles, so that the automatic dimming after the meeting is finished is realized; or when the vehicle comes behind, the control signal of the headlamp of the vehicle which is currently output is maintained, so that the vehicle can continue to move ahead safely when the vehicle at the rear overtakes.
In view of the fact that in some regions, a right-hand road mechanism is adopted, and an oncoming meeting or a passing vehicle is on the left side of the vehicle, in the embodiment of the present invention, in order to ensure the sampling sensitivity, the first acquisition device 10 and the second acquisition device 20 are both located on the left side of the vehicle, wherein, as shown in fig. 4, the first acquisition device 10 is installed on the left front portion of the vehicle, for example, near the position of a left headlamp; the second pickup unit 20 is mounted on the left rear portion of the vehicle, for example, near the left rear lamp. Of course, the area adopting the left-driving mechanism of the road is located at the same position on the right side of the vehicle, so that the sampling sensitivity is ensured.
The vehicle headlamp control system 100 according to the embodiment of the present invention can automatically control the lighting light of a single vehicle during meeting or passing through the above processes, and similarly, if the information processing speed of the control device 30 is fast enough, the automatic control of the far and near light of multiple vehicles meeting in a complex environment can be realized by adopting a sound intensity superposition mode according to the above processes.
In some embodiments, as shown in fig. 5, the vehicle headlamp control system 100 further includes a switch device 40, and the switch device 40 is configured to receive a user trigger command and start the vehicle headlamp control system to operate, that is, the system activation effect can be achieved by operating the switch device 40.
Specifically, as shown in fig. 6, after the switch device 40 is turned on, a user trigger command of a high beam control signal and a low beam control signal or CAN signal is sent to the control device 30, the first collecting device 10 and the second collecting device 20 are activated to enter an operating state to collect the ambient noise in front of the vehicle and the ambient noise in back of the vehicle and transmit the collected signals to the control device 30, and the control device 30 controls the vehicle body controller to output a high beam after receiving the user trigger command and sends the high beam control signal or the low beam control signal to the vehicle body controller according to the determined coming direction through the vehicle CAN or hard wire to automatically control the high beam and the low beam so as to realize automatic control in the meeting situation.
In some embodiments, as shown in fig. 5, the vehicle headlamp control system further includes a vehicle networking device 50, such as an in-vehicle T-BOX, for sending a high beam off alert signal to an oncoming vehicle ahead of the vehicle upon receiving a user input command. Specifically, based on the car networking technology, the vehicle interconnects, and when meeting, if this vehicle driver finds that the vehicle of meeting does not in time close the high beam, for the sake of safety, can send the warning signal through car networking device 50 in order to carry out the good will warning, the security when improving the meeting.
In summary, the vehicle headlamp control system 100 according to the embodiment of the present invention only needs the first collecting device 10 and the second collecting device 20, such as two audio sensors or microphones, and does not involve a complicated external circuit, and further, adopts a non-optical sensor, is not interfered by non-vehicle lights and light, is more attractive, is not affected by severe weather, can be applied to the occasions of rain fog, dust, or severe haze, and has a wide application range.
Based on the vehicle headlamp control system of the above embodiment, a vehicle according to an embodiment of a second aspect of the present invention will be explained.
Fig. 7 is a block diagram of a vehicle according to an embodiment of the present invention, and as shown in fig. 7, a vehicle 1000 according to an embodiment of the present invention includes headlamps 200, such as high beam and low beam, a vehicle body controller 300, and the vehicle headlamp control system 100 according to the above embodiment of the first aspect, wherein the structure and operation of the vehicle headlamp control system 100 are described with reference to the embodiment of the first aspect, and the vehicle body controller 300 controls the headlamps 200 according to headlamp control signals output by the vehicle headlamp control system 200, so as to realize automatic control of light change during vehicle meeting.
According to the vehicle 1000 of the embodiment of the present invention, by using the vehicle headlamp control system 100 of the embodiment of the first aspect, the automatic control of the headlamp 200 can be realized according to different incoming vehicle conditions, the sensitivity is high, and the influence of weather conditions is avoided.
A vehicle headlamp control method according to an embodiment of a third aspect of the invention is described below with reference to the drawings.
Fig. 8 is a flowchart of a vehicle headlamp control method according to an embodiment of the present invention, which includes, as shown in fig. 8:
and S1, collecting the ambient noise in front of the vehicle and collecting the ambient noise in the rear of the vehicle.
In particular, ambient noise can be picked up by an audio sensor, and typically the audio sensor belongs to a non-optical sensor, such as a microphone or other sensor that can pick up speech.
In some embodiments, based on consideration of the traveling path at the time of a meeting or passing, in order to secure the sampling sensitivity, the position of the acquisition device may be appropriately set, for example, for the region of the right-hand train, the ambient noise in front of the vehicle is acquired by the first acquisition device installed at the left front portion of the vehicle; the second collection device installed at the left rear portion of the vehicle collects the ambient noise at the rear of the vehicle. Of course, for a left-hand trip mechanism area, the acquisition device may be mounted at the same location on the right side of the vehicle.
S2, it is identified whether or not there is an engine voiceprint in the ambient noise in front of the vehicle and the ambient noise in the rear of the vehicle.
Specifically, a database of various vehicle engine frequency spectrum characteristics may be prestored, and voiceprint recognition may be performed on the collected noise information based on the database to recognize whether an engine voiceprint exists in the noise information in front of the vehicle and the noise information in back of the vehicle, and if an engine voiceprint exists, it is considered that the collected speech is from the vehicle, but not other things, so as to achieve the purpose of recognizing the vehicle.
S3, when there is an engine voiceprint in the ambient noise, extracting first sound intensity information of the engine from the ambient noise in front of the vehicle, and extracting second sound intensity information of the engine from the ambient noise in back of the vehicle.
And S4, outputting a headlamp control signal according to the first sound intensity information and the second sound intensity information to control the headlamp of the vehicle.
Specifically, when there is an incoming vehicle in front of the vehicle or an incoming vehicle behind the vehicle, the first sound intensity information and the second sound intensity information may change, and the sound intensity information of the engine may change differently when there is an incoming vehicle in different directions, but the noise generated by the engine of the vehicle itself should not change. Therefore, whether a vehicle comes or not and whether a vehicle comes from the front or a vehicle comes from the rear can be judged through the analysis of the first sound intensity information and the second sound intensity. When vehicles are driven in different directions, the headlamps, namely the high beam lamps and the low beam lamps, have different lighting rules and can output different headlamp control signals, and then the headlamp control signals can be sent to a vehicle body controller of the vehicle, and the vehicle body controller can control the headlamps of the vehicle according to the headlamp control signals so as to realize headlamp control in different driving states.
According to the vehicle headlamp control method provided by the embodiment of the invention, the noise signal is collected, the engine voiceprint recognition is carried out according to the noise signal, the coming vehicle condition is judged through the sound intensity information when the vehicle is judged to be present, the automatic control of the headlamp is realized according to different coming vehicle conditions without human intervention, and the noise collection adopts a non-optical system, so that the interference of other light rays or severe weather is avoided, and the vehicle headlamp control method is more sensitive.
In the embodiment of the present invention, when the headlamp control signal is output based on the first sound intensity information and the second sound intensity information, first, it is determined whether there is an incoming vehicle ahead or behind the vehicle based on the first sound intensity information and the second sound intensity information. Specifically, when there is an incoming vehicle in front of or behind the vehicle, the closer the incoming vehicle is to the vehicle, the greater the sound intensity of the engine is detected, and thus it is possible to determine whether there is an incoming vehicle according to the change in sound intensity.
Further, when it is determined that there is an incoming vehicle in front of or behind the vehicle, the first sound intensity variation amount is calculated according to the first sound intensity information, the second sound intensity variation amount is calculated according to the second sound intensity information, and the incoming vehicle direction is determined according to the first sound intensity variation amount and the second sound intensity variation amount. Specifically, due to the doppler effect, when a vehicle is meeting or passing or when the vehicle is approaching or moving away, the audio signal of the engine detected in front of and behind the vehicle is different, and the sound intensity of the engine, i.e., the change in sound intensity is different, so that the direction of the vehicle coming can be determined from the amount of change in sound intensity detected in front of and behind the vehicle. In some embodiments, first sound intensity information and second sound intensity information are obtained, and a first sound intensity variation over a preset time is calculated, for example, as Δ engine sound intensity (front), and a second sound intensity variation over a preset time is calculated, for example, as Δ engine sound intensity (back). When the first sound intensity variation is larger than the second sound intensity variation, namely when delta engine sound intensity (front part) > delta engine sound intensity (rear part), judging that a vehicle comes in front of the vehicle, namely the vehicle comes in front of the vehicle and the vehicle is to meet the vehicle, or when the first sound intensity variation is smaller than or equal to the second sound intensity variation, namely when the delta engine sound intensity (front part) is smaller than or equal to the delta engine sound intensity (rear part), judging that the vehicle comes behind the vehicle, namely the vehicle behind the vehicle is about to overtake or the meeting is ended.
Further, a headlamp control signal is output according to the direction of the incoming vehicle. For example, when there is a vehicle coming to meet in front of the vehicle, a control signal that the low beam light of the vehicle is illuminated and the high beam light of the vehicle is turned off is output, specifically, for example, the low beam control signal is true and the high beam control signal is false, and the vehicle body controller is requested to turn off the high beam light and turn on the low beam light through a hard wire or a vehicle CAN, thereby realizing automatic dimming of the high beam light and the low beam light when the vehicle meets. Or after the meeting of the vehicles is finished, the control signals that the dipped headlights of the vehicles are turned off and the high beam lights of the vehicles are illuminated are output, and the high beam lights are output by controlling the vehicle body controller through a hard wire or a CAN of the vehicles, so that the automatic dimming after the meeting is finished is realized; or when the vehicle comes behind, the control signal of the headlamp of the vehicle which is currently output is maintained, namely, the safe driving is continued.
Based on the above description of the vehicle headlamp control method, referring to fig. 9, a flowchart of a vehicle headlamp control method according to an embodiment of the present invention is shown, which specifically includes:
s801, judging whether the switch device is activated, if so, entering the step S802, otherwise, continuing the step.
And S802, controlling the high beam to be turned on, and acquiring ambient noise at the front and the rear of the vehicle by an acquisition device.
The above two steps realize the activation of the system.
And S803, discretizing the environmental noise, judging whether the engine voiceprint exists, if so, entering the step S804, otherwise, continuing the step.
S804, engine sound intensity information, namely first sound intensity information and second sound intensity information, is extracted.
The vehicle identification is realized through the two steps.
And S805, judging whether the sound intensity signals of the engine collected at the front and the rear are synchronously increased, if so, entering the step S806, otherwise, continuing the step.
The above step S805 realizes the determination of whether there is an incoming vehicle.
S806 determines whether Δ engine sound intensity (front) > Δ engine sound intensity (rear) is satisfied, and if so, proceeds to step S807, otherwise, proceeds to step S809.
And S807, determining that the coming vehicle in front of the vehicle is about to meet.
S808, outputting the low beam control signal true and the high beam control signal false, so as to switch the high beam to the low beam when meeting, and returning to step S806.
And S809, determining that the meeting in front is finished or the coming vehicle is about to overtake.
And S810, outputting a high beam control signal, thereby realizing high beam recovery after meeting or high beam illumination control during overtaking. And enters the next logic loop to return to step S805.
In some embodiments, vehicles are interconnected based on the car networking technology, when a vehicle meets, if a driver of the vehicle finds that an oncoming vehicle does not turn off a high beam in time, for the sake of safety, a reminding signal can be sent through the car networking device, and when a user input instruction is received, a reminding signal for turning off the high beam is sent to a vehicle coming in front of the vehicle, so that the safety is improved.
In summary, the vehicle headlamp control method of the embodiment of the invention is low in influence of environmental weather, high in sensitivity and applicable to a plurality of occasions by collecting noise and adopting the optical sensor, can realize automatic control of headlamp dimming when meeting or overtaking and meeting is finished, and does not need human intervention.
Based on the vehicle headlamp control method of the above third aspect embodiment, a non-transitory computer-readable storage medium of the fourth aspect embodiment of the present invention, on which a computer program is stored, which, when executed by a processor, can implement the vehicle headlamp control method of the above third aspect embodiment.
According to the non-transitory computer-readable storage medium of the embodiment of the present invention, a basis is provided for the implementation of the control method for the vehicle headlamp by storing a computer program that can implement the control method for the vehicle headlamp of the above third aspect embodiment.
It should be noted that in the description of this specification, any process or method description in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and that the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (16)
1. A vehicle headlamp control system, characterized by comprising:
the first acquisition device is used for acquiring the environmental noise in front of the vehicle;
the second acquisition device is used for acquiring the environmental noise behind the vehicle;
a control device for recognizing whether an engine voiceprint is present in ambient noise in front of the vehicle and ambient noise in back of the vehicle, and extracting first sound intensity information of the engine from the ambient noise in front of the vehicle and second sound intensity information of the engine from the ambient noise in back of the vehicle when the engine voiceprint is present in the ambient noise, and outputting a headlamp control signal according to the first sound intensity information and the second sound intensity information to control a headlamp of the vehicle, the control device being specifically configured to determine whether a vehicle is coming in front of or behind the vehicle according to the first sound intensity information and the second sound intensity information when the headlamp control signal is output according to the first sound intensity information and the second sound intensity information, and determine that a vehicle is coming in front of or behind the vehicle when the vehicle is determined, and calculating a first sound intensity variation according to the first sound intensity information, calculating a second sound intensity variation according to the second sound intensity information, judging the incoming direction according to the first sound intensity variation and the second sound intensity variation, and outputting the headlamp control signal according to the incoming direction.
2. The vehicle headlamp control system according to claim 1, wherein the control device is specifically configured to determine whether there is an incoming vehicle ahead or behind the vehicle when determining whether there is an incoming vehicle ahead or behind the vehicle based on the first sound intensity information and the second sound intensity information, and determine that there is an incoming vehicle ahead or behind the vehicle when determining that the sound intensity signals are increasing synchronously based on the first sound intensity information and the second sound intensity information.
3. The vehicle headlamp control system according to claim 2, wherein the control device is specifically configured to, when determining the direction of an incoming vehicle from the first sound intensity variation and the second sound intensity variation, determine that there is an incoming vehicle ahead of the vehicle when the first sound intensity variation is larger than the second sound intensity variation, or determine that there is an incoming vehicle behind the vehicle or a meeting is ended when the first sound intensity variation is smaller than or equal to the second sound intensity variation.
4. The vehicle headlamp control system according to claim 3, wherein the control device outputs the headlamp control signal according to the incoming direction, specifically, outputs a control signal for turning off a low beam of the vehicle and turning off a high beam of the vehicle when there is an incoming vehicle ahead of the vehicle, or outputs a control signal for turning off a low beam of the vehicle and turning off a high beam of the vehicle after the vehicle-meeting ends; or, when there is an incoming call behind the vehicle, the currently output control signal for the headlamps of the vehicle is maintained.
5. The vehicle headlamp control system of claim 1, wherein the first pickup device is mounted at a front left portion of the vehicle and the second pickup device is mounted at a rear left portion of the vehicle.
6. The vehicle headlamp control system as claimed in claim 3, further comprising a vehicle networking device for sending a high beam off alert signal to an oncoming vehicle ahead of the vehicle upon receiving a user input command.
7. The vehicle headlamp control system as defined in any one of claims 1-6, further comprising a switch device for receiving a user activation command and activating the vehicle headlamp control system.
8. A vehicle, characterized in that the vehicle comprises a headlamp, a body controller and a vehicle headlamp control system as claimed in any one of claims 1 to 7.
9. A vehicle headlamp control method, characterized by comprising:
collecting ambient noise in front of a vehicle and collecting ambient noise behind the vehicle;
identifying whether an engine voiceprint is present in ambient noise in front of the vehicle and ambient noise behind the vehicle;
when the engine voiceprint exists in the environmental noise, extracting first sound intensity information of the engine from the environmental noise in front of the vehicle, and extracting second sound intensity information of the engine from the environmental noise in back of the vehicle;
and outputting a headlamp control signal according to the first sound intensity information and the second sound intensity information so as to control a headlamp of the vehicle.
10. The vehicle headlamp control method according to claim 9, wherein outputting a headlamp control signal according to the first sound intensity information and the second sound intensity information specifically includes:
judging whether an incoming vehicle exists in front of or behind the vehicle according to the first sound intensity information and the second sound intensity information;
when an incoming call is judged to be in front of or behind the vehicle, calculating a first sound intensity variation according to the first sound intensity information, calculating a second sound intensity variation according to the second sound intensity information, and judging an incoming direction according to the first sound intensity variation and the second sound intensity variation;
and outputting the headlamp control signal according to the incoming vehicle direction.
11. The vehicle headlamp control method according to claim 10, wherein the determining whether there is an incoming vehicle ahead or behind the vehicle according to the first sound intensity information and the second sound intensity information specifically includes:
and judging that the vehicle comes in front of or behind the vehicle when judging that the sound intensity signal is synchronously amplified according to the first sound intensity information and the second sound intensity information.
12. The vehicle headlamp control method according to claim 11, wherein the determining the incoming direction based on the first sound intensity variation and the second sound intensity variation specifically includes:
judging that an incoming vehicle is in front of the vehicle when the first sound intensity variation is larger than the second sound intensity variation;
or judging that the vehicle comes or the vehicle meeting is finished behind the vehicle when the first sound intensity variation is smaller than or equal to the second sound intensity variation.
13. The vehicle headlamp control method according to claim 12, wherein the outputting the headlamp control signal according to the incoming direction specifically includes:
when a vehicle comes in front of the vehicle, outputting a control signal that a low beam light of the vehicle illuminates and a high beam light of the vehicle is turned off;
or after the meeting of the vehicles is finished, outputting a control signal that a low beam light of the vehicles is turned off and a high beam light of the vehicles illuminates;
or, when there is an incoming call behind the vehicle, the currently output control signal for the headlamps of the vehicle is maintained.
14. The vehicle headlamp control method according to claim 9, wherein the capturing of the ambient noise in front of the vehicle and the capturing of the ambient noise behind the vehicle specifically include:
collecting ambient noise in front of the vehicle by a first collecting device mounted at the front left part of the vehicle;
and collecting the ambient noise behind the vehicle by a second collecting device arranged at the left rear part of the vehicle.
15. The vehicle headlamp control method according to claim 12, characterized by further comprising: and when receiving a user input instruction, sending a high beam turn-off reminding signal to the vehicle ahead through the Internet of vehicles.
16. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the vehicle headlamp control method as claimed in any one of claims 9 to 15.
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| CN107031494A (en) * | 2017-04-21 | 2017-08-11 | 晋江弘钧电子科技有限公司 | Vehicle front lighting lamp control method based on voice recognition |
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| CN103770736A (en) * | 2014-01-29 | 2014-05-07 | 大连理工大学 | Vehicle surrounding warning system based on sound field detection |
| GB2548946A (en) * | 2016-03-31 | 2017-10-04 | Fed Signal Vama Sa | Priority light bar device |
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Application publication date: 20190315 Assignee: Beijing Zhike chelian Technology Co.,Ltd. Assignor: BEIQI FOTON MOTOR Co.,Ltd. Contract record no.: X2022980018253 Denomination of invention: Vehicle headlamp control system and method and vehicle and storage medium Granted publication date: 20210618 License type: Common License Record date: 20221013 |