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CN-122009011-A - Method and system for turning off high beam after night driving reminding

CN122009011ACN 122009011 ACN122009011 ACN 122009011ACN-122009011-A

Abstract

The invention discloses a method and a system for turning off a high beam after reminding a driver of driving at night, and belongs to the technical field of vehicle safety. The method comprises the steps of obtaining environment state information of a vehicle in real time, including a time state and a rear light state, judging whether a first preset condition, a second preset condition and a third preset condition are met at the same time based on the environment state information, controlling a display device arranged at the rear part of the vehicle to display preset prompt information for reminding of turning off a high beam when the first preset condition, the second preset condition and the third preset condition are met at the same time, and controlling the display device to stop displaying the prompt information when a preset termination condition is met. According to the invention, through a multi-condition collaborative verification mechanism, the accurate triggering and automatic starting and stopping of a reminding function are realized, the interference of false triggering on a rear vehicle is effectively avoided, the driving safety and the user experience are improved, and meanwhile, the communication efficiency with a driver of the rear vehicle is improved through standardized text prompt information.

Inventors

  • LIU BIN
  • WANG NANJIE
  • CAO HANWEN
  • WANG QING
  • HU SAI

Assignees

  • 东风汽车集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260205

Claims (10)

  1. 1. The method for reminding the rear vehicle of turning off the high beam at night is characterized by comprising the following steps of: acquiring environment state information of a vehicle in real time, wherein the environment state information comprises a time state and a rear light state; Judging whether a first preset condition, a second preset condition and a third preset condition are met at the same time based on the environmental state information, wherein the first preset condition is that the vehicle is in a night driving period, the second preset condition is that a strong light source with the duration exceeding the first preset duration and the illuminance value exceeding a first brightness threshold is detected to exist at the rear, and the third preset condition is that a trigger instruction from a driver is received; When the judgment result is that the first preset condition, the second preset condition and the third preset condition are met at the same time, controlling a display device arranged at the rear part of the vehicle to display prompt information for reminding the turning-off of the high beam; and when the preset termination condition is met, controlling the display device to stop displaying the prompt information.
  2. 2. The method of claim 1, wherein the acquiring, in real time, the environmental status information of the vehicle comprises: Acquiring current time information through a clock module arranged in the vehicle or communication with an external time server, and determining the night driving time period based on sunrise time and sunset time of the current position of the vehicle; The method comprises the steps that through a photosensitive sensor arranged at the rear part of a vehicle and facing the rear environment of the vehicle, illumination intensity data of the rear environment are collected in real time, and the illumination intensity data with the duration exceeding a preset continuous judging threshold value and the illumination intensity value exceeding a first brightness threshold value are judged to be continuous strong light sources at the rear; And accessing weather information service through a vehicle network connection module, acquiring sunrise time and sunset time based on the current position of the vehicle, and defining a first preset time length after the sunset time to a second preset time length before the sunrise time as the night driving time period.
  3. 3. The method according to claim 2, wherein accessing the weather information service through the vehicle networking module, obtaining the sunrise time and the sunset time based on the current position of the vehicle further comprises a network anomaly handling mechanism, specifically comprising: The network connection state with the weather information service is monitored in real time through the vehicle network connection module, and when network connection failure is detected or the response timeout of the server exceeds a preset time threshold value, the real-time sunrise and sunset time cannot be acquired; when the real-time sunrise and sunset time cannot be acquired, invoking sunrise and sunset time data which are successfully acquired and stored for the last time from a storage unit of a vehicle control unit, wherein the storage unit adopts a nonvolatile memory to ensure that the data can be still reserved after the vehicle is flameout; Acquiring current position information of the vehicle in real time through a GPS positioning module, and judging that the vehicle is in a cross-domain running state when the position moving distance of the vehicle from the last time of successfully acquiring sunrise and sunset exceeds a preset cross-domain distance threshold value; when the vehicle is judged to be in a cross-domain running state, based on longitude and latitude information of the current position of the vehicle, dynamically correcting the stored sunrise and sunset time data by combining an earth rotation rule and a time zone dividing rule to generate sunrise and sunset time suitable for the current position of the vehicle; And applying the corrected sunrise and sunset time data to the definition of the night driving time period, continuously monitoring the network connection state, and re-acquiring the real-time sunrise and sunset time data and updating and storing when the network is recovered.
  4. 4. The method of claim 2, wherein the real-time acquisition of ambient illuminance data by a photosensor disposed at the rear of the vehicle further comprises a signal filtering processing mechanism, specifically comprising: The photosensitive sensor is internally provided with a signal filtering unit, and the signal filtering unit comprises a hardware filtering circuit and a software filtering algorithm and is used for filtering the acquired original illuminance signal; the signal filtering unit is used for carrying out frequency analysis on the original illuminance signal, and identifying and filtering alternating current lamplight interference signals with the frequency being in a preset alternating current frequency range; performing time domain analysis on the original illuminance signal through the signal filtering unit, and identifying an instantaneous strong light signal with duration shorter than a preset instantaneous signal threshold; Filtering the identified instantaneous strong light signals from the original illuminance signals to generate filtered illuminance data; and judging that the continuous strong light source exists behind the illuminance data with the duration exceeding a preset continuous judging threshold value and the illuminance value exceeding the first brightness threshold value.
  5. 5. The method of claim 1, wherein verifying whether the first preset condition, the second preset condition, and the third preset condition are satisfied at the same time comprises: the vehicle control unit judges whether the first preset condition and the second preset condition are met at the same time or not, and activates a trigger interface for receiving the third preset condition if and only if both the first preset condition and the second preset condition are met; the trigger interface supports at least one of the following trigger instruction input modes: receiving pressing operation through a special physical key arranged on a steering wheel, and generating a trigger instruction; receiving touch operation through a virtual control displayed on a vehicle central control display screen, and generating a trigger instruction; receiving a preset voice command through a vehicle-mounted voice recognition system, and generating a trigger command; When a trigger instruction is received through the trigger interface, verifying whether the third preset condition is met, if so, judging that the first preset condition, the second preset condition and the third preset condition are met at the same time; And when the first preset condition or the second preset condition is not met any more, closing the trigger interface, and stopping receiving the trigger instruction.
  6. 6. The method according to claim 5, wherein the generating the trigger command comprises receiving a pressing operation through a dedicated physical key provided on the steering wheel: The special physical key is arranged in the left side area of the steering wheel, keeps a preset distance range with the light control deflector rod, and supports two trigger modes of short-press operation and long-press operation; when the pressing operation duration time of the special physical key is detected to be smaller than a first preset time threshold value, generating the trigger instruction and sending the trigger instruction to a vehicle control unit; When the duration of the pressing operation of the special physical key is detected to be more than or equal to the first preset time threshold, controlling a vehicle control unit (ECU) to switch the currently selected prompt language text and generate a prompt language switching confirmation signal; The vehicle-mounted voice recognition system supports voice recognition of a plurality of dialects, including but not limited to at least one dialect of Mandarin, guangdong, minnan, wu, hakka; When receiving voice input, performing feature extraction and pattern matching on the voice signal through an acoustic model and a language model, identifying a corresponding voice instruction, and generating the trigger instruction.
  7. 7. The method according to claim 1, wherein controlling a display device provided at a rear portion of the vehicle to display a preset warning message for warning of turning off the high beam specifically comprises: Calling the current selected prompt language text from a prompt language database stored in a vehicle control unit, and generating prompt information for prompting to turn off the high beam; dynamically adjusting display parameters of the display device according to the current ambient light intensity, including display brightness, font color and scrolling speed; Controlling a flexible OLED transparent display film arranged at the rear part of the vehicle to display the prompt information in a preset font color and a preset rolling speed, wherein the light transmittance of the flexible OLED transparent display film is not lower than a preset light transmittance threshold; And continuously monitoring the change of the rear light state, and generating a prompt signal that the rear vehicle possibly turns off the high beam when the illuminance value of the rear light state is monitored to be lower than a preset second brightness threshold value and the distance of the rear vehicle is continuously increased. And displaying the confirmation signal on a vehicle instrument panel to prompt a driver that the rear vehicle has turned off the high beam.
  8. 8. The method of claim 7, wherein invoking the currently selected reminder language text from a reminder database stored in the vehicle control unit comprises: the prompt language database stores a plurality of groups of prompt language text files applicable to different driving scenes, and each group of prompt language text files corresponds to different driving scene types, including but not limited to at least one of urban road scenes, expressway scenes, night driving scenes and rain, fog and weather scenes; Acquiring vehicle running state information and external environment information in real time through a vehicle control unit, and identifying the current running scene type; According to the recognized current driving scene type, automatically matching a corresponding prompt language text from the prompt language database to serve as a current selected prompt language text; when a prompt switching instruction from a driver is received, manually switching to the next group of prompt language text from the prompt database, and updating the currently selected prompt language text; The step of displaying the prompt information with the preset font color and the preset rolling speed further comprises the step of adjusting the rolling speed between a preset minimum rolling speed threshold value and a preset maximum rolling speed threshold value so as to adapt to the reading habits and driving safety requirements of different drivers.
  9. 9. The method of claim 1, wherein the predetermined termination condition comprises at least one of: a manual termination condition for receiving a closing instruction from a driver through a vehicle control unit (ECU) and controlling the display device to stop displaying the prompt information; The time condition is terminated, namely the current time is acquired through a clock module arranged in the vehicle, and when the current time reaches or exceeds sunrise time, the display device is controlled to stop displaying the prompt information; The light condition is terminated, namely the illuminance value of the rear light state is continuously monitored through a photosensitive sensor arranged at the rear part of the vehicle, and when the illuminance value is monitored to be lower than a second brightness threshold value and the duration exceeds a second preset duration, the display device is controlled to stop displaying the prompt information; Detecting vehicle state information through a vehicle control unit (ECU), and controlling the display device to stop displaying the prompt information when the vehicle flameout or the gear shift of the gearbox to a parking gear (P gear) is detected; And stopping the distance condition, namely acquiring the distance data of the rear vehicle and the own vehicle in real time through a vehicle-mounted radar arranged at the rear part of the vehicle, and controlling the display device to stop displaying the prompt information when the distance exceeds the safety influence distance threshold value.
  10. 10. A system for turning off a high beam after reminding a driver of driving at night, comprising: The environment state sensing module is used for acquiring environment state information of the vehicle in real time, wherein the environment state information comprises a time state and a rear light state; The condition verification and control module is used for judging whether a first preset condition, a second preset condition and a third preset condition are met at the same time based on the environmental state information, wherein the first preset condition is that the vehicle is in a night driving period, the second preset condition is that a strong light source with the rear duration exceeding the first preset duration and the illuminance value exceeding a first brightness threshold is detected, and the third preset condition is that a trigger instruction from a driver is received; The man-machine interaction triggering module is used for receiving a triggering instruction or a closing instruction from a driver and sending the triggering instruction or the closing instruction to the condition verification and control module; The rear vehicle information display module is used for displaying prompt information for reminding the turn-off of the high beam according to the display control instruction or stopping displaying the prompt information according to the stop display instruction; the environment state sensing module, the man-machine interaction triggering module and the rear car information display module are all in communication connection with the condition verification and control module.

Description

Method and system for turning off high beam after night driving reminding Technical Field The invention relates to the technical field of vehicle safety, in particular to a method and a system for turning off a high beam after reminding a driver of driving at night. Background In the night driving process, the rear vehicle starts the far-reaching headlamp and can cause serious light to the front vehicle driver to interfere, influences driving sight, increases driving potential safety hazard, and at present, the driver reminds the rear vehicle to close the far-reaching headlamp through modes such as flashing rear fog lamp, brake lamp or whistle, but these modes have the following problems: the signal is fuzzy and is easy to misunderstand, namely, the meaning of a flashing light or a whistling is not clear, a driver of a rear vehicle may not accurately understand the intention of the front vehicle, and even may misunderstand the intention as an aggressive behavior, so that communication is failed. The operation is complex, the driver needs to find and operate the corresponding light or horn buttons, and under the condition of poor driving sight at night, the operations can disperse the driver's attention to the road conditions in front, and the safety risk is increased. The false triggering rate is high, the existing automatic reminding system is usually triggered only based on a single condition (such as rear light intensity), false triggering is easy to occur due to factors such as environmental light change, instantaneous strong light interference and the like, a rear car is reminded without any accident, and the driving experience of the rear car is affected. The automatic closing mechanism is lacking, namely, after the reminding function is started, the reminding function needs to be closed manually, and if the driver forgets to close, prompt information can be continuously displayed, so that unnecessary interference is caused. Therefore, a method and a system for accurately judging, automatically starting and stopping and prompting the vehicle to turn off the high beam after the night driving with clear signals are needed, so as to solve the technical problems. Disclosure of Invention In view of the technical defects and technical drawbacks existing in the prior art, the embodiment of the invention provides a method and a system for turning off a high beam after night driving reminding, which overcome or at least partially solve the problems, and the specific scheme is as follows; as a first aspect of the present invention, there is provided a method for turning off a high beam after a night driving reminder, comprising the steps of: acquiring environment state information of a vehicle in real time, wherein the environment state information comprises a time state and a rear light state; Judging whether a first preset condition, a second preset condition and a third preset condition are met at the same time based on the environmental state information, wherein the first preset condition is that the vehicle is in a night driving period, the second preset condition is that a strong light source with the duration exceeding the first preset duration and the illuminance value exceeding a first brightness threshold is detected to exist at the rear, and the third preset condition is that a trigger instruction from a driver is received; When the judgment result is that the first preset condition, the second preset condition and the third preset condition are met at the same time, controlling a display device arranged at the rear part of the vehicle to display prompt information for reminding the turning-off of the high beam; and when the preset termination condition is met, controlling the display device to stop displaying the prompt information. Wherein the preset termination condition comprises any one of the following: Receiving a closing instruction from a driver; Detecting that the illuminance value of the rear light state is reduced to be lower than a second brightness threshold value and the duration exceeds a second preset duration; The current time reaches the sunrise time. In some embodiments, the acquiring, in real time, the environmental status information of the vehicle includes: Acquiring current time information through a clock module arranged in the vehicle or communication with an external time server, and determining the night driving time period based on sunrise time and sunset time of the current position of the vehicle; The method comprises the steps that through a light detection device or a photosensitive sensor arranged at the rear part of a vehicle and facing to the rear environment of the vehicle, illumination intensity data of the rear environment are collected in real time, and illumination intensity data with the duration exceeding a preset duration judgment threshold value and the illumination intensity value exceeding a first brightness threshold value are judged to be continuous s