A sleep disturbance reduction system in a vehicle

Abstract

The present invention discloses a system for reducing interference in sleeping in a car, including a vehicle GPS positioning module, a sleep judgment module, an interference item judgment module and a de-interference judgment module; when the user is in a stationary state in the vehicle and resting in a safe position, the sleep judgment module judges the user state, and when it is determined that the user is in a sleeping state, the interference item judgment module judges whether the brightness inside the car and the sound outside the car constitute interference to the user, and if so, controls the vehicle to reduce interference and continues to collect interference information inside the car; after taking noise reduction measures, if the brightness and / or sound inside the car still interfere with the user's rest, the de-interference judgment module recommends a location and voice reminds the user to navigate to the location suitable for rest. The system of the present invention detects the user's sleeping environment, and actively takes avoidance operations for interference items that affect sleep, so as to provide a better sleeping environment for the user.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent automobiles, in particular to a system for reducing disturbances in sleeping in a vehicle. Background Art

[0002] With the development of the automobile industry, cars, as a third space independent of offices and homes, are widely used in various scenarios. More and more users will choose to rest in the car during long-distance drives or at noon on weekdays. When users listen to music, watch videos and other relaxing entertainment activities before going to bed, they will let the seat lean back, and users often fall asleep unconsciously while watching. At this time, it is difficult for fingers to touch the screen, and voice input will also affect sleepiness. Therefore, the central control screen is still not turned off and the sound is still not turned off after falling asleep, which affects the quality of sleep.

[0003] Currently, most nap modes in cars simply record the seat / backrest / volume level, and users need to turn on the nap mode themselves. The vehicle cannot actively monitor the surrounding environment and cannot provide users with a more comfortable sleeping environment. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an in-vehicle sleep disturbance reduction system that can provide a comfortable sleeping environment for a user.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0006] The present invention is a system for reducing interference when sleeping in a vehicle, comprising a vehicle GPS positioning module, a sleep judgment module, an interference item judgment module and an interference elimination judgment module;

[0007] The vehicle GPS positioning module is used to obtain the current speed and position of the vehicle and determine the status of the vehicle;

[0008] The sleep determination module determines the user's state through the user state information collected by the user state collection module, and collects interference information inside and outside the vehicle according to the determination result;

[0009] The interference item determination module determines whether the interference information collected inside and outside the vehicle meets the conditions for being determined as an interference item. If so, the vehicle is controlled to reduce the interference and continue to collect the interference information inside the vehicle;

[0010] The interference removal judgment module judges the collected interference information, and if it reaches the interference removal threshold after noise reduction processing, it recommends a location and reminds the user by voice to navigate to the location suitable for rest.

[0011] A further improvement of the present invention is that: the user status acquisition module includes an in-car camera device and a user bracelet;

[0012] The in-car camera device is used to collect the user's facial information and recognize the user's facial expression and eye information through an image recognition algorithm;

[0013] The user's wristband is connected to the vehicle via Bluetooth, and the user's heart rate information is collected through the user's wristband.

[0014] A further improvement of the present invention is that: the interference information includes vehicle external sound, vehicle internal sound and vehicle internal brightness;

[0015] The decibel values ​​of the vehicle's external sound and the vehicle's internal sound are collected by an external microphone device and an internal microphone device;

[0016] The vehicle interior brightness is collected by a vehicle interior light sensor.

[0017] A further improvement of the present invention is that the sleep determination module performs the following operations:

[0018] Determine whether the user has closed his eyes for more than 10 seconds. If so, 2 points will be awarded. If not, continue to obtain the user's facial information through the in-car camera.

[0019] When the user closes his eyes, determine whether the user's eyeballs have moved horizontally within 5 minutes. If so, 2 points will be scored; if not, continue to obtain the user's eye information through eye movement visual recognition;

[0020] Determine whether the heart rate is lower than 50 beats / minute. If so, score 2 points. If not, continue to identify the heart rate through the bracelet.

[0021] When the user closes his eyes, determine whether the user's expression is relaxed. If so, score 2 points; if not, continue to obtain the user's facial information;

[0022] Determine whether the total score is greater than or equal to 4 points. If so, obtain the decibel value of the vehicle's external sound through the microphone device and the brightness value inside the vehicle through the light sensor; if not, continue to recognize facial expressions, obtain user eye information, and collect user heart rate through the bracelet.

[0023] A further improvement of the present invention is that the interference item determination module performs the following operations:

[0024] Determine whether the decibel value of the vehicle's external sound is greater than 70 decibels. If so, score 1 point; if not, continue to obtain the vehicle's external sound decibel value through an external microphone device;

[0025] Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor.

[0026] Determine whether the total score is greater than or equal to 1 point. If so, raise the window, turn on the external circulation, and turn off the central control screen; if not, continue to obtain the decibel value of the vehicle's external sound and the brightness value inside the vehicle.

[0027] A further improvement of the present invention is that the interference removal judgment module performs the following operations:

[0028] The decibel value of the sound inside the vehicle is obtained through the internal microphone device, and the brightness value inside the vehicle is obtained through the light sensor;

[0029] Determine whether the decibel value of the sound inside the vehicle is greater than 40 decibels. If so, score 1 point; if not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device;

[0030] Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor.

[0031] Determine whether the total score is greater than or equal to 1 point. If not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor; if so, turn on the ANC active noise reduction function of the vehicle, and continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor, and continue to determine whether the decibel value of the sound inside the vehicle is greater than 40 decibels. If so, 1 point is calculated; if not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device;

[0032] Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor.

[0033] Determine whether the total score is greater than or equal to 1 point. If so, recommend a location and remind the user by voice to navigate to the location suitable for resting. If not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor.

[0034] The beneficial effects of the present invention are as follows: the present invention can detect the environment, take proactive evasive actions for interference items that affect sleep, and provide users with a better sleeping environment. For unavoidable noise interference, the locomotive recommends a suitable resting location to the user and provides voice navigation for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic diagram of a system for reducing sleep disturbance in a vehicle according to an embodiment of the present invention;

[0036] Figure 2 is a flowchart of a system for reducing disturbances to sleep in a vehicle according to an embodiment of the present invention;

[0037] Figure 3 is a flowchart of a sleep determination module in an embodiment of the present invention;

[0038] Figure 4 is a flowchart of the interference item judgment module in an embodiment of the present invention;

[0039] Figure 5 This is a flowchart of the interference removal judgment module in an embodiment of the present invention; DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] like Figure 1-2 As shown, a system for reducing interference in sleeping in a vehicle of the present invention comprises a vehicle GPS positioning module, a sleep judgment module, an interference item judgment module and an interference elimination judgment module;

[0042] The vehicle GPS positioning module is used to obtain the current speed and position of the vehicle and determine the state of the vehicle. If the vehicle is in a driving state, the current speed and position of the vehicle will continue to be obtained through GPS; if the vehicle is stationary, the user's facial information will be obtained through the in-vehicle camera device, and the user's face will be identified through the image recognition algorithm to determine whether the user's face is in a relaxed state and the user's eye information, and the user's heart rate information will be obtained through the user's wristband;

[0043] When the vehicle is stationary, the sleep determination module determines the user's state through the user state information collected by the user state collection module, and collects interference information in the vehicle according to the determination result;

[0044] The sleep stages of a person are divided into non-rapid eye movement sleep and rapid eye movement sleep. During the rapid eye movement sleep, people's eyeballs move horizontally most of the time, rather than up and down. Therefore, the condition for judging whether the user has entered deep sleep in the present invention is set as whether the eyeballs move horizontally.

[0045] The interference information inside and outside the vehicle includes the external sound of the vehicle, the internal sound of the vehicle and the brightness inside the vehicle;

[0046] The decibel values ​​of the vehicle's external sound and the vehicle's internal sound are collected by an external microphone device and an internal microphone device;

[0047] The vehicle interior brightness is collected by a vehicle interior light sensor.

[0048] like Figure 3 As shown, the sleep determination module performs the following operations:

[0049] Determine whether the user has closed his eyes for more than 10 seconds. If so, 2 points will be awarded. If not, continue to obtain the user's facial information through the in-car camera.

[0050] When the user closes his eyes, determine whether the user's eyeballs have moved horizontally within 5 minutes. If so, 2 points will be scored; if not, continue to obtain the user's eye information through eye movement visual recognition;

[0051] Determine whether the heart rate is lower than 50 beats / minute. If so, score 2 points. If not, continue to identify the heart rate through the bracelet.

[0052] When the user closes his eyes, determine whether the user's expression is relaxed. If so, score 2 points; if not, continue to obtain the user's facial information;

[0053] Determine whether the total score is greater than or equal to 4 points. If so, obtain the decibel value of the vehicle's external sound through the microphone and the brightness value inside the vehicle through the light sensor; if not, continue to recognize facial expressions, obtain user eye information, and collect user heart rate through the bracelet.

[0054] The interference item determination module determines whether the interference information collected inside and outside the vehicle meets the conditions for being determined as an interference item. If so, the vehicle is controlled to reduce interference and the interference information inside and outside the vehicle continues to be collected.

[0055] like Figure 4 As shown, the interference item judgment module performs the following operations:

[0056] Determine whether the decibel value of the vehicle's external sound is greater than 70 decibels. If so, score 1 point; if not, continue to obtain the vehicle's external sound decibel value through the microphone;

[0057] Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor.

[0058] Determine whether the total score is greater than or equal to 1 point. If so, raise the window, turn on the external circulation, and turn off the central control screen; if not, continue to obtain the decibel value of the vehicle's external sound and the brightness value inside the vehicle.

[0059] The interference removal judgment module judges the collected interference information, and if it reaches the interference removal threshold after noise reduction processing, it recommends a location and reminds the user by voice to navigate to the location suitable for rest.

[0060] like Figure 5 As shown, the interference removal judgment module performs the following operations:

[0061] The decibel value of the sound inside the vehicle is obtained through the microphone, and the brightness value inside the vehicle is obtained through the light sensor;

[0062] Determine whether the decibel value of the sound inside the vehicle is greater than 40 decibels. If so, score 1 point; if not, continue to obtain the decibel value of the sound inside the vehicle through the microphone;

[0063] Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor.

[0064] Determine whether the total score is greater than or equal to 1 point. If not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor; if so, turn on the ANC active noise reduction function of the vehicle, and continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor, and continue to determine whether the decibel value of the sound inside the vehicle is greater than 40 decibels. If so, 1 point is calculated; if not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device;

[0065] Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor.

[0066] Determine whether the total score is greater than or equal to 1 point. If so, recommend a location and remind the user by voice to navigate to the location suitable for resting. If not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor.

[0067] For a certain actual scenario, the interference removal process of this system is as follows:

[0068] 1. The vehicle GPS positioning module obtains the vehicle speed and location; the user confirms that the vehicle is stationary and in a safe position and enters the rest state;

[0069] 2. Through the in-car camera device, if the user closes his eyes for more than 10 seconds and his heart rate is less than 50 beats / minute, the score is equal to 4 points, and the user is judged to be in a sleeping state;

[0070] 3. The decibel level outside the vehicle obtained by the external microphone is 80, and the brightness inside the vehicle obtained by the vehicle's internal light sensor is 1 lux, which is equal to 2 points, meeting the conditions for being judged as an interference item;

[0071] 4. Raise the car window, turn on the external circulation, and turn off the central control screen;

[0072] 5. The decibel level inside the vehicle is 30 obtained through the microphone, and the brightness is 0.8 lux obtained through the sensor, which is equal to 1 point. The ANC active noise reduction function of the vehicle is turned on, and the score is still equal to 1 point;

[0073] 6. The car computer's voice reminder allows users to navigate to a nearby underground parking lot.

[0074] The ANC active noise reduction function in the present invention analyzes various noises in real time and generates anti-phase sound waves. The present invention can automatically reduce the impact of the sleep-disturbing environment on the user's sleep quality and provide a better sleeping environment for the user.

[0075] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent process changes made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A system for reducing disturbances when sleeping in a vehicle, characterized in that: It includes vehicle GPS positioning module, sleep judgment module, interference item judgment module and interference removal judgment module; The vehicle GPS positioning module is used to obtain the current speed and position of the vehicle and determine the status of the vehicle; The sleep determination module determines the user's state through the user state information collected by the user state collection module, and collects interference information inside and outside the vehicle according to the determination result; The interference item judgment module judges whether the interference information collected inside and outside the vehicle meets the conditions for being judged as an interference item. If so, the vehicle is controlled to reduce interference and continue to collect interference information inside the vehicle. The interference removal judgment module judges the collected interference information. If it reaches the interference removal threshold after noise reduction processing, it recommends a location and reminds the user by voice to navigate to a suitable location for rest. The user status acquisition module includes an in-car camera device and a user bracelet; The in-car camera device is used to collect the user's facial information and recognize the user's facial expression and eye information through an image recognition algorithm; The user's wristband is connected to the vehicle via Bluetooth, and the user's heart rate information is collected through the user's wristband; The interference information includes external vehicle sound, internal vehicle sound and vehicle interior brightness; The decibel values ​​of the vehicle's external sound and the vehicle's internal sound are collected by an external microphone device and an internal microphone device; The brightness inside the vehicle is collected by a light sensor inside the vehicle; The sleep determination module performs the following operations: Determine whether the user has closed his eyes for more than 10 seconds. If so, 2 points will be awarded. If not, continue to obtain the user's facial information through the in-car camera. When the user closes his eyes, determine whether the user's eyeballs have moved horizontally within 5 minutes. If so, 2 points will be scored; if not, continue to obtain the user's eye information through eye movement visual recognition; Determine whether the heart rate is lower than 50 beats / minute. If so, score 2 points. If not, continue to identify the heart rate through the bracelet. Determine whether the user's expression is relaxed. If so, score 2 points; if not, continue to obtain the user's facial information; Determine whether the total score is greater than or equal to 4 points. If so, obtain the decibel value of the vehicle's external sound through the external microphone device and the brightness value inside the vehicle through the light sensor; if not, continue to recognize facial expressions, obtain user eye information, and collect user heart rate through the bracelet; The interference item judgment module performs the following operations: Determine whether the decibel value of the vehicle's external sound is greater than 70 decibels. If so, score 1 point; if not, continue to obtain the vehicle's external sound decibel value through an external microphone device; Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor. Determine whether the total score is greater than or equal to 1 point. If so, raise the car window, turn on the external circulation, and turn off the central control screen; if not, continue to obtain the decibel value of the vehicle's external sound and the brightness value inside the vehicle; The interference removal judgment module performs the following operations: The decibel value of the sound inside the vehicle is obtained through the internal microphone device, and the brightness value inside the vehicle is obtained through the light sensor; Determine whether the decibel value of the sound inside the vehicle is greater than 40 decibels. If so, score 1 point; if not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device; Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor. Determine whether the total score is greater than or equal to 1 point. If not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor; if so, turn on the ANC active noise reduction function of the vehicle, and continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor, and continue to determine whether the decibel value of the sound inside the vehicle is greater than 40 decibels. If so, 1 point is calculated; if not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device; Determine whether the brightness is greater than 0.5 lux. If so, score 1 point. If not, continue to obtain the brightness value inside the vehicle through the light sensor. Determine whether the total score is greater than or equal to 1 point. If so, recommend a location and remind the user by voice to navigate to a suitable resting location. If not, continue to obtain the decibel value of the sound inside the vehicle through the internal microphone device and the brightness value inside the vehicle through the light sensor.

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