A method, system, and device for windshield wiper operation based on fatigue driving detection

Abstract

This invention discloses a windshield wiper operation method, system, and device based on driver fatigue detection, belonging to the field of windshield wiper control technology. The wiper operation method includes the following steps: when driver fatigue is detected, a warning message is issued; it is detected whether it is raining; if so, the wiper frequency is adjusted to the first setting; it is determined whether the driver fatigue has disappeared; if so, the wipers are switched to the second setting. This invention addresses driver fatigue in different scenarios by designing different reminder methods through the vibration effect of the wipers, making them easily noticeable to the driver and providing a more obvious reminder effect. This can effectively reduce the accident rate, enrich user scenarios, and greatly improve the user experience.

Description

Technical Field

[0001] This invention belongs to the field of windshield wiper control technology, and specifically relates to a windshield wiper operation method, system and device based on fatigue driving detection. Background Technology

[0002] With the increasing number of cars, fatigue driving is a common problem when driving for extended periods. Fatigue driving poses serious safety risks and can easily lead to serious traffic accidents. Therefore, how to remind drivers who are fatigued is a current research hotspot in the automotive industry.

[0003] To address the problem of fatigued driving, researchers have developed various fatigue detection methods. These methods can alert drivers who are fatigued, ensuring driving safety. Fatigue detection is a cutting-edge active safety technology in automobiles, playing a crucial role in improving driving safety and reducing accident rates. Currently, the main fatigue warning methods include steering wheel vibration, voice prompts, and air conditioning cooling.

[0004] Current technologies primarily work by detecting changes in rainfall and then controlling the windshield wiper operation mode according to a pre-programmed sequence. This prevents the wipers from operating in a single mode for extended periods, thus mitigating driver fatigue. However, this method mainly intervenes before driver fatigue sets in and can only provide preventative relief. It is ineffective in alerting drivers who are already fatigued and only works in rainy weather, limiting its application. Summary of the Invention

[0005] To address the above problems, this invention discloses a windshield wiper operation method based on fatigue driving detection, comprising the following steps:

[0006] A warning message will be issued when fatigue driving is detected;

[0007] Check if it's raining;

[0008] If so, adjust the wiper frequency to the first setting;

[0009] Determine if fatigue driving has subsided;

[0010] If yes, switch the windshield wipers to the second setting.

[0011] Furthermore, the step of issuing a warning message upon detecting fatigued driving includes the following steps:

[0012] While the vehicle is in motion, check for signs of driver fatigue.

[0013] The criteria for judging fatigued driving are as follows:

[0014] Mild fatigue: Within the first set time window, the driver's cumulative eye-closing time is 3 seconds ≤ 4 seconds; or within the second set time window, the driver yawns a times.

[0015] Moderate fatigue: Within the first set time window, the driver's cumulative eye-closing time is 4 seconds ≤ and < 5 seconds; or within the second set time window, the driver yawns b times.

[0016] Severe fatigue: Within the first set time window, the driver's cumulative eye-closing time is 5 seconds ≤ 6 seconds; or within the second set time window, the driver yawns c times.

[0017] Furthermore, the detection of whether it has rained also includes the following steps:

[0018] If not, spray the wiper fluid first, then start the wipers and run them at the third speed for time T0.

[0019] Determine whether fatigue driving has disappeared within time T0;

[0020] If so, the windshield wipers will stop operating.

[0021] Furthermore, after determining whether fatigue driving has disappeared within time T0, the process also includes the following steps:

[0022] If not, spray the wiper fluid again;

[0023] Switch the wipers to the first setting and spray wiper fluid every T1 time interval;

[0024] Determine if fatigue driving has subsided;

[0025] If yes, the wipers will stop; if no, the wipers will remain in the first position.

[0026] Furthermore, the operating frequency of the first gear is 61 to 65 times per minute.

[0027] Furthermore, the operating frequency of the second gear is 40 times / minute to 60 times / minute.

[0028] Furthermore, the operating frequency of the third gear is 35 to 39 times per minute.

[0029] Furthermore, the value of T0 ranges from 10 to 20 seconds;

[0030] The value of T1 ranges from 20 to 30 seconds.

[0031] This invention also discloses a windshield wiper operation system based on fatigue driving detection, comprising:

[0032] The fatigue driving detection controller is used to issue a warning message when fatigue driving is detected and to determine whether fatigue driving has disappeared;

[0033] Rain gauges are used to detect whether it is raining;

[0034] Wiper motor, used to adjust the oscillation frequency of the wipers;

[0035] The wiper washer controller is used to adjust the wiper frequency to the first setting and to switch the wipers to the second setting.

[0036] The present invention also discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described windshield wiper operation method based on fatigue driving detection.

[0037] Compared with the prior art, the embodiments of the present invention have at least the following advantages: The present invention designs different reminder methods for fatigue driving in different scenarios through the vibration effect of the windshield wipers, which are easily noticed by the driver and have a more obvious reminder effect. This can effectively reduce the accident rate, enrich the user's usage scenarios, and greatly improve the user experience.

[0038] In rainy conditions, when fatigued driving behavior is detected, a command is sent to increase the oscillation speed of the windshield wipers until the fatigue disappears. The wipers then switch to the normal adjustment setting. Through the friction between the wipers and the windshield, a certain amount of friction noise is generated, and a vibration effect is produced, which effectively reminds the driver of fatigued driving behavior. This increases the means of fatigued driving reminders, can reduce the accident rate, and play an auxiliary reminder role.

[0039] When it's not raining, running the windshield wipers on a slow setting for a certain period of time will alert the driver to potential fatigue through the wiping motion, the sound of the wipers rubbing against the windshield, and the vibrations generated. This is a more effective way to warn the driver if fatigue is present. If the slow setting doesn't work, switch to a high setting. This increases the wiping speed, the noise from the wipers against the windshield, and the vibration, thus alerting the driver to potential fatigue and ensuring driving safety.

[0040] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A flowchart illustrating a windshield wiper operation method based on fatigue driving detection according to an embodiment of the present invention is shown.

[0043] Figure 2 A schematic diagram of a windshield wiper operation system based on fatigue driving detection according to an embodiment of the present invention is shown.

[0044] Reference numerals in the attached diagram: 1. Fatigue driving detection controller; 2. Wiper and washer controller; 3. Rain sensor; 4. Wiper motor; 5. Washer motor; 6. Washer fluid level sensor; 7. Washer reservoir. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Existing fatigue driving warning methods include steering wheel vibration, voice prompts, and air conditioning cooling. Specifically, when driver fatigue is detected, the control device immediately causes the steering wheel to vibrate irregularly, making the driver feel a noticeable vibration; the control device immediately issues a high-decibel voice announcement, such as "Unsafe behavior of fatigue driving has been detected. Please slow down or stop and rest immediately," providing a clear warning to the driver; the control device can also immediately turn on the air conditioning, rapidly blowing out cold air to significantly lower the interior temperature, making the driver feel a substantial temperature change. While these three methods can effectively alert drivers to fatigue, their effectiveness is sometimes unsatisfactory. Therefore, a new fatigue driving warning method needs to be developed to achieve a better effect and ensure driving safety.

[0047] Windshield wipers are a common automotive accessory, primarily used to clear rain, snow, and dust from the windshield that obstruct vision. During use, windshield wipers generate vibrations, especially noticeable at high speeds. When the driver fatigue detection controller 1 detects driver fatigue, it can adjust the operation of the windshield wipers to provide a degree of assistance in alerting the driver.

[0048] Figure 1 A flowchart illustrating a windshield wiper operation method based on fatigue driving detection according to an embodiment of the present invention is shown. Figure 1 As shown, the present invention proposes a windshield wiper operation method based on fatigue driving detection, which includes the following steps:

[0049] Step S1: When driver fatigue is detected, a warning message is immediately issued;

[0050] Step S2: After receiving the warning message, check if it is raining outside the vehicle; execute the windshield washer function to warn and remind the driver and assist in anti-fatigue; if yes, proceed to step S211; if no, proceed to step S221.

[0051] Step S211: Adjust the wiper frequency to the first setting;

[0052] Step S212: Determine whether the driver's fatigue has disappeared; if yes, proceed to step S213; if no, proceed to step S211.

[0053] Step S213: Switch the wiper frequency to the second setting.

[0054] The first gear operates more frequently than the second gear.

[0055] The windshield wiper operation method based on fatigue driving detection of the present invention, in rainy conditions, when fatigue driving behavior is detected, sends a command to increase the oscillation speed of the windshield wipers until the fatigue driving disappears, and the windshield wipers switch to the normal adjustment mode. Through the friction between the windshield wipers and the windshield, a certain amount of friction noise is generated and a vibration effect is produced, which effectively reminds the driver of fatigue driving behavior, increases the means of fatigue driving reminder, can reduce the accident rate, and plays an auxiliary reminder role.

[0056] In some embodiments, the step of issuing a warning message upon detecting fatigue driving includes the following steps:

[0057] Step S0: When the vehicle is in motion, detect whether there is fatigue driving.

[0058] The driving conditions are as follows: vehicle speed ≥ 5km / h and the vehicle power supply is in the ON position (vehicle power is connected).

[0059] The criteria for judging fatigued driving are as follows:

[0060] Mild fatigue: Within the first set time window, the driver's cumulative eye-closing time is 3 seconds ≤ 4 seconds; or within the second set time window, the driver yawns a times.

[0061] Moderate fatigue: Within the first set time window, the driver's cumulative eye-closing time is 4 seconds ≤ and < 5 seconds; or within the second set time window, the driver yawns b times.

[0062] Severe fatigue: Within the first set time window, the driver's cumulative eye-closing time is 5 seconds ≤ 6 seconds; or within the second set time window, the driver yawns c times. Where a, b, and c are positive integers greater than 0 and can be set according to actual conditions. The first and second set time windows can be set according to actual conditions.

[0063] For example, the criteria for judging fatigued driving are as follows:

[0064] Mild fatigue: Within a 10-second time window, the driver's cumulative eye-closing time reaches 3 seconds; or within a 60-second time window, the driver yawns 3 times.

[0065] Moderate fatigue: Within a 10-second time window, the driver's cumulative eye-closing time reaches 4 seconds; or within a 60-second time window, yawning 4 times;

[0066] Severe fatigue: Within a 10-second time window, the driver's cumulative eye-closing time reaches 5 seconds; or within a 60-second time window, the driver yawns 5 times.

[0067] When the vehicle is in motion, the fatigue driving detection controller 1 works synchronously to detect whether there is fatigue driving in real time, providing accurate information for the subsequent operation of the windshield wipers and ensuring driving safety.

[0068] In some embodiments, the detection of whether it has rained further includes the following step (in the case of no rain):

[0069] Step S221: First spray the wiper fluid, then start the wipers and run them at the third speed for time T0; wherein the operating frequency of the third speed is lower than that of the second speed.

[0070] Step S222: Determine whether the driver's fatigue driving behavior has disappeared within time T0; if yes, proceed to step S224; if no, proceed to step S223.

[0071] Step S224: Stop the windshield wipers.

[0072] When it is not raining, running the windshield wipers on a slow setting for a certain period of time will alert the driver to fatigue through the movement of the wipers, the sound of friction between the wipers and the windshield, and the vibrations generated by the wipers. The alerting effect is more obvious even when it is not raining.

[0073] In some embodiments, after determining whether fatigue driving has disappeared within time T0, the method further includes the following steps:

[0074] Step S223: Spray the wiper fluid again;

[0075] Step S225: Switch the wipers to the first setting and spray wiper fluid every T1 time interval during high-speed wiper operation;

[0076] Step S226: Determine whether the driver's fatigue driving behavior has disappeared or whether the washer fluid has run out during high-speed windshield wiping; if yes, proceed to step S224; if no, proceed to step S225.

[0077] When it is not raining, if the windshield wipers are not effective in alerting the driver to fatigue when running on the slow setting, adjust the wipers to the high setting. This will increase the wiping speed of the wipers, the friction noise between the wipers and the windshield, and the vibration effect of the wipers, thereby alerting the driver to fatigue and ensuring driving safety.

[0078] In some embodiments, the operating frequency of the first gear is 61 to 65 times per minute. For example, the operating frequency of the first gear is 62 times per minute.

[0079] In some embodiments, the operating frequency of the second gear is 40 times / minute to 60 times / minute.

[0080] In some embodiments, the operating frequency of the third gear is 35 to 39 times per minute. For example, the operating frequency of the third gear is 38 times per minute.

[0081] The windshield wipers are designed with at least three speed settings: a first speed, a second speed, and a third speed, with the operating frequency decreasing progressively across these three speeds. This invention, by designing the wipers with three different operating speeds, each with a different operating frequency, causes the friction noise and vibration generated by the wipers to increase progressively with each speed setting. This gradual increase in friction noise and vibration serves as a warning to alert the driver to fatigue. When the driver is fatigued, the third speed setting is used first; if the warning effect is insufficient, the wipers switch to the first speed setting to further alert the driver to fatigue and ensure driving safety.

[0082] In some embodiments, the value of T0 ranges from 10 to 20 seconds;

[0083] The value of T1 ranges from 20 to 30 seconds.

[0084] Different operating times are set for different speed settings. This serves two purposes: firstly, different speed settings provide sufficient reminders; secondly, if the current speed setting is ineffective, the wipers are quickly switched to a higher operating frequency setting, thus achieving the goal of alerting drivers to driver fatigue. Extensive testing showed that a T0 setting of 15 seconds and a T1 setting of 25 seconds provided the best overall reminder effect.

[0085] Figure 2 A schematic diagram of a windshield wiper operation system based on fatigue driving detection according to an embodiment of the present invention is shown. Figure 2 As shown, the present invention also discloses a windshield wiper operation system based on fatigue driving detection, including: a fatigue driving detection controller 1, a windshield wiper and washer controller 2, a rain sensor 3, a windshield wiper motor 4, a washer motor 5, a washer fluid level sensor 6, and a washer reservoir 7.

[0086] The fatigue driving detection controller 1 is electrically connected to the windshield wiper and washer controller 2;

[0087] The wiper washer controller 2 is connected to the rain sensor 3;

[0088] The wiper washing controller 2 is connected to the wiper motor 4;

[0089] The wiper washing controller 2 is connected to the washing motor 5;

[0090] The washing motor 5 is installed inside the washing pot 7;

[0091] The washing liquid level sensor 6 is installed inside the washing pot 7.

[0092] The fatigue driving detection controller 1 is used to issue a warning message when fatigue driving is detected and to determine whether fatigue driving has disappeared;

[0093] The wiper and washer controller 2 is used to drive the wiper motor 4 to put the wipers in different working positions, to drive the washer motor 5, to adjust the wiper frequency to the first position, and to switch the wipers to the second position.

[0094] Rain sensor 3 is used to detect whether it is raining;

[0095] Wiper motor 4 is used to adjust the oscillation frequency of the wipers;

[0096] Washer motor 5 is used to spray wiper fluid onto the windshield.

[0097] The washer fluid level sensor 6 is used to detect the level of washer fluid in the washer reservoir 7 and to feed back the washer fluid level information to the washer fluid controller 2.

[0098] Washer bottle 7 is used to store wiper fluid.

[0099] The windshield wiper operation system based on fatigue driving detection of the present invention can realize the above-mentioned windshield wiper operation method based on fatigue driving detection, and serve the purpose of reminding drivers of fatigued driving.

[0100] This invention also provides a vehicle, including a vehicle body and the aforementioned windshield wiper operation system based on fatigue driving detection, disposed within the vehicle body. The windshield wiper operation system based on fatigue driving detection is as described above. In the above technical solution, different reminder methods are employed according to different application scenarios of fatigue driving. The vibration of the windshield wipers and the resulting friction noise achieve the purpose of reminding users of fatigue driving, enriching user scenarios and greatly improving the user experience.

[0101] The present invention also discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described windshield wiper operation method based on fatigue driving detection.

[0102] The present invention also discloses a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described windshield wiper operation method based on fatigue driving detection.

[0103] It should be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this disclosure. Therefore, "in one embodiment" or "one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this disclosure, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this disclosure. The sequence numbers of the above-described embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0104] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0105] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A windshield wiper operation method based on fatigue driving detection, characterized in that, The following steps are involved: A warning message will be issued when fatigue driving is detected; Check if it's raining; If so, adjust the wiper frequency to the first setting; Determine if fatigue driving has subsided; If yes, switch the wipers to the second setting; The detection of whether it has rained also includes the following steps: If not, spray the wiper fluid first, then start the wipers and run them at the third speed for time T0. Determine whether fatigue driving has disappeared within time T0; If yes, then stop the windshield wipers; After determining whether fatigue driving has disappeared within time T0, the following steps are also included: If not, spray the wiper fluid again; Switch the wipers to the first setting and spray wiper fluid every T1 time interval; Determine if fatigue driving has subsided; If yes, the wipers will stop; if no, the wipers will remain in the first position. The operating frequency of the first gear is 61 times / min to 65 times / min; The operating frequency of the second gear is 40 times / minute to 60 times / minute; The operating frequency of the third gear is 35 to 39 times per minute.

2. The windshield wiper operation method based on fatigue driving detection according to claim 1, characterized in that, Before issuing a warning message upon detecting fatigued driving, the following steps are included: While the vehicle is in motion, check for signs of driver fatigue. The criteria for judging fatigued driving are as follows: Mild fatigue: Within the first set time window, the driver's cumulative eye-closing time is 3 seconds ≤ 4 seconds; or within the second set time window, the driver yawns a times. Moderate fatigue: Within the first set time window, the driver's cumulative eye-closing time is 4 seconds ≤ and < 5 seconds; or within the second set time window, the driver yawns b times. Severe fatigue: Within the first set time window, the driver's cumulative eye-closing time is 5 seconds ≤ 6 seconds; or within the second set time window, the driver yawns c times.

3. The windshield wiper operation method based on fatigue driving detection according to claim 1, characterized in that, The value of T0 ranges from 10 to 20 seconds; The value of T1 ranges from 20 to 30 seconds.

4. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the windshield wiper operation method based on fatigue driving detection as described in any one of claims 1-3.

Images