Windscreen wiper operation method, system and equipment based on fatigue driving detection

Abstract

The invention discloses a windscreen wiper operation method, system and equipment based on fatigue driving detection, and belongs to the technical field of windscreen wiper control. The windscreen wiper operation method comprises the following steps that when fatigue driving is detected, warning information is sent out; detecting whether it rains or not; if yes, the frequency of the windscreen wiper is adjusted to a first gear; judging whether fatigue driving disappears or not; and if yes, the windscreen wiper is switched to the second gear. According to fatigue driving in different scenes, different reminding modes are designed through the vibration effect of the windscreen wiper, the automobile windscreen wiper is easily perceived by a driver, the reminding effect is more obvious, the accident rate can be effectively reduced, the use scene of a user is enriched, and the user experience effect is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of windshield wiper control, and in particular relates to a windshield wiper operation method, system and device based on fatigue driving detection. Background Art

[0002] As the number of cars increases, driving fatigue is prone to occur when driving for a long time. Fatigue driving poses a serious safety risk and can easily lead to serious traffic accidents. Therefore, how to remind drivers who are driving fatigued is currently a research hotspot in the automotive industry.

[0003] In response to the problem of fatigue driving, scientific research and technical personnel have developed different fatigue driving detection methods, which can remind drivers who are driving fatigued and ensure driving safety. Fatigue driving detection is a cutting-edge active safety technology for automobiles, which plays an important role in improving driving safety and reducing the accident rate. The current mainstream fatigue driving reminder methods mainly include steering wheel vibration, voice reminders, air conditioning cooling, etc.

[0004] The existing technology mainly detects the change of rainfall, and then controls the operation mode of the wiper according to the set program to prevent the wiper from being in a single operation mode for a long time, thereby preventing the driver from driving fatigue. However, this method mainly intervenes before driving fatigue, which can only play a preventive role. It cannot effectively remind the driver of driving fatigue, and it only works on rainy days, which limits the scope of application. Summary of the invention

[0005] In view of the above problems, the present invention discloses a wiper operation method based on fatigue driving detection, comprising the following steps:

[0006] When fatigue driving is detected, a warning message is issued;

[0007] Detect if it is raining;

[0008] If yes, adjust the wiper frequency to the first gear;

[0009] Determine whether fatigue driving has disappeared;

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

[0011] Furthermore, when fatigue driving is detected, the following steps are included before issuing a warning message:

[0012] When the vehicle is in motion, detect whether there is fatigue driving;

[0013] The criteria for judging fatigue 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, yawn a times;

[0015] Moderate fatigue: within the first set time window, the driver's cumulative eye closing time is 4 seconds or less and less than 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, c yawns occur.

[0017] Furthermore, the detecting whether it is after raining also includes the following steps:

[0018] If no, first spray the wiper washer fluid, then start the wiper and run it in the third gear for T0 time;

[0019] Determine whether driving fatigue disappears within T0;

[0020] If yes, stop the wiper operation.

[0021] Furthermore, the method further comprises the following steps after determining whether the fatigue driving disappears within the T0 time:

[0022] If no, spray the wiper washer fluid again;

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

[0024] Determine whether fatigue driving has disappeared;

[0025] If yes, stop the wiper operation; if no, keep the wiper in the first gear.

[0026] Furthermore, the operating frequency of the first gear is 61 times / minute to 65 times / 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 times / minute to 39 times / minute.

[0029] Furthermore, the value range of T0 is 10 to 20 seconds;

[0030] The value range of T1 is 20 to 30 seconds.

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

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

[0033] Rain sensor, used to detect whether it is raining;

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

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

[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. When the processor executes the computer program, the above-mentioned wiper operation method based on fatigue driving detection is implemented.

[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 wiper, which is easy for the driver to notice and has a more obvious reminder effect, which can effectively reduce the accident rate, enrich the user usage scenarios, and greatly improve the user experience effect;

[0038] In rainy conditions, when fatigue driving is detected, the wiper's swing speed is increased by sending a command until the fatigue driving disappears, and the wiper switches to the normal adjustment gear. Through the friction between the wiper and the front windshield, a certain amount of friction noise is emitted, and a vibration effect is produced, which effectively reminds the driver of fatigue driving behavior, increases the reminder means for fatigue driving, can reduce the accident rate, and play an auxiliary reminder role;

[0039] In the case of no rain, start the wipers to a slow gear and run them for a certain period of time. Through the shaking of the wipers, the sound produced by the friction between the wipers and the front windshield, and the vibration of the wipers, the purpose of reminding the driver of fatigue driving in no rain is achieved, and the reminder effect is more obvious. When the wipers running at a slow gear do not play the role of reminding fatigue driving, adjust the wipers to a high gear, increase the shaking rate of the wipers, the friction sound between the wipers and the front windshield, and at the same time increase the vibration effect of the wipers, thereby reminding the driver of fatigue driving and ensuring driving safety.

[0040] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A schematic flow chart of a 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 wiper operation system based on fatigue driving detection according to an embodiment of the present invention is shown.

[0044] Figure numerals: 1. Fatigue driving detection controller; 2. Wiper and washing controller; 3. Rain sensor; 4. Wiper motor; 5. Washing motor; 6. Washing liquid level sensor; 7. Washing pot. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The existing methods of reminding drivers of fatigue driving include steering wheel vibration, voice reminder, air conditioning and cooling. Specifically, when fatigue driving behavior is detected in the driver, the control device immediately drives the steering wheel to vibrate irregularly, so that the driver can feel obvious vibration; the control device immediately issues a high-decibel voice broadcast, such as "unsafe behavior of fatigue driving is currently detected, please slow down or stop to rest immediately", so that the driver can hear obvious reminder information; the control device can also immediately turn on the air conditioning and cooling, quickly blow out cold air, greatly reduce the temperature in the car, and make the driver feel the drastic change in temperature. Although the above three reminder methods can play a role in reminding the driver of fatigue driving behavior, sometimes the reminder effect is not good. Therefore, it is necessary to develop a new fatigue driving reminder method to achieve a better fatigue driving reminder effect and ensure driving safety.

[0047] The wiper is a common accessory on the car, mainly used to clear the rain, snow and dust on the windshield that obstruct the view. During the use of the wiper, a certain vibration will be generated, especially at high speed, the vibration effect is more obvious. After the fatigue driving detection controller 1 detects fatigue driving, it can play a certain auxiliary role in reminding the driver by controlling the operation of the wiper.

[0048] Figure 1 FIG. 2 is a flow chart of a wiper operation method based on fatigue driving detection according to an embodiment of the present invention. Figure 1 As shown, a wiper operation method based on fatigue driving detection proposed by the present invention comprises the following steps:

[0049] Step S1: When the driver is detected to be driving fatigued, a warning message is immediately issued;

[0050] Step S2: after receiving the warning message, detect whether it is raining outside the vehicle; execute the wiper washing action to achieve the auxiliary effect of warning the driver and anti-fatigue; if yes, jump to step S211; if no, jump to step S221;

[0051] Step S211: adjusting the wiper frequency to the first gear;

[0052] Step S212: Determine whether the driver's fatigue driving disappears; if yes, jump to step S213; if no, jump to step S211;

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

[0054] Among them, the operating frequency of the first gear is higher than the operating frequency of the second gear.

[0055] The wiper operation method based on fatigue driving detection of the present invention, when fatigue driving behavior is detected in raining conditions, increases the swing speed of the wiper by sending a command until the fatigue driving disappears, and the wiper switches to a normal adjustment gear, and emits a certain amount of friction noise and produces a vibration effect through the friction between the wiper and the front windshield, thereby effectively reminding the driver of the presence of fatigue driving behavior, increasing the reminder means for fatigue driving, being able to reduce the accident rate, and playing an auxiliary reminder role.

[0056] In some embodiments, when fatigue driving is detected, before issuing a warning message, the following steps are included:

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

[0058] Among them, the driving state condition is that the vehicle speed is ≥5km / h and the vehicle power is in the ON gear (the vehicle power is connected).

[0059] The criteria for judging fatigue 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, yawn a times;

[0061] Moderate fatigue: within the first set time window, the driver's cumulative eye closing time is 4 seconds or less and less than 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. Wherein, a, b, c are positive integers greater than 0 and can be set according to actual conditions. The first set time window and the second set time window can be set according to actual conditions.

[0063] Exemplarily, the criteria for judging fatigue driving are as follows:

[0064] Mild fatigue: within a 10-second window, the driver closes his eyes for a total of 3 seconds; or yawns 3 times within a 60-second window;

[0065] Moderate fatigue: The driver closes his eyes for 4 seconds in total within a 10-second window; or yawns 4 times within a 60-second window;

[0066] Severe fatigue: Within a 10-second time window, the driver closes his eyes for a total of 5 seconds; or yawns 5 times within a 60-second time window.

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

[0068] In some embodiments, the detecting whether it is after raining further comprises the following steps (when it is not raining):

[0069] Step S221: first spraying the wiper washer fluid, and then starting the wiper to operate at the third gear for a time T0; wherein the operating frequency of the third gear is lower than the operating frequency of the second gear;

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

[0071] Step S224: Stop the wiper operation.

[0072] When it is not raining, start the wipers and run them in slow gear for a certain period of time. Through the shaking of the wipers, the sound produced by the friction between the wipers and the front windshield, and the vibrations generated by the wipers, the driver can be reminded of fatigue driving even when it is not raining, and the reminder effect is more obvious.

[0073] In some embodiments, the step of determining whether driving fatigue disappears within T0 further includes the following steps:

[0074] Step S223: spraying the wiper washer fluid again;

[0075] Step S225: Switch the wiper to the first gear, and spray wiper cleaning fluid every T1 time during the high-speed wiper operation;

[0076] Step S226: Determine whether the driver's fatigue driving behavior disappears or the washer fluid is used up during high-speed wiping; if yes, jump to step S224; if no, jump to step S225.

[0077] In the case of no rain, when the wipers are running in a slow gear and do not serve the purpose of reminding the driver of fatigue driving, adjust the wipers to a high gear, increase the shaking rate of the wipers, the friction sound between the wipers and the front windshield, and the vibration effect of the wipers, thereby reminding the driver of fatigue driving and ensuring driving safety.

[0078] In some embodiments, the operating frequency of the first gear is 61 times / min to 65 times / min. Exemplarily, the operating frequency of the first gear is 62 times / min.

[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 times / min to 39 times / min. Exemplarily, the operating frequency of the third gear is 38 times / min.

[0081] The wiper is designed to have at least three gears according to actual needs, namely the first gear, the second gear and the third gear, and the operating frequencies of the three gears are gradually reduced. The present invention designs the wiper to have three different working gears, each with a different working frequency. When the wiper works in different gears, the friction sound between the wiper and the front windshield increases step by step, and the vibration generated by the wiper also increases step by step. The purpose of reminding the driver of fatigue driving is achieved by gradually enhancing the friction sound and vibration. When the driver is in fatigue driving, the third gear is used to remind first; if the reminder effect is not obvious, the wiper is switched to the first gear to remind the driver of fatigue driving, so that the driver can eliminate fatigue and ensure driving safety.

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

[0083] The value range of T1 is 20 to 30 seconds.

[0084] Different gears have different operating times. On the one hand, different gears can fully remind you. On the other hand, if the current gear does not remind you, the wiper will be quickly switched to a gear with a higher operating frequency, so as to achieve the purpose of fatigue driving reminder. After a large number of experimental tests, T0 is set to 15 seconds and T1 is set to 25 seconds, which has the best overall reminder effect.

[0085] Figure 2 FIG. 2 shows a schematic diagram of a wiper operation system based on fatigue driving detection according to an embodiment of the present invention. Figure 2 As shown, the present invention also discloses a wiper operation system based on fatigue driving detection, comprising: a fatigue driving detection controller 1, a wiper and washing controller 2, a rain sensor 3, a wiper motor 4, a washing motor 5, a washing liquid level sensor 6 and a washing pot 7;

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

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

[0088] The wiper and 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 arranged in the washing pot 7;

[0091] The washing liquid level sensor 6 is arranged in the washing pot 7 .

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

[0093] A wiper and washer controller 2, for driving a wiper motor 4 to put the wiper in different working gears, for driving a washer motor 5, for adjusting the wiper frequency to a first gear and for switching the wiper to a second gear;

[0094] A rain sensor 3, used to detect whether it is raining;

[0095] A wiper motor 4, used to adjust the oscillation frequency of the wiper;

[0096] A washing motor 5, used for spraying wiper washing liquid to the front windshield;

[0097] The washer liquid level sensor 6 is used to detect the liquid level of the wiper washer liquid in the washer pot 7 and feed back the liquid level information of the wiper washer liquid to the wiper washer controller 2;

[0098] The washing pot 7 is used to store the windshield wiper washing liquid.

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

[0100] The embodiment of the present invention further provides a car, which includes a car body, and the above-mentioned wiper operation system based on fatigue driving detection arranged in the car body. The wiper operation system based on fatigue driving detection can refer to the above description. In the above technical scheme, different reminder methods are adopted according to fatigue driving in different application scenarios, and the purpose of reminding fatigue driving is achieved through the vibration of the wiper and the friction sound generated, which enriches the user usage scenarios and greatly improves the user experience effect.

[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. When the processor executes the computer program, the above-mentioned wiper operation method based on fatigue driving detection is implemented.

[0102] The present invention also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the wiper operation method based on fatigue driving detection is implemented.

[0103] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present disclosure. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present disclosure, the size of the serial number of the above-mentioned processes does not mean the 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 the present disclosure. The serial numbers of the embodiments of the present disclosure are for description only and do not represent the advantages and disadvantages of the embodiments.

[0104] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

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

Claims

1. A wiper operation method based on fatigue driving detection, characterized in that: The following steps are involved: When fatigue driving is detected, a warning message is issued; Detect if it is raining; If yes, adjust the wiper frequency to the first gear; Determine whether fatigue driving has disappeared; If yes, switch the wipers to the second gear.

2. The wiper operation method based on fatigue driving detection according to claim 1, characterized in that: When fatigue driving is detected, the following steps are included before issuing a warning message: When the vehicle is in motion, detect whether there is fatigue driving; The criteria for judging fatigue 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, yawn a times; Moderate fatigue: within the first set time window, the driver's cumulative eye closing time is 4 seconds or less and less than 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, c yawns.

3. The wiper operation method based on fatigue driving detection according to claim 1, characterized in that: The detecting whether it is after raining also includes the following steps: If no, first spray the wiper washer fluid, then start the wiper and run it in the third gear for T0 time; Determine whether driving fatigue disappears within T0; If yes, stop the wiper operation.

4. The wiper operation method based on fatigue driving detection according to claim 3, characterized in that: After determining whether the fatigue driving disappears within T0, the following steps are also included: If no, spray the wiper washer fluid again; Switch the wipers to the first gear and spray the wiper washer fluid every T1 time; Determine whether fatigue driving has disappeared; If yes, stop the wiper operation; if no, keep the wiper in the first gear.

5. The wiper operation method based on fatigue driving detection according to claim 1, characterized in that: The operating frequency of the first gear is 61 times / minute to 65 times / minute.

6. The wiper operation method based on fatigue driving detection according to claim 1, characterized in that: The operating frequency of the second gear is 40 times / minute to 60 times / minute.

7. The wiper operation method based on fatigue driving detection according to claim 3, characterized in that: The operating frequency of the third gear is 35 times / minute to 39 times / minute.

8. The wiper operation method based on fatigue driving detection according to claim 4, characterized in that: The value range of T0 is 10 to 20 seconds; The value range of T1 is 20 to 30 seconds.

9. A wiper operation system based on fatigue driving detection, characterized in that: include: A fatigue driving detection controller is used to issue a warning message when fatigue driving is detected and to determine whether the fatigue driving has disappeared; Rain sensor, used to detect whether it is raining; Wiper motor, used to adjust the oscillation frequency of the wiper; The wiper and washer controller is used to adjust the wiper frequency to a first gear and to switch the wiper to a second gear.

10. 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, the wiper operation method based on fatigue driving detection according to any one of claims 1 to 8 is implemented.

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