A driver fatigue driving detection and warning system

Abstract

The present invention discloses a driver fatigue detection and warning system. The detection and warning system includes a steering wheel having an annular rim. An image acquisition device is provided on the rim of the steering wheel. An image processing device is provided on the exterior of the steering wheel. The image processing device acquires images wirelessly transmitted by the image acquisition device. The image acquisition device determines whether the driver is fatigued based on the size of the eye opening, blinking frequency, mouth size, and yawning frequency. The detection and warning system also includes a wristband. When the image processing device determines that the driver is fatigued, the wristband vibrates to provide a reminder. The present invention can conveniently remind the driver.

Description

Technical Field

[0001] The present invention belongs to the technical field of assisted driving, and in particular relates to a driver fatigue detection and warning system. Background Art

[0002] With the rapid development of my country's transportation industry, the number of both commercial and private vehicles has been growing rapidly year by year. At the same time, major traffic accidents caused by vehicle traffic are also occurring more frequently. Analysis shows that abnormal driving behaviors, such as answering the phone while driving and driving while fatigued, are the main causes of traffic accidents. The lack of information technology application within relevant departments, coupled with a lack of dynamic analysis of driving data from vehicles on the road and effective analysis of driver behavior, is a major factor contributing to the increasing frequency of major traffic accidents.

[0003] Although there are devices for detecting driver fatigue, these devices are all installed on the front side of the cab. Not only is there a possibility of obstruction, but in order to cooperate with the rotation of the driver's head, the existing detection devices are all set to be rotatable, which will inevitably attract the driver's attention. Summary of the Invention

[0004] In view of the above technical problems, the present invention provides a driver fatigue driving detection and warning system, which aims to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0006] A driver fatigue detection and warning system includes a steering wheel 1 having a circular rim 2. An image acquisition device is provided on the rim 2 of the steering wheel 1. An image processing device is provided on the outside of the steering wheel 1 (can be provided at any location in the vehicle that does not affect driving). The image processing device acquires images wirelessly transmitted by the image acquisition device. Simultaneously, the image acquisition device (locates the face, determines whether a complete face is obtained, and has both eyes) determines whether the driver is fatigued based on the size of the eye opening, the frequency of blinking, the size of the mouth, and the frequency of yawning. The detection and warning system also includes a wristband 6. When the image processing device determines that the driver is fatigued, the wristband 6 vibrates to provide a reminder (the vibration device is provided inside the wristband body 601 and is a conventional vibration device in the prior art).

[0007] The steering wheel 1 is also provided with an alcohol measuring system 3. The alcohol measuring system 3 has an installation cavity 301 opened on the steering wheel 1. The installation cavity 301 is cylindrical and has even external conduction at both ends. A left block net 302 and a right block net 303 are fixed to the left and right ports of the installation cavity 301 respectively (the left block net 302 and the right block net 303 are detachable). A left fan 304 and a left motor 305 and a right fan 306 and a right motor 307 are respectively provided on the inner sides of the left block net 302 and the right block net 303. An alcohol detector 308 is fixed in the middle of the installation cavity 301.

[0008] The wristband 6 has a wristband main body 601, and a left ring band 602 and a right ring band 603 are hinged on the left and right sides of the wristband main body 601 respectively, and a left magnet 604 and a right magnet 605 are fixed to the ends of the left ring band 602 and the right ring band 603 respectively. A left pad 606 and a right pad 607 are provided on the inner side walls of the left ring band 602 and the right ring band 603, and a connecting strip 608 is hinged between the left ring band 602 and the right ring band 603. A charging slot 609 is provided on one side of the wristband main body 601, and a groove 4 cooperating with the wristband main body 601 and a charging head 5 cooperating with the slot 609 are provided on the side of the steering wheel 1.

[0009] The rim 2 includes a rim shell 8 and a cover 7 covering the notch of the rim shell 8. A pressure sensor 9 is fixed to the cover 7 and the connection with the rim shell 8. Track supports 13 are fixed to the left and right inner sides of the rim shell 8, and a slide rail 14 is fixed to the track support 13. The image acquisition device includes a first support ball 10, which has a flat surface 19 machined on it. First channels 11 and first slide grooves 12 are defined on the left and right sides of the first support ball 10. The track support 13 is located in the first channel 11, and the slide rail 14 is located in the first slide groove 12. A camera 17 is provided on the top of the first support ball 10, and a first motor 18 is provided on the bottom of the first support ball 10. The first motor 18 is connected to a first gear 15. An annular rack 16 is fixed to the bottom of the rim shell 8, and the first gear 15 meshes with the annular rack 16. A first mounting slot 21 is defined on the first support ball 10, and a support member 20 is disposed in the first mounting slot 21.

[0010] A reminder device is also provided inside the rim 2, and the reminder device has a second support ball 26, and a second channel 27 and a second slide groove 28 are provided on both sides of the second support ball 26, the track support 13 is in the second channel 27, and the slide rail 14 is in the second slide groove 28, and a second motor 29 is provided at the lower part of the second support ball 26, and the second motor 29 is connected to the second gear 30, and the second gear 30 is engaged with the annular rack 16, and a cavity 31 is provided inside the second support ball 26, and a cam 32 driven by a motor is provided inside the cavity 31, and a track 33 is provided on the outer edge of the cam 32, and an inner through hole 34 is provided on the second support ball 26, and a thimble 35 is provided inside the inner through hole 34, and one end of the thimble 35 is connected to the roller 48, and the roller 48 is arranged in the track 33, and the thimble 35 can pass through the inner through hole 34 and extend from the outer through hole 36 on the rim shell 8 to press the hand.

[0011] The rim housing 8 is further provided with a fixing ring 39, which defines a space corresponding to the outer through hole 36. A slider 40 and a first spring 41 are located within the space. One end of the slider 40 extends from the space and is secured with a blocking block 42. The blocking block 42 has an opening 43, within which a second spring 44 is secured. The second spring 44 is secured to a blocking head 45, the diameter of which matches that of the outer through hole 36. The fixing ring 39 is provided with an opening slot 47, and a lever 46 is secured to the slider 40. The lever 46 passes through the opening slot 47. A disc 37 is rotatably provided on the outer side of the second support ball 26. (The disc 37 is used to press the lever 46.)

[0012] The support member 20 includes a support rod 22 , a fixed head 23 , a support wheel 24 and an elastic telescopic rod 25 .

[0013] The present invention has the following technical effects:

[0014] Even if the steering wheel is turned, the image acquisition device can be located at the top of the steering wheel and can acquire images at the same position, thereby improving the judgment accuracy of image processing;

[0015] The reminder device can automatically move to the position corresponding to the hand according to the position of the hand grasping, so as to facilitate the reminder;

[0016] The present invention reduces the number of components with the same function by arranging both the image acquisition device and the reminder device to be movable;

[0017] The wristband of the present invention can be put on and taken off by one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A front view of the detection and early warning system of the present invention;

[0019] Figure 2 The present invention Figure 1 A magnified view of part A in FIG;

[0020] Figure 3 A side view of the detection and early warning system of the present invention;

[0021] Figure 4 Diagram of the wristband of the present invention in the open state;

[0022] Figure 5 Diagram of the closed state of the wristband of the present invention;

[0023] Figure 6 Internal state diagram of the image acquisition device of the present invention;

[0024] Figure 7 A schematic structural diagram of the image acquisition device of the present invention;

[0025] Figure 8 The present invention Figure 6 sectional view of

[0026] Figure 9 The present invention Figure 8 A magnified view of part B in FIG;

[0027] Figure 10 Internal state diagram of the reminder device of the present invention;

[0028] Figure 11 The present invention Figure 10 sectional view of

[0029] Figure 12 The present invention Figure 11 Enlarged view of part C in ;

[0030] Figure 13 Internal state diagram of the reminder device in the second embodiment of the present invention;

[0031] Figure 14 In the second embodiment of the present invention Figure 13 sectional view of

[0032] Figure 15 The present invention Figure 14 Enlarged view of part D in FIG;

[0033] In the figure, the steering wheel 1, the rim 2,

[0034] Alcohol measurement system 3, installation cavity 301, left baffle 302, right baffle 303, left fan 304, left motor 305, right fan 306, right motor 307, alcohol detector 308,

[0035] Groove 4, charging head 5, wristband 6, wristband body 601, left ring band 602, right ring band 603, left magnet 604, right magnet 605, left pad 606, right pad 607, connecting strip 608, slot 609,

[0036] Cover 7, rim shell 8, pressure sensor 9, first support ball 10, first channel 11, first slide groove 12, track support 13, slide rail 14, first gear 15, ring rack 16, camera 17, first motor 18, plane 19, support member 20, first mounting groove 21, support rod 22, fixed head 23, support wheel 24, elastic telescopic rod 25,

[0037] Second support ball 26, second channel 27, second slide groove 28, second motor 29, second gear 30, cavity 31, cam 32, track 33, inner through hole 34, ejector pin 35, outer through hole 36, disc 37, second mounting groove 38, fixing ring 39, slider 40, first spring 41, blocking block 42, opening 43, second spring 44, blocking head 45, lever 46, opening groove 47, roller 48. DETAILED DESCRIPTION

[0038] The technical solutions 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In the present invention, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood broadly. For example, they may refer to fixed or detachable connections, mechanical connections, direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0042] like Figure 1 The present invention illustrates a driver fatigue detection and warning system. The system includes a steering wheel 1 having an annular rim 2. An image acquisition device is mounted on the rim 2 of the steering wheel 1. An image processing device is located externally on the steering wheel 1 and can be positioned anywhere within the vehicle without interfering with driving. The image processing device captures images wirelessly transmitted by the image acquisition device. Simultaneously, the image processing device locates the face, identifies the eyes and mouth, and determines whether a complete face has been captured. The device then determines whether the driver is fatigued based on the extent of eye opening, blinking frequency, mouth size, and yawning frequency. Before making this determination, a standard image of the driver during normal driving must be input. The system also includes a wristband 6. When the image processing device determines the driver is fatigued, the wristband 6 vibrates to provide a warning. The vibration device, located within the wristband body 601, is a conventional vibration device used in the prior art.

[0043] like Figure 1 As shown, the steering wheel 1 is also provided with an alcohol measuring system 3. Figure 2 As shown, the alcohol measurement system 3 has an installation cavity 301 opened on the steering wheel 1. The installation cavity 301 is cylindrical and has both ends evenly connected to the outside. A left baffle 302 and a right baffle 303 are fixed to the left and right ends of the installation cavity 301, respectively. The left baffle 302 and the right baffle 303 are detachable. A left fan 304 and a left motor 305 and a right fan 306 and a right motor 307 are respectively provided on the inner sides of the left baffle 302 and the right baffle 303. An alcohol detector 308 is fixed in the middle of the installation cavity 301. The purpose of providing the left fan 304 and the right fan 306 is to form an air inlet channel so that the air in the cab can continuously pass through the alcohol detector 308. In the present invention, alcohol testing can be performed after the driver enters the cab and sits firmly, and does not need to be performed continuously during driving.

[0044] like Figure 3 、 4As shown in Figures 5 and 6, the wristband 6 has a wristband body 601, and a left band 602 and a right band 603 are hinged on the left and right sides of the wristband body 601 respectively. A left magnet 604 and a right magnet 605 are fixed to the ends of the left band 602 and the right band 603 respectively. A left cushion layer 606 and a right cushion layer 607 are provided on the inner side walls of the left band 602 and the right band 603. A connecting strip 608 is hinged between the left band 602 and the right band 603. A charging slot 609 is provided on one side of the wristband body 601. A groove 4 that cooperates with the wristband body 601 and a charging head 5 that cooperates with the slot 609 are provided on the side of the steering wheel 1. When wearing it, extend your arm into the inner side of the left band 602 and the right band 603, press the connecting strip 608 to deform it inward, as shown in Figure 6 Figure 5 As shown, the left magnet 604 and the right magnet 605 are attracted together; when it is necessary to unlock the bracelet 6, insert it into the charging head 5 in the groove 4, pull the left ring 602 and the right ring 603 outward, and move the connecting bar 608 so that it is as shown in FIG. Figure 4 The state shown (which can be considered as the original state of the wristband 6) is shown in the figure. The wristband of the present invention can be put on and taken off by one hand. Even if you remember that you have not put on the wristband while driving, you can put it on easily and conveniently. The modification of the wristband greatly improves the safety of driving.

[0045] like Figure 6-9 As shown, the rim 2 includes a rim shell 8 and a cover 7 covering the notch of the rim shell 8. A pressure sensor 9 is fixed to the connection between the cover 7 and the rim shell 8. Track supports 13 are fixed to the left and right inner side surfaces of the rim shell 8, and a slide rail 14 is fixed to the track support 13. The image acquisition device includes a first support ball 10, on which a flat surface 19 is machined. First channels 11 and first slide grooves 12 are formed on the left and right sides of the first support ball 10. The track support 13 is located in the first channel 11, and the slide rail 14 is located in the first slide groove 12. A camera 17 is provided on the upper part of the first support ball 10, and a first motor 18 is provided on the lower part of the first support ball 10. The first motor 18 is connected to a first gear 15. An annular rack 16 is fixed to the bottom of the rim shell 8, and the first gear 15 is meshed with the annular rack 16. In order to enable the first support ball 10 to move smoothly on the slide rail 14 , a first mounting groove 21 is formed on the first support ball 10 , and a support member 20 is disposed in the first mounting groove 21 .

[0046] like Figure 10-12 As shown ( Figure 13-14This is the second embodiment), which is the first embodiment of the present invention. A reminder device is further provided inside the rim 2, and the reminder device has a second support ball 26. A second channel 27 and a second slide groove 28 are provided on both sides of the second support ball 26. The track support 13 is in the second channel 27, and the slide rail 14 is in the second slide groove 28. A second motor 29 is provided at the lower part of the second support ball 26, and the second motor 29 is connected to a second gear 30. The second gear 30 is engaged with the annular rack 16. A cavity 31 is provided inside the second support ball 26, and a cam 32 driven by a motor is provided inside the cavity 31. A track 33 is provided on the outer edge of the cam 32. An inner through hole 34 is provided on the second support ball 26, and a thimble 35 is provided inside the inner through hole 34. One end of the thimble 35 is connected to a roller 48, and the roller 48 is provided in the track 33. The thimble 35 can pass through the inner through hole 34 and extend from the outer through hole 36 on the rim shell 8 to press the hand.

[0047] To prevent external dust or impurities from entering the interior of the rim shell 8, the unused outer through-hole 36 needs to be sealed. The present invention also includes a fixing ring 39 within the rim shell 8. The fixing ring 39 defines a space corresponding to the outer through-hole 36. A slider 40 and a first spring 41 are located within the space. One end of the slider 40 extends from the space and is secured with a blocking block 42. The blocking block 42 has an opening 43, within which a second spring 44 is secured. The second spring 44 is secured to a blocking head 45, the diameter of which matches the diameter of the outer through-hole 36. The fixing ring 39 defines an opening 47. A lever 46 is secured to the slider 40 and extends through the opening 47. A disc 37 is rotatably disposed on the outer side of the second support ball 26. The disc 37 is used to press the lever 46, pushing the slider 40 and thereby driving the blocking head 45 away from the outer through-hole 36. In order to enable the second supporting ball 26 to move smoothly on the slide rail 14 , a second mounting groove 38 is formed on the second supporting ball 26 , and a supporting member 20 is also disposed in the second mounting groove 38 .

[0048] The support member 20 of the present invention includes a support rod 22 , a fixing head 23 , a support wheel 24 and an elastic telescopic rod 25 .

[0049] The controller of the present invention calculates the steering wheel's rotation angle and controls the first motor to position the image acquisition device at the top of the steering wheel. Simultaneously, the controller determines the position of the hands (the present invention can have two reminder devices) based on data measured by the pressure sensor and controls the second motor to move the reminder device to the hand's grip.

[0050] The present invention has the following technical effects:

[0051] Placing the image acquisition device inside the steering wheel only requires redesigning the interior of the original wheel rim, without affecting other safety functions of the steering wheel. Furthermore, placing the image acquisition device inside the steering wheel will not attract the driver's attention, nor will it block the driver's sight, and will not affect driving.

[0052] Since the image acquisition device is movable inside the wheel rim, even if the steering wheel rotates, the image acquisition device can be located at the top of the steering wheel and can acquire images at the same position, thereby improving the judgment accuracy of image processing;

[0053] The reminder device can automatically move to the position corresponding to the hand according to the position of the hand grasping, so as to facilitate the reminder;

[0054] The present invention reduces the number of components with the same function by arranging both the image acquisition device and the reminder device to be movable;

[0055] The wristband of the present invention can be put on and taken off by one hand;

[0056] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A driver fatigue driving detection and warning system, the detection and warning system comprising a steering wheel (1), the steering wheel (1) having a circular rim (2), characterized in that: The rim (2) includes a rim shell (8) and a cover (7) covering the notch of the rim shell (8), a pressure sensor (9) is fixed at the connection between the cover (7) and the rim shell (8), track supports (13) are fixed on the left and right inner sides of the rim shell (8), and a slide rail (14) is fixed on the track support (13), and an image acquisition device is provided on the rim (2) of the steering wheel (1), and the image acquisition device includes a first support ball (10), a plane (19) is processed on the first support ball (10), a first channel (11) and a first slide groove (12) are opened on the left and right sides of the first support ball (10), the track support (13) is in the first channel (11), the slide rail (14) is in the first slide groove (12), and the A camera (17) is provided on the upper part of the first support ball (10), a first motor (18) is provided on the lower part of the first support ball (10), the first motor (18) is connected to the first gear (15), an annular rack (16) is fixed to the bottom of the rim shell (8), the first gear (15) is meshed with the annular rack (16), a first mounting groove (21) is provided on the first support ball (10), a support member (20) is provided in the first mounting groove (21), an image processing device is provided on the steering wheel (1), the image processing device is provided on the outside of the steering wheel (1), the image processing device obtains an image transmitted by the image acquisition device in a wireless manner, and the image acquisition device judges whether the driver is in a fatigue state according to the size of the eye opening, the frequency of blinking, the size of the mouth, and the frequency of yawning.The rim (2) is further provided with a reminder device, which has a second support ball (26). A second channel (27) and a second slide groove (28) are provided on both sides of the second support ball (26). The track support (13) is located in the second channel (27), and the slide rail (14) is located in the second slide groove (28). A second motor (29) is provided at the lower part of the second support ball (26). The second motor (29) is connected to a second gear (30). The second gear (30) is connected to the annular gear. The second support ball (26) is engaged with the strip (16), a cavity (31) is provided inside the second support ball (26), a cam (32) driven by a motor is provided inside the cavity (31), a track (33) is provided on the outer edge of the cam (32), an inner through hole (34) is provided on the second support ball (26), a thimble (35) is provided inside the inner through hole (34), one end of the thimble (35) is connected to a roller (48), the roller (48) is provided in the track (33), and the thimble (35) can pass through the inner through hole ( 34) and extends from the outer through hole (36) on the rim shell (8) to press the hand, a fixing ring (39) is provided inside the rim shell (8), a space corresponding to the outer through hole (36) is opened on the fixing ring (39), a slider (40) and a first spring (41) are provided inside the space, one end of the slider (40) extends from the space and is fixed with a blocking block (42), an opening (43) is provided on the blocking block (42), a second spring (44) is fixed inside the opening (43), and the first spring (41) is provided inside the first spring (41). The second spring (44) is fixed to the shielding head (45), the diameter of the shielding head (45) matches the diameter of the outer through hole (36), the fixing ring (39) is provided with an opening groove (47), the slider (40) is fixed with a shifting rod (46), the shifting rod (46) passes through the opening groove (47), the outer side of the second supporting ball (26) is rotatably provided with a disc (37), the second supporting ball (26) is provided with a second mounting groove (38), and a support member (20) is provided in the second mounting groove (38).

2. A driver fatigue detection and warning system according to claim 1, characterized in that: The steering wheel (1) is also provided with an alcohol measurement system (3).

3. A driver fatigue detection and warning system according to claim 2, characterized in that: The alcohol measurement system (3) has an installation cavity (301) opened on the steering wheel (1), the installation cavity (301) is cylindrical, and both ends are evenly externally conductive; a left baffle (302) and a right baffle (303) are fixed to the left and right ports of the installation cavity (301), respectively; a left fan (304) and a left motor (305) and a right fan (306) and a right motor (307) are respectively arranged on the inner sides of the left baffle (302) and the right baffle (303); and an alcohol detector (308) is fixed in the middle of the installation cavity (301).

4. A driver fatigue detection and warning system according to claim 3, characterized in that: The detection and warning system further comprises a wristband (6), which vibrates to remind the driver when the image processing device determines that the driver is in a fatigue state.

Images