Fatigue driving detection system based on FPGA multi-feature fusion

Abstract

The utility model discloses a fatigue driving detection system based on FPGA multi-feature fusion, and relates to the technical field of alarm devices, the fatigue driving detection system comprises a device main body, and also comprises a ball head rotatably arranged at the bottom of the device main body, and the bottom surface of the ball head is provided with a drawing groove; the vertical rod is inserted into the drawing groove in a sliding manner along the axial direction of the drawing groove; the supporting rods are rotationally arranged on the side face of the vertical rod, the number of the supporting rods is at least three, and the supporting rods are used for supporting the device body after being unfolded. The device main body is mounted on the instrument desk of the vehicle by adopting the angle-adjustable base, so that the sight of a driver is not influenced, and the driving safety is effectively ensured.

Description

Technical Field

[0001] The present application relates to the technical field of alarm devices, and in particular to a fatigue driving detection system based on FPGA multi-feature fusion. Background Art

[0002] Fatigue driving is a dangerous driving behavior. When a driver is in a fatigued state, his reaction speed to emergencies will be greatly reduced, resulting in the inability to deal with emergencies in a timely and correct manner, posing a serious threat to the life safety of the driver and other personnel.

[0003] The detection of fatigue driving requires the use of a series of technical means, which are mainly achieved through equipment on the vehicle. Since fatigue driving detection is not an essential function of the vehicle, many vehicles do not have this function. For drivers who need this function, this function will be added through after-sales installation. For example, patents such as CN214896888U and CN205582207U have proposed detection devices that can be installed in the vehicle cab. These devices detect whether the driver is driving fatigued by means of image acquisition and processing, and will generate a reminder message when it is determined that the driver is driving fatigued.

[0004] However, the detection devices proposed in the above patents all use suction cups to adhere to the windshield, which will inevitably affect the driver's line of sight and thus pose a threat to driving safety. Utility Model Content

[0005] The embodiment of the present application provides a fatigue driving detection system based on FPGA multi-feature fusion, which is used to solve the problem in the prior art that the detection device installed on the windshield affects the driver's vision.

[0006] The embodiment of the present application provides a fatigue driving detection system based on FPGA multi-feature fusion, including a device body, wherein the device body has an FPGA main control unit, and the FPGA main control unit uses multi-feature fusion technology to detect the fatigue state of the driver, and further includes:

[0007] The ball head is rotatably arranged at the bottom of the device body, and a drawing groove is arranged on the bottom surface of the ball head;

[0008] The vertical rod is inserted into the drawer slot by sliding along the axial direction of the drawer slot;

[0009] The support rods are rotatably arranged on the side of the vertical rod, and the number of the support rods is at least three. The support rods are used to support the device body after being opened.

[0010] In one possible implementation, a slip ring is provided on the outer side of the vertical pole along an axial sliding sleeve, and the end of the support rod is rotatably connected to the slip ring. A locking ring is also provided on the slip ring along a circumferential rotation. After the locking ring is rotated, it is locked on the vertical pole, thereby restricting the slip ring to a fixed position.

[0011] In one possible implementation, a slide groove extending in the axial direction is provided on the side surface of the vertical pole, and a plurality of slots are also provided on the side surface of the vertical pole. The plurality of slots are parallel to each other and distributed in the axial direction of the vertical pole, and one end of the slot is connected with the slide groove; an insert block is provided on the inner side surface of the locking ring, and the shape and size of the insert block match the slot. When the insert block is in the slide groove, the locking ring can slide in the axial direction on the vertical pole, and when the locking ring rotates and the insert block is inserted into the slot at the corresponding position, the locking ring is locked.

[0012] In a possible implementation, a receiving groove is provided on the inner side surface of the pull-out groove near the bottom of the ball head, the size of the receiving groove matches the locking ring, and the locking ring slides upward and is inserted into the receiving groove.

[0013] In a possible implementation, the bottom end of the vertical pole is rotatably connected to a pull rod, the number of the pull rod is the same as the supporting rod, and the ends of the pull rods are rotatably connected to the supporting rods in a one-to-one correspondence.

[0014] In a possible implementation, the width of the support rod is greater than that of the pull rod, and a groove matching the pull rod is provided on the side of the support rod connected to the pull rod. After the slip ring slides to the bottom end of the vertical rod, the pull rod is received in the groove.

[0015] In one possible implementation, the device body includes an installation box, a display screen, an infrared camera and an infrared light source are arranged on the side of the installation box, an FPGA main control unit is arranged inside the installation box, and the display screen and the infrared camera are electrically connected to the FPGA main control unit.

[0016] The fatigue driving detection system based on FPGA multi-feature fusion in this application has the following advantages:

[0017] The device body is installed on the vehicle's dashboard using an angle-adjustable base, which will not affect the driver's line of sight and effectively ensure driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1A schematic diagram of the structure of a fatigue driving detection system based on FPGA multi-feature fusion provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of the fatigue driving detection system based on FPGA multi-feature fusion in the open state provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the structure of the FPGA-based multi-feature fusion fatigue driving detection system in a folded state provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the structure of the upright pole and the locking ring provided in an embodiment of the present application.

[0023] Description of the accompanying drawings: 100, device body; 101, ball head; 102, pull-out slot; 103, storage slot; 110, display screen; 120, infrared camera; 130, infrared light source; 200, vertical pole; 201, slide groove; 202, slot; 210, support rod; 211, slip ring; 220, pull rod; 230, locking ring; 231, plug block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Figure 1-4 The present invention provides a structural diagram of a fatigue driving detection system based on FPGA multi-feature fusion provided in an embodiment of the present invention. The present invention provides a fatigue driving detection system based on FPGA multi-feature fusion, including a device body 100, wherein the device body 100 has an FPGA main control unit, and the FPGA main control unit uses multi-feature fusion technology to detect the fatigue state of the driver, and also includes:

[0026] The ball head 101 is rotatably arranged at the bottom of the device body 100, and a drawing groove 102 is arranged on the bottom surface of the ball head 101;

[0027] The vertical rod 200 is inserted into the drawing groove 102 by sliding along the axial direction of the drawing groove 102;

[0028] The support rod 210 is rotatably disposed on the side of the vertical rod 200 . There are at least three support rods 210 . The support rods 210 are used to support the device body 100 when opened.

[0029] For example, the specific method by which the FPGA main control unit uses multi-feature fusion technology to detect the driver's fatigue state can be referred to CN112183482A, and this application will not repeat it again.

[0030] The device body 100 includes an installation box, on the side of which a display screen 110, an infrared camera 120 and an infrared light source 130 are arranged, and inside the installation box an FPGA main control unit is arranged, and the display screen 110 and the infrared camera 120 are both electrically connected to the FPGA main control unit.

[0031] A speaker may also be provided inside the installation box, and the speaker is electrically connected to the FPGA main control unit so that the reminder sound generated by the speaker can be transmitted to the driver. In an embodiment of the present application, the FPGA main control unit is provided on a circuit board, and the display screen 110, the infrared camera 120, and the speaker are all electrically connected to the circuit board. After the FPGA main control unit receives the infrared image containing the driver's facial information collected by the infrared camera 120, it identifies the driver's state. When it is determined that there is a situation of fatigue driving, a reminder message can be issued simultaneously through the display screen 110 and the speaker, and the infrared light source 130 is used to project infrared light to the driver's face, thereby improving the quality of the image collected by the infrared camera 120.

[0032] Furthermore, a battery may be provided inside the installation box, or the power input terminal of the circuit board may be connected to a power cord, which may be plugged into a power interface inside the vehicle to supply power to electronic devices inside the device body 100 .

[0033] The ball head 101 in the present application is in a shape larger than a hemisphere, and its bottom is a plane, and the pull-out groove 102 extends from the plane to the inside of the ball head 101. The vertical rod 200 is kept relatively stable by friction and the pull-out groove 102, and the vertical rod 200 can be pulled out to a suitable length as needed during use. At the same time, since the vertical rod 200 is inserted into the ball head 101, the relative angle between the vertical rod 200 and the device body 100 can also be adjusted, so that when the entire device is placed on the dashboard of the vehicle, it can ensure that the infrared camera 120 can face the driver's face.

[0034] In a possible embodiment, a slip ring 211 is provided on the outer surface of the vertical pole 200 along an axial sliding sleeve, and the end of the support rod 210 is rotatably connected to the slip ring 211. A locking ring 230 is also circumferentially rotatably provided on the slip ring 211. After the locking ring 230 is rotated, it is locked on the vertical pole 200, thereby limiting the slip ring 211 to a fixed position.

[0035] Exemplarily, a slide groove 201 extending along the axial direction is provided on the side of the vertical rod 200, and a plurality of slots 202 are also provided on the side of the vertical rod 200. The plurality of slots 202 are parallel to each other and distributed along the axial direction of the vertical rod 200, and one end of the slot 202 is connected with the slide groove 201; an insert block 231 is provided on the inner side surface of the locking ring 230, and the shape and size of the insert block 231 match the slot 202. When the insert block 231 is in the slide groove 201, the locking ring 230 can slide axially on the vertical rod 200. When the locking ring 230 rotates and the insert block 231 is inserted into the slot 202 at the corresponding position, the locking ring 230 is locked.

[0036] After adopting the sliding installation method, the degree of expansion of the support rod 210 can be adjusted according to the shape of the placement position on the instrument panel, which can be achieved by sliding the sliding ring 211 upward or downward. When the sliding ring 211 is slid upward, the support rods 210 will move closer to each other, thereby reducing the degree of expansion, which is suitable for areas with small space on the instrument panel. When the sliding ring 211 is slid downward, the support rods 210 will move away from each other, thereby increasing the degree of expansion, which is suitable for larger areas on the instrument panel. Furthermore, when the sliding ring 211 slides downward to the bottom, the support rod 210 will be fully expanded into a plane. At this time, the expanded area is the largest, so it has the best stability, and the support rod 210 can also be rotated to this state when the device is folded.

[0037] Furthermore, the drawer slot 102 is provided with a receiving slot 103 on the inner side surface near the bottom of the ball head 101. The size of the receiving slot 103 matches the locking ring 230. The locking ring 230 slides upward and is inserted into the receiving slot 103. When the device needs to be folded up, the support rod 210 can be first unfolded to the maximum, and then the vertical rod 200 is inserted into the drawer slot 102. When it is inserted to the bottom, the locking ring 230 will be completely received in the receiving slot 103. At this time, the top surface of the support rod 210 unfolded into a plane will be close to the bottom surface of the installation box, and the device will be in a state of occupying the minimum space.

[0038] In a possible embodiment, the bottom end of the vertical pole 200 is rotatably connected to a pull rod 220 , the number of the pull rods 220 is the same as the supporting rods 210 , and the ends of the pull rods 220 are rotatably connected to the supporting rods 210 in a one-to-one correspondence.

[0039] Exemplarily, a triangle is formed between the support rod 210 , the pull rod 220 and the vertical rod 200 , so that the three are at a fixed angle after the locking ring 230 is locked, thereby providing stable support for the device body 100 .

[0040] Furthermore, the width of the support rod 210 is greater than the width of the pull rod 220, and the support rod 210 is provided with a groove matching the pull rod 220 on the side connected to the pull rod 220, and the pull rod 220 is received in the groove after the slip ring 211 slides to the bottom end of the vertical rod 200. After the groove is provided, the support rod 210 and the pull rod 220 can be rotated to a completely parallel state, and then the pull rod 220 can be received in the groove, thereby reducing the volume of the device as much as possible.

[0041] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A fatigue driving detection system based on FPGA multi-feature fusion, comprising a device body (100), wherein the device body (100) has an FPGA main control unit, and the FPGA main control unit uses multi-feature fusion technology to detect the fatigue state of the driver, characterized in that: Also includes: A ball head (101) is rotatably arranged at the bottom of the device body (100), and a drawing groove (102) is arranged on the bottom surface of the ball head (101); A vertical rod (200) is inserted into the drawer groove (102) by sliding along the axial direction of the drawer groove (102); A support rod (210) is rotatably arranged on the side of the vertical rod (200), the number of the support rods (210) is at least three, and the support rods (210) are used to support the device body (100) after being opened.

2. The fatigue driving detection system based on FPGA multi-feature fusion according to claim 1 is characterized in that: A slip ring (211) is provided on the outer surface of the vertical rod (200) along an axial sliding sleeve, and the end of the support rod (210) is rotatably connected to the slip ring (211). A locking ring (230) is also rotatably provided on the slip ring (211), and the locking ring (230) is locked on the vertical rod (200) after rotation, thereby limiting the slip ring (211) to a fixed position.

3. The fatigue driving detection system based on FPGA multi-feature fusion according to claim 2 is characterized in that: A slide groove (201) extending in the axial direction is arranged on the side surface of the vertical rod (200), and a plurality of slots (202) are also arranged on the side surface of the vertical rod (200). The plurality of slots (202) are parallel to each other and distributed in the axial direction of the vertical rod (200), and one end of the slot (202) is connected to the slide groove (201); An insert block (231) is provided on the inner side surface of the locking ring (230), and the shape and size of the insert block (231) match the slot (202). When the insert block (231) is in the slide groove (201), the locking ring (230) can slide axially on the vertical rod (200). When the locking ring (230) rotates and the insert block (231) is inserted into the slot (202) at the corresponding position, the locking ring (230) is locked.

4. The fatigue driving detection system based on FPGA multi-feature fusion according to claim 2 is characterized in that: The pull-out groove (102) is provided with a receiving groove (103) on the inner side surface close to the bottom of the ball head (101); the size of the receiving groove (103) matches the locking ring (230); the locking ring (230) is inserted into the receiving groove (103) after sliding upward.

5. The fatigue driving detection system based on FPGA multi-feature fusion according to claim 2 is characterized in that: The bottom end of the vertical rod (200) is rotatably connected to a pull rod (220), the number of the pull rods (220) is the same as the support rods (210), and the ends of the pull rods (220) are rotatably connected to the support rods (210) in a one-to-one correspondence.

6. The fatigue driving detection system based on FPGA multi-feature fusion according to claim 5 is characterized in that: The width of the support rod (210) is greater than the width of the pull rod (220), and the support rod (210) is provided with a groove matching the pull rod (220) on the side connected to the pull rod (220), and the pull rod (220) is received in the groove after the slip ring (211) slides to the bottom end of the vertical rod (200).

7. The fatigue driving detection system based on FPGA multi-feature fusion according to claim 1 is characterized in that: The device body (100) comprises an installation box, a display screen (110), an infrared camera (120) and an infrared light source (130) are arranged on the side of the installation box, the FPGA main control unit is arranged inside the installation box, and the display screen (110) and the infrared camera (120) are both electrically connected to the FPGA main control unit.

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