Vehicle-mounted face recognition fatigue monitoring device based on images

Abstract

The utility model discloses a vehicle-mounted face recognition fatigue monitoring device based on images, which comprises a suspension frame and a top beam mounting frame mounted on the cambered surface wall of the top end of the suspension frame, two symmetrical shaft seats are integrally formed at the bottom end of the suspension frame, a main shaft is rotatably mounted between the two shaft seats, and the main shaft is connected with a motor. The two ends of the main shaft penetrate to the exterior of the shaft seat and are fixedly provided with swing arms, the bottom ends of the two swing arms are inlaid with face recognition cameras used for collecting face information of a user, the bottom end of the suspension frame is sequentially provided with a first upper concave cavity and a second upper concave cavity upwards, and a vertical shaft is rotationally installed on the top wall of the first upper concave cavity; a bevel gear transmission structure used for power connection is arranged between the vertical shaft and the main shaft. According to the utility model, the camera can be hidden when a user selects to close the fatigue monitoring function, so that privacy worry possibly caused by continuously exposing the monitoring probe is avoided, and therefore, the user can drive a vehicle more trustingly when fatigue monitoring is not needed, and does not worry that personal privacy is invaded.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted camera, in particular to an image-based vehicle-mounted face recognition fatigue monitoring device. Background Art

[0002] Image-based vehicle-mounted face recognition fatigue monitoring devices play an important role in modern automobile safety technology, monitoring the driver's fatigue state to prevent traffic accidents and ensure the safety of drivers and passengers. This device uses advanced artificial intelligence and computer vision technology to analyze the driver's facial expressions and eye activities to detect signs of fatigue, such as closing eyes, frequent blinking, yawning, etc., so as to promptly remind the driver to take measures and stay alert. The structure of this type of device is generally composed of multiple components, including cameras, image processing units, face recognition algorithms, data analysis modules and warning devices, etc. Among them, the camera is usually installed inside the car, and the viewing angle covers the driver's facial area. The camera is responsible for capturing the driver's facial image in real time, while the image processing unit receives the image data transmitted by the camera and performs preprocessing, including denoising, contrast enhancement, etc., to improve the accuracy of the subsequent face recognition algorithm. The face recognition algorithm uses deep learning and other technologies to extract and identify the driver's facial features to determine the driver's identity and monitor his fatigue state;

[0003] For example, an image-based face recognition and fatigue monitoring device disclosed in the authorization announcement number CN211015695U includes a mounting base arranged in a gantry crane cab and on the top of the gantry crane cab, a connecting component is arranged at the bottom of the mounting base, a base is installed at the bottom of the connecting component, and an adjustment component is arranged at the bottom of the base, the monitoring component includes a horizontal adjustment component installed at the bottom of the base for adjusting the horizontal angle and a height adjustment component installed at the bottom of the horizontal adjustment component for adjusting the vertical height. The monitoring probe is installed by horizontal insertion, and the direction of horizontal displacement is limited by a limit plate, so that there is no risk of the monitoring probe being detached from the connection. However, during use, the monitoring probe of this technical solution is always in an exposed state, that is, directly facing the user's face. When the user does not need to perform fatigue driving detection, the monitoring probe is always suspended diagonally in front of the user. When the driver realizes that his face is being monitored, he is likely to feel uneasy or uncomfortable. Even if this monitoring is for safety purposes, it is easy to be considered to infringe on personal privacy. Utility Model Content

[0004] The purpose of the utility model is to provide an image-based vehicle-mounted face recognition fatigue monitoring device, which connects the motor controller to the vehicle's BCM (body control module). When the user chooses to turn on the fatigue monitoring function, the motor controller controls the action of the pulley drive unit, thereby driving the swing arm and the face recognition camera to swing, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an image-based vehicle-mounted face recognition fatigue monitoring device, comprising a suspension and a top beam mounting frame installed on the curved wall at the top of the suspension, the bottom end of the suspension is integrally formed with two symmetrical shaft seats, a main shaft is rotatably installed between the two shaft seats, both ends of the main shaft penetrate to the outside of the shaft seat and are fixed with swing arms, and the bottom ends of the two swing arms are inlaid with facial recognition cameras for collecting user facial information, the bottom end of the suspension is sequentially upwardly provided with a first upper concave cavity and a second upper concave cavity, a vertical shaft is rotatably installed on the top wall of the first upper concave cavity, a bevel gear transmission structure for power connection is arranged between the vertical shaft and the main shaft, a transmission shaft is rotatably installed on the inner wall of one side of the first upper concave cavity, a worm gear transmission structure is arranged between the transmission shaft and the vertical shaft, a pulley drive unit for driving the transmission shaft to rotate is installed inside the second upper concave cavity, a motor controller is installed on the inner wall of the other side of the first upper concave cavity, and the output end of the motor controller is electrically connected to the input end of the pulley drive unit.

[0006] Preferably, the top beam mounting frame comprises two symmetrical triangular arms fixed on the curved wall at the top end of the suspension frame, and a connecting plate with a plurality of through holes is fixed to the top ends of the two triangular arms.

[0007] Preferably, a flat plate is integrally formed on the outer wall on one side opposite to the two triangular arms, and the triangular arms, connecting plates and flat plates are all made of galvanized steel.

[0008] Preferably, the pulley driving unit includes a servo motor installed on one side of the interior of the second upper cavity, and a crawler transmission structure installed on the output end of the servo motor for driving the transmission shaft to rotate.

[0009] Preferably, the bevel gear transmission structure includes a driven bevel gear fixed to one end of the main shaft surface, and a driving bevel gear fixed to the bottom end of the vertical shaft, and the driving bevel gear and the driven bevel gear are meshed with each other.

[0010] Preferably, the worm gear transmission structure includes a worm mounted on one end of the transmission shaft surface and a worm wheel fixed on one end of the vertical shaft surface, the worm wheel and the worm are meshed with each other, and the worm wheel is located above the active bevel gear.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the image-based vehicle-mounted face recognition fatigue monitoring device is provided with structures that cooperate with each other, such as a swing arm and a suspension, and by controlling the swing of the facial recognition camera, the camera can be hidden when the user chooses to turn off the fatigue monitoring function, thereby avoiding the privacy concerns that may be caused by the continuous exposure of the monitoring probe. In this way, the user can drive the vehicle more confidently when fatigue monitoring is not needed, without worrying about the infringement of personal privacy, and by controlling the movement of the swing arm, the position and angle of the camera can be flexibly adjusted to adapt to different driving environments and vehicle structures, thereby improving the monitoring effect and coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 3 It is a side view structural schematic diagram of the utility model;

[0015] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the suspension of the utility model;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the suspension of the utility model;

[0017] In the figure: 1. suspension; 101. axle seat; 102. first upper concave cavity; 103. second upper concave cavity; 2. top beam mounting frame; 201. triangular arm; 202. connecting plate; 203. flat plate; 3. main shaft; 4. swing arm; 5. facial recognition camera; 6. motor controller; 7. transmission shaft; 8. pulley drive unit; 9. vertical shaft; 10. bevel gear transmission structure; 11. worm gear transmission structure. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5The utility model provides an embodiment: an image-based vehicle-mounted face recognition fatigue monitoring device, comprising a suspension 1 and a top beam mounting frame 2 installed on the top curved wall of the suspension 1, the bottom end of the suspension 1 is integrally formed with two symmetrical axle seats 101, a main shaft 3 is rotatably installed between the two axle seats 101, both ends of the main shaft 3 pass through the outside of the axle seat 101 and are fixed with swing arms 4, the bottom ends of the two swing arms 4 are inlaid with facial recognition cameras 5 for collecting user facial information, the bottom end of the suspension 1 is sequentially upwardly provided with a first upper concave cavity 102 and a second upper concave cavity 103, the first upper concave cavity 102 A vertical shaft 9 is rotatably mounted on the top wall, a bevel gear transmission structure 10 for power connection is arranged between the vertical shaft 9 and the main shaft 3, a transmission shaft 7 is rotatably mounted on the inner wall of one side of the first upper concave cavity 102, a worm gear transmission structure 11 is arranged between the transmission shaft 7 and the vertical shaft 9, a pulley drive unit 8 for driving the transmission shaft 7 to rotate is installed inside the second upper concave cavity 103, a motor controller 6 is installed on the inner wall of the other side of the first upper concave cavity 102, the output end of the motor controller 6 is electrically connected to the input end of the pulley drive unit 8, and the motor controller 6 is connected to the BCM of the vehicle through a signal line;

[0020] The top beam mounting frame 2 includes two symmetrical triangular arms 201 fixed on the top curved wall of the suspension 1. A connecting plate 202 with a plurality of through holes is fixed on the top of the two triangular arms 201. A flat plate 203 is integrally formed on the outer wall of the opposite side of the two triangular arms 201. The triangular arms 201, the connecting plate 202, and the flat plate 203 are all made of galvanized steel. The galvanized steel has good corrosion resistance and can resist the corrosion of water, oxygen and other chemicals in the environment to the metal. During the use of the vehicle, it may encounter humid and rainy environments, and the galvanized steel material can effectively protect the components from corrosion and extend their service life;

[0021] The top ends of the two triangular arms 201 are fixed with a connecting plate 202, and the connecting plate 202 can be pre-bolted to the top wall of the vehicle frame, thereby completing the pre-setting operation of the component;

[0022] The pulley drive unit 8 includes a servo motor installed on one side of the second upper concave cavity 103, and a crawler drive structure installed at the output end of the servo motor for driving the transmission shaft 7 to rotate. The pulley drive unit 8 adopts the structural form of the servo motor and the crawler drive structure. Since the facial recognition camera 5 needs to shoot at a specific angle and position, the servo motor and the crawler drive structure can flexibly adjust the position and angle of the camera by controlling the swing amplitude of the swing arm 4 to adapt to different driving users and vehicle structures, thereby improving the monitoring effect, coverage and recognition accuracy of the camera;

[0023] The bevel gear transmission structure 10 includes a driven bevel gear fixed to one end of the surface of the main shaft 3, and an active bevel gear fixed to the bottom end of the vertical shaft 9. The active bevel gear and the driven bevel gear are meshed with each other. The worm gear transmission structure 11 includes a worm mounted on one end of the surface of the transmission shaft 7, and a worm wheel fixed to one end of the surface of the vertical shaft 9. The worm wheel and the worm are meshed with each other. The worm wheel is located above the active bevel gear. The rotary power of the pulley drive unit 8 is transmitted to the vertical shaft 9 through the transmission shaft 7 and the worm gear transmission structure 11. Then, the vertical shaft 9 drives the main shaft 3 to rotate through the bevel gear transmission structure 10. In this process, the worm gear transmission structure 11 has a high transmission efficiency and a self-locking function.

[0024] During vehicle driving, even in the case of vibration or uneven road conditions, the worm gear transmission structure 11 can maintain stable movement of the swing arm 4. This stability can ensure that the camera can be accurately swung to a predetermined position and can ensure that the camera remains stationary in a hidden or displayed position, thereby ensuring the accuracy and reliability of face recognition.

[0025] When the embodiment of the present application is used, the suspension 1 is first bolted and pre-set in the vehicle ceiling through the top beam mounting frame 2, and the motor controller 6 is connected to the vehicle's BCM through a signal line. When the user chooses to turn on the fatigue monitoring function in the vehicle function options, the electrical signal is sent to the BCM, and the BCM controls the motor controller 6 to work, so that the motor controller 6 drives the pulley drive unit 8 to move, and the rotary power of the pulley drive unit 8 is converted into the rotation of the main shaft 3 through the transmission shaft 7, the vertical shaft 9, the worm gear transmission structure 11 and other components, and the main shaft 3 drives the two swing arms 4 to swing synchronously. Because the facial recognition camera 5 is embedded in the two swing arms 4, the swing arms 4 can drive the facial recognition camera 5 to flip. When the swing arms 4 flip vertically downward with the main axis 3 as the central axis, the lens of the facial recognition camera 5 can face the user's face and collect the user's facial information. When the user chooses to turn off the fatigue monitoring function, the pulley drive unit 8 moves in the opposite direction, and hides the camera by controlling the swing arms 4 and the facial recognition camera 5 to avoid the privacy concerns that may be caused by the continuous exposure of the monitoring probe. When fatigue monitoring is not needed, you can drive the vehicle more confidently without worrying about the infringement of your personal privacy.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An image-based vehicle-mounted face recognition fatigue monitoring device, characterized in that: The invention comprises a suspension (1) and a top beam mounting frame (2) mounted on the top curved wall of the suspension (1); the bottom end of the suspension (1) is integrally formed with two symmetrical shaft seats (101); a main shaft (3) is rotatably mounted between the two shaft seats (101); both ends of the main shaft (3) penetrate the outside of the shaft seats (101) and are fixed with swing arms (4); the bottom ends of the two swing arms (4) are inlaid with facial recognition cameras (5) for collecting user facial information; the bottom end of the suspension (1) is sequentially provided with a first upper concave cavity (102) and a second upper concave cavity (103); the top wall of the first upper concave cavity (102) is rotatably mounted between the two shaft seats (101); A vertical shaft (9) is rotatably mounted on the first upper concave cavity (102); a bevel gear transmission structure (10) for power connection is arranged between the vertical shaft (9) and the main shaft (3); a transmission shaft (7) is rotatably mounted on the inner wall of one side of the first upper concave cavity (102); a worm gear transmission structure (11) is arranged between the transmission shaft (7) and the vertical shaft (9); a pulley drive unit (8) for driving the transmission shaft (7) to rotate is installed inside the second upper concave cavity (103); a motor controller (6) is installed on the inner wall of the other side of the first upper concave cavity (102); and the output end of the motor controller (6) is electrically connected to the input end of the pulley drive unit (8).

2. The image-based vehicle-mounted face recognition fatigue monitoring device according to claim 1, characterized in that: The top beam mounting frame (2) comprises two symmetrical triangular arms (201) fixed on the top curved wall of the suspension frame (1), and a connecting plate (202) with a plurality of through holes is fixed on the top of the two triangular arms (201).

3. The vehicle-mounted face recognition fatigue monitoring device based on image according to claim 2 is characterized in that: A flat plate (203) is integrally formed on the outer wall of one side opposite to the two triangular arms (201), and the triangular arms (201), the connecting plate (202) and the flat plate (203) are all made of galvanized steel.

4. The vehicle-mounted face recognition fatigue monitoring device based on image according to claim 1 is characterized in that: The pulley drive unit (8) comprises a servo motor installed on one side of the interior of the second upper concave cavity (103), and a crawler drive structure installed at the output end of the servo motor and used for driving the transmission shaft (7) to rotate.

5. The vehicle-mounted face recognition fatigue monitoring device based on image according to claim 1 is characterized in that: The bevel gear transmission structure (10) comprises a driven bevel gear fixed to one end of the surface of the main shaft (3), and a driving bevel gear fixed to the bottom end of the vertical shaft (9), and the driving bevel gear and the driven bevel gear are meshed with each other.

6. The image-based vehicle-mounted face recognition fatigue monitoring device according to claim 5, characterized in that: The worm gear transmission structure (11) comprises a worm mounted on one end of the surface of the transmission shaft (7) and a worm wheel fixed on one end of the surface of the vertical shaft (9); the worm wheel and the worm are meshed with each other, and the worm wheel is located above the active bevel gear.

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