Driver Monitoring System

Abstract

The present application discloses a driver monitoring system, which belongs to the field of automobile technology. The present application discloses a driver monitoring system, including: a camera module, a controller and a circuit board, wherein the camera module is used to collect driver information; the controller is used to receive the driver information collected by the camera module; the circuit board includes a first connecting section, a second connecting section and a curved transition section, wherein the first connecting section is extended and formed along a first direction, and the camera module is mounted on the first connecting section; the curved transition section is bent and formed from the light-incoming side of the first connecting section away from the camera module; the second connecting section is connected to a side of the curved transition section away from the first connecting section, and the second connecting section is extended and formed along a second direction, and the controller is mounted on the second connecting section, and the second direction intersects with the first direction. The driver monitoring system disclosed in the present application reduces the wiring between the camera module and the controller by adopting an integrated design in which both the camera module and the controller are mounted on the circuit board, thereby simplifying the installation process.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and more particularly to a driver monitoring system. Background Art

[0002] The driver monitoring system (DMS) is used to monitor the driver's condition in order to detect distraction, fatigue, or drowsiness, as well as other situations where the driver is unable to drive. With the increasing intelligence of automobiles and the increasing attention paid to active safety systems, the application of DMS has become more popular. Traditional DMS systems are generally divided into two parts, namely the DMS camera and the DMS controller. The camera is responsible for collecting video information and transmitting it to the controller. The controller makes algorithm decisions and issues corresponding instructions to the actuator.

[0003] The original DMS camera is generally arranged on the A-pillar or steering column. Due to the limited space of the A-pillar and steering column, the controller can only be arranged in other positions. The two are then connected by a wiring harness, which makes the DMS system occupy a large space in the vehicle, the wiring is complex and the layout is difficult. Summary of the invention

[0004] The embodiment of the present application provides a driver monitoring system, which integrates the camera module and the controller into an integrated design, thereby reducing the difficulty of deploying the driver monitoring system.

[0005] An embodiment of the present application provides a driver monitoring system, including: a camera module, a controller and a circuit board, the camera module is used to collect driver information; the controller is used to receive the driver information collected by the camera module; the circuit board includes a first connecting section, a second connecting section and a curved transition section, the first connecting section is extended and formed along a first direction, and the camera module is mounted on the first connecting section; the curved transition section is bent and formed from the light-incoming side of the first connecting section away from the camera module; the second connecting section is connected to a side of the curved transition section away from the first connecting section, the second connecting section is extended and formed along a second direction, the controller is mounted on the second connecting section, and the second direction intersects with the first direction.

[0006] According to the implementation scheme of the first aspect of the present application, it also includes an upper shell, the upper shell includes a first supporting part and a second supporting part, the first supporting part is used to support the first connecting section, the first supporting part and the camera module are respectively located on both sides of the first connecting section, and the second supporting part is used to support the second connecting section.

[0007] According to the implementation of the first aspect of the present application, it also includes a light source mounted on the first connecting section,

[0008] The light source and the first support part are respectively located on both sides of the first connecting section, and the light source emits light toward the light-incoming side of the camera module; the upper shell also includes a heat dissipation part, which is located on the side of the first support part away from the first connecting section, and the orthographic projection of the heat dissipation part on the first support part at least partially overlaps with the orthographic projection of the light source on the first support part.

[0009] According to the implementation scheme of the first aspect of the present application, the heat dissipation portion includes at least one heat dissipation rib, multiple heat dissipation ribs extend along a third direction, and the heat dissipation ribs are connected between the first support portion and the second support portion, and the third direction intersects with both the first direction and the second direction.

[0010] According to an implementation of the first aspect of the present application, the upper shell further comprises a boss portion, which protrudes from the first support portion toward the first connecting section, and the orthographic projection of the boss portion on the first support portion at least partially overlaps with the orthographic projection of the light source on the first support portion.

[0011] According to the implementation of the first aspect of the present application, a heat-conducting glue is provided between the boss portion and the first connecting section.

[0012] According to the implementation scheme of the first aspect of the present application, a heat insulation groove penetrating the first connecting section is provided on the first connecting section, and the light source and the camera module are respectively located on both sides of the heat insulation groove.

[0013] According to the implementation of the first aspect of the present application, it also includes a support seat, the support seat and the first support

[0014] The first supporting portion is connected to the support seat, and a first accommodating cavity is formed between the support seat and the first supporting portion, and at least part of the first connecting section 0 is located in the first accommodating cavity.

[0015] According to an implementation of the first aspect of the present application, a through hole extending along the second direction is provided on the support base, and a projection of the camera module on the first connecting segment at least partially overlaps with a projection of the through hole on the first connecting segment.

[0016] According to the implementation scheme of the first aspect of the present application, a positioning 5 structure is provided between the support seat and the first support portion, and the positioning structure includes at least one positioning protrusion and a positioning groove matching the positioning protrusion, and one of the positioning protrusion and the positioning groove is provided on the support seat, and the other is provided on the first support portion.

[0017] According to the implementation scheme of the first aspect of the present application, it also includes a light shield, which is connected to the support base. The light shield and the first support part are respectively located on both sides of the support base. A second accommodating cavity is formed between the light shield and the support base, and the light input side of the camera module is located in the second accommodating cavity.

[0018] According to the implementation scheme of the first aspect of the present application, the light shield is connected to the support seat through a snap-fit ​​structure, which includes at least one limit block and a slot matching the limit block, one of the limit block and the slot is arranged on the support seat, and the other is arranged on the light shield.

[0019] According to the implementation of the first aspect of the present application, it also includes a lower shell, which is connected to the second support part, and a third accommodating cavity is formed between the upper shell and the second support part, and at least part of the second connecting section is located in the third accommodating cavity.

[0020] According to an implementation of the first aspect of the present application, the lower shell and the second supporting part are made of metal.

[0021] According to the implementation of the first aspect of the present application, the camera module includes: a sensor, the sensor is mounted on the first connecting section; a lens, connected to the side of the sensor away from the first connecting section, and the lens is extended along the second direction.

[0022] According to an implementation of the first aspect of the present application, the camera module further includes a sealing ring, which is located between the lens and the sensor.

[0023] According to the implementation of the first aspect of the present application, the circuit board includes a rigid circuit board and a flexible circuit board, the first connecting section and the second connecting section are rigid circuit boards, and the curved transition section is a flexible circuit board.

[0024] According to an implementation of the first aspect of the present application, the first direction is perpendicular to the second direction, or the angle between the first direction and the second direction is between 70 degrees and 110 degrees.

[0025] The driver monitoring system of the embodiment of the present application includes a camera module, a controller and a circuit board, the camera module is used to collect driver information, the controller is used to receive the driver information collected by the camera module, the circuit board includes a first connecting section, a second connecting section and a curved transition section, the first connecting section is extended and formed along a first direction, the camera module is mounted on the first connecting section, the second connecting section is extended and formed along a second direction, the controller is mounted on the second connecting section, the curved transition section is bent and formed from the light-incoming side of the first connecting section away from the camera module, and the second connecting section is connected to a side of the curved transition section away from the first connecting section; by adopting an integrated design in which the camera module and the controller are both mounted on the circuit board, the wiring between the camera module and the controller is reduced, thereby simplifying the installation process; by bending the curved transition section approximately 90 degrees, the second connecting section for carrying the controller can extend in a direction away from the light-incoming side of the camera module, and when the driver monitoring system is arranged on the A-pillar or steering column of the car, the curved transition section allows the second connecting section to be accommodated in a cavity inside the A-pillar or steering column, thereby reducing the difficulty of arranging the driver monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 A schematic diagram of the structure of a driver monitoring system according to some embodiments of the present application;

[0028] Figure 2 An example is shown Figure 1 Schematic diagram of the decomposition structure of the driver monitoring system;

[0029] Figure 3 An example is shown Figure 2 A schematic diagram of the structure of the sensor, controller, circuit board and light source;

[0030] Figure 4 An example is shown Figure 2 A schematic diagram of the structure of the upper shell and the positioning protrusion;

[0031] Figure 5 An example is shown Figure 2 A schematic diagram of the structure of the upper shell and the positioning protrusion in another viewing angle;

[0032] Figure 6 An example is shown Figure 2 A schematic diagram of the structure of the support seat, positioning groove and limit block;

[0033] Figure 7 An example is shown Figure 2 Schematic diagram of the structure of the lens hood and the card slot.

[0034] Reference numerals:

[0035] 10. Camera module; 11. Sensor; 12. Lens; 13. Sealing ring;

[0036] 20. Controller; 21. External main connector;

[0037] 30. Circuit board; 31. First connecting section; 311. Heat insulation groove; 32. Second connecting section; 33. Curved transition section;

[0038] 40. upper shell; 41. first support portion; 411. positioning protrusion; 42. second support portion; 421. positioning column; 43. heat dissipation portion; 431. heat dissipation rib; 44. boss portion;

[0039] 50. Light source;

[0040] 60. Support seat; 61. Positioning groove; 62. Limit block;

[0041] 70. Light hood; 71. Card slot;

[0042] 80, lower housing;

[0043] x, first direction; y, second direction; z, third direction. DETAILED DESCRIPTION

[0044] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0046] The applicant found that in the prior art, the camera module and controller in the driver monitoring system adopt a split design, and the camera module and the controller are connected by a wiring harness, which makes the DMS system occupy a large space in the vehicle, the wiring is complex and the layout is difficult.

[0047] In view of the above problems, the applicant proposes a driver monitoring system, including a camera module, a controller and a circuit board, the camera module is used to collect driver information; the controller is used to receive the driver information collected by the camera module; the circuit board includes a first connecting section, a second connecting section and a curved transition section, the first connecting section is extended along a first direction, and the camera module is mounted on the first connecting section; the curved transition section is bent from the first connecting section to the light-incoming side of the camera module away from the first connecting section; the second connecting section is connected to a side of the curved transition section away from the first connecting section, the second connecting section is extended along a second direction, the controller is mounted on the second connecting section, and the second direction intersects with the first direction.

[0048] The driver monitoring system provided by the present application includes a camera module, a controller and a circuit board. The camera module is used to collect driver information, and the controller is used to receive the driver information collected by the camera module. The circuit board includes a first connecting section, a second connecting section and a curved transition section. The first connecting section is extended and formed along a first direction, the camera module is mounted on the first connecting section, the second connecting section is extended and formed along a second direction, the controller is mounted on the second connecting section, the curved transition section is bent and formed from the light-incoming side of the first connecting section away from the camera module, and the second connecting section is connected to a side of the curved transition section away from the first connecting section. By adopting an integrated design in which the camera module and the controller are both mounted on the circuit board, the wiring between the camera module and the controller is reduced, thereby simplifying the installation process. By bending the curved transition section approximately 90 degrees, the second connecting section for carrying the controller can extend in a direction away from the light-incoming side of the camera module. When the driver monitoring system is arranged on the A-pillar or steering wheel column of the car, the curved transition section allows the second connecting section to be accommodated in a cavity inside the A-pillar or steering wheel column, thereby reducing the difficulty of arranging the driver monitoring system.

[0049] The display module provided by the embodiment of the present application is introduced below in conjunction with the accompanying drawings. It is noted that the x direction in the accompanying drawings is the first direction, the y direction in the accompanying drawings is the second direction, and the z direction in the accompanying drawings is the third direction. In the accompanying drawings, for the convenience of drawing, the dimensions in the drawings are not necessarily proportional to the actual dimensions.

[0050] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of the structure of a driver monitoring system according to some embodiments of the present application; Figure 2 An example is shown Figure 1 Schematic diagram of the decomposition structure of the driver monitoring system;

[0051] Figure 3 An example is shown Figure 2 Schematic diagram of the structure of the sensor, controller, circuit board and light source.

[0052] like Figures 1 to 3As shown, the present application provides a driver monitoring system, including a camera module 10, a controller 20 and a circuit board 30. The camera module 10 is used to collect driver information; the controller 20 is used to receive the driver information collected by the camera module 10. The circuit board 30 includes a first connecting section 31, a second connecting section 32 and a curved transition section 33. The first connecting section 31 is extended along a first direction (the x direction in the figure), and the camera module 10 is mounted on the first connecting section 31. The curved transition section 33 is bent from the light-incoming side of the first connecting section 31 away from the camera module 10. The second connecting section 32 is connected to a side of the curved transition section 33 away from the first connecting section 31, and the second connecting section 32 is extended along a second direction (the y direction in the figure). The controller 20 is mounted on the second connecting section 32, and the second direction y intersects with the first direction x.

[0053] Optionally, the first direction x is perpendicular to the second direction y, or the angle between the first direction x and the second direction y is between 70 and 110 degrees, and the angle between the first connecting section 31 and the second connecting section 32 is approximately 90 degrees. The circuit board 30 is a PCBA (Printed Circuit Board Assembly, a printed circuit board after surface mounting or dual in-line packaging). The controller 20 includes but is not limited to an image processing chip, an MCU (Microcontroller Unit, microprocessor chip) and a hardware driver. The driver image information collected by the camera module 10 is transmitted to the controller 20, and the controller 20 determines the driver's state through a built-in algorithm and issues corresponding instructions to other actuators on the car.

[0054] Optionally, the driver monitoring system also includes an external main connector 21 mounted on the second connecting section 32, the external main connector 21 is electrically and communicatively connected to the controller 20 via the second connecting section 32, and the external main connector is used to connect to other actuators on the vehicle.

[0055] The driver monitoring system provided in this embodiment includes a camera module 10, a controller 20 and a circuit board 30. The camera module 10 is used to collect driver information, and the controller 20 is used to receive and process the driver information collected by the camera module 10. The circuit board 30 includes a first connecting section 31, a second connecting section 32 and a curved transition section 33. The first connecting section 31 is extended along a first direction x, the camera module 10 is mounted on the first connecting section 31, the second connecting section 32 is extended along a second direction y, the controller 20 is mounted on the second connecting section 32, the curved transition section 33 is bent from the light-incoming side of the first connecting section 31 away from the camera module 10, and the second connecting section 32 is connected to a side of the curved transition section 33 away from the first connecting section 31. By adopting an integrated design in which the camera module 10 and the controller 20 are both mounted on the circuit board 30, the wiring between the camera module 10 and the controller 20 is reduced, thereby simplifying the installation process. By bending the curved transition section approximately 90 degrees, the second connecting section 32 for carrying the controller 20 can extend in a direction away from the light-incoming side of the camera module 10, thereby reducing the volume of the driver monitoring system. When the driver monitoring system is arranged on the A-pillar (not shown) or the steering wheel column (not shown) of the automobile, the second connecting section 32 can be accommodated in the cavity inside the A-pillar or the steering wheel column through the curved transition section 33, thereby reducing the difficulty of arranging the driver monitoring system.

[0056] In some optional embodiments, the circuit board 30 includes a rigid circuit board and a flexible circuit board, the first connecting section 31 and the second connecting section 32 are rigid circuit boards, and the curved transition section 33 is a flexible circuit board.

[0057] Optionally, the circuit board 30 is a rigid-flexible board, in which a rigid circuit board and a flexible circuit board are combined together by lamination or other processes, so that the circuit board 30 has both a rigid area and a flexible area.

[0058] The driver monitoring system provided in this embodiment, as the first connecting section 31 and the second connecting section 32 of the rigid circuit board, only need bolts and other connecting parts to complete the installation, simplifying the installation steps. The curved transition section 33 as a flexible circuit board realizes the bending function of the circuit board 30, thereby reducing the difficulty of arranging the driver monitoring system. The first connecting section 31 and the second connecting section 32 are respectively located on both sides of the curved transition section 33. After the first connecting section 31 and the second connecting section 32 are installed and fixed, the position of the curved transition section 33 is also fixed, and there is no need to perform welding and other connection processes on the curved transition section 33, thereby reducing the installation process.

[0059] Please refer to Figures 1 to 4 , Figure 4 An example is shown Figure 2 Schematic diagram of the structure of the upper shell and the positioning protrusion.

[0060] like Figures 1 to 4 As shown, in some optional embodiments, the driver monitoring system may further include an upper shell 40, the upper shell 40 includes a first support portion 41 and a second support portion 42, the first support portion 41 is used to support the first connecting section 31, the first support portion 41 and the camera module 10 are respectively located on both sides of the first connecting section 31. The second support portion 42 is used to support the second connecting section 32.

[0061] Optionally, the first support portion 41 is formed by extending along the first direction x, and the second support portion 42 is formed by extending along the second direction y, and the angle between the first support portion 41 and the second support portion 42 is approximately 90 degrees. The first connecting section 31 is connected to the first support portion 41 through a connecting member, and the second connecting section 32 is connected to the second support portion 42 through a connecting member.

[0062] The driver monitoring system provided in this embodiment also includes an upper shell 40, which includes a first support portion 41 and a second support portion 42. The first support portion 41 supports the first connecting section 31, and the second support portion 42 supports the second connecting section 32, thereby improving the strength of the circuit board 30.

[0063] In some optional embodiments, the driver monitoring system further includes a light source 50 mounted on the first connecting section 31, the light source 50 and the first supporting portion 41 are respectively located on both sides of the first connecting section 31, that is, the light source 50 and the camera module 10 are located on the same side of the first connecting section 31, and the light source 50 emits light toward the light-incoming side of the camera module. The upper housing 40 further includes a heat dissipation portion 43, the heat dissipation portion 43 is located on the side of the first supporting portion 41 away from the first connecting section 31, and the orthographic projection of the heat dissipation portion 43 on the first supporting portion 41 at least partially overlaps with the orthographic projection of the light source 50 on the first supporting portion 41.

[0064] Optionally, the light source 50 is an infrared fill light that can emit infrared light to assist the camera module 10 in capturing images at night.

[0065] The driver monitoring system provided in this embodiment improves the ability of the camera module 10 to collect images at night through the light source 50, and dissipates heat through the heat dissipation portion 43 corresponding to the position of the light source 50. The heat emitted by the light source 50 is transferred through the first connecting section 31 and the first supporting portion 41, and finally transferred to the air through the heat dissipation portion 43, thereby reducing the impact of the heat generated by the light source 50 on other components on the circuit board 30.

[0066] In some optional embodiments, the heat dissipation portion 43 includes at least one heat dissipation rib 431, and multiple heat dissipation ribs 431 extend along a third direction (z direction in the figure), and the heat dissipation rib 431 is connected between the first support portion 41 and the second support portion 42, and the third direction z intersects with the first direction x and the second direction y.

[0067] Optionally, the heat dissipation ribs 431 are made of materials with high thermal conductivity such as aluminum alloy and copper alloy. The third direction z forms an acute angle with the first direction x and the second direction y.

[0068] The driver monitoring system provided in this embodiment transfers the heat generated by the light source 50 to the air through the heat dissipation ribs 431, thereby helping the light source 50 to dissipate heat. At the same time, the heat dissipation ribs 431 connect the first support part 41 and the second support part 42, so that a triangular stable structure is formed between the heat dissipation ribs 431, the first support part 41 and the second support part 42, thereby improving the strength of the upper shell 40.

[0069] Please refer to Figures 3 to 5 , Figure 5 An example is shown Figure 2 A schematic diagram of the structure of the upper shell and the positioning protrusion in another viewing angle.

[0070] like Figures 3 to 5 As shown, in some optional embodiments, the upper shell 40 also includes a boss portion 44, which protrudes from the first support portion 41 toward the first connecting section 31, and the orthographic projection of the boss portion 44 on the first support portion 41 at least partially overlaps with the orthographic projection of the light source 50 on the first support portion 41.

[0071] Optionally, two light sources 50 are respectively located on both sides of the camera module 10, and the two bosses 44 respectively correspond to the two light sources 50. In practical applications, the bosses 44 match the number and position of the light sources 50.

[0072] The driver monitoring system provided in this embodiment is connected to the first connecting section 31 through a boss portion 44 protruding toward the first connecting section 31, and the position of the boss portion 44 corresponds to the light source 50, so that the heat emitted by the light source 50 can be transferred to the first support portion 41 through the boss portion 44, and finally transferred to the heat dissipation portion 43, and the other positions of the first connecting section 31 are spaced from the first support portion 41, thereby reducing the probability of heat being transferred back to the first connecting section 31 through the first support portion 41, and further reducing the impact of the heat generated by the light source 50 on other components on the circuit board 30.

[0073] In some optional embodiments, a thermal conductive adhesive (not shown) is provided between the boss portion 44 and the first connecting section 31 , and the thermal conductive adhesive connects the boss portion 44 and the first connecting section 31 .

[0074] The driver monitoring system provided in this embodiment improves the heat transfer efficiency of the light source 50 dissipating heat toward the boss portion 44 by providing a heat-conducting adhesive between the boss portion 44 and the first connecting section 31 .

[0075] In some optional embodiments, a heat-insulating groove 311 penetrating the first connecting section 31 is provided on the first connecting section 31 , and the light source 50 and the camera module 10 are respectively located on both sides of the heat-insulating groove 311 .

[0076] The driver monitoring system provided in this embodiment separates the light source 50 and the camera module 10 through the heat insulation groove 311 , thereby reducing the heat transferred from the light source 50 to the camera module 10 through the first connecting section 31 .

[0077] Please refer to Figure 2 , Figure 5 and Figure 6 , Figure 6 An example is shown Figure 2 Schematic diagram of the structure of the support seat, positioning groove and limit block.

[0078] like Figure 2 , Figure 5 and Figure 6 As shown, in some optional embodiments, the driver monitoring system also includes a support base 60, which is connected to the first support portion 41, and a first accommodating cavity (not marked) is formed between the support base 60 and the first support portion 41, and at least part of the first connecting section 31 is located in the first accommodating cavity.

[0079] Optionally, the first connecting section 31 is connected to the support seat 60 through a connecting member, and the support seat 60 is connected to the first support portion 41 through a connecting member, so that the first connecting section 31 and the boss portion 44 are connected through a thermal conductive adhesive. The connecting member is a bolt. The first connecting section 31 is connected to the support seat 60 through four bolts, and the distances from the four bolts to the camera module 10 are equal.

[0080] The driver monitoring system provided in this embodiment accommodates the first connecting section 31 through the first accommodating cavity between the first supporting portion 41 and the supporting seat 60, and the first connecting section 31 is connected to the supporting seat 60 through four bolts, and the spacing between the four bolts and the camera module 10 is equal. The first connecting section 31 is more evenly acted upon by the bolts in all directions, thereby reducing the stress concentration on the first connecting section 31 and thereby increasing the service life of the circuit board 30.

[0081] In some optional embodiments, a through hole (not shown) extending along the second direction y is provided on the support base 60, and the projection of the camera module 10 on the first connecting section 31 at least partially overlaps with the projection of the through hole on the first connecting section 31.

[0082] Optionally, the orthographic projection of the through hole on the first connecting section 31 at least partially overlaps with the orthographic projection of the light source 50 on the first connecting section 31 , so that the light emitted by the light source 50 can be emitted from the first accommodating cavity through the through hole.

[0083] In some optional embodiments, a positioning structure is provided between the support seat 60 and the first support portion 41, and the positioning structure includes at least one positioning protrusion 411 and a positioning groove 61 matching the positioning protrusion 411. One of the positioning protrusion 411 and the positioning groove 61 is provided on the support seat 60, and the other is provided on the first support portion 41.

[0084] Optionally, the positioning protrusion 411 is disposed on the side of the first support portion 41 facing the support seat 60, and the positioning groove 61 is disposed on the side of the support seat 60 facing the first support portion 41. The number, size, and position of the positioning protrusion 411 match those of the positioning groove 61.

[0085] The driver monitoring system provided in this embodiment helps to quickly position the first support part 41 and the support seat 60 when connecting them, and improves the connection stability between the first support part 41 and the support seat 60 by respectively providing the positioning protrusion 411 and the positioning groove 61 on the first support part 41 and the support seat 60.

[0086] Please refer to Figure 2 , Figure 5 and Figure 7 , Figure 7 An example is shown Figure 2 Schematic diagram of the structure of the lens hood and the card slot.

[0087] like Figure 2 , Figure 5 and Figure 7 As shown, in some optional embodiments, the driver monitoring system may further include a sunshade 70, which is connected to the support base 60. The sunshade 70 and the first support portion 41 are respectively located on both sides of the support base 60, and a second accommodating cavity (not shown) is formed between the sunshade 70 and the support base 60, and the light-incoming side of the camera module 10 is located in the second accommodating cavity.

[0088] Optionally, the light-incoming side of the light-shield 70 and the light-incoming side of the camera module 10 point in the same direction.

[0089] The driver monitoring system provided in this embodiment reduces the influence of ambient light on the camera module 10 by setting a sunshade 70, thereby improving the imaging effect of the camera module 10. By setting the curved transition section 33, the second connecting section 32 can be accommodated in the cavity inside the A-pillar or the steering wheel column, and only a part of the sunshade 70 is an exposed surface. Therefore, during preparation, the sunshade 70 can be connected as a whole by two-color injection molding or multiple injection molding and then glued. The exposed surface is made of PC (polycarbonate) plastic, and the non-exposed surface is made of ABS (acrylonitrile-butadiene-styrene copolymer) resin, which not only ensures the interior style of the whole vehicle, but also reduces the cost.

[0090] In some optional embodiments, the support seat 60 is connected to the light shield 70 via a buckle structure, which includes at least one limit block 62 and a slot 71 matching the limit block 62. One of the limit block 62 and the slot 71 is disposed on the support seat 60, and the other is disposed on the light shield 70.

[0091] Optionally, the limit block 62 is disposed on the support base 60 , and the slots 71 are disposed on the light shield 70 . The number, size, and position of the slots 71 are matched with those of the limit block 62 .

[0092] The driver monitoring system provided in this embodiment improves the connection stability between the light shield 70 and the support base 60 by means of the slot 71 and the limit block 62 respectively arranged on the light shield 70 and the support base 60, while allowing the light shield 70 and the support base 60 to be quickly separated, thereby facilitating the maintenance and inspection of the driver monitoring system.

[0093] In some optional embodiments, the driver monitoring system further includes a lower shell 80 , a third accommodating cavity (not shown) is formed between the lower shell 80 and the second supporting portion 42 , and at least a portion of the second connecting section 32 is located in the third accommodating cavity.

[0094] Optionally, at least one positioning column 421 is provided on the second support portion 42, and the positioning column 421 is used to assist in positioning the second connection section 32 when the second connection section 32 is connected to the second support portion 42. The connecting member passes through the lower shell 80 and the second connection section 32 and connects the lower shell 80 and the second connection section 32 to the second support portion 42. The connecting member can be a bolt.

[0095] In some optional embodiments, the lower shell 80 and the second supporting portion 42 are both made of metal.

[0096] The driver monitoring system provided in this embodiment is used to accommodate the second connecting section 32 and the controller 20 on the second connecting section 32 through the third accommodating cavity enclosed by the lower shell 80 and the second support part 42, and the lower shell 80 and the second support part 42 are both made of metal materials, which improves the EMC (Electromagnetic Magnetic Compatibility) performance of the second connecting section 32 and the controller 20.

[0097] In some optional embodiments, the camera module 10 includes a sensor 11 and a lens 12, and the sensor 11 is mounted on the first connecting section 31. The lens 12 is connected to a side of the sensor 11 away from the first connecting section 31, and the lens 12 is extended along the second direction y.

[0098] Optionally, the sensor 11 and the light source 50 are respectively located on both sides of the heat insulation groove 311. The lens 12 is located in the second accommodating cavity, and the lens 12 is mounted on the support seat 60 by a bonding process. The projection of the light-emitting side of the lens 12 on the first connecting section 31 and the projection of the through hole on the first connecting section 31 at least partially overlap. After passing through the light shield 70, the light enters the lens 12 and is collected by the sensor 11. The image signal collected by the sensor 11 is transmitted to the controller 20 through the circuit board 30. The controller 20 determines the driver's state through the built-in algorithm and sends corresponding instructions to other actuators on the car.

[0099] In some optional embodiments, the camera module 10 further includes a sealing ring 13 , which is located between the lens 12 and the sensor 11 , and the lens 12 and the sensor 11 are connected via the sealing ring 13 .

[0100] The driver monitoring system provided in this embodiment reduces light leakage between the lens 12 and the sensor 11 by means of the sealing ring 13 located between the lens 12 and the sensor 11 , thereby improving the imaging effect of the camera module 10 .

[0101] like Figures 1 to 7 As shown, optionally, when assembling the driver monitoring system, firstly, the sealing ring 13 is pre-placed at the corresponding position on the support seat 60, and the first connecting section 31 is pressed against the sealing ring, so that the sealing ring is aligned with the sensor 11 on the first connecting section 31, and then the first connecting section 31 is connected to the support seat 60 by bolts. Then, the support seat 60 is aligned with the first support portion 41 through the positioning structure, and the support seat 60, the first connecting section 31 and the first support portion 41 are connected as a whole by bolts. Then, the lens 12 is connected to the support seat 60 through a gluing process, and the lens 12 is aligned with the through hole and the sealing ring 13 to prevent dust and water droplets from entering between the lens 12 and the sensor 11, and to ensure that the lens 12 and the sensor 11 are not transparent. After the lens 12 is installed, the light shield 70 is connected to the support seat 60 through a snap-on structure. Then, the second connecting section 32 is bent, and aligned with the second support portion 42 through the positioning column 421, and then the lower shell 80, the second connecting section 32 and the second support portion 42 are connected as a whole by bolts.

[0102] Optionally, the various components in the driver monitoring system can be connected by bolt connection, laser welding, adhesive connection, etc.

[0103] The driver monitoring system provided in this embodiment includes a camera module 10, a controller 20 and a circuit board 30. The camera module 10 is used to collect driver information, and the controller 20 is used to receive and process the driver information collected by the camera module 10. The circuit board 30 includes a first connecting section 31, a second connecting section 32 and a curved transition section 33. The first connecting section 31 is extended along a first direction x, the camera module 10 is mounted on the first connecting section 31, the second connecting section 32 is extended along a second direction y, the controller 20 is mounted on the second connecting section 32, the curved transition section 33 is bent from the light-incoming side of the first connecting section 31 away from the camera module 10, and the second connecting section 32 is connected to a side of the curved transition section 33 away from the first connecting section 31. By adopting an integrated design in which the camera module 10 and the controller 20 are both mounted on the circuit board 30, the wiring between the camera module 10 and the controller 20 is reduced, thereby simplifying the installation process. By bending the curved transition section approximately 90 degrees, the second connection section 32 for carrying the controller 20 can extend in a direction away from the light-incoming side of the camera module 10, thereby reducing the volume of the driver monitoring system. When the driver monitoring system is arranged on the A-pillar or steering column of the car, the curved transition section 33 allows the second connection section 32 to be accommodated in the cavity inside the A-pillar or steering column, thereby reducing the difficulty of arranging the driver monitoring system.

[0104] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A driver monitoring system, characterized in that: include: Camera module, used to collect driver information; A controller, used to receive the driver information collected by the camera module; The circuit board comprises a first connecting section, a second connecting section and a curved transition section, wherein the first connecting section is formed by extending along a first direction, and the camera module is mounted on the first connecting section; the curved transition section is formed by bending from the light-incoming side of the first connecting section away from the camera module; the second connecting section is connected to a side of the curved transition section away from the first connecting section, and the second connecting section is formed by extending along a second direction, and the controller is mounted on the second connecting section, and the second direction intersects with the first direction; An upper shell, the upper shell comprising a first supporting portion and a second supporting portion, the first supporting portion is used to support the first connecting section, the first supporting portion and the camera module are respectively located on both sides of the first connecting section, and the second supporting portion is used to support the second connecting section; a light source mounted on the first connecting section, the light source and the first supporting portion being respectively located on two sides of the first connecting section, and the light source emitting light toward a light-incoming side of the camera module; The upper shell also includes a heat dissipation portion, which is located on a side of the first support portion away from the first connecting section, and an orthographic projection of the heat dissipation portion on the first support portion at least partially overlaps with an orthographic projection of the light source on the first support portion.

2. The driver monitoring system according to claim 1, characterized in that: The heat dissipation portion includes at least one heat dissipation rib, a plurality of the heat dissipation ribs extend along a third direction, and the heat dissipation ribs are connected between the first support portion and the second support portion, and the third direction intersects with both the first direction and the second direction.

3. The driver monitoring system according to claim 1, characterized in that: The upper shell further includes a boss portion, which protrudes from the first support portion toward the first connecting section, and an orthographic projection of the boss portion on the first support portion at least partially overlaps with an orthographic projection of the light source on the first support portion.

4. The driver monitoring system according to claim 3, characterized in that: Heat-conducting glue is provided between the boss portion and the first connecting section.

5. The driver monitoring system according to claim 1, characterized in that: The first connecting section is provided with a heat-insulating groove which runs through the first connecting section, and the light source and the camera module are respectively located on two sides of the heat-insulating groove.

6. The driver monitoring system according to claim 1, characterized in that: It also includes a support seat, which is connected to the first support portion. A first accommodating cavity is formed between the support seat and the first support portion, and at least a portion of the first connecting section is located in the first accommodating cavity.

7. The driver monitoring system according to claim 6, characterized in that: The support base is provided with a through hole extending along the second direction, and the projection of the camera module on the first connecting section at least partially overlaps with the projection of the through hole on the first connecting section.

8. The driver monitoring system according to claim 6, characterized in that: A positioning structure is provided between the support seat and the first support portion, and the positioning structure includes at least one positioning protrusion and a positioning groove matching the positioning protrusion, one of the positioning protrusion and the positioning groove is provided on the support seat, and the other is provided on the first support portion.

9. The driver monitoring system according to claim 6, characterized in that: It also includes a light shield, which is connected to the support base. The light shield and the first support part are respectively located on both sides of the support base. A second accommodating cavity is formed between the light shield and the support base, and the light input side of the camera module is located in the second accommodating cavity.

10. The driver monitoring system according to claim 9, characterized in that: The shading hood is connected to the supporting seat via a snap-fit ​​structure, which includes at least one limit block and a slot matching the limit block, one of the limit block and the slot is arranged on the supporting seat, and the other is arranged on the shading hood.

11. The driver monitoring system according to claim 1, characterized in that: It also includes a lower shell, which is connected to the second supporting portion. A third accommodating cavity is formed between the upper shell and the second supporting portion, and at least a portion of the second connecting section is located in the third accommodating cavity.

12. The driver monitoring system according to claim 11, characterized in that: The lower shell and the second supporting portion are made of metal.

13. The driver monitoring system according to claim 1, characterized in that: The camera module comprises: a sensor, wherein the sensor is mounted on the first connecting section; A lens is connected to a side of the sensor facing away from the first connecting section, and the lens is extended and formed along the second direction.

14. The driver monitoring system according to claim 13, characterized in that: The camera module also includes a sealing ring, which is located between the lens and the sensor.

15. The driver monitoring system according to claim 1, characterized in that: The circuit board includes a rigid circuit board and a flexible circuit board, the first connecting section and the second connecting section are rigid circuit boards, and the curved transition section is a flexible circuit board.

16. The driver monitoring system according to claim 1, characterized in that: An angle formed between the first direction and the second direction is between 70 degrees and 110 degrees.

17. The driver monitoring system according to claim 1, characterized in that: The first direction is perpendicular to the second direction.

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