Seat occupancy sensing device and vehicle

Abstract

The utility model provides a kind of seat personnel sensing device and vehicle, belong to vehicle technical field.The seat personnel sensing device includes seat sensor, reminding module and controller, seat sensor and reminding module are electrically connected controller respectively, seat sensor is set on the cushion of vehicle seat, cushion has multiple convex hull, there is quilting between two adjacent convex hulls, the back of seat sensor is bonded on the surface of at least two the convex hull, and the back of the seat sensor is bonded with the surface of at least one the quilting.When personnel sits on the convex hull of cushion, seat sensor is pressed and generates resistance value or capacitance value change, controller determines that there is someone on seat according to the change of resistance or capacitance, and controller controls reminding module to issue the reminder of safety belt.Due to the structure of seat sensor and cushion adaptation, and seat sensor and cushion can be completely attached, realize the detection accuracy of the cushion with multiple convex hulls is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a vehicle seat occupant sensing device and a vehicle. Background Technology

[0002] Vehicle seat occupant detection devices typically include seat sensors, a controller, and an alert module. When someone occupants are in the seat and are not wearing a seatbelt, the seat sensor generates an electrical signal upon pressure. Upon receiving this signal, the controller activates the alert module to remind the occupant to fasten their seatbelt. Vehicle seats have an A-side and a B-side. The A-side, consisting of the seat cushion and backrest, is in contact with the occupant and is made of low-density polyurethane foam, providing resilience. The B-side is the seat's support layer, constructed using high-density polyurethane or composite fiber reinforcement to ensure the seat's structural integrity. Sensors are installed on the A-side of the seat; they change the resistance signal based on the detected pressure to determine whether a driver is seated.

[0003] Existing seat sensors can only be matched with planar foam. When the seat A surface has multiple protrusions and the adjacent protrusions have quilted features, the existing seat sensors cannot fully fit with the seat A surface, causing the sensors to malfunction. As a result, even if there are passengers in the seat, the existing seat sensors cannot detect them, leading to inaccurate detection. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle seat occupant sensing device, which solves the problem of low detection accuracy of existing reminder devices and improves detection accuracy.

[0005] To achieve the objective of this utility model, the following technical solution is adopted:

[0006] According to one aspect of the present invention, a vehicle seat occupant sensing device is provided, comprising a seat sensor, an alert module, and a controller. The seat sensor and the alert module are electrically connected to the controller. The seat sensor is disposed on the seat cushion of a vehicle seat for detecting whether the seat is occupied. The seat cushion has multiple protrusions, and a quilt is provided between two adjacent protrusions. The back of the seat sensor is bonded to the surface of at least two of the protrusions, and the back of the seat sensor is bonded to the surface of at least one of the quilts.

[0007] According to one embodiment of the present invention, the seat sensor includes a soft substrate and a plurality of pressure sensing elements. The back side of the soft substrate is bonded to the surface of at least two of the convex bulges, and the back side of the soft substrate is bonded to the surface of at least one of the quilted seams. The pressure sensing elements are electrically connected to the controller. The plurality of pressure sensing elements are respectively disposed on the soft substrate, and each pressure sensing element is located at the high point or the highest point in the convex direction of the convex bulge.

[0008] According to one embodiment of the present invention, the seat sensor is located on three adjacent convex bulges, and each of the three adjacent convex bulges has at least one pressure detection element.

[0009] According to one embodiment of the present invention, the soft substrate includes a first C-shaped portion and a second C-shaped portion connected to the first C-shaped portion. The first C-shaped portion and the second C-shaped portion together form an X-shape. There are four pressure detection elements, two of which are respectively disposed at both ends of the first C-shaped portion, and the other two are respectively disposed at both ends of the second C-shaped portion.

[0010] According to one embodiment of the present invention, three adjacent convex humps are respectively referred to as the first convex hump, the second convex hump, and the third convex hump. The first convex hump has two pressure detection elements, and the second convex hump and the third convex hump each have one pressure detection element.

[0011] According to one embodiment of the present invention, one end of the second C-shaped portion has a circuit guide portion, and the end of the circuit guide portion is located at an adjacent quilting position.

[0012] According to one embodiment of the present invention, the convex hull is a rhomboid convex hull, and multiple convex hulls are arranged in a rhomboid pattern.

[0013] According to one embodiment of the present invention, it further includes a foot sensor component, which is disposed in the driving operation area and electrically connected to the controller.

[0014] According to one embodiment of the present invention, the driving operation area includes a floor, a footrest, a brake pedal, and an accelerator pedal. The foot sensing component includes a floor sensor connected to the floor, a footrest sensor connected to the footrest, a brake pedal sensor connected to the brake pedal, and an accelerator pedal sensor connected to the accelerator pedal. The floor sensor, the footrest sensor, the brake pedal sensor, and the accelerator pedal sensor are arranged in parallel.

[0015] This utility model also discloses a vehicle, including the aforementioned seat occupant sensing device.

[0016] One embodiment of this utility model has the following advantages or beneficial effects:

[0017] This utility model discloses a vehicle seat occupant sensing device, comprising a seat sensor, an alert module, and a controller. The seat sensor and the alert module are electrically connected to the controller. The seat sensor is disposed on the seat cushion of a vehicle seat, the seat cushion having multiple protrusions, with quilting between adjacent protrusions. The back of the seat sensor is adhered to the surface of at least two of the protrusions, and the back of the seat sensor is also adhered to the surface of at least one of the quilted seams. When a person sits on a protrusion of the seat cushion, the seat sensor is compressed, resulting in a change in resistance or capacitance. The controller determines that someone is in the seat based on the change in resistance or capacitance, and the controller controls the alert module to issue a seatbelt reminder. Because the seat sensor is adapted to the seat cushion structure and can completely fit the seat cushion, the detection accuracy of seat cushions with multiple protrusions is improved. Attached Figure Description

[0018] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0019] Figure 1 This is a top view of a schematic diagram of the electrical connections of a vehicle seat occupant sensing device according to an exemplary embodiment.

[0020] Figure 2 This is a schematic diagram illustrating a seat sensor located on the seat cushion according to an exemplary embodiment.

[0021] Figure 3 This is a schematic diagram of the structure of a seat sensor according to an exemplary embodiment.

[0022] Figure 4 This is a schematic diagram of the electrical connections between pressure sensing elements according to an exemplary embodiment.

[0023] Figure 5 This is a schematic diagram of the structure of a vehicle driving operation area according to an exemplary embodiment.

[0024] Figure 6 This is a schematic diagram of the structure of a seat sensor according to an exemplary embodiment.

[0025] The reference numerals in the attached figures are explained as follows:

[0026] 1. Seat sensor; 11. Soft substrate; 111. First C-shaped part; 112. Second C-shaped part; 1121. Circuit guide part; 1122. Terminal; 12. Pressure detection element; 2. Reminder module; 3. Controller; 4. Protrusion; 5. Quilting; 6. Foot sensor assembly; 61. Floor sensor; 62. Footrest sensor; 63. Brake plate sensor; 64. Accelerator pedal sensor; 7. Driving control area; 71. Floor; 72. Footrest; 73. Brake plate; 74. Accelerator pedal; 9. Seat. Detailed Implementation

[0027] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0028] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0029] like Figure 1-6 As shown, an embodiment of the present invention provides a vehicle seat occupant sensing device, comprising a seat sensor 1, an alert module 2, and a controller 3. The seat sensor 1 and the alert module 2 are electrically connected to the controller 3. The seat sensor 1 is disposed on the seat cushion of a vehicle seat and is used to detect whether the seat 9 is occupied. The seat cushion has multiple protrusions 4, and a quilting 5 is provided between two adjacent protrusions 4. The back of the seat sensor 1 is tightly bonded to the surface of at least two protrusions 4, and the back of the seat sensor 1 is bonded to the surface of at least one quilting 5. The seat sensor 1 has a through groove 1123 at the quilting 5, so that the seat sensor 1 is adapted to the seat cushion structure and the back of the seat sensor 1 is tightly fitted to the surface of the quilting 5, preventing one part of the seat sensor 1 from being pressed and causing the other part to lift up.

[0030] After the controller 3 is powered on, in the initial state, the circuit of seat sensor 1 is open. When a person sits on the protrusion 4 of the seat cushion, the seat sensor 1 is compressed, causing a change in resistance, which closes the circuit of seat sensor 1 and transmits an electrical signal to the controller 3. The controller 3 determines that there is someone in the seat based on the received electrical signal and controls the reminder module 2 to issue a seat belt reminder. Because seat sensor 1 is adapted to the structure of the seat cushion and can fit completely against the seat cushion, the detection accuracy of seat cushions with multiple protrusions is improved.

[0031] like Figure 2-4 As shown, in a preferred embodiment of this invention, the seat sensor 1 includes a flexible substrate 11 and multiple pressure sensing elements 12. The back side of the flexible substrate 11 is bonded to the surface of the protrusion 4 and the surface of the quilting 5, ensuring a tight fit between the flexible substrate 11 and the surfaces of the protrusion 4 and the quilting 5, preventing one part from being compressed while the other part is raised, thus affecting the accuracy of the judgment. The multiple pressure sensing elements 12 are electrically connected to the input terminal of the controller 3. The multiple pressure sensing elements 12 are respectively disposed on the flexible substrate 11, and each pressure sensing element 12 is located at the high point or highest point in the convex direction of the protrusion 4, so that the pressure sensing element 12 can be fully compressed, avoiding the situation where the pressure sensing element 12 is lower than the protrusion 4 and cannot be fully compressed, thus preventing the controller 3 from making an inaccurate judgment. For example, the flexible substrate 11 is made of two layers of flexible insulating material, and the pressure sensing element 12 is located between the two layers of flexible insulating material.

[0032] like Figure 2 As shown, in a preferred embodiment of this invention, the convex 4 is a rhomboid protrusion, and multiple convex 4 are arranged in a rhomboid pattern. The seat sensor 1 is located on three adjacent convex 4, and each of the three adjacent convex 4 has at least one pressure detection element 12, thereby increasing the coverage area of ​​the seat sensor 1 and improving the accuracy of the judgment.

[0033] like Figure 2 As shown, in a preferred embodiment of this utility model, the three adjacent convex bulges 4 are respectively designated as the first convex bulge, the second convex bulge, and the third convex bulge. The seat sensor 1 has four pressure detection elements 12, such as... Figure 3 As shown, the four pressure sensing elements 12 are labeled A1, A2, B1 and B2 respectively. A1 and A2 are on the first convex hull, B1 is on the second convex hull and B2 is on the third convex hull.

[0034] For example, the center of A1 and the center of A2 are 50-100mm apart, the center of B1 and the center of B2 are 80-200mm apart, the center of A2 and the center of B2 are 70-120mm apart, and the center of A1 and the center of B1 are 70-120mm apart.

[0035] like Figure 2 , 3 As shown, in a preferred embodiment of this utility model, the soft substrate 11 includes a first C-shaped portion 111 and a second C-shaped portion 112 connected to the first C-shaped portion 111, wherein the first C-shaped portion 111 and the second C-shaped portion 112 together form an X shape. Four pressure sensing elements 12 are provided, with two pressure sensing elements 12 respectively disposed at both ends of the first C-shaped portion 111, and the other two pressure sensing elements 12 respectively disposed at both ends of the second C-shaped portion 112.

[0036] like Figure 1-4 As shown, in a preferred embodiment of the present invention, one end of the second C-shaped portion 112 has a circuit guide portion 1121, the end of the circuit guide portion 1121 is located at the adjacent quilting 5 position, the end of the circuit guide portion 1121 has a terminal 1122, the quilting 5 has a wire hole corresponding to the terminal 1122, and the wire passes through the wire hole to connect to the controller.

[0037] like Figure 1 , 5 As shown in Figures 6 and 7, in a preferred embodiment of this utility model, the seat occupant sensing device further includes a foot sensing component 6.

[0038] A foot sensor 6 is located in the driver's operating area 7 to detect pressure signals in the area. The foot sensor 6 is connected in series with the seat sensor 1, or it can be electrically connected separately to the input of the controller 3. The controller 3 only determines that someone is in the driver's seat when both the foot sensor 6 and the seat sensor 1 are pressurized and generate electrical signals. This prevents heavy objects from being mistakenly identified as occupied and triggering an alert. In this embodiment, by working in conjunction with the seat sensor 1, the risk of misidentifying heavy objects as people can be eliminated, assisting the vehicle in determining whether the driver is inside and enabling functions such as assisted driving, automatic power on / off, and driver departure alerts.

[0039] like Figure 5 , 6 As shown, in a preferred embodiment of this utility model, the driving operation area 7 includes a floor 71, a footrest 72, a brake pedal 73, and an accelerator pedal 74. The foot sensing component 6 includes a floor sensor 61 connected to the floor 71, a footrest sensor 62 connected to the footrest 72, a brake pedal sensor 63 connected to the brake pedal 73, and an accelerator pedal sensor 64 connected to the accelerator pedal 74. The floor sensor 61, footrest sensor 62, brake pedal sensor 63, and accelerator pedal sensor 64 are arranged in parallel, and their input terminals are all connected to the output terminal of the seat sensor 1, and their output terminals are all connected to the input terminal of the controller 3. In this way, the floor sensor 61, footrest sensor 62, brake pedal sensor 63, and accelerator pedal sensor 64 provide parallel signals. As long as any one of them is pressed by a person's foot, generating a pressure signal, it is determined that there is someone in the driving operation area 7, and the controller 3 sends a signal that there is someone in the driver's seat. By cooperating with the seat sensor 1, it is possible to effectively avoid misidentifying heavy objects as the driver or passenger.

[0040] For example, floor sensor 61 is located on the floor where the driver frequently places their feet, footrest sensor 62 is fixed to the surface of the footrest that contacts the bottom of the foot, brake pedal sensor 63 is located on the surface of the brake pedal that contacts the bottom of the foot, and accelerator pedal sensor 64 is located on the surface of the accelerator pedal that contacts the bottom of the foot.

[0041] In a preferred embodiment of this utility model, the occupant sensing device further includes a seatbelt buckle sensor for sensing whether the seatbelt is locked. The seatbelt buckle sensor is disposed inside the seatbelt buckle and electrically connected to the controller 3. If the controller 3 determines that there is someone in the seat and the seatbelt buckle sensor does not generate an electrical signal, the controller 3 determines that the seatbelt is not locked, and the reminder module 2 continuously issues a reminder. When the seatbelt latch is inserted into the buckle, the seatbelt buckle sensor is pressed and generates an electrical signal, the controller 3 determines that the seatbelt is locked, and the reminder module 2 stops issuing reminders, thereby improving driving safety.

[0042] The seat sensor 1, the second sensor 61, and the seat belt buckle sensor are any one of the following: resistive pressure sensor, piezoelectric pressure sensor, and piezoresistive pressure sensor.

[0043] The reminder module 2 is one or a combination of a buzzer, an indicator light, and a speaker, which provides timely and accurate reminders through buzzing, lighting, and voice broadcasting.

[0044] This utility model also provides a vehicle including the aforementioned seat occupant sensing device, which is electrically connected to the vehicle's control system. Because the vehicle of this utility model includes the aforementioned seat occupant sensing device, it thereby achieves…

[0045] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0046] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0047] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle seat occupant sensing device, characterized in that, The system includes a seat sensor (1), an alert module (2), and a controller (3). The seat sensor (1) is disposed on the seat cushion of the seat (9) and is used to detect whether the seat (9) is occupied. The seat cushion has multiple protrusions (4) and a quilt (5) between two adjacent protrusions (4). The back of the seat sensor (1) is bonded to the surface of at least two of the protrusions (4) and the back of the seat sensor (1) is bonded to the surface of at least one of the quilts (5). The seat sensor (1) and the alert module (2) are electrically connected to the controller (3).

2. The vehicle seat occupant sensing device according to claim 1, characterized in that, The seat sensor (1) includes a soft substrate (11) and a plurality of pressure sensing elements (12). The back side of the soft substrate (11) is bonded to the surface of at least two of the protrusions (4), and the back side of the soft substrate (11) is bonded to the surface of at least one of the quilts (5). The pressure sensing elements (12) are electrically connected to the controller (3). The plurality of pressure sensing elements (12) are respectively disposed on the soft substrate (11), and each pressure sensing element (12) is located at the high point or the highest point of the protrusion direction of the protrusion (4).

3. The vehicle seat occupant sensing device according to claim 2, characterized in that, The seat sensor (1) is located on three adjacent convex bulges (4), and each of the three adjacent convex bulges (4) has at least one pressure sensing element (12).

4. The vehicle seat occupant sensing device according to claim 3, characterized in that, The soft substrate (11) includes a first C-shaped portion (111) and a second C-shaped portion (112) connected to the first C-shaped portion (111). The first C-shaped portion (111) and the second C-shaped portion (112) together form an X shape. There are four pressure detection elements (12), two of which are respectively disposed at both ends of the first C-shaped portion (111), and the other two are respectively disposed at both ends of the second C-shaped portion (112).

5. The vehicle seat occupant sensing device according to claim 4, characterized in that, The three adjacent convex hulls (4) are respectively referred to as the first convex hull, the second convex hull and the third convex hull. The first convex hull has two pressure detection elements (12), and the second convex hull and the third convex hull each have one pressure detection element (12).

6. The vehicle seat occupant sensing device according to claim 4, characterized in that, One end of the second C-shaped portion (112) extends to a circuit guide portion (1121), and the end of the circuit guide portion (1121) is located at the adjacent quilting (5).

7. The vehicle seat occupant sensing device according to claim 1, characterized in that, The convex hull (4) is a rhomboid or rectangular protrusion, and multiple convex hulls (4) are arranged in a rhomboid or matrix arrangement.

8. The vehicle seat occupant sensing device according to any one of claims 1-7, characterized in that, It also includes a foot sensor component (6), which is disposed in the driving operation area (7) and is electrically connected to the controller (3).

9. The vehicle seat occupant sensing device according to claim 8, characterized in that, The driving operation area (7) includes a floor (71), a footrest (72), a brake pedal (73), and an accelerator pedal (74). The foot sensing component (6) includes a floor sensor (61) connected to the floor (71), a footrest sensor (62) connected to the footrest (72), a brake pedal sensor (63) connected to the brake pedal (73), and an accelerator pedal sensor (64) connected to the accelerator pedal (74). The floor sensor (61), the footrest sensor (62), the brake pedal sensor (63), and the accelerator pedal sensor (64) are arranged in parallel.

10. A vehicle, characterized in that, Includes the vehicle seat occupant sensing device as described in any one of claims 1-9.

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