Seat control system and vehicle
By using the sliding position identification components of the sliding rheostat and the slide rail in the seat control system, the seat position memory problem caused by Hall sensor is solved, achieving higher position determination accuracy and better user experience.
Patent Information
- Application Number
- CN202421604909.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The position memory of existing car seats uses Hall sensors, resulting in low accuracy in position determination, affecting the user experience.
A plurality of sliding position identification components are adopted, each of which includes a sliding rheostat and a slide rail, and the detection resistance value is determined by the relative position change between the sliding rheostat and the slide rail, thereby accurately determining the seat position.
It improves the accuracy of seat position determination, improves the user experience, and solves the problem of inaccurate position memory caused by Hall sensors.
Smart Images
Figure CN222742565U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the utility model relate to the technical field of seat control, and in particular to a seat control system and a vehicle. Background Art
[0002] The existing position memory of automobile seats mostly calculates the seat position through Hall sensors, which has high requirements on the controller algorithm. When the motor stops or stalls, it is easy to generate redundant Hall counts, which affects the controller's judgment of the seat position, causing inaccurate memory position adjustment and a low user experience of the seat function. Utility Model Content
[0003] The embodiments of the utility model provide a seat control system and a vehicle, which solve the technical problem of low position determination accuracy in the prior art when using Hall sensors to calculate seat positions.
[0004] In a first aspect, an embodiment of the utility model provides a seat control system, the seat control system comprising a plurality of sliding position identification components, each of which comprises a correspondingly arranged sliding rheostat and a sliding rail;
[0005] The sliding rheostat in each sliding position identification component is fixed on the seat, and the sliding rail in each sliding position identification component is fixed on the vehicle frame. The sliding position identification component is used to change the relative position between the sliding rheostat and the sliding rail as the seat moves relative to the vehicle frame, thereby changing the detection resistance value determined by the sliding rheostat and the sliding rail.
[0006] In a second aspect, an embodiment of the utility model further provides a vehicle, comprising a vehicle frame and a seat, and also comprising the seat control system described in the first aspect.
[0007] The embodiment of the utility model discloses a seat control system and a vehicle, wherein the seat control system includes a plurality of sliding position identification components, each of which includes a correspondingly arranged sliding rheostat and a slide rail; the sliding rheostat in each sliding position identification component is fixed on the seat, and the slide rail in each sliding position identification component is fixed on the vehicle frame, and the relative position between the sliding rheostat and the corresponding slide rail is used to determine the detection resistance value, wherein, as the seat moves relative to the vehicle frame, the relative position between the sliding rheostat and the slide rail changes, thereby changing the detection resistance value determined by the sliding rheostat and the slide rail. The utility model uses the resistance change of the sliding rheostat to reflect the movement change between the seat and the vehicle frame, thereby solving the technical problem of low position determination accuracy in the prior art of using a Hall sensor to calculate the seat position, and achieves the technical effect of improving the position determination accuracy, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural diagram of a seat control system provided by an embodiment of the utility model. DETAILED DESCRIPTION
[0009] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0010] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the utility model are used to distinguish different objects, rather than to limit a specific order. The following embodiments of the utility model can be implemented separately, and the embodiments can also be implemented in combination with each other, and the embodiments of the utility model do not make specific limitations on this.
[0011] Figure 1 It is a structural diagram of a seat control system provided by an embodiment of the utility model.
[0012] like Figure 1 As shown, the seat control system includes a plurality of sliding position identification components 10, each of which includes a correspondingly arranged sliding rheostat 11 and a slide rail 12; the sliding rheostat 11 in each sliding position identification component 10 is fixed on the seat 20, and the slide rail 12 in each sliding position identification component 10 is fixed on the vehicle frame 30; the relative position between the sliding rheostat 11 and the corresponding slide rail 12 is used to determine the detection resistance value, wherein, as the seat 20 moves relative to the vehicle frame 30, the relative position between the sliding rheostat 11 and the slide rail 12 changes, thereby changing the detection resistance value determined by the sliding rheostat 11 and the slide rail 12.
[0013] Specifically, after each sliding rheostat 11 and slide rail 12 in the sliding position identification component are fixed on the seat 20 and the vehicle frame 30 respectively, when the seat 20 moves relative to the vehicle frame 30, the relative position between the sliding rheostat 11 and the slide rail 12 set on the vehicle frame 30 will change. Since the sliding piece of the sliding rheostat 11 will slide with the movement of the seat 20, the resistance value of the sliding rheostat 11 will change with the length of the area of the resistance detection loop connected to the slide rail 12. By collecting the detection resistance value and utilizing the size of the detection resistance value to accurately determine the current position of the seat 20, the error generated during the movement of the Hall motor in the prior art is compensated, which not only increases the accuracy of determining the position of the seat 20, but also improves the competitiveness of the product.
[0014] The utility model uses the resistance change of a sliding rheostat to reflect the movement change between the seat and the vehicle frame, thereby solving the technical problem of low position determination accuracy in the prior art of using Hall sensors to calculate the seat position, and achieves the technical effect of improving the position determination accuracy and thus improving the user experience.
[0015] Optionally, the slide rail 12 in the sliding position identification component is a translation slide rail and / or a rotation slide rail.
[0016] Specifically, the movement modes of the seat 20 in the vehicle include but are not limited to forward and backward movement, up and down movement, left and right movement, rotational movement of the seat back and rotational movement of the seat 20. Therefore, the slide rail 12 in the sliding position identification component can also be set as a translation slide rail and a rotational slide rail as needed, wherein the translation slide rail can be set to the forward and backward direction, left and right direction, up and down direction, etc. based on the driving direction of the vehicle, and the rotational slide rail can be set under the seat 20 and at the seat back as needed.
[0017] Optionally, the slide rail 12 is used to be fixed on the surface of the vehicle frame 30, and is used to guide the seat 20 to move parallel or rotate along the slide rail 12; the sliding rheostat 11 is used to be fixed on the surface of the seat 20, and the sliding piece of the sliding rheostat 11 is in contact with the resistance area of the slide rail 12, and is used to change the area length of the resistance area of the slide rail 12 connected to the resistance detection circuit as the seat 20 moves.
[0018] Specifically, the slide rail 12 is arranged on the surface of the vehicle frame 30 and on the inner surface of the vehicle frame 30. The seat 20 moves parallel or rotates in all directions along the slide rail 12 to achieve relative displacement with the vehicle frame 30. The sliding rheostat 11 is arranged on the surface of the seat 20 and can be arranged under the seat 20 or on the backrest as needed. By connecting the slider of the sliding rheostat 11 with the resistance area of the slide rail 12, when the slider moves with the movement of the seat 20, the length of the resistance area of the slide rail 12 connected to the resistance detection circuit can be changed, thereby changing the resistance detection area, so that different detection resistance values can be obtained to indicate the moving position of the seat 20.
[0019] Optionally, the translational slide rail is linear in shape and is disposed between the seat cushion and the vehicle frame 30, and the multiple translational slide rails are disposed in different directions; the rotational slide rail is arc-shaped and is disposed between the seat back and the seat cushion, or, between the seat cushion and the vehicle frame 30.
[0020] Specifically, the translational slide rail is usually linear and can be set to the front and rear direction, left and right direction, up and down direction, etc. according to the needs of the moving direction based on the driving direction of the vehicle. The rotary slide rail is usually arc-shaped. The rotary slide rail required for adjusting the angle of the seat back is set between the seat back and the seat cushion. The rotary slide rail required for rotating and moving the seat 20 is set between the seat cushion and the vehicle frame 30.
[0021] In an optional implementation, the length of the sliding resistor 11 corresponding to the translation rail is equal to the length of the corresponding translation rail.
[0022] Specifically, in order to ensure accurate measurement of the detection resistance value, it is necessary to ensure that the movement of the slider of the sliding rheostat 11 can be consistent with the relative position movement between the seat 20 and the translation rail. Therefore, the length of the sliding rheostat 11 can be set to be equal to the length of the corresponding translation rail. When the seat 20 moves a set distance along the translation rail, the slider of the sliding rheostat 11 also moves the same set distance, thereby ensuring the accuracy of the measurement.
[0023] In another optional implementation, the length of the sliding rheostat 11 corresponding to the translational slide is smaller than the length of the corresponding translational slide, and the slider of the sliding rheostat 11 moves in proportion to the length of the area where the corresponding translational slide is connected to the resistance detection circuit.
[0024] Specifically, according to the needs of space setting, the length of the sliding rheostat 11 can also be set to be shorter than the length of the corresponding translation rail. The advantage of this is that it can save space, but in order to ensure the accuracy of measurement, the moving distance of the sliding rheostat 11 slider is set to be proportional to the relative movement position between the seat 20 and the translation rail. For example, assuming that the length of a translation rail is 40cm, the length of the corresponding sliding rheostat 11 is 10cm, and the meaning of proportional movement is that when the relative movement distance between the seat 20 and the translation rail is 20cm, that is, the length of the area where the translation rail is connected to the resistance detection loop is 20cm, and 20cm is half of the length of the translation rail 40cm, then the slider of the corresponding sliding rheostat 11 also needs to move half of the length of the sliding rheostat 11 of 10cm, that is, the slider moves 5cm, so as to ensure the synchronization between the slider movement distance and the length of the area where the translation rail is connected to the resistance detection loop, and ensure the accuracy of measurement.
[0025] Optionally, the sliding piece of the sliding rheostat 11 corresponding to the rotating slide rail moves in proportion to the rotation angle of the rotating slide rail.
[0026] Specifically, for the rotating slide, in order to ensure the accurate measurement of the detection resistance value, it is necessary to ensure that the moving distance of the slider of the sliding rheostat 11 is proportional to the rotation angle between the seat 20 and the rotating slide. For example, assuming that the rotatable angle of a rotating slide is 90°, the length of the corresponding sliding rheostat 11 is 10 cm, and the meaning of proportional movement is that when the relative rotation angle between the seat 20 and the rotating slide is 30°, 30° is one-third of the rotatable angle of the rotating slide of 90°, then the slider of the corresponding sliding rheostat 11 also needs to move one-third of the length of the sliding rheostat 11 of 10 cm, that is, the slider moves 10 / 3 cm, so as to ensure the synchronization between the moving distance of the slider and the rotation angle of the rotating slide, and ensure the measurement accuracy.
[0027] Alternatively, if Figure 1 As shown, the seat control system also includes a seat controller 40 and a resistance detection circuit ( Figure 1 each set of sliding rheostats 11 and rails 12 are connected in a resistance detection circuit; a seat controller 40 is connected to the resistance detection circuit for obtaining an electrical signal generated by the resistance detection circuit according to the detected resistance value, and determining the position of the seat 20 according to the electrical signal.
[0028] Specifically, the seat controller 40 can be set to multiple as needed, and set one-to-one at each seat 20. One seat controller 40 is used to control the movement of a corresponding seat 20 in various directions; it can also be set to one as needed, and use one seat controller 40 to control the movement of multiple seats 20 in various directions; it can also be set to multiple as needed, and use one seat controller 40 to control multiple seats 20 in a one-to-many manner. No specific restrictions are made here.
[0029] The resistance detection circuit is arranged at each seat and is connected to each sliding resistor 11 and the slide rail 12. When the slider of the sliding resistor 11 moves with the movement of the seat, the length of the area where the slide rail 12 is connected to the resistance detection circuit changes. Since the movement distance of the seat 20 is linearly related to the change of the detection resistance value, that is, the length of the area where the slide rail 12 is connected to the resistance detection circuit is linearly related to the change of the detection resistance value, the resistance detection circuit can obtain the corresponding electrical signal representing the detection resistance value when the area length changes, and transmit the obtained electrical signal to the seat controller 40, so that the seat controller 40 determines the position of the seat 20 based on the electrical signal.
[0030] It should be noted that the seat controller 40 can utilize a resistance detection loop to continuously collect detection resistance values at multiple moving position points of the seat 20 through a mean filtering method, and take the average value as a basis for determining the moving position of the seat 20 to improve detection accuracy.
[0031] Optionally, the seat controller 40 is further configured to generate a stop movement signal based on the acquired electrical signal, and use the stop movement signal to control the seat 20 to stop moving at a set position.
[0032] Specifically, first, within a certain period of time, if the rate of change of the collected detection resistance value is less than the first set change rate threshold or remains unchanged, the seat controller 40 can determine that the seat 20 has moved to the mechanical stop point under the drive of the seat motor 50. At this time, a stop movement signal can be generated according to the acquired electrical signal representing the detection resistance value, and the seat motor 50 can be controlled to stop working based on the stop movement signal to prevent the occurrence of stalling, which is manifested on the seat 20 as controlling the seat 20 to stop moving at the set position.
[0033] Secondly, if the rate of change of the test resistance value is large and exceeds the second set change rate threshold, it may indicate that the seat 20 has encountered an obstacle during the movement. At this time, the seat controller 40 can also generate a stop movement signal based on the acquired electrical signal representing the detection resistance value, and control the seat motor 50 to stop working based on the stop movement signal, thereby realizing the anti-pinch function of the seat 20.
[0034] Third, due to the corresponding relationship between the moving distance of the slider of the sliding rheostat 11 and the moving distance of the seat 20, the set resistance value of the soft stop position in front of the mechanical stop point of the seat 20 can be obtained in advance through testing. When the seat controller 40 drives the seat 20 to move through the seat motor 50, when it is detected that the seat 20 moves to the soft stop point, that is, when it is detected that the detection resistance value reaches the set resistance value, the seat controller 40 can also generate a stop movement signal based on the acquired electrical signal representing the detection resistance value, and immediately control the seat motor 50 to stop working based on the stop movement signal, thereby effectively preventing mechanical impact of the seat 20 and realizing the setting of the soft stop point of the seat 20.
[0035] Fourth, when the position of the seat 20 is adjusted, the seat controller 40 controls the seat motor 50 to work, drives the seat 20 to move, and obtains the corresponding detection resistance value through the resistance detection circuit in real time. When it is recognized that the size of the detection resistance value is equal to the resistance value corresponding to the target moving position, a stop movement signal can be generated, and the seat motor 50 can be controlled to stop working based on the stop movement signal, thereby realizing the position adjustment function of the seat 20.
[0036] Optionally, the seat controller 40 is further configured to generate a speed control signal based on the acquired electrical signal, and use the speed control signal to control the seat 20 to move at a set speed.
[0037] Specifically, since the moving distance of the slider of the sliding rheostat 11 corresponds to the moving distance of the seat 20, when the seat 20 is moving, PWM (Pulse-Width Modulation) deceleration can be performed at a set distance before the target moving position, that is, a speed control signal is generated based on the acquired electrical signal, and the speed control signal is used to control the seat 20 to move at a set speed. The set speed can be a uniform speed, or it can be set to a variable speed as needed, such as deceleration, and the seat 20 is controlled to stop after reaching the target moving position. When the seat 20 is controlled to decelerate and move to the target moving position, the slow stop function of the seat 20 can be realized. It should be noted that the variable speed can also be set to acceleration as needed, which will not be repeated here.
[0038] Alternatively, if Figure 1 As shown, the seat control system further includes a seat motor 50 ; the seat motor 50 is connected to the seat 20 and the seat controller 40 , respectively, and is used to drive the seat 20 to move relative to the vehicle frame 30 under the control of the seat controller 40 .
[0039] Specifically, the seat motor 50 can be set to multiple as needed to control the movement of different seats 20 respectively, or it can be set to one as needed to control the movement of multiple seats 20 through one seat motor 50, and no specific limitation is made here.
[0040] The embodiment of the utility model further provides a vehicle, which includes a vehicle frame 30 and a seat 20, and also includes the seat control system in any of the above embodiments.
[0041] The vehicle provided by the embodiment of the utility model includes the seat control system in the above embodiment, so the vehicle provided by the embodiment of the utility model also has the beneficial effects described in the above embodiment, which will not be repeated here.
[0042] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0043] Finally, it should be noted that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. A seat control system, characterized in that: The seat control system includes a plurality of sliding position identification components, each of which includes a correspondingly arranged sliding rheostat and a sliding rail; The sliding rheostat in each sliding position identification assembly is fixed on the seat, and the sliding rail in each sliding position identification assembly is fixed on the vehicle frame; The relative position between the sliding rheostat and the corresponding slide rail is used to determine the detection resistance value, wherein, as the seat moves relative to the vehicle frame, the relative position between the sliding rheostat and the slide rail changes, thereby changing the detection resistance value determined by the sliding rheostat and the slide rail.
2. The seat control system according to claim 1, characterized in that: The slide rail in the sliding position identification component is a translation slide rail and / or a rotation slide rail.
3. The seat control system according to claim 2, characterized in that: The slide rail is used to be fixed on the surface of the vehicle frame and to guide the seat to move parallel or rotate along the slide rail; The sliding rheostat is used to be fixed on the surface of the seat, and the sliding piece of the sliding rheostat contacts the resistance area of the slide rail, and is used to change the area length of the resistance area of the slide rail connected to the resistance detection loop as the seat moves.
4. The seat control system according to claim 3, characterized in that: The translation slide rail is in a straight line shape and is arranged between the seat cushion and the vehicle frame, and the plurality of translation slide rails are arranged in different directions; The rotating slide rail is in an arc shape and is arranged between a seat back and a seat cushion, or between the seat cushion and the vehicle frame.
5. The seat control system according to claim 2, characterized in that: The length of the sliding resistor corresponding to the translation rail is equal to the length of the corresponding translation rail.
6. The seat control system according to claim 2, characterized in that: The length of the sliding rheostat corresponding to the translational slide rail is smaller than the length of the corresponding translational slide rail, and the sliding piece of the sliding rheostat moves in proportion to the length of the area where the corresponding translational slide rail is connected to the resistance detection circuit.
7. The seat control system according to claim 2, characterized in that: The sliding piece of the sliding rheostat corresponding to the rotating slide rail moves in proportion to the rotation angle of the rotating slide rail.
8. The seat control system according to claim 1, characterized in that: The seat control system also includes a seat controller and a resistance detection circuit; Each group of the sliding rheostat and the slide rail is connected in the resistance detection loop; The seat controller is connected to the resistance detection circuit, and is used to obtain the electrical signal generated by the resistance detection circuit according to the detection resistance value, and determine the position of the seat according to the electrical signal.
9. The seat control system according to claim 8, characterized in that: The seat controller is further configured to generate a stop movement signal based on the acquired electrical signal, and use the stop movement signal to control the seat to stop moving at a set position.
10. The seat control system according to claim 8, characterized in that: The seat controller is further configured to generate a speed control signal based on the acquired electrical signal, and use the speed control signal to control the seat to move at a set speed.
11. The seat control system according to claim 8, characterized in that: The seat control system also includes a seat motor; The seat motor is connected to the seat and the seat controller respectively, and is used for driving the seat to move relative to the vehicle frame under the control of the seat controller.
12. A vehicle, characterized in that: The vehicle comprises a vehicle frame and a seat, and further comprises a seat control system according to any one of claims 1 to 11.