Zero-gravity seat control method and system

Abstract

The invention specifically discloses a control method and system for a zero-gravity seat, and the method comprises the steps: transmitting a pre-collision triggering signal and pre-collision time to a seat safety controller when a vehicle intelligent driving control system senses that a vehicle will be pre-collided; setting safety positions of different grades for the seat, obtaining the driver form, and determining that the seat returns to the safety position of the corresponding grade according to the driver form; the seat safety controller receives the pre-collision trigger signal and the driver form to determine the seat homing time required for homing the seat from the current position to the safety position; according to the driver form, the pre-collision time and the seat homing time, whether a seat is controlled to be homed through a seat motor or a seat backrest limiting structure is cut off through a firework type triggering device to enable a seat backrest to be rapidly homed is judged. According to the invention, the injury of a driver in an accident can be reduced, and the intelligence and safety of seat control are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seat control, and more specifically, to a control method and system for a zero-gravity seat. Background Art

[0002] With the continuous development of car cockpit technology, drivers have higher demands for seat comfort. Nowadays, car seats are generally electrically adjustable, and the seat back angle and cushion height can be adjusted at will, so that the driver can find the most comfortable sitting position and have a more comfortable experience. However, the most comfortable sitting position does not mean the safest sitting position. When the seat back angle is too large, the distance between the driver's face and the main driver's airbag will be farther. If the seat back angle is too large, the main driver's airbag will not play a normal protective role in the event of a collision. The seat belt will strangle the neck, and the damage to the spine will increase when the body dives, and the risk of serious injury to the driver will rise sharply. At the same time, each driver has different sitting habits. Drivers of different body shapes and ages have different sitting habits. The total adjustment range of the seat back angle is large, but there is only a small range for the safe sitting position seat back angle. In this regard, considering the large angle of the seat back, the driver may be seriously injured in the event of a collision. It is necessary to quickly return the seat to its original position when a collision is about to occur or a collision has occurred, so that the driver's sitting position can be restored to a safe sitting position. Therefore, it is of great significance to control the seat to return to a safe position when a collision has not occurred or has occurred, so as to provide personalized protection for the driver and reduce the damage caused by the accident. Summary of the invention

[0003] The present invention provides a control method and system for a zero-gravity seat, which solves the problem that existing seats cannot provide personalized protection according to drivers of different body shapes before or after a collision, can reduce the damage to the driver in an accident, and increase the intelligence and safety of seat control.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A method for controlling a zero-gravity chair, comprising:

[0006] When the vehicle intelligent driving control system senses that the vehicle will have a pre-collision, it sends a pre-collision trigger signal and pre-collision time to the seat safety controller;

[0007] Setting different levels of safety positions for the seat, obtaining the driver's form, and determining that the seat returns to a corresponding level of safety position according to the driver's form;

[0008] The seat safety controller receives the pre-collision trigger signal and the driver status to determine the seat return time required for the seat to return from the current position to the safety position;

[0009] According to the driver's form, the pre-collision time and the seat return time, it is determined whether the seat return is controlled by a seat motor or a pyrotechnic trigger device is used to shear off the seat back limit structure to quickly return the seat back.

[0010] Preferably, it also includes:

[0011] When the pre-collision time is greater than or equal to the seat return time, the seat safety controller controls the seat motor to return the seat back to a preset safety position with a maximum torque.

[0012] Preferably, it also includes:

[0013] When the pre-collision time is less than the seat return time, the seat safety controller controls the pyrotechnic trigger device to shear and disconnect the seat back limiting structure to quickly return the seat back.

[0014] Preferably, the step of determining the seat to return to a corresponding level of safety position according to the driver's state includes:

[0015] The driver's body shape is determined based on the driver's shape, and then the level corresponding to the seat back restoring to the safe position is determined based on the driver's body shape.

[0016] Preferably, it also includes:

[0017] Depending on the size of the driver, different levels of pyrotechnic trigger devices are ignited to restore the seat back to different levels of safe positions, so that drivers of different sizes can receive personalized protection.

[0018] Preferably, the ignition of different levels of pyrotechnic triggering devices to restore the seat back to different levels of safe positions includes:

[0019] A three-level pyrotechnic trigger is provided, and the first, second and third level corresponding pyrotechnic triggers are ignited correspondingly according to the size of the driver from small to large, so that the seat back is in a safety position of the corresponding level.

[0020] Preferably, it also includes:

[0021] In the event of a collision, the airbag controller sends a PWM wave to the seat safety controller to trigger the pyrotechnic trigger device to ignite the seat back limit structure, so that the seat back quickly returns to its original position.

[0022] Preferably, it also includes:

[0023] The distance between the driver's face and the vehicle steering wheel is obtained, and the seat back angles corresponding to different preset safety sitting postures in the safety position are calculated.

[0024] Preferably, it also includes:

[0025] The seat back angle corresponding to the driver's safe sitting posture is determined according to the driver's posture, and the detonation level is further determined according to the seat back angle to restore the seat to a safe sitting posture.

[0026] The present invention also provides a control system for a zero-gravity seat, using the above control method, comprising: a seat safety controller, a seat motor, a pyrotechnic trigger device, an in-cabin occupant capture camera, an intelligent driving control system, and an airbag controller;

[0027] The seat safety controller is respectively connected to the seat motor, the pyrotechnic trigger device, the cabin occupant capture camera, the intelligent driving control system and the airbag controller by signal;

[0028] The seat safety controller collects the driver's form according to the occupant capture camera in the cockpit, and then determines the driver's body shape and the distance between the driver's face and the vehicle steering wheel according to the driver's form;

[0029] The seat safety controller controls the seat motor or the pyrotechnic trigger device to quickly return the seat back to a safe position according to the pre-collision trigger signal sent by the intelligent driving control system;

[0030] The seat safety controller also triggers the pyrotechnic trigger device to ignite the seat back limit structure according to the PWM wave sent by the airbag controller during a collision, so that the seat back quickly returns to its original position.

[0031] The present invention provides a control method and system for a zero-gravity seat, wherein a seat safety controller controls the seat motor or a pyrotechnic trigger device to return the seat to a safe position according to a pre-collision trigger signal sent by an intelligent driving control system and the driver's form. This solves the problem that existing seats cannot provide personalized protection for drivers of different body shapes before or after a collision, reduces driver injuries in accidents, and increases the intelligence and safety of seat control. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below.

[0033] Figure 1 It is a schematic diagram of a control method and system of a zero-gravity chair provided by the present invention.

[0034] Figure 2 It is a schematic diagram of the control logic of a zero-gravity chair provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to enable persons skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0036] In view of the problem that current vehicle seats cannot provide personalized protection according to drivers of different body sizes before or before a collision occurs, the present invention provides a control method and system for a zero-gravity seat, which solves the problem that existing seats cannot provide personalized protection according to drivers of different body sizes before or after a collision occurs, can reduce driver injuries in accidents, and increase the intelligence and safety of seat control.

[0037] like Figure 1 and Figure 2 As shown, a control method of a zero-gravity chair comprises:

[0038] S1: When the vehicle intelligent driving control system senses that the vehicle will have a pre-collision, it sends a pre-collision trigger signal and pre-collision time to the seat safety controller.

[0039] S2: setting different levels of safety positions for the seat, obtaining the driver's state, and determining that the seat returns to a corresponding level of safety position according to the driver's state.

[0040] S3: The seat safety controller receives the pre-collision trigger signal and the driver status to determine the seat return time required for the seat to return from the current position to the safe position.

[0041] S4: Determine, based on the driver's form, the pre-collision time and the seat return time, whether to control the seat return by the seat motor or to quickly return the seat back by shearing off the seat back limit structure through a pyrotechnic trigger device.

[0042] Specifically, the driving control system ADAS collects the vehicle's operating status and surrounding obstacles, and pre-judges that the vehicle will have a pre-collision, and calculates the pre-collision time T1, that is, the vehicle will collide after T1 seconds. Then send a pre-collision trigger signal to the seat safety controller, and the seat safety controller calculates the fastest seat return time T2 required for the seat to return from the current position to the safe position. Different levels of safety positions are set for the seat, and the driver's form is collected by the passenger capture camera in the cockpit. The seat safety controller determines the seat to return to the corresponding level of safety position according to the driver's form. The seat safety controller FUS receives the pre-collision time, driver's form and seat return time sent by the intelligent driving control system, and determines whether to control the seat return through the seat motor, or to cut off the seat back limit structure through the pyrotechnic trigger device to quickly return the seat back. This method can provide personalized protection according to drivers of different body types when the collision has not occurred or has occurred, which can reduce the driver's injury in the accident and increase the intelligence and safety of seat control.

[0043] Furthermore, the method further includes: when the pre-collision time is greater than or equal to the seat return time, the seat safety controller controls the seat motor to return the seat back to a preset safety position with a maximum torque.

[0044] The method further includes: when the pre-collision time is less than the seat return time, the seat safety controller controls the pyrotechnic trigger device to shear and disconnect the seat back limiting structure so that the seat back quickly returns to its original position.

[0045] In actual applications, when the pre-collision time is long, the seat motor may be used to drive the seat back to return to a safe position. When the pre-collision time is short, a pyrotechnic trigger device may be ignited to shear and disconnect the seat back limit structure, allowing the seat back to quickly return to the corresponding safe position.

[0046] Further, the step of determining the seat to return to a corresponding level of safety position according to the driver's state includes:

[0047] The driver's body shape is determined based on the driver's shape, and then the level corresponding to the seat back restoring to the safe position is determined based on the driver's body shape.

[0048] The method further comprises: according to drivers of different body sizes, igniting different levels of pyrotechnic triggering devices to restore the seat back to different levels of safe positions, so that drivers of different body sizes can obtain personalized protection.

[0049] Furthermore, the pyrotechnic triggering devices of different levels are detonated to restore the seat back to different levels of safe positions, including:

[0050] A three-level pyrotechnic trigger is provided, and the first, second and third level corresponding pyrotechnic triggers are ignited correspondingly according to the size of the driver from small to large, so that the seat back is in a safety position of the corresponding level.

[0051] The method further includes: when a collision occurs, the airbag controller sends a PWM wave to the seat safety controller to trigger a pyrotechnic trigger device to ignite the seat back limit structure, so that the seat back quickly returns to its original position.

[0052] The method also includes: obtaining the distance between the driver's face and the vehicle steering wheel, and calculating the seat back angles corresponding to different preset safety sitting postures in the safety position.

[0053] The method also includes: determining the seat back angle corresponding to the driver's safe sitting posture according to the driver's posture, and then determining the detonation level according to the seat back angle to restore the seat to a safe sitting posture.

[0054] It can be seen that the present invention provides a control method for a zero-gravity seat, in which the seat safety controller controls the seat motor or pyrotechnic trigger device to return the seat to a safe position according to the pre-collision trigger signal sent by the intelligent driving control system and the driver's form. This solves the problem that existing seats cannot provide personalized protection for drivers of different body shapes before or after a collision, can reduce the driver's injury in an accident, and increase the intelligence and safety of seat control.

[0055] Correspondingly, the present invention also provides a control system for a zero-gravity seat, using the above control method, including: a seat safety controller, a seat motor, a pyrotechnic trigger device, an in-cabin occupant capture camera, an intelligent driving control system, and an airbag controller. The seat safety controller is respectively connected to the seat motor, the pyrotechnic trigger device, the in-cabin occupant capture camera, the intelligent driving control system, and the airbag controller by signal. The seat safety controller collects the driver's form according to the in-cabin occupant capture camera, and then determines the driver's body shape and the distance between the driver's face and the vehicle steering wheel according to the driver's form. The seat safety controller controls the seat motor or the pyrotechnic trigger device according to the pre-collision trigger signal sent by the intelligent driving control system to quickly return the seat back to a safe position. The seat safety controller also triggers the pyrotechnic trigger device to ignite the seat back limit structure according to the PWM wave sent by the airbag controller during a collision, so that the seat back quickly returns to its position.

[0056] In actual applications, the cabin occupant capture camera TOF detects the driver type and determines in advance whether to detonate the primary, secondary, or tertiary trigger device when a collision occurs and the seat safety controller FUS needs to detonate the pyrotechnic trigger. The seat safety controller FUS detonates different levels of pyrotechnic trigger devices according to the different body sizes of drivers to restore the seat back to different levels of safe positions, so that drivers of different body sizes have certain protection scenarios before and during an accident and get the maximum protection.

[0057] It can be seen that the present invention provides a control system for a zero-gravity seat, which controls the seat to return to a safe position through a seat safety controller according to a pre-collision trigger signal sent by an intelligent driving control system and the driver's form, and determines the seat motor or pyrotechnic trigger device. This solves the problem that existing seats cannot provide personalized protection for drivers of different body shapes before or after a collision, can reduce driver injuries in accidents, and increase the intelligence and safety of seat control.

[0058] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A method for controlling a zero-gravity chair, characterized in that: include: When the vehicle intelligent driving control system senses that the vehicle will have a pre-collision, it sends a pre-collision trigger signal and pre-collision time to the seat safety controller; Setting different levels of safety positions for the seat, obtaining the driver's state, and determining that the seat returns to a corresponding level of safety position according to the driver's state; The seat safety controller receives the pre-collision trigger signal and the driver status to determine the seat return time required for the seat to return from the current position to the safety position; According to the driver's form, the pre-collision time and the seat return time, it is determined whether the seat return is controlled by a seat motor or a pyrotechnic trigger device is used to shear off the seat back limit structure to quickly return the seat back.

2. The control method of the zero-gravity chair according to claim 1, characterized in that: Also includes: When the pre-collision time is greater than or equal to the seat return time, the seat safety controller controls the seat motor to return the seat back to a preset safety position with a maximum torque.

3. The control method of the zero-gravity chair according to claim 2, characterized in that: Also includes: When the pre-collision time is less than the seat return time, the seat safety controller controls the pyrotechnic trigger device to shear and disconnect the seat back limiting structure to quickly return the seat back.

4. The control method of the zero-gravity chair according to claim 3, characterized in that: The step of determining, according to the driver's state, that the seat returns to a safety position of a corresponding level comprises: The driver's body shape is determined based on the driver's shape, and then the level corresponding to the seat back restoring to the safe position is determined based on the driver's body shape.

5. The control method of the zero-gravity chair according to claim 4, characterized in that: Also includes: Depending on the size of the driver, different levels of pyrotechnic trigger devices are ignited to restore the seat back to different levels of safe positions, so that drivers of different sizes can receive personalized protection.

6. The method for controlling a zero-gravity chair according to claim 5, characterized in that: The pyrotechnic trigger devices of different levels are detonated to restore the seat back to different levels of safe positions, including: A three-level pyrotechnic trigger is provided, and the first, second and third level corresponding pyrotechnic triggers are ignited correspondingly according to the size of the driver from small to large, so that the seat back is in a safety position of the corresponding level.

7. The method for controlling a zero-gravity chair according to claim 6, characterized in that: Also includes: In the event of a collision, the airbag controller sends a PWM wave to the seat safety controller to trigger the pyrotechnic trigger device to ignite the seat back limit structure, so that the seat back quickly returns to its original position.

8. The method for controlling a zero-gravity chair according to claim 7, characterized in that: Also includes: The distance between the driver's face and the vehicle steering wheel is obtained, and the seat back angles corresponding to different preset safety sitting postures in the safety position are calculated.

9. The method for controlling a zero-gravity chair according to claim 8, characterized in that: Also includes: The seat back angle corresponding to the driver's safe sitting posture is determined according to the driver's posture, and then the detonation level is determined according to the seat back angle to restore the seat to a safe sitting posture.

10. A control system for a zero-gravity chair, using the control method according to any one of claims 1 to 9, characterized in that: include: Seat safety controller, seat motor, pyrotechnic trigger, in-cabin occupant capture camera, intelligent driving control system and airbag controller; The seat safety controller is respectively connected to the seat motor, the pyrotechnic trigger device, the cabin occupant capture camera, the intelligent driving control system and the airbag controller by signal; The seat safety controller collects the driver's form according to the occupant capture camera in the cockpit, and then determines the driver's body shape and the distance between the driver's face and the vehicle steering wheel according to the driver's form; The seat safety controller controls the seat motor or the pyrotechnic trigger device to quickly return the seat back to a safe position according to the pre-collision trigger signal sent by the intelligent driving control system; The seat safety controller also triggers the pyrotechnic trigger device to ignite the seat back limit structure according to the PWM wave sent by the airbag controller during a collision, so that the seat back quickly returns to its original position.

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