Electric seat safety protection device and control method thereof

Abstract

The invention discloses an electric seat safety protection device and a control method thereof, and relates to the technical field of automobile parts. The control method of the electric seat safety protection device comprises the following steps that a shell and an automobile body bottom cabin are fixed, a copper rod is in flexible connection with the shell, and collision force is obtained based on the relative acceleration of the copper rod and the automobile body bottom cabin and the mass of the copper rod; the signal line outputs a safety signal to an electric seat control system based on comparison between the collision force and a preset threshold value; if the collision force is larger than the preset threshold value, a safety signal is disconnected; by disconnecting the safety signal, the seat can be automatically locked when a collision occurs, so that a passenger can be effectively prevented from being subjected to additional injury due to the movement of the seat.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and particularly to an electric seat safety protection device and its control method. Background Art

[0002] With the development of the automotive industry, electric seats are increasingly widely used in automobiles. Electric seats can be adjusted in multiple directions, such as forward and backward, up and down, backrest angle, and lumbar support, etc., through buttons or control panels, and the operation is simple.

[0003] However, when a vehicle collides, if the electric seat is in the unlocked state of the locking device for adjustment and movement, it may cause additional harm to passengers. Therefore, a device that can automatically lock the seat during a collision to protect the safety of passengers is needed. Summary of the Invention

[0004] To solve the above problems, this application discloses a control method for an electric seat safety protection device. By real-time monitoring the state of the electric seat and automatically locking the seat during a collision, it can effectively prevent additional harm suffered by passengers due to seat movement; at the same time, a corresponding electric seat safety protection device is proposed to implement the control method of the electric seat safety protection device in different situations.

[0005] The first technical solution adopted by this application is: providing a control method for an electric seat safety protection device, including:

[0006] The housing is fixed to the vehicle body bottom cabin, the copper rod is flexibly connected to the housing, and the collision force is obtained based on the relative acceleration between the copper rod and the vehicle body bottom cabin and the mass of the copper rod;

[0007] The signal line outputs a safety signal to the electric seat control system based on the comparison between the collision force and a preset threshold; if the collision force is greater than the preset threshold, the safety signal is disconnected.

[0008] Among them, the size of the preset threshold is the frictional force between the copper rod and the copper sheet, and the frictional force calculation formula is as follows:

[0009] F = μ × M × g

[0010] Among them, μ is the friction coefficient between the copper rod and the copper sheet, M is the mass of the copper rod, and g is the acceleration due to gravity.

[0011] Among them, the initial position of the copper rod is the original position; if the collision force is greater than the preset threshold, the copper rod and the copper sheet move relative to each other; the copper rod is restored to the original position based on the reset button.

[0012] Among them, the reset button controls the copper rod to move to the original position and suck in with the copper sheet based on the compression spring.

[0013] Wherein, the method further includes immediately activating a seat locking device after detecting a collision to lock the position of the electric seat and prevent the seat position from moving due to the collision.

[0014] The second technical solution adopted by this application is: providing an electric seat safety protection device, which can apply the control method of the electric seat safety protection device described in any one of the above, including:

[0015] A signal line for feeding back an output signal to the electric seat control system;

[0016] A reset button for resetting the device when the protection device is not damaged after a collision;

[0017] A copper rod that maintains the original acceleration before a collision and separates from a copper sheet after the collision force reaches a threshold value;

[0018] A copper sheet fixed to the housing, attracting and engaging with the copper rod, and separating after the collision force reaches the threshold value;

[0019] A spring combined with the reset button to push the copper rod to move during reset.

[0020] A housing that remains fixed to the vehicle body bottom cabin and moves with the vehicle body during a collision.

[0021] Wherein, the length direction of the copper rod is the first direction, and the extending direction of the reset button is the second direction; the first direction and the second direction are perpendicular to each other.

[0022] The third technical solution adopted by this application is: providing an electronic device, the electronic device includes: a memory and a processor coupled to each other, and the processor is used to execute program instructions stored in the memory to implement the control method of the electric seat safety protection device described in any one of the above.

[0023] The fourth technical solution adopted by this application is: providing a computer-readable storage medium, the computer-readable storage medium stores program data, and the program data can be executed by a processor to implement the control method of the electric seat safety protection device described in any one of the above.

[0024] Due to adopting the above technical solutions, this application has the following at least one beneficial effect compared with the prior art:

[0025] 1. By monitoring the state of the electric seat in real time and automatically locking the seat during a collision, it can effectively prevent additional injuries suffered by passengers due to seat movement.

[0026] 2. In the case of a minor collision, the normal working state can be quickly restored by pressing the reset button, without the need to replace parts, reducing the maintenance cost.

[0027] 3. It is composed of simple and common mechanical components such as copper rods, copper sheets, springs, etc., which are easy to manufacture and maintain, and reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Among them:

[0030] Figure 1 is a schematic flowchart of an embodiment of the control method of the electric seat safety protection device provided by the present application;

[0031] Figure 2 is a schematic structural diagram of an embodiment of the electric seat safety protection device provided by the present application;

[0032] Figure 3 is Figure 2 the external view schematic diagram of the electric seat safety protection device in

[0033] Figure 4 is a schematic structural diagram of an embodiment of the computer device of the present application;

[0034] Figure 5 is a schematic structural diagram of an embodiment of the computer-readable storage medium of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. In addition, it should be noted that for the convenience of description, only the parts related to the present application are shown in the drawings, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0036] The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0037] Referring to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0038] When an existing electric seat encounters a collision, if it is not in a fully locked state, it may move due to inertia, increasing the risk of passenger injury; in view of this, this application provides a control method for an electric seat safety protection device, which can effectively prevent additional injuries suffered by passengers due to seat movement by real-time monitoring the state of the electric seat and automatically locking the seat when a collision occurs, such as Figure 1 as shown Figure 1 is a schematic flowchart of an embodiment of the control method for the electric seat safety protection device provided by this application, including the following steps:

[0039] Step S11: Fix the housing to the vehicle body bottom cabin, and connect the copper rod to the housing in a flexible manner. Obtain the collision force based on the relative acceleration between the copper rod and the vehicle body bottom cabin and the mass of the copper rod; in this embodiment, the electric seat control system obtains the acceleration of the copper rod in real time based on the acceleration sensor; if the acceleration of the copper rod changes, it represents a sudden change in the driving state of the vehicle. For example, when the vehicle collides, it will cause an immediate mutation in the acceleration of the copper rod; the obtained acceleration of the copper rod is the relative acceleration of the copper rod with respect to the vehicle itself.

[0040] Obtaining the collision force based on the acceleration and mass of the copper rod means that the magnitude of the collision force is the product of the acceleration of the copper rod and the mass of the copper rod; the specific calculation formula is as follows:

[0041] F = M × a

[0042] where M is the mass of the copper rod and α is the magnitude of the acceleration.

[0043] It should be clear that the copper rod is accommodated in the housing, and the housing is fixed to the vehicle body; in this embodiment, the housing is installed on the floor of the automotive cockpit. When a vehicle collision occurs, the acceleration generated by the copper rod reflects the intensity of the collision.

[0044] Step S12: The signal line outputs a safety signal to the electric seat control system based on the comparison between the collision force and a preset threshold; if the collision force is greater than the preset threshold, the safety signal is disconnected, indicating that a relatively severe collision has occurred, which may endanger the safety of the passengers. At this time, the system will immediately disconnect the safety signal.

[0045] By accurately measuring the collision force and comparing it with the preset threshold, it is possible to accurately determine whether emergency measures need to be taken to protect the safety of the passengers; this method ensures that the risk of injury is minimized even in the event of a collision; it can make intelligent decisions based on the actual situation rather than adopting a fixed reaction mode. This means that for collisions of different intensities, the system can provide corresponding response measures, neither over-intervening nor ignoring potential dangers.

[0046] In summary, the control method of the electric seat safety protection device includes the following steps: The housing is fixed to the vehicle body bottom cabin, the copper rod is softly connected to the housing, and the collision force is obtained based on the relative acceleration between the copper rod and the vehicle body bottom cabin and the mass of the copper rod; the signal line outputs a safety signal to the electric seat control system based on the comparison between the collision force and a preset threshold; if the collision force is greater than the preset threshold, the safety signal is disconnected; by disconnecting the safety signal, the seat can be automatically locked during a collision, effectively preventing additional injuries suffered by the passengers due to seat movement.

[0047] The magnitude of the collision force is the product of the acceleration of the copper rod and the mass of the copper rod, that is, the magnitude of the collision force is positively correlated with the mass of the copper rod; for the same vehicle in the same collision situation, the impact on the acceleration of the copper rod is the same. If the mass of the copper rod is larger, the collision force is larger, and if the mass of the copper rod is smaller, the collision force is smaller; if the preset threshold is a fixed value, even if the magnitude of the acceleration caused by the vehicle collision remains unchanged, the magnitude of the collision force is affected by the mass of the copper rod, and it is impossible to comprehensively evaluate the collision intensity of the vehicle based on the comparison between the collision force and the preset threshold.

[0048] In view of this, in an embodiment of the present application, the magnitude of the preset threshold is also set to be positively correlated with the mass of the copper rod. Specifically, the magnitude of the preset threshold is the frictional force between the copper rod and the copper sheet, and the frictional force calculation formula is as follows:

[0049] F = μ × M × g

[0050] Among them, μ is the friction coefficient between the copper rod and the copper sheet, M is the mass of the copper rod, and g is the acceleration due to gravity; by making the preset threshold also proportional to the mass of the copper rod, it can be ensured that regardless of how the mass of the copper rod changes, the system can more accurately evaluate the true intensity of the collision. In this way, even under the same acceleration, the difference in the collision force caused by different masses can be accurately identified, thus avoiding misjudgment that may occur due to simply relying on a fixed threshold.

[0051] It should be clear that the magnitude of the frictional force is positively correlated with the friction coefficient between the copper rod and the copper sheet, and the friction coefficients between different materials are different; in other embodiments, the copper rod and the copper sheet can both be made of materials of other materials, and no limitation is imposed on this.

[0052] The initial position of the copper rod is the in-situ position, that is, the copper rod and the copper sheet are in a suction state; at this time, the electric seat is in a freely adjustable state, and the passenger can adjust the seat position as needed. When the vehicle encounters a collision, the system will real-time monitor the acceleration of the copper rod and calculate the corresponding collision force. If the collision force is greater than the preset threshold, the copper rod and the copper sheet will have relative movement, that is, the copper rod and the copper sheet will separate from each other. At the same time, the system will disconnect the safety signal and activate the mechanical locking device of the electric seat to lock the seat position, preventing additional harm to the passenger caused by the seat movement due to the collision.

[0053] Based on the reset button, the copper rod is restored to the in-situ position; for minor collisions or situations where normal operation needs to be restored after a collision, the user can press the reset button to restore the device to the normal working state.

[0054] The reset button is based on a compression spring to control the movement of the copper rod to the in-situ position and suck it to the copper sheet; when the reset button is pressed, the built-in compression spring will be activated, pushing the copper rod to move towards the in-situ position until it sucks to the copper sheet again; using the compression spring as a reset mechanism ensures that the copper rod can return to the in-situ position stably and accurately, enhancing the reliability and stability of the entire system and reducing the possibility of failures.

[0055] Through the reset button, the user is allowed to restore the device to the normal working state by themselves after experiencing a minor collision, without the need for complex tools or professional skills, greatly improving the convenience of use; quickly restoring to normal operation after a minor collision reduces the cost and time consumption brought by maintenance or replacement of parts, and reduces the maintenance cost during long-term use.

[0056] In one embodiment, the control method of the electric seat safety protection device further includes immediately starting the seat locking device after detecting a collision to lock the position of the electric seat to prevent the seat position from moving due to the collision; by immediately starting the motor mechanical lock when detecting a severe collision, it can effectively avoid the seat from moving accidentally due to inertia or external impact, thereby reducing the risk of secondary injury to the passenger and providing immediate safety protection.

[0057] The present application also provides an electric seat safety protection device, which can apply the control method of the electric seat safety protection device described in any of the above embodiments, such as Figure 2 shown in Figure 2 is a schematic structural diagram of an embodiment of the electric seat safety protection device provided by the present application, including the following structures:

[0058] A signal line for feeding back an output signal to the electric seat control system;

[0059] A reset button for resetting the device when the protection device is not damaged after a collision;

[0060] A copper rod that maintains the original acceleration before a collision and separates from a copper sheet after the collision force reaches a threshold value;

[0061] A copper sheet fixed on the housing, which is attracted to the copper rod and separates after the collision force reaches the threshold value;

[0062] A spring combined with the reset button to push the copper rod to move when resetting.

[0063] A housing that is fixed to the vehicle body bottom cabin and moves together with the vehicle body during a collision..

[0064] As Figure 3 shown in Figure 3 is Figure 2 the external view schematic diagram of the electric seat safety protection device in , a fixing component is provided on the housing, and the electric seat safety protection device is fixed to the bottom plate of the vehicle cockpit based on the fixing component; the installation direction of the housing is consistent with the X-axis direction of the vehicle body.

[0065] The following details the usage status of the electric seat safety protection device:

[0066] In a safe state, the reset button is in place, the copper rod and the copper sheet are attracted, and after being powered on, an output signal is fed back to the electric seat control system through the signal line, and the motor mechanical lock is closed. When the electric seat is moving and suddenly a front-end collision occurs, due to the resistance of the vehicle being suddenly hit at the front end, the seat will move forward, and at the same time the copper rod will move to the left. On the contrary, when a rear-end collision occurs, due to the thrust of the vehicle being suddenly hit at the rear end, the seat will move backward, and at the same time the copper rod will move to the right. According to the direction of the collision acceleration and the magnitude of the force, the friction force between the copper sheet and the copper rod can be calculated, and corresponding upper and lower limit values can be set. When a collision occurs and the copper rod and the copper sheet are not attracted, the safety signal output is disconnected, the motor mechanical lock is opened, and the seat is locked to protect the safety of the occupants. And, within the limit of a minor collision, when the copper sheet and the copper rod are separated, the reset button can be pressed simultaneously, so that the copper rod moves towards the middle position under the force of the spring and is attracted to the copper sheet again, restoring to the safe state.

[0067] Among them, the length direction of the copper rod is the first direction, and the extending direction of the reset button is the second direction; the first direction and the second direction are perpendicular to each other; in this embodiment, the first direction is the front-back direction, and the second direction is the horizontal direction; in other embodiments, the first direction and the second direction can be selected otherwise, and no limitation is imposed thereon; by arranging the length direction of the copper rod perpendicular to the extending direction of the reset button, a more compact design can be achieved within a limited space, which not only saves space but also does not affect the function of each component.

[0068] For the above embodiment, the present application provides a computer device. Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of an embodiment of the computer device of the present application. The computer device includes a memory and a processor. Among them, the memory and the processor are coupled to each other. Program data is stored in the memory, and the processor is configured to execute the program data to implement the steps of any one of the embodiments of the control method of the above-mentioned electric seat safety protection device.

[0069] In this embodiment, the processor may also be referred to as a CPU (Central Processing Unit, central processing unit). The processor may be an integrated circuit chip with signal processing capabilities. The processor may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0070] For the method of the above embodiment, it can be implemented in the form of a computer program. Therefore, the present application proposes a computer-readable storage medium. Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of an embodiment of the computer-readable storage medium of the present application. Program data that can be run by the processor is stored in the computer-readable storage medium, and the program data can be executed by the processor to implement the steps of any one of the embodiments of the control method of the above-mentioned electric seat safety protection device.

[0071] The computer-readable storage medium of this embodiment may be a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc, etc., which can store program data, or it may also be a server storing the program data. The server can send the stored program data to other devices for running, or it can also run the stored program data by itself.

[0072] In several embodiments provided by the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0073] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0074] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0075] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A control method for an electric seat safety protection device, characterized in that, Including: The housing is fixed to the vehicle body bottom cabin, the copper rod is soft-connected to the housing, and the collision force is obtained based on the relative acceleration between the copper rod and the vehicle body bottom cabin and the mass of the copper rod; The signal line outputs a safety signal to the electric seat control system based on the comparison between the collision force and a preset threshold; If the collision force is greater than the preset threshold, the safety signal is disconnected.

2. The control method of the electric seat safety protection device according to claim 1, characterized in that, The size of the preset threshold is the frictional force between the copper rod and the copper sheet, and the frictional force calculation formula is as follows: F = μ×M×G Wherein, μ is the friction coefficient between the copper rod and the copper sheet, M is the mass of the copper rod, and g is the acceleration due to gravity.

3. The control method of the electric seat safety protection device according to claim 2, characterized in that, The initial position of the copper rod is the original position; if the collision force is greater than the preset threshold, relative movement occurs between the copper rod and the copper sheet; the copper rod is restored to the original position based on the reset button.

4. The control method of the electric seat safety protection device according to claim 3, characterized in that The reset button controls the movement of the copper rod to the original position and engages with the copper sheet based on the compression spring.

5. The control method of the electric seat safety protection device according to claim 4, characterized in that, The method further includes immediately starting a seat locking device after detecting a collision to lock the position of the electric seat to prevent the seat position from moving due to the collision.

6. An electric seat safety protection device, characterized in that, Including: A signal line for feedback-outputting a signal to the electric seat control system; A reset button for resetting the device when the protection device is not damaged after a collision; A copper rod that maintains the original acceleration before a collision and separates from the copper sheet after the collision force reaches the threshold; A copper sheet fixed to the housing, engaging with the copper rod, and separating after the collision force reaches the threshold; A spring combined with the reset button to push the copper rod to move during reset; A housing fixed to the vehicle body bottom cabin and moving together with the vehicle body during a collision.

7. The electric seat safety protection device according to claim 6, characterized in that, The length direction of the copper rod is the first direction, and the extending direction of the reset button is the second direction; the first direction is perpendicular to the second direction.

8. A computer device, characterized in that, The computer device includes a memory and a processor coupled to each other. The memory stores program data, and the processor is configured to execute the program data to implement the steps of the control method of the electric seat safety protection device according to any one of claims 1-5.

9. A computer-readable storage medium, characterized in that, Program data that can be run by a processor is stored, and the program data is used to implement the steps of the control method of the electric seat safety protection device according to any one of claims 1-5.

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