A method and system for adjusting rear seats of a vehicle

Abstract

This invention discloses a method and system for adjusting the rear seats of an automobile. The vehicle controller, based on the acquired current rear seat backrest angle and rear seat position, adjusts the rear seat backrest angle and / or rear seat position by issuing a backrest adjustment command to the current rear seat. During the adjustment process, the rear seat backrest remains in a state of not pressing against the trunk partition. With the rear seat backrest and trunk partition in close contact, the rear seat backrest angle and rear seat position are adjusted in a coordinated manner according to a pre-calibrated relationship curve between the rear seat backrest angle and rear seat position. This invention, by keeping the rear seat backrest and trunk partition in real-time in close contact, can prevent items from falling into the gap between the rear seat backrest and trunk partition.

Description

Technical Field

[0001] The present invention relates to the field of automobile electronic technology, and more particularly to a method and system for adjusting a rear seat of an automobile. Background Art

[0002] In existing vehicles, the posture of the front seats is generally adjustable, while the posture of the rear seats is fixed and cannot be adjusted. Therefore, sitting in the rear seats for a long time can easily make people feel tired. The passengers in the rear seats are often distinguished passengers or passengers with special needs, such as leaders and the elderly. These passengers have a higher demand for rear seats with adjustable postures.

[0003] Therefore, how to provide a method for adjusting the rear seats of a car has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of this, the present invention discloses a method and system for adjusting the rear seats of a vehicle, so as to achieve the adjustment of the rear seats of the vehicle.

[0005] A method for adjusting a rear seat of a vehicle, comprising:

[0006] Get the current rear seat backrest angle and the current rear seat position;

[0007] Based on the current rear seat backrest angle and the current rear seat position, adjusting the rear seat backrest angle and / or the rear seat position by issuing a backrest adjustment instruction to the current rear seat, and during the adjustment process, the rear seat backrest maintains a state of not pressing the trunk partition;

[0008] Wherein, when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in linkage according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat.

[0009] Optionally, when the rear seat backrest is in close contact with the trunk partition, the linkage adjustment space between the angle of the rear seat backrest and the position of the rear seat is a linkage area;

[0010] The adjustable space associated with the angle of the rear seat backrest and the position of the rear seat outside the linkage area is a non-linkage area;

[0011] In the non-linked area, the angle of the rear seat backrest is freely adjustable within a first angle adjustment range relative to the position of the corresponding rear seat, and the position of the rear seat is freely adjustable within a first position adjustment range relative to the angle of the corresponding rear seat backrest along the extension direction of the vehicle body.

[0012] Wherein, within the first angle adjustment range and the first position adjustment range, the rear seat back maintains a state of not squeezing the trunk partition.

[0013] Optionally, the backrest adjustment instruction includes: an angle adjustment command of a rear seat backrest and a position adjustment command of a rear seat;

[0014] In the linkage area, the angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat are combined into a combined adjustment instruction;

[0015] In the non-linkage area, the angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat are executed independently;

[0016] Among them, the angle adjustment command of the rear seat back is used to control the movement of the first motor, and the first motor is used to adjust the angle of the rear seat back. The rear seat position adjustment command is used to control the movement of the second motor, and the second motor is used to adjust the position of the rear seat.

[0017] Optionally, the merge adjustment instruction includes:

[0018] The rear seat backrest angle stops adjusting, and the rear seat position stops adjusting fore and aft; or

[0019] The rear seat backrest is adjusted in a direction with a smaller angle and the rear seat is adjusted towards the rear of the vehicle; or

[0020] The rear seat backrest is adjusted to a larger angle and the rear seat is adjusted towards the rear of the vehicle; or

[0021] The angle of the rear seat backrest is adjusted in the direction of decreasing the angle, and the rear seat position is adjusted in the direction away from the rear of the vehicle.

[0022] Optionally, in the process of adjusting the angle of the rear seat backrest and the position of the rear seat, in the non-linkage area, the angle of the rear seat backrest is adjusted in a direction of increasing the angle through a rear seat backrest angle adjustment command in the backrest adjustment instruction, so that the associated adjustable space of the rear seat backrest angle and the position of the rear seat enters the linkage area from the non-linkage area;

[0023] The rear seat back angle adjustment command and the rear seat position adjustment command are combined into the combined adjustment command, and the combined adjustment command is executed to achieve linkage adjustment of the rear seat back angle and the rear seat position;

[0024] Wherein, the second motor is started before entering the linkage area.

[0025] Optionally, in the process of adjusting the angle of the rear seat backrest and the position of the rear seat, in the linkage area, the angle of the rear seat backrest is adjusted in a direction of decreasing the angle through the combined adjustment instruction, so that the adjustable space associated with the angle of the rear seat backrest and the position of the rear seat enters the non-linkage area from the linkage area;

[0026] converting the combined adjustment instruction into an angle adjustment command for a rear seat backrest, and stopping adjusting the position of the rear seat,

[0027] The rear seat back angle adjustment command adjusts the rear seat back angle in a direction where the angle becomes smaller.

[0028] Optionally, in the linkage area, the angle of the rear seat backrest and the position of the rear seat are adjusted;

[0029] When the position of the rear seat reaches the end closest to the rear of the vehicle, the adjustment process of the angle of the rear seat backrest and the position of the rear seat directly jumps out of the linkage area.

[0030] Optionally, adjusting the position of the rear seat includes:

[0031] The position of the rear seat is adjusted at an adjustable speed by using a proportional-integral control module with the second motor drive PWM duty cycle as a control quantity.

[0032] Optionally, the method of using a proportional-integral control module to adjust the position of the rear seat at an adjustable speed by using the second motor drive PWM duty cycle as a control quantity includes:

[0033] A subtraction operation is performed between the target position of the rear seat after adjustment and the position of the rear seat, wherein when the position of the rear seat is adjusted in a direction away from the rear of the vehicle, the position of the rear seat is subtracted from the target position, or when the position of the rear seat is adjusted in a direction close to the rear of the vehicle, the position of the rear seat is subtracted from the target position;

[0034] When the result of the subtraction operation is a positive value, a positive value is input into the regulator of the proportional-integral control module to increase the speed of adjusting the position of the rear seat; or, when the result of the subtraction operation is a negative value, a negative value is input into the regulator of the proportional-integral control module to reduce the speed of adjusting the position of the rear seat.

[0035] An adjustment system for a rear seat of a vehicle, comprising:

[0036] An acquisition unit, used for acquiring a current rear seat backrest angle and a current rear seat position;

[0037] an adjusting unit, configured to adjust the angle of the rear seat backrest and / or the position of the rear seat by issuing a backrest adjustment instruction to the current rear seat based on the current rear seat backrest angle and the current rear seat position, and the rear seat backrest maintains a state of not pressing the trunk partition during the adjustment process;

[0038] Wherein, when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in linkage according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat.

[0039] As can be seen from the above technical solution, the present invention discloses a method and system for adjusting the rear seat of a car, wherein the vehicle controller obtains the current angle of the rear seat backrest and the current position of the rear seat, and based on the current angle of the rear seat backrest and the current position of the rear seat, the angle of the rear seat backrest and / or the position of the rear seat are adjusted by issuing a backrest adjustment instruction to the current rear seat, and during the adjustment process, the rear seat backrest maintains a state of not squeezing the trunk partition, and when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in linkage according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat. The present invention adjusts the angle of the rear seat backrest and the position of the rear seat in linkage, so that the rear seat backrest and the trunk partition are kept in close contact in real time, so that it is relatively beautiful and can prevent items from falling into the gap between the rear seat backrest and the trunk partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the disclosed drawings without paying creative work.

[0041] Figure 1 A flow chart of a method for adjusting a rear seat of a vehicle disclosed in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the relationship between the front and rear positions of a rear seat and the position of a rear seat backrest disclosed in an embodiment of the present invention;

[0043] Figure 3A schematic diagram of the spatial relationship of the front-rear and rear-row seat backrest linkage adjustment disclosed in an embodiment of the present invention;

[0044] Figure 4 A schematic diagram of the partitioning of a rear seat backrest and a rear seat front and rear combined adjustment space disclosed in an embodiment of the present invention;

[0045] Figure 5 A schematic diagram of a rear seat adjustment process for a vehicle disclosed in an embodiment of the present invention;

[0046] Figure 6 The present invention is a schematic structural diagram of a rear seat adjustment system for a vehicle disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The embodiment of the present invention discloses a method and system for adjusting the rear seat of a car. The vehicle controller obtains the current angle of the rear seat backrest and the current position of the rear seat. Based on the current angle of the rear seat backrest and the current position of the rear seat, the angle of the rear seat backrest and / or the position of the rear seat are adjusted by issuing a backrest adjustment instruction to the current rear seat. During the adjustment process, the rear seat backrest maintains a state of not squeezing the trunk partition. When the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in linkage according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat. The present invention realizes the adjustment of the rear seat by adjusting the rear seat backrest and the rear seat in linkage. Since the rear seat backrest and the trunk partition are kept in close contact in real time during the normal adjustment process, it is relatively beautiful and can prevent objects from falling into the gap between the rear seat backrest and the trunk partition.

[0049] See also Figure 1 , a flow chart of a method for adjusting a rear seat of a vehicle disclosed in an embodiment of the present invention, the method for adjusting the rear seat of a vehicle is applied to a vehicle controller, and the method for adjusting the rear seat of a vehicle comprises:

[0050] Step S101, obtaining the current rear seat backrest angle and the current rear seat position.

[0051] In actual application, a guide rail is fixed below the current rear seat, and the entire guide rail is considered as 100%. The position of the current rear seat determined by the vehicle controller is also the position of the rear seat in the entire guide rail.

[0052] Step S102: Based on the current rear seat backrest angle and the current rear seat position, the rear seat backrest angle and / or the rear seat position are adjusted by issuing a backrest adjustment instruction to the current rear seat, and the rear seat backrest remains in a non-squeezing state against the trunk partition during the adjustment process.

[0053] Among them, the angle adjustment of the rear seat backrest or the adjustment of the current position of the rear seat can be forward adjustment or backward adjustment. Forward adjustment refers to adjustment toward the front of the vehicle, and backward adjustment refers to adjustment toward the rear of the vehicle.

[0054] In this embodiment, when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in conjunction with a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat.

[0055] In this embodiment, the position where each rear seat back is close to the trunk partition corresponds to the front and rear position of a rear seat. Figure 2 As shown, as long as the front-to-rear position of the rear seat (i.e. the angle of the rear seat backrest) and the position relationship of the rear seat can meet Figure 2 The corresponding relationship in the curve shown can achieve the situation where the rear seat backrest is close to the trunk partition.

[0056] See also Figure 3 , a schematic diagram of the spatial relationship between the front-to-back adjustment of the rear seat and the rear seat backrest linkage adjustment disclosed in an embodiment of the present invention, when the rear seat backrest needs to be adjusted backward in position 2, in order to avoid the rear seat backrest squeezing the trunk partition, the rear seat needs to be moved forward as a whole to leave enough space for the rear seat backrest to be adjustable. Based on this, the present invention associates the front-to-back adjustment of the rear seat with the adjustment of the rear seat backrest, and when the rear seat backrest is adjusted backward (forward), the rear seat is adjusted forward (backward) as a whole.

[0057] In summary, the present invention discloses a method for adjusting the rear seats of a car, wherein the vehicle controller obtains the current angle of the rear seat backrest and the current position of the rear seat, and based on the current angle of the rear seat backrest and the current position of the rear seat, the angle of the rear seat backrest and / or the position of the rear seat are adjusted by issuing a backrest adjustment instruction to the current rear seat, and during the adjustment process, the rear seat backrest maintains a state of not squeezing the trunk partition, and when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in linkage according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat. The present invention adjusts the angle of the rear seat backrest and the position of the rear seat in linkage, so that the rear seat backrest and the trunk partition are kept in close contact in real time, so that it is relatively beautiful and can prevent items from falling into the gap between the rear seat backrest and the trunk partition.

[0058] like Figure 3 As shown, when the rear seat is adjusted between position 2 and position 3, the rear seat backrest and the trunk partition are kept in close contact in real time, so as to prevent items from falling into the gap between the rear seat backrest and the trunk partition, and to prevent the rear seat backrest from squeezing the trunk partition. In the existing scheme, the adjustment speed of the front seat is generally fixed. However, if the adjustment speed of the rear seat front and back and the rear seat backrest are not adjustable, the requirement of real-time close contact between the rear seat backrest and the trunk partition cannot be met. Therefore, at least one of the rear seat front and back adjustment speed and the rear seat back adjustment speed is adjustable. Based on this, the present invention adopts a seat with a speed-controllable front and back adjustment motor as the rear seat. In order to ensure that the rear seat backrest is adjusted closely to the trunk partition, each rear seat backrest position needs to be adjusted front and back to achieve different movements of the rear seat backrest. In the entire adjustment process of the rear seat, it needs to be adjusted front and back, and move at a certain speed curve to keep the rear seat backrest and the trunk partition in close contact. In order to avoid the adjustment speed being greatly affected by factors such as power supply voltage and seat load, and to reduce the control complexity at the same time, the present invention adopts the PI controller (proportional integral controller) in the vehicle controller as a virtual function module, takes the front and rear position of the rear seat as the control target, and uses the PWM (Pulse Width Modulation) duty cycle of the motor drive as the control quantity to achieve closed-loop control of the front and rear adjustment speed of the rear seat. This method can effectively reduce the control complexity and simplify the calibration process. Under different power supply voltages and seat loads, the position adjustment accuracy of the rear seat will not be affected by the change in the speed of the rear seat backrest, thereby optimizing the adjustment effect of the rear seat.

[0059] In this embodiment, when the rear seat backrest is in close contact with the trunk partition, the linkage adjustment space of the rear seat backrest angle and the position of the rear seat is the linkage area.

[0060] The adjustable space associated with the position of the rear seat backrest and the rear seat outside the linkage area is a non-linkage area.

[0061] In the non-linked area, the angle of the rear seat backrest is freely adjusted within a first angle adjustment range relative to the position of the corresponding rear seat, and the position of the rear seat is freely adjusted within a first position adjustment range relative to the angle of the corresponding rear seat backrest along the extension direction of the car body.

[0062] Among them, within the first angle adjustment range and the first position adjustment range, all rear seat backs maintain a non-squeezed trunk partition state.

[0063] For details, see Figure 4 , a schematic diagram of a partition of a rear seat backrest and a rear seat front and rear combination adjustment space disclosed in an embodiment of the present invention, wherein the adjustable space associated with the angle of the rear seat backrest and the position of the rear seat is divided into a non-linked area and a linked area according to whether the rear seat backrest is in close contact with the trunk partition. Figure 4 It can be seen from the figure that the non-linkage area is a plane area, a trapezoidal area, and different angles have different front and rear adjustable ranges, and different front and rear positions have different angle adjustable ranges. For example, the first angle adjustment range and the first position adjustment range are the ranges formed by the non-linkage area.

[0064] It should be noted that the angle of the rear seat backrest in the embodiment of the present disclosure refers to the angle between the backrest and the plane where the seat is located. Figure 3 As shown, the opening of the angle is toward the front of the vehicle.

[0065] Combination Figure 3 and Figure 4 When the rear seats are in position 1 and position 4, the rear seat fore-and-aft position and the rear backrest will not squeeze the trunk partition due to the mechanical position. At this time, the rear seat backrest can be freely adjusted forward and backward, and the rear seat can be freely adjusted horizontally. This area is a non-linked area.

[0066] Figure 4 The crushing area is also shown in the figure. In the crushing area, the rear seats and the rear seat backs have been squeezed against the trunk partition. Therefore, under normal circumstances, the position of the rear seats will not reach this area.

[0067] When the rear seats are in position 2 and position 3, the top of the rear seat backrest is in close contact with the trunk partition, and this area is the linkage area.

[0068] In the embodiment of the present invention, the backrest adjustment instruction issued to the current rear seat includes: an angle adjustment command of the rear seat backrest and a position adjustment command of the rear seat;

[0069] In the linkage area, the angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat are combined into a combined adjustment instruction.

[0070] In the linkage area, the angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat are combined into one command, which is recorded as the combined adjustment command. The combination method is shown in Table 1.

[0071] Table 1 is a combined table of the angle adjustment commands for the rear seat backrests and the position adjustment commands for the rear seats in the linkage area.

[0072]

[0073]

[0074] In Table 1, when adjusting the angle of the rear seat backrest, the position of the rear seat follows the front and rear linkage, and similarly, when adjusting the position of the rear seat front and back, the angle of the rear seat backrest follows the linkage. The backrest command in Table 1 is the rear seat backrest angle adjustment command, and the front and rear command is the rear seat position adjustment command.

[0075] It should be noted that the position of the rear seat is adjusted backwards towards the rear of the vehicle. The position of the rear seat is adjusted forwards towards the rear of the vehicle. The angle of the rear seat backrest is adjusted backwards to increase the angle of the rear seat, and the angle of the rear seat backrest is adjusted forwards to decrease the angle of the rear seat.

[0076] As can be seen from Table 1, the combined adjustment instructions include:

[0077] The rear seat backrest angle stops adjusting, and the rear seat position stops adjusting forward and backward; or,

[0078] The angle of the rear seat backrest is adjusted in a direction to decrease (i.e. forward), and the position of the rear seat is adjusted in a direction to move closer to the rear of the vehicle (i.e. backward); or,

[0079] The angle of the rear seat backrest is adjusted in a direction in which the angle becomes larger (i.e., backward), and the position of the rear seat is adjusted in a direction closer to the rear of the vehicle; or,

[0080] The angle of the rear seat backrest is adjusted in a direction to reduce the angle, and the position of the rear seat is adjusted in a direction away from the rear of the vehicle (ie, forward).

[0081] For example, in one embodiment, in the non-linkage area, the angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat are executed independently.

[0082] For example, in one embodiment, the angle adjustment command of the rear seat back is used to control the movement of the first motor, and the first motor is used to adjust the angle of the rear seat back, and the position adjustment command of the rear seat is used to control the movement of the second motor, and the second motor is used to adjust the position of the rear seat.

[0083] During the adjustment of the rear seats, dynamic adjustment from a non-linked area to a linked area can be achieved, and non-dynamic adjustment from a linked area to a non-linked area can also be achieved.

[0084] For example, in one embodiment, during the process of adjusting the angle of the rear seat backrest and the position of the rear seat, in the non-linkage area, the angle of the rear seat backrest is adjusted in a direction of increasing the angle through the rear seat backrest angle adjustment command in the backrest adjustment instruction, so that the adjustable space associated with the angle of the rear seat backrest and the position of the rear seat enters the linkage area from the non-linkage area;

[0085] The angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat are combined into a combined adjustment command, and the combined adjustment command is executed to achieve the linkage adjustment of the angle of the rear seat backrest and the position of the rear seat.

[0086] For example, the second motor is started before entering the linkage area.

[0087] For example, in one embodiment, during the process of adjusting the angle of the rear seat backrest and the position of the rear seat in the linkage area, the angle of the rear seat backrest is adjusted in the direction of decreasing the angle by merging the adjustment instructions so that the adjustable space associated with the angle of the rear seat backrest and the position of the rear seat moves from the linkage area to the non-linkage area; the merged adjustment instructions are converted into an angle adjustment command for the rear seat backrest, and the adjustment of the position of the rear seat is stopped.

[0088] For example, the rear seat back angle adjustment command adjusts the rear seat back angle in a direction in which the angle becomes smaller.

[0089] For example, in one embodiment, when both a command to adjust the rear seat backrest and a command to adjust the rear seat are valid at the same time, if the adjustment direction of the rear seat position and the angle of the rear seat backrest are both consistent with the linkage direction, the combined adjustment instruction is followed. If the adjustment direction of the rear seat position and the angle of the rear seat backrest are inconsistent with the linkage direction, the adjustment is stopped if both the rear seat position and the angle of the rear seat backrest are moved backward, and enters the non-linkage area if both the rear seat position and the angle of the rear seat back are moved forward.

[0090] The non-linked area commands are independent. At this time, the seat forward and backward adjustment commands and the backrest adjustment commands each control the motor movement in their own direction.

[0091] Therefore, the following situations should be noted when transitioning between linkage areas and non-linkage areas:

[0092] 1. When the rear seat position and rear seat back angle are adjusted from the non-linkage area to the linkage area (with Figure 3 Taking the adjustment of the middle position 4 as an example, the linkage area can be entered by adjusting the angle of the rear seat backrest backwards). The backrest adjustment command is switched from only driving the motor corresponding to the angle adjustment of the rear seat backrest to simultaneously driving the motor corresponding to the angle adjustment of the rear seat backrest and the motor corresponding to the position adjustment of the rear seat. Since the starting process of the motor corresponding to the position adjustment of the rear seat will affect the position accuracy, the motor corresponding to the position adjustment of the rear seat is started before entering the linkage area to reserve a buffer zone for position error, thereby avoiding squeezing the trunk partition.

[0093] 2. During the adjustment of the rear seats and rear seat backrests, the rear seats are moved from the linkage area to the non-linkage area (e.g. Figure 3 The rear seat backrest is adjusted forwards in position 2 to enter the non-linked area by adjusting the angle of the rear seat backrest forwards), the rear seat backrest adjustment command is switched from simultaneously driving the motor corresponding to the angle adjustment of the rear seat backrest and the motor corresponding to the position adjustment of the rear seat, to stopping driving the motor corresponding to the position adjustment of the rear seat, and only driving the motor corresponding to the angle adjustment of the rear seat backrest, so that the angle of the rear seat backrest is adjusted forward. In order to avoid the vehicle controller still sending forward and backward adjustment commands to the motor corresponding to the position adjustment of the rear seat when the rear seat is at the rearmost end, it is necessary to preset the rear seat when the rear seat reaches the rearmost end, so that the position adjustment of the rear seat directly jumps out of the linked area, and the situation when the backrest is adjusted backward from the rearmost position of the seat alone to enter the linked area is consistent with the situation at other positions, and the forward and backward adjustment motor is started when the position reaches the buffer zone.

[0094] 3. In order to cope with certain special situations such as mobile phones or other small objects falling behind the seats, the present invention supports multi-button operation. When the forward button in the fore-and-aft adjustment and the forward button in the backrest adjustment are pressed at the same time, the front-and-back position of the rear seats and the angle of the rear seat backrests simultaneously quickly exit the linkage area forward, so that the backrests can leave the trunk partition to pick up dropped objects or clean up debris.

[0095] It should be noted that during the adjustment of the rear seat backrest angle and the rear seat position in the linkage area;

[0096] For example, in some embodiments, when the position of the rear seat reaches the end closest to the rear of the vehicle, the adjustment process of the angle of the rear seat backrest and the position of the rear seat directly jumps out of the linkage area.

[0097] In the present invention, adjusting the position of the rear seat includes: using a proportional-integral control module to adjust the position of the rear seat at an adjustable speed by using the second motor drive PWM duty cycle as a control quantity.

[0098] Specifically, a subtraction operation is performed between the target position after adjustment of the rear seat and the position of the rear seat, wherein, when the position of the rear seat is adjusted away from the rear of the vehicle, the position of the rear seat is subtracted from the target position, or, when the position of the rear seat is adjusted toward the rear of the vehicle, the position of the rear seat is subtracted from the target position.

[0099] When the result of the subtraction operation is a positive value, a positive value is input into the regulator of the proportional-integral control module to increase the speed of adjusting the position of the rear seats, or, when the result of the subtraction operation is a negative value, a negative value is input into the regulator of the proportional-integral control module to reduce the speed of adjusting the position of the rear seats.

[0100] Therefore, in practical applications, the adjustment speed when adjusting the position of the rear seat can also be adjusted according to the front-rear position difference between the position of the rear seat and the target position of the rear seat.

[0101] For example, in one embodiment, the front-to-back position difference of the rear seat position at the current moment and the previous moment is obtained; it is determined whether the front-to-back position difference of the rear seat position at the current moment is increased or decreased relative to the front-to-back position difference at the previous moment. If the front-to-back position difference at the current moment is increased, the speed of adjusting the position of the rear seat is increased.

[0102] If the front-rear position difference at the current moment decreases, the speed of adjusting the position of the rear seats is reduced.

[0103] In actual applications, when the current front-to-back position difference of the rear seat is greater than the previous front-to-back position difference, it indicates that the distance between the rear seat and the target front-to-back position is increasing due to the influence of vehicle load, etc. At this time, the PI controller in the vehicle controller will increase the output power of the vehicle motor by increasing the PWM output, thereby increasing the speed of adjusting the position of the rear seat. Conversely, when the current front-to-back position difference of the rear seat is less than the previous front-to-back position difference, it indicates that the distance between the rear seat and the target front-to-back position is decreasing. At this time, the PI controller in the vehicle controller will reduce the output power of the vehicle motor by reducing the PWM output, thereby reducing the speed of adjusting the position of the rear seat.

[0104] The present invention controls the adjustment speed of the rear seats by comparing in real time the front-rear position difference of the rear seats at the current moment with the front-rear position difference at the previous moment, thereby realizing closed-loop control of the positions of the rear seats.

[0105] In practical applications, it is usually necessary to limit the PWM duty cycle within the effective adjustment range. At this time, the key parameters of the PI regulator need to be adjusted according to the overall response of the vehicle system. The key parameters include: the proportional coefficient P, integral coefficient I and initial integral value R of the PI regulator.

[0106] To further understand the adjustment process of the rear seat of the automobile disclosed in the present invention, see Figure 5 Schematic diagram of the rear seat adjustment process of a car shown in FIG. First, the vehicle controller periodically collects the position of the rear seat (including: the angle of the rear seat backrest and the position of the rear seat). Then, the area where the rear seat is located is judged according to the angle of the rear seat backrest and the position of the rear seat. If the rear seat is in the non-linkage area, the angle of the rear seat backrest and the position of the rear seat are allowed to be adjusted independently. If the rear seat is in the linkage area, the rear seat enters the linkage control logic. If the rear seat is in the linkage area, the vehicle controller will merge the adjustment commands for the angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat sent by the user according to Table 1, and output the merged adjustment command for the rear seat. Then, from the pre-calibrated correspondence between the angle of the rear seat backrest and the position of the rear seat, the position corresponding to the current backrest angle is determined as the target position. Then, the position difference between the target position and the current position is calculated according to the fore-and-aft adjustment direction of the seat (if the position of the entire chair is adjusted forward, the position difference = current position - target position; if the position of the entire chair is adjusted backward, the position difference = target position - current position), and the position difference is used as the input of the proportional-integral controller. The proportional-integral controller will automatically adjust the output parameters according to the position difference, where P is the proportional coefficient, I is the integral coefficient, and ∑ represents the sum of the proportional and integral parts; finally, the output of the proportional-integral controller is converted into a pulse width duty cycle, and the output of the proportional-integral controller is limited within the effective range to control the fore-and-aft adjustment speed of the rear seat body.

[0107] Since the control scheme will be repeatedly executed quickly in the vehicle controller, the position difference between the current position and the target position will also be quickly updated during the seat movement. In the rapid update iteration of the closed-loop control, the position difference will approach zero, and the output of the proportional-integral controller will stabilize near a value. At this time, the speed of adjusting the rear seat forward and backward reaches a steady-state value that is stably coordinated with the backrest adjustment.

[0108] Corresponding to the above method embodiment, the present invention also discloses an adjustment system for rear seats of a vehicle.

[0109] See also Figure 6 , a schematic diagram of a structure of an adjustment system for a rear seat of a vehicle disclosed in an embodiment of the present invention, the system is applied to a vehicle controller, and the system includes:

[0110] An acquisition unit 201 is used to acquire a current rear seat backrest angle and a current rear seat position;

[0111] In actual application, a guide rail is fixed below the current rear seat, and the entire guide rail is considered as 100%. The position of the current rear seat determined by the vehicle controller is also the position of the rear seat in the entire guide rail.

[0112] The adjustment unit 202 is used to adjust the angle of the rear seat backrest and / or the position of the rear seat by issuing a backrest adjustment instruction to the current rear seat based on the current rear seat backrest angle and the current rear seat position, and the rear seat backrest is kept in a state of not pressing the trunk partition during the adjustment process;

[0113] Among them, when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are linked and adjusted according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat.

[0114] The angle adjustment of the rear seat backrest or the current position of the rear seat can be forward adjustment or backward adjustment. Forward adjustment refers to adjustment toward the front of the vehicle, and backward adjustment refers to adjustment toward the rear of the vehicle.

[0115] In this embodiment, when the rear seat backrest is in close contact with the trunk partition (for example, the top of the rear seat backrest is in close contact with the trunk partition), the angle of the rear seat backrest and the current position of the rear seat are adjusted in conjunction with a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat. For details of the relationship curve, see Figure 2 , I will not go into details here.

[0116] In summary, the present invention discloses an adjustment system for the rear seats of a car, wherein the vehicle controller obtains the current angle of the rear seat backrest and the current position of the rear seat, and based on the current angle of the rear seat backrest and the current position of the rear seat, the angle of the rear seat backrest and / or the position of the rear seat are adjusted by issuing a backrest adjustment instruction to the current rear seat, and during the adjustment process, the rear seat backrest maintains a state of not squeezing the trunk partition, and when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in linkage according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat. The present invention adjusts the angle of the rear seat backrest and the position of the rear seat in linkage, so that the rear seat backrest and the trunk partition are kept in close contact in real time, so that it is relatively beautiful and can prevent items from falling into the gap between the rear seat backrest and the trunk partition.

[0117] To further optimize the above embodiment, the regulating system may further include: a speed regulating unit;

[0118] The speed regulating unit is used to adjust the position of the rear seat at an adjustable speed by using a proportional-integral control module with the second motor drive PWM duty cycle as a control quantity.

[0119] In practical applications, the speed regulation unit is specifically used for:

[0120] When the position of the current rear seat is adjusted in a direction away from the rear of the vehicle, the target position is subtracted from the position of the current rear seat, or, when the position of the current rear seat is adjusted in a direction close to the rear of the vehicle, the target position is subtracted from the position of the current rear seat;

[0121] When the result of the subtraction operation is a positive value, a positive value is input into the regulator of the proportional-integral control module to increase the speed of adjusting the position of the rear seats, or, when the result of the subtraction operation is a negative value, a negative value is input into the regulator of the proportional-integral control module to reduce the speed of adjusting the position of the rear seats.

[0122] In this embodiment, the specific working principle of the speed adjustment unit can be found in the corresponding part of the method embodiment, which will not be repeated here.

[0123] It should be noted that the specific working principles of each component in the system embodiment, including: the linkage area between the angle of the rear seat backrest and the current position of the rear seat and the division criteria of the linkage area, dynamic adjustment of the non-linkage area entering the linkage area, non-dynamic adjustment of the linkage area entering the non-linkage area, and merging of adjustment commands, etc., can be found in the corresponding part of the method embodiment and will not be repeated here.

[0124] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0125] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0126] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for adjusting a rear seat of a vehicle, characterized in that: include: Get the current rear seat backrest angle and the current rear seat position; Based on the current rear seat backrest angle and the current rear seat position, adjusting the rear seat backrest angle and / or the rear seat position by issuing a backrest adjustment instruction to the current rear seat, and during the adjustment process, the rear seat backrest maintains a state of not pressing the trunk partition; Wherein, when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in linkage according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat; Wherein, when the rear seat backrest is in close contact with the trunk partition, the linkage adjustment space of the angle of the rear seat backrest and the position of the rear seat is the linkage area; The adjustable space associated with the angle of the rear seat backrest and the position of the rear seat outside the linkage area is a non-linkage area; In the non-linked area, the angle of the rear seat backrest is freely adjustable within a first angle adjustment range relative to the position of the corresponding rear seat, and the position of the rear seat is freely adjustable within a first position adjustment range relative to the angle of the corresponding rear seat backrest along the extension direction of the vehicle body. Wherein, within the first angle adjustment range and the first position adjustment range, the rear seat back maintains a state of not squeezing the trunk partition.

2. The adjustment method according to claim 1, characterized in that: The backrest adjustment instructions include: rear seat backrest angle adjustment instructions and rear seat position adjustment instructions; In the linkage area, the angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat are combined into a combined adjustment instruction; In the non-linkage area, the angle adjustment command of the rear seat backrest and the position adjustment command of the rear seat are executed independently; Among them, the angle adjustment command of the rear seat back is used to control the movement of the first motor, and the first motor is used to adjust the angle of the rear seat back. The rear seat position adjustment command is used to control the movement of the second motor, and the second motor is used to adjust the position of the rear seat.

3. The adjustment method according to claim 2, characterized in that: The combined adjustment instruction includes: The rear seat backrest angle stops adjusting, and the rear seat position stops adjusting fore and aft; or The rear seat backrest is adjusted in a direction with a smaller angle and the rear seat is adjusted towards the rear of the vehicle; or The rear seat backrest is adjusted to a larger angle and the rear seat is adjusted towards the rear of the vehicle; or The angle of the rear seat backrest is adjusted in the direction of decreasing the angle, and the rear seat position is adjusted in the direction away from the rear of the vehicle.

4. The adjustment method according to claim 2, characterized in that: During the process of adjusting the rear seat back angle and the rear seat position, in the non-linked region, the rear seat back angle is adjusted in a direction of increasing the angle by a rear seat back angle adjustment command in the back adjustment instruction, so that the associated adjustable space of the rear seat back angle and the rear seat position enters the linked region from the non-linked region; The rear seat back angle adjustment command and the rear seat position adjustment command are combined into the combined adjustment command, and the combined adjustment command is executed to achieve linkage adjustment of the rear seat back angle and the rear seat position; Wherein, the second motor is started before entering the linkage area.

5. The adjustment method according to claim 2, characterized in that: During the adjustment of the rear seat back angle and the rear seat position, in the linkage area, the rear seat back angle is adjusted in a direction of decreasing the angle by the combined adjustment instruction, so that the adjustable space associated with the rear seat back angle and the rear seat position enters the non-linkage area from the linkage area; converting the combined adjustment instruction into an angle adjustment command for a rear seat backrest, and stopping adjusting the position of the rear seat, The rear seat back angle adjustment command adjusts the rear seat back angle in a direction where the angle becomes smaller.

6. The adjustment method according to claim 2, characterized in that: in the linkage area during adjustment of the angle of the rear seat backrest and the position of the rear seat; When the position of the rear seat reaches the end closest to the rear of the vehicle, the adjustment process of the angle of the rear seat backrest and the position of the rear seat directly jumps out of the linkage area.

7. The adjustment method according to any one of claims 1 to 6, characterized in that: Adjusting the position of the rear seat includes: The position of the rear seat is adjusted at an adjustable speed by using a proportional-integral control module with the second motor drive PWM duty cycle as a control quantity.

8. The adjustment method according to claim 7, characterized in that: The method of using a proportional-integral control module to adjust the position of the rear seat at an adjustable speed by using the second motor drive PWM duty cycle as a control quantity includes: A subtraction operation is performed between the target position of the rear seat after adjustment and the position of the rear seat, wherein when the position of the rear seat is adjusted in a direction away from the rear of the vehicle, the position of the rear seat is subtracted from the target position, or when the position of the rear seat is adjusted in a direction close to the rear of the vehicle, the position of the rear seat is subtracted from the target position; When the result of the subtraction operation is a positive value, a positive value is input into the regulator of the proportional-integral control module to increase the speed of adjusting the position of the rear seat; or, when the result of the subtraction operation is a negative value, a negative value is input into the regulator of the proportional-integral control module to reduce the speed of adjusting the position of the rear seat.

9. An adjustment system for a rear seat of a car, characterized in that: include: An acquisition unit, used for acquiring a current rear seat backrest angle and a current rear seat position; an adjusting unit, configured to adjust the angle of the rear seat backrest and / or the position of the rear seat by issuing a backrest adjustment instruction to the current rear seat based on the current rear seat backrest angle and the current rear seat position, and the rear seat backrest maintains a state of not pressing the trunk partition during the adjustment process; Wherein, when the rear seat backrest is in close contact with the trunk partition, the angle of the rear seat backrest and the position of the rear seat are adjusted in linkage according to a pre-calibrated relationship curve between the angle of the rear seat backrest and the position of the rear seat; Wherein, when the rear seat backrest is in close contact with the trunk partition, the linkage adjustment space of the angle of the rear seat backrest and the position of the rear seat is the linkage area; The adjustable space associated with the angle of the rear seat backrest and the position of the rear seat outside the linkage area is a non-linkage area; In the non-linked area, the angle of the rear seat backrest is freely adjustable within a first angle adjustment range relative to the position of the corresponding rear seat, and the position of the rear seat is freely adjustable within a first position adjustment range relative to the angle of the corresponding rear seat backrest along the extension direction of the vehicle body. Wherein, within the first angle adjustment range and the first position adjustment range, the rear seat back maintains a state of not squeezing the trunk partition.

Images