Knob-type shifter gear position validity determination method and system

Abstract

The application provides a knob-type gear shifter gear effectiveness determination method and system, and relates to the technical field of automobile gear control. The method comprises the following steps: recognizing knob effective position information; obtaining current vehicle gear state, current vehicle speed, and brake signal effectiveness state information; if the current vehicle gear state is D gear, then only when the current vehicle speed is less than a set value and the knob effective position information is the first re-rotation position, the effective gear is set as R gear, otherwise the effective gear is set as N gear; if the current vehicle gear state is R gear, then only when the current vehicle speed is less than a set value and the knob effective position information is the second re-rotation position, the effective gear is set as D gear, otherwise the effective gear is set as N gear. The application can recognize gear position information and dwell time, identify the effective position of the gear, and then determine the effectiveness of the gear according to the effective position of the gear and the vehicle state, and can also determine whether the gear has a stuck fault, thereby improving the safety of gear control.

Description

Technical Field

[0001] This invention belongs to the field of automotive gear control technology, and particularly relates to a method and system for determining the validity of gear positions in a rotary gear shifter. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In the wave of automotive digitalization and intelligence, the gear shift lever has become one of the few physical buttons still retained in vehicles. Rotary gear shifters, due to their advantages such as small footprint, aesthetics, and height adjustment, are seeing increasingly higher adoption rates.

[0004] Gear shifting is related to vehicle driving safety, and with frequent use of the gear shifting mechanism, it can become stuck, affecting the determination of the effectiveness of gear shifts. The ability to accurately determine gear shifts directly affects vehicle driving safety and the effectiveness of vehicle control.

[0005] Chinese invention patent application CN109578574A discloses a control method and system for a rotary gear shifter. The rotary gear shifter includes P, R, N, D, and S gear positions. The method includes the steps of: acquiring a shift control signal from the rotary gear shifter; determining whether the gear position of the rotary gear shifter and the vehicle's current ignition / off state match a preset state; if so, shifting gears according to the shift control signal; otherwise, shifting gears according to the gear position of the rotary gear shifter and the vehicle's current ignition / off state. Shifting gears by rotating the knob instead of a gear lever reduces mechanical friction and makes operation more convenient; switching between P and non-P gears by raising and lowering the knob enhances safety; and real-time monitoring of the vehicle's shifting and ignition / off states ensures driving safety during gear shifting.

[0006] However, the inventors discovered that the above technical solution does not detect and judge the validity of the gear position. When this step is missing, it will directly affect the accuracy of the subsequent judgment logic. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, the present invention provides a method and system for determining the validity of a rotary gear shifter. This method can identify the gear position information and the duration of position dwell, identify the valid position of the gear, and then determine the validity of the gear based on the valid position of the gear and the vehicle status. It can also determine whether the gear has jammed, thereby improving the safety of gear shifting control.

[0008] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0009] The first aspect of the present invention provides a method for determining the validity of a gear position in a rotary gear shifter.

[0010] A method for determining the validity of gear positions in a rotary gear shifter, wherein the rotary gear shifter has multiple knob positions, including a zero position located in the center and a first light rotation position, a second light rotation position, a first heavy rotation position, and a second heavy rotation position symmetrically arranged along the zero position; the method for determining the validity of gear positions in the rotary gear shifter is as follows:

[0011] Identify the valid knob position information of a rotary gear shifter;

[0012] Obtain information on the current vehicle gear status, current vehicle speed, and brake signal validity status;

[0013] If the current vehicle gear is D, the effective gear will only be set to R when the current vehicle speed is less than the set value and the knob is in the first full rotation position; otherwise, the effective gear will be set to N.

[0014] If the current vehicle gear is R, the effective gear will only be set to D when the current vehicle speed is less than the set value and the knob is in the second rotation position; otherwise, the effective gear will be set to N.

[0015] If the current vehicle gear is N, the effective gear will only be set to R when the knob is in the first full turn position and the brake signal is valid; the effective gear will only be set to D when the knob is in the second full turn position and the brake signal is valid; otherwise, the effective gear will remain N.

[0016] A second aspect of the present invention provides a system for determining the validity of a rotary gear shifter.

[0017] A determination system for the gear position validity determination method of a rotary gear shifter as described in the first aspect, comprising:

[0018] The identification module is configured to: identify the valid position information of the rotary gear shifter;

[0019] The acquisition module is configured to acquire information such as the current vehicle gear status, current vehicle speed, and the validity status of the braking signal.

[0020] The judgment module is configured to: if the current vehicle gear is D, then only when the current vehicle speed is less than the set value and the knob effective position information is the first full rotation position, will the effective gear be set to R; otherwise, the effective gear will be set to N.

[0021] If the current vehicle gear is R, the effective gear will only be set to D when the current vehicle speed is less than the set value and the knob is in the second rotation position; otherwise, the effective gear will be set to N.

[0022] If the current vehicle gear is N, the effective gear will only be set to R when the knob is in the first full turn position and the brake signal is valid; the effective gear will only be set to D when the knob is in the second full turn position and the brake signal is valid; otherwise, the effective gear will remain N.

[0023] The above one or more technical solutions have the following beneficial effects:

[0024] This invention provides a method and system for determining the validity of a rotary gear shifter. It can identify gear position information and dwell time, identify the valid position of the gear, and then determine the validity of the gear based on the valid position of the gear and the vehicle status, thereby improving the overall safety of gear shifting control.

[0025] This invention first considers whether the gear position of the rotary gear shifter is valid, and sets the conditions for determining the validity of the gear position. At the same time, in the process of determining the validity of the gear position, the current vehicle speed and the validity status information of the braking signal are taken into account and used as conditions for determining the validity of the gear position, thereby improving the overall safety of vehicle control.

[0026] This invention can also determine whether a gear position has become stuck. It addresses the issue of gear shifting mechanism sticking due to frequent use during the operation of a rotary gear shifter, thereby further improving the effectiveness of gear position recognition during gear shifting.

[0027] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0029] Figure 1 This is a top view of the overall structure of the rotary gear shifter in the first embodiment.

[0030] Figure 2 This is a schematic diagram showing the knob position setting of the rotary gear shifter in the first embodiment.

[0031] Figure 3 This is a schematic diagram of data flow interaction in the first embodiment.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Zero position, 2. First light rotation position, 3. Second light rotation position, 4. First heavy rotation position, 5. Second heavy rotation position, 6. Rotary gear shifter. Detailed Implementation

[0034] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations of the present invention.

[0036] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0037] Meaning:

[0038] EGS: Shift Controller;

[0039] VCU: Vehicle Control Unit;

[0040] ICU: Instrumentation controller.

[0041] Overall concept of the invention:

[0042] The rotary gear shifter provided by this invention is a monostable shift mechanism with four gears (R, N, D, and P) and five shift positions. The shift panel has a backlight function. The shift knob is controlled by a motor to rise and fall. The shift controller (EGS) memorizes the zero position of the shift mechanism. After the vehicle is powered on, the EGS sends the gear status to the VCU based on the shift knob angle. The VCU determines the valid gear and fault status based on the gear position, shift time, and vehicle status. Simultaneously, the VCU sends the valid gear and fault status to the instrument panel for display.

[0043] Example 1

[0044] This embodiment discloses a method for determining the validity of gear positions in a rotary gear shifter.

[0045] A method for determining the validity of gear positions in a rotary gear shifter, such as Figures 1-2 As shown, the rotary gear selector 6 has multiple knob positions, including a zero position 1 located in the center and a first light rotation position 2, a second light rotation position 3, a first heavy rotation position 4, and a second heavy rotation position 5 symmetrically arranged along the zero position; the first light rotation position is closer to the zero position than the first heavy rotation position; the second light rotation position is closer to the zero position than the second heavy rotation position.

[0046] In this embodiment, the first light rotation position, the second light rotation position, the first heavy rotation position, and the second heavy rotation position are respectively set as L1, R1, L2, and R2 positions.

[0047] The method for determining the validity of the gear position on the rotary gear shifter is as follows:

[0048] Identify the valid knob position information of a rotary gear shifter;

[0049] Obtain information on the current vehicle gear status, current vehicle speed, and brake signal validity status;

[0050] If the current vehicle gear is D, the effective gear will only be set to R when the current vehicle speed is less than the set value and the knob is in the first full rotation position; otherwise, the effective gear will be set to N.

[0051] If the current vehicle gear is R, the effective gear will only be set to D when the current vehicle speed is less than the set value and the knob is in the second rotation position; otherwise, the effective gear will be set to N.

[0052] If the current vehicle gear is N, the effective gear will only be set to R when the knob is in the first full turn position and the brake signal is valid; the effective gear will only be set to D when the knob is in the second full turn position and the brake signal is valid; otherwise, the effective gear will remain N.

[0053] This embodiment first considers whether the rotary gear shifter gear position is valid and limits the validity of the rotary gear shifter gear position. At the same time, in the process of determining the validity of the gear position, the influence of the current vehicle speed during the gear shift is considered. The current vehicle speed and the validity status information of the braking signal are considered at the same time and used as conditions for determining the validity of the gear position, thereby improving the overall safety of vehicle control.

[0054] Furthermore, this also includes: if the current vehicle gear is in P gear:

[0055] The effective position information of the knob is the second light rotation position or the first light rotation position. At this time, if the brake signal is invalid, the effective gear is set to P gear; otherwise, the effective gear is set to N gear.

[0056] The effective position information of the knob is the second rotation position. At this time, if the brake signal is invalid, the effective gear is set to P gear; otherwise, the effective gear is set to D gear.

[0057] The effective position information of the knob is the first rotation position. At this time, if the brake signal is invalid, the effective gear is set to P gear; otherwise, the effective gear is set to R gear.

[0058] In this embodiment, when determining the validity of a gear position, the EGS determines the valid position of the gear based on the gear position and the duration of the position stay, and the VCU determines the validity of D, R, and N gears based on the valid gear position information sent by the EGS and the vehicle status.

[0059] The above process is specifically described as follows:

[0060] (1) When the current gear is N, if the gear position information received by the VCU is L1, the VCU sets the effective gear to N.

[0061] (2) When the current gear is N, if the gear position information received by VCU is L2, and at the same time, VCU detects that the braking signal is valid, VCU sets the valid gear to R.

[0062] (3) When the current gear is N, if the gear position information received by VCU is R1, VCU sets the effective gear to N.

[0063] (4) When the current gear is N, if the gear position information received by VCU is R2, and at the same time, VCU detects that the braking signal is valid, VCU sets the valid gear to D.

[0064] (5) When the current gear is D, if the gear position information received by VCU is L1 and the current vehicle speed v > v1, VCU sets the effective gear to N.

[0065] (6) When the current gear is D, if the gear position information received by VCU is L2 and the current vehicle speed v > v1, VCU sets the effective gear to N.

[0066] (7) When the current gear is D, if the gear position information received by VCU is L1 and the current vehicle speed v < v1, VCU sets the effective gear to N.

[0067] (8) When the current gear is D, if the gear position information received by VCU is L2 and the current vehicle speed v < v1, VCU sets the effective gear to R.

[0068] (9) When the current gear is R, if the gear position information received by VCU is R1 and the current vehicle speed v > v1, VCU sets the effective gear to N.

[0069] (10) When the current gear is R, if the gear position information received by VCU is R2 and the current vehicle speed v > v1, VCU sets the effective gear to N.

[0070] (11) When the current gear is R, if the gear position information received by VCU is R1 and the current vehicle speed v < v1, VCU sets the effective gear to N.

[0071] (12) When the current gear is R, if the gear position information received by VCU is R2 and the current vehicle speed v < v1, VCU sets the effective gear to D.

[0072] (13) If the current gear is in P gear, the gear information received by VCU is R1. At this time, if VCU detects that the braking signal is invalid, VCU sets the effective gear to P gear; otherwise, the effective gear is set to N gear.

[0073] (14) If the current gear is in P gear, the gear information received by VCU is R2. At this time, if VCU detects that the braking signal is invalid, VCU sets the effective gear to P gear; otherwise, the effective gear is set to D gear.

[0074] (15) If the current gear is in P gear, the gear information received by VCU is L1. At this time, if VCU detects that the braking signal is invalid, VCU sets the effective gear to P gear; otherwise, the effective gear is set to N gear.

[0075] (16) If the current gear is in P gear, the gear information received by VCU is L2. At this time, if VCU detects that the braking signal is invalid, VCU sets the effective gear to P gear; otherwise, the effective gear is set to R gear.

[0076] Furthermore, by collecting the position information of the gear shift knob and the duration of its position dwell time, the effective position information of the rotary gear shift knob is identified, specifically including:

[0077] If the gear knob is in the first light rotation position and the duration of the position is t≤t1, then the effective position information of the knob is the first light rotation position.

[0078] If the gear knob is in the first full rotation position and the duration of the position stay is t≤t2, then the effective position information of the knob is the first full rotation position.

[0079] If the gear knob is in the second light rotation position and the duration of the position stay is t≤t1, then the effective position information of the knob is the second light rotation position.

[0080] If the gear knob is in the second rotation position and the duration of the position stay is t≤t2, then the effective position information of the knob is the second rotation position.

[0081] Where t2 > t1, and t2 and t1 are both preset times.

[0082] In this embodiment:

[0083] (1) When the gear knob is in position L1 and the position stays for a duration t≤t1, EGS sends valid position information L1 to VCU;

[0084] (2) When the gear knob is in position L2 and the position stays for a duration t≤t2, t2>t1, EGS sends valid position information L1 to VCU;

[0085] (3) When the gear knob is in position R1 and the position stays for a duration t≤t1, EGS sends valid position information R1 to VCU;

[0086] (4) When the gear knob is in position R2 and the position stays for a duration t≤t2, t2>t1, EGS sends valid position information R2 to VCU;

[0087] (5) To ensure safe gear shifting and prevent misoperation, t should be no less than 500ms, i.e. 0.5s < t < t1 < t2.

[0088] Furthermore, it also includes: identifying the position of the gear selector knob on a rotary gear shifter, specifically:

[0089] Each time the vehicle is powered on, the calibrated zero position is read as a reference position.

[0090] Starting from the reference position, define the clockwise rotation direction as the reverse direction and the counterclockwise rotation direction as the positive direction. Pre-store the rotation angles α1 and α2, where α2 > α1.

[0091] Obtain the rotation angle information α of the gear shift knob of the rotary gear shifter:

[0092] When α is determined to be rotating in the positive direction and α > α1 and α < α2, the gear knob position is the first light rotation position.

[0093] When α is determined to be rotating in the opposite direction and α > α1 and α < α2, the gear knob position is the second light rotation position;

[0094] When α is determined to be rotating in the positive direction and α > α2, the gear knob position is the first rotation position.

[0095] When α is determined to be rotating in the opposite direction and α > α2, the gear knob position is the second rotation position.

[0096] In this embodiment, clockwise rotation is defined as the reverse direction and counterclockwise rotation as the forward direction. In other embodiments, clockwise rotation can also be defined as the forward direction and counterclockwise rotation as the reverse direction. In this case, the positions of L1, L2 and R1, R2 will be symmetrically set with respect to the positions in this embodiment.

[0097] In this embodiment:

[0098] EGS calibrates the middle position of the shift mechanism as the zero position, and reads the calibrated zero position as the reference position every time the vehicle is powered on.

[0099] EGS identifies the position of the shift knob through an internal angle sensor. When the left turn is greater than the angle α1, it sends the left slight turn position status to VCU.

[0100] When the leftward rotation angle is greater than α2, EGS sends the leftward rerotation position status to VCU;

[0101] When the right rotation angle is greater than α1, EGS sends the right light rotation position status to VCU; when the right rotation angle is greater than α2, EGS sends the right heavy rotation position status to VCU.

[0102] The value of α1 is 22.5°, and the value of α2 is 35°.

[0103] Furthermore, it also includes determining whether a gear malfunction has occurred based on the position information of the gear knob and the duration of its position stay:

[0104] When the gear selector knob is in the first light rotation position, the second light rotation position, the first heavy rotation position, the second heavy rotation position, or the non-sensitive position, and the duration of the position stay is t1≤t≤t2:

[0105] Get the gear knob position information from the previous moment:

[0106] If the previous moment was the first light rotation position, it is determined that the first light rotation position is stuck, and the N / R indicator lights will flash simultaneously;

[0107] If the previous position was the first rotation position, it is determined that the first rotation position is stuck, and the R gear indicator light will flash.

[0108] If the previous moment was the second light rotation position, it is determined that the second light rotation position is stuck, and the N / D indicator light will flash simultaneously;

[0109] If the previous position was the second rotation position, it is determined that the second rotation position is stuck, and the D gear indicator light will flash.

[0110] If the sensor is stuck, the D / N / R indicator lights will flash simultaneously.

[0111] When the gear selector knob is in the first light turn position, the second light turn position, the first heavy turn position, the second heavy turn position, or the non-sensitive position, and the duration of the position stay is t≥t2, it is determined that the N gear is stuck, and the D / N / R indicator lights will flash simultaneously.

[0112] Also includes:

[0113] When the gear selector knob is in the P position and the duration of the position is t≥t3, it is determined to be in a P-gear stuck state, and the P-gear indicator light will flash, where t1≤t3≤t2.

[0114] Also includes:

[0115] If the rotary gear shifter does not rise when the vehicle is powered on, or stops during the rising process, and the position remains in place for a duration t≥t4, it is determined to be a motor stuck state or a rising fault, and the D / N / R indicator lights will flash simultaneously.

[0116] If the rotary gear shifter does not descend when the vehicle is powered off, or stops during descent and remains in position for a duration t≥t4, it is determined to be a motor jamming state or a descent fault, and the D / N / R indicator lights will flash simultaneously.

[0117] Also includes:

[0118] When there is an upward fault, the control knob shifter is lowered, and after it is lowered to the correct position, it is raised again. If it still cannot reach the normal position after three attempts to rise, then the motor is judged to be stuck.

[0119] When a descent fault occurs, the control knob shifter is raised, and after reaching the correct position, it is lowered again. If the normal position cannot be reached after three descents, the motor is determined to be stuck.

[0120] More specifically:

[0121] EGS determines whether a gear malfunction has occurred based on the gear position status information and the duration of position dwell. Simultaneously, the microcontroller stores the fault information. The following description specifies that the gear shift position dwell time t satisfies the time requirement t4≤t1≤t3≤t2:

[0122] (1) When the position status is L1 or L2 or R1 or R2 or non-inductive position, and the position stay duration t1≤t≤t2, EGS determines that the status is stuck. At the same time, EGS sends the previous position signal. If L1 is stuck, the N / R indicator lights flash simultaneously. If L2 is stuck, the R gear indicator light flashes. If R1 is stuck, the N / D indicator lights flash simultaneously. If R2 is stuck, the D gear indicator light flashes. If the non-inductive position is stuck, the D / N / R indicator lights flash simultaneously.

[0123] (2) When the position status is L1 or L2 or R1 or R2 and the position stay duration t≥t2, EGS determines that the status is stuck. At the same time, EGS sends the N-level signal to VCU, and the D / N / R indicator lights flash simultaneously.

[0124] (3) When the position status is P gear and the position stay duration t≥t3, EGS determines that the status is P gear stuck state. At the same time, EGS sends P gear fault information to VCU and the P gear indicator light flashes.

[0125] (4) When the vehicle is powered on, if the shift knob does not rise and the position remains for a duration t≥t4, the EGS determines that the state is a motor jammed state. At the same time, the EGS sends a motor jammed fault to the VCU, and the D / N / R indicator lights flash simultaneously.

[0126] (5) If the knob stops during the upward movement and the position stays for a duration t≥t4, EGS determines that the state is a motor jamming state. At the same time, EGS sends a motor jamming fault to VCU, and the D / N / R indicator lights flash simultaneously.

[0127] (6) When the vehicle is powered off, the gear shift knob does not descend and remains in position for a duration t≥t4. EGS determines that this state is a motor jamming state. At the same time, EGS sends a motor jamming fault to VCU, and the D / N / R indicator lights flash simultaneously.

[0128] (7) If the knob stops during the descent and the position remains in place for a duration t≥t4, EGS determines that the state is a motor jammed state. At the same time, EGS sends a motor jamming fault to VCU, and the D / N / R indicator lights flash simultaneously.

[0129] (8) After the EGS microcontroller detects the rising fault, it performs a falling operation. After reaching the position, it rises again. If it still cannot reach the normal position after three rising operations, the EGS sends a motor jamming fault to the VCU.

[0130] (9) After the EGS microcontroller detects the descent fault, it performs an ascent operation. After reaching the position, it descends again. If it still cannot reach the normal position after three descents, the EGS sends a motor jamming fault to the VCU.

[0131] (10) If the shift motor is in an upward or downward fault, perform three recovery actions. If it still cannot work normally, the microcontroller will stop performing the lifting operation to prevent the motor from overheating.

[0132] In this embodiment, the VCU sends the gear position information and fault status to the ICM, which then displays the information.

[0133] If the VCU receives a message from the EGS indicating a stuck lifting motor, the VCU will send a message to the ICU indicating a "shifting mechanism failure".

[0134] Example 2

[0135] This embodiment discloses a determination system for determining the validity of gear positions in a rotary gear shifter.

[0136] A determination system for the gear position validity determination method of the rotary gear shifter as described in Embodiment 1, comprising:

[0137] The identification module is configured to: identify the valid position information of the rotary gear shifter;

[0138] The acquisition module is configured to acquire information such as the current vehicle gear status, current vehicle speed, and the validity status of the braking signal.

[0139] The judgment module is configured to: if the current vehicle gear is D, then only when the current vehicle speed is less than the set value and the knob effective position information is the first full rotation position, will the effective gear be set to R; otherwise, the effective gear will be set to N.

[0140] If the current vehicle gear is R, the effective gear will only be set to D when the current vehicle speed is less than the set value and the knob is in the second rotation position; otherwise, the effective gear will be set to N.

[0141] If the current vehicle gear is N, the effective gear will only be set to R when the knob is in the first full turn position and the brake signal is valid; the effective gear will only be set to D when the knob is in the second full turn position and the brake signal is valid; otherwise, the effective gear will remain N.

[0142] Those skilled in the art will understand that the modules or steps of the present invention described above can be implemented using general-purpose computer devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computer device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. The present invention is not limited to any particular combination of hardware and software.

[0143] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A method for determining the validity of gear positions in a rotary gear shifter, characterized in that, The rotary gear shifter has multiple knob positions, including a central zero position and symmetrically arranged first light rotation, second light rotation, first heavy rotation, and second heavy rotation positions along the zero position; the method for determining the gear position validity of the rotary gear shifter is as follows: Identify the valid knob position information of a rotary gear shifter; Obtain information on the current vehicle gear status, current vehicle speed, and brake signal validity status; If the current vehicle gear is D, the effective gear is set to R only when the current vehicle speed is less than the set value and the knob is in the first full turn position; otherwise, the effective gear is set to N. If the current vehicle gear is R, the effective gear is set to D only when the current vehicle speed is less than the set value and the knob is in the second full turn position; otherwise, the effective gear is set to N. If the current vehicle gear is N, the effective gear is set to R only when the knob is in the first full turn position and the brake signal is valid; the effective gear is set to D only when the knob is in the second full turn position and the brake signal is valid; otherwise, the effective gear remains N. It also includes determining whether a gear malfunction has occurred based on the gear knob position information and the duration of position dwell: when the gear knob position is the first light turn position, the second light turn position, the first heavy turn position, the second heavy turn position, or the non-sensitive position, and the position dwell time t1≤t≤t2: Get the gear knob position information from the previous moment: If the previous position was the first light rotation, it is determined that the first light rotation is stuck, and the N / R indicator lights will flash simultaneously; if the previous position was the first heavy rotation, it is determined that the first heavy rotation is stuck, and the R indicator light will flash; if the previous position was the second light rotation, it is determined that the second light rotation is stuck, and the N / D indicator lights will flash simultaneously; if the previous position was the second heavy rotation, it is determined that the second heavy rotation is stuck, and the D indicator light will flash; if the non-sensored position is stuck, the D / N / R indicator lights will flash simultaneously; when the gear knob is in the first light rotation, second light rotation, first heavy rotation, second heavy rotation, or non-sensored position, and the duration of the position stay is t≥t2, it is determined that the N gear is stuck, and the D / N / R indicator lights will flash simultaneously. Also includes: When there is an upward fault, the control knob shifter is lowered, and after it is lowered to the correct position, it is raised again. If it still cannot reach the normal position after three attempts to rise, then the motor is judged to be stuck. When a descent fault occurs, the control knob shifter is raised, and after reaching the correct position, it is lowered again. If the normal position cannot be reached after three descents, the motor is determined to be stuck.

2. The method for determining the validity of a rotary gear shifter as described in claim 1, characterized in that, The first light rotation position is set closer to the zero position than the first heavy rotation position; the second light rotation position is set closer to the zero position than the second heavy rotation position.

3. The method for determining the validity of a rotary gear shifter as described in claim 1, characterized in that, This also includes if the current vehicle gear is in P (Park): The effective position information of the knob is the second light rotation position or the first light rotation position. At this time, if the brake signal is invalid, the effective gear is set to P gear; otherwise, the effective gear is set to N gear. The effective position information of the knob is the second rotation position. At this time, if the brake signal is invalid, the effective gear is set to P gear; otherwise, the effective gear is set to D gear. The effective position information of the knob is the first rotation position. At this time, if the brake signal is invalid, the effective gear is set to P gear; otherwise, the effective gear is set to R gear.

4. The method for determining the validity of a rotary gear shifter as described in claim 1, characterized in that, The effective position information of the rotary gear shifter is identified by collecting the position information of the gear shift knob and the duration of its position dwell time. Specifically, this includes: If the gear knob is in the first light rotation position and the duration of the position is t≤t1, then the effective position information of the knob is the first light rotation position. If the gear knob is in the first full rotation position and the duration of the position stay is t≤t2, then the effective position information of the knob is the first full rotation position. If the gear knob is in the second light rotation position and the duration of the position stay is t≤t1, then the effective position information of the knob is the second light rotation position. If the gear knob is in the second rotation position and the duration of the position stay is t≤t2, then the effective position information of the knob is the second rotation position. Where t2 > t1, and t2 and t1 are both preset times.

5. The method for determining the validity of a rotary gear shifter as described in claim 4, characterized in that, This also includes identifying the position of the gear selector knob on a rotary gear shifter, specifically: Each time the vehicle is powered on, the calibrated zero position is read as a reference position. Starting from the reference position, define the clockwise rotation direction as the reverse direction and the counterclockwise rotation direction as the positive direction. Pre-store the rotation angles α1 and α2, where α2 > α1. Obtain the rotation angle information α of the gear shift knob of the rotary gear shifter: When α is determined to be rotating in the positive direction and α > α1 and α < α2, the gear knob position is the first light rotation position. When α is determined to be rotating in the opposite direction and α > α1 and α < α2, the gear knob position is the second light rotation position; When α is determined to be rotating in the positive direction and α > α2, the gear knob position is the first rotation position. When α is determined to be rotating in the opposite direction and α > α2, the gear knob position is the second rotation position.

6. The method for determining the validity of a rotary gear shifter as described in claim 1, characterized in that, Also includes: When the gear selector knob is in the P position and the duration of the position is t≥t3, it is determined to be in a P-gear stuck state, and the P-gear indicator light will flash, where t1≤t3≤t2.

7. The method for determining the validity of a rotary gear shifter as described in claim 1, characterized in that, Also includes: If the rotary gear shifter does not rise when the vehicle is powered on, or stops during the rising process, and the position remains in place for a duration t≥t4, it is determined to be a motor stuck state or a rising fault, and the D / N / R indicator lights will flash simultaneously. If the rotary gear shifter does not descend when the vehicle is powered off, or stops during descent and remains in position for a duration t≥t4, it is determined to be a motor jamming state or a descent fault, and the D / N / R indicator lights will flash simultaneously.

8. A determination system for the method of determining the validity of a rotary gear shifter as described in any one of claims 1-7, characterized in that: include: The identification module is configured to: identify the valid position information of the rotary gear shifter; The acquisition module is configured to acquire information such as the current vehicle gear status, current vehicle speed, and the validity status of the braking signal. The judgment module is configured to: if the current vehicle gear is D, then only when the current vehicle speed is less than the set value and the knob effective position information is the first full rotation position, will the effective gear be set to R; otherwise, the effective gear will be set to N. If the current vehicle gear is R, the effective gear will only be set to D when the current vehicle speed is less than the set value and the knob is in the second rotation position; otherwise, the effective gear will be set to N. If the current vehicle gear is N, the effective gear will only be set to R when the knob is in the first full turn position and the brake signal is valid; the effective gear will only be set to D when the knob is in the second full turn position and the brake signal is valid; otherwise, the effective gear will remain N.

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