Anti-pinch control method for steering wheel storage and hiding system

Abstract

The invention discloses an anti-pinch control method of a steering wheel storage and hiding system. The steering wheel storage and hiding system comprises an angle and height adjusting motor of an electric adjusting tubular column and a turning motor of a steering wheel, and an ECU control system outputs control signals to the angle and height adjusting motor and the turning motor to control the position of the steering wheel. Motor abnormity and current abnormity signals are acquired through the abnormal signal acquisition module, and when the abnormal signals are detected, the angle and height adjusting motor is driven, and the overturning motor stops working. The steering wheel storage and hiding system has the advantages that the purpose of anti-pinch monitoring is achieved by monitoring the motor in the steering wheel storage and hiding system, and people are prevented from being pinched by a steering wheel and accidentally injured.

Description

Technical Field

[0001] The invention relates to the field of steering wheel control, and in particular to an anti-pinch control method for a steering wheel storage and hiding system. Background Art

[0002] With the rapid development and popularization of automobile technology, private cars have become an indispensable means of transportation for consumers. In today's society, people's living standards are gradually improving, and there are more and more private cars. They are a means of transportation that people are vying for and are very popular. However, due to the increase in demand, we will also face various new requirements and demands. We need to continuously optimize the performance of various aspects of the car and move forward in a safer and more convenient direction. As the direct carrier for controlling the car, the steering wheel needs to be easy to control, simple and powerful. However, it needs to occupy a certain driving space, which is not conducive to users performing some range actions. Therefore, the storage and hiding of the steering wheel came into being. It can free up driving space and can be fully applied to unmanned driving technology.

[0003] The hidden storage of the steering wheel is generally achieved by adjusting the position of the steering wheel to the limit through the motor, thereby freeing up the space where the steering wheel is located and improving the user experience. Nowadays, when people travel and drive vehicles on a daily basis, the adjustment of the steering wheel is achieved through the four-way adjustment mechanism of the column, but the round volume of the steering wheel will always occupy a certain driving space, making the already small driving space even more stretched. The hidden storage of the steering wheel solves the future user's demand for higher flexible space, and can also improve the customer experience and keep up with the trend of technological development.

[0004] With the development of intelligent driving, electrification and intelligence are applied to vehicles, and the hidden storage and adjustment of steering wheels have gradually matured. The position of the steering wheel can be adjusted manually or even automatically according to user needs. However, the existing technology still cannot meet user requirements for the safety and reliability of its adjustment, such as anti-pinch. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an anti-pinch control method for a steering wheel storage and hiding system, which achieves the purpose of anti-pinch monitoring by monitoring the motor in the steering wheel storage and hiding system to prevent people from being accidentally injured by being pinched by the steering wheel.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an anti-pinch control method for a steering wheel storage and hiding system, wherein the steering wheel storage and hiding system comprises an angle and height adjustment motor of an electric adjustment column and a flip motor of a steering wheel, and an ECU control system outputs control signals to the angle and height adjustment motor and the flip motor respectively to control the position of the steering wheel;

[0007] In the process of controlling the adjustment motor and the reversing motor, the abnormal signal acquisition module collects the abnormal motor and current abnormal signals. When the abnormal signal is detected, the angle and height adjustment motors and the flip motor are driven to stop working to avoid the potential safety hazards caused by people or other objects being clamped during the adjustment process. When the adjustment motor or the reversing motor is running, if it clamps an object, it will be blocked. At this time, the motor will send out an abnormal signal, which can be judged by monitoring the current signal. Therefore, the current of the motor will be abnormal during the blocking process, so anti-pinch monitoring can be achieved based on the abnormal current.

[0008] After the abnormal signal is detected and the system stops working and reaches the set threshold, the angle and height adjustment motors and the flip motor are adjusted in turn to control the forward and backward movement in the direction of movement before the abnormal signal is detected. If the abnormal signal disappears during the forward and backward movement control process, the system continues to run to the set position in the direction of movement before the abnormal signal is detected.

[0009] The state position of the steering wheel corresponding to the user's driving position is pre-set. When the vehicle is in the driving state, the steering wheel is controlled to reach the state position through the angle and height adjustment motor and the steering wheel flip motor.

[0010] When it is detected that the vehicle is in the welcome mode, if it is detected that the user has opened the main driver's door and is in the vehicle, the steering wheel and the electric adjustment column are controlled to be in the upper limit position of the angle, and the seat is controlled to move backward to the limit position; and after it is detected that the user gets in the vehicle and closes the door and the entire vehicle is powered on, the seat, the electric adjustment column and the steering wheel are controlled to adjust to the state position corresponding to the user's driving.

[0011] After detecting that the vehicle is stalled, the steering wheel and the electrically adjustable column are moved to a position that is convenient for getting on and off the vehicle through the angle and height adjustment motor and the flip motor, while the seat is controlled to move backward to the extreme position.

[0012] When the user is resting in the car, the steering wheel hiding function is triggered through the host soft switch or the set hard switch. At this time, after the ECU controller receives the steering wheel hiding function being triggered, it controls the seat and steering wheel to the position corresponding to the rest state.

[0013] When an abnormal signal is detected, the abnormal current of the motor is detected. When the abnormal current exceeds the set threshold and lasts longer than the set time threshold, the anti-pinch function is activated, and the angle and height adjustment motors and flip motors are controlled to stop working and remain stopped.

[0014] When the vehicle is running, the running state of the vehicle is detected, the collision risk of the vehicle is predicted based on the running state, and the steering wheel storage and hiding system of the vehicle is adjusted and controlled based on the predicted collision risk.

[0015] A control module is provided, through which the user actively adjusts the steering wheel position of the vehicle. When the vehicle is in a driving state, the control module is prohibited from being enabled.

[0016] When the vehicle is in driving state, if the vehicle has the automatic driving function and the automatic driving function is started, the control module is allowed to enable work.

[0017] The advantages of the present invention are: the purpose of anti-pinch monitoring is achieved by monitoring the motor in the steering wheel storage and hiding system, preventing people from being accidentally injured by the steering wheel. The linkage of a series of related systems such as wire-controlled steering, personalized seat rotation, and storage and hiding of the steering wheel can achieve a high degree of safety and stability in the steering system when the whole vehicle is running. It improves the safe use experience of electric adjustment for car users; meets the needs of car users for flexible driving space and smart cockpit; the electric adjustment column can be expanded to a variety of scenarios, giving customers a sense of technology, luxury, and a new ecological experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0019] Figure 1 It is a schematic diagram of the anti-pinch system composition of the steering wheel storage and hiding system of the present invention.

[0020] Figure 2 It is a working logic block diagram of the anti-pinch system of the steering wheel storage and hiding system of the present invention;

[0021] Figure 3 For the present invention Figure 2 Function comparison diagram of function numbers 1-5 involved. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0023] This embodiment provides a judgment control strategy for hiding the electric adjustable column and steering wheel, including an anti-pinch control strategy, which needs to be linked with the vehicle domain control, steering system, central processing unit (CPU), instrument, seat system and other systems. According to the needs of the vehicle driver and the convenience and comfort of the electric adjustable column, a reasonable functional logic is formulated, and the human-machine architecture relationship between this linkage system and the user needs to be resolved. It is necessary to consider the application scenarios of the steering wheel storage and hiding, the linkage of related systems, the vehicle operation status, the functional logic and motion envelope of the steering wheel and steering column. The main technologies for the anti-pinch function of the electric adjustable column include flipping the steering wheel, the electric adjustable column, the human-machine system and the ECU control system. The output of the ECU signal is controlled by the soft and hard switches of the human-machine system, and then the adjustment of the electric adjustable pipe section and the movement of the steering wheel are controlled, so as to realize the anti-pinch function of the steering wheel and column.

[0024] The solution of this embodiment needs to include an electric adjustment column, a control unit, an instrument host, and a vehicle domain control. And develop and implement at least the following functions:

[0025] ① Entry and exit function: After the vehicle is turned off, the steering wheel and column will be adjusted to the maximum angle and height, and the seat will be in the rearmost position, making it easier for users to get in the vehicle;

[0026] ② Welcome function: When the vehicle is powered on or ignited, the seat system and steering wheel are restored to the last driving posture or the corresponding ID memory state

[0027] ③Electric adjustment function: The steering wheel and column can be electrically adjusted in angle and height through the vehicle mechanical switch or large screen buttons to maximize the cockpit space and meet the customer's needs for the steering wheel position;

[0028] ④ Speed ​​regulation function: Based on PWM modulation voltage, the central processing unit (CPU) monitors the motor position to determine whether to turn on the PWM modulation voltage to achieve the slow rise and slow fall function.

[0029] ⑤ Self-learning middle position and self-correcting middle position: After the vehicle is powered on and the controller completes self-check, manually adjust the steering wheel, electric adjustment column angle and height to the extreme position. Judge whether it is the extreme position through the motor current value. According to the detected electric adjustment column height and angle extreme position, calculate the middle position and memorize the height adjustment motor, angle adjustment motor extreme position and the corresponding Hall number of the middle position. According to the detected steering wheel flip extreme position, memorize the flip extreme position and the motor Hall number corresponding to the extreme position.

[0030] ⑥ Anti-pinch function: The central processing unit (CPU) monitors the adjustment current value and the motor position to determine whether there is an adjustment abnormality. It can judge the current change value in each cycle. When the current change value exceeds the threshold, it is judged as an adjustment abnormality and the output motor maintains the current.

[0031] ⑦One-button reset mode: One-button reset can be called up by pressing the large-screen button or voice command: the steering energy + column + seat + control system are linked, the seat moves back, and the steering wheel angle and height are reset to the maximum position.

[0032] like Figure 1 As shown, the system architecture involved in the anti-pinch control method of the steering wheel storage and hiding system includes the central processor ECU, the seat system, the electric adjustment column, the folding steering wheel system, and the vehicle-mounted multimedia host, the instrument IHU, the vehicle domain control, etc. Among them, the instrument and the multimedia host are used to interact with the user, obtain the user's setting or adjustment signal, and send an alarm to the user, as well as a system status signal; the seat system is an electric seat, and the front and rear movement of the seat and the angle of the seat back can be adjusted by controlling the motor; the electric adjustment column and the folding steering wheel system are used to control the position of the column and the steering wheel respectively, and the direction of the electric adjustment column and the folding of the steering wheel are achieved through electronic adjustment, so as to achieve the purpose of hiding. The adjustment of the electric adjustment column is actually the angle between the electric adjustment column and the horizontal plane and the position close to the steering wheel. The steering wheel folding refers to the way of folding the steering wheel by the motor to reduce the space where the steering wheel is located, so as to achieve the purpose of folding. This scheme realizes intelligent, automatic, anti-pinch and other functions by designing the control strategy of the steering wheel hiding system, thereby improving the reliability, safety and intelligence of the steering wheel storage and hiding system. The specific scheme is as follows:

[0033] The invention discloses an anti-pinch control method for a steering wheel storage and hiding system. The steering wheel storage and hiding system comprises an angle and height adjustment motor for an electric adjustable column and a flip motor for a steering wheel. The angle and height adjustment motor is used to adjust the angle and height of the electric adjustable column; the flip motor for the steering wheel is used to adjust the flip of the steering wheel; an ECU control system outputs control signals to the angle and height adjustment motor and the flip motor respectively to control the positions of the electric adjustable column and the steering wheel; an abnormal motor and current abnormal signals are collected by an abnormal signal collection module, and when an abnormal signal is detected, the angle and height adjustment motor and the flip motor are driven to stop working.

[0034] In the process of controlling the adjustment motor and the reversing motor, the abnormal motor and current abnormal signals are collected through the abnormal signal acquisition module. When the abnormal signal is detected, the angle and height adjustment motor and the flip motor are driven to stop working to avoid the safety hazard of clamping people or other objects during the adjustment process. When the adjustment motor or the reversing motor is in operation, if it clamps an object, it will be blocked. At this time, the motor will send out an abnormal signal, and it can be judged by monitoring the current signal. Therefore, the current of the motor will be abnormal during the blocking process, so anti-pinch monitoring can be achieved based on the abnormal current. When an abnormal signal is detected, the abnormal current of the motor is detected. When the abnormal current exceeds the set threshold and the duration is greater than the set time threshold, the anti-pinch function is activated, and the control angle and height adjustment motor and the flip motor stop working and maintain. During the motor rotation process, in order to avoid occasional abnormal current signals, the current signals of the motors are monitored in real time during the operation of the regulating motor and the flipping motor. When the current of any of the regulating motor and the flipping motor is greater than the set current threshold and lasts for a set period of time, it is judged that the motor is blocked. At this time, the corresponding steering wheel and the electric adjustment column should be clamped by an object. Therefore, the regulating motor and the flipping motor are controlled to stop working to avoid safety hazards or damage to the motor caused by clamping objects. At the same time, the information that the motor is clamped by an object is alarmed through the instrument or multimedia host system to remind the driver of the anti-pinch state at this time, so that it is convenient to adjust it in time.

[0035] In a preferred embodiment, after the abnormal signal is detected and the motor stops working for a set time threshold, the angle and height adjustment motors and the flip motor are adjusted in sequence to control the forward and backward movement according to the direction of movement before the abnormal signal is detected. If the abnormal signal disappears during the forward and backward movement control process, the motor continues to run to the set position in the direction of movement before the abnormal signal is detected. Since the current of the adjustment motor or the reversing motor is greater than the set current threshold and the duration reaches the set time, the adjustment motor or the reversing motor is controlled to stop working at this time, but if a person or object is clamped, a reminder will be issued through the instrument, etc., and the driver will eliminate this hidden danger at this time, so it cannot be stopped all the time. After the stop working reaches the set threshold time, it is necessary to try whether to restore the state of continuing to work to achieve the purpose of automatic recovery. At this time, when the parking work reaches the set time, such as three seconds or five seconds, the motor is controlled to move an angle or rotate a small distance according to the working state of the adjustment motor and the flip motor before the abnormal signal, and the motor moves a small displacement to drive the corresponding movement of the electric adjustment column and the pay-off drum. At this time, if the current is still detected to be greater than the set current threshold, the control continues. The adjusting motor or flipping motor stops working until it is started again after the time threshold is reached next time, until the motor moves a small displacement to drive the corresponding movement of the electric adjustment column and the wire reel, and the collected current abnormal signal disappears. At this time, there is no abnormal signal, which means that the driver has eliminated the object in the moving position of the steering wheel or the electric adjustment column, and it will not be clamped at this time. Therefore, the adjusting motor and the flipping motor are controlled to continue to run to the set position in the direction of movement before the abnormal signal is detected. This set position is a position set in advance by the user setting or automatically detecting the status mode. For example, when the steering wheel and the electric adjustment column are in the upper limit position for the convenience of users getting on and off the vehicle, the set position is the upper limit position. After the abnormal signal disappears, the operating state of the adjusting motor and the flipping motor is restored.

[0036] The normal position of the steering wheel, the extreme position that needs to be flipped when hidden, and the corresponding motor Hall number of the flip motor are pre-calibrated, and the flip adjustment of the steering wheel from the normal position to the extreme position is realized according to the motor Hall number; similarly, the normal position and the extreme position of the angle and height of the electric control column and the corresponding Hall number are pre-calibrated, and its position information can be set by pre-calibration. When using, the user actively sets the position of the steering wheel suitable for his own driving operation, and then moves from the extreme position or other position to the position suitable for the driver at each start; wherein the state position of the steering wheel corresponding to the driving position of each driver information can be set by means of face, fingerprint, etc. (i.e., the Hall number of the adjustment motor and the flip motor), and the state position of the steering wheel corresponding to the user's driving position is pre-set, and when the vehicle is in the driving state, the steering wheel is controlled to reach the state position by the angle and height adjustment motor and the flip motor of the steering wheel. The driver obtains the driver's identity information through face or fingerprint, and then obtains the pre-set state position data matching the driver's use through the identity information, and then controls the adjustment motor and the flip motor to work through the state position data, so as to adjust the steering wheel and the electric control column to the corresponding position to meet the control adapted to the driver's needs.

[0037] In a preferred embodiment of this embodiment, the steering wheel control function strategies in multiple modes are set to meet different needs, including a welcome mode, a rest and entertainment mode, and an anti-pinch mode, specifically including:

[0038] 1. Welcoming mode:

[0039] The condition for entering the welcome mode is that the vehicle changes from the locked mode to the unlocked mode, which triggers the entry into the welcome mode. After entering the welcome mode, if it is detected that the driver opens the main driving door, it means that the driver has the need to enter the car. At the moment when the door is detected to be opened, the steering wheel and the electric adjustment column are controlled to be at the upper limit position of the angle, and the seat is controlled to move backward to the limit position. The upper limit position refers to the limit position of the steering wheel and the electric adjustment column away from the driver's seat, that is, the steering wheel and the electric adjustment column are moved away from the seat or toward the front of the car and reach the farthest position as the limit position. In this way, the steering wheel, the column and the seat move to the rear of the car, leaving the driver's seat vacant, making it convenient for the driver to get on and off the car.

[0040] After detecting that the user gets on the car and closes the door and the vehicle is powered on, the seat, electric adjustment column and steering wheel are controlled to adjust to the state position corresponding to the user's driving. After the driver gets on the car and detects that the driver closes the driver's side door, the steering wheel state position corresponding to the driving state required by the driver should be restored. At this time, the pre-set position information or the driver's fingerprint or face can be read to obtain the corresponding state position, that is, the position information of the pay-off disk and column required for the driver to use the steering wheel normally. These position information are converted into the Hall number of the motor, and the steering wheel and electric adjustment column are controlled by controlling the Hall number of the adjustment motor and the flip motor to reach the set state position that meets the driver's driving needs. At the same time, the seat is also an electrically controlled seat, and the seat can also be adjusted to a position suitable for the driver to drive the vehicle by automatically matching or pre-setting the seat position according to fingerprint recognition. In this way, when the door is opened to welcome guests, the seat and steering wheel are controlled so that the driver can easily enter the cab, and then after the driver enters the cab and closes the main driving door, the seat and steering wheel are controlled to return to the driving position or initial position.

[0041] Similarly, after detecting that the vehicle is stalled, the steering wheel and the electric adjustment column are moved to a position that is convenient for getting on and off the vehicle through the angle and height adjustment motor and the flip motor. At the same time, the seat is controlled to move backward to the extreme position, making it easier for the driver to get off the vehicle after the vehicle is stalled.

[0042] 2. Rest and entertainment mode

[0043] When the user is resting in the car, the rest and steering wheel hiding function corresponding to the skip mode is triggered by the host soft switch or the set hard switch. At this time, the ECU controller enters the rest and entertainment mode after receiving the triggering of the steering wheel hiding function, and controls the seat and steering wheel to be in the position corresponding to the rest state; in the rest and entertainment mode, the driver generally hopes to have a larger activity space, so the seat is adjusted to the rear of the car at this time, and the steering wheel and steering column are hidden, that is, they are controlled to reach the upper limit and the steering wheel is controlled to flip, so as to vacate the main driving position and facilitate the driver's rest; its control logic is: after the rest and entertainment mode switch is triggered, the whole vehicle is self-checked and controlled, and after the self-check is qualified, the seat memory, signal retrieval, motor position signal and vehicle speed signal and other information are performed to determine whether to execute the hidden control box function, and if so, the steering wheel storage and hiding instruction is executed; the storage and hiding control includes: controlling the column angle to be raised to the upper limit, then controlling the steering wheel to flip to the lower limit, and then controlling the steering wheel angle to be adjusted to the lower limit, the control column to be stored to the lower limit, and finally the seat is synchronously adjusted to the rest state position.

[0044] 3. Anti-pinch mode

[0045] When the steering wheel storage and hiding system is executing normally or not performing the hiding and storage action, if there is a person or other object trapped, the steering wheel and motor position signals will send out abnormal signals. At the same time, the control system detects that the abnormal current exceeds the threshold and the action time exceeds the threshold. The storage and hiding system will only stop the next action and maintain the current state to avoid continued action that may hurt people.

[0046] 4. Accident Mode

[0047] When the vehicle is running, the running state of the vehicle is detected, the collision risk of the vehicle is predicted based on the running state, and the steering wheel storage and hiding system of the vehicle is adjusted and controlled based on the predicted collision risk. Since the steering wheel and the column can be adjusted and set by the driver, but the correct steering wheel position can meet the protection of the driver's head by the airbag after the accident collision, the collision risk of the vehicle is predicted by comprehensive judgment through the radar, vehicle speed, visual sensor and other on-board sensors, and then the steering wheel is adjusted to the collision position according to the collision risk. Here, the collision position is a pre-calibrated position that can protect the driver's head from being protected by the airbag. When a collision risk is detected, the steering wheel's flip motor and the column's adjustment motor are actively adjusted to meet the airbag explosion after the collision to protect the driver's head and avoid the defect that the steering wheel cannot protect the driver when it is in a hidden state. The prediction of the collision risk here is based on the set intelligent algorithm.

[0048] Since the driver can control the position of the steering wheel and the column through the control module, that is, the user actively adjusts the steering wheel position of the vehicle through the control module, such as the control module can be a soft switch on the multimedia host and a hard switch set on the central control, etc., but during the driving process of the vehicle, if it is not necessary, the enabling of the control module should be prohibited. The purpose of this is to avoid the driving safety hidden marriage caused by adjusting the steering wheel during the operation of the vehicle as much as possible. Therefore, when it is detected that the vehicle is in a driving state, the control module is prohibited from enabling work, and the steering wheel adjustment instructions controlled by the driver through the control module are ignored. However, when the vehicle has the ability to automatically drive and is in an automatic driving state, the driving function is automatically controlled by the intelligent driving algorithm, so control can be allowed, that is, when the vehicle is in a driving state, if the vehicle has an automatic driving function and the automatic driving function is started, the control module is allowed to enable work, and the driver can operate the control module to adjust the steering wheel and the column. The collection of driving status can be judged by the vehicle speed whether the vehicle is in a driving state. When the vehicle speed is 0, the vehicle is in a stationary state, and the control module can be enabled to work. In this way, the safety of vehicle control can be guaranteed.

[0049] In a preferred embodiment, the control process of the adjustment motor and the flip motor may contain false or unknown calibration inaccuracies, so a position self-learning mode is set. After the vehicle is powered on and the position self-learning mode is turned on, the controller completes self-check and manually adjusts the steering wheel and the electric adjustment column angle and height to the extreme position. The motor current value is used to determine whether it is the extreme position. According to the detected electric adjustment column height and angle extreme positions, the intermediate position is calculated and the Hall numbers corresponding to the extreme positions and the intermediate positions of the height adjustment motor and the angle adjustment motor are memorized. According to the detected steering wheel flip extreme position, the flip extreme position is memorized and the motor Hall numbers corresponding to the extreme positions are memorized. The memorized Hall numbers correspond to the respective position information, thereby realizing the position self-learning function.

[0050] In a preferred embodiment, a one-button reset mode is provided, and the user calls up the one-button reset function through a large-screen button, a switch or a voice command. After the one-button reset function is called up and triggered, the steering wheel, the electrically adjustable column and the seat are controlled to respectively move, and the seat recline, the column angle, the height and the steering wheel flip angle are adjusted to the maximum position, or to the initial position, thereby realizing the reset control of the vehicle column and steering wheel position.

[0051] In this embodiment, an anti-pinch control strategy for the steering wheel storage and hiding system is to prevent the driver or outsiders from accidentally operating the steering wheel storage and hiding system. The steering wheel controls the angle and height adjustment motor of the electric adjustment column and the flip motor of the steering wheel through the ECU control system, monitors these motors and abnormal current signals, and stops the steering wheel and column in time to prevent people from being accidentally injured by being pinched by the steering wheel.

[0052] Steering wheel storage hidden anti-pinch related system such as Figure 1 As shown, the host stores the user's driving position and determines the specific state of the steering wheel based on the user's needs. The hidden steering wheel can be applied to several vehicle states, such as the welcoming mode for getting on and off the vehicle, the rest mode in the vehicle, and the entertainment mode.

[0053] ① Welcome mode for getting on the car. When the user opens the main driving door, the steering wheel and the electric adjustment column are at the upper limit of the angle, and the seat moves to the rear position. When the user gets on the car and closes the door, the seat and the column will automatically adjust to their own driving position (defined by the user) after the vehicle is powered on. When the user needs to get off the vehicle, the vehicle is turned off and the power is turned off. This is the reverse movement of getting on the vehicle, and the steering wheel column and seat are restored to the most suitable state for the user to get off the vehicle.

[0054] ② Rest mode and entertainment mode, when the user is resting in the car, the "steering wheel hiding" can be triggered through the host soft switch or hard switch. At this time, the ECU control system will receive the switch signal and synchronously operate the seat system, steering system, and folding steering wheel through the domain control system. The working operation logic is as follows: 1. The central processing unit (CPU) judges in order: vehicle voltage; self-test qualified; seat memory, retrieval signal; motor position signal; vehicle speed signal and other information. If qualified, the steering wheel storage and hiding command is executed; 2. Storage and hiding order: column angle is raised to the upper limit → steering wheel is flipped to the lower limit → steering wheel angle is adjusted to the lower limit → column is stored to the lower limit → seat is synchronously adjusted to the rest state.

[0055] ③ Anti-pinch function: When the steering wheel storage and hiding system is executing normally or is not performing the hidden storage action, if a person or other object is pinched, the steering wheel and motor position signals will send abnormal signals. At the same time, the control system detects that the abnormal current exceeds the threshold and the action time exceeds the threshold. The storage and hiding system will only stop the next action and maintain the current state to avoid continued action that may harm people. Moreover, when an accident occurs, the steering wheel storage and hiding action stops, which can effectively solve the damage to the steering wheel hiding storage system, while also avoiding further harm to people, providing a higher level of safety.

[0056] Taking the steering wheel adjustment embodiment as an example, the strategy of hiding the control system includes:

[0057] 1. When the driver turns on the hidden steering wheel function, the CPU will start the self-check function, including the vehicle voltage, the folding steering wheel motor status, the electric column angle and height adjustment motor status, the seat status, and the system current threshold. The system will start working only if it passes the self-check. When a fault occurs, the hidden steering wheel will stop working immediately, and the instrument will display the fault location status for easy maintenance.

[0058] 2. After the self-test is qualified, the electric column adjustment motor starts to work, adjusting the steering wheel to the upper limit of the angle +2°, the steering wheel folding motor starts to work, and the steering wheel is flipped until the lower limit angle is -73° (the steering wheel folding sensing position is limited by the grating), the electric column angle adjustment motor starts to work synchronously, adjusting the steering wheel to the lower limit of the angle -2°, and the electric column height adjustment motor starts to work, and the steering wheel is stored to the lower limit of the height. At this point, the steering wheel storage and hiding work has been completed. Since the column can be adjusted, the column is adjusted upward by +2°, and the steering wheel can be folded down, with a folding angle of -73°, thereby meeting the required control purpose.

[0059] 3. Different users can set the driving position according to their own driving habits, adjust the steering wheel position through the electric column height and angle adjustment button; adjust the seat position through the seat adjustment button. When the driving position is not suitable for your own operation, and the space is small, there is a phenomenon of pinching people, the steering wheel and motor position signals will send abnormal current signals. When the threshold set by the system is exceeded, the signal is transmitted to the central processor ECU. The central processor ECU and the related instruments, seats, host, and vehicle domain control signals interact in real time, and send abnormal instructions to the steering wheel and motor sensors to stop the operation function to avoid harm to the human body and achieve the purpose of protecting users.

[0060] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. An anti-pinch control method for a steering wheel storage and hiding system, wherein the steering wheel storage and hiding system comprises an angle and height adjustment motor of an electric adjustable column and a flip motor of a steering wheel, and an ECU control system outputs control signals to the angle and height adjustment motor and the flip motor to control the positions of the electric adjustable column and the steering wheel; the method is characterized in that: The abnormal signal acquisition module collects motor abnormality and current abnormality signals. When the abnormal signal is detected, the driving angle and height adjustment motor and the flip motor stop working.

2. The anti-pinch control method of the steering wheel storage and concealment system according to claim 1, characterized in that: After the abnormal signal is detected and the system stops working and reaches the set threshold, the angle and height adjustment motors and the flip motor are adjusted in turn to control the forward and backward movement in the direction of movement before the abnormal signal is detected. If the abnormal signal disappears during the forward and backward movement control process, the system continues to run to the set position in the direction of movement before the abnormal signal is detected.

3. The anti-pinch control method of the steering wheel storage and concealment system according to claim 1, characterized in that: The state position of the steering wheel corresponding to the user's driving position is pre-set. When the vehicle is in the driving state, the steering wheel is controlled to reach the state position through the angle and height adjustment motor and the steering wheel flip motor.

4. The anti-pinch control method of the steering wheel storage and concealment system according to claim 1, characterized in that: When it is detected that the vehicle is in the welcome mode, if it is detected that the user has opened the main driver's door and is in the vehicle, the steering wheel and the electric adjustment column are controlled to be in the upper limit position of the angle, and the seat is controlled to move backward to the limit position; and after it is detected that the user gets in the vehicle and closes the door and the entire vehicle is powered on, the seat, the electric adjustment column and the steering wheel are controlled to adjust to the state position corresponding to the user's driving.

5. The anti-pinch control method of the steering wheel storage and concealment system according to claim 4, characterized in that: After detecting that the vehicle is stalled, the steering wheel and the electrically adjustable column are moved to a position that is convenient for getting on and off the vehicle through the angle and height adjustment motor and the flip motor, while the seat is controlled to move backward to the extreme position.

6. The anti-pinch control method of the steering wheel storage and concealment system according to any one of claims 1 to 5, characterized in that: When the user is resting in the car, the steering wheel hiding function is triggered through the host soft switch or the set hard switch. At this time, after the ECU controller receives the steering wheel hiding function being triggered, it controls the seat and steering wheel to the position corresponding to the rest state.

7. The anti-pinch control method of the steering wheel storage and concealment system according to any one of claims 1 to 6, characterized in that: When an abnormal signal is detected, the abnormal current of the motor is detected. When the abnormal current exceeds the set threshold and lasts longer than the set time threshold, the anti-pinch function is activated, and the angle and height adjustment motors and flip motors are controlled to stop working and remain stopped.

8. The anti-pinch control method of the steering wheel storage and concealment system according to any one of claims 1 to 6, characterized in that: When the vehicle is running, the running state of the vehicle is detected, the collision risk of the vehicle is predicted based on the running state, and the steering wheel storage and hiding system of the vehicle is adjusted and controlled based on the predicted collision risk.

9. The anti-pinch control method of a steering wheel storage and concealment system according to any one of claims 1 to 6, characterized in that: A control module is provided, through which the user actively adjusts the steering wheel position of the vehicle. When the vehicle is in a driving state, the control module is prohibited from being enabled.

10. The anti-pinch control method of the steering wheel storage and concealment system according to claim 9, characterized in that: When the vehicle is in driving state, if the vehicle has the automatic driving function and the automatic driving function is started, the control module is allowed to enable work.

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