Anti-pinch control method for a steering wheel stowage and concealment system

Abstract

The application discloses a kind of anti-pinch control methods of steering wheel storage hidden system, the steering wheel storage hidden system includes the angle and height adjustment motor of electric adjusting tube column, the steering wheel overturning motor, the position of steering wheel is controlled by ECU control system output control signal respectively to angle and height adjustment motor, overturning motor;Abnormal signal acquisition module is collected motor abnormality and current abnormality signal, when detecting abnormal signal, drive angle and height adjustment motor, overturning motor stop working.The application has the advantages that: by monitoring the motor in the steering wheel storage hidden system, the purpose of anti-pinch monitoring is realized, to prevent people from being injured by steering wheel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of steering wheel control, in particular to a steering wheel storage and hiding system anti-pinch control method. BACKGROUND

[0002] With the rapid development and popularization of automobile technology, private cars have become an essential means of transportation for consumers. In today's society, people's living standards are gradually improving, and private cars are becoming more and more popular, and are the transportation tool that people are pursuing. However, due to the increasing demand, various new requirements and needs will be faced, and we need to continuously optimize the performance of the car in all aspects and move towards a safer and more convenient direction. As the direct carrier of controlling the car, the steering wheel needs to be easy to control and simple and powerful. However, it needs to occupy a certain driving space, which is not conducive to the user to perform some range of actions. Therefore, the steering wheel storage and hiding emerges as the times require, which can release the driving space and can be fully applied to the 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 by the motor, thereby freeing up the space where the steering wheel is located, and improving the user experience. When people travel and drive vehicles in their daily lives, the adjustment of the steering wheel is achieved by the four-way adjustment mechanism of the column, but the circular volume of the steering wheel will always occupy a certain driving space, making the already small driving space even more cramped. The storage and hiding of the steering wheel solves the higher demand of users for flexible space in the future, and also aims to improve customer experience and pursue the development trend of technology.

[0004] With the development of intelligent driving, electric and intelligent applications are applied to vehicles, and the hidden storage and adjustment of the steering wheel gradually matures, which can be manually adjusted according to user needs, or even automatically adjusted, but the safety and reliability of the existing technology for its adjustment still cannot meet the user requirements, such as anti-pinch. SUMMARY

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

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a steering wheel storage and hiding system anti-pinch control method, the steering wheel storage and hiding system includes angle and height adjustment motor of electric adjustment column, steering wheel overturning motor, the ECU control system outputs control signals to the angle and height adjustment motor and the overturning motor to control the position of the steering wheel.

[0007] In the process of controlling the adjusting motor and the reversing motor, the motor abnormality and current abnormality signals are collected through the abnormal signal collection module. When the abnormal signal is detected, the angle and height adjusting motor and the reversing motor stop working to avoid the safety hazard caused by clamping people or other objects during the adjustment process. When the adjusting motor or the reversing motor is running, if an object is clamped, the motor will generate a stall, at which time the motor will send an abnormal signal, and the current signal can be monitored to determine the stall. Therefore, the motor current will be abnormal during the stall, and the anti-pinch monitoring can be realized based on the abnormal current.

[0008] After stopping working to reach the set threshold value after detecting the abnormal signal, the angle and height adjusting motor and the reversing motor are adjusted in turn to move forward and backward in the direction before the abnormal signal is detected. If the abnormal signal disappears during the forward and backward movement control, the motor continues to run to the set position in the direction before the abnormal signal is detected.

[0009] The state position of the steering wheel corresponding to the driving position of the user is set in advance. When the vehicle is in the driving state, the steering wheel is controlled to reach the state position by the angle and height adjusting motor and the reversing motor of the steering wheel.

[0010] When it is detected that the vehicle is in the welcome mode state, if it is detected that the user opens the driver's door and is in the boarding state, the steering wheel and the electric adjusting column are controlled to be in the angle upper limit position, and the seat is controlled to move backward to the limit position. After detecting that the user boards and closes the door and the vehicle is powered on, the seat, the electric adjusting column and the steering wheel are adjusted to the state position corresponding to the user driving.

[0011] After detecting that the vehicle is turned off, the steering wheel and the electric adjusting column are moved to a position convenient for boarding and alighting by the angle and height adjusting motor and the reversing motor, and the seat is controlled to move backward to the limit position.

[0012] When the user is resting in the vehicle, the steering wheel hiding function is triggered by the host soft switch or the set hard switch. When the ECU controller receives that the steering wheel hiding function is triggered, the seat and the steering wheel are controlled to be in the position corresponding to the resting state.

[0013] When the abnormal signal is detected, the motor abnormal current is detected. When the abnormal current exceeds the set threshold value and the duration is greater than the set time threshold value, the anti-pinch function is started, and the angle and height adjusting motor and the reversing motor are controlled to stop working and remain.

[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] The control module is enabled to work when the vehicle is in a driving state.

[0016] The control module is enabled to work when the vehicle is in a driving state.

[0017] The control module is enabled to work when the vehicle is in a driving state. The advantages of the present application are as follows: the motor in the steering wheel storage and hiding system is monitored to achieve the purpose of anti-pinch monitoring, and the risk of being injured by the steering wheel is prevented.The series of related systems such as steer-by-wire, seat personalized rotation, and steering wheel storage and hiding are linked to realize the safety and stability of the steering system during the operation of the vehicle. The safety experience of the electric adjustment is improved. The demand of the vehicle user for flexible driving space and intelligent cabin is met. The electric adjustment column can be applied to various scenes, and the customer can experience the sense of technology, luxury, and new ecology.

[0018] The content expressed by each figure in the specification of the present application and the marks in the figures are briefly described as follows:

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

[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 application.

[0021] Figure 3 It is a function comparison diagram of the functions 1-5 involved in the present application. Figure 2 Specific embodiments of the present application are further described in detail below by comparing the figures and describing the optimal embodiments.

[0022] The specific embodiments of the present application are further described in detail below by comparing the figures and describing the optimal embodiments.

[0023] The embodiment provides a judgment control strategy for an electric adjusting column and a steering wheel hiding, including an anti-pinch control strategy, which needs to be linked with a vehicle domain control, a steering system, a central processing unit (CPU), an instrument, a seat system and the like, according to a demand point of a vehicle driver and convenience and comfort of the electric adjusting column, reasonable function logic is formulated, and a man-machine architecture relationship between the linkage system and a user needs to be solved. The application scenarios of the steering wheel storage and hiding, linkage of related systems, a vehicle running state, function logic and a motion envelope of the steering wheel and the steering column need to be considered. The anti-pinch function of the electric adjusting column mainly includes a steering wheel turning, an electric adjusting column, a man-machine system and an ECU control system, the output of an ECU signal is controlled through a man-machine system soft and hard switch, and then the motion of the electric adjusting column is controlled, so that the anti-pinch function of the steering wheel and the column is realized.

[0024] The scheme of the embodiment needs to include an electric adjusting column, a control unit, an instrument host and a vehicle domain control. At least the following functions are developed and realized:

[0025] ①In-out function: after the vehicle is turned off, the steering wheel and the column are adjusted to the maximum position of the angle and the height, and the seat is in the last position, so that the user is facilitated to get on the vehicle;

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

[0027] ③Electric adjusting function: the angle and the height direction of the steering wheel and the column are electrically adjusted through a vehicle mechanical switch or a large-screen button, so that the space of the cockpit is maximized, and the demand of a customer for the position of the steering wheel is met;

[0028] ④Speed regulation function: based on a PWM modulation voltage, a central processing unit (CPU) judges whether the PWM modulation voltage is started or not by monitoring the motor position, so that the slow rising and slow falling functions are realized.

[0029] ⑤Self-learning middle position and self-correcting middle position: after the vehicle is powered on and the controller completes self-checking, the steering wheel, the electric adjusting column angle and the height are manually adjusted to the limit position, whether the limit position is judged according to the motor current value, the middle position is calculated according to the detected limit position of the electric adjusting column height and angle, and the Hall number corresponding to the limit position of the height adjusting motor and the angle adjusting motor and the middle position is memorized, and the limit position of the steering wheel turning is memorized and the motor Hall number corresponding to the limit position is memorized according to the detected limit position of the steering wheel turning.

[0030] ⑥Anti-pinch function: a central processing unit (CPU) judges whether there is an adjusting abnormality by monitoring the adjusting current value and the motor position, and the motor is kept at the current position when the adjusting abnormality is judged according to the current change value in each period.

[0031] 7. One-key reset mode: one-key reset can be triggered by large screen button or voice command: direction + column + seat + control system linkage, seat retreats, steering wheel angle and height reset to maximum position.

[0032] As shown in Figure 1 The anti-pinch control method of the steering wheel storage and hiding system involves a system architecture including a central processing unit ECU, a seat system, an electric adjustment column, a folding steering wheel system, and a vehicle-mounted multimedia host, an instrument IHU, and a whole vehicle domain control. The instrument and the multimedia host are used to interact with the user, obtain the user's setting or adjustment signal, and send alarm and system status signals to the user. The seat system is an electric seat that can adjust the forward and backward movement of the seat and the angle of the seat backrest by controlling the motor. The electric adjustment column and the folding steering wheel system are used to control the positions of the column and the steering wheel, respectively, and achieve the purpose of hiding by electronic adjustment of the direction movement of the electric adjustment column and the folding of the steering wheel. 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 folding of the steering wheel refers to folding the steering wheel by the motor to reduce the space occupied by the steering wheel, thereby achieving the purpose of folding. The control strategy of the steering wheel hiding system is designed to realize intelligentization, automation, and anti-pinch functions, improve the reliability, safety, and intelligentization of the steering wheel storage and hiding system, and the specific scheme is as follows:

[0033] An anti-pinch control method of a steering wheel storage and hiding system, the steering wheel storage and hiding system including an angle and height adjustment motor of an electric adjustment column and a steering wheel overturning motor, the angle and height adjustment motor being used to adjust the angle and height of the electric adjustment column, and the steering wheel overturning motor being used to adjust the overturning of the steering wheel. The ECU control system outputs control signals to the angle and height adjustment motor and the overturning motor to control the positions of the electric adjustment column and the steering wheel. The abnormal signal acquisition module acquires motor abnormal and current abnormal signals, and drives the angle and height adjustment motor and the overturning motor to stop working when an abnormal signal is detected.

[0034] In the process of controlling the adjusting motor and the reversing motor, the motor abnormality and current abnormality signals are collected through the abnormal signal collection module. When the abnormal signal is detected, the angle and height adjusting motor and the reversing motor stop working to avoid the safety hazard caused by clamping people or other objects during the adjusting process. When the adjusting motor or the reversing motor is running, if an object is clamped, the motor will produce a stall, at which time the motor will send an abnormal signal, and the current signal can be monitored to determine the stall. Therefore, the current of the motor during the stall process will be abnormal, and the anti-clamping monitoring can be realized based on the abnormal current. When the abnormal signal is detected, the motor abnormal current is detected. When the abnormal current exceeds the set threshold and the duration is greater than the set time threshold, the anti-clamping function is started, and the angle and height adjusting motor and the reversing motor stop working and remain. During the motor rotation, in order to avoid accidental abnormal current signals, the current signal of the motor is monitored in real time during the operation of the adjusting motor and the reversing motor. When the current of any of the adjusting motor and the reversing motor is greater than the set current threshold and the time duration is set for a period of time, it is judged that the motor is stalled at this time. At this time, the corresponding steering wheel and electric adjusting column should be clamped to an object, so the adjusting motor and the reversing motor should be stopped to avoid the safety hazard or damage to the motor caused by clamping the object. At the same time, the information that the motor is clamped to the object is sent by the instrument or the multimedia host system to alarm and remind the driver of the anti-clamping state at this time, so that the driver can adjust it in time.

[0035] In a preferred embodiment, after stopping work for a set time threshold after detecting an abnormal signal, the angle and height adjustment motors and the reversing motor are adjusted in turn to control forward and backward movement in the direction of movement before the abnormal signal was detected. If the abnormal signal disappears during the forward and backward movement control, the adjustment motor and the reversing motor continue to run to the set position in the direction of movement before the abnormal signal was 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. However, if a person or object is clamped, a reminder will be sent through the instrument, and the driver will remove this hidden danger, so the work cannot be stopped all the time. After the work is stopped for a set threshold time, it is necessary to try to restore the state of continuing to work to achieve the purpose of automatic recovery. At this time, the work is stopped for a set time, such as three seconds or five seconds, and then the work state of the adjustment motor and the reversing motor before the abnormal signal is continued to control the motor movement by one angle or a small distance. The motor movement by a small displacement drives the corresponding movement of the electric adjustment pipe column and the pay-off disc by a small displacement. If the current is still greater than the set current threshold at this time, the adjustment motor or the reversing motor is controlled to stop working until the next time threshold is reached to start again until the motor movement by a small displacement drives the corresponding movement of the electric adjustment pipe column and the pay-off disc by a small displacement. When the current abnormal signal disappears, there is no abnormal signal, indicating that the driver has removed the object on the steering wheel or electric adjustment pipe column moving position, so the adjustment motor and the reversing motor are controlled to continue to run to the set position in the direction of movement before the abnormal signal was detected. This set position is a position set in advance by the user or automatically detected by the state mode, such as when the steering wheel and the electric adjustment pipe column are moving to the upper limit position to facilitate the user to get on and off the vehicle. At this time, the set position is the upper limit position. After the abnormal signal disappears, the running state of the adjustment motor and the reversing motor is restored.

[0036] The normal position of the steering wheel, the limit position which needs to be flipped when hidden, and the corresponding motor Hall number of the flipping motor are calibrated in advance, and the flipping adjustment of the steering wheel from the normal position to the limit position is realized according to the motor Hall number. Similarly, the normal position and the limit position of the angle and height of the electric adjustment column and the corresponding Hall number are calibrated in advance, and the position information can be set by the pre-calibration method. The user actively sets the position of the steering wheel suitable for driving when using, and then moves to the position suitable for the driver from the limit position or other position each time the vehicle is started. The state position of the steering wheel corresponding to the driving position of each driver information (i.e. the Hall number of the adjusting motor and the flipping motor) can be set by face, fingerprint and other methods, and the state position of the steering wheel corresponding to the driving position of the user is set in advance. When the vehicle is in the driving state, the steering wheel is controlled to reach the state position by the angle and height adjusting motor and the flipping motor of the steering wheel. The driver obtains the identity information of the driver through face or fingerprint, then obtains the state position data matched with the driver set in advance through the identity information, and then controls the adjusting motor and the flipping motor to work through the state position data, so as to adjust the steering wheel and the electric adjustment column to the corresponding position to meet the control requirements of the driver.

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

[0038] 1. Welcome 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 driver door, it means that the driver has the demand to enter the vehicle, and at the moment when the door is 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 corresponding to the farthest position from the driver's seat, that is, the steering wheel and the electric adjustment column are moved toward the farthest position away from the seat or toward the vehicle head direction and reach the farthest position as the limit position. In this way, the steering wheel and the column are moved and the seat is moved backward, which vacates the position of the driver, facilitating the driver to get in and out of the vehicle.

[0040] After detecting that the user gets on the car and closes the door and the whole car is powered on, the seat and the electrically adjustable column and steering wheel are adjusted to the corresponding state position of the user driving. After the driver gets on the car, it is detected that the driver closes the driver's side door, at this time 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 can be read or the fingerprint and face of the driver are read to obtain the corresponding state position, that is, the position information of the steering wheel and the column required by the driver when normally using the steering wheel, which is converted into the Hall number of the motor through these position information, and the Hall number of the adjusting motor and the overturning motor is controlled to control the steering wheel and the electrically adjustable column to reach the set state position meeting the driving demand of the driver. At the same time, the seat is also an electrically controlled seat, which can also be automatically matched or pre-set in the seat position in the manner of fingerprint recognition to adjust the seat to a position suitable for the driver to drive the vehicle. Thus, when the door is opened to welcome, the seat and the 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 driver's door, the seat and the steering wheel are controlled to return to the driving position or the initial position.

[0041] Similarly, after detecting that the vehicle is turned off, the steering wheel and the electrically adjustable column are moved to a position convenient for getting on and off the vehicle through the angle and height adjusting motor and the overturning motor, and the seat is controlled to move backward to the limit position, so that it is convenient for the driver to get off the vehicle after the vehicle is turned off.

[0042] 2. Rest and entertainment mode

[0043] When the user rests in the car, the rest and entertainment mode corresponding steering wheel hiding function is triggered through the host soft switch or the set hard switch, at this time the ECU controller receives that the steering wheel hiding function is triggered and enters the rest and entertainment mode, and controls the seat and the 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, therefore the seat at this time is adjusted to the rear of the vehicle, and the steering wheel and the steering column are hidden, that is, the steering wheel is controlled to reach the upper limit and the steering wheel is overturned, so as to empty the main driver position and facilitate the rest of the driver. The control logic is that after the rest and entertainment mode switch is triggered, the whole vehicle is self-checked and controlled, after the self-checking is qualified, the seat memory, signal calling, motor position signal reading and vehicle speed signal reading and other information are performed, it is judged whether to execute the hidden control box function, if yes, the steering wheel storage hiding instruction is executed. The storage hiding control includes: controlling the column angle to rise to the upper limit, then controlling the steering wheel to overturn to the lower limit, then controlling the steering wheel angle to adjust to the lower limit, controlling the column to store to the lower limit, and finally synchronously adjusting the seat to the position of the rest state.

[0044] 3. Anti-pinch mode

[0045] When the steering wheel storage and hiding system normally executes or executes the hiding and storage action, and a person or other object is clamped, the steering wheel and motor position signal will send an abnormal signal, and the control system detects that the abnormal current exceeds the threshold value and the action time exceeds the threshold value. The storage and hiding system will stop the next action and keep the current state to avoid further action that may harm the person.

[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 by the driver, but the correct position of the steering wheel can meet the protection of the driver's head by the airbag after the accident, the radar, speed, visual sensor and other sensors on the vehicle are used to predict the collision risk of the vehicle, and then the steering wheel is adjusted to the collision position according to the collision risk. The collision position is a position that can protect the driver's head protected by the airbag, and when the collision risk is detected, the steering wheel and the column are adjusted to meet the protection of the driver's head by the airbag after the collision. The collision risk prediction is based on the set intelligent algorithm.

[0048] Since the driver can control the position of the steering wheel and the column through the set control module, i.e. the user actively adjusts the position of the steering wheel of the vehicle through the control module, such as soft switch on the multimedia host and hard switch set on the central control, etc., but during the driving of the vehicle, the control module should be disabled if necessary. The purpose of doing this is to avoid the safety hazard of adjusting the steering wheel during the driving of the vehicle as much as possible. Therefore, when the vehicle is detected to be in the driving state, the control module is disabled, and the steering wheel adjustment instruction of the driver through the control module is ignored at this time. However, when the vehicle has automatic driving capability and is in the automatic driving state, the driving function is automatically controlled by the intelligent driving algorithm at this time, so the control is allowed, i.e. when the vehicle is in the driving state, if the vehicle has automatic driving function and the automatic driving function is started, the control module is enabled, and the driver can operate the control module to adjust the steering wheel and the column. The driving state can be collected by judging whether the vehicle is in the driving state by the vehicle speed. When the vehicle speed is 0, the vehicle is in the stationary state, and the control module is enabled at this time. In this way, the safety of the vehicle control can be ensured.

[0049] In a preferred embodiment, the control process of the adjusting motor and the reversing motor can be false or unknown calibration inaccurate, so a position self-learning mode is set. After the vehicle is powered on, the position self-learning mode is started, and after the controller completes self-checking, the steering wheel, the electric adjusting column angle and height are manually adjusted to the limit position. Whether it is the limit position is judged by the motor current value. According to the detected electric adjusting column height and angle limit position, the intermediate position is calculated and the Hall number corresponding to the height adjusting motor and angle adjusting motor limit position and the intermediate position is memorized. According to the detected steering wheel reversing limit position, the reversing limit position is memorized and the motor Hall number corresponding to the limit position is memorized. The memorized Hall number corresponds to the respective position information, so as to realize the position self-learning function.

[0050] In a preferred embodiment, a one-key reset mode is set. The user calls out the one-key reset function through the large screen button, switch or voice instruction. After the one-key reset function is called out and triggered, the steering wheel, electric adjusting column and seat are controlled to move respectively. The seat is retreated, the column angle and height are adjusted to the maximum position, and the steering wheel reversing angle is adjusted to the initial position, so as to realize the reset control of the column and steering wheel position of the whole vehicle.

[0051] In the anti-pinch control strategy of the steering wheel storage and hiding system in the embodiment, when the driver or an outsider misoperates the steering wheel storage and hiding system, the steering wheel is controlled by the ECU control system to control the angle and height adjusting motor of the electric adjusting column and the reversing motor of the steering wheel. The motors and current abnormal signals are monitored to stop the steering wheel and column in time to prevent the driver from being pinched by the steering wheel.

[0052] The steering wheel storage and hiding anti-pinch association system is shown in Figure 1 The host memory stores the driving position of the user, and the specific state of the steering wheel is determined according to the demand of the user. The steering wheel storage and hiding can be applied to several vehicle states, such as the welcome mode when getting on and off the vehicle, the rest mode in the vehicle and the entertainment mode.

[0053] ①The welcome mode when getting on the vehicle. When the user opens the driver door, the steering wheel and the electric adjusting column are at the upper limit position of the angle, and the seat is moved to the rear position. When the user gets on the vehicle and closes the door, the vehicle is powered on. The seat and the column are automatically adjusted to the driving position (defined by the user). When the user needs to get off the vehicle, the vehicle is turned off and powered off. At this time, it is the reverse movement when getting on the vehicle. The steering wheel, column and seat return to the state most suitable 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, through the domain control system synchronous operation seat system, steering system, folding steering wheel. The working logic is as follows: 1. Central processing unit (CPU), in order to judge: vehicle voltage; self-test qualified; seat memory, call signal; motor position signal; vehicle speed signal and other information, qualified to execute steering wheel storage hidden instruction; 2. Storage hidden sequence: column angle lifting to the upper limit → steering wheel turning to the lower limit → steering wheel angle adjustment to the lower limit → column storage to the lower limit → seat synchronous adjustment to the rest state.

[0055] ③ Anti-pinch function: when the steering wheel storage and hiding system normally executes or does not operate during the hiding and storing action process, the steering wheel and motor position signal will send an abnormal signal, and at the same time the control system detects that the abnormal current exceeds the threshold value and the action time exceeds the threshold value, the storage and hiding system will stop the next action and keep the current state, to avoid further action that may harm people; moreover, when an accident occurs, the steering wheel storage and hiding action stops, which can effectively solve the damage of the steering wheel hiding and storing system, and also avoid further harm to people, providing higher safety level.

[0056] The strategy of the hiding control system is illustrated by the example of steering wheel adjustment, including:

[0057] 1. When the driver starts the steering wheel storage and hiding function, the central processing unit will start the self-test function, the vehicle voltage, the folding steering wheel motor state, the electric adjustment column angle and height adjustment motor state, the seat state, the system current threshold, and the system self-test qualified, and then start working. When a fault occurs, the steering wheel storage and hiding will stop working immediately, and the instrument will display the fault position state for easy maintenance.

[0058] 2. After self-test, the electric adjustment column adjustment motor starts working, adjusts the steering wheel to the upper limit +2°, the steering wheel folding motor starts working, and the steering wheel is folded until the lower limit angle -73° (the steering wheel folding sensing position is limited by the grating), the electric adjustment column angle adjustment motor starts working, and the steering wheel is adjusted to the lower limit -2°, the electric adjustment column height adjustment motor starts working, and the steering wheel is stored to the lower limit position. 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°, the steering wheel can be folded downward by -73°, thereby meeting the required control purpose.

[0059] 3、Different users can set driving position according to their driving habits, adjust the steering wheel position through the electric adjusting column height and angle adjustment button, and adjust the seat position through the seat adjustment button. When the misoperation is not suitable for the driving position and the space is small, there is a phenomenon of pinching people, the steering wheel and motor position signal will send an abnormal current signal, when the signal exceeds the system set threshold, the signal is transmitted to the central processor ECU, the central processor ECU and the related instruments, seats, mainframes, vehicle area control signals interact in time, and abnormal instructions are sent to the steering wheel and motor sensor to stop running function, avoid causing harm to the human body, and achieve the purpose of protecting the user.

[0060] Obviously, the specific implementation of the present application is not limited by the above-mentioned manner, and various non-essential improvements made by adopting the method concept and technical scheme of the present application are within the protection scope of the present application.

Claims

1. A method for anti-pinch control of a steering wheel stowage and concealment system, the steering wheel stowage and concealment system comprising an angle and height adjustment motor of an electric steering column, a turnover motor of a steering wheel, the position of the electric steering column and the steering wheel being controlled by the ECU control system outputting control signals to the angle and height adjustment motor and the turnover motor respectively; characterized in that: The motor abnormality and current abnormality signals are collected by the abnormal signal collection module, and the angle and height adjusting motors and the overturning motor are stopped from working when the abnormal signals are detected; After the stop working reaches the set threshold value, the angle and height adjusting motors and the overturning motor are adjusted in sequence and controlled to move forward and backward in the direction before the abnormal signal is detected, at this time, the stop working reaches the set time, then the angle and height adjusting motors and the overturning motor are continuously controlled to move an angle or a small distance, through the movement of the angle and height adjusting motors and the overturning motor, the electric adjustment pipe column and the pay-off disc are driven to move a small displacement, at this time, if the current is still greater than the set current threshold value, the angle and height adjusting motors or the overturning motor are continuously controlled to stop working, until the next time threshold value is reached and the angle and height adjusting motors or the overturning motor are started again, until the current abnormality signal disappears through the movement of the angle and height adjusting motors or the overturning motor to drive the electric adjustment pipe column and the pay-off disc to move a small displacement, at this time, the angle and height adjusting motors and the overturning motor are continuously controlled to move to the set position in the direction before the abnormal signal is detected.

2. The anti-pinch control method of a steering wheel storage and concealment system according to claim 1, characterized by: The state position of the steering wheel corresponding to the driving position of the user is set in advance, when the vehicle is in the driving state, the steering wheel is controlled to reach the state position by the angle and height adjusting motors and the overturning motor of the steering wheel.

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

4. The anti-pinch control method of a steering wheel storage and concealment system according to claim 3, characterized by: After it is detected that the vehicle is turned off, the steering wheel and the electric adjustment pipe column are moved to a position convenient for getting in and out by the angle and height adjusting motors and the overturning motor, and the seat is controlled to move to the limit position backward.

5. The anti-pinch control method of a steering wheel storage and concealment system according to any one of claims 1 to 4, characterized by: When the user is resting in the vehicle, the steering wheel hiding function is triggered by the host soft switch or the set hard switch, at this time, the ECU controller receives that the steering wheel hiding function is triggered, and controls the seat and the steering wheel to be in the position corresponding to the resting state.

6. The anti-pinch control method of a steering wheel storage and concealment system according to any one of claims 1 to 4, characterized by: When the abnormal signal is detected, the motor abnormality current is detected, when the abnormal current exceeds the set threshold value and the duration is greater than the set time threshold value, the anti-pinch function is started, the angle and height adjusting motors and the overturning motor are controlled to stop working and remain.

7. The anti-pinch control method of a steering wheel storage and concealment system according to any one of claims 1-4, 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.

8. The anti-pinch control method of a steering wheel storage and concealment system according to any one of claims 1-4, characterized in that: The control module is provided, and the user actively adjusts the position of the steering wheel of the vehicle through the control module, and the control module is disabled from working when the vehicle is in the driving state.

9. The anti-pinch control method of a steering wheel storage and concealment system according to claim 8, characterized by: When the vehicle is in the driving state, if the vehicle has an automatic driving function and the automatic driving function is started, the control module is enabled to work. When the vehicle is in the driving state, if the vehicle has an automatic driving function and the automatic driving function is started, the control module is enabled to work.

Images