Fusion type automobile automatic parking control system and method

Abstract

The invention discloses a fusion type automobile automatic parking control system and method. The system comprises fusion type keys, a parking controller and an actuator. The fusion type key is connected with the parking controller, the parking controller is connected with the actuator, and the parking controller achieves an Autohold function and an electronic parking function based on the trigger state of the fusion type key and drives the actuator to work so as to achieve the Autohold function and / or the electronic parking function. The system has the advantages that automatic parking and electronic parking braking functions and safety control thereof are achieved through one key in an integrated fusion mode, the purpose of integration is achieved, one entity key is saved, and hardware cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of automobile brake control, and in particular to a fusion type automobile automatic parking control system and method. Background Art

[0002] The parking functions of cars generally include electronic parking brake function and automatic parking hold function. The Auto Hold function and electronic parking brake (EPB) function are widely used to improve driving safety and convenience. The Auto Hold function automatically keeps the vehicle immobile during short parking, reducing the driver's operating burden; while the EPB function is used to fix the vehicle through an electronic control system during long-term parking.

[0003] In the prior art, the Auto Hold function and the Electronic Parking Brake (EPB) are usually controlled by independent buttons, and the driver needs to operate the two buttons separately according to the needs. Although this design provides functional independence, it also increases the cost of the vehicle's physical control buttons, resulting in unnecessary cost expenditure.

[0004] With the development of vehicle integration, single-function buttons are gradually being eliminated or integrated. Integration can greatly save hardware costs. Reducing hardware buttons can also improve the flatness of the vehicle interior and reduce the space and design requirements for additional switches. However, the existing technology does not have an integrated solution for the control of parking switches, which cannot meet the requirements for integration of vehicle parking control functions. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a fusion type automobile automatic parking control system and method, which realizes automatic parking and electronic parking brake functions and their safety control through one button, thereby achieving the purpose of integration.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a fusion type automobile automatic parking control system, including a fusion type button, a parking controller, and an actuator; the fusion type button is connected to the parking controller, the parking controller is connected to the actuator, and the parking controller performs the Autohold function and the electronic parking function based on the trigger state of the fusion type button and drives the actuator to work to realize the Autohold function and / or the electronic parking function.

[0007] The parking controller is connected to the vehicle-mounted sensor and is used to obtain vehicle status data.

[0008] The parking controller is connected to the vehicle instrument panel and is used to display the activation status of the Autohold function and the electronic parking function triggered by the fusion button.

[0009] A control method for a fusion-type automobile automatic parking control system includes: driving an actuator through a parking controller to realize an Autohold function and an electronic parking function of the vehicle; the parking controller obtains a trigger signal of a fusion-type button to determine whether the Autohold function is activated and whether the electronic parking function is activated.

[0010] The Autohold function triggered by the integrated button and the status of the electronic parking function are displayed and reminded through the on-board instrument panel.

[0011] If the fusion button is triggered twice or more within the set time, the Autohold function will be activated. After the Autohold function is activated, the vehicle status is monitored in real time. When the vehicle meets the Autohold function enabling working status, the corresponding function is executed through the actuator.

[0012] When the vehicle is stationary, if the fusion button is triggered once within the set time, the actuator will start to realize the electronic parking function; when the vehicle is in driving state, if the fusion button is triggered and the single trigger duration is greater than the set time threshold, the vehicle is judged to be in an abnormal braking state, and the vehicle braking function is realized through the actuator.

[0013] When the vehicle is driving, if the fusion button is triggered and the triggering number is only once within the set time threshold and the triggering duration is less than the set time threshold, the fusion button is judged as a false trigger and the triggering is ignored. The driving status of the vehicle is collected, and the priority of the Autohold function and the electronic parking function is set according to the driving status of the vehicle, and their functions are executed according to the priority.

[0014] The triggering of the fusion button is monitored to determine whether the triggering is in abnormal operation. If so, a locking mechanism mode is entered. In the locking mechanism mode, the fusion button function is disabled.

[0015] The advantages of the present invention are: through an integrated fusion approach, one button is used to complete the automatic parking and electronic parking brake functions and their safety control, thereby achieving the purpose of integration, saving one physical button, reducing hardware costs, and at the same time, the vehicle is controlled for safety and reliability by triggering one button, thereby improving the reliability and safety of the vehicle's parking brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0017] Figure 1 It is a structural principle diagram of the integrated parking brake control system of the present invention;

[0018] Figure 2The figure is a flow chart of activating the Autohold function by the fusion key of the present invention. DETAILED DESCRIPTION

[0019] 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.

[0020] This embodiment relates to a control system solution for an integrated automatic parking (Auto Hold) and electronic parking brake (EPB) fusion switch, which integrates the automatic parking function and the electronic parking brake EPB function and designs a single integrated button. The Auto Hold function is activated by pressing the button twice, three times or multiple times within a set range, and the status is displayed through the car dashboard and indicator light. After the Auto Hold function is activated, the vehicle data is collected in real time through the integrated speed and slope sensor to determine whether the conditions for enabling the Auto Hold function are met, and then the actuator is controlled to realize the control of the Auto Hold function.

[0021] like Figure 1 As shown, a fusion type automobile automatic parking control system provided in this embodiment includes a fusion type button, a parking controller, and an actuator; the fusion type button is connected to the parking controller, and the parking controller is connected to the actuator;

[0022] The fusion button is an ordinary mechanical button, which is set in the car and can be triggered by the driver. By designing the trigger control logic of the fusion button, the activation of the Autohold function and the enabling of the electronic parking brake function can be controlled based on this fusion button. The parking controller is a vehicle-mounted controller used to implement parking brake control. The EPB controller can be reused to achieve the corresponding function. The actuator is the brake execution component, which is the braking system in the car, used to implement the braking control of the entire vehicle to meet the Autohold or electronic parking brake function.

[0023] The parking controller activates the Autohold function and the electronic parking function based on the triggering status of the fusion button and drives the actuator to work to realize the Autohold function and / or the electronic parking function. By monitoring the triggering status of the fusion button and the driving status of the vehicle, it is comprehensively judged whether the function corresponding to the triggering of the fusion button is the Autohold function or the electronic parking function, and then the vehicle instrument is used to display the enabling or starting status of the Autohold function or the electronic parking function to give the driver a reminder.

[0024] The parking controller is connected to the vehicle sensors, which are used to obtain vehicle status data, such as the vehicle speed sensor (wheel speed sensor), brake pedal sensor, etc., which are used to collect vehicle speed signals and brake pedal depression signals respectively. The parking controller is connected to the vehicle instrument through the CAN network, and is used to send the activation status signals of the Autohold function and the electronic parking function to the vehicle instrument, which is displayed and controlled by the vehicle instrument to show the activation status of the Autohold function and the electronic parking function triggered by the fusion button.

[0025] Based on the fusion type automobile automatic parking control system in the above embodiment, this embodiment provides a control method based on the above control system, which is used to realize the monitoring and processing of the fusion type buttons to execute the required functions accordingly, thereby improving the user experience, reducing false triggering, and improving the safety of the user. The specific scheme is as follows:

[0026] A control method for a fusion-type automobile automatic parking control system includes: driving an actuator through a parking controller to realize the vehicle's Autohold function and electronic parking function; the parking controller obtains a trigger signal from a fusion-type button to determine whether the Autohold function is activated and whether the electronic parking function is enabled to work. The functions are triggered to enable or activate through different trigger logics of the fusion-type button, thereby achieving the purpose of using one button to realize two functions. Whether it is the Autohold function or the electronic parking brake function, the actuator is used to perform braking control to realize its corresponding function.

[0027] The activation of the Autohold function triggered by the integrated button and the enabling status of the electronic parking function are displayed and reminded through the on-board instrument, so that the driver can know in time whether the functions corresponding to their operations are executed normally, and it is convenient for the driver to use and understand the status.

[0028] After the Autohold function is activated, the function will be enabled only when the Autohold function is enabled, and the electronic parking function is directly enabled after being triggered, thereby meeting the driver's electronic parking needs. The activation of the Autohold function and the enabling of the electronic parking system are both achieved through a fusion button. The enabling control method of the fusion button includes:

[0029] If the fusion button is triggered twice or more within the set time and the number of times is less than the set threshold, the Autohold function is activated. After the Autohold function is activated, the vehicle status is monitored in real time. After the vehicle meets the Autohold function enabling working state, the corresponding function is executed through the actuator. After the vehicle is started, whether the vehicle is in motion or stationary state, the Autohold function is activated or closed if the button is triggered twice continuously within the set time. When the current state is in the activated state, it switches from the activated state to the closed state after two consecutive triggers. On the contrary, if it is currently in the closed state, it switches to the activated state after two consecutive triggers. After Autohold is activated, the vehicle status signal is collected in real time. The collected status signals include the vehicle speed signal and the brake pedal signal. When the vehicle speed is close to 0 or equal to 0 and the brake pedal is stepped on, the Autohold function is enabled at this time, otherwise the Autohold function is always kept in the activated state. The continuous triggering of the button is collected twice or more within the set time and is less than the number threshold. The set time is generally a very short time to collect the continuous triggering button to avoid the problem of inaccurate recognition caused by a long time interval between the two triggers. Therefore, two consecutive triggers in a short time are set as the trigger switching signal of the Autohold function. The minimum time range is usually set to about one second, that is, the interval between two triggers can be used. If the time interval between two triggers is less than 1s, it means that the trigger is continuous. At this time, it is determined that there is a need to switch the Autohold function to activate or deactivate. The Autohold function is switched to activate or deactivate according to the trigger signal.

[0030] In a preferred embodiment, when the vehicle is stationary, if the fusion button is triggered once within a set time, the actuator is started to realize the electronic parking function. That is, when the vehicle is in the starting state and it is detected that the fusion button is triggered once, it is judged that the driver has a demand for electronic parking brake. At this time, the parking controller executes the electronic parking brake function and drives the actuator to execute to realize the electronic parking function.

[0031] In order to improve the driving safety of the vehicle, when the vehicle is in driving state, if the fusion button is triggered and the single trigger duration is greater than the set time threshold, it is judged that the vehicle is in an abnormal braking state, and the vehicle braking function is realized by the actuator. In order to solve the problem that the brake pedal is abnormal during the driving process of the vehicle and the braking control cannot be realized, the emergency braking function is integrated into the fusion button. When the fusion button is triggered and has been in the triggered state and the trigger duration reaches the set threshold, it means that the driver has a corresponding emergency braking demand. At this time, the parking controller drives the actuator to achieve the purpose of braking. Because when the fusion button is triggered normally, its trigger time is short, but when the trigger time continues, it means that the fusion button has been pressed and triggered, which is an emergency situation. In this case, it is considered to have an emergency braking demand. At this time, the parking controller controls the actuator to brake, thereby improving the safety of the vehicle. Braking in an emergency is realized, which improves the safety and reliability of driving.

[0032] In a preferred embodiment of the present application, when the vehicle is driving, there is a situation where the fusion button is triggered by mistake, and it is necessary to identify this situation to avoid safety hazards caused by false triggering. When the vehicle is driving, that is, when the speed is not 0, if the fusion button is triggered and the number of triggers is only once within the set time threshold and the trigger duration is less than the set time threshold, then the fusion button is judged to be a false trigger and the trigger is ignored. The function of the fusion button is to realize the electronic parking brake. If the brake is falsely triggered when the vehicle is moving, it will cause unnecessary safety hazards. Therefore, this state is identified. If the fusion button is triggered when the speed is not 0, and it is only triggered once within the set time and the trigger duration is less than the set time threshold, it can be judged that the fusion button is triggered, and it is only triggered once, and the trigger time is less than the duration set for the emergency brake, then it is judged that this is a false trigger. When it is falsely triggered, the parking controller directly ignores the triggering of the fusion button, does not perform any operation, and does not perform any execution, thereby avoiding the impact of false triggering on vehicle driving safety.

[0033] In a preferred embodiment of the present application, the driving state of the vehicle is collected, the priority of the Autohold function and the electronic parking function is set according to the driving state of the vehicle, and the functions are executed according to the priority. Because the safety and reliability of the Autohold function and the electronic parking function for the whole vehicle are different in different states of the vehicle, different priorities of the Autohold function and the electronic parking function are set in different driving states of the vehicle to meet the different needs of the vehicle. Priorities are set according to the importance and safety of the functions. When the vehicle is driving, the system will give priority to ensuring the stability of the electronic parking brake (EPB) to prevent accidental movement of the vehicle. When the vehicle is parked and needs to remain stationary, the system will give priority to ensuring the normal operation of the automatic parking (Auto Hold) function. This priority setting can ensure the stability and safety of key functions under different driving conditions.

[0034] In another preferred embodiment of the present application, the triggering of the fusion button is monitored to determine whether the triggering is in abnormal operation. If so, the locking mechanism mode is entered. In the locking mechanism mode, the fusion button function is disabled. Since the fusion button belongs to the parking function button, if it is frequently and uncontrollably triggered by mistake, it will affect the safety of the whole vehicle and the life of the button. Therefore, the triggering is monitored. If the number of continuous triggering of the fusion button within the set time range is greater than the set number threshold, it is judged that it is an abnormal operation at this time and enters the locking mechanism mode. Since the activation of the Autohold function is two or more times and less than the number threshold, the number threshold here is generally not too much, two or three times is optimal, that is, the number threshold is set to 3. When the continuous triggering is greater than 3 times within the set time range, it is judged that it is an abnormal operation at this time and enters the locking mechanism mode. After entering the locking mechanism mode, the parking controller drives and controls the vehicle to make an abnormal reminder, and sends an abnormal operation of the fusion button trigger in the vehicle instrument, suspends the fusion button function, and reminds the user of the current state. Then the vehicle's power on / off or ignition status is detected. When the vehicle is turned off or the high voltage is turned off and then restarted or the high voltage is turned on again, the function of the fusion key is restored, so as to avoid the impact of abnormal user operation. This implements function locking. When an abnormal operation is detected, the system may temporarily lock the key function or restrict further operation. This locking mechanism prevents the user from making additional inputs when the system is not yet stable, avoiding misoperation or functional conflicts. For example, when the system recognizes too frequent key inputs, it will enter protection mode and disable the key function until the system returns to normal. This measure helps prevent the impact of user error operations on system functions, while providing time for the system to resume normal operation.

[0035] like Figure 2As shown, this solution realizes the activation and deactivation of the Auto Hold function on the EPB button. It is necessary to press the button twice in succession as the state transition mark of the Auto Hold function under the premise of ensuring the normal execution of the EPB function. When the Auto Hold function is activated, it can be divided into two specific situations: activation in the dynamic state of the vehicle and activation in the static state of the vehicle.

[0036] In dynamic conditions, if the vehicle is driving, pressing the button twice in succession will not affect the vehicle's driving and the Auto Hold function can be activated normally. In static conditions, if the vehicle speed is zero and the brake pedal is pressed, pressing the button twice in succession will have no effect on the vehicle and the Auto Hold function can be activated normally.

[0037] During operation, the wheel speed sensor continuously monitors and collects the vehicle's wheel speed signals. These raw signals are processed into vehicle speed data through a precise conversion mechanism. The system combines these vehicle speed data with the signal from the brake pedal and inputs them into the central control unit. The unit performs detailed analysis and calculations on the vehicle speed data and brake pedal signal to determine whether the preset Auto Hold function activation conditions are met.

[0038] At this stage, the system will generate a standardized message with the calculation results and send it to the ESP (Electronic Stability Program) controller through the vehicle's communication network. The ESP controller will further process the data and wait for the user's operation confirmation. The user needs to press the designated activation button twice in succession. This operation step is used to confirm the user's intention and prevent accidental activation.

[0039] If the system confirms that all activation conditions have been met and the user's operation is correct, the Auto Hold function will be officially activated. After the function is activated, the central control unit will send a status message to the instrument panel through the vehicle bus and light up the LED indicator on the button. This information feedback mechanism provides the driver with a clear indication of the function status, allowing him to understand the activation status of the Auto Hold function in real time.

[0040] The information displayed on the instrument panel and the lighting of the LED indicator light allow the driver to intuitively understand the working status of the AutoHold function, thereby obtaining clearer and more timely vehicle status feedback. This precise feedback system improves driving safety and convenience, allowing the driver to be more confident and calm when operating and monitoring the vehicle.

[0041] Arbitration mode: When the system detects abnormal operation by the user (such as continuous and rapid key presses), the arbitration mode will be activated to handle possible function conflicts and operation abnormalities:

[0042] Priority setting: The system sets priorities based on the importance and safety of functions. For example, when the vehicle is in motion, the system will prioritize the stability of the Electronic Parking Brake (EPB) to prevent the vehicle from moving unexpectedly. When the vehicle is parked and needs to remain stationary, the system will prioritize the normal operation of the Auto Hold function. This priority setting ensures the stability and safety of key functions under different driving conditions.

[0043] Function lock: The system may temporarily lock key functions or restrict further operations when abnormal operations are detected. This locking mechanism prevents users from making additional inputs before the system is stable, avoiding misoperation or function conflicts. For example, when the system recognizes too frequent key inputs, it will enter protection mode and disable key functions until the system returns to normal. This measure helps prevent user errors from affecting system functions while providing time for the system to return to normal operation.

[0044] 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. A fusion-type automobile automatic parking control system, characterized in that: It includes a fusion button, a parking controller, and an actuator; the fusion button is connected to the parking controller, the parking controller is connected to the actuator, and the parking controller performs the Autohold function and the electronic parking function based on the triggering state of the fusion button and drives the actuator to work to realize the Autohold function and / or the electronic parking function.

2. The integrated automobile automatic parking control system according to claim 1, characterized in that: The parking controller is connected to the vehicle-mounted sensor and is used to obtain vehicle status data.

3. A fusion-type automobile automatic parking control system as claimed in claim 1 or 2, characterized in that: The parking controller is connected to the vehicle instrument panel and is used to display the activation status of the Autohold function and the electronic parking function triggered by the fusion button.

4. A control method of a fusion-type automobile automatic parking control system according to any one of claims 1 to 3, characterized in that: include: The parking controller drives the actuator to realize the vehicle's Autohold function and electronic parking function; The parking controller obtains the trigger signal of the fusion button to determine whether the Autohold function is activated and whether the electronic parking function is activated.

5. The control method of the integrated automobile automatic parking control system as claimed in claim 4, characterized in that: The Autohold function triggered by the integrated button and the status of the electronic parking function are displayed and reminded through the on-board instrument panel.

6. The control method of the integrated automobile automatic parking control system according to claim 4 or 5, characterized in that: If the fusion button is triggered twice or more within the set time, the Autohold function will be activated. After the Autohold function is activated, the vehicle status is monitored in real time. When the vehicle meets the Autohold function enabling working status, the corresponding function is executed through the actuator.

7. The control method of the integrated automobile automatic parking control system as claimed in claim 6, characterized in that: When the vehicle is stationary, if the fusion button is triggered once within the set time, the actuator will start to realize the electronic parking function; when the vehicle is in driving state, if the fusion button is triggered and the single trigger duration is greater than the set time threshold, the vehicle is judged to be in an abnormal braking state, and the vehicle braking function is realized through the actuator.

8. The control method of the integrated automobile automatic parking control system as claimed in claim 7, characterized in that: When the vehicle is driving, if the fusion button is triggered and the triggering number is only once within the set time threshold and the triggering duration is less than the set time threshold, the fusion button is judged to be a false trigger and the triggering is ignored.

9. The control method of the integrated automobile automatic parking control system according to claim 7 or 8, characterized in that: The vehicle's driving status is collected, and the priority of the Autohold function and the electronic parking function is set according to the vehicle's driving status, and the functions are executed according to the priority.

10. The control method of the integrated automobile automatic parking control system as claimed in claim 9, characterized in that: The triggering of the fusion button is monitored to determine whether the triggering is in abnormal operation. If so, a locking mechanism mode is entered. In the locking mechanism mode, the fusion button function is disabled.

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