CN111089167A - Control method, device, controller, system and vehicle for vehicle P parking - Google Patents

Abstract

The invention discloses a control method, a device, a controller, a system and a vehicle for vehicle P-gear parking, wherein the control method for the vehicle P-gear parking comprises the following steps: after a P gear locking instruction is received, detecting whether the current speed of the vehicle is smaller than a preset speed threshold value and whether the gradient of a road surface where the vehicle is located at present is larger than a preset gradient threshold value; when the current speed is detected to be smaller than a preset speed threshold value and the gradient is detected to be larger than a preset gradient threshold value, whether an electronic parking brake system of the vehicle is in a parking state is detected; when the electronic parking brake system is detected to be in a parking state, detecting whether a brake is in a stepping-on state; and when the brake is detected not to be in a treading state, controlling the vehicle to execute P gear lock stopping according to the P gear lock-up instruction. The invention can avoid the P gear lock from being locked because the vehicle is parked on the slope in the P gear.

Description

Control method, device, controller, system and vehicle for vehicle P parking

technical field

The present invention relates to the technical field of vehicles, and in particular, to a control method, device, controller, system and vehicle for parking in the P-block of a vehicle.

Background technique

P gear is the most common gear in automatic transmission models. It is generally located at the front of the shift console and in front of R gear. The purpose is to lock the axle of the front wheel of the vehicle through the gear when the car is stationary on the slope. . The "P" in the P block comes from the first letter in the English word park, so in the gear position of an automatic transmission car, the P block is the sign of the parking block, and the P block is evolved on the basis of the N block. coming block. When the driver operates the vehicle to enter the P position, the vehicle's transmission will be placed in neutral mode and the vehicle's P lock will be locked. Specifically, the structure of the P-block lock is a pawl provided inside the gearbox, which locks the gear on the output shaft of the gearbox to form a mechanical lock, thereby locking the vehicle connected to the output shaft The axle of the front wheel, so that the front wheel of the vehicle cannot be rotated, which plays the role of fixing the stationary or micro-moving vehicle. Among them, the process of the driver operating the P gear is as follows: when the vehicle is on a slope and needs to remain stationary, the driver first steps on the brakes, and the vehicle's braking system will brake the front and rear wheels or only the front wheels, so that the vehicle is basically Stop, and then press the P block switch, the vehicle will control the P block lock to lock, so that the front wheel of the vehicle cannot turn and the vehicle stops, at this time the driver can release the brake.

In the process of implementing the present invention, the inventor found that the following technical problems existed in the prior art: when the vehicle was parked on the slope through the P block, when the driver released the brake, the P block lock would alone assume the responsibility of the vehicle in the P block. The full downhill force on the ramp will easily cause the locking mechanism of the P-block lock to be difficult to pull out and stuck after the output shaft of the gearbox is buckled.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a control method, device, controller, system and vehicle for parking in the P block of a vehicle, which can effectively solve the problem that the P block lock card will appear when a vehicle on a slope in the prior art is parked in the P block. Dead technical issues.

An embodiment of the present invention provides a control method for a vehicle to park in the P block, which includes:

After receiving the P gear locking instruction, detect whether the current speed of the vehicle is less than the preset speed threshold and whether the gradient of the road where the vehicle is currently located is greater than the preset gradient threshold;

When it is detected that the current speed is less than a preset speed threshold and the gradient is greater than a preset gradient threshold, detecting whether the electronic parking brake system of the vehicle is in a parking state;

When it is detected that the electronic parking brake system is in a parking state, detecting whether the brake is in a depressed state;

When it is detected that the brake is not in a depressed state, the vehicle is controlled to perform a P-block locking action according to the P-block locking instruction.

As an improvement of the above scheme, the control method further includes:

When it is detected that the current speed is less than the preset speed threshold and the gradient is less than the preset gradient threshold, the vehicle is controlled to execute the P block locking action according to the P block locking instruction.

As an improvement of the above scheme, the control method further includes:

When it is detected that the electronic parking brake system is not in the parking state, the vehicle is controlled to issue a prompt to enter the electronic parking to the driver.

As an improvement of the above scheme, the control method further includes:

When it is detected that the brake is in the pressed state, the display device controlling the vehicle displays the information that the P block is being locked until it is detected that the brake is not in the pressed state.

As an improvement of the above solution, when it is detected that the brake is not in the depressed state, the steps of controlling the vehicle to perform the P-block locking action according to the P-block locking instruction include:

When it is detected that the brake is not in the pressed state, detect whether the automatic parking system is in the hydraulic braking state;

When it is detected that the automatic parking system is in the hydraulic braking state, the display device controlling the vehicle displays the information that the P gear is being locked until it is detected that the automatic parking system is not in the hydraulic braking state;

When it is detected that the automatic parking system is not in a hydraulic braking state, the vehicle is controlled to perform a P-block locking action according to the P-block locking instruction.

As an improvement of the above scheme, the control method further includes:

After receiving the unlocking command of the P block lock, detect the working state of the electronic parking brake system;

When it is detected that the electronic parking brake system starts to enter the release state or the electronic parking brake system is detected to be in the parking state, detecting whether the gradient of the road on which the vehicle is currently located is greater than a preset gradient threshold;

When detecting that the gradient is greater than a preset gradient threshold, detecting whether the brake is in a depressed state;

When it is detected that the brake is in a depressed state, the vehicle is controlled to execute the P-block unlocking action according to the P-block unlocking instruction.

Another embodiment of the present invention correspondingly provides a control device for parking a vehicle in the P block, which includes:

a first detection module, configured to detect whether the current speed of the vehicle is less than a preset speed threshold and whether the gradient of the road on which the vehicle is currently located is greater than a preset gradient threshold after receiving the P gear locking instruction;

a second detection module, configured to detect whether the electronic parking brake system of the vehicle is in a parking state when it is detected that the current speed is less than a preset speed threshold and the gradient is greater than a preset gradient threshold;

a third detection module, configured to detect whether the brake is in a depressed state when it is detected that the electronic parking brake system is in a parking state;

The first execution module is configured to control the vehicle to execute the P-block locking action according to the P-block locking instruction when it is detected that the brake is not in the depressed state.

Another embodiment of the present invention provides a controller for parking a vehicle in the P range, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor executing the When the computer program is implemented, the control method for parking the vehicle in the P block according to the embodiment of the invention is realized.

Another embodiment of the present invention provides a control system for parking a vehicle in P block, which includes: a controller, an electronic parking brake system, a P block switch, a P block lock device, and a braking system; wherein,

The electronic parking brake system is connected to the controller and used to send the detected parking state information to the controller;

the P-block switch, which is connected to the controller and used to issue a P-block locking instruction to the controller when it is closed or disconnected;

the P block locking device, which is connected to the controller and used to perform the P block locking action and the P block unlocking action under the control of the controller;

the braking system, which is connected to the controller and used to send the detected braking state information to the controller;

The controller includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, when the processor executes the computer program, the vehicle according to the above embodiments of the invention is implemented P parking control method.

Another embodiment of the present invention provides a vehicle, which includes the vehicle P parking control system according to the embodiment of the present invention.

Compared with the prior art, the control method, device, controller, system and vehicle for parking in the P-block of the vehicle provided by the embodiments of the present invention detect the current speed of the vehicle after receiving the P-block locking instruction. Whether it is less than a preset speed threshold and whether the gradient of the road where the vehicle is currently located is greater than a preset gradient threshold; when it is detected that the current speed is less than the preset speed threshold and the gradient is greater than the preset gradient threshold, detect Whether the electronic parking brake system of the vehicle is in the parking state; when it is detected that the electronic parking brake system is in the parking state, it is detected whether the brake is in the depressing state; when it is detected that the brake is not in the depressing state, The vehicle is controlled to perform a P-block locking action according to the P-block locking instruction. It can be seen from the above analysis that, in the embodiment of the present invention, when the driver steps on the brake to make the vehicle on the slope basically stop and then presses the P-lock switch, the speed of the vehicle and the slope of the road where it is located are detected first to detect the speed of the vehicle. Check whether the vehicle is parked on a ramp and whether the ramp where the vehicle is located will cause the P block of the vehicle to be stuck, and then detect the parking state of the electronic parking brake system to ensure the electronic parking brake. The system locks the rear wheels of the vehicle before the P block locks the front wheels of the vehicle, and then detects the braking state of the vehicle to ensure that the downhill force of the vehicle has been fully borne by the electronic parking brake system, and finally gets up. The P-block lock ensures that the P-block lock will not bear the excessive downhill force of the vehicle on the ramp after it is locked, so as to avoid the P-block lock being stuck because the vehicle is parked in the P-block on the ramp.

Description of drawings

FIG. 1 is a schematic flowchart of a control method for parking a vehicle in the P block provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of another method for controlling a vehicle to park in the P block according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a control device for parking a vehicle in P block according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another control device for parking in the P block of a vehicle provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a control system for parking a vehicle in a P position according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1, it is a schematic flowchart of a control method for parking a vehicle in P block provided by an embodiment of the present invention. The control method for parking a vehicle in P block provided in this embodiment is performed when the driver operates the vehicle on a slope. Executed by the vehicle in the process of parking in block P, the control method for the vehicle to execute the parking in block P of the vehicle may be implemented by software and/or hardware, and the vehicle may be a fuel vehicle, an electric vehicle or a gasoline-electric hybrid car etc.

Wherein, when the driver operates the vehicle to park in the P block on the slope, in order to avoid the P block lock being stuck by the downhill force of the vehicle alone, the driver should operate according to the following operation methods provided by the embodiments of the present invention:

(1) When the vehicle needs to be parked in gear P on a slope, first, the driver steps on the brakes, and the front and rear wheels of the vehicle are braked at the same time through the braking system (of course, the braking system can also only make the front wheels brake) , and make the vehicle basically stop, and after the vehicle brakes stop, the driver keeps the brake pressed; (2) then the driver pulls up the electronic parking brake switch of the Electronic Parking Brake (EPB, Electrical Parking Brake) , so that the electronic parking brake system brakes the rear wheels of the vehicle. Since the braking system brakes the front and rear wheels of the vehicle at this time, the braking system will also bear most of the downhill force of the vehicle, and the electronic parking brake system The car braking system will bear part of the downhill force of the vehicle; (3) then the driver releases the brakes, so that the front wheels of the vehicle are no longer braked by the braking system, and the electronic parking brake system passes the braking The rear wheel of the vehicle continues to stop. At this time, the downhill force of the entire vehicle will be borne by the electronic parking brake system, and the front wheel part of the vehicle will no longer bear the downhill force of the vehicle. The wheels remain stationary and no longer have a tendency to roll downhill, so that the front axle of the vehicle and the output shaft of the gearbox connected to the front axle remain stationary and no longer have a tendency to rotate; (4) when the driver loosens After the brake is completed, the driver operates the vehicle to enter the P gear (the operation method can be: by pressing the P gear switch or by pushing the push rod to enter the P gear, etc.), at this time, because the output shaft of the gearbox no longer has the ability to rotate. Therefore, when the vehicle enters the P gear and the P-block lock of the vehicle locks the output shaft, the P-block lock will not be stuck with the output shaft. In simplification, the overall process of the above-mentioned operation method for the driver to operate the vehicle to park in the P position on the ramp is: the vehicle is running, the brake is applied to decelerate, the brake is not released after parking, the electronic parking brake switch is pulled up, and the brake is released. "Press the P switch.

Among them, the above-mentioned operation method for the driver to operate the vehicle to park in the P-block on a slope, the actual principle of "preventing the P-block lock from being stuck by the downhill force of the vehicle alone" is: when parking in the P-block , use the electronic parking brake system of the vehicle to assist the vehicle to park, and release the brake after the electronic parking brake system performs parking, so that the electronic parking brake system can withstand the downhill force of the entire vehicle, Therefore, after the P block is locked, it will not bear the downhill force of the vehicle, thereby preventing the P block lock from being stuck when the vehicle is parked in the P block on the slope.

It should be noted that the use of the electronic parking brake system to assist the parking of the vehicle does not necessarily prevent the P-block lock from being stuck when the vehicle is parked in the P-block on a slope. For example, when the driver operates the vehicle to park in the P position on the slope, the operation methods are as follows:

(1) The P-block lock bears all the downhill force of the vehicle: the vehicle is running > step on the brake to decelerate > the brake is not released after parking > press the P gear switch > release the brake > pull up the electronic parking brake switch.

Specifically, after the vehicle brakes and stops on the slope, the P block switch is pressed first, so when the driver releases the brake, all the downhill force of the vehicle will be transferred to the front wheel part and fully absorbed by the P block lock. The rear wheels no longer have the tendency to roll, so even if the electronic parking brake switch is pulled and the electronic parking brake system brakes the rear wheels, the electronic parking brake system will not share the downhill force of the vehicle.

(2) The P-block lock bears half of the downhill force of the vehicle: the vehicle is running > step on the brake to decelerate > the brake is not released after parking > pull up the electronic parking brake switch > press the P gear switch > release the brake >.

Specifically, after the vehicle brakes and stops on a slope, the electronic parking brake system brakes the rear wheels because the electronic parking brake switch is pulled up first, and then the P block switch is pressed to make the P block lock to brake the front wheels , because the electronic parking brake switch is pulled up and the brake is not released first, so the electronic parking brake system will not bear all the downhill force of the vehicle, because the downhill force of the vehicle is still borne by the brake system at this time, so When the electronic parking brake system brakes the rear wheels and the P block locks brakes the front wheels, and then releases the brakes, all the downhill force of the vehicle will be shared by the electronic parking brake system and the P block lock.

When the vehicle is parked in P gear on a slope, in order to ensure that the vehicle is parked in P gear only after the driver performs the correct P gear parking operation, in the embodiment of the present invention, the above-mentioned vehicle P gear is provided. Parking control method. Specifically, as shown in FIG. 1 , the control method for parking the vehicle in the P position includes steps S10 to S13:

S10, after receiving the P gear locking instruction, detect whether the current speed of the vehicle is less than a preset speed threshold and whether the gradient of the road where the vehicle is currently located is greater than the preset gradient threshold.

Specifically, when the vehicle is driving on a ramp (it can be an up-slope or a down-slope), if the driver needs the vehicle to park in the P gear on the ramp, the driver will first step on the brakes to make the vehicle basically stop.

When the vehicle is basically stopped, the driver can start the vehicle to enter the P block by pressing the P block lock switch or pushing the push rod to the P block. Issue the P gear locking instruction, when the controller receives the P gear locking instruction, the controller detects whether the current speed of the vehicle is less than the preset speed threshold and whether the slope of the road where the vehicle is currently located is greater than Preset gradient threshold to detect whether the vehicle is parked on a slope and whether the slope the vehicle is on will cause the vehicle's P-block to lock when the vehicle is parked in P-block.

S11, when it is detected that the current speed is less than a preset speed threshold and the gradient is greater than a preset gradient threshold, detect whether the electronic parking brake system of the vehicle is in a parking state.

In this embodiment, the electronic parking brake system needs to be in a parking state in advance after the vehicle is braked and stopped and before the P block lock is locked. Therefore, when it is detected that the current speed is less than the preset speed threshold and the gradient is greater than the preset gradient threshold (indicating that the vehicle has stopped on the slope and the slope where the vehicle is located will lock the P block of the vehicle on the vehicle It is stuck when the vehicle is parked in P block), at this time, it is detected whether the electronic parking brake system of the vehicle is in the parking state.

S12 , when it is detected that the electronic parking brake system is in a parking state, it is detected whether the brake is in a depressed state.

Wherein, when it is detected that the electronic parking brake system is in the parking state, it indicates that the electronic parking brake system has braked the rear wheels of the vehicle, and at the same time indicates that the driver can release the brakes, and at this time, it is detected whether the brakes are in the state of being stepped on. down state.

S13 , when it is detected that the brake is not in the depressed state, control the vehicle to perform a P-block locking action according to the P-block locking instruction.

Wherein, when it is detected that the brake is not in the depressed state, it indicates that the electronic parking brake system has endured all the downhill force of the vehicle on the slope, and at this time, the vehicle can be controlled to execute the P gear according to the P gear locking instruction The locking action makes the P-block lock locked, thereby completing the P-block parking operation of the vehicle.

In the embodiment of the present invention, when the driver steps on the brake to make the vehicle on the slope basically stop and then presses the P lock switch, firstly, it is detected whether the vehicle is on the slope by detecting the speed of the vehicle and the slope of the road on which it is located. Stop on the road and whether the slope of the vehicle will cause the P block lock of the vehicle to be stuck, and then detect the parking state of the electronic parking brake system to ensure that the electronic parking brake system is locked in the P block. Before locking the front wheels of the vehicle, first lock the rear wheels of the vehicle, and then detect the braking state of the vehicle to ensure that the downhill force of the vehicle has been fully borne by the electronic parking brake system, and finally lock the P block. This ensures that the P-block lock will not be subjected to excessive downhill force on the ramp after the P-block lock is locked, thereby preventing the P-block lock from being stuck because the vehicle is parked in the P-block on the ramp.

In the embodiment of the present invention, optionally, the control method further includes step S11':

S11', when it is detected that the current speed is less than a preset speed threshold and the gradient is less than a preset gradient threshold, control the vehicle to perform a P block locking action according to the P block locking instruction.

Specifically, after step S10, when it is detected that the current speed is less than the preset speed threshold and the gradient is less than the preset gradient threshold, it indicates that the vehicle has stopped on the road, and the road on which the vehicle is located (for example, a flat The slope of the road) is not enough to make the P block lock of the vehicle stuck when the vehicle is parked in P block, so at this time, the vehicle can be directly controlled to execute the P block locking action according to the P block lock instruction.

In the embodiment of the present invention, preferably, the control method further includes step S12':

S12', when it is detected that the electronic parking brake system is not in the parking state, the vehicle is controlled to issue a prompt to the driver to enter electronic parking.

Specifically, after step S11, when it is detected that the electronic parking brake system is not in the parking state, it indicates that the electronic parking brake system has not braked the rear wheels of the vehicle, even if the driver operates When the vehicle enters the P gear and sends the P gear locking instruction to the controller, the controller will not control the vehicle according to the P gear locking instruction after receiving the P gear locking instruction Execute the P block locking action, but control the vehicle to send a please enter the electronic parking prompt to the driver, and let the driver pull up the electronic parking brake switch to make the electronic parking brake system enter the parking state, Therefore, when the vehicle is parked in the P-block on a slope, the P-block lock can be prevented from being stuck due to the absence of the electronic parking brake system to assist the parking.

In the embodiment of the present invention, preferably, the control method further includes step S13':

S13', when it is detected that the brake is in the depressed state, the display device controlling the vehicle displays the information that the P gear is being locked until it is detected that the brake is not in the depressed state.

In detail, after step S12, when it is detected that the brake is in the depressed state, it indicates that the P block lock cannot be locked at this time. At this time, the display device (such as a display screen or an indicator light, etc.) that controls the vehicle displays the information that the P gear is being locked until it is detected that the brake is not in the pressed state, so that the driver can see The P block can release the brake after the lock information. It should be noted that the information that the P block is being locked may be the word "P block" displayed on the display screen or the lighting of an indicator light, etc., which is not specifically limited here.

Since many vehicles currently have an automatic parking function (Auto Hold), when the vehicle is temporarily parked (for example, when the vehicle is temporarily parked (for example, when the vehicle is parked for a short period of time on up and down slopes or at traffic lights such as parking) and needs to be restarted after a short period of time, the vehicle can activate this function. , so that the automatic parking system automatically adopts the four-wheel hydraulic braking method for the vehicle to make the vehicle brake automatically, so that it is not necessary to pull the handbrake or enter the electronic parking brake, which can avoid the use of the handbrake or the electronic parking brake system. Simplified operation, automatic transmission models do not need to switch back and forth from D to N, D to P frequently. Among them, when the vehicle is parked in the P block on the slope, the automatic parking system of the vehicle is always in the working state. Specifically, when the electronic parking brake switch is pulled up and the brake is released, the P block lock is locked. Before, the automatic parking system was still in the hydraulic braking state. Since the automatic parking system hydraulically brakes the front and rear four wheels of the vehicle together, during the braking process, the front wheel part and the rear wheel part of the vehicle will The entire downhill force of the vehicle is shared, so even if the wheel and the driver release the brake after the electronic parking brake system is braked, the electronic parking brake system only bears the downhill force of a part of the vehicle, In this way, when the P block lock is locked and the automatic parking function is exited, the P block lock will be subjected to the downhill force of another part of the vehicle, thereby causing the P block lock to be stuck. In order to avoid this situation, in this embodiment of the present invention, the following improvement measures are provided: Specifically, the step S12 includes steps S120 to S122:

S120 , when it is detected that the brake is not in the depressed state, detect whether the automatic parking system is in the hydraulic braking state.

S121 , when it is detected that the automatic parking system is in the hydraulic braking state, the display device of the control vehicle displays the information that the P gear is being locked until it is detected that the automatic parking system is not in the hydraulic braking state.

When it is detected that the automatic parking system is in the hydraulic braking state, it indicates that the P block lock cannot be locked at this time. In order to facilitate the driver to know the current P block parking state of the vehicle, the driver can better perform the At this time, the display device (such as a display screen or an indicator light, etc.) that controls the vehicle displays the information that the P block is being locked until it is detected that the automatic parking system is not in the hydraulic braking state, so that the driver is watching The automatic parking function can be exited after the P gear is locked information. It should be noted that the information that the P block is being locked may be the word "P block" displayed on the display screen or the lighting of an indicator light, etc., which is not specifically limited here.

S122, when it is detected that the automatic parking system is not in a hydraulic braking state, control the vehicle to perform a P-block locking action according to the P-block locking instruction.

In this improved embodiment, by detecting the hydraulic braking state of the automatic parking system of the vehicle, and only when it is detected that the automatic parking system is not in the hydraulic braking state, the P block is locked. lock, so that the P block lock is stuck.

The control method for parking the vehicle in the P-position and the operation method for the driver to operate the vehicle to park in the P-position provided by the above embodiments of the invention are mainly aimed at the situation that the vehicle is parked in the P-position on a slope. When the vehicle exits the P-block parking state on a ramp, if the driver does not operate properly, it may cause the P-block lock to get stuck, resulting in the inability to exit the P-block.

In order to avoid the occurrence of this situation, the embodiment of the present invention also provides an operation method for the driver to operate the vehicle to exit the P-block parking state. Before the lock is unlocked, the driver first steps on the brake and keeps the brake pressed, then the driver operates the vehicle so that the electronic parking brake system starts to exit the parking state, and when the electronic parking brake system exits the parking state The driver can operate the vehicle to unlock the P-block lock during the process of exiting (including the two situations when the exit is still in progress or after exiting), or after the driver steps on the brake and before the electronic parking brake system exits the parking state. Since the P block lock is unlocked before the electronic parking brake system exits from parking, the P block lock will not bear the downhill force of the vehicle (by the electronic parking brake system and the braking system) when it is unlocked, so it can be Unlock smoothly; or because the P-block lock is unlocked when the electronic parking brake system exits the parking process, and the vehicle is braked by the braking system, the P-block lock will not withstand the downhill of the vehicle when it is unlocked. force (by the brake system alone, or by the electronic parking brake system and the brake system together), so that it can be unlocked smoothly.

In addition, in order to ensure that the vehicle is unlocked in the P block after the driver has correctly exited the P block parking operation, so as to prevent the P block lock from being stuck when the vehicle exits the P block parking, see FIG. 2 , an embodiment of the present invention The provided control method further includes steps S14 to S17:

S14, after receiving the P block lock unlocking instruction, detect the working state of the electronic parking brake system.

Wherein, the P block lock unlocking instruction may be sent by the vehicle to the controller according to the driver's unlocking operation. The unlocking operation includes: pushing the P gear to another gear (for example, N gear), or the driver pressing the P gear switch, or even the driver operating the vehicle to make the electronic parking brake system exit the parking state, etc. , which is not specifically limited here.

S15 , when it is detected that the electronic parking brake system starts to enter the release state or that the electronic parking brake system is in the parking state, detect whether the gradient of the road on which the vehicle is currently located is greater than a preset gradient threshold.

S16, when it is detected that the gradient is greater than a preset gradient threshold, detect whether the brake is in a depressed state.

When it is detected that the gradient is greater than the preset gradient threshold, it indicates that the gradient of the road where the vehicle is currently located will cause the P-block lock of the vehicle to be stuck, and at this time, it is detected whether the brake is in a depressed state.

Optionally, when it is detected that the gradient is less than a preset gradient threshold, the vehicle may be controlled to unlock the P block lock directly according to the P block unlock instruction or not to respond to the block unlock instruction.

S17 , when it is detected that the brake is in a depressed state, control the vehicle to perform an unlocking action of the P gear according to the P gear unlocking instruction.

Specifically, when it is detected that the brake is in the depressed state, it indicates that the downhill force of the vehicle is being borne by the brake system (if the electronic parking brake system has not exited from parking at this time, the electronic parking brake system will also bear The downhill force of the vehicle), at this time, the vehicle can be controlled to perform the P-block unlocking action according to the P-block unlocking instruction, so that the P-block lock can be unlocked smoothly.

Wherein, when the P block lock is unlocked, the vehicle can control the display device of the vehicle (such as a display screen or an indicator light, etc.) to display the N block information, indicating to the driver that the P block has been unlocked and the vehicle is currently in neutral. , wherein the N block information may be the word "N block" displayed on the display screen or the luminous color of the indicator light, etc., which is not specifically limited here.

In the embodiment of the present invention, by detecting the working state of the electronic parking brake system and detecting the braking state of the braking system, it is ensured that the unlocking action of the P block lock is performed under the following conditions: the vehicle is in a braking state, and the electronic parking brake system is in a braking state. The car braking system should be in the parking state or release state as far as possible, so as to ensure that the P block lock can be unlocked smoothly when the vehicle exits the P block parking.

Referring to FIG. 3 , another embodiment of the present invention correspondingly provides a control device for parking a vehicle in P block, which includes:

The first detection module 10 is configured to detect whether the current speed of the vehicle is less than a preset speed threshold and whether the gradient of the road where the vehicle is currently located is greater than the preset gradient threshold after receiving the P gear locking instruction;

The second detection module 11 is configured to detect whether the electronic parking brake system of the vehicle is in a parking state when it is detected that the current speed is less than a preset speed threshold and the gradient is greater than a preset gradient threshold;

The third detection module 12 is configured to detect whether the brake is in the depressed state when it is detected that the electronic parking brake system is in the parking state;

The first execution module 13 is configured to control the vehicle to perform a P-block locking action according to the P-block locking instruction when it is detected that the brake is not in a depressed state.

As an improvement of the above scheme, the control device further includes:

The response module is configured to control the vehicle to perform a P-block locking action according to the P-block locking instruction when it is detected that the current speed is less than a preset speed threshold and the gradient is less than a preset gradient threshold.

As an improvement of the above scheme, the control device further includes:

The first control module is configured to control the vehicle to send a prompt to the driver to enter the electronic parking when it is detected that the electronic parking brake system is not in the parking state.

As an improvement of the above scheme, the control device further includes:

The second control module is configured to control the display device of the vehicle to display the information that the P gear is being locked when it is detected that the brake is in the depressed state, until it is detected that the brake is not in the depressed state.

As an improvement of the above scheme, the first execution module 13 includes:

The detection unit is used to detect whether the automatic parking system is in the hydraulic braking state when it is detected that the brake is not in the depressed state;

The control unit is used to control the display device of the vehicle to display the information that the P gear is being locked when it is detected that the automatic parking system is in the hydraulic braking state, until it is detected that the automatic parking system is not in the hydraulic braking state;

The execution unit is configured to control the vehicle to execute the P-block locking action according to the P-block locking instruction when it is detected that the automatic parking system is not in the hydraulic braking state.

As an improvement of the above scheme, referring to Fig. 4, the control device further includes:

The fourth detection module 14 detects the working state of the electronic parking brake system after receiving the P-block lock unlocking instruction;

The fifth detection module 15 is used to detect whether the gradient of the road on which the vehicle is currently located is greater than a preset value when it is detected that the electronic parking brake system begins to enter the release state or the electronic parking brake system is detected to be in the parking state slope threshold;

The sixth detection module 16 is configured to detect whether the brake is in a depressed state when it is detected that the gradient is greater than a preset gradient threshold;

The second execution module 17 is configured to control the vehicle to execute the P-block unlocking action according to the P-block unlocking instruction when it is detected that the brake is in a depressed state.

In the embodiment of the present invention, when the driver steps on the brake to make the vehicle on the slope basically stop and then presses the P lock switch, firstly, it is detected whether the vehicle is on the slope by detecting the speed of the vehicle and the slope of the road on which it is located. Stop on the road and whether the slope of the vehicle will cause the P block lock of the vehicle to be stuck, and then detect the parking state of the electronic parking brake system to ensure that the electronic parking brake system is locked in the P block. Before locking the front wheels of the vehicle, first lock the rear wheels of the vehicle, and then detect the braking state of the vehicle to ensure that the downhill force of the vehicle has been fully borne by the electronic parking brake system, and finally lock the P block. This ensures that the P-block lock will not be subjected to excessive downhill force on the ramp after the P-block lock is locked, so that the P-block lock will not be stuck because the vehicle is parked in the P-block on the ramp.

Referring to FIG. 5 , another embodiment of the present invention provides a control system for parking a vehicle in P block, which includes: a controller 1 , an electronic parking brake system 4 , a P block switch 2 , a P block lock device 3 and a brake System 5; wherein, the electronic parking brake system 4 is connected to the controller 1 and used to send the detected parking status information to the controller 1; the P gear switch 2 is connected to the controller 1. The controller 1 is connected and used to issue a P block locking instruction to the controller 1 when it is closed or disconnected; the P block lock device 3 is connected to the controller 1 and used to The P block locking action and the P block unlocking action are performed under the control of the brake system 5; the brake system 5 is connected with the controller 1 and is used to send the detected brake state information to the controller 1; the controller 1, comprising a processor 100, a memory 101, and a computer program stored in the memory 101 and configured to be executed by the processor 100, when the processor 100 executes the computer program, the above-mentioned embodiments of the invention are implemented The control method of the vehicle's P block parking. Alternatively, when the processor 100 executes the computer program, the functions of the modules/units in the foregoing device embodiments are implemented.

Specifically, the electronic parking brake system 4 includes an electronic parking brake switch 42, an electronic parking controller 41 and an electronic parking brake device 43; the electronic parking brake switch 42 and the The electronic parking brake devices 43 are all connected to the electronic parking controller 41 ; the electronic parking controller 41 is used to control the electronic parking brake device 43 according to the switch signal of the electronic parking brake switch 42 The action of braking the vehicle is also used to send the detected electronic parking state information to the controller 1 .

Optionally, the control system for parking the vehicle in P block further includes the above-mentioned automatic parking system 6, which is connected to the controller 1 and is used to detect the detected hydraulic braking state. Information is sent to the controller 1 .

Exemplarily, the computer program may be divided into one or more modules/units, and the one or more modules/units are stored in the memory and executed by the processor to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the control device for parking the vehicle in the P position.

The processor may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf processors Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory can be used to store the computer program and/or module, and the processor implements the vehicle by running or executing the computer program and/or module stored in the memory and calling the data stored in the memory Various functions of the control device for parking in the P range. The memory may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the storage data area may store Data (such as audio data, phonebook, etc.) created according to the usage of the mobile phone, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory such as hard disk, internal memory, plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card , a flash memory card (Flash Card), at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

Wherein, if the integrated modules/units of the control device for parking in the P-position of the vehicle are implemented in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on this understanding, the present invention can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the program is executed by the processor, the steps of the foregoing method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disc, a computer memory, a read-only memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Electric carrier signals and telecommunication signals are not included.

It should be noted that the device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical unit, that is, it can be located in one place, or it can be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. In addition, in the drawings of the apparatus embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative effort.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made, and these improvements and modifications may also be regarded as It is the protection scope of the present invention.

Claims (10)

1. a control method for vehicle P block parking, is characterized in that, comprises: After receiving the P gear locking instruction, detect whether the current speed of the vehicle is less than the preset speed threshold and whether the gradient of the road where the vehicle is currently located is greater than the preset gradient threshold; When it is detected that the current speed is less than a preset speed threshold and the gradient is greater than a preset gradient threshold, detecting whether the electronic parking brake system of the vehicle is in a parking state; When it is detected that the electronic parking brake system is in a parking state, detecting whether the brake is in a depressed state; When it is detected that the brake is not in a depressed state, the vehicle is controlled to perform a P-block locking action according to the P-block locking instruction. 2 . The control method for parking in the P-block of a vehicle according to claim 1 , wherein the control method further comprises: 2 . When it is detected that the current speed is less than the preset speed threshold and the gradient is less than the preset gradient threshold, the vehicle is controlled to execute the P block locking action according to the P block locking instruction. 3. The control method for parking the vehicle in the P block of claim 1, wherein the control method further comprises: When it is detected that the electronic parking brake system is not in the parking state, the vehicle is controlled to issue a prompt to enter the electronic parking to the driver. 4. The control method for parking in the P-position of the vehicle according to claim 1, wherein the control method further comprises: When it is detected that the brake is in the pressed state, the display device controlling the vehicle displays the information that the P block is being locked until it is detected that the brake is not in the pressed state. 5 . The method for controlling the vehicle to park in gear P according to claim 1 , wherein, when it is detected that the brake is not in a depressed state, the vehicle is controlled to execute the gear P according to the P gear locking instruction. 6 . The locking action steps include: When it is detected that the brake is not in the pressed state, detect whether the automatic parking system is in the hydraulic braking state; When it is detected that the automatic parking system is in the hydraulic braking state, the display device controlling the vehicle displays the information that the P gear is being locked until it is detected that the automatic parking system is not in the hydraulic braking state; When it is detected that the automatic parking system is not in a hydraulic braking state, the vehicle is controlled to perform a P-block locking action according to the P-block locking instruction. 6. The control method for parking the vehicle in the P block of claim 1, wherein the control method further comprises: After receiving the unlocking command of the P block lock, detect the working state of the electronic parking brake system; When it is detected that the electronic parking brake system starts to enter the release state or the electronic parking brake system is detected to be in the parking state, detecting whether the gradient of the road on which the vehicle is currently located is greater than a preset gradient threshold; When detecting that the gradient is greater than a preset gradient threshold, detecting whether the brake is in a depressed state; When it is detected that the brake is in a depressed state, the vehicle is controlled to execute the P-block unlocking action according to the P-block unlocking instruction. 7. A control device for parking in the P block of a vehicle, characterized in that it comprises: a first detection module, configured to detect whether the current speed of the vehicle is less than a preset speed threshold and whether the gradient of the road on which the vehicle is currently located is greater than a preset gradient threshold after receiving the P gear locking instruction; a second detection module, configured to detect whether the electronic parking brake system of the vehicle is in a parking state when it is detected that the current speed is less than a preset speed threshold and the gradient is greater than a preset gradient threshold; a third detection module, configured to detect whether the brake is in a depressed state when it is detected that the electronic parking brake system is in a parking state; The first execution module is configured to control the vehicle to execute the P-block locking action according to the P-block locking instruction when it is detected that the brake is not in the depressed state. 8. A controller for parking a vehicle in P-position, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor executing the The computer program realizes the control method for parking in the P position of the vehicle according to any one of claims 1 to 6. 9. A control system for vehicle P-block parking, comprising: a controller, an electronic parking brake system, a P-block switch, a P-block lock device and a braking system; wherein, The electronic parking brake system is connected to the controller and used to send the detected parking state information to the controller; the P-block switch, which is connected to the controller and used to issue a P-block locking instruction to the controller when it is closed or disconnected; the P block locking device, which is connected to the controller and used to perform the P block locking action and the P block unlocking action under the control of the controller; the braking system, which is connected to the controller and used to send the detected braking state information to the controller; The controller, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor executing the computer program to implement any one of claims 1 to 6 A control method for the P-position parking of the vehicle described in one item. 10 . A vehicle, characterized in that it comprises the control system for parking in the P-position of the vehicle as claimed in claim 9 . 11 .

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