Parking control method, system, device and storage medium

Abstract

The present invention discloses a parking control method, system, device and storage medium. The method includes: obtaining a potential signal of a vehicle and determining a signal duration corresponding to the potential signal; judging whether the signal duration is greater than or equal to a preset duration; when the signal duration is greater than or equal to the preset duration, determining a parking electronic switch state according to the potential signal, and the parking electronic switch state includes a natural state, a pulled-up state, a released state, a towing state, a power-off state and a switch failure state; and performing parking control on the vehicle based on the parking electronic switch state. Compared with the prior art in which the parking electronic switch state of the vehicle is not detected and the parking control corresponding to the parking electronic switch state is not involved, the present invention accurately determines the parking electronic switch state through the potential signal, and then performs parking control on the vehicle according to the parking electronic switch state, so as to realize parking control in different parking electronic switch states, thereby ensuring the safety of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of parking, and particularly to a parking control method, system, device and storage medium. Background Art

[0002] With the rapid development of the automotive industry and the rapid increase in the ownership of personal cars, parking technology has become increasingly important. In the prior art, the commonly used Electronic Parking Brake (EPB) does not accurately detect the state of the parking electronic switch, and thus does not involve parking control of the vehicle based on different states of the parking electronic switch. Therefore, how to accurately identify different states of the parking electronic switch and at the same time achieve parking control corresponding to different states of the parking electronic switch has become an urgent problem to be solved.

[0003] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main object of the present invention is to provide a parking control method, system, device and storage medium, aiming to solve the technical problem of how to accurately identify different states of the parking electronic switch and at the same time achieve parking control corresponding to different states of the parking electronic switch.

[0005] To achieve the above object, the present invention provides a parking control method, which includes:

[0006] Obtain the potential signal of the vehicle and determine the signal duration corresponding to the potential signal;

[0007] Judge whether the signal duration is greater than or equal to a preset duration;

[0008] When the signal duration is greater than or equal to the preset duration, determine the state of the parking electronic switch according to the potential signal, and the state of the parking electronic switch includes a natural state, a pulled-up state, a released state, a towing state, a power-off state and a switch failure state;

[0009] Perform parking control on the vehicle based on the state of the parking electronic switch.

[0010] Optionally, the step of performing parking control on the vehicle based on the state of the parking electronic switch includes:

[0011] When the state of the parking electronic switch is the natural state, perform non-responsive parking control on the vehicle.

[0012] Optionally, the step of performing parking control on the vehicle based on the state of the parking electronic switch further includes:

[0013] When the parking electronic switch is in the pulled-up state, obtain the parking request signal of the vehicle;

[0014] Judge whether the parking request signal meets the preset parking conditions;

[0015] When the parking request signal meets the preset parking conditions, perform caliper clamping control on the vehicle and complete the parking request function.

[0016] Optionally, the step of performing parking control on the vehicle based on the state of the parking electronic switch further includes:

[0017] When the parking electronic switch is in the released state, obtain the parking release signal of the vehicle;

[0018] Judge whether the parking release signal meets the preset parking release conditions;

[0019] When the parking release signal meets the preset parking release conditions, perform caliper release control on the vehicle and complete the parking release function.

[0020] Optionally, the step of performing parking control on the vehicle based on the state of the parking electronic switch further includes:

[0021] When the parking electronic switch is in the towing state, obtain the towing signal of the vehicle;

[0022] Judge whether the towing signal meets the preset towing conditions;

[0023] When the towing signal meets the preset towing conditions, obtain the towing signal status value;

[0024] Perform caliper release control on the vehicle according to the towing signal status value and complete the parking release function.

[0025] Optionally, the step of performing parking control on the vehicle based on the state of the parking electronic switch further includes:

[0026] When the parking electronic switch is in the power-off state, obtain the power-off signal of the vehicle;

[0027] Judge whether the power-off signal meets the preset power-off conditions;

[0028] When the power-off signal meets the preset power-off conditions, determine the initial parking electronic switch state of the vehicle within a preset time range;

[0029] Judge whether the initial parking electronic switch state is consistent with the towing state;

[0030] If they are consistent, perform caliper release control on the vehicle, complete the parking release function, and control the vehicle to enter the sleep mode;

[0031] If they are inconsistent, perform caliper clamping control on the vehicle, complete the parking brake function, and control the vehicle to enter the sleep mode.

[0032] Optionally, the step of performing parking control on the vehicle based on the state of the parking electronic switch further includes:

[0033] When the state of the parking electronic switch is the switch failure state, report the parking electronic switch failure through the CAN signal and have no response to the parking electronic switch signal request within the power-on cycle of the vehicle.

[0034] In addition, to achieve the above object, the present invention further provides a parking control system, and the parking control system includes:

[0035] A determination module, configured to obtain the potential signal of the vehicle and determine the signal duration corresponding to the potential signal;

[0036] A judgment module, configured to judge whether the signal duration is greater than or equal to a preset duration;

[0037] The determination module is further configured to, when the signal duration is greater than or equal to the preset duration, determine the state of the parking electronic switch according to the potential signal, and the state of the parking electronic switch includes a natural state, a pulled-up state, a released state, a towed state, a powered-off state, and a switch failure state;

[0038] A control module, configured to perform parking control on the vehicle based on the state of the parking electronic switch.

[0039] In addition, to achieve the above object, the present invention further provides a parking control device, and the device includes: a memory, a processor, and a parking control program stored on the memory and executable on the processor, and the parking control program is configured to implement the steps of the parking control method as described above.

[0040] In addition, to achieve the above object, the present invention further provides a storage medium, and a parking control program is stored on the storage medium, and when the parking control program is executed by a processor, the steps of the parking control method as described above are implemented.

[0041] The present invention obtains the potential signal of a vehicle. First, it determines the signal duration corresponding to the potential signal, and then judges whether the signal duration is greater than or equal to a preset duration. When the signal duration is greater than or equal to the preset duration, it determines the state of the parking electronic switch according to the potential signal. The states of the parking electronic switch include the natural state, the pulled-up state, the released state, the towing state, the power-off state, and the switch failure state. Then, it performs parking control on the vehicle based on the state of the parking electronic switch. Compared with the prior art where the state of the parking electronic switch of the vehicle is not detected and the parking control corresponding to the state of the parking electronic switch is not involved, the present invention accurately determines the state of the parking electronic switch through the potential signal, and then performs parking control on the vehicle according to the state of the parking electronic switch, so as to achieve parking control under different states of the parking electronic switch, thereby ensuring the safety of the vehicle. Description of the Drawings

[0042] Figure 1 It is a schematic structural diagram of a parking control device in the hardware operating environment related to the solution of the embodiment of the present invention;

[0043] Figure 2 It is a schematic flowchart of the first embodiment of the parking control method of the present invention;

[0044] Figure 3 It is a circuit diagram of the natural state in the first embodiment of the parking control method of the present invention;

[0045] Figure 4 It is a circuit diagram of the pulled-up state in the first embodiment of the parking control method of the present invention;

[0046] Figure 5 It is a circuit diagram of the released state in the first embodiment of the parking control method of the present invention;

[0047] Figure 6 It is a circuit diagram of the towing state in the first embodiment of the parking control method of the present invention;

[0048] Figure 7 It is a circuit diagram of the power-off state in the first embodiment of the parking control method of the present invention;

[0049] Figure 8 It is a schematic flowchart of the second embodiment of the parking control method of the present invention;

[0050] Figure 9 It is a schematic block diagram of the first embodiment of the parking control system of the present invention.

[0051] The realization, functional characteristics, and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. Detailed Embodiments

[0052] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] Refer to Figure 1 , Figure 1 which is a schematic structural diagram of a parking control device for the hardware operating environment involved in the solution of the embodiment of the present invention.

[0054] As Figure 1 shown, the parking control device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Key board). Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed Random Access Memory (RAM) or a stable Non-Volatile Memory (NVM), such as a disk memory. Optionally, the memory 1005 may also be a storage system independent of the aforementioned processor 1001.

[0055] Those skilled in the art can understand that Figure 1 the structure shown in

[0056] does not constitute a limitation on the parking control device, and may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. Figure 1 As

[0057] shown, the memory 1005, as a storage medium, may include an operating system, a network communication module, a user interface module, and a parking control program. Figure 1 In the parking control device shown in

[0058] the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the parking control device of the present invention may be arranged in the parking control device. The parking control device calls the parking control program stored in the memory 1005 through the processor 1001 and executes the parking control method provided by the embodiment of the present invention. Figure 2 , Figure 2 which is a schematic flowchart of the first embodiment of the parking control method of the present invention.

[0059] In this embodiment, the parking control method includes the following steps:

[0060] Step S10: Obtain the potential signal of the vehicle and determine the signal duration corresponding to the potential signal.

[0061] It is easy to understand that the execution subject of this embodiment can be a parking control device with functions such as data processing, network communication, and program operation, or other computer devices with similar functions. This embodiment does not impose any restrictions.

[0062] It should be noted that the electronic switch is an integrated circuit, which is composed of the combination of 4 switches and corresponding diodes and resistors, etc. There are 5 electronic pins provided in the circuit, which can be named A, B, C, D, and E respectively. When the electronic pin is at a high potential, the truth value corresponding to the high potential signal is 1, and when the electronic pin is at a low potential, the truth value corresponding to the low potential signal is 0.

[0063] When the parking electronic switch is applied to the parking electronic system, when the parking electronic switch is in different states, by changing the electrical connection mode of the parking electronic switch state circuit, the electronic control unit with parking electronic functions in the parking electronic system can accurately identify the state of the parking electronic switch. The parking electronic switch can be compatible with the redundant parking electronic system, making up for the defects in the design of the redundant parking electronic system in the parking electronic switch.

[0064] It should also be understood that the vehicle point potential signal is the potential signal corresponding to the electronic pins of the parking electronic switch A, B, C, D, and E. The EPB controller is connected to the electronic pins of the parking electronic switch A, B, C, D, and E through the I / O port. The driver's intention is judged by identifying the potential signals of A, B, C, D, and E.

[0065] Step S20: Judge whether the signal duration is greater than or equal to a preset duration.

[0066] The preset duration can be user-defined, which can be 2s, or 3s, etc. This embodiment does not impose any restrictions.

[0067] Step S30: When the signal duration is greater than or equal to the preset duration, determine the state of the parking electronic switch according to the potential signal. The state of the parking electronic switch includes the natural state, the pulled-up state, the released state, the towing state, the power-off state, and the switch failure state.

[0068] It should also be noted that when the signal duration is less than the preset duration, the EPB controller does not make any response.

[0069] In this embodiment, it can be understood that the states of the parking electronic switch include the natural state, the pulled-up state, the released state, the towing state, the power-off state, and the switch failure state.

[0070] In specific implementation, the natural state means that the EPB switch is in the middle natural state, and the driver has neither pulled up nor pressed the EPB switch. Refer to Figure 3 the potential signal table corresponding to the natural state, Figure 3 which is the circuit diagram of the natural state in the first embodiment of the parking control method of the present invention. The following is the potential signal table corresponding to the natural state:

[0071] Switch state S1 S2 S3 S4 On Closed On Closed Contact A B C D E True value 1 1 1 1 1

[0072] As can be seen from the above table, the potential signals corresponding to the natural state are A1, B1, C1, D1, and E1.

[0073] The pulled-up state means that the driver wants to trigger the activation of the parking brake. Refer to Figure 4 the potential signal table corresponding to the pulled-up state, Figure 4 which is the circuit diagram of the pulled-up state in the first embodiment of the parking control method of the present invention. The following is the potential signal table corresponding to the pulled-up state:

[0074] Switch state S1 S2 S3 S4 Closed Closed On On Contact A B C D E True value 1 1 1 0 1

[0075] As can be seen from the above table, the potential signals corresponding to the pulled-up state are A1, B1, C1, D0, and E1.

[0076] The released state is the state where the first step of the switch is pressed, which means that the driver wants to release the parking brake. Refer to Figure 5 the potential signal table corresponding to the released state, Figure 5 which is the circuit diagram of the released state in the first embodiment of the parking control method of the present invention. The following is the potential signal table corresponding to the released state:

[0077] Switch state S1 S2 S3 S4 On On Closed Closed Contact A B C D E True value 1 0 1 1 1

[0078] As can be seen from the above table, the potential signals corresponding to the released state are A1, B0, C1, D1, and E1.

[0079] The towing state is the state where the second step of the switch is pressed, which means that the driver needs to activate the towing mode. Refer to Figure 6 the potential signal table corresponding to the towing state, Figure 6 which is the circuit diagram of the towing state in the first embodiment of the parking control method of the present invention. The following is the potential signal table corresponding to the towing state:

[0080] Switch state S1 S2 S3 S4 On Closed On Closed Contact A B C D E True value 0 0 1 1 1

[0081] As can be seen from the above table, the potential signals corresponding to the trailer state are A0, B0, C1, D1, and E1.

[0082] The power-off state indicates that the vehicle has been powered off and the voltage of VCC is zero. Refer to Figure 7 the potential signal table corresponding to the power-off state, Figure 7 which is the power-off state circuit diagram of the first embodiment of the parking control method of the present invention. The following is the potential signal table corresponding to the power-off state:

[0083] Switch state S1 S2 S3 S4 On Closed Closed On Contact A B C D E True value 0 0 0 0 0

[0084] As can be seen from the above table, the potential signals corresponding to the power-off state are A0, B0, C0, D0, and E0.

[0085] It should also be noted that for the electronic switch fault state: when the electronic pins A, B, C, D, and E show situations other than A1, B1, C1, D1, E1 or A1, B1, C1, D0, E1 or A1, B0, C1, D1, E1 or A0, B0, C1, D1, E1 or A0, B0, C0, D0, E0, it indicates that there is a fault in the parking electronic switch and the parking electronic switch needs to be repaired.

[0086] Step S40: Perform parking control on the vehicle based on the state of the parking electronic switch.

[0087] In the prior art, when the vehicle is in transportation or consignment, only the following methods can be adopted: First, all 4 wheels must be fixed on the trailer. It is not possible to adopt the method of fixing the front of the vehicle and the front wheels on the trailer and allowing the rear wheels to roll along the ground. The main reason is that after the vehicle is powered off, the parking brake will be automatically activated, locking the brake calipers on the rear wheels, thus making it impossible to transport the vehicle; Second, currently, the production workshops of automobile manufacturers adopt an automatic production line method. Taking the general assembly production workshop of a certain automobile manufacturer as an example, the method of transporting vehicles on the production line is to use an automatic chain to transport the front left and rear wheels of the vehicle, and the front right and rear wheels roll along the ground. During transportation, some workstations require the vehicle to be powered off (especially when passing through the water spray room). However, after the vehicle is powered off, the vehicle will automatically activate the parking brake, locking the brake calipers on the rear wheels, thus making it impossible to transport the vehicle in the production workshop; Third, currently, in some automatic car washes, the method of transporting vehicles is to use an automatic chain to transport the front wheels of the vehicle, and the rear wheels roll along the ground. When the vehicle is being washed, it needs to be powered off to ensure vehicle safety. However, after the vehicle is powered off, the vehicle will automatically activate the parking brake, locking the brake calipers on the rear wheels, thus making it impossible to transport the vehicle in the car wash.

[0088] In this embodiment, the states of the parking electronic switch include the natural state, the pulled-up state, the released state, the towing state, the power-off state, and the switch failure state. Among them, the towing state can ensure better execution during vehicle towing, car wash link transmission, and transportation in the automobile production workshop. Otherwise, the types of tow trucks during vehicle transportation are restricted, the choice of car wash houses is restricted, and high costs need to be invested in the transformation of the automobile production workshop.

[0089] Further, the processing method for parking control of the vehicle based on the state of the parking electronic switch is to perform non-responsive parking control on the vehicle when the state of the parking electronic switch is the natural state.

[0090] In this embodiment, when the EPB controller recognizes that the state of the parking electronic switch is the natural state, the EPB controller does not make any response to the vehicle.

[0091] Further, the processing method for parking control of the vehicle based on the state of the parking electronic switch can also be to obtain the parking request signal of the vehicle when the state of the parking electronic switch is the pulled-up state, judge whether the parking request signal meets the preset parking conditions, and when the parking request signal meets the preset parking conditions, perform caliper clamping control on the vehicle and complete the parking request function.

[0092] In this embodiment, the EPB controller obtains the potential signals A1, B1, C1, D0, E1, and the maintenance duration of the potential signals A1, B1, C1, D0, E1 is greater than the preset duration. The EPB controller recognizes that the state of the parking electronic switch is the pulled-up state, and then obtains the parking request signal of the vehicle. The parking request signal can be the vehicle speed signal and the seat belt signal, etc. The preset parking condition is to detect the vehicle speed signal and the seat belt signal, where the current vehicle speed is less than the preset vehicle speed and the seat belt is in the connected state. When the parking request signal meets the preset parking conditions, the EPB controller performs parking, controls the rear caliper to complete the clamping action, and completes the vehicle parking function; when the parking request signal does not meet the preset parking conditions, the EPB controller does not make any response.

[0093] Further, the processing method for parking control of the vehicle based on the state of the parking electronic switch can also be to obtain the parking release signal of the vehicle when the state of the parking electronic switch is the released state, judge whether the parking release signal meets the preset parking release conditions, and when the parking release signal meets the preset parking release conditions, perform caliper release control on the vehicle and complete the parking release function.

[0094] In this embodiment, the EPB controller obtains potential signals A1, B0, C1, D1, and E1, and the duration for which the potential signals A1, B0, C1, D1, and E1 are maintained is greater than a preset duration. The EPB controller identifies the state of the parking electronic switch as the release state, and then obtains the parking release signal of the vehicle. The parking release signal can be a vehicle speed signal, a brake pedal signal, a seat belt signal, etc. The preset parking release condition is to detect the vehicle speed signal, the brake pedal signal, and the seat belt signal, where the current vehicle speed is less than the preset vehicle speed, the user steps on the brake pedal, and the seat belt is in the connected state. When the parking release request signal meets the preset parking release condition, the EPB controller performs parking release, controls the rear caliper to complete the release action, and completes the parking release of the entire vehicle; when the parking release request signal does not meet the preset parking release condition, the EPB controller does not make any response.

[0095] Further, the processing method for performing parking control on the vehicle based on the state of the parking electronic switch can also be that when the state of the parking electronic switch is the towing state, the towing signal of the vehicle is obtained, and it is determined whether the towing signal meets the preset towing condition. When the towing signal meets the preset towing condition, the towing signal status value is obtained, and the caliper release control of the vehicle is performed according to the towing signal status value to complete the parking release function.

[0096] In a specific implementation, the EPB controller obtains potential signals A0, B0, C1, D1, and E1, and the duration for which the potential signals A0, B0, C1, D1, and E1 are maintained is greater than a preset duration. The EPB controller identifies the state of the parking electronic switch as the towing state, and then obtains the towing signal of the vehicle. The towing signal can be a vehicle speed signal, a brake pedal signal, a seat belt signal, etc. The preset towing condition is to detect the vehicle speed signal, the brake pedal signal, and the seat belt signal, where the current vehicle speed is less than the preset vehicle speed, the user steps on the brake pedal, and the seat belt is in the connected state. When the towing signal meets the preset towing condition, the EPB controller performs parking release, controls the rear caliper to complete the release action, and completes the parking release of the entire vehicle. At the same time, the towing signal status value EPB-tow-on is sent to the ROM module of the EPB controller; when the towing signal does not meet the preset towing condition, the EPB controller does not make any response.

[0097] Further, the processing method for performing parking control on the vehicle based on the parking electronic switch status may also be as follows: when the parking electronic switch status is the power-off state, obtain the power-off signal of the vehicle, determine whether the power-off signal meets the preset power-off condition, when the power-off signal meets the preset power-off condition, determine the initial parking electronic switch status within the preset time range of the vehicle, determine whether the initial parking electronic switch status is consistent with the trailer state, if consistent, perform caliper release control on the vehicle, complete the parking release function, and control the vehicle to enter the sleep mode, if inconsistent, perform caliper clamping control on the vehicle, complete the parking braking function, and control the vehicle to enter the sleep mode.

[0098] In this embodiment, the EPB controller obtains the potential signals as A0, B0, C0, D0, E0, and the maintenance duration of the potential signals A0, B0, C0, D0, E0 is greater than the preset duration. The EPB controller identifies that the parking electronic switch status is the power-off state, and then obtains the power-off signal of the vehicle. The power-off signal may be a vehicle speed signal, etc. The preset power-off condition is to detect the vehicle speed signal, where the current vehicle speed is less than the preset vehicle speed. When the power-off signal meets the preset power-off condition, the EPB controller detects the initial parking electronic switch status within Tms before the parking electronic switch, determines whether the initial parking electronic switch status is consistent with the trailer state. If consistent, the EPB controller ensures that the rear brake caliper is in the released state and the whole vehicle is in the parking release state, and then the EPB controller enters the sleep mode after Xms; if inconsistent, the EPB controller controls the rear caliper to complete the clamping action, the whole vehicle is in the parking braking state, and then the EPB controller enters the sleep mode after Xms.

[0099] Further, the processing method for performing parking control on the vehicle based on the parking electronic switch status may also be as follows: when the parking electronic switch status is the switch failure state, report the parking electronic switch failure through the CAN signal and have no response to the parking electronic switch signal request within the vehicle power-on cycle.

[0100] In specific implementation, when the parking electronic switch status is the switch failure state, the EPB controller reports the parking electronic switch failure through the CAN signal to remind the driver to repair the electronic switch and has no response to the parking electronic switch signal request within the vehicle power-on cycle.

[0101] In this embodiment, the potential signal of the vehicle is obtained. First, the signal duration corresponding to the potential signal is determined, and then it is judged whether the signal duration is greater than or equal to a preset duration. When the signal duration is greater than or equal to the preset duration, the parking electronic switch state is determined according to the potential signal. The parking electronic switch state includes the natural state, the pulled-up state, the released state, the towing state, the power-off state, and the switch failure state. Then, parking control of the vehicle is performed based on the parking electronic switch state. Compared with the prior art where the parking electronic switch state of the vehicle is not detected and the parking control corresponding to the parking electronic switch state is not involved, in this embodiment, the parking electronic switch state is accurately determined through the potential signal, and then parking control of the vehicle is performed according to the parking electronic switch state, so as to achieve parking control under different parking electronic switch states, thereby ensuring the safety of the vehicle.

[0102] Reference Figure 8 , Figure 8 is a schematic flowchart of the second embodiment of the parking control method of the present invention.

[0103] Based on the above first embodiment, in this embodiment, step S40 further includes:

[0104] Step S401: When the parking electronic switch state is the towing state, obtain the towing signal of the vehicle.

[0105] The towing state is the state where the second step of the switch is pressed, indicating that the driver needs to turn on the towing mode. Reference Figure 6 and the potential signal table corresponding to the towing state, Figure 6 is the circuit diagram of the towing state in the first embodiment of the parking control method of the present invention. The following is the potential signal table corresponding to the towing state:

[0106] Switch state S1 S2 S3 S4 On Closed On Closed Contact A B C D E True value 0 0 1 1 1

[0107] As can be seen from the above table, the potential signals corresponding to the towing state are A0, B0, C1, D1, and E1.

[0108] It should also be noted that the towing signal can be a vehicle speed signal, a brake pedal signal, a seat belt signal, etc.

[0109] Step S402: Judge whether the towing signal meets the preset towing conditions.

[0110] The preset towing conditions are to detect the vehicle speed signal, the brake pedal signal, and the seat belt signal, where the current vehicle speed is less than the preset vehicle speed, the user steps on the brake pedal, and the seat belt is in the connected state.

[0111] Step S403: When the towing signal meets the preset towing conditions, obtain the state value of the towing signal.

[0112] It should be understood that the trailer signal status value is EPB - tow - on.

[0113] Step S404: Perform caliper release control on the vehicle according to the trailer signal status value to complete the parking release function.

[0114] In a specific implementation, the EPB controller obtains potential signals A0, B0, C1, D1, and E1, and the duration of the potential signals A0, B0, C1, D1, and E1 is greater than a preset duration. The EPB controller identifies that the status of the parking electronic switch is the trailer state, and then obtains the trailer signal of the vehicle. The trailer signal can be a vehicle speed signal, a brake pedal signal, a seat belt signal, etc. The preset trailer condition is to detect the vehicle speed signal, the brake pedal signal, and the seat belt signal, where the current vehicle speed is less than the preset vehicle speed, the user steps on the brake pedal, and the seat belt is in a connected state. When the trailer signal meets the preset trailer condition, the EPB controller performs parking release, controls the rear caliper to complete the release action, completes the vehicle's parking release, and at the same time sends the trailer signal status value EPB - tow - on to the ROM module of the EPB controller; when the trailer signal does not meet the preset trailer condition, the EPB controller does not make any response.

[0115] In this embodiment, when the status of the parking electronic switch is the trailer state, obtain the trailer signal of the vehicle, determine whether the trailer signal meets the preset trailer condition. When the trailer signal meets the preset trailer condition, obtain the trailer signal status value, and perform caliper release control on the vehicle according to the trailer signal status value to complete the parking release function. Compared with the prior art where the process of towing is not involved, in this embodiment, through the towing mode, it is ensured that the vehicle performs well during the towing and car wash link transmission and the transportation process in the automobile production workshop. Then, when the trailer signal meets the preset trailer condition, obtain the trailer signal status value, and perform caliper release control on the vehicle according to the trailer signal status value to complete the parking release function, thereby ensuring the safety of the vehicle.

[0116] Refer to Figure 9 , Figure 9 which is the structural block diagram of the first embodiment of the parking control system of the present invention.

[0117] As Figure 9 shown, the parking control system proposed in the embodiment of the present invention includes:

[0118] A determination module 9001, configured to obtain the potential signal of the vehicle and determine the signal duration corresponding to the potential signal.

[0119] It should be noted that the electronic switch is an integrated circuit, which is composed of the combination of 4 switches and corresponding diodes, resistors, etc. There are 5 electronic pins provided in the circuit, which can be named A, B, C, D, and E respectively. When the electronic pin is at a high potential, the truth value corresponding to the high potential signal is 1, and when the electronic pin is at a low potential, the truth value corresponding to the low potential signal is 0.

[0120] When the parking electronic switch is applied to the parking electronic system, when the parking electronic switch is in different states, by changing the electrical connection mode of the parking electronic switch state circuit, the electronic control unit with parking electronic function in the parking electronic system can accurately identify the state of the parking electronic switch. The parking electronic switch can be compatible with the redundant parking electronic system, making up for the defect in the design of the redundant parking electronic system for the parking electronic switch.

[0121] It should also be understood that the vehicle point potential signal is the potential signal corresponding to the electronic pins of the parking electronic switch A, B, C, D, and E. The EPB controller is connected to the electronic pins of the parking electronic switch A, B, C, D, and E through the I / O port. By identifying the potential signals of A, B, C, D, and E, the intention of the driver can be judged.

[0122] The judgment module 9002 is used to judge whether the signal duration is greater than or equal to the preset duration.

[0123] The preset duration can be user-defined, which can be 2s, or 3s, etc. This embodiment does not impose any restrictions.

[0124] The determination module 9001 is further used to determine the state of the parking electronic switch according to the potential signal when the signal duration is greater than or equal to the preset duration. The state of the parking electronic switch includes the natural state, the pulled-up state, the released state, the towing state, the power-off state, and the switch failure state.

[0125] It should also be noted that when the signal duration is less than the preset duration, the EPB controller does not make any response.

[0126] In this embodiment, it can be understood that the state of the parking electronic switch includes the natural state, the pulled-up state, the released state, the towing state, the power-off state, and the switch failure state.

[0127] In specific implementation, the natural state represents that the EPB switch is in the middle natural state, and the driver has neither pulled up nor pressed the EPB switch. Refer to Figure 3 the potential signal table corresponding to the natural state, Figure 3 which is the circuit diagram of the natural state in the first embodiment of the parking control method of the present invention. The following is the potential signal table corresponding to the natural state:

[0128] Switch state S1 S2 S3 S4 On Closed On Closed Contact A B C D E True value 1 1 1 1 1

[0129] As can be seen from the above table, the potential signals corresponding to the natural state are A1, B1, C1, D1, and E1.

[0130] The pulled-up state represents that the driver wants to trigger the activation of the parking brake. Refer to Figure 4 the table of potential signals corresponding to the pulled-up state, Figure 4 which is the circuit diagram of the pulled-up state in the first embodiment of the parking control method of the present invention. The following is the table of potential signals corresponding to the pulled-up state:

[0131] Switch state S1 S2 S3 S4 Closed Closed On On Contact A B C D E True value 1 1 1 0 1

[0132] As can be seen from the above table, the potential signals corresponding to the pulled-up state are A1, B1, C1, D0, and E1.

[0133] The released state is the state where the first step of the switch is pressed, representing that the driver wants to release the parking brake. Refer to Figure 5 the table of potential signals corresponding to the released state, Figure 5 which is the circuit diagram of the released state in the first embodiment of the parking control method of the present invention. The following is the table of potential signals corresponding to the released state:

[0134] Switch state S1 S2 S3 S4 On On Closed Closed Contact A B C D E True value 1 0 1 1 1

[0135] As can be seen from the above table, the potential signals corresponding to the released state are A1, B0, C1, D1, and E1.

[0136] The towing state is the state where the second step of the switch is pressed, representing that the driver needs to activate the towing mode. Refer to Figure 6 the table of potential signals corresponding to the towing state, Figure 6 which is the circuit diagram of the towing state in the first embodiment of the parking control method of the present invention. The following is the table of potential signals corresponding to the towing state:

[0137] Switch state S1 S2 S3 S4 On Closed On Closed Contact A B C D E True value 0 0 1 1 1

[0138] As can be seen from the above table, the potential signals corresponding to the towing state are A0, B0, C1, D1, and E1.

[0139] The powered-off state represents that the vehicle has been powered off and the voltage of VCC is zero. Refer to Figure 7 the table of potential signals corresponding to the powered-off state, Figure 7 which is the circuit diagram of the powered-off state in the first embodiment of the parking control method of the present invention. The following is the table of potential signals corresponding to the powered-off state:

[0140] Switch state S1 S2 S3 S4 On Closed Closed On Contact A B C D E True value 0 0 0 0 0

[0141] As can be seen from the above table, the potential signals corresponding to the powered-off state are A0, B0, C0, D0, and E0.

[0142] It should also be noted that for the failure state of the electronic switch: when the electronic pins A, B, C, D, and E are in a situation other than A1, B1, C1, D1, E1 or A1, B1, C1, D0, E1 or A1, B0, C1, D1, E1 or A0, B0, C1, D1, E1 or A0, B0, C0, D0, E0, it indicates that there is a failure in the parking electronic switch, and the parking electronic switch needs to be repaired.

[0143] The control module 9003 is used to perform parking control on the vehicle based on the state of the parking electronic switch.

[0144] In the prior art, vehicles can only adopt the following methods during transportation or consignment: First, all four wheels must be fixed on the trailer. It is not possible to fix the front of the vehicle and the front wheels on the trailer and let the rear wheels roll along the ground. The main reason is that after the vehicle is powered off, the parking brake will be automatically activated, locking the brake calipers on the rear wheels, thus preventing the vehicle from being transported; Second, currently, the production workshops of automobile manufacturers adopt an automatic assembly line method. Taking the general assembly production workshop of a certain automobile manufacturer as an example, the method of transporting vehicles on the assembly line is to use an automatic chain to transport the front left and rear wheels of the vehicle, and the front right and rear wheels roll on the ground. During transportation, some workstations require the vehicle to be powered off (especially when passing through the water spraying room). However, after the vehicle is powered off, the vehicle will automatically activate the parking brake, locking the brake calipers on the rear wheels, thus preventing the vehicle from being transported in the production workshop; Third, currently, in some automatic car washes, the method of transporting vehicles is to use an automatic chain to transport the front wheels of the vehicle, and the rear wheels roll on the ground. When the vehicle is being washed, it needs to be powered off to ensure vehicle safety. However, after the vehicle is powered off, the vehicle will automatically activate the parking brake, locking the brake calipers on the rear wheels, thus preventing the vehicle from being transported in the car wash.

[0145] In this embodiment, the states of the parking electronic switch include the natural state, the pulled-up state, the released state, the towing state, the powered-off state, and the switch failure state. Among them, through the towing state, it can ensure better execution during the towing, car wash link transmission, and transportation in the automobile production workshop of the vehicle. Otherwise, the types of trailers during vehicle transportation will be restricted and the choice of car washes will be restricted, and the automobile production workshop will need to invest a high cost for transformation.

[0146] Furthermore, the processing method of performing parking control on the vehicle based on the state of the parking electronic switch is to perform non-responsive parking control on the vehicle when the state of the parking electronic switch is the natural state.

[0147] In this embodiment, when the EPB controller recognizes that the state of the parking electronic switch is the natural state, the EPB controller does not make any response to the vehicle.

[0148] Further, the processing method for performing parking control on the vehicle based on the state of the parking electronic switch can also be that when the state of the parking electronic switch is in the pulled-up state, obtain the parking request signal of the vehicle, determine whether the parking request signal meets the preset parking conditions, and when the parking request signal meets the preset parking conditions, perform caliper clamping control on the vehicle and complete the parking request function.

[0149] In this embodiment, the EPB controller obtains that the potential signals are A1, B1, C1, D0, and E1, and the maintenance duration of the potential signals A1, B1, C1, D0, and E1 is greater than the preset duration. The EPB controller identifies that the state of the parking electronic switch is in the pulled-up state, and then obtains the parking request signal of the vehicle. The parking request signal can be a vehicle speed signal, a seat belt signal, etc. The preset parking condition is to detect the vehicle speed signal and the seat belt signal, where the current vehicle speed is less than the preset vehicle speed and the seat belt is in the connected state. When the parking request signal meets the preset parking conditions, the EPB controller performs parking, controls the rear caliper to complete the clamping action, and completes the vehicle parking function; when the parking request signal does not meet the preset parking conditions, the EPB controller does not make any response.

[0150] Further, the processing method for performing parking control on the vehicle based on the state of the parking electronic switch can also be that when the state of the parking electronic switch is in the released state, obtain the parking release signal of the vehicle, determine whether the parking release signal meets the preset parking release conditions, and when the parking release signal meets the preset parking release conditions, perform caliper release control on the vehicle and complete the parking release function.

[0151] In this embodiment, the EPB controller obtains that the potential signals are A1, B0, C1, D1, and E1, and the maintenance duration of the potential signals A1, B0, C1, D1, and E1 is greater than the preset duration. The EPB controller identifies that the state of the parking electronic switch is in the released state, and then obtains the parking release signal of the vehicle. The parking release signal can be a vehicle speed signal, a brake pedal signal, a seat belt signal, etc. The preset parking release condition is to detect the vehicle speed signal, the brake pedal signal, and the seat belt signal, where the current vehicle speed is less than the preset vehicle speed, the user steps on the brake pedal, and the seat belt is in the connected state. When the parking release request signal meets the preset parking release conditions, the EPB controller performs parking release, controls the rear caliper to complete the release action, and completes the vehicle parking release; when the parking release request signal does not meet the preset parking release conditions, the EPB controller does not make any response.

[0152] Further, the processing method for performing parking control on a vehicle based on the status of the parking electronic switch can also be that when the status of the parking electronic switch is the towing state, the towing signal of the vehicle is obtained, and it is determined whether the towing signal meets the preset towing conditions. When the towing signal meets the preset towing conditions, the status value of the towing signal is obtained, and the caliper release control is performed on the vehicle according to the status value of the towing signal to complete the parking release function.

[0153] In a specific implementation, the EPB controller obtains the potential signals as A0, B0, C1, D1, and E1, and the duration of the potential signals A0, B0, C1, D1, and E1 is greater than the preset duration. The EPB controller identifies that the status of the parking electronic switch is the towing state, and then obtains the towing signal of the vehicle. The towing signal can be a vehicle speed signal, a brake pedal signal, a seat belt signal, etc. The preset towing conditions are to detect the vehicle speed signal, the brake pedal signal, and the seat belt signal, where the current vehicle speed is less than the preset vehicle speed, the user steps on the brake pedal, and the seat belt is in the connected state. When the towing signal meets the preset towing conditions, the EPB controller performs parking release, controls the rear caliper to complete the release action, completes the vehicle parking release, and at the same time sends the towing signal status value EPB-tow-on to the ROM module of the EPB controller; when the towing signal does not meet the preset towing conditions, the EPB controller does not make any response.

[0154] Further, the processing method for performing parking control on a vehicle based on the status of the parking electronic switch can also be that when the status of the parking electronic switch is the power-off state, the power-off signal of the vehicle is obtained, and it is determined whether the power-off signal meets the preset power-off conditions. When the power-off signal meets the preset power-off conditions, the initial status of the parking electronic switch within the preset time range of the vehicle is determined, and it is determined whether the initial status of the parking electronic switch is consistent with the towing state. If they are consistent, the caliper release control is performed on the vehicle to complete the parking release function, and the vehicle is controlled to enter the sleep mode. If they are not consistent, the caliper clamping control is performed on the vehicle to complete the parking brake function, and the vehicle is controlled to enter the sleep mode.

[0155] In this embodiment, the EPB controller obtains potential signals A0, B0, C0, D0, and E0, and the duration of the potential signals A0, B0, C0, D0, and E0 is greater than the preset duration. The EPB controller identifies that the parking electronic switch state is the power-off state, and then obtains the power-off signal of the vehicle. The power-off signal can be a vehicle speed signal, etc. The preset power-off condition is to detect the vehicle speed signal, where the current vehicle speed is less than the preset vehicle speed. When the power-off signal meets the preset power-off condition, the EPB controller detects the initial parking electronic switch state within Tms before the parking electronic switch, and determines whether the initial parking electronic switch state is consistent with the trailer state. If they are consistent, the EPB controller ensures that the rear brake caliper is in the released state and the whole vehicle is in the parked release state. Then, after Xms, the EPB controller enters the sleep mode. If they are not consistent, the EPB controller controls the rear caliper to complete the clamping action, the whole vehicle is in the parked braking state, and then after Xms, the EPB controller enters the sleep mode.

[0156] Further, the processing method for performing parking control on the vehicle based on the parking electronic switch state can also be that when the parking electronic switch state is the switch failure state, the parking electronic switch failure is reported through the CAN signal, and there is no response to the parking electronic switch signal request within the vehicle power-on cycle.

[0157] In specific implementation, when the parking electronic switch state is the switch failure state, the EPB controller reports the parking electronic switch failure through the CAN signal to remind the driver to repair the electronic switch, and there is no response to the parking electronic switch signal request within the vehicle power-on cycle.

[0158] In this embodiment, to obtain the potential signal of the vehicle, first determine the signal duration corresponding to the potential signal, and then determine whether the signal duration is greater than or equal to the preset duration. When the signal duration is greater than or equal to the preset duration, determine the parking electronic switch state according to the potential signal. The parking electronic switch state includes the natural state, the pulled-up state, the released state, the trailer state, the power-off state, and the switch failure state. Then, perform parking control on the vehicle based on the parking electronic switch state. Compared with the prior art where the parking electronic switch state of the vehicle is not detected and the parking control corresponding to the parking electronic switch state is not involved, in this embodiment, the parking electronic switch state is accurately determined through the potential signal, and then parking control is performed on the vehicle according to the parking electronic switch state, so as to achieve parking control in different parking electronic switch states, thereby ensuring the safety of the vehicle.

[0159] For other embodiments or specific implementation manners of the parking control system of the present invention, reference can be made to the above method embodiments, and details are not described herein again.

[0160] It should be noted that in this article, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or system. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or system including such an element.

[0161] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0162] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as a read-only memory / random access memory, magnetic disk, optical disk), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0163] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A parking control method, characterized in that, The parking control method includes the following steps: The EPB controller is connected to the electronic pins A, B, C, D, and E of the parking electronic switch through the I / O port; Obtain the potential signals corresponding to the electronic pins. When the electronic pin is at a high potential, the true value of the high-potential signal is 1. When the electronic pin is at a low potential, the true value of the low-potential signal is 0, and determine the signal duration corresponding to the potential signal; Judge whether the signal duration is greater than or equal to a preset duration; When the signal duration is greater than or equal to the preset duration, match the corresponding parking electronic switch state according to the potential signal. The parking electronic switch states include the natural state, the pulled-up state, the released state, the towing state, the power-off state, and the switch failure state. The potential signals corresponding to the natural state are A1, B1, C1, D1, and E1. The potential signals corresponding to the pulled-up state are A1, B1, C1, D0, and E1. The potential signals corresponding to the released state are A1, B0, C1, D1, and E1. The potential signals corresponding to the towing state are A0, B0, C1, D1, and E1. The potential signals corresponding to the power-off state are A0, B0, C0, D0, and E0. The switch failure state is a situation other than the above potential signals; Perform parking control on the vehicle based on the parking electronic switch state.

2. The method according to claim 1, wherein The step of performing parking control on the vehicle based on the parking electronic switch state includes: When the parking electronic switch state is the natural state, perform non-responsive parking control on the vehicle.

3. The method according to claim 1, wherein The step of performing parking control on the vehicle based on the parking electronic switch state further includes: When the parking electronic switch state is the pulled-up state, obtain the parking request signal of the vehicle; Judge whether the parking request signal meets the preset parking conditions; When the parking request signal meets the preset parking conditions, perform caliper clamping control on the vehicle and complete the parking request function.

4. The method according to claim 1, characterized in that, The step of performing parking control on the vehicle based on the parking electronic switch state further includes: When the parking electronic switch state is the released state, obtain the parking release signal of the vehicle; Judge whether the parking release signal meets the preset parking release conditions; When the parking release signal meets the preset parking release conditions, perform caliper release control on the vehicle and complete the parking release function.

5. The method according to claim 1, characterized in that, The step of performing parking control on the vehicle based on the parking electronic switch state further includes: When the parking electronic switch state is the towing state, obtain the towing signal of the vehicle; Judge whether the towing signal meets the preset towing conditions; When the towing signal meets the preset towing conditions, obtain the towing signal status value; Perform caliper release control on the vehicle according to the towing signal status value and complete the parking release function.

6. The method according to claim 1, characterized in that, The step of performing parking control on the vehicle based on the parking electronic switch state further includes: When the parking electronic switch state is the power-off state, obtain the power-off signal of the vehicle; Determine whether the power-off signal meets the preset power-off condition; When the power-off signal meets the preset power-off condition, determine the initial parking electronic switch state of the vehicle within a preset time range; Determine whether the initial parking electronic switch state is consistent with the trailer state; If they are consistent, perform caliper release control on the vehicle, complete the parking release function, and control the vehicle to enter the sleep mode; If they are inconsistent, perform caliper clamping control on the vehicle, complete the parking braking function, and control the vehicle to enter the sleep mode.

7. The method according to claim 1, characterized in that The step of performing parking control on the vehicle based on the parking electronic switch state further includes: When the parking electronic switch state is the switch failure state, report the parking electronic switch failure through the CAN signal and have no response to the parking electronic switch signal request within the vehicle power-on cycle.

8. A parking control system, characterized in that, The parking control system includes: The EPB controller is connected to the electronic pins A, B, C, D, and E of the parking electronic switch through the I / O port; A determination module, configured to obtain the potential signals corresponding to the electronic pins. When the electronic pin is at a high potential, the truth value of the high-potential signal is 1. When the electronic pin is at a low potential, the truth value of the low-potential signal is 0, and determine the signal duration corresponding to the potential signal; A judgment module, configured to judge whether the signal duration is greater than or equal to a preset duration; The determination module is further configured to, when the signal duration is greater than or equal to the preset duration, match the corresponding parking electronic switch state according to the potential signal. The parking electronic switch state includes a natural state, a pulled-up state, a released state, a trailer state, a power-off state, and a switch failure state. The potential signal corresponding to the natural state is A1, B1, C1, D1, and E1. The potential signal corresponding to the pulled-up state is A1, B1, C1, D0, and E1. The potential signal corresponding to the released state is A1, B0, C1, D1, and E1. The potential signal corresponding to the trailer state is A0, B0, C1, D1, and E1. The potential signal corresponding to the power-off state is A0, B0, C0, D0, and E0. The switch failure state is a situation other than the above potential signals; A control module, configured to perform parking control on the vehicle based on the parking electronic switch state.

9. A parking control device, characterized in that, The device includes: a memory, a processor, and a parking control program stored on the memory and executable on the processor. The parking control program is configured to implement the steps of the parking control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that, A parking control program is stored on the storage medium. When the parking control program is executed by the processor, it implements the steps of the parking control method according to any one of claims 1 to 7.

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