Control Method, Device, Redundancy Setting System and Vehicle for Collecting Braking Signals

Abstract

The embodiments of the present application are directed to providing a control method, device, redundancy setting system, and vehicle for collecting braking signals, belonging to the field of vehicle signal collection. The braking control method is applied to a vehicle, and the method includes: detecting a brake pedal through a displacement sensor in an electric power assisted braking system on the vehicle; generating a brake switch signal when it is detected that the brake pedal has undergone a displacement of a preset type; in response to the brake switch signal, controlling a brake light on the vehicle to light up, and performing a logical judgment on the brake switch signal to execute corresponding braking control logic. The present application aims to facilitate improving the driving safety of the vehicle.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of vehicle signal acquisition, and more specifically, to a control method, a device, a redundancy setting system, and a vehicle for acquiring a braking signal. Background Art

[0002] With the rapid development of the social economy and the rapid improvement of people's living standards, automobiles have become an indispensable part of people's lives.

[0003] In order to ensure the safe driving of a vehicle, components inside the vehicle need to cooperate with each other. For example, the braking system and the power system need to work in coordination. The braking switch signal is one of the important signals of the vehicle braking system. Components such as the brake lights that display the braking state of the vehicle and the controller that controls the working state of the vehicle engine need to change their working states according to the braking switch signal.

[0004] Currently, the braking switch signal of a vehicle is acquired by a braking switch installed on the brake pedal bracket. When the driver steps on the brake pedal, the voltage on / off of the braking switch can be switched. By analyzing and processing the voltage signal of the active switch, the braking switch signal can be obtained.

[0005] However, when installing the braking switch, due to structural limitations such as space and the strength of the braking switch bracket, the installation cost of the braking switch is high and the detection accuracy is low. As a result, abnormalities are likely to occur when acquiring the braking switch signal, which may cause the brake lights and other vehicle functions to fail to work in a timely manner, posing a certain safety hazard during vehicle driving. Summary of the Invention

[0006] The embodiments of the present application provide a control method, a device, a redundancy setting system, and a vehicle for acquiring a braking signal, aiming to improve the driving safety of the vehicle.

[0007] In a first aspect, the embodiments of the present application provide a control method for acquiring a braking signal, which is applied to a vehicle. The method includes:

[0008] Detecting a brake pedal through a displacement sensor in an electric power assisted braking system of the vehicle;

[0009] Generating a braking switch signal when a displacement of a preset type of the brake pedal is detected;

[0010] In response to the braking switch signal, controlling a brake light on the vehicle to light up and performing a logical judgment on the braking switch signal to execute a corresponding braking control logic.

[0011] Optionally, the step of generating a braking switch signal when a displacement of a preset type of the brake pedal is detected includes:

[0012] Compare the detected displacement value of the brake pedal with a preset displacement calibration value;

[0013] When the displacement value of the brake pedal is greater than or equal to the displacement calibration value, determine that the brake pedal has a preset type of displacement and generate a brake switch signal.

[0014] Optionally, the logical judgment of the brake switch signal to execute corresponding brake control logic includes:

[0015] Send the brake switch signal to the CAN bus of the vehicle;

[0016] The power system of the vehicle responds to the brake switch signal transmitted by the CAN bus and adjusts the working state of the vehicle engine.

[0017] Optionally, the method further includes:

[0018] Detect whether the electric power assisted braking system of the vehicle has a fault, where the fault includes a power supply shortage state and an internal fault state;

[0019] When it is detected that the electric power assisted braking system of the vehicle has a fault, if it is detected that the electric power assisted braking system of the vehicle is transmitted with a brake pedal stepping signal, call a preset redundant line;

[0020] Through the redundant line, the electric power assisted braking system directly sends the displacement signal of the brake pedal;

[0021] When it is detected that the brake pedal has a preset type of displacement, generating a brake switch signal includes:

[0022] Respond to the displacement signal of the brake pedal directly sent by the electric power assisted braking system and generate a brake switch signal.

[0023] Optionally, the electric power assisted braking system of the vehicle is further configured with a backup power supply, and the method further includes:

[0024] When it is detected that the electric power assisted braking system of the vehicle has a power supply shortage fault, start the backup power supply to provide a backup working voltage to the electric power assisted braking system.

[0025] Optionally, the method further includes:

[0026] Send fault information to the display instrument of the vehicle through the redundant line so that the display instrument of the vehicle outputs the fault information.

[0027] In a second aspect, an embodiment of the present application provides a control device for collecting brake signals, which is applied to a vehicle. The device includes:

[0028] A collection module, configured to detect a brake pedal through a displacement sensor in an electric power assisted braking system on a vehicle;

[0029] A control module, configured to generate a brake switch signal when it detects that the brake pedal has undergone a preset type of displacement;

[0030] An execution module, configured to, in response to the brake switch signal, control a brake light on the vehicle to light up, and perform a logical judgment on the brake switch signal to execute corresponding brake control logic.

[0031] In a third aspect, an embodiment of the present application provides a redundancy setting system, the system includes:

[0032] A detection module, configured to detect a brake pedal through a displacement sensor;

[0033] A switch signal generation module, configured to generate a brake switch signal when it detects that the brake pedal has undergone a preset type of displacement;

[0034] A signal sending module, configured to send the brake switch signal to an ECU of the vehicle, and control a brake light on the vehicle to light up through the ECU of the vehicle, and perform a logical judgment on the brake switch signal to execute corresponding brake control logic.

[0035] Optionally, the system further includes:

[0036] A fault detection module, configured to detect whether a fault occurs in an electric power assisted braking system of the vehicle, where the fault includes a power supply shortage state and an internal fault state;

[0037] A redundant circuit, configured to directly send a displacement signal of the brake pedal to the ECU of the vehicle when it detects that a fault occurs in the electric power assisted braking system of the vehicle, so that the ECU of the vehicle generates the brake switch signal according to the displacement signal;

[0038] A backup power supply, configured to provide a backup working voltage to the electric power assisted braking system when it detects that a power supply shortage state occurs in the electric power assisted braking system of the vehicle.

[0039] In a third aspect, an embodiment of the present application provides a vehicle, on which a control device described in the second aspect of the embodiment or a redundancy setting system described in the third aspect of the embodiment is provided, and the control device or the redundancy setting system executes the control method described in the first aspect of the embodiment.

[0040] Beneficial effects:

[0041] When a user steps on the brake pedal, a displacement sensor in the electric power assisted braking system of the vehicle detects the brake pedal. When it detects that the brake pedal has a preset type of displacement, a brake switch signal is generated. In response to the brake switch signal, the brake light on the vehicle is controlled to light up, and a logical judgment is made on the brake switch signal to execute corresponding brake control logic. By using the displacement sensor in the vehicle's electric power assisted braking system to detect the displacement of the pedal, it is not necessary to install a separate brake switch, which can reduce the installation cost to a certain extent. Moreover, the detection accuracy of the displacement sensor is higher than that of the brake switch, so that the brake switch signal can be obtained more accurately, which is convenient for improving the driving safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0043] Figure 1 is a flowchart of the steps of a control method proposed in an embodiment of the present application;

[0044] Figure 2 is a flowchart of the steps of a control method proposed in an embodiment of the present application;

[0045] Figure 3 is a flowchart of the steps of a control method proposed in an embodiment of the present application;

[0046] Figure 4 is a flowchart of the steps of a control method proposed in an embodiment of the present application;

[0047] Figure 5 is a functional module diagram of a control device proposed in another embodiment of the present application;

[0048] Figure 6 is a functional module diagram of a redundancy setting system proposed in another embodiment of the present application.

[0049] BRIEF DESCRIPTION OF THE DRAWINGS: 101, acquisition module; 102, control module; 103, execution module; 201, detection module; 202, switch signal generation module; 203, signal sending module; 204, fault detection module; 205, redundant line; 206, backup power supply. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0051] Example 1

[0052] Reference Figure 1 , shows a flowchart of the steps of a braking control method in an embodiment of the present invention, such as Figure 1 As shown, the control method is applied to a vehicle and may specifically include the following steps:

[0053] S101: Detecting the brake pedal using a displacement sensor in an electric power-assisted braking system on the vehicle;

[0054] A vehicle's electric power-assisted braking system refers to a system that helps the driver brake in order to reduce the driver's physical exertion. In gasoline-powered vehicles, the power assist is generated by utilizing the vacuum in the gasoline engine's intake pipe. In electric vehicles, an electric vacuum pump is used to generate vacuum. When the driver needs to brake, the power-assisted braking system can help the driver brake.

[0055] There are many types of electric power-assisted braking systems actually installed and used in vehicles. In this embodiment, the wire-controlled braking system iBooster is used as an example for explanation; the wire-controlled braking system iBooster mainly includes system components such as a power-assisted motor, a power-assisted transmission mechanism, a push rod mechanism, a displacement sensor, and a master cylinder.

[0056] Among them, the main function of the displacement sensor is to sense the driver's stepping on the brake pedal, that is, when the driver wants to brake, the degree of stepping on the brake pedal can be specifically reflected in the movement displacement of the brake pedal; after the displacement sensor detects the displacement change signal of the brake pedal, the displacement change signal is processed and transmitted to the corresponding control unit, and the control unit controls the power-assisting motor to perform corresponding torque adjustment to control the brake power-assisting system to perform braking assistance.

[0057] In this method, the displacement sensor in the brake assist system is directly used to detect the brake pedal, the position change data of the brake pedal during the braking process detected by the displacement sensor is obtained, and the position change data is processed to obtain a pedal displacement signal.

[0058] S102: generating a brake switch signal when detecting that the brake pedal has a preset type of displacement;

[0059] In this step, the displacement of the brake pedal is analyzed and judged. If the displacement of the brake pedal is a displacement of a preset type, a brake switch signal is generated; correspondingly, if the displacement of the brake pedal is not a displacement of a preset type, no brake switch signal is generated.

[0060] The displacement of the preset type can be set when the vehicle leaves the factory. The method for judging the displacement of the brake pedal and the displacement of the preset type can be various and can vary according to the actual model of the vehicle.

[0061] The brake switch signal is a signal related to braking generated inside the vehicle when the user steps on the brake pedal to brake the vehicle. In this embodiment, the pedal displacement signal detected by the displacement sensor can be sent to the vehicle controller through a wire harness. The vehicle controller makes a judgment. If the displacement of the brake pedal is a displacement of a preset type, a brake switch signal is generated.

[0062] S103: In response to the brake switch signal, control the brake lights on the vehicle to light up, and perform a logical judgment on the brake switch signal to execute the corresponding brake control logic.

[0063] In this step, after the brake switch signal is generated, the brake lights on the vehicle respond to the brake switch signal and light up to remind other vehicles around that the current vehicle is decelerating, thus improving driving safety; the control units in other systems of the vehicle will also respond to the brake switch signal, perform a logical judgment on the brake switch signal to execute the corresponding brake control logic. For example, the ECU of the engine performs a logical judgment on the brake switch signal to control the working state of the engine.

[0064] In summary, this method uses the displacement sensor in the electric power assisted braking system on the vehicle to detect the brake pedal, without installing other devices. Compared with installing a brake switch on the brake pedal, it has better effects.

[0065] In the related art, a special brake switch needs to be selected for installation, and corresponding fixing brackets and connectors and other components are required during installation. However, this method uses the existing displacement sensor, which can greatly reduce costs; when installing the brake switch, due to space and bracket strength limitations, it is difficult to design the brake pedal to a certain extent. If there is an error in the assembly accuracy of the brake switch, it may cause abnormal noise in the position of the brake switch, affecting the user experience; and if the connection of the brake switch is unstable or the switch fails, the brake switch signal cannot be normally sent out, resulting in the brake lights not being able to light up, which is prone to safety hazards.

[0066] In this method, a displacement sensor is used to sense the displacement of the brake pedal, which can not only reduce the installation cost and difficulty, but also improve the acquisition accuracy. Moreover, in this method, the part that executes the calculation logic can be directly applied to the vehicle's own controller without the need to install or configure other controllers, thus also saving costs.

[0067] In summary, when the user steps on the brake pedal, the displacement sensor in the electric power assisted braking system of the vehicle detects the brake pedal. When it detects that the brake pedal has undergone a preset type of displacement, a brake switch signal is generated. In response to the brake switch signal, the brake light on the vehicle is controlled to light up, and the brake switch signal is logically judged to execute the corresponding brake control logic. By using the displacement sensor in the vehicle's electric power assisted braking system to detect the displacement of the pedal, the installation cost can be reduced to a certain extent, and the accuracy of the displacement sensor detection is higher than that of the brake switch, so that the brake switch signal can be obtained more accurately, facilitating the improvement of the driving safety of the vehicle.

[0068] In other embodiments, the vehicle can also detect the displacement of the brake pedal through the pressure sensor built in the onebox line control braking system. The change in the braking system pressure caused by the displacement of the brake pedal is monitored by the pressure sensor, and a pressure change signal is sent to the controller, which converts the pressure change signal into a brake switch signal.

[0069] Refer to Figure 2 , in a feasible implementation manner, step S102: When it is detected that the brake pedal has undergone a preset type of displacement, generating a brake switch signal may specifically include the following sub-steps:

[0070] S1021: Compare the detected displacement value of the brake pedal with a preset displacement calibration value;

[0071] In this step, the pedal displacement signal of the brake pedal detected by the displacement sensor can be the displacement value of the brake pedal. The preset displacement calibration value has been set when the vehicle leaves the factory, and different models of vehicles can set different displacement calibration values according to needs.

[0072] The displacement sensor continuously collects the displacement value of the brake pedal and compares the real-time displacement value with the displacement calibration value.

[0073] S1022: When the displacement value of the brake pedal is greater than or equal to the displacement calibration value, determine that the brake pedal has undergone a preset type of displacement and generate a brake switch signal.

[0074] During specific implementation, when comparing the displacement value with the displacement calibration value, a magnitude comparison is made between the displacement value and the displacement calibration value. When the displacement value of the brake pedal is greater than or equal to the displacement calibration value, it is determined that the brake pedal has undergone a displacement of a preset type, and a brake switch signal is generated.

[0075] Exemplarily, the displacement calibration value is set to 3 mm. At the first moment, the displacement sensor detects that the displacement value of the brake pedal is 1 mm, and at the second moment, the displacement sensor detects that the displacement value of the brake pedal is 7 mm.

[0076] Since the displacement value of 1 mm is less than the displacement calibration value of 3 mm, the brake pedal at the first moment has not undergone a displacement of the preset type. It may be that the driver accidentally touched the brake pedal.

[0077] Since the displacement value of 7 mm is greater than the displacement calibration value of 3 mm, the brake pedal at the second moment has undergone a displacement of the preset type, and thus a brake switch signal is generated.

[0078] Combined with the above embodiments, referring to Figure 3 , step S103: In response to the brake switch signal, control the brake lights on the vehicle to light up, and perform a logical judgment on the brake switch signal to execute the corresponding brake control logic. In "In response to the brake switch signal, control the brake lights on the vehicle to light up", it specifically includes the following sub-steps:

[0079] S1031: Determine a lighting instruction according to the brake switch signal;

[0080] During specific implementation, the displacement sensor detects the pedal displacement signal of the brake pedal, sends the pedal displacement signal to the vehicle controller through a wire harness. The vehicle controller compares the displacement value of the brake pedal with the displacement calibration value. When the displacement value is greater than the displacement calibration value, the vehicle controller generates a brake switch signal and generates a lighting instruction according to the brake switch signal.

[0081] The vehicle controller is connected to the brake light control system of the vehicle through a wire harness. Thus, the vehicle controller generates a lighting instruction and sends the lighting instruction to the brake light control system of the vehicle to control the brake lights of the vehicle to light up.

[0082] S1032: The brake light control system of the vehicle responds to the lighting instruction and lights up the brake lights of the vehicle.

[0083] The brake light control system of the vehicle responds to the lighting instruction and thus lights up the brake lights of the vehicle. The brake lights of the vehicle include the brake lights arranged on the vehicle body and the brake reminder lights arranged on the vehicle dashboard, which can thus remind the drivers of other vehicles to pay attention and reduce the possibility of rear-end collisions.

[0084] Combined with the above embodiments, step S103: In response to the brake switch signal, control the brake lights on the vehicle to turn on, and perform a logical judgment on the brake switch signal to execute the corresponding brake control logic. In the step of performing a logical judgment on the brake switch signal to execute the corresponding brake control logic, it specifically includes:

[0085] S1033: Send the brake switch signal to the CAN bus of the vehicle;

[0086] In specific implementation, multiple controllers on the vehicle are all connected through the CAN bus. The CAN bus is the Controller Area Network. After the brake switch signal is generated, the vehicle controller can send the brake switch signal to the CAN bus of the vehicle, so as to facilitate the controllers of other systems of the vehicle to read the brake switch signal to cooperate with the braking system to decelerate the vehicle.

[0087] S1034: The power system of the vehicle responds to the brake switch signal transmitted by the CAN bus and adjusts the working state of the vehicle engine.

[0088] In this step, the vehicle engine controller can read the brake switch signal from the CAN bus. The engine controller responds to the brake switch signal and adjusts the torque of the engine, and then cooperates with the vehicle's brake pads to decelerate the vehicle.

[0089] In other embodiments, the ESP Electronic Stability Program that also reads the brake switch signal from the CAN bus. ESP responds to the brake switch signal and collects the actual driving speed of the vehicle, and then can improve the safety and controllability of the vehicle according to the actual driving speed.

[0090] Refer to Figure 4 , in a feasible implementation manner, if a failure occurs in the electric power assisted braking system, it may cause the displacement sensor to not be able to detect the displacement normally. In order not to affect the generation of the vehicle's brake switch signal when the displacement sensor cannot detect, the control method further includes the following steps:

[0091] S301: Detect whether a failure occurs in the electric power assisted braking system of the vehicle, and the failure includes a power supply shortage state and an internal failure state;

[0092] Taking the iBooster system as an example, the working voltage of the iBooster system is provided by the vehicle's battery. If the battery power is insufficient or damaged, it will cause the iBooster system to fail, affecting the operation of the internal components of the iBooster system, and the displacement sensor cannot work properly to collect the pedal displacement signal; when there is an internal mechanical failure in the iBooster system, it will also cause the displacement sensor to not be able to collect the pedal displacement signal normally.

[0093] During specific implementation, the iBooster system effectively determines whether the power assist system is normal before the driver requests braking. The system performs a self-check every 20 seconds to evaluate the effectiveness of the system, thereby providing effective guarantee for each brake pedal operation of the driver. At the same time, this self-check action is accompanied by slight working noise, which is difficult to detect during driving and can be noticed by careful drivers when the vehicle is parked in place without stepping on the brake.

[0094] Through the self-check function of the iBooster system, the working state of the current iBooster system can be detected. In other embodiments, an inspection device can also be separately set to detect the iBooster system.

[0095] S302. When it is detected that a fault occurs in the electric power-assisted braking system of the vehicle, if it is detected that the electric power-assisted braking system of the vehicle receives a stepping signal of the brake pedal, a preset redundant circuit is called;

[0096] During specific implementation, if the electric power-assisted braking system iBooster detects a fault, the displacement sensor cannot work. To ensure the generation of the brake switch signal, when the electric power-assisted braking system receives a stepping signal of the brake pedal, a redundant circuit pre-set in the iBooster system is called. In a real-time mode, the redundant circuit is pre-set in the control unit of the iBooster system. The control unit of the iBooster system responds to the failure result obtained from the self-check of the iBooster system and immediately calls the preset redundant circuit.

[0097] S303. Through the redundant circuit, the electric power-assisted braking system directly sends the displacement signal of the brake pedal;

[0098] During specific implementation, the control unit of the iBooster system calls the redundant circuit. When the redundant circuit is operating, the stepping signal of the brake pedal received by the electric power-assisted braking system is directly sent to the vehicle controller.

[0099] Therefore, step S102, when it is detected that the brake pedal has a preset type of displacement, generating a brake switch signal, further includes:

[0100] Generating a brake switch signal in response to the displacement signal of the brake pedal directly sent by the electric power-assisted braking system.

[0101] After the vehicle controller receives the displacement signal of the brake pedal directly sent by the electric power-assisted braking system, if it determines that the displacement signal of the brake pedal has a preset type of displacement, a brake switch signal is generated.

[0102] S304. When a power supply shortage fault occurs in the electric power assisted braking system of the vehicle, activate the backup power supply also configured in the electric power assisted braking system of the vehicle to provide a backup operating voltage to the electric power assisted braking system;

[0103] A backup power supply is preset in the electric power assisted braking system of the vehicle. When it is detected that the power supply from the vehicle's battery to the electric power assisted braking system is deficient, control the preset backup power supply to supply power to the electric power assisted braking system, so that the electric power assisted braking system can operate normally.

[0104] For example, in the iBooster system, if the vehicle's on-vehicle power supply does not meet the load operation requirements, the iBooster system will enter the energy-saving mode. When the on-vehicle power supply fails, the iBooster may stop working. Therefore, in order to reduce the impact on the iBooster system, a backup operating voltage is provided to the iBooster system, so that the iBooster system can operate normally without affecting the determination of the brake switch signal.

[0105] S305. Send the fault information to the display instrument of the vehicle through the redundant line, so that the display instrument of the vehicle outputs the fault information.

[0106] When a fault occurs in the electric power assisted braking system and the redundant line preset is called, the display instrument of the vehicle can be controlled to output the fault information to prompt the user that there is a problem with the detection of the displacement sensor, so that the electric power assisted braking system can be repaired in time.

[0107] The braking control method of the present application has the following effects:

[0108] 1. Replace the brake switch and related fixed brackets and brake switch connectors, reducing the cost of the whole vehicle;

[0109] 2. Compared with the brake switch, the displacement sensor has higher detection accuracy, so that the brake switch signal can be obtained more accurately, which is convenient for improving the driving safety of the vehicle;

[0110] 3. The brake switch is set on the brake pedal. After canceling the brake switch, the design difficulty of the brake pedal can be reduced, and the brake pedal can be made lighter;

[0111] 4. When a fault occurs in the electric power assisted system and the displacement sensor cannot work normally, call the preset redundant line, and the electric power assisted braking system directly sends the displacement signal of the brake pedal, reducing the impact on the generation of the brake switch signal.

[0112] Embodiment 2

[0113] Based on the same inventive concept, refer to Figure 5As shown, a functional block diagram of a braking control device according to an embodiment of the present application is shown. As Figure 5 shown, the control device is applied to a vehicle, and the control device may specifically include:

[0114] An acquisition module 101, configured to detect a brake pedal through a displacement sensor in an electric power assisted braking system on the vehicle;

[0115] A control module 102, configured to generate a brake switch signal when it is detected that the brake pedal has undergone a preset type of displacement;

[0116] An execution module 103, configured to control the brake lights on the vehicle to light up in response to the brake switch signal, and perform a logical judgment on the brake switch signal to execute corresponding braking control logic.

[0117] In a feasible implementation manner, the detection module 100 may be a displacement sensor in an electric power assisted braking system iBooster on the vehicle; the control module 200 may adopt a controller inside the vehicle, such as a vehicle control unit VCU, and the execution module 300 may include a brake light control system, a power system, and a vehicle electronic stability system of the vehicle.

[0118] Wherein, the displacement sensor and the vehicle control unit may be connected by a wire harness, and the vehicle control unit and the brake light control system may also be connected by a wire harness.

[0119] After the driver steps on the brake pedal, the displacement sensor detects the displacement distance of the brake pedal and sends the detection result to the vehicle control unit. The vehicle control unit judges the detected displacement value. If it is detected that the brake pedal has undergone a preset type of displacement, a brake switch signal is generated; the vehicle control unit sends the brake switch signal to the brake light control system to control the lighting of the brake lights; the vehicle control unit may also send the brake switch signal to the CAN bus of the vehicle, and the controllers of other systems of the vehicle can read the brake switch signal from the CAN bus and perform logical judgment to execute corresponding braking control logic.

[0120] By using a displacement sensor in the vehicle's electric power assisted braking system to detect the displacement of the pedal, it is not necessary to install a separate brake switch, which can reduce the installation cost to a certain extent, and the detection accuracy of the displacement sensor is higher than that of the brake switch, so that the brake switch signal can be obtained more accurately, which is convenient for improving the driving safety of the vehicle.

[0121] Embodiment Three

[0122] Refer to Figure 6 , based on the same inventive concept, Embodiment Three of the present application provides a redundancy setting system, and the system includes:

[0123] The detection module 201 is configured to detect the brake pedal through a displacement sensor;

[0124] The switch signal generation module 202 is configured to generate a brake switch signal when it detects that the brake pedal has undergone a preset type of displacement;

[0125] The signal sending module 203 is configured to send the brake switch signal to the ECU of the vehicle, control the brake lights on the vehicle to light up through the ECU of the vehicle, and perform logical judgment on the brake switch signal to execute corresponding brake control logic.

[0126] Specifically, the system further includes:

[0127] The fault detection module 204 is configured to detect whether a fault occurs in the electric power assisted braking system of the vehicle, where the fault includes a power supply shortage state and an internal fault state;

[0128] The redundant circuit 205 is configured to directly send the displacement signal of the brake pedal to the ECU of the vehicle when it detects that a fault occurs in the electric power assisted braking system of the vehicle, so that the ECU of the vehicle generates the brake switch signal according to the displacement signal;

[0129] The backup power supply 206 is configured to provide a backup operating voltage to the electric power assisted braking system when it detects that the electric power assisted braking system of the vehicle is in a power supply shortage state.

[0130] Embodiment 4

[0131] Based on the same inventive concept, Embodiment 4 of the present application provides a vehicle, on which a control device provided in Embodiment 2 or a redundant setting system provided in Embodiment 3 is provided, and the control device or the redundant setting system executes the control method provided in Embodiment 1.

[0132] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0133] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a device, or a computer program product. Therefore, the embodiments of the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0134] Embodiments of the present application are described with reference to the flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate means for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or means for implementing the functions specified in multiple blocks.

[0135] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or means for implementing the functions specified in multiple blocks.

[0136] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, such that a series of operation steps are executed on the computer or other programmable terminal device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable terminal device provide steps for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or means for implementing the functions specified in multiple blocks.

[0137] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0138] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or terminal device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the element.

[0139] In this text, specific examples are used to illustrate the principles and implementation manners of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. At the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A control method for collecting braking signals, applied to a vehicle, characterized in that, The method includes: Detecting a brake pedal via a displacement sensor in an electric power assisted braking system on a vehicle; Generating a brake switch signal when a displacement of a preset type occurs in the detected brake pedal; In response to the brake switch signal, controlling a brake light on the vehicle to turn on and performing a logical judgment on the brake switch signal to execute corresponding brake control logic; The generating a brake switch signal when a displacement of a preset type occurs in the detected brake pedal includes: Comparing a detected displacement value of the brake pedal with a preset displacement calibration value; When the displacement value of the brake pedal is greater than or equal to the displacement calibration value, determining that a displacement of a preset type occurs in the brake pedal and generating a brake switch signal; or When a failure occurs in the electric power assisted braking system of the vehicle, in response to a displacement signal of the brake pedal directly sent by the electric power assisted braking system, generating a brake switch signal, where the failure includes a power supply shortage state and an internal failure state.

2. The control method according to claim 1, wherein The performing a logical judgment on the brake switch signal to execute corresponding brake control logic includes: Sending the brake switch signal to a CAN bus of the vehicle; A power system of the vehicle adjusts an operating state of a vehicle engine in response to the brake switch signal transmitted by the CAN bus.

3. The control method according to claim 1, wherein The generating a brake switch signal when a failure occurs in the electric power assisted braking system of the vehicle, in response to a displacement signal of the brake pedal directly sent by the electric power assisted braking system includes: Detecting whether a failure occurs in the electric power assisted braking system of the vehicle; When a failure occurs in the electric power assisted braking system of the vehicle, if a stepping signal of the brake pedal is detected in the electric power assisted braking system of the vehicle, invoking a preset redundant line; Via the redundant line, directly sending a displacement signal of the brake pedal by the electric power assisted braking system; In response to the displacement signal of the brake pedal directly sent by the electric power assisted braking system, generating a brake switch signal.

4. The control method according to claim 3, characterized in that The electric power assisted braking system of the vehicle is further configured with a backup power supply, and the method further includes: When a failure of power supply shortage occurs in the electric power assisted braking system of the vehicle, starting the backup power supply to provide a backup operating voltage to the electric power assisted braking system.

5. The control method according to claim 4, wherein The method further includes: Sending a fault message to a display instrument of the vehicle via the redundant line so that the display instrument of the vehicle outputs the fault message.

6. A control device for collecting braking signals, applied to a vehicle, characterized in that, The device includes: An acquisition module for detecting a brake pedal via a displacement sensor in an electric power assisted braking system on a vehicle; A control module, configured to generate a brake switch signal when detecting that the brake pedal has undergone a preset type of displacement; compare the detected displacement value of the brake pedal with a preset displacement calibration value; when the displacement value of the brake pedal is greater than or equal to the displacement calibration value, determine that the brake pedal has undergone the preset type of displacement and generate a brake switch signal; or when detecting that a fault occurs in the electric power assisted braking system of the vehicle, generate a brake switch signal in response to the displacement signal of the brake pedal directly sent by the electric power assisted braking system, where the fault includes a power supply shortage state and an internal fault state; An execution module, configured to control the brake lights on the vehicle to turn on in response to the brake switch signal, and perform logical judgment on the brake switch signal to execute corresponding brake control logic.

7. A redundant setting system, applied to a vehicle, characterized in that, The system includes: A detection module, configured to detect the brake pedal through a displacement sensor in the electric power assisted braking system of the vehicle; A switch signal generation module, configured to generate a brake switch signal when detecting that the brake pedal has undergone a preset type of displacement; compare the detected displacement value of the brake pedal with a preset displacement calibration value; when the displacement value of the brake pedal is greater than or equal to the displacement calibration value, determine that the brake pedal has undergone the preset type of displacement and generate a brake switch signal; or when detecting that a fault occurs in the electric power assisted braking system of the vehicle, generate a brake switch signal in response to the displacement signal of the brake pedal directly sent by the electric power assisted braking system, where the fault includes a power supply shortage state and an internal fault state; A signal sending module, configured to send the brake switch signal to the ECU of the vehicle, control the brake lights on the vehicle to turn on through the ECU of the vehicle, and perform logical judgment on the brake switch signal to execute corresponding brake control logic.

8. The redundant setting system according to claim 7, characterized in that, The system further includes: A fault detection module, configured to detect whether a fault occurs in the electric power assisted braking system of the vehicle; A redundant circuit, configured to directly send the displacement signal of the brake pedal to the ECU of the vehicle when detecting that a fault occurs in the electric power assisted braking system of the vehicle, so that the ECU of the vehicle generates the brake switch signal according to the displacement signal; A backup power supply, configured to provide a backup working voltage to the electric power assisted braking system when detecting that a power supply shortage state occurs in the electric power assisted braking system of the vehicle.

9. A vehicle, characterized in that, The vehicle is provided with the control device according to claim 6 or the redundant setting system according to any one of claims 7 - 8, and the control device and the redundant setting system execute the method according to any one of claims 1 - 5.

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