Brake system and pedal displacement sensor management method of brake system

Abstract

The invention provides a brake system and a pedal displacement sensor management method of the brake system. A brake system includes: a pedal displacement sensor that senses a displacement of a brake pedal; a memory for storing identification information of the pedal displacement sensor; the controller is electrically connected with the pedal displacement sensor and the memory, and receives identification information of the pedal displacement sensor from the pedal displacement sensor on the basis of starting of a vehicle; whether the pedal displacement sensor is replaced or not is determined on the basis of a comparison between the received identification information and the stored identification information.

Description

Technical Field

[0001] The disclosed invention relates to a braking system and a method for managing the pedal displacement sensor of the braking system. Background Technology

[0002] As a device that controls vehicle braking according to the driver's braking intention, the brake pedal transmits a signal to the braking system when the displacement of the brake pedal is sensed by a pedal displacement sensor installed on the brake pedal, thereby enabling the braking system to be used for vehicle braking control.

[0003] In braking systems such as Integrated Dynamic Brake (IDB) and Electro-Mechanical Brake (EMB), the braking amount is determined based on the output signal of a pedal displacement sensor. Therefore, the amount of movement relative to the zero point of the pedal displacement sensor is crucial. In particular, in the case of an external pedal displacement sensor, installation tolerances may occur. To eliminate the impact of these tolerances on brake control, zero-point calibration of the pedal displacement sensor is performed during the final stage of vehicle manufacturing (EOL).

[0004] Furthermore, when a pedal displacement sensor needs to be replaced due to a malfunction, replacing only the pedal displacement sensor itself could potentially result in significant installation tolerances. Therefore, to minimize the installation tolerances of the pedal displacement sensor and improve the ease of tolerance management, it is advisable to replace the entire component housing the pedal displacement sensor.

[0005] In addition, when replacing components equipped with pedal displacement sensors, the standard procedure is to perform zero-point calibration of the pedal displacement sensors. However, in actual repair work, it is impossible to confirm whether the zero-point calibration of the pedal displacement sensors has been performed in accordance with this standard.

[0006] Therefore, a new technology is needed to sense and manage the replacement of pedal displacement sensors. Summary of the Invention

[0007] One aspect of the disclosed invention provides a braking system for sensing and managing the replacement of a pedal displacement sensor for the brake pedal, and a method for managing the pedal displacement sensor of the braking system.

[0008] One aspect of the disclosed invention provides a braking system and a method for managing the pedal displacement sensor of a braking system by guiding the zero-point calibration of the pedal displacement sensor through the replacement of the pedal displacement sensor used to sense the brake pedal.

[0009] One aspect of the disclosed invention provides a braking system and a method for managing the pedal displacement sensor of the braking system that can eliminate the tolerance management process of an external pedal displacement sensor, thereby saving manufacturing costs.

[0010] One aspect of the disclosed invention provides a braking system and a method for managing the pedal displacement sensor of a braking system that, when a pedal displacement sensor fails, replaces only the pedal displacement sensor itself instead of the conventional method of replacing the entire assembly including the pedal displacement sensor, thereby saving maintenance costs.

[0011] A side braking system according to the disclosed invention includes: a pedal displacement sensor that senses the displacement of the brake pedal; a memory that stores identification information of the pedal displacement sensor; and a controller electrically connected to the pedal displacement sensor and the memory, wherein the controller receives the identification information of the pedal displacement sensor from the pedal displacement sensor based on the starting of the vehicle, and determines whether the pedal displacement sensor needs to be replaced based on a comparison between the received identification information and the stored identification information.

[0012] If the received identification information and the stored identification information are different, the controller determines that the pedal displacement sensor has been replaced.

[0013] If the first identification information received from the pedal displacement sensor during the current time period is different from the stored identification information, the controller increases the count value. If the increased count value is greater than a predetermined reference count value, the controller determines that the pedal displacement sensor has been replaced.

[0014] The controller compares the first identification information with the second identification information received from the pedal displacement sensor in the time period immediately preceding the current time period based on the increase of the count value, and determines whether the increased count value is greater than the predetermined reference count value if the first identification information and the second identification information are the same.

[0015] The controller sets the increased count value to 0 based on the fact that the first identification information and the second identification information are different, and the increased count value is greater than 1, and receives identification information from the pedal displacement sensor.

[0016] Based on the decision that the pedal displacement sensor has been replaced, the controller stores the received identification information in the memory as the identification information of the pedal displacement sensor.

[0017] Based on the decision that the pedal displacement sensor has been replaced, the controller transmits a control signal to the vehicle control device so that the vehicle's output device outputs a notification guiding the zero-point calibration of the pedal displacement sensor.

[0018] If the received identification information and the identification information stored in the memory are the same, the controller determines that the pedal displacement sensor has not been replaced.

[0019] The controller receives the identification information of the pedal displacement sensor from the pedal displacement sensor via SENT (Single Edge Nibble Transmission).

[0020] The controller receives slow-channel data, including the identification information of the pedal displacement sensor, from the pedal displacement sensor via SENT communication.

[0021] In a disclosed invention, a method for managing a pedal displacement sensor in a side braking system, based on the starting and opening of the vehicle, identification information of the pedal displacement sensor is received from a pedal displacement sensor that senses the displacement of the vehicle's brake pedal, and the need to replace the pedal displacement sensor is determined by comparing the received identification information with identification information stored in a memory.

[0022] Determining whether the pedal displacement sensor has been replaced includes: if the received identification information and the stored identification information are different, then the pedal displacement sensor has been replaced.

[0023] When determining whether the pedal displacement sensor needs to be replaced, if the first identification information received from the pedal displacement sensor in the current time period is different from the stored identification information, the count value is increased. If the increased count value is greater than a predetermined reference count value, it is determined that the pedal displacement sensor has been replaced.

[0024] Determining whether the pedal displacement sensor needs to be replaced includes: comparing the first identification information and the second identification information received from the pedal displacement sensor in the time period immediately preceding the current time period based on the increase in the count value; and determining whether the increased count value is greater than the predetermined reference count value if the first identification information and the second identification information are the same.

[0025] Determining whether the pedal displacement sensor needs to be replaced includes: if the first identification information and the second identification information are different and the increased count value is greater than 1, setting the increased count value to 0 and receiving identification information from the pedal displacement sensor.

[0026] The method for managing the pedal displacement sensor of the braking system further includes: based on the determination that the pedal displacement sensor has been replaced, storing the received identification information as the identification information of the pedal displacement sensor in the memory.

[0027] The method for managing the pedal displacement sensor of the braking system further includes: based on the determination that the pedal displacement sensor has been replaced, transmitting a control signal to the vehicle control device so that the vehicle output device outputs a notification guiding the zero-point calibration of the pedal displacement sensor.

[0028] Determining whether the pedal displacement sensor has been replaced includes: if the received identification information and the identification information stored in the memory are the same, it is determined that the pedal displacement sensor has not been replaced.

[0029] Receiving the identification information from the pedal displacement sensor includes: receiving the identification information from the pedal displacement sensor via SENT (Single Edge Nibble Transmission) communication.

[0030] Receiving the identification information from the pedal displacement sensor includes: receiving slow channel data including the identification information of the pedal displacement sensor from the pedal displacement sensor via the SENT communication. Attached Figure Description

[0031] Figure 1 This is a block diagram illustrating a portion of the structure of a braking system according to one embodiment.

[0032] Figure 2 This is a diagram illustrating the structure of a brake pedal and a pedal displacement sensor according to one embodiment.

[0033] Figure 3 This is a flowchart illustrating the operation of a braking system in one embodiment.

[0034] Figure 4 This is a flowchart illustrating the operation of a braking system in one embodiment. Detailed Implementation

[0035] Throughout this specification, the same symbols refer to the same constituent elements. This specification does not describe all elements in the embodiments, and descriptions of content well-known in the art or repeated between embodiments are omitted. Terms such as 'part, module, component, block' used in this specification can be implemented in software or hardware. According to embodiments, multiple 'parts, modules, components, blocks' may embody a single constituent element, or a single 'part, module, component, block' may include multiple constituent elements.

[0036] Throughout the instruction manual, when referring to a part being 'connected' to other components, this includes not only direct connections but also indirect connections, including connections via wireless communication networks.

[0037] Furthermore, when referring to a component as 'including' a certain constituent element, unless otherwise specified, it does not exclude other constituent elements, but rather indicates that other constituent elements may also be included.

[0038] Throughout the specification, the description of a component as being 'on' other components includes not only cases where a component is in contact with other components, but also cases where other components exist between the two components.

[0039] The terms "first" and "second" are used to distinguish one constituent element from other constituent elements, and these terms do not have a limiting effect on the constituent elements.

[0040] Unless otherwise specified in the text, singular expressions include plural expressions.

[0041] In each step, the symbols are used for ease of explanation and do not indicate the order of the steps. If a specific order is not explicitly stated in the text, the steps may be performed in a different order than that stated.

[0042] The disclosed embodiments of the invention provide a braking system for sensing and managing the replacement of a pedal displacement sensor for the brake pedal, and a method for managing the pedal displacement sensor of the braking system.

[0043] Furthermore, the disclosed embodiments of the invention provide a braking system and a method for managing the pedal displacement sensor of a braking system that guides the zero-point calibration of the pedal displacement sensor by replacing the pedal displacement sensor used to sense the brake pedal.

[0044] The working principle and embodiments of the disclosed invention will now be described with reference to the accompanying drawings.

[0045] Figure 1 This is a block diagram illustrating a portion of the structure of a braking system according to one embodiment.

[0046] Figure 2 This is a diagram illustrating the structure of a brake pedal and a pedal displacement sensor according to one embodiment.

[0047] Reference Figure 1 The braking system 1 includes a brake pedal 10, a pedal displacement sensor PTS, a controller 110, and / or a braking module 130.

[0048] The brake pedal 10 can receive input from the driver for braking the vehicle.

[0049] For example, the brake pedal 10 is located in the lower part of the cab, which can be controlled by the driver's foot.

[0050] The driver presses the brake pedal 10 based on the intention to brake the vehicle, thereby disengaging the brake pedal 10 from the reference position and moving it.

[0051] One or more pedal displacement sensors (PTS) are configured on the brake pedal 10 to output displacement data (or signals) of the brake pedal 10 to the controller 110.

[0052] For example, displacement data includes the distance and / or speed of movement of the self-brake pedal 10 from its reference position.

[0053] For example, the pedal displacement sensor (PTS) can be an external pedal displacement sensor.

[0054] Reference Figure 2 The pedal displacement sensor PTS includes a sensor housing 110 and a lever 160.

[0055] The sensor housing 110 has an internal space in which a pedal displacement sensor (PTS) is configured.

[0056] The pedal displacement sensor (PTS) can measure the rotation angle of the lever by 160 degrees.

[0057] The pedal displacement sensor (PTS) can be attached to one side of the pedal arm 12 of the brake pedal 10. When the driver presses down on the pedal pad 14 located at the front end of the pedal arm 12, the pedal arm 12 pivots. At this time, the pedal displacement sensor (PTS) attached to the pedal arm 12 measures the pivot rotation angle of the pedal arm 12 by measuring the rotation angle of the lever 160.

[0058] The pedal displacement sensor PTS outputs its identification information to the controller 110. For example, the identification information of the pedal displacement sensor PTS may include the identifier (ID) of the pedal displacement sensor PTS.

[0059] The pedal displacement sensor (PTS) includes a communication circuit 11, which transmits the displacement data of the brake pedal 10 and / or the identification information of the pedal displacement sensor (PTS) to the controller 110.

[0060] For example, communication circuit 11 performs data communication via communication such as SENT.

[0061] In SENT communication, data is transmitted in the form of data packets, which include slow channel data. The slow channel data includes additional information about the pedal displacement sensor (PTS), such as the PTS identification information and / or status information.

[0062] In addition, data is transmitted to the controller 110 via a fast channel in SENT communication, and the displacement data of the brake pedal 10 may be included in the fast channel data.

[0063] The controller 110 performs overall control of the braking system 1.

[0064] The controller 110 is electrically connected to the pedal displacement sensor PTS and / or the brake module 130, and controls the pedal displacement sensor PTS and / or the brake module 130.

[0065] The controller 110 receives displacement data of the brake pedal 10 and / or identification information of the pedal displacement sensor PTS from the pedal displacement sensor PTS.

[0066] The controller 110 controls the braking module 130 based on the displacement data of the brake pedal 10 received from the pedal displacement sensor PTS.

[0067] The controller 110 determines whether the pedal displacement sensor PTS has been replaced based on the identification information of the pedal displacement sensor PTS received from the PTS.

[0068] The controller 110 transmits a control signal to a vehicle control device (not shown) based on the determination that the pedal displacement sensor PTS has been replaced, so that the vehicle output device (not shown) outputs a notification guiding the zero-point calibration of the pedal displacement sensor PTS.

[0069] For example, controller 110 is electrically or communicatively connected to vehicle control device via communication circuit 111, thereby transmitting control signals to vehicle control device (not shown).

[0070] Without zero-point calibration after replacing the pedal displacement sensor PTS, the initial output voltage value of the pedal displacement sensor PTS is set regardless of the actual position of the brake pedal 10.

[0071] As a result, a difference arises between the output voltage value (Output(V)) of the pedal displacement sensor PTS generated based on the movement of the brake pedal 10 and the actual voltage value. When this data is transmitted to the controller 110, the controller 110 cannot correctly identify the state of the brake pedal 10, resulting in the inability to perform the actual required braking control.

[0072] Under the control of the vehicle control device, when a notification guiding zero-point calibration is output through an output device, such as a display and / or speaker, the driver, vehicle inspector, or operator recognizes this and performs zero-point calibration of the pedal displacement sensor (PTS), thereby preventing the aforementioned problems.

[0073] For example, the operator gradually moves the pedal displacement sensor (PTS) and confirms the output signal of the pedal displacement sensor (PTS). When the output signal is within the specified range, the pedal displacement sensor (PTS) is fixed, thereby performing zero-point calibration of the pedal displacement sensor (PTS).

[0074] The controller 110 includes communication circuitry 111, memory 113, and / or processor 115.

[0075] For example, controller 110 may be an electronic control unit (ECU).

[0076] The communication circuit 111 can perform digital communication and / or analog communication, etc.

[0077] For example, the communication circuit 111 performs data communication through communication protocols such as SIP (Serial Peripheral Interface), I2C (Inter-Integrated Circuit), UART (Universal Asynchronous Receiver-Transmitter), and / or SENT (Single Edge Nibble Transmission).

[0078] In addition, the communication circuit 111 includes a transmitting unit, a receiving unit, terminals, wiring and / or connectors, etc., to perform analog communication.

[0079] For example, the controller 110 and the pedal displacement sensor PTS communicate via SENT communication.

[0080] The memory 113 stores or saves programs and data used to embody the actions of the structure included in the controller 110, i.e., the actions of the controller 110.

[0081] The memory 113 stores the identification information of the pedal displacement sensor PTS.

[0082] For example, when manufacturing the braking system 1, the identification information of the pedal displacement sensor PTS is stored in the memory 113 by the manufacturer.

[0083] In addition, when replacing the pedal displacement sensor PTS, the identification information of the pedal displacement sensor PTS is stored in the memory 113 by the controller 110.

[0084] For example, when it is determined that the pedal displacement sensor PTS has been replaced, the controller 110 stores the identification information of the replaced pedal displacement sensor PTS in the memory 113.

[0085] In addition, the controller 110 stores the identification information of the pedal displacement sensor PTS received from the pedal displacement sensor PTS according to each time period into the memory 113.

[0086] The memory 113 provides the stored programs and data to the processor 115 and saves the temporary data generated during the operation of the processor 115.

[0087] For example, memory 113 includes non-volatile memory such as read-only memory (ROM), erasable programmable read-only memory (EPROM), and flash memory.

[0088] Additionally, memory 113 also includes volatile memories such as S-RAM (Static Random Access Memory) and D-RAM (Dynamic Random Access Memory).

[0089] The processor 115 can provide control signals for controlling the movement of structures included in the braking system 1.

[0090] The braking module 130 is connected to the brake pedal 10, operates and is controlled mechanically and / or electrically, and supplies hydraulic pressure to the wheel cylinders (not shown) of each wheel of the vehicle.

[0091] For example, although not shown, the braking module 130 includes: a reservoir (not shown) that houses and stores pressurized medium inside; an integrated master cylinder (not shown) that provides the driver with the reaction force generated according to the pressure applied by the brake pedal 10 while pressurizing and discharging the pressurized medium housed inside; a hydraulic supply device (not shown) that receives the driver's braking intention by an electrical signal from a pedal displacement sensor PTS that senses the displacement of the brake pedal 10 and generates hydraulic pressure for the pressurized medium through mechanical action; a hydraulic control unit (not shown) that controls the hydraulic pressure supplied from the hydraulic supply device; a reservoir flow path (not shown) that hydraulically connects the reservoir and the integrated master cylinder; a transfer control unit (not shown) disposed between the hydraulic supply device and the reservoir to control the flow of pressurized medium; and a check flow path (not shown) configured to connect the integrated master cylinder and the hydraulic supply device to check for leaks in various components.

[0092] Additionally, for example, although not shown, the braking module 130 includes: a pair of pads (not shown) disposed in such a way as to apply pressure to brake discs (not shown) that rotate together with the individual wheels (FL, FR, RL, RR) of the vehicle; a caliper housing (not shown) that actuates the pair of pads; a piston (not shown) that is retractably disposed inside the caliper housing; a power conversion unit (not shown) that receives a rotational driving force for moving the piston, converts it into a linear driving force, and transmits the linear driving force to the piston; and / or a brake motor that generates a rotational driving force for moving the piston.

[0093] In addition, in the above Figure 1 In the embodiments described, the case where there is only one controller 110 is illustrated, but according to additional embodiments, the controller 110 may include a first controller (not shown) and a second controller (not shown).

[0094] Thus, one of the first controllers and the second controller acts as the main controller to control the braking system 1, while the other acts as the secondary controller to control the braking system 1 when the main controller cannot operate.

[0095] In addition, in the above Figure 2 The structure of the brake pedal 10 and pedal displacement sensor PTS in the embodiment is one embodiment and can be changed according to the designer.

[0096] Figure 3 This is a flowchart of the operation of the braking system 1 and / or controller 110 in one embodiment.

[0097] Reference Figure 3 The braking system 1 receives the identification information (301) of the pedal displacement sensor PTS from the pedal displacement sensor PTS based on the start-up of the vehicle.

[0098] The braking system 1 identifies the start-up of the vehicle based on the power supply from the braking system 1 and / or the signal reception from the vehicle control device.

[0099] The braking system 1 receives the identification information of the pedal displacement sensor PTS from the pedal displacement sensor PTS each time the vehicle is started.

[0100] The braking system 1 determines whether the pedal displacement sensor PTS needs to be replaced based on the comparison between the identification information received by the pedal displacement sensor PTS and the identification information of the pedal displacement sensor PTS stored in the memory 113, and outputs the result (303).

[0101] If the identification information received by the pedal displacement sensor PTS is the same as the identification information of the pedal displacement sensor PTS stored in the memory 113, the braking system 1 determines that the pedal displacement sensor PTS has not been replaced.

[0102] If the identification information received by the pedal displacement sensor PTS is different from the identification information of the pedal displacement sensor PTS stored in the memory 113, the braking system 1 determines that the pedal displacement sensor PTS has been replaced.

[0103] If the identification information received by the pedal displacement sensor PTS is different from the identification information of the pedal displacement sensor PTS stored in the memory 113, the braking system 1 further verifies whether the pedal displacement sensor PTS has actually been replaced or whether the error is due to temporary environmental changes or operation.

[0104] For example, if the identification information received from the pedal displacement sensor PTS during the current time period is different from the identification information stored in the memory 113, the braking system 1 can increase the count value.

[0105] The braking system 1 compares the first identification information received from the pedal displacement sensor PTS in the current time period with the second identification information received in the immediate preceding time period, based on the increase of the count value.

[0106] For example, if the current time period is the initial time period after the vehicle is started and the identification information is received from the pedal displacement sensor PTS, the braking system 1 will re-execute the action starting from the increase of the above count value.

[0107] If the first identification information and the second identification information are the same, the braking system 1 determines whether the increased count value is greater than the predetermined maximum reference count value by comparing the increased count value with a predetermined reference count value.

[0108] If the increased count value is greater than the predetermined reference count value, the braking system 1 determines that the pedal displacement sensor PTS has been replaced; otherwise, it receives identification information from the pedal displacement sensor PTS and repeatedly performs the above-mentioned actions based on the comparison between the received identification information and the identification information stored in the memory 113.

[0109] In addition, if the first identification information and the second identification information are different, the braking system 1 selects the increment count value as 0, receives identification information from the pedal displacement sensor PTS, and repeatedly performs the above-mentioned action based on the comparison between the received identification information and the identification information stored in the memory 113.

[0110] The braking system 1 responds to the comparison between the received identification information and the identification information stored in the memory 113 by comparing whether the increased count value is greater than 1, and determines whether the current time period is the initial time period after the vehicle is started and the identification information is received from the pedal displacement sensor PTS.

[0111] For example, if the increased count value is greater than 1, the braking system 1 determines that the current time period is not the initial time period for receiving identification information from the pedal displacement sensor PTS after the vehicle is started and turned on; otherwise, it determines that the current time period is the initial time period for receiving identification information from the pedal displacement sensor PT after the vehicle is started and turned on.

[0112] Figure 4 This is a flowchart of the operation of the braking system 1 and / or controller 110 in one embodiment.

[0113] Reference Figure 4 The braking system 1 determines whether the power supply to the braking system 1 is normal and whether the memory 113 is normal (401).

[0114] The braking system 1 determines whether the power supply to the braking system 1 is normal and whether the memory 113 is normal based on the start-up of the vehicle.

[0115] If the power supply to the braking system 1 is normal and the memory 113 is functioning normally, the braking system 1 executes action (403); otherwise, it executes action (425).

[0116] Braking system 1 receives the identifier ID (403) of pedal displacement sensor PTS from pedal displacement sensor PTS.

[0117] The braking system 1 responds to the condition that the power supply to the braking system 1 is normal and the memory 113 is normal, and receives the identifier ID of the pedal displacement sensor PTS from the pedal displacement sensor PTS.

[0118] Braking system 1 receives the identifier of pedal displacement sensor PTS from pedal displacement sensor PTS via SENT communication.

[0119] For example, braking system 1 receives slow channel data including the identifier of pedal displacement sensor PTS from pedal displacement sensor PTS via SENT communication, and identifies the identifier of pedal displacement sensor PTS received from pedal displacement sensor PTS based on this data.

[0120] Braking system 1 determines whether the pedal displacement sensor (PTS) identifier has been fully received and whether the pedal displacement sensor (PTS) identifier has not been fully checked (405).

[0121] The braking system 1 determines whether the identifier of the pedal displacement sensor PTS has not been checked based on the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS.

[0122] For example, if the braking system 1 receives the identifier of the pedal displacement sensor PTS for the first time after the vehicle is started and turned on, it determines that the identifier of the pedal displacement sensor PTS has not been checked.

[0123] In addition, the braking system 1 responds to the 423 action described later and determines that the identifier check is incomplete.

[0124] If the identifier of the pedal displacement sensor PTS is in the received state or the identifier check of the pedal displacement sensor PTS is in the incomplete state, the braking system 1 performs the (407) action; otherwise, the action of this embodiment ends.

[0125] The braking system 1 responds to the determination that the identifier of the pedal displacement sensor PTS is in the received state and the identifier check of the pedal displacement sensor PTS is in the incomplete state, and determines whether the identifier of the pedal displacement sensor PTS stored in the memory 11 is the same as the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS (407).

[0126] If the identifier of the pedal displacement sensor PTS stored in memory 113 is the same as the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS, the braking system 1 performs operation (409); otherwise, it performs operation (411).

[0127] The braking system 1 responds to the case where the identifier of the pedal displacement sensor PTS stored in the memory 113 is the same as the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS, and determines that the pedal displacement sensor PTS identifier check is completed (409).

[0128] The braking system 1 responds to the case where the identifier of the pedal displacement sensor PTS stored in the memory 113 is different from the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS by incrementing the count value (ID CheckCount) applied in the brake pedal displacement sensor PTS identifier check by 1 (411).

[0129] For example, if the identifier of the pedal displacement sensor PTS first stored in memory 113 after the vehicle is started is the same as the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS, the braking system 1 will increment the count value from 0 to 1.

[0130] The count value can be an additional count of the number of times the identifier of the pedal displacement sensor PTS stored in memory 113 and the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS differ, which is an incorrect determination due to temporary environmental changes or operation, etc.

[0131] The braking system 1 responds to the case where the count value increases by 1 by determining whether the identifier received from the pedal displacement sensor PTS in the previous time period is different from the identifier received from the pedal displacement sensor PTS in the current time period and whether the count value is greater than 1 (413).

[0132] The braking system 1 determines whether the count value is greater than 1 in order to determine whether it is the first time that the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS is different from the identifier of the pedal displacement sensor PTS stored in the memory 113.

[0133] As will be described later, this is so that if the pedal displacement sensor PTS identifier received from the pedal displacement sensor PTS is different from the pedal displacement sensor PTS identifier stored in memory 113, the braking system 1 will then perform a comparison operation between the pedal displacement sensor PTS identifier received from the pedal displacement sensor PTS via the receipt of the pedal displacement sensor PTS identifier and the identifier stored in memory 113 in the time period immediately following the current time period.

[0134] If the identifier received from the pedal displacement sensor PTS in the previous time period is different from the identifier received from the pedal displacement sensor PTS in the current time period and the count value is greater than 1, the braking system 1 performs action (415); otherwise, it performs action (417).

[0135] The braking system 1 responds to the case where the identifier received from the pedal displacement sensor PTS in the previous time period is different from the identifier received from the pedal displacement sensor PTS in the current time period and the count value is greater than 1 by determining the count value as 0 (415).

[0136] The braking system 1 responds to the above-described (413) action or the above-described (415) action by storing the identifier received from the pedal displacement sensor PTS in the current time period as the identifier (417) received from the pedal displacement sensor PTS in the previous time period.

[0137] The braking system 1 responds to the case where the count value is determined to be 0 by storing the identifier received from the pedal displacement sensor PTS in the current time period as the identifier received from the pedal displacement sensor PTS in the previous time period.

[0138] Alternatively, if the braking system 1 responds to the case that the identifier received from the pedal displacement sensor PTS in the previous time period is the same as the identifier received from the pedal displacement sensor PTS in the current time period, it will store the identifier received from the pedal displacement sensor PTS in the current time period as the identifier received from the pedal displacement sensor PTS in the previous time period.

[0139] Alternatively, braking system 1 responds to a count value of less than 1 by storing the identifier received from pedal displacement sensor PTS in the current time period as the identifier received from pedal displacement sensor PTS in a previous time period.

[0140] The braking system 1 determines whether the count value is greater than a predetermined reference count value (419) in response to the situation where the identifier received from the pedal displacement sensor PTS in the current time period is stored as the identifier received from the pedal displacement sensor PTS in a previous time period.

[0141] The braking system 1 responds to the case where the count value is greater than the predetermined reference count value by performing action (421), otherwise it performs action (423).

[0142] The braking system 1 responds to the case where the count value is greater than the predetermined reference count value by determining the identifier check of the pedal displacement sensor PTS to be completed, activating the change flag of the pedal displacement sensor PTS, and activating the identifier recording flag of the pedal displacement sensor PTS in the memory 113 (421).

[0143] Braking system 1 determines that the pedal displacement sensor PTS has been replaced based on the activation of the change flag of the pedal displacement sensor PTS.

[0144] The braking system 1 updates the identifier of the pedal displacement sensor PTS received from the pedal displacement sensor PTS in the current cycle and re-stores it in the memory 113 according to the activation of the identifier recording flag of the pedal displacement sensor PTS in the memory 113.

[0145] The braking system 1 responds to a situation where the count value is below a predetermined reference count value by determining the identifier check of the pedal displacement sensor PTS as incomplete (423).

[0146] The braking system 1 responds to the situation where the identifier of the pedal displacement sensor PTS is determined to be incomplete by re-executing the above-mentioned (403) action.

[0147] In addition, the braking system 1 responds to the above-mentioned (401) action and determines the count value to 0 before ending the operation of this embodiment.

[0148] Based on the above embodiments, the following actions can be added: when the braking system 1 determines that the pedal displacement sensor PTS has been replaced, the braking system 1 determines that a fault caused by the replacement of the pedal displacement sensor PTS has been detected.

[0149] In addition, the braking system 1 responds to the detection of a fault caused by the replacement of the pedal displacement sensor PTS by transmitting a signal indicating an error to the vehicle control device.

[0150] Alternatively, if it is determined that the pedal displacement sensor PTS has been replaced, the braking system 1 deletes the zero-point calibration value of the pedal displacement sensor PTS stored in the memory 113, and determines that a fault has been detected due to the absence of the zero-point calibration value of the pedal displacement sensor PTS.

[0151] In addition, the braking system 1 responds to the detection of a fault caused by the absence of the zero-point correction value of the pedal displacement sensor PTS by transmitting a signal indicating an error to the vehicle control device.

[0152] Based on the above embodiments, the following actions can be added: the braking system 1 responds to the determination that the pedal displacement sensor PTS has been replaced by transmitting a control signal to the vehicle control device, so that the vehicle output device outputs a notification to guide the zero-point calibration of the pedal displacement sensor PTS.

[0153] Therefore, the vehicle control unit that receives the notification from the braking system 1 outputs a notification of the zero point of the guide pedal displacement sensor PTS through the vehicle's output device, such as a display and / or speaker, so that the driver or vehicle inspector can identify the matter.

[0154] In addition, in the above embodiment, the case of comparing the identifier stored in memory 113 based on the identifier of the received pedal displacement sensor PTS has been described, but in addition to the identifier, it may also be replaced by a serial number or the like that representing the identification information of the pedal displacement sensor PTS.

[0155] In addition, in the above Figure 3 In one embodiment, if the identifier received from the pedal displacement sensor PTS is different from the identifier stored in the memory 113, the braking system 1 further verifies whether the pedal displacement sensor PTS has actually been replaced or whether the error is due to temporary environmental changes or operation, thereby further improving the reliability of determining whether the pedal displacement sensor PTS has been replaced.

[0156] The braking system 1 and the pedal displacement sensor PTS management method of the above embodiments can provide a technology for sensing and managing the replacement of the pedal displacement sensor PTS for the brake pedal 10.

[0157] In addition, the braking system 1 and the pedal displacement sensor PTS management method of the braking system 1 can provide a technique for guiding the zero-point calibration of the pedal displacement sensor PTS by replacing the pedal displacement sensor PTS used to sense the brake pedal 10.

[0158] In addition, the braking system 1 and the PTS management method of the pedal displacement sensor of the braking system 1 can eliminate the tolerance management process of the external pedal displacement sensor, thereby reducing manufacturing costs.

[0159] Furthermore, in the braking system 1 and the pedal displacement sensor PTS management method of the braking system 1, when the pedal displacement sensor PTS fails, instead of replacing the previous method of replacing the entire component including the pedal displacement sensor, only the pedal displacement sensor PTS is replaced, thereby saving maintenance costs.

[0160] Furthermore, the disclosed embodiments may be embodied in the form of a recording medium storing computer-executable commands. Commands may be stored in the form of program code, which, when executed by a processor, generates a program module to perform the actions of the disclosed embodiments. The recording medium may be a computer-readable recording medium.

[0161] Computer-readable recording media include all types of recording media that store commands that can be interpreted by a computer. Examples include read-only memory, random access memory, magnetic tape, hard disk, flash memory, and optical data storage devices.

[0162] Machine-readable storage media can be provided in the form of non-transitory storage media. Here, 'non-transitory' means a device that actually carries storage media, excluding signals (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where data is stored temporarily. For example, 'non-transitory storage media' may include buffer memory for temporarily storing data.

[0163] The disclosed embodiments have been described above with reference to the accompanying drawings. Those skilled in the art can implement the present invention in different forms than the disclosed embodiments without altering the technical concept or essential features of the invention. The disclosed embodiments are merely illustrative, and the present invention is not limited thereto.

Claims

1. A braking system comprising: A pedal displacement sensor that senses the displacement of the brake pedal; A memory that stores the identification information of the pedal displacement sensor; and The controller is electrically connected to the pedal displacement sensor and the memory. The controller receives the identification information from the pedal displacement sensor based on the vehicle's start-up. Based on the comparison between the received identification information and the stored identification information, it is determined whether the pedal displacement sensor needs to be replaced.

2. The braking system according to claim 1, wherein, If the received identification information and the stored identification information are different, the controller determines that the pedal displacement sensor has been replaced.

3. The braking system according to claim 2, wherein, If the first identification information received from the pedal displacement sensor and the stored identification information differ within the current time period, the controller increments the count value. If the increased count value is greater than the predetermined baseline count value, it is determined that the pedal displacement sensor has been replaced.

4. The braking system according to claim 3, wherein, Based on the increase in the count value, the controller compares the first identification information with the second identification information received from the pedal displacement sensor in the time period immediately preceding the current time period. Based on the case where the first identification information and the second identification information are the same, it is determined whether the increased count value is greater than the predetermined baseline count value.

5. The braking system according to claim 4, wherein, The controller sets the increased count value to 0 based on the case where the first identification information and the second identification information are different and the increased count value is greater than 1, and receives identification information from the pedal displacement sensor.

6. The braking system according to claim 2, wherein, Based on the determination that the pedal displacement sensor has been replaced, the controller stores the received identification information in the memory as the identification information of the pedal displacement sensor.

7. The braking system according to claim 2, wherein, Based on the determination that the pedal displacement sensor has been replaced, the controller transmits a control signal to the vehicle control device so that the vehicle's output device outputs a notification guiding the zero-point calibration of the pedal displacement sensor.

8. The braking system according to claim 1, wherein, If the received identification information and the identification information stored in the memory are the same, the controller determines that the pedal displacement sensor has not been replaced.

9. The braking system according to claim 1, wherein, The controller receives slow-channel data, including the identification information of the pedal displacement sensor, from the pedal displacement sensor via SENT (Single-sided half-byte transmission communication).

10. A method for managing a pedal displacement sensor in a braking system, wherein, Based on the vehicle's start-up, identification information from the pedal displacement sensor, which senses the displacement of the vehicle's brake pedal, is received. Based on the comparison between the received identification information and the identification information stored in the memory, it is determined whether the pedal displacement sensor needs to be replaced.

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