KR-20260066460-A - BRAKE SYSTEM AND METHOD FOR MANAGING PEDAL TRAVEL SENSOR OF BRAKE SYSTEM

KR20260066460AKR 20260066460 AKR20260066460 AKR 20260066460AKR-20260066460-A

Abstract

A brake system comprises: a pedal displacement sensor that detects displacement of a 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. The controller receives identification information of the pedal displacement sensor from the pedal displacement sensor based on the vehicle's ignition being turned on, and can determine whether to replace the pedal displacement sensor based on a comparison of the received identification information and the stored identification information.

Inventors

이찬희

Assignees

에이치엘만도 주식회사

Dates

Publication Date: 20260512
Application Date: 20241104

Claims (20)

A pedal displacement sensor that detects displacement of the brake pedal; A memory for storing identification information of the above-mentioned pedal displacement sensor; and It includes a controller electrically connected to the above pedal displacement sensor and the above memory, and The above controller is, Based on the vehicle's ignition being turned on, identification information of the pedal displacement sensor is received from the pedal displacement sensor, and Determining whether to replace the pedal displacement sensor based on a comparison of the received identification information and the stored identification information. Brake system.
In paragraph 1, The above controller is, If the received identification information and the stored identification information are different, determining that the pedal displacement sensor has been replaced Brake system.
In paragraph 2, The above controller is, If the first identification information received from the pedal displacement sensor in the current time period and the stored identification information are different, the count value is increased, and Determining that the pedal displacement sensor has been replaced based on the fact that the above increased count value is greater than a preset reference count value, Brake system.
In paragraph 3, The above controller is, Based on the increase in the above count value, the first identification information and the second identification information received from the pedal displacement sensor during the time period immediately preceding the current time period are compared, and Determining whether the increased count value is greater than the predetermined reference count value based on the fact that the first identification information and the second identification information are identical. Brake system.
In paragraph 4, The above controller is, 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, the increased count value is set to 0, and identification information is received from the pedal displacement sensor. Brake system.
In paragraph 2, The above controller is, Based on the determination that the above pedal displacement sensor has been replaced, the received identification information is stored in the memory as the identification information of the above pedal displacement sensor. Brake system.
In paragraph 2, The above controller is, Based on the determination that the pedal displacement sensor has been replaced, a control signal is transmitted to the vehicle control device so that a notification inducing zero-point correction of the pedal displacement sensor is output to the output device of the vehicle. Brake system.
In paragraph 1, The above controller is, If the received identification information and the identification information stored in the memory are the same, determining that the pedal displacement sensor has not been replaced, Brake system.
In paragraph 1, The above controller is, Receiving identification information of the pedal displacement sensor from the pedal displacement sensor via SENT (Single Edge Nibble Transmission) communication, Brake system.
In Paragraph 9, The above controller is, Receiving slow channel data including identification information of the pedal displacement sensor from the pedal displacement sensor via the above SENT communication, Brake system.
Based on the vehicle's ignition being turned on, identification information of the pedal displacement sensor is received from a pedal displacement sensor that detects displacement of the vehicle's brake pedal; Determining whether to replace the pedal displacement sensor based on a comparison of the received identification information and the identification information stored in memory. Management method for pedal displacement sensors in a brake system.
In Paragraph 11, Determining whether to replace the above pedal displacement sensor is, Including determining that the pedal displacement sensor has been replaced when the received identification information and the stored identification information are different. Management method for pedal displacement sensors in a brake system.
In Paragraph 12, Determining whether to replace the above pedal displacement sensor is, If the first identification information received from the pedal displacement sensor in the current time period and the stored identification information are different, the count value is increased, and Determining that the pedal displacement sensor has been replaced based on the fact that the above increased count value is greater than a preset reference count value, Management method for pedal displacement sensors in a brake system.
In Paragraph 13, Determining whether to replace the above pedal displacement sensor is, Based on the increase in the above count value, the first identification information and the second identification information received from the pedal displacement sensor during the time period immediately preceding the current time period are compared, and Based on the fact that the first identification information and the second identification information are identical, the method includes determining whether the increased count value is greater than the predetermined reference count value. Management method for pedal displacement sensors in a brake system.
In Paragraph 14, Determining whether to replace the above pedal displacement sensor is, 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, the method includes setting the increased count value to 0 and receiving identification information from the pedal displacement sensor. Management method for pedal displacement sensors in a brake system.
In Paragraph 12, Based on the determination that the pedal displacement sensor has been replaced, the method further comprises storing the received identification information in the memory as the identification information of the pedal displacement sensor. Management method for pedal displacement sensors in a brake system.
In Paragraph 12, Further comprising transmitting a control signal to a vehicle control device so that, based on the determination that the pedal displacement sensor has been replaced, a notification inducing zero-point correction of the pedal displacement sensor is output to the output device of the vehicle. Management method for pedal displacement sensors in a brake system.
In Paragraph 11, Determining whether to replace the above pedal displacement sensor is, If the received identification information and the identification information stored in the memory are the same, determining that the pedal displacement sensor has not been replaced, Management method for pedal displacement sensors in a brake system.
In Paragraph 11, Receiving the identification information of the above pedal displacement sensor is, A method comprising receiving identification information of the pedal displacement sensor from the pedal displacement sensor via SENT (Single Edge Nibble Transmission) communication. Management method for pedal displacement sensors in a brake system.
In Paragraph 19, Receiving the identification information of the above pedal displacement sensor is, A method comprising receiving slow channel data including identification information of the pedal displacement sensor from the pedal displacement sensor via the above SENT communication. Management method for pedal displacement sensors in a brake system.

Description

Brake System and Method for Managing Pedal Travel Sensor of Brake System The disclosed invention relates to a brake system and a method for managing a pedal displacement sensor of a brake system. The brake pedal is a device that controls the braking of a vehicle according to the driver's intention to brake. When the displacement of the brake pedal is detected by a pedal displacement sensor installed on the brake pedal, the corresponding signal is transmitted to the brake system, which can then utilize it for braking control of the vehicle. In braking systems such as Integrated Dynamic Brake (IDB) and Electro-Mechanical Brake (EMB), the amount of braking is determined based on the output signal of a pedal displacement sensor for the brake pedal, so the displacement relative to the zero point of the pedal displacement sensor is important. In particular, in the case of external pedal displacement sensors, mounting tolerances may occur, and to eliminate the influence of mounting tolerances on braking control, zero point correction of the pedal displacement sensor is performed at the End of Line (EOL) of vehicle manufacturing. Meanwhile, when a pedal displacement sensor needs to be replaced due to failure, conventionally replacing only the sensor itself is highly likely to result in significant mounting tolerances. Accordingly, to minimize mounting tolerances and further enhance the ease of tolerance management, a method of replacing the assembly in which the pedal displacement sensor is mounted is being applied. In addition, although the maintenance manual states that the pedal displacement sensor should be zeroed in principle when replacing an assembly equipped with a pedal displacement sensor, there is no way to verify whether the pedal displacement sensor is zeroed in accordance with the maintenance manual in actual maintenance sites. Accordingly, the development of new technology to detect and manage the replacement of pedal displacement sensors is required. FIG. 1 is a block diagram showing a part of the configuration of a brake system according to one embodiment. FIG. 2 is a diagram showing the structure of a brake pedal and a pedal displacement sensor according to one embodiment. FIG. 3 is a flowchart of the operation of a brake system according to one embodiment. FIG. 4 is a flowchart of the operation of a brake system according to one embodiment. Throughout the specification, the same reference numerals refer to the same components. This specification does not describe all elements of the embodiments, and general content in the art to which the disclosed invention pertains or content that overlaps between embodiments is omitted. The terms 'part, module, component, block' used in the specification may be implemented in software or hardware, and depending on the embodiments, a plurality of 'parts, modules, components, blocks' may be implemented as a single component, or a single 'part, module, component, block' may include a plurality of components. Throughout the specification, when a part is described as being 'connected' to another part, this includes not only cases where they are directly connected but also cases where they are indirectly connected, and indirect connections include connections made via a wireless communication network. Furthermore, when it is stated that a part 'includes' a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Throughout the specification, when it is stated that a component is located 'on' another component, this includes not only cases where a component is in contact with another component, but also cases where another component exists between the two components. Terms such as "first," "second," etc., are used to distinguish one component from another, and the components are not limited by the aforementioned terms. Singular expressions include plural expressions unless there is an obvious exception in the context. In each step, identification codes are used for convenience of explanation and do not describe the order of the steps; the steps may be performed differently from the specified order unless a specific order is clearly indicated in the context. An embodiment of the disclosed invention is intended to provide a brake system for detecting and managing the replacement of a pedal displacement sensor for a brake pedal, and a method for managing a pedal displacement sensor of a brake system. In addition, the disclosed embodiment of the invention is intended to provide a brake system and a method for managing a pedal displacement sensor of a brake system that can detect the replacement of a pedal displacement sensor for a brake pedal and induce zero point correction of the pedal displacement sensor. The operating principle and embodiments of the disclosed invention will be described below with reference to the attached drawings. FIG. 1 is a block diagram showing a part o