CN-121989876-A - Brake system and pedal displacement sensor management method for brake system

CN121989876ACN 121989876 ACN121989876 ACN 121989876ACN-121989876-A

Abstract

A brake system and a pedal displacement sensor management method for the brake system. The brake system includes a pedal displacement sensor that senses a displacement of a brake pedal, a memory that stores identification information of the pedal displacement sensor, and a controller that is electrically connected to the pedal displacement sensor and the memory, receives the identification information of the pedal displacement sensor from the pedal displacement sensor based on a start-up start of a vehicle, and determines whether to replace the pedal displacement sensor based on a comparison of the received identification information and the stored identification information.

Inventors

Li Zanxi

Assignees

汉拿万都株式会社

Dates

Publication Date: 20260508
Application Date: 20250116
Priority Date: 20241104

Claims (10)

1. A braking system, comprising: a pedal displacement sensor that senses a displacement of a brake pedal; a memory for storing the identification information of the pedal displacement sensor, and A controller electrically connected with the pedal displacement sensor and the memory, The controller receives identification information of the pedal displacement sensor from the pedal displacement sensor based on start-up of the vehicle, And determining whether the pedal displacement sensor is replaced or not based on the comparison of the received identification information and the stored identification information.
2. The brake system according to claim 1, wherein, The controller determines that the pedal displacement sensor is replaced in a case where the received identification information and the stored identification information are different.
3. The braking system of claim 2, wherein, In the case where the first identification information received from the pedal displacement sensor and the stored identification information are different in the current time period, the controller increases a count value, And determining that the pedal displacement sensor is replaced based on the increased count value being greater than a predetermined reference count value.
4. A brake system according to claim 3, wherein, The controller compares the first identification information with second identification information received from the pedal displacement sensor in a time period immediately before the current time period based on an increase in the count value, Based on the case where the first identification information and the second identification information are the same, it is determined whether the incremented count value is greater than the predetermined reference count value.
5. The brake system according to claim 4, wherein, The controller sets the incremented count value to 0 based on a case where the first identification information and the second identification information are different and the incremented count value is greater than 1, and receives identification information from the pedal displacement sensor.
6. The braking system of claim 2, wherein, The controller stores the received identification information in the memory as the identification information of the pedal displacement sensor based on a determination that the pedal displacement sensor is replaced.
7. The braking system of claim 2, wherein, The controller transmits a control signal to the vehicle control device to output a notification guiding zero point correction of the pedal displacement sensor by the output device of the vehicle based on a determination that the pedal displacement sensor is replaced.
8. The brake system according to claim 1, wherein, The controller determines that the pedal displacement sensor is not replaced in the case where the received identification information and the identification information stored in the memory are the same.
9. The brake system according to claim 1, wherein, The controller receives slow channel data including identification information of the pedal displacement sensor from the pedal displacement sensor through send, i.e., single-sided nibble transmission communication.
10. A pedal displacement sensor management method of a brake system, wherein, Receiving identification information of a pedal displacement sensor that senses displacement of a brake pedal of a vehicle on the basis of start-up of the vehicle, And determining whether the pedal displacement sensor is replaced or not based on the comparison of the received identification information and the identification information stored in the memory.

Description

Brake system and pedal displacement sensor management method for brake system Technical Field The disclosed invention relates to a brake system and a pedal displacement sensor management method for the brake system. Background As a means for braking and controlling the vehicle in accordance with the driver's intention to brake, a brake pedal is used, and when a displacement of the brake pedal is sensed by a pedal displacement sensor provided to the brake pedal, the signal is transmitted to a brake system, whereby the brake system can be applied to braking and controlling the vehicle. In a Brake system such as an integrated dynamic Brake (IDB; INTEGRATED DYNAMIC Brake) and an electromechanical Brake (EMB; electro-MECHANICAL BRAKE), since the amount of movement is determined based on the output signal of the pedal displacement sensor for the Brake pedal, the amount of movement is very important with respect to the zero point of the pedal displacement sensor. In particular, in the case of an external pedal displacement sensor, there may occur a mounting tolerance, and in order to remove the influence of the brake control due to the mounting tolerance, a zero point correction operation of the pedal displacement sensor is performed in a final process (EOL; end of Line) of the vehicle manufacturing. In addition, in the case where the pedal displacement sensor needs to be replaced due to a failure of the pedal displacement sensor, there is a high possibility that a large mounting tolerance may occur in the case where only the pedal displacement sensor itself is replaced in the past. Thus, in order to minimize the mounting tolerance of the pedal displacement sensor and to improve the easiness of tolerance management of the pedal displacement sensor, a manner of replacing the component on which the pedal displacement sensor is mounted is applied. In addition, when the component to which the pedal displacement sensor is attached is replaced, in principle, the inspection standard is to perform zero point correction of the pedal displacement sensor, but it cannot be confirmed at the actual maintenance site whether or not the zero point correction of the pedal displacement sensor is performed in accordance with the maintenance standard. Thus, there is a need to develop a new technique for sensing and managing the replacement of pedal displacement sensors. Disclosure of Invention One aspect of the disclosed invention provides a brake system and a pedal displacement sensor management method for the brake system that sense and manage replacement of a pedal displacement sensor for a brake pedal. One aspect of the disclosed invention provides a brake system and a pedal displacement sensor management method for a brake system that sense replacement of a pedal displacement sensor for a brake pedal and guide zero point correction of the pedal displacement sensor. One aspect of the disclosed invention provides a brake system and a pedal displacement sensor management method for a brake system that can save manufacturing costs by omitting a tolerance management step for an external pedal displacement sensor. One aspect of the disclosed invention provides a brake system and a pedal displacement sensor management method for a brake system, which can replace only a single pedal displacement sensor in place of a conventional method for replacing a component including the pedal displacement sensor when the pedal displacement sensor fails, thereby saving maintenance costs. The brake system according to one side of the disclosed invention includes a pedal displacement sensor that senses a displacement of a brake pedal, a memory that stores identification information of the pedal displacement sensor, and a controller that is electrically connected to the pedal displacement sensor and the memory, the controller receiving the identification information of the pedal displacement sensor from the pedal displacement sensor based on a start-up start of a vehicle, and determining whether to replace the pedal displacement sensor based on a comparison of the received identification information and the stored identification information. The controller determines that the pedal displacement sensor is replaced in a case where the received identification information and the stored identification information are different. The controller increases a count value in a case where first identification information received from the pedal displacement sensor and the stored identification information are different in a current time period, and determines that the pedal displacement sensor is replaced based on a case where the increased count value is greater than a predetermined reference count value. The controller compares the first identification information with second identification information received from the pedal displacement sensor in a time period immediately before the current time period based on an increase in the count value, and determines wh