KR20100047405A - Method for inspection contact defect of operating switch of electric parking brake system - Google Patents

Method for inspection contact defect of operating switch of electric parking brake system Download PDF

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Publication number
KR20100047405A
KR20100047405A KR1020080106275A KR20080106275A KR20100047405A KR 20100047405 A KR20100047405 A KR 20100047405A KR 1020080106275 A KR1020080106275 A KR 1020080106275A KR 20080106275 A KR20080106275 A KR 20080106275A KR 20100047405 A KR20100047405 A KR 20100047405A
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South Korea
Prior art keywords
parking brake
brake system
operation switch
signal
operating switch
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KR1020080106275A
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Korean (ko)
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KR101315062B1 (en
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박용제
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주식회사 만도
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/03—Brake assistants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/10—Automatic or semi-automatic parking aid systems

Abstract

PURPOSE: A method for inspection a contact defect of an operating switch of an electric parking brake system is provided to operate that a contact defect of an operating switch is decided by an unstable signal from an inputted signal for a plurality of set times. CONSTITUTION: A method for inspection a contact defect of an operating switch of an electric parking brake system comprises the following steps. If an operating switch receives an ON-signal, signal is filtered during a first set time(110). The operating switch receives an unstable signal during a second set time(120). If unstable signal is inputted during a third set time by inspecting additional signal is decided(130). The operating switch is decided as a contact defect(140).

Description

전자식 주차 브레이크 시스템의 작동 스위치의 접촉 불량 검출방법{METHOD FOR INSPECTION CONTACT DEFECT OF OPERATING SWITCH OF ELECTRIC PARKING BRAKE SYSTEM}Method of detecting poor contact of the operation switch of the electronic parking brake system {METHOD FOR INSPECTION CONTACT DEFECT OF OPERATING SWITCH OF ELECTRIC PARKING BRAKE SYSTEM}

본 발명은 전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법에 관한 것으로, 보다 상세하게는 전자식 주차 브레이크 시스템에 있는 작동 스위치의 접촉 불량을 검출하는 전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법에 관한 것이다.The present invention relates to a contact failure detection method of an electronic parking brake system operation switch, and more particularly, to a contact failure detection method of an electronic parking brake system operation switch for detecting a contact failure of an operation switch in an electronic parking brake system. .

전자식 주차 브레이크 시스템(Electric parking brake system : 이하 EPB 라고 함)은 간단한 스위치 조작을 통해 자동으로 주차 브레이크를 작동 및 해제시키는 시스템으로서 비상 제동과 엔진 정지 시 주차 브레이크 자동체결 및 경사로에서의 밀림방지 등 여러 기능을 제공하여 운전자에게 편의성과 안정성을 주는 시스템이다.Electric parking brake system (EPB) is a system that automatically activates and releases the parking brake by simple switch operation. It is a system that provides the driver with convenience and stability.

이러한 전자식 주차 브레이크 시스템은 주차 케이블을 이완시키거나 당기는 구동모터, 구동모터가 정회전 또는 역회전되도록 제어하는 전자제어유닛 및 전자제어유닛에 운전자에 의한 구동명령이 입력되도록 하는 작동 스위치를 포함한다.The electronic parking brake system includes a drive motor for relaxing or pulling the parking cable, an electronic control unit for controlling the driving motor to rotate forward or reverse, and an operation switch for inputting a driving command by the driver to the electronic control unit.

그러나, 종래의 작동 스위치는 작동 스위치가 접촉 불량 되는 등의 고장 검출을 위한 구성이 없으므로 작동 스위치가 접촉 불량 되면, 전자제어유닛이 작동되지 못하여 전자식 주차 브레이크 시스템이 제대로 동작되지 못하는 문제점이 있었다. However, the conventional operation switch has no configuration for detecting a failure such as the operation switch is poor contact, so if the operation switch is poor contact, the electronic control unit does not operate, there was a problem that the electronic parking brake system does not operate properly.

따라서, 본 발명의 상술한 문제점을 해결하기 위하여 창안된 것으로, 작동 스위치의 접촉 불량을 빠르게 검출하여 전자식 주차 브레이크 시스템의 신뢰성을 확보할 수 있는 전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법을 제공하는데 그 목적이 있다.Accordingly, to solve the above-described problems of the present invention, to provide a method for detecting a poor contact of the electronic parking brake system operation switch that can quickly detect the contact failure of the operation switch to ensure the reliability of the electronic parking brake system. The purpose is.

상기와 같은 목적을 달성하기 위한 본 발명은 전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법에 있어서, 작동 스위치에서 온 신호가 입력되면, 초기 제1 설정시간 동안 신호를 필터링하고, 제2 설정시간 동안 비 안정적인 신호가 입력되면, 제3 설정시간 동안 추가로 신호를 검사하여 비 안정적인 신호가 입력되면, 작동 스위치의 접촉 불량으로 판단한다.In order to achieve the above object, the present invention provides a method for detecting contact failure of an electronic parking brake system operation switch, when an ON signal is input, the signal is filtered during an initial first setting time, and during a second setting time. When the non-stable signal is input, the signal is additionally inspected for the third set time, and when the non-stable signal is input, it is determined that the contact of the operation switch is poor.

이때, 작동 스위치의 접촉 불량은 전자식 주차 브레이크 시스템이 온 또는 오프할 때마다 검출하는 것을 특징으로 한다.In this case, the contact failure of the operation switch is characterized in that it detects each time the electronic parking brake system on or off.

또한, 작동 스위치의 접촉 불량은 소정의 전압 범위에 이르면 검출하는 것을 특징으로 한다.In addition, the contact failure of the operation switch is characterized in that it detects when a predetermined voltage range is reached.

상술한 바와 같이 본 발명의 전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법에 따르면, 작동 스위치의 접촉 불량을 빠르게 검출할 수 있게 되어 전자식 주차 브레이크 시스템의 신뢰성을 확보할 수 있는 장점이 있다.As described above, according to the contact failure detection method of the electronic parking brake system operation switch of the present invention, it is possible to quickly detect the contact failure of the operation switch has the advantage of ensuring the reliability of the electronic parking brake system.

도 1은 본 발명의 일실시예에 의한 전자식 주차 브레이크 시스템의 제어 구성도로서, 도 1에 도시된 바와 같이, 차량에는 운전자가 수동으로 주차 브레이크를 작동시키지 않더라도 차량이 정차한 경우나 언덕 출발 시에 차량이 뒤로 밀릴 우려가 있는 경우, 자동으로 작동하여 차의 주차 상태 또는 정차 상태를 유지시키기 위하여 전자식 주차 브레이크 시스템이 장착된다.1 is a control configuration diagram of an electronic parking brake system according to an embodiment of the present invention. As shown in FIG. 1, a vehicle is stopped or a hill starts when a driver does not manually operate a parking brake. If there is a risk of the vehicle being pushed back, the electronic parking brake system is equipped to operate automatically to maintain the parking or stopping of the car.

전자식 주차 브레이크 시스템은 작동 스위치(10)와, 이 작동 스위치(10)의 작동신호에 따라 전반적인 전자식 주차 브레이크 제어를 수행하는 EPB ECU(Electric Control Unit)(20)와, 후륜 좌우 바퀴(RL,RR)에 각각 주차를 위한 외력을 작용하는 주차 브레이크(30)와, EPB ECU(20)의 제어신호에 따라 구동하여 주차 브레이크(30)를 구속시켜 바퀴의 회전을 구속시키는 엑츄에이터(40)를 구비한다.The electronic parking brake system includes an actuation switch 10, an EPB ECU (Electric Control Unit) 20 which performs overall electronic parking brake control according to the actuation signal of the actuation switch 10, and rear wheel left and right wheels (RL, RR). Parking brake 30 that acts as an external force for parking, respectively, and an actuator 40 which drives the brake according to the control signal of the EPB ECU 20 to restrain the parking brake 30 to restrain the rotation of the wheel. .

작동 스위치(10)는 운전자에 의해 온 또는 오프되어 주차 브레이크(30)의 구속상태를 해제(Release)시키기 위한 명령 또는 주차 브레이크(30)를 구속(Apply)시키기 위한 명령을 EPB ECU(20)에 전달한다.The operation switch 10 is turned on or off by the driver to give the EPB ECU 20 a command for releasing the restraint of the parking brake 30 or a command for applying the parking brake 30 to the vehicle. To pass.

주차 브레이크(30)는 액츄에이터(40)와 일단이 연결되어 좌우 후륜바퀴(Wrl, Wrr)에 외력을 전달하는 주차 브레이크 케이블(31)과, 이 주차 케이블(31)에 연결된 주차 브레이크 부속장치(32)로 이루어진다. 이 주차 브레이크 부속장치(32)는 주차 케이블(31)의 타단에 연결되어 패드가 부착된 브레이크슈와, 이 브레이크슈를 드럼에 압착시켜서 제동력을 발생시키는 브레이크슈 레버를 구비한다.The parking brake 30 has a parking brake cable 31 having one end connected to the actuator 40 to transmit external force to the left and right rear wheels Wrl and Wrr, and a parking brake accessory 32 connected to the parking cable 31. ) The parking brake accessory 32 has a brake shoe connected to the other end of the parking cable 31 and a padded shoe and a brake shoe lever for pressing the brake shoe onto the drum to generate a braking force.

액츄에이터(40)는 전동식으로 주차 브레이크(30)를 작동시켜 주차 브레이크 케이블(31)을 당기거나 밀어 주차 브레이크 부속장치(32)를 작동시켜 브레이크슈를 드럼에 압착시키거나 압착 해제시켜 주차 브레이크(30)를 구속시키거나 구속 해제시킨다.The actuator 40 electrically operates the parking brake 30 to pull or push the parking brake cable 31 to operate the parking brake accessory 32 to compress or depress the brake shoe to the drum to release the parking brake 30. Constrain or unconstrain

EPB ECU(20)는 작동 스위치(10)가 온 되면, 주차 브레이크(30)의 구속 상태를 해제시키기 위한 명령으로 인식하여 액츄에이터(40)를 구동하여 주차 케이블(31)을 밀어주어 브레이크슈를 드럼에 압착 해제시킴으로써 주차 브레이크(30)의 구속을 해제시킨다. When the operation switch 10 is turned on, the EPB ECU 20 recognizes the command as releasing the restrained state of the parking brake 30, drives the actuator 40 to push the parking cable 31 to drum the brake shoe. Release of the parking brake 30 by squeezing the pressure.

또한, EPB ECU(20)는 작동 스위치(10)가 오프되면, 주차 브레이크(30)를 구속시키기 위한 명령으로 인식하여 액츄에이터(40)를 구동하여 주차 브레이크 케이블(31)을 당김으로써 브레이크슈를 드럼에 재압착시켜 주차 브레이크(30)를 다시 구속시킨다.In addition, when the operation switch 10 is turned off, the EPB ECU 20 recognizes the command to restrain the parking brake 30 and drives the actuator 40 to pull the parking brake cable 31 to drum the brake shoe. Re-compress to the parking brake 30 again.

도 2는 본 발명의 일실시예에 의한 전자식 주차 브레이크 시스템 작동 스위치의 불량 접촉을 검출과정을 설명하기 위한 동작흐름도, 도 3은 작동 스위치가 정상상태일 때의 동작패턴을 보여주는 그래프 및 도 4는 작동 스위치가 접촉 불량일 때의 동작패턴을 보여주는 그래프를 나타낸다.FIG. 2 is a flowchart illustrating a process of detecting a bad contact of an electronic parking brake system operation switch according to an embodiment of the present invention. FIG. 3 is a graph showing an operation pattern when the operation switch is in a normal state. The graph shows the operation pattern when the operation switch is in poor contact.

도 2 내지 도 4를 참조하여 설명하면, 우선적으로 전자식 주차 브레이크 시스템의 작동 스위치(10)의 불량 접촉을 검출하는 동작은 전자식 주차 브레이크 시스템이 온 또는 오프 될 때마다 검출하는 동작을 수행하며 또는 소정의 전압 범위 즉, 8V~18.5V에서만 검출동작을 수행한다.Referring to FIG. 2 to FIG. 4, the operation of detecting a bad contact of the operation switch 10 of the electronic parking brake system preferentially performs an operation of detecting each time the electronic parking brake system is turned on or off. The detection operation is performed only in the voltage range of 8V to 18.5V.

다만, 작동 스위치(10)에서 단선 및 단락 등의 에러가 발생할 경우에는 제외하도록 한다.However, if an error such as disconnection or short circuit occurs in the operation switch 10, it shall be excluded.

본격적으로 작동 스위치(10)의 불량 접촉 검출과정을 설명하면, 작동 스위치(10)에서 온(ON) 또는 오프(OFF) 신호가 입력되는지 판단(100)하여 작동 스위치(10)에서 온(ON) 또는 오프(OFF) 신호가 입력되면, 초기 제1 설정시간 동안 신호를 필터링(Filtering)한다(110). Referring to the process of detecting the bad contact of the operation switch 10 in earnest, it is determined whether the ON (OFF) signal is input from the operation switch 10 (100) by turning on (ON) in the operation switch 10 Alternatively, when the OFF signal is input, the signal is filtered during the initial first set time (110).

즉, 작동 스위치(10)에서 온(ON) 또는 오프(OFF) 신호가 입력되면, 초기 제1 설정시간 동안에 들어오는 신호는 고려하지 않는데, 이때 초기 제1 설정시간은 작동 스위치(10)의 사양(전압 또는 온도별)에 따라 변경될 수 있다. That is, when the ON or OFF signal is input from the operation switch 10, the signal coming in during the initial first setting time is not taken into account, wherein the initial first setting time is the specification of the operation switch 10 ( Voltage or temperature).

다음으로, 제2 설정시간 동안 비 안정적인 신호가 입력되는지 판단한다(120). 이때 제2 설정시간 동안 비 안정적인 신호가 입력되는지 판단하는 것은 제2 설정시간 동안 안정적이고 오류가 없는 신호가 유지되는지 판단하는 것을 말한다.Next, it is determined whether an unstable signal is input during the second set time (120). In this case, determining whether an unstable signal is input during the second setting time refers to determining whether a stable and error-free signal is maintained during the second setting time.

만약, 제2 설정시간 동안 비 안정적인 신호가 입력되면, 제3 설정시간 동안 신호를 추가로 검사한다.If an unstable signal is input during the second set time, the signal is additionally checked during the third set time.

다시 말하면, 제3 설정시간 동안 신호를 모니터링하는데 즉, 제3 설정시간 동안 비 안정적인 신호가 입력되는지 판단(130)하여 제3 설정시간 동안 비 안정적인 신호가 입력되면, 작동 스위치(10)를 접촉 불량으로 판단한다(140).In other words, when the signal is monitored for the third set time, that is, whether the unstable signal is input for the third set time (130) and the unstable signal is input for the third set time, the operation switch 10 is not contacted. Determine (140).

만약, 120단계에서 제2 설정시간 동안 안정적인 신호가 입력되거나 130단계에서 제3 설정시간 동안 안정적인 신호가 입력되면, 작동 스위치(10)를 정상으로 판단한다(150).If the stable signal is input for the second set time in step 120 or the stable signal is input for the third set time in step 130, the operation switch 10 is determined to be normal (150).

도 1은 본 발명의 일실시예에 의한 전자식 주차 브레이크 시스템의 제어 구성도이다.1 is a control block diagram of an electronic parking brake system according to an embodiment of the present invention.

도 2는 본 발명의 일실시예에 의한 전자식 주차 브레이크 시스템 작동 스위치의 불량 접촉을 검출과정을 설명하기 위한 동작흐름도이다.2 is a flowchart illustrating a process of detecting a bad contact of the electronic parking brake system operation switch according to an embodiment of the present invention.

도 3은 작동 스위치가 정상상태일 때의 동작패턴을 보여주는 그래프이다.3 is a graph showing an operation pattern when the operation switch is in a normal state.

도 4는 작동 스위치가 접촉 불량일 때의 동작패턴을 보여주는 그래프이다.4 is a graph showing an operation pattern when the operation switch is in poor contact.

＊도면의 주요부분에 대한 부호 설명＊＊ Explanation of symbols on the main parts of the drawings ＊

10...작동 스위치 20...EPB ECU10 ... operating switch 20 ... EPB ECU

30...주차 브레이크 40...엑츄에이터30. Parking brake 40 ... Actuator

Claims (3)

전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법에 있어서,In the contact failure detection method of the electronic parking brake system operation switch, 상기 작동 스위치에서 온 신호가 입력되면, 초기 제1 설정시간 동안 신호를 필터링하고,When the signal from the operation switch is input, the signal is filtered for an initial first set time, 제2 설정시간 동안 비 안정적인 신호가 입력되면, 제3 설정시간 동안 추가로 신호를 검사하여 비 안정적인 신호가 입력되면, 상기 작동 스위치의 접촉 불량으로 판단하는 전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법. When the non-stable signal is input for the second set time, and further checks the signal for the third set time, if the non-stable signal is input, the contact failure detection method of the electronic parking brake system operating switch to determine that the contact switch of the operation switch is bad. . 제 1 항에 있어서, The method of claim 1, 상기 작동 스위치의 접촉 불량은 상기 전자식 주차 브레이크 시스템을 온 또는 오프할 때마다 검출하는 전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법. The contact failure detection method of the electronic parking brake system operation switch detects that the contact failure of the operation switch is detected every time the electronic parking brake system is turned on or off. 제 1 항에 있어서, The method of claim 1, 상기 작동 스위치의 접촉 불량은 소정의 전압 범위에 이르면 검출하는 전자식 주차 브레이크 시스템 작동 스위치의 접촉 불량 검출방법. The contact failure detection method of the electronic parking brake system operation switch detects that the contact failure of the operation switch reaches a predetermined voltage range.
KR1020080106275A 2008-10-29 2008-10-29 Method for inspection contact defect of operating switch of electric parking brake system KR101315062B1 (en)

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Publication number Priority date Publication date Assignee Title
KR101714241B1 (en) * 2015-10-22 2017-03-22 현대자동차주식회사 Apparatus for controlling electric parking brake and method thereof

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KR100720276B1 (en) * 2005-12-27 2007-05-22 지멘스 오토모티브 주식회사 Method for detecting error of a brake switch in automobile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101714241B1 (en) * 2015-10-22 2017-03-22 현대자동차주식회사 Apparatus for controlling electric parking brake and method thereof
US9789857B2 (en) 2015-10-22 2017-10-17 Hyundai Motor Company Apparatus and method of controlling electronic parking brake

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