KR101670078B1 - Method for judging error of a wheel speed sensor - Google Patents

Method for judging error of a wheel speed sensor Download PDF

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KR101670078B1
KR101670078B1 KR1020100064073A KR20100064073A KR101670078B1 KR 101670078 B1 KR101670078 B1 KR 101670078B1 KR 1020100064073 A KR1020100064073 A KR 1020100064073A KR 20100064073 A KR20100064073 A KR 20100064073A KR 101670078 B1 KR101670078 B1 KR 101670078B1
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South Korea
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wheel speed
speed sensor
vehicle
wheel
running state
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KR1020100064073A
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Korean (ko)
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KR20120003298A (en
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강창원
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현대모비스 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
    • 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
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

본 발명은 차륜속도센서의 에어갭(Air-gap) 고장을 정확히 판단하여 비정상적인 차륜속도에 의해 차량이 오작동하지 않도록 하기 위한 차륜속도센서 고장 판단 방법에 관한 것으로, 차륜속도를 검출하는 단계; 상기 차륜속도가 일정속도를 초과할 때 모든 차륜속도센서에서 속도 펄스가 입력되는지 확인하는 단계; 확인결과, 상기 속도 펄스의 입력이 없는 차륜속도센서가 존재하면 차량이 주행상태인지를 판단하는 단계; 및 상기 차량이 주행상태이면 차륜속도센서를 고장으로 판단하는 단계를 포함하는 것을 특징으로 한다.The present invention relates to a wheel speed sensor failure determination method for accurately determining an air gap failure of a wheel speed sensor so as to prevent a vehicle from malfunctioning due to an abnormal wheel speed, the method comprising: detecting a wheel speed; Confirming that a speed pulse is input at all wheel speed sensors when the wheel speed exceeds a constant speed; Determining whether a vehicle is in a running state if a wheel speed sensor without input of the speed pulse exists; And determining that the wheel speed sensor is malfunctioning if the vehicle is in a running state.

Description

차륜속도센서 고장 판단 방법{METHOD FOR JUDGING ERROR OF A WHEEL SPEED SENSOR}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wheel speed sensor,

본 발명은 차륜속도센서 고장 판단 방법에 관한 것으로, 더 상세하게는 차륜속도센서의 에어갭(Air-gap) 고장을 정확히 판단하여 비정상적인 차륜속도에 의해 차량이 오작동하지 않도록 하기 위한 차륜속도센서 고장 판단 방법에 관한 것이다.
The present invention relates to a wheel speed sensor failure determination method, and more particularly, to a wheel speed sensor failure judgment method for accurately determining a failure of an air gap of a wheel speed sensor to prevent a malfunction of the vehicle due to an abnormal wheel speed ≪ / RTI >

일반적으로, 차량에는 안정된 브레이크 성능을 확보하기 위한 ABS 시스템(Anti-lock Brake System)과, 구동륜의 과도한 슬립을 억제하여 자동차의 방향 안전성과 구동력을 확보하기 위한 TCS 시스템(Traction Control System)이 마련되어 있다.Generally, there are provided an ABS system (Anti-lock Brake System) for ensuring stable brake performance and a TCS system (Traction Control System) for securing direction safety and driving force of the vehicle by suppressing excessive slip of the drive wheels .

이러한 제어시스템에서는 차륜속도센서로부터 검출된 차륜속도를 기본정보로 하여 차량을 제어하기 때문에 차륜속도센서의 불량여부를 정확히 판단하는 것이 중요하다.In such a control system, it is important to accurately determine whether or not the wheel speed sensor is defective because the vehicle is controlled based on the wheel speed detected from the wheel speed sensor as basic information.

상기한 기술구성은 본 발명의 이해를 돕기 위한 배경기술로서, 본 발명이 속하는 기술분야에서 널리 알려진 종래기술을 의미하는 것은 아니다.
The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

본 발명은 차륜속도센서의 에어갭 고장을 정확히 판단하여 비정상적인 차륜속도에 의해 차량이 오작동하지 않도록 하기 위한 차륜속도 고장 판단 방법을 제공하는데 그 목적이 있다.
An object of the present invention is to provide a wheel speed failure determination method for accurately determining an air gap failure of a wheel speed sensor so as to prevent a vehicle from malfunctioning due to an abnormal wheel speed.

본 발명에 의한 차륜속도센서 고장 판단 방법은 차륜속도를 검출하는 단계; 상기 차륜속도가 일정속도를 초과할 때 모든 차륜속도센서에서 속도 펄스가 입력되는지 확인하는 단계; 확인결과, 상기 속도 펄스의 입력이 없는 차륜속도센서가 존재하면 차량이 주행상태인지를 판단하는 단계; 및 상기 차량이 주행상태이면 차륜속도센서를 고장으로 판단하는 단계를 포함하는 것을 특징으로 한다.A wheel speed sensor failure determination method according to the present invention includes: detecting a wheel speed; Confirming that a speed pulse is input at all wheel speed sensors when the wheel speed exceeds a constant speed; Determining whether the vehicle is in a running state if a wheel speed sensor without input of the speed pulse exists; And determining that the wheel speed sensor is malfunctioning if the vehicle is in a running state.

본 발명에서, 상기 차량이 주행상태인지를 판단하는 단계는 변속기 ECU와 CAN 통신하여 차량의 주행상태를 입력받는 단계를 포함하는 것을 특징으로 한다.
In the present invention, the step of determining whether the vehicle is in a running state includes a step of receiving a running state of the vehicle through CAN communication with the transmission ECU.

상술한 바와 같이, 본 발명은 차륜속도센서의 에어갭 고장을 정확히 판단하여 비정상적인 차륜속도에 의해 차량이 오작동하지 않도록 지원한다.
INDUSTRIAL APPLICABILITY As described above, the present invention accurately determines an air gap failure of a wheel speed sensor, thereby preventing a vehicle from malfunctioning due to an abnormal wheel speed.

도 1은 본 발명의 일 실시예에 따른 차륜속도센서 고장 판단 장치의 구성을 설명하기 위한 블럭도이다.
도 2는 본 발명의 일 실시예에 따른 차륜속도센서를 설명하기 위한 도면이다.
도 3은 본 발명의 일 실시예에 따른 차륜속도센서 고장 판단 방법을 설명하기 위한 순서도이다.1 is a block diagram for explaining a configuration of a wheel speed sensor failure determination device according to an embodiment of the present invention.
2 is a view for explaining a wheel speed sensor according to an embodiment of the present invention.
3 is a flowchart for explaining a method of determining a wheel speed sensor failure according to an embodiment of the present invention.

이하, 실시예를 통하여 본 발명을 더욱 상세히 설명하기로 한다. 이들 실시예는 단지 본 발명을 예시하기 위한 것이며, 본 발명의 권리 보호 범위가 이들 실시예에 의해 제한되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples. These embodiments are only for illustrating the present invention, and the scope of rights of the present invention is not limited by these embodiments.

이 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

도 1은 본 발명의 일 실시예에 따른 차륜속도센서 고장 판단 장치의 구성을 설명하기 위한 블럭도이고, 도 2는 본 발명의 일 실시예에 따른 차륜속도센서를 설명하기 위한 도면이다.FIG. 1 is a block diagram for explaining a configuration of a wheel speed sensor failure determination device according to an embodiment of the present invention, and FIG. 2 is a view for explaining a wheel speed sensor according to an embodiment of the present invention.

본 발명은 차륜속도센서(1)의 에어갭이 외부로부터 가해지는 어떤 힘에 의해 변화하면 비정상적인 차륜속도가 출력되므로 이러한 에어갭 고장을 정확히 판단할 수 있는 방법을 제공한다.The present invention provides a method for accurately determining an air gap failure because an abnormal wheel speed is output when the air gap of the wheel speed sensor 1 is changed by a certain force externally applied.

도 1과 도 2를 참고하면, 본 발명의 일 실시예에 따른 차륜속도센서 고장 판단 장치는 차륜속도센서(1)와 ABS 시스템(2)과 변속기 ECU(3)를 포함한다.Referring to FIGS. 1 and 2, a wheel speed sensor failure determination device according to an embodiment of the present invention includes a wheel speed sensor 1, an ABS system 2, and a transmission ECU 3.

차륜속도센서(1)는 차륜과 일체로 구성되어 회전하는 톤휠(11)과 에어갭(Air-gap)을 갖도록 조립된다.The wheel speed sensor 1 is assembled so as to have an air gap with the ton wheel 11, which is integrally formed with the wheel and rotates.

이러한 차륜속도센서(1)는 톤힐(11)이 회전시 일어나는 자계변화를 속도 펄스로 변환하여 차륜속도를 검출한다.This wheel speed sensor 1 detects the wheel speed by converting the magnetic field change that occurs when the tone hill 11 rotates into a speed pulse.

ABS 시스템(2)은 차량에 안정된 브레이크 성능을 확보하기 위한 시스템으로, 차륜속도센서(1)로부터 검출되는 차륜속도와 변속기 ECU(3)로부터 제공받는 차량의 주행상태를 이용하여 차륜속도센서의 에어갭 고장을 판단한다. The ABS system 2 is a system for ensuring stable braking performance in the vehicle. The ABS system 2 is a system for estimating the braking performance of the vehicle based on the wheel speed detected from the wheel speed sensor 1 and the running state of the vehicle supplied from the transmission ECU 3 Gap failure is judged.

이러한 에어갭 고장을 판단하는 구체적인 방법은 도 3을 참고로 하여 아래에 상세히 설명한다.A specific method of determining such an air gap failure will be described in detail below with reference to Fig.

변속기 ECU(3)는 차량의 변속기를 제어하는 장치로, ABS 시스템(2)과 CAN 통신을 통해 차량의 주행상태를 알려준다.The transmission ECU 3 is a device for controlling the transmission of the vehicle and informs the running state of the vehicle through the CAN communication with the ABS system 2. [

도 3은 본 발명의 일 실시예에 따른 차륜속도센서 고장 판단 방법을 설명하기 위한 순서도이다. 도 3을 참고하여, 본 발명의 일 실시예에 따른 차륜속도센서 고장 판단 방법을 설명하면 다음과 같다.3 is a flowchart for explaining a method of determining a wheel speed sensor failure according to an embodiment of the present invention. Referring to FIG. 3, a method of determining a failure of a wheel speed sensor according to an embodiment of the present invention will now be described.

먼저, 차량의 차륜에 설치된 차륜속도센서(1)를 통해 속도 펄스를 입력받아 차륜속도를 검출한다(S1).First, a speed pulse is received through a wheel speed sensor 1 provided on a wheel of the vehicle, and the wheel speed is detected (S1).

차륜속도 연산은 피구동륜의 평균속도를 이용하여 계산한다. 예를 들어, 전륜구동의 경우 후륜의 평균속도를 이용하여 차륜속도를 계산하고, 후륜구동의 경우 전륜의 평균속도를 이용하여 차륜속도를 계산한다.The wheel speed calculation is performed using the average speed of the driven wheel. For example, in the case of all-wheel drive, the wheel speed is calculated using the average speed of the rear wheels, and in the case of the rear-wheel drive, the wheel speed is calculated using the average speed of the front wheels.

이어서, 계산한 차륜속도가 일정속도를 초과할 때(S2) 속도 펄스의 입력이 없는 차륜이 존재하는지 확인한다(S3).Then, when the calculated wheel speed exceeds a predetermined speed (S2), it is checked whether there is a wheel without input of the speed pulse (S3).

이때, 속도 펄스의 입력이 없는 차륜이 존재하면 임계시간이 경과하였는지 확인한다(S4).At this time, if there is a wheel without input of a speed pulse, it is checked whether a critical time has elapsed (S4).

임계시간이 경과할 때까지 속도 펄스의 입력이 없으면 변속기 ECU(3)와 CAN 통신하여 차량이 주행상태인지를 확인한다(S5).If there is no input of the speed pulse until the critical time has elapsed, it is checked whether the vehicle is in the running state by communicating with the transmission ECU 3 (S5).

차량이 주행상태로 확인되면 차륜속도센서를 고장으로 판단한다(S6).If it is determined that the vehicle is in the running state, it is determined that the wheel speed sensor is faulty (S6).

정리하면, 차륜의 속도 펄스가 임계시간이 경과할 때까지 입력되지 않는 차륜속도센서가 존재하면 변속기 ECU(3)와 CAN 통신을 실시하여 차량이 주행상태인지를 감시하여, 차량이 주행상태인 경우 차륜속도센서를 에어갭 고장으로 판단하고, 차량이 주행상태가 아닌 경우에는 차륜속도센서를 에어갭 고장으로 처리하지 않는다.In summary, if there is a wheel speed sensor that is not input until the speed pulse of the wheel has passed the threshold time, the vehicle is monitored for the driving state by performing CAN communication with the transmission ECU 3, It is determined that the wheel speed sensor is an air gap failure, and when the vehicle is not in the running state, the wheel speed sensor is not treated as an air gap failure.

따라서, 차량이 리프트에 올려져 있거나, 눈길이나 진흙에 빠져서 차가 전진하지 못하는 경우와, 정상 주행인데 차륜속도센서가 에어갭 고장이 발생하여 속도 펄스가 안 들어오는 고장상황과 구분할 수 있다.Therefore, it is possible to distinguish a case where the vehicle is lifted up on a lift, a case where the vehicle can not advance due to snow or mud, and a failure situation in which the wheel speed sensor does not have a speed pulse due to an air gap failure.

이와 같이, 본 발명은 차륜속도센서의 에어갭 고장을 정확히 판단하여 비정상적인 차륜속도에 의해 차량이 오작동하지 않도록 지원한다.As described above, the present invention accurately determines the air gap failure of the wheel speed sensor, thereby preventing the vehicle from malfunctioning due to an abnormal wheel speed.

상술한 바와 같이 본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

1 : 차륜속도센서 2 : ABS 시스템
3 : 변속기 ECU 11 : 톤휠1: Wheel speed sensor 2: ABS system
3: Transmission ECU 11: Toner Wheel

Claims (2)

차륜속도센서가 차륜속도를 검출하는 단계;
상기 차륜속도가 일정속도를 초과할 때, ABS 시스템이 모든 차륜속도센서에서 속도 펄스가 입력되는지 확인하는 단계;
상기 속도 펄스의 입력이 없는 차륜속도센서가 존재하면, 변속기 ECU가 차량이 주행상태인지를 판단하는 단계;
상기 ABS 시스템이 상기 변속기 ECU로부터 상기 차량의 주행상태를 입력받는 단계; 및
상기 차량이 주행상태이면 상기 속도 펄스의 입력이 없는 차륜속도센서를 고장으로 판단하는 단계를 포함하되,
상기 차량의 주행상태를 입력받는 단계는
상기 변속기 ECU와 CAN 통신하여 상기 차량의 주행상태를 입력받는 단계를 포함하는 것을 특징으로 하는 차륜속도센서 고장 판단 방법.



The wheel speed sensor detecting a wheel speed;
Confirming that the ABS system is inputting a speed pulse at all wheel speed sensors when the wheel speed exceeds a constant speed;
Determining whether the transmission ECU is in a running state if the vehicle speed sensor is not provided with the input of the speed pulse;
The ABS system receiving the driving state of the vehicle from the transmission ECU; And
If the vehicle is in a running state, determining that the wheel speed sensor without input of the speed pulse is a failure,
The step of receiving the running state of the vehicle
And receiving a running state of the vehicle through CAN communication with the transmission ECU.



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KR1020100064073A 2010-07-02 2010-07-02 Method for judging error of a wheel speed sensor KR101670078B1 (en)

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CN111351963A (en) * 2018-12-20 2020-06-30 陆博汽车电子（曲阜）有限公司 Position adjusting method and device of wheel speed sensor and testing equipment thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001272411A (en) * 2000-03-28 2001-10-05 Honda Motor Co Ltd Failure-judging device of wheel speed sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001272411A (en) * 2000-03-28 2001-10-05 Honda Motor Co Ltd Failure-judging device of wheel speed sensor

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