KR200178109Y1 - Device for preventing misjudgement of sensor error - Google Patents

Device for preventing misjudgement of sensor error Download PDF

Info

Publication number
KR200178109Y1
KR200178109Y1 KR2019950039318U KR19950039318U KR200178109Y1 KR 200178109 Y1 KR200178109 Y1 KR 200178109Y1 KR 2019950039318 U KR2019950039318 U KR 2019950039318U KR 19950039318 U KR19950039318 U KR 19950039318U KR 200178109 Y1 KR200178109 Y1 KR 200178109Y1
Authority
KR
South Korea
Prior art keywords
engine
sensor
potential difference
vehicle body
ground
Prior art date
Application number
KR2019950039318U
Other languages
Korean (ko)
Other versions
KR970034823U (en
Inventor
김남종
Original Assignee
정몽규
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 정몽규, 현대자동차주식회사 filed Critical 정몽규
Priority to KR2019950039318U priority Critical patent/KR200178109Y1/en
Publication of KR970034823U publication Critical patent/KR970034823U/en
Application granted granted Critical
Publication of KR200178109Y1 publication Critical patent/KR200178109Y1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B60W2050/0215—Sensor drifts or sensor failures

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Transportation (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

이 고안은 센서 고장 오판 방지 장치에 관한 것으로서, 전자 제어 장치의 접지가 차체인 경우에, 엔진의 접지 신호를 디지탈 신호로 변환시켜 엔진과 차체간의 접지 전위차 값을 출력하는 A/D 변환기(1)와; 상기 A/D 변환기(2)에서 출력되는 디지탈 신호인 엔진과 차체간의 접지 전위차 값을 오프셋 값으로 적용하여, 센서의 고장을 판단하는 마이크로 프로세서(2)로 구성되어, 센서 고장을 판단할 때 엔진의 접시 신호를 디지탈 신호로 변환시켜, 그 차이 만큼의 전위차 값을 오프셋 값으로 적용하여 센서 고장의 오판 가능성을 줄이는 센서 고장 오판 방지 장치에 관한 것이다.The present invention relates to a device for preventing a sensor malfunction error, wherein an A / D converter (1) converting an engine ground signal into a digital signal and outputting a ground potential difference value between the engine and the vehicle body when the ground of the electronic controller is a vehicle body (1) Wow; It is composed of a microprocessor (2) to determine the failure of the sensor by applying the ground potential difference value between the engine and the vehicle body, which is a digital signal output from the A / D converter (2) as an offset value, the engine when determining the sensor failure The present invention relates to a sensor failure misjudgment prevention device which converts a dish signal of a digital signal into a digital signal, and applies a potential difference value corresponding to the difference as an offset value to reduce the possibility of misjudgment of a sensor failure.

Description

센서 고장 오판 방지 장치Sensor failure miscalculation device

제1도는 이 고안의 실시예에 따른 센서 고장 오판 방지 장치의 구성도이다.1 is a block diagram of a device for preventing a malfunction of a sensor malfunction according to an embodiment of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : A/D 변환기 2 : 마이크로 프로세서1: A / D converter 2: Microprocessor

이 고안은 센서 고장(Sensor Fail) 오판 방지 장치에 관한 것으로서, 더욱 상세하게 말하자면 엔진(Engine)과 차체(Body)간에 접지(GND) 전위차 발생시 센서 고장을 판단할 때, 엔진과 차체간의 접지 전위차를 오프셋(Offset) 값으로 적용하여 센서의 고장을 오판할 수 있는 가능성을 줄이는 센서 고장 오판 방지 장치에 관한 것이다.The present invention relates to a device for preventing a sensor failure error. More specifically, the ground potential difference between the engine and the vehicle body is determined when determining a sensor failure when a ground potential difference is generated between the engine and the body. The present invention relates to a device for preventing a malfunction of a sensor by applying an offset value to reduce the possibility of misdetecting a sensor.

종래에는 엔진과 차체간에 접시 전위차가 발생하여 센서 고장을 오판하는 경우에, 이를 방지하기 위해서 엔진과 차체를 일렉트릭 라인(Electnc Line)으로 연결한다.Conventionally, when a plate potential difference occurs between an engine and a vehicle body and a sensor malfunction is misjudged, the engine and the vehicle body are connected by an electric line to prevent this.

그러나 상기한 종래의 기술은 차량 노후화되어 생기는 센 저항으로 인해 전위차가 발생하는 경우에 센서 고장을 오판하는 문제점이 있다.However, the above-described conventional technique has a problem in that a sensor failure is misjudged when a potential difference occurs due to a strong resistance caused by vehicle aging.

따라서, 이 고안의 목적은 상기한 종래의 문제점을 해결하기 위한 것으로서, 엔진과 차체간에 접지 전위차 발생시 센서 고장을 판단하는 경우에, 엔진의 접지 신호를 디지탈 신호로 변환시켜, 그 차이 만큼의 전위차 값을 오프셋 값으로 적용하여 센서 고장의 오판 가능성을 줄이는 센서 고장 오판 방지 장치를 제공하는데 있다.Accordingly, an object of the present invention is to solve the above-described problems. When the sensor fault is determined when the ground potential difference is generated between the engine and the vehicle body, the ground signal of the engine is converted into a digital signal, and the potential difference value corresponding to the difference is determined. By providing the offset value as an offset value to provide a device for preventing sensor failure false positives to reduce the possibility of false detections.

상기한 목적을 달성하기 위한 수단으로써 이 고안의 구성은, 엔진과 차체간에 접지 전위차 발생시 전자 제어 장치(ECU, Electronic Control Unit)의 접지가 차체인 경우에, 엔진의 접지 신호를 디지탈 신호로 변환시켜 엔진과 차체간의 접지 전위차 값을 출력하는 A/D(Analog/Digital) 변환기와, 상기 A/D 변환기에서 출력되는 디지탈 신호인 엔진과 차체간의 접지 전위차 값을 오프셋 값으로 적용하여, 센서의 고장을 판단하는 마이크로 프로세서(Micro Processor)로 이루어 진다.As a means for achieving the above object, the configuration of the present invention converts the ground signal of the engine into a digital signal when the ground of the electronic control unit (ECU) is the vehicle body when a ground potential difference is generated between the engine and the vehicle body. A / D (Analog / Digital) converter that outputs the ground potential difference value between the engine and the vehicle body, and the ground potential difference value between the engine and the vehicle body, which are digital signals output from the A / D converter, are applied as offset values to prevent the sensor from failing. It is made of a micro processor (Micro Processor) to determine.

상기한 구성에 의하여, 이 고안이 속하는 기술분야에서 통상의 지식을 가진자가 이 고안을 용이하게 실시할 수 있는 가장 바람직한 실시예를 첨부된 도면을 참조로 하여 상세히 설명한다.By the above configuration, the most preferred embodiment that can be easily implemented by those skilled in the art to which this invention belongs will be described in detail with reference to the accompanying drawings.

제1도는 이 고안의 실시예에 따른 센서 고장 오판 방지 장치의 구성도이다.1 is a block diagram of a device for preventing a malfunction of a sensor malfunction according to an embodiment of the present invention.

첨부한 제1도에 도시되어 있는 바와 같이, 이 고안의 실시예에 따른 센서 고장 오판 방지 장치의 구성은, 엔진과 차체간에 접지 전위차 발생시 전자 제어 장치의 접지가 차체인 경우에, 엔진의 접지 신호를 디지탈 신호로 변환시켜 엔진과 차제간의 접지 전위차 값을 출력하는 A/D 변환기(1)와, 상기 A/D 변환기(2)에서 출력되는 디지탈 신호인 엔진과 차체간의 접지 전위차 값을 오프셋 값으로 적용하여, 센서의 고강을 판단하는 마이크로 프르세서(2)로 이루어진다.As shown in the attached FIG. 1, the configuration of the sensor malfunction erroneous prevention device according to the embodiment of the present invention is a ground signal of the engine when the ground of the electronic control device is a vehicle body when a ground potential difference is generated between the engine and the vehicle body. Is converted into a digital signal and outputs the ground potential difference value between the engine and the vehicle, and the ground potential difference value between the engine and the vehicle body, which is a digital signal output from the A / D converter 2, as an offset value. In addition, it consists of the microprocessor 2 which judges the high strength of a sensor.

상기한 구성에 의한, 이 고안의 실시예에 따른 센서 고장 오판 방지 장치의 작용은 다음과 같다.With the above configuration, the operation of the sensor malfunction erroneous prevention device according to the embodiment of the present invention is as follows.

엔진과 차체간에 접지 전위차가 발생하는 경우에 전자 제어 장치의 접지가 차체가 되면, A/D 변환기(1)는 엔진의 접지 신호를 디지탈 신호로 변환시켜 출력한다.When the ground potential difference between the engine and the vehicle body occurs, when the ground of the electronic control device becomes the vehicle body, the A / D converter 1 converts the engine ground signal into a digital signal and outputs it.

마이크로 프로세서(2)는 상기 A/D 변환기(2)에서 출력되는 디지탈 신호를 오프셋 값으로 적용하여, 센서의 고장을 판단한다.The microprocessor 2 determines the failure of the sensor by applying the digital signal output from the A / D converter 2 as an offset value.

즉, 센서 고장을 판단할 때 차체와 엔진간의 접지 전위차 값을 오프셋 값으로 적용하여, 접지 전위차에 의해 센서 고장의 오판을 방지하는 것이다.In other words, when determining a sensor failure, the ground potential difference value between the vehicle body and the engine is applied as an offset value, thereby preventing a mistake of the sensor failure due to the ground potential difference.

산소 센서(O2Sensor)의 경우에, 신호의 사용 범위가 O 내지 1 V이므로 접지 전위차가 100 내지 300 mV만 되어도, 센서의 고장을 판단할 때 오판 가능성을 발생시킨다.In the case of an oxygen sensor (O 2 Sensor), since the use range of the signal is 0 to 1 V, even if the ground potential difference is only 100 to 300 mV, there is a possibility of an erroneous judgment when determining the failure of the sensor.

따라서, 종래의 센서의 고장을 판정하는 범위( O2> x or O2< y )에 엔진과 차제간의 접지 전위차 값을 오프셋 값으로 적용하면, 센서의 고장을 판정하는 범위가 O2> x + c or O2< y + c 로 넓어지게 된다.Therefore, if the ground potential difference value between the engine and the vehicle is applied as an offset value to a range (O 2 > x or O 2 <y) for determining a failure of a conventional sensor, the range for determining a failure of the sensor is O 2 > x +. c or O 2 <y + c.

(여기서 c 는 엔지과 차체간의 접지 전위차 값이다).(Where c is the value of the ground potential difference between the engine and the body).

이처럼 센서의 고장을 판정하는 범위가 넓어지게 되므로, 센서의 고장을 오판할 수 있는 가능성은 줄어들게 되는 것이다.Thus, since the range for determining the failure of the sensor is widened, the possibility of misjudging the failure of the sensor is reduced.

이상에서와 같이 이 고안의 실시예에서, 엔진과 차체간에 접지 전위차 발생시 전자 제어 장지의 접지가 차체가 되는 경우 센서 고장을 판단할 때, 엔진의 접지 신호를 디지탈 신호로 변환시켜, 그 차이 만큼의 전위차 값을 오프셋 값으로 적용하여 센서 고장의 오판 가능성을 줄이는 효과를 가진 센서 고장 오판 방지 장치를 제공할 수 있다.As described above, in the embodiment of the present invention, when determining the sensor failure when the ground of the electronic control device becomes the vehicle body when the ground potential difference between the engine and the vehicle body occurs, the engine ground signal is converted into a digital signal, By applying the potential difference value as an offset value, it is possible to provide a sensor failure misjudgment device having an effect of reducing the possibility of false detection of sensor failure.

Claims (1)

엔진과 차체간에 접지 전위차 발생시 전자 제어 장치의 접지가 차체인 경우에, 엔진의 접지 신호를 디지탈 신호로 변환시켜 엔진과 차체간의 접지 전위차 값을 출력하는 A/D 변환기(1)와, 상기 A/D 변환기(2)에서 출력되는 디지탈 신호인 엔진과 차체간의 접지 전위차 값을 오프셋 값으로 적용하여, 센서의 고장을 판단하는 마이크로 프로세서(2)로 이루어지는 것을 특징으로 하는 센서 고장 오판 방지 장치.A / D converter 1 for converting an engine ground signal into a digital signal and outputting a ground potential difference value between the engine and the vehicle body when the ground of the electronic control device is a vehicle body when a ground potential difference is generated between the engine and the vehicle body, and the A / And a microprocessor (2) for determining a sensor failure by applying a ground potential difference value between the engine, which is a digital signal output from the D converter (2), and the vehicle body as an offset value.
KR2019950039318U 1995-12-08 1995-12-08 Device for preventing misjudgement of sensor error KR200178109Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019950039318U KR200178109Y1 (en) 1995-12-08 1995-12-08 Device for preventing misjudgement of sensor error

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019950039318U KR200178109Y1 (en) 1995-12-08 1995-12-08 Device for preventing misjudgement of sensor error

Publications (2)

Publication Number Publication Date
KR970034823U KR970034823U (en) 1997-07-26
KR200178109Y1 true KR200178109Y1 (en) 2000-06-01

Family

ID=19432701

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019950039318U KR200178109Y1 (en) 1995-12-08 1995-12-08 Device for preventing misjudgement of sensor error

Country Status (1)

Country Link
KR (1) KR200178109Y1 (en)

Also Published As

Publication number Publication date
KR970034823U (en) 1997-07-26

Similar Documents

Publication Publication Date Title
US5109819A (en) Accelerator control system for a motor vehicle
KR950000452A (en) Fault diagnosis device and fault diagnosis method of vehicle control device
US5789925A (en) Sensor system having abnormality detecting circuit for detecting abnormality of sensor system from outputs of signal processing circuits
JP2004294069A (en) Physical quantity sensor device
US8055404B2 (en) Sensor apparatus
US20100158082A1 (en) Transducer
KR200178109Y1 (en) Device for preventing misjudgement of sensor error
US7127369B2 (en) Sensor assembly
KR880004516A (en) Switch device
JP2010181393A (en) Sensor apparatus
JPS633275A (en) Abnormality detector for sensor system
JPH0129579Y2 (en)
US7235976B2 (en) Sensor for measuring the position of an actuating element
US3889259A (en) Vehicle speed sensor for skid control system
KR970044679A (en) How to diagnose throttle position sensor failure
KR940022296A (en) Secure analog interface
JPS6264921A (en) Apparatus for detecting knocking of engine
US6990967B2 (en) Potentiometer device for determination of valve positions
US12000715B2 (en) Device and method for contactlessly determining a position of a pedal
JP4345207B2 (en) Mechanical quantity detection sensor
JP4308624B2 (en) Engine control device
US20220074765A1 (en) Device and method for contactlessly determining a position of a pedal
SU1644281A1 (en) Device for protecting semiconductor converter
KR100273553B1 (en) Malfunction sensing method for rpm sensor of vehicle
JP3019607B2 (en) Overcurrent relay

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20040202

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee