KR100625435B1 - Device for preventing sudden start of automobiles - Google Patents

Device for preventing sudden start of automobiles Download PDF

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KR100625435B1
KR100625435B1 KR1019990060462A KR19990060462A KR100625435B1 KR 100625435 B1 KR100625435 B1 KR 100625435B1 KR 1019990060462 A KR1019990060462 A KR 1019990060462A KR 19990060462 A KR19990060462 A KR 19990060462A KR 100625435 B1 KR100625435 B1 KR 100625435B1
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South Korea
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vehicle
acceleration
microprocessor
sudden
engine
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KR1019990060462A
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Korean (ko)
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KR20010063391A (en
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류지성
전만철
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주식회사 현대오토넷
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
    • B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle 
    • B60K28/14—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle  responsive to accident or emergency, e.g. deceleration, tilt of vehicle
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/13—Failsafe arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/304—Acceleration sensors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

본 발명은 차량의 급발진 방지장치에 관한 것으로, 기존의 에어백 전자제어장치에 내장된 가속도 센서를 이용하여 급발진시 발생하는 가속도의 이상변화를 감지함으로써 엔진의 출력 및 브레이크 작동을 제어하여 급발진 사고를 미연에 방지할 수 있도록 한 차량의 급발진 방지장치에 관한 것이다.[0001] The present invention relates to an apparatus for preventing a sudden stoppage of a vehicle, and an acceleration sensor built in an existing airbag electronic control device is used to detect an abnormal change in acceleration occurring during a sudden acceleration, thereby controlling an output of the engine and a brake operation, To the vehicle suddenly stopping prevention device.

에어백 전자제어장치, 가속도 센서, 엔진출력, 브레이크, 오토차량Airbag electronic control device, acceleration sensor, engine output, brake, auto vehicle

Description

차량의 급발진 방지장치{Device for preventing sudden start of automobiles}Technical Field [0001] The present invention relates to a device for preventing sudden start of a vehicle,

도 1은 본 발명에 의한 차량의 급발진 방지장치의 개략적인 구조를 나타내는 도면,BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a schematic structure of a vehicle suddenly stopping prevention device according to the present invention,

도 2는 차량의 시간에 따른 가속도 변화를 나타내는 그래프,FIG. 2 is a graph showing changes in acceleration with time of the vehicle,

도 3은 차량의 시간에 따른 속도 변화를 나타내는 그래프,3 is a graph showing a change in speed of the vehicle with time,

도 4는 본 발명에 의한 차량의 급발진 방지장치의 처리흐름을 나타내는 플로챠트이다.4 is a flowchart showing a process flow of the vehicle suddenly stopping prevention device according to the present invention.

본 발명은 차량의 급발진 방지장치에 관한 것으로, 특히 에어백 전자제어장치에 내장된 가속도 센서를 이용하여 급발진시 발생하는 가속도의 이상변화를 감지함으로써 엔진의 출력 및 브레이크 작동을 제어할 수 있도록 한 차량의 급발진 방지장치에 관한 것이다.[0001] The present invention relates to a vehicle suddenly stopping apparatus, and more particularly, to a vehicle sudden stop control apparatus for an automotive vehicle which is capable of controlling an output of the engine and a brake operation by detecting an abnormal change in acceleration, To a suddenly stopping device.

근래에 차량의 급발진 사례가 급격하게 증가하고 있지만, 아직까지 급발진의 원인규명은 명확하게 되고 있지 않다. 선진 외국 업체들도 급발진 사고를 원인에 따른 별다른 대책이 없어 단순한 훅-브레이크의 설치로 대비하는 것에 그치고 있는 상황이며, 오토차량의 급발진 사고는 차량의 전자화가 진행될수록 증가추세에 있기 때문에 그 심각성이 더해지고 있다.Although the number of cases of sudden emergence of the vehicle has increased rapidly in recent years, the cause of the sudden occurrence has not yet been clarified. Advanced foreign companies are also preparing for the installation of a simple hook-brake because there is no specific countermeasures due to a sudden accident, and the sudden accident of an auto vehicle is increasing as the electronicization of the vehicle progresses. It is becoming more.

본 발명은 오토차량의 급발진 사고를 방지하기 위한 장치로서, 에어백 전자제어장치 내의 가속도 센서를 통하여 급발진시 발생하는 순간 가속도의 변화를 감지하여 급발진으로 판단되는 경우 엔진의 출력저하와 제동장치를 작동시킴으로써 급발진으로 인하여 일어나는 사고를 미연에 방지할 수 있는 차량의 급발진 방지장치를 제공하는 것을 목적으로 하고 있다. The present invention relates to an apparatus for preventing a sudden accident in an auto-vehicle, comprising: an acceleration sensor in an airbag electronic control unit for detecting a change in an instantaneous acceleration occurring during a sudden acceleration, And it is an object of the present invention to provide a vehicle suddenly stopping prevention device which can prevent an accident caused by a sudden start.

상기 목적을 달성하기 위하여, 본 발명의 차량의 급발진 방지장치는 차량의 전후진시 순간가속도를 감지하는 가속도 센서와, 상기 가속도센서에 의해 감지된 가속도로부터 현재의 순간속도를 계산하고, 이 순간속도와 소정의 드레시홀드값을 비교하는 것에 의해 차량의 급발진여부를 판단하여 각 부를 제어하는 제어신호를 출력하는 마이크로프로세서를 구비한 에어백 전자제어장치와;In order to attain the above object, the vehicle suddenly stopping device of the present invention includes an acceleration sensor for detecting an instantaneous acceleration of the vehicle when the vehicle is backward and forward, a current instantaneous speed calculating unit for calculating a current instantaneous speed from the acceleration sensed by the acceleration sensor, An airbag electronic control device having a microprocessor for judging whether the vehicle is suddenly driven by comparing a predetermined threshold value and outputting a control signal for controlling the respective units;

상기 마이크로프로세서의 제어신호를 받아 엔진의 출력이 저하되도록 조절하는 엔진제어장치와;An engine control unit for receiving the control signal of the microprocessor and controlling the output of the engine to be lowered;

상기 마이크로프로세서의 제어신호를 받아 브레이크를 작동시키는 브레이크제동장치로 이루어지는 것을 특징으로 한다.And a brake braking device for operating the brake in response to the control signal of the microprocessor.

본 고안의 특징 및 이점들은 첨부도면에 의거한 다음의 설명으로 더욱 명백 해진다.The features and advantages of the present invention will become more apparent from the following description based on the accompanying drawings.

도 1에 나타낸 바와 같이 본 발명의 차량의 급발진 방지장치는, 에어백 전자제어장치와 엔진/브레이크 제어장치로 이루어져 있으며, 에어백 전자제어장치에는 가속도 센서와 마이크로프로세서가 내장되어 있다.As shown in FIG. 1, the vehicle suddenly stopping device of the present invention comprises an airbag electronic control device and an engine / brake control device, and the airbag electronic control device includes an acceleration sensor and a microprocessor.

본 발명에서는 급발진시 발생하는 가속도의 변화를 감지하기 위하여, 현재 차량에 장착되어 있는 에어백 전자제어장치 내부의 가속도 센서를 사용한다. 이 가속도 센서는 본래는 차량의 충돌시 발생하는 차량의 충돌신호를 감지하여 에어백을 작동시키기 위한 용도로 사용되는 것이지만, 본 발명에서는 차량의 점화스위치(IGN)를 온(ON)한 후 1∼2분간 급발진 여부를 체크하기 위한 용도로 사용된다.In the present invention, an acceleration sensor inside an electronic control unit of an airbag currently installed in a vehicle is used to detect a change in acceleration occurring in a sudden acceleration. This acceleration sensor is originally used for detecting an impact signal of a vehicle caused by a vehicle collision to operate the airbag. In the present invention, the ignition switch IGN of the vehicle is turned ON, It is used to check whether there is a sudden start of a minute.

도 2에는 가속도센서에서 감지된 시간에 따른 가속도의 변화가 나타내져 있다. 도 2(a)는 정상상태에서의 차량의 시간에 따른 가속도를 나타낸 그래프이고, 도 2(b)는 급발진 차량의 시간에 따른 가속도를 나타낸 것이다.FIG. 2 shows the change in acceleration according to the time sensed by the acceleration sensor. FIG. 2 (a) is a graph showing acceleration versus time of the vehicle in a steady state, and FIG. 2 (b) is a graph showing acceleration with time of a suddenly driven vehicle.

한편, 상기의 가속도 센서에 의해 감지된 시간에 따른 가속도 신호는 에어백 전자제어장치 내부에 설치된 마이크로프로세서에 입력되어 급발진 여부를 판단하기 위한 데이터로 이용된다. 상기 마이크로프로세서는 상기 가속도신호를 속도로 환산하여 사용자에 의해 미리 설정된 드레시홀드 속도값과 비교하여, 드레시홀드 값보다 현재차량의 속도가 더 큰 경우에는 급발진으로 판단하는 계산로직으로 구성된다. Meanwhile, an acceleration signal according to the time sensed by the acceleration sensor is input to a microprocessor installed in the electronic control unit of the airbag, and used as data for determining whether or not the vehicle suddenly emerges. The microprocessor compares the acceleration signal with a speed and compares the acceleration signal with a preset threshold speed value by a user. When the speed of the current vehicle is greater than the threshold value, the microprocessor determines the speed of the vehicle as a sudden acceleration.

마이크로프로세서가 가속도로부터 속도를 산출하는 방식은,The manner in which the microprocessor calculates the velocity from the acceleration,

V(t) = a(0) +‥‥ +a(t-1) + a(t) ----------(1) V (t) = a (0) + ... + a (t-1) + a (t)

의 식에 따른 연산에 의하며(여기서 V(t)는 t시각에서의 속도를, a(t)는 t시각에서의 가속도를 나타낸다), 도 3은 도 2의 가속도 그래프를 상기 (1)식에 의해 계산된 속도 그래프로 환산하여 나타낸 것이다. 즉 도 3(a)는 정상상태의 시간에 따른 속도 그래프를 나타낸 것이고, 도 3(b)는 급발진시의 시간에 따른 속도그래프를 나타낸 것이다. 또한 도 3에 나타낸 바와 같이 정상상태에서의 차량의 속도는 미리 사용자가 설정한 속도의 드레시홀드 값을 넘지 않지만, 급발진 시의 차량의 속도는 순간가속도가 크기 때문에 쉽게 상기 드레시홀드 값을 넘게 됨을 알 수 있다. (Where t (t) represents the acceleration at time t, and a (t) represents the acceleration at time t). FIG. 3 is a graph showing the acceleration graph of FIG. And the speed is calculated by the speed graph. That is, FIG. 3 (a) shows a velocity graph according to time in a steady state, and FIG. 3 (b) shows a velocity graph according to time during a sudden acceleration. Further, as shown in Fig. 3, the vehicle speed in the steady state does not exceed the threshold value of the speed set by the user in advance, but the speed of the vehicle at the time of sudden acceleration is such that the instantaneous acceleration is large, .

한편 마이크로프로세서는 현재 차량의 속도가 급발진으로 판단되면 엔진 제어장치 및 브레이크 제동장치에 제어신호를 송신하도록 동작하며, 엔진 제어장치는 상기 제어신호를 받아 엔진의 출력을 저하시키도록 동작하고, 브레이크 제동장치는 상기 제어신호를 받아 브레이크를 작동시킨다. The microprocessor operates to transmit a control signal to the engine controller and the brake braking device when it is determined that the speed of the vehicle is suddenly increased. The engine control device operates to lower the output of the engine in response to the control signal, The device receives the control signal and operates the brake.

도 4는 본 발명의 차량의 급발진 방지장치의 처리흐름을 플로챠트로 나타낸 것이며, 본 장치에서 급발진 여부의 체크는 점화스위치(IGN)가 온된 후 1∼2분간만 실행되는 것이고, 그 이후에는 에어백 전자제어장치의 기본 기능으로 돌아가도록 되어 있다. 4 is a flowchart showing a process flow of the vehicle suddenly stopping prevention apparatus of the present invention. The check of whether or not the vehicle suddenly starts is executed only for 1 to 2 minutes after the ignition switch IGN is turned on, And returns to the basic function of the electronic control unit.

상기한 본 발명의 구성에 의하면, 기존의 에어백 전자제어장치의 가속도센서를 이용하여 간편하게 차량의 전후진 급발진여부를 판단하고, 급발진으로 판단된 경우에는 엔진의 출력을 저하시키고 브레이크를 작동시킴으로써, 급발진으로 인한 인적 및 물적손실을 미연에 방지할 수 있게 된다.According to the structure of the present invention described above, it is possible to easily judge whether the vehicle is running forward or backward by using an acceleration sensor of an existing airbag electronic control unit. If it is determined that the vehicle is suddenly driven, the output of the engine is lowered, It is possible to prevent human and material losses due to the above-mentioned problems.

Claims (1)

차량의 전후진시 순간가속도를 감지하는 에어백 전자제어장치 내부의 가속도 센서와, 차량의 점화스위치를 온한 후 1~2분간 상기 가속도센서에 의해 감지된 가속도로부터 현재의 순간속도를 계산하고, 이 순간속도와 소정의 드레시홀드값을 비교하는 것에 의해 차량의 급발진여부를 판단하여 각 부를 제어하는 제어신호를 출력하는 마이크로프로세서를 구비한 에어백 전자제어장치와;An acceleration sensor in an airbag electronic control unit for sensing an instantaneous acceleration of the vehicle in a forward and backward direction and a current instantaneous speed from an acceleration sensed by the acceleration sensor for 1 to 2 minutes after turning on an ignition switch of the vehicle, And a microprocessor for judging whether the vehicle is suddenly driven by comparing a predetermined threshold value and outputting a control signal for controlling the respective units; 급발진 판단시, 상기 마이크로프로세서의 제어신호를 받아 엔진의 출력이 저하되도록 조절하는 엔진제어장치와;An engine control unit for receiving the control signal of the microprocessor and controlling the output of the engine to be lowered when the vehicle suddenly decides; 급발진 판단시, 상기 마이크로프로세서의 제어신호를 받아 브레이크를 작동시키는 브레이크제동장치;A brake braking device for operating the brake in response to a control signal from the microprocessor when a sudden acceleration is detected; 로 구성되는 것을 특징으로 하는 차량의 급발진 방지장치. And the vehicle is stopped.
KR1019990060462A 1999-12-22 1999-12-22 Device for preventing sudden start of automobiles KR100625435B1 (en)

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KR100352072B1 (en) * 1999-06-01 2002-09-12 이승현 The apparatus and the control method of urgent departure for a car of automatic transmission
KR20000017692A (en) * 1999-06-05 2000-04-06 홍순기 A method and a system for forecasting and controlling an abruptly driving of a vehicle having an automatic transmission

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