[go: up one dir, main page]

WO1996031364A1 - Amelioration de l'allumage anticipe des feux de stop sur un vehicule - Google Patents

Amelioration de l'allumage anticipe des feux de stop sur un vehicule Download PDF

Info

Publication number
WO1996031364A1
WO1996031364A1 PCT/US1996/004621 US9604621W WO9631364A1 WO 1996031364 A1 WO1996031364 A1 WO 1996031364A1 US 9604621 W US9604621 W US 9604621W WO 9631364 A1 WO9631364 A1 WO 9631364A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
fuel supply
change
negative rate
value
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US1996/004621
Other languages
English (en)
Inventor
Avigdor Kaner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baran Advanced Technologies 1986 Ltd
Original Assignee
Baran Advanced Technologies 1986 Ltd
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 Baran Advanced Technologies 1986 Ltd filed Critical Baran Advanced Technologies 1986 Ltd
Priority to EP96911572A priority Critical patent/EP0819067A1/fr
Priority to US08/913,496 priority patent/US5942972A/en
Priority to AU54419/96A priority patent/AU5441996A/en
Publication of WO1996031364A1 publication Critical patent/WO1996031364A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal

Definitions

  • the invention is an improvement to devices which anticipate braking and cause early lighting of stop lights in vehicles.
  • the invention substantially reduces false alarms from which current systems suffer due to differences in driving behavior among different drivers, by learning the behavior of individual drivers, and adapting the system to act according to the driver using the vehicle.
  • Safety systems for early lighting of stop lights in vehicles are well known in the vehicle industry, and have become an integral part of many vehicles.
  • the systems try to foresee when the driver releases the pressure on the accelerator pedal or shortly thereafter, if he intends to activate the brakes, and if ⁇ o, immediately to light the rear stop lights. If the system determines that the driver released the acceleration pedal with no intention to activate the brakes, no early lighting is activated.
  • These systems can normally reduce approximately 0.250 second from the interval between the time that the driver decides to brake until the stop lights are actually lighted, a reduction that in many cases can be critical. Examples for such systems can be found in US 3,089,129, US 3,501,742 and US 4,916,431.
  • an electronic signal which is relative to the rate of negative change in the fuel supply is provided, and if the signal level is above a predetermined threshold, the system immediately activates the stop lamps.
  • the predetermined threshold level is a critical parameter which should be carefully selected.
  • the safety system for early lighting of stop lights in vehicles comprising means for measuring the negative rate of change in the fuel supply to the engine, converting same to an electronic analog or digital value, means for comparing said value to a preassigned threshold level, and means for lighting the stop lights if said value is higher than said threshold level, and characterized in that it comprises means for adapting the system to the driving behavior of the driver actually driving the vehicle, which means comprise means for storing in memory means, hereinafter referred to also as "register", the value correspond to negative rates of change in the fuel supply to the engine which are actually followed by brake activation processing means for reading all values recorded in said register, averaging them, and assigning the resulting average as a reference value, and means for updating the threshold value by an amount which is dependent from the said reference value.
  • the processing means comprise a microprocessor or a microcontroller, and the means for registering in a register the values corresponding to the negative rate of change in the fuel supply to the engine and which axe actually followed by braking activations, is the memory of said microprocessor or a microcontroller.
  • the means for measuring the negative rate of change in the fuel supply to the engine comprise sensors which generate a signal relared to the movement of the accelerator pedal.
  • the means for measuring the negative rate of change in the fuel supply to the engine comprise sensors measuring the movement of the accelerator lever in the carburetor.
  • the processing means and the means for registering the negative rate of change in the fuel supply to the engine are associated with the built-in vehicle computer.
  • the invention further includes a method for learning the braking behavior of drivers, and setting a threshold value related to the specific driver actually driving the vehicle which comprising performing the following:
  • Fig. 1 diagramatically illustrates a system for early lighting of stop lights in vehicles, according to the prior art.
  • FIG. 2 diagramatically illustrates an improved scheme of a system for early lighting of stop lights in vehicles, according to a preferred embodiment of the invention.
  • - Fig. 3 is a flow diagram which illustrates the operation of the processing unit for learning the braking behavior of the driver, and updating the threshold level accordingly.
  • Figure 1 illustrates a general diagram of a typical prior art system for early lighting of stop lights in vehicles.
  • Numeral 1 indicates the gas sensor which senses the rate of negative change in the gas supply to the engine, sensors which may be located for example near the gas pedal, near the lever which connects the carburetor to the acceleration cable or elsewhere, as hereinbefore set forth.
  • Numeral 2 indicates an adjustable component (in this case a variable resistor) for assigning a voltage threshold level to be fod to input point 3 of comparator 4.
  • the sensor 1 provides an electric voltage level which directly corresponds to the rate of negative change in fuel supply to the engine, measurement which for example may be taken from the acceleration pedal 14 or from the carburetor lever as hereinbefore set forth.
  • the sensed voltage level is transferred to input point 5 of comparator 4, which compares said sensed level to the preassigned threshold level. If the level is above the threshold level, the system assumes that the driver intends to brake, and supplies a positive voltage through line 7 and timer 9 to the filaments of the stop lamps 8 in order to light them.
  • Numeral 11 indicates the brakes pedal, and numeral 10 indicates the conventional brakes switch associated with the brakes pedal.
  • a fixed threshold level is preassigned based on previous experience. Then, each time that the comparator receives a signal through point 5 indicating a level above the threshold level, the comparator activates the stop lights. Timer 9 disconnects the early lighting voltage from the stop lamps after a preassigned short period, whereby to connect the lamps to the voltage supply of the regular braking system. Timer 9 is important especially in cases when faulty initiation of early lighting occurs.
  • the invention provides a system that adapts itself to the driving behavior of the driver actually driving the vehicle, and even continuously corrects the threshold level (hereinafter the term "level" corresponds to the rate of negative change in the fuel supply to the engine, above which early activation of the stop lights is desired) according to the actual driving behavior of the driver, a behavior which may change from time to time.
  • the invention provides an addition of a small processing unit such as a basic digital microprocessor or a microcontroller to the system.
  • the purpose of the small processing unit is to learn the behavior of specific drivers, and to estimate whether, when a driver reduces pressure on the accelerator (e.g., removes his foot from the accelerator pedal), he intends actually to brake (e.g., presses the brake pedal).
  • the processor assigns to different drivers a different threshold level for activating early lighting.
  • the processing unit can be relatively simple and basic because the operations which have to be performed by the unit are quite simple, basic and repetitive. Such processing units exist in the market in a very low price, and occupy a relatively small volume. According to another embodiment of the invention, the processing operations can be performed by a microprocessor that already exists in many modern vehicles for providing information to the driver or controlling the functioning of different units of the vehicle such as lights, engines, doors, etc. If this option is chosen, the system of the invention is associated with this microprocessor.
  • FIG. 2 An improved system for early lighting of stop lights in vehicles according to a preferred embodiment of the invention, is shown in a general form in Fig. 2.
  • 1 indicates the ⁇ ensor
  • 4 indicates a comparator
  • 17 is the carburetor lever given as an example for the position of the sensors
  • numerals 11 and 14 indicate the brakes and acceleration pedals accordingly
  • 9 indicates a timer.
  • a preassigned threshold voltage level that reflects the negative rate of change in fuel supply to the engine is set. The system continuously measures said negative rate of change, and verifies if a specific sensed level is followed or not by an activation of brakes. Each time brakes activation is detected, the corresponding level sensed just before the activation of the brakes is recorded in the register.
  • the processing unit averages the levels recorded in the register, and provides a new level directly relative to said average level to be assigned as the new threshold level.
  • This procedure provides a threshold level that is continuously updated and assigned according to the actual braking behavior of the driver. It is recommended that as soon as the vehicle starts, an initial threshold, not dependent on the driver driving behavior be set. Then, the operation of the system will be based initially on this threshold level, which later on will be updated as described.
  • Fig. 3 shows the system operation in a flow diagram form.
  • an initial threshold is set.
  • a continuous check of the acceleration system is made and, if and only if a rate of change in the fuel supply to the engine which is above the threshold level is sensed, a value representing the sensed threshold level is stored in a temporary storage. Otherwise, the measurement continuous. If measurement above the threshold level is detected, a short interval timer of about 1 second is set in order to check if brakes activation follows the sensed above the level measurement. If no brakes activation follows, the measurement continuous in order to detect a new above the threshold level case. Otherwise, if brakes activation follows the above the threshold level measurement, the level stored in the temporary storage is transferred into an [n] cells register.
  • the initial threshold level is the level that had been set when the driver lastly left the vehicle.
  • a code may be given to each driver, a specific threshold will be assigned by the system to each driver, and, on starting the vehicle, the driver will key in his ID code, and the system will set same driver's code.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

Cette invention concerne un système de sécurité qui permet l'allumage anticipé des feux de stop sur un véhicule, et qui comprend un dispositif de mesure du taux de changement négatif de l'alimentation en carburant du moteur, lequel taux est ensuite converti en une valeur électronique analogique ou numérique. Un dispositif va comparer la valeur correspondant au taux de changement négatif de l'alimentation en carburant du moteur, à un niveau seuil préétabli. Un autre dispositif, enfin, allumera les feux de stop dans le cas où ladite valeur dépasse le niveau seuil.
PCT/US1996/004621 1995-04-06 1996-04-04 Amelioration de l'allumage anticipe des feux de stop sur un vehicule Ceased WO1996031364A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP96911572A EP0819067A1 (fr) 1995-04-06 1996-04-04 Amelioration de l'allumage anticipe des feux de stop sur un vehicule
US08/913,496 US5942972A (en) 1995-04-06 1996-04-04 Early lighting of brake-lights in vehicles
AU54419/96A AU5441996A (en) 1995-04-06 1996-04-04 Improvement to early lighting of brake-lights in vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL11328595A IL113285A0 (en) 1995-04-06 1995-04-06 Improvement to early lighting of brake-lights in vehicles
IL113285 1995-04-06

Publications (1)

Publication Number Publication Date
WO1996031364A1 true WO1996031364A1 (fr) 1996-10-10

Family

ID=11067330

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/004621 Ceased WO1996031364A1 (fr) 1995-04-06 1996-04-04 Amelioration de l'allumage anticipe des feux de stop sur un vehicule

Country Status (4)

Country Link
EP (1) EP0819067A1 (fr)
AU (1) AU5441996A (fr)
IL (1) IL113285A0 (fr)
WO (1) WO1996031364A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998042535A1 (fr) * 1997-03-25 1998-10-01 Robert Bosch Gmbh Systeme pour produire un signal de freinage dans un vehicule a moteur
EP0890477A2 (fr) 1997-07-11 1999-01-13 Volkswagen Aktiengesellschaft Sytème de présignalisation pour freinage
DE102006021458A1 (de) * 2006-05-09 2007-11-15 Bayerische Motoren Werke Ag Kraftfahrzeug mit einer Bremsvorgangsanzeigeeinrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640918A1 (en) * 1988-12-26 1990-06-29 Rouche Daniel Device signalling the slowing down of a decelerating vehicle by resistive action of its heat engine
US4952909A (en) * 1989-11-03 1990-08-28 Harold A. Caine Early warning system for anticipated vehicle braking
DE4236395A1 (de) * 1992-10-28 1994-05-05 Max Flechsig Anordnung zur Erfassung und Anzeige von Bremsvorgängen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640918A1 (en) * 1988-12-26 1990-06-29 Rouche Daniel Device signalling the slowing down of a decelerating vehicle by resistive action of its heat engine
US4952909A (en) * 1989-11-03 1990-08-28 Harold A. Caine Early warning system for anticipated vehicle braking
DE4236395A1 (de) * 1992-10-28 1994-05-05 Max Flechsig Anordnung zur Erfassung und Anzeige von Bremsvorgängen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998042535A1 (fr) * 1997-03-25 1998-10-01 Robert Bosch Gmbh Systeme pour produire un signal de freinage dans un vehicule a moteur
EP0890477A2 (fr) 1997-07-11 1999-01-13 Volkswagen Aktiengesellschaft Sytème de présignalisation pour freinage
DE19729853A1 (de) * 1997-07-11 1999-01-14 Volkswagen Ag Bremsvorwarnsystem
DE19729853C2 (de) * 1997-07-11 2003-12-11 Volkswagen Ag Bremsvorwarnsystem
DE102006021458A1 (de) * 2006-05-09 2007-11-15 Bayerische Motoren Werke Ag Kraftfahrzeug mit einer Bremsvorgangsanzeigeeinrichtung

Also Published As

Publication number Publication date
IL113285A0 (en) 1995-07-31
EP0819067A1 (fr) 1998-01-21
AU5441996A (en) 1996-10-23

Similar Documents

Publication Publication Date Title
JP4558933B2 (ja) 制動距離の短縮方法及びその装置
US7407463B2 (en) Method and system for controlling a braking system equipped with an electric parking brake
US5139115A (en) Anti-lock braking indicator system
US5942972A (en) Early lighting of brake-lights in vehicles
US20220161812A1 (en) Vehicle control apparatus and vehicle control method
US5075669A (en) Warning system for detecting burned-out condition of automotive lamps
US4987872A (en) Process and device for monitoring a set value indicator of a drive motor of a motor vehicle
US4059824A (en) Automotive light for preventing rear end collision
US5241478A (en) Automotive traction control system
WO2000044079A2 (fr) Dispositif et procede permettant d'indiquer le chargement ou le dechargement anormal en cours d'utilisation d'une batterie d'un moteur a combustion suite a l'arret du moteur
WO1996031364A1 (fr) Amelioration de l'allumage anticipe des feux de stop sur un vehicule
US20020190854A1 (en) Deceleration light indicator and method therefor
WO2000040434A1 (fr) Feu d'arret differe pour automobile
US6462649B1 (en) Air bag failure display system and method
US6614346B2 (en) Method and device for diagnosing a brake switch
CN210760456U (zh) 制动灯控制系统及车辆
US6765483B1 (en) Method and apparatus for locking and unlocking brake lights
JP3143452B2 (ja) 駆動ユニットの制御方法および装置
CN113199983A (zh) 一种制动灯控制方法及线控制动系统
KR950026735A (ko) 급제동 및 추돌/충돌시 비상등자동 구동방법
JP3596088B2 (ja) 車両用制動報知装置
KR0163341B1 (ko) 자동차용 배터리의 무단방전방지 제어방법
KR100405343B1 (ko) 차량의 제동등 점등 제어 장치 및 그 방법
WO1998004435A9 (fr) Systeme de signalisation pour vehicule
JP2964286B2 (ja) 居眠り運転検出装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1996911572

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 08913496

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 1996911572

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA

WWW Wipo information: withdrawn in national office

Ref document number: 1996911572

Country of ref document: EP