FR2818942A1 - System for visualizing the rate of braking of an automotive vehicle, has arrangement such that the brightness of the brake light increases according to the pressure on the brake pedal - Google Patents

System for visualizing the rate of braking of an automotive vehicle, has arrangement such that the brightness of the brake light increases according to the pressure on the brake pedal Download PDF

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Publication number
FR2818942A1
FR2818942A1 FR0017179A FR0017179A FR2818942A1 FR 2818942 A1 FR2818942 A1 FR 2818942A1 FR 0017179 A FR0017179 A FR 0017179A FR 0017179 A FR0017179 A FR 0017179A FR 2818942 A1 FR2818942 A1 FR 2818942A1
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Prior art keywords
brake
pressure
braking
vehicle
lights
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FR0017179A
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French (fr)
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FR2818942B1 (en
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Denis Francois Rene Michel
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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
    • B60Q1/444—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 with indication of the braking strength or speed changes, e.g. by changing shape or intensity of the indication

Abstract

The device includes a pressure sensor measuring the hydraulic pressure in the brake circuit of the vehicle, which is associated with an electronic circuit, augmenting the brightness of the step lights proportionally to the pressure exerted by the driver on the brake pedal. When the braking pressure is above a certain value, translating to an emergency braking, it automatically illuminates the distress lights to warn motorists behind the vehicle of this fact.

Description

<Desc/Clms Page number 1> <Desc / Clms Page number 1>

La présente invention concerne un dispositif permettant de visualiser le taux de freinage d'un véhicule.  The present invention relates to a device for viewing the braking rate of a vehicle.

La visualisation actuelle de freinage d'un véhicule se fait par l'alimentation en tout ou rien de feux de stop situés à l'arrière du véhicule. Cette alimentation est contrôlée par un contact électrique situé sur la pédale de frein. Cette indication de freinage n'est donc pas le reflet du ralentissement du véhicule. En effet, on ne peut pas faire la différence entre un conducteur qui effleure sa pédale de frein et celui qui freine d'urgence. Ce manque d'indication de ralentissement peut être la source d'accident (surprise d'un arrêt brusque ou fausse alerte, surtout sur autoroute).  The current brake display of a vehicle is done by supplying all-or-nothing brake lights located at the rear of the vehicle. This supply is controlled by an electrical contact located on the brake pedal. This braking indication is therefore not a reflection of the vehicle slowing down. You can't tell the difference between a driver who touches his brake pedal and one who brakes emergency. This lack of slowdown indication can be the source of an accident (surprise of a sudden stop or false alarm, especially on motorways).

Certains véhicules sont équipés d'un troisième feu stop situé au centre de la lunette arrière, mais ce feu génère plus une peur et un éblouissement qu'un gain de sécurité.  Some vehicles are equipped with a third brake light located in the center of the rear window, but this light generates more fear and dazzle than safety gain.

Le dispositif selon l'invention permet d'améliorer la sécurité routière en donnant l'image du ralentissement d'un véhicule par allumage différencié des feux stop, selon la pression du conducteur sur sa pédale de frein. Cet allumage des feux stop commence par un seuil minimum dés que l'on appuie sur la pédale. Il est suivi d'une augmentation d'allumage proportionnelle à la pression dans le circuit hydraulique de freinage. Il est complété par la mise en service automatique des feux de détresse, dés que la pression atteint un certain seuil correspondant au freinage d'urgence.  The device according to the invention makes it possible to improve road safety by giving the image of the slowing down of a vehicle by differentiated ignition of the brake lights, according to the pressure of the driver on his brake pedal. This lighting of the brake lights begins with a minimum threshold as soon as the pedal is depressed. It is followed by an ignition increase proportional to the pressure in the hydraulic braking circuit. It is completed by the automatic activation of the hazard warning lights as soon as the pressure reaches a certain threshold corresponding to emergency braking.

Ces fonctions sont assurées par un capteur de pression placé sur le circuit hydraulique de freinage du véhicule. Ce capteur agit sur un circuit électronique qui amplifie et compare son signal électrique. Une sortie de ce circuit électronique agit directement sur les lampes des feux stop, tandis qu'une autre sortie, sous forme d'un contact de relais, enclenche les feux de détresse. Trois réglages permettent d'adapter l'invention au type de véhicule et de programmer les différents seuils de fonctionnement : - un pour le gain d'amplification selon la pression maximum de freinage (P2) - un pour le seuil minimum d'allumage (P1) - un pour l'enclenchement des feux de détresse (P3)  These functions are provided by a pressure sensor placed on the vehicle's hydraulic braking circuit. This sensor acts on an electronic circuit which amplifies and compares its electrical signal. One output of this electronic circuit acts directly on the brake light lamps, while another output, in the form of a relay contact, activates the hazard lights. Three settings make it possible to adapt the invention to the type of vehicle and to program the different operating thresholds: - one for the gain in amplification according to the maximum braking pressure (P2) - one for the minimum ignition threshold (P1 ) - one for switching on the hazard warning lights (P3)

<Desc/Clms Page number 2> <Desc / Clms Page number 2>

Selon le type de véhicule, le capteur de pression peut également être changé. Le dispositif peut être installé dans un boîtier, sous le capot moteur du véhicule, raccordé au circuit électrique et hydraulique pendant ou après la fabrication du véhicule, rendant l'invention facilement adaptable. Depending on the type of vehicle, the pressure sensor can also be changed. The device can be installed in a housing, under the engine hood of the vehicle, connected to the electrical and hydraulic circuit during or after the manufacture of the vehicle, making the invention easily adaptable.

Les dessins annexés illustre l'invention : - La figure 1 représente son schéma fonctionnel et l'environnement - La figure 2 représente son schéma électronique de réalisation.  The accompanying drawings illustrate the invention: - Figure 1 shows its functional diagram and the environment - Figure 2 shows its electronic embodiment.

En référence à ces dessins, le dispositif comporte un capteur de pression électronique (KP), délivrant une tension variable proportionnelle à la pression du circuit hydraulique. La sortie électrique de ce capteur est reliée à l'entrée d'un amplificateur opérationnel (A1) dont le repos-offset-et le gain sont réglables respectivement par (P1) et (P2). La sortie de cet amplificateur alimente un ampli de courant (T1) et un comparateur (A2). Le transistor (T1) alimente directement les lampes des feux stop (L1). L'ampli opérationnel (A2) est monté en comparateur ; Il permet de comparer la sortie de l'ampli (A1), image de la pression de freinage, avec une consigne programmée par (P3), enclenchant ainsi le relais (KA1), par l'intermédiaire de (T2), au-delà d'une certaine pression correspondant au freinage d'urgence. Le contact de ce relais est placé en parallèle sur l'interrupteur de mise en service manuelle des feux de détresse (K2). Ce relais peut comporter plusieurs contacts, pour adapter le montage au circuit électrique du véhicule. Il permet également une séparation galvanique entre le dispositif et les feux de détresse. Le montage est alimenté par le contact de freinage existant

Figure img00020001

(Kl). With reference to these drawings, the device comprises an electronic pressure sensor (KP), delivering a variable voltage proportional to the pressure of the hydraulic circuit. The electrical output of this sensor is connected to the input of an operational amplifier (A1) whose rest-offset-and gain are adjustable respectively by (P1) and (P2). The output of this amplifier supplies a current amplifier (T1) and a comparator (A2). The transistor (T1) directly supplies the brake light lamps (L1). The operational amplifier (A2) is mounted as a comparator; It makes it possible to compare the output of the amplifier (A1), image of the braking pressure, with a setpoint programmed by (P3), thus activating the relay (KA1), via (T2), beyond of a certain pressure corresponding to emergency braking. The contact of this relay is placed in parallel on the switch for manual activation of the hazard warning lights (K2). This relay can have several contacts, to adapt the mounting to the vehicle's electrical circuit. It also allows galvanic separation between the device and the hazard warning lights. The assembly is powered by the existing brake contact
Figure img00020001

(Kl).

La valeur et la référence des composants sont données à titre indicatif et peuvent varier selon le fabricant.  The value and the reference of the components are given as an indication and can vary according to the manufacturer.

Le réglage du dispositif s'opère ainsi : - appui léger sur la pédale de frein, juste pour actionner le contact de freinage : régler (P1) pour obtenir l'allumage moyen des feux stop - appui total sur la pédale de frein pour obtenir la pression maximum de freinage : régler (P2) pour obtenir l'allumage total des feux stop et (P3) jusqu'à l'enclenchement des feux de détresse The device is adjusted as follows: - light pressure on the brake pedal, just to activate the brake contact: adjust (P1) to obtain the average ignition of the brake lights - full pressure on the brake pedal to obtain the maximum braking pressure: set (P2) to obtain total ignition of the brake lights and (P3) until the hazard warning lights are engaged

Claims (4)

REVENDICATIONS 1) Dispositif électronique donnant l'indication visuelle du taux de freinage d'un véhicule caractérisé par l'allumage différencié des feux de stop et de l'activation automatique des feux de détresse de ce véhicule. 1) Electronic device giving the visual indication of the braking rate of a vehicle characterized by the different lighting of the brake lights and the automatic activation of the hazard lights of this vehicle. 2) Dispositif selon la revendication 1 caractérisé par l'utilisation d'un capteur de pression (KP) inséré dans le circuit hydraulique de freinage du véhicule. Ce capteur, via le circuit électronique de contrôle, augmente l'allumage des feux stop proportionnellement à la pression de freinage.  2) Device according to claim 1 characterized by the use of a pressure sensor (KP) inserted in the hydraulic brake system of the vehicle. This sensor, via the electronic control circuit, increases the ignition of the brake lights in proportion to the braking pressure. 3) Dispositif selon la revendication 1 caractérisé par l'allumage moyen des feux de stop dés que l'on appuie sur la pédale de frein (K1), prévenant ainsi de l'intention de freiner du conducteur.  3) Device according to claim 1 characterized by the average ignition of the brake lights as soon as one presses on the brake pedal (K1), thus preventing the intention to brake the driver. 4) Dispositif selon la revendication 1 caractérisé par l'activation automatique des feux de détresse (K2) en cas de freinage d'urgence de ce véhicule. 4) Device according to claim 1 characterized by the automatic activation of the hazard lights (K2) in case of emergency braking of this vehicle.
FR0017179A 2000-12-28 2000-12-28 DEVICE FOR VISUALIZING THE BRAKING RATE OF A VEHICLE Expired - Fee Related FR2818942B1 (en)

Priority Applications (1)

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FR0017179A FR2818942B1 (en) 2000-12-28 2000-12-28 DEVICE FOR VISUALIZING THE BRAKING RATE OF A VEHICLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0017179A FR2818942B1 (en) 2000-12-28 2000-12-28 DEVICE FOR VISUALIZING THE BRAKING RATE OF A VEHICLE

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926510A1 (en) * 2008-01-23 2009-07-24 Elie Feitler VARIABLE BRAKING AND SIGNALING SYSTEM FOR A VEHICLE
EP3187384A1 (en) * 2015-12-30 2017-07-05 Thunder Power New Energy Vehicle Development Company Limited Dynamic brake force indicator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436368A2 (en) * 1990-01-02 1991-07-10 Ian Derek Cook Road vehicle brake lights
WO1992019468A1 (en) * 1991-04-24 1992-11-12 Philippe Jolidon Automatic hazard warning signal transmission device
DE29617438U1 (en) * 1996-10-08 1997-02-20 Staiger Juergen Emergency stop warning
GB2306063A (en) * 1995-10-10 1997-04-23 Hamel Platerink Gerard Nichola Brake system hydraulic pressure controlled motor vehicle brake light and hazard light switch
DE19638217A1 (en) * 1996-09-19 1998-03-26 Wolfgang Tesch Hazard flasher control for vehicle
FR2789953A1 (en) * 1999-02-22 2000-08-25 Serge Schlee Warning light assembly for a braking system, comprises an integral brake pressure calculator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436368A2 (en) * 1990-01-02 1991-07-10 Ian Derek Cook Road vehicle brake lights
WO1992019468A1 (en) * 1991-04-24 1992-11-12 Philippe Jolidon Automatic hazard warning signal transmission device
GB2306063A (en) * 1995-10-10 1997-04-23 Hamel Platerink Gerard Nichola Brake system hydraulic pressure controlled motor vehicle brake light and hazard light switch
DE19638217A1 (en) * 1996-09-19 1998-03-26 Wolfgang Tesch Hazard flasher control for vehicle
DE29617438U1 (en) * 1996-10-08 1997-02-20 Staiger Juergen Emergency stop warning
FR2789953A1 (en) * 1999-02-22 2000-08-25 Serge Schlee Warning light assembly for a braking system, comprises an integral brake pressure calculator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926510A1 (en) * 2008-01-23 2009-07-24 Elie Feitler VARIABLE BRAKING AND SIGNALING SYSTEM FOR A VEHICLE
FR2926511A1 (en) * 2008-01-23 2009-07-24 Elie Feitler AUTOMATIC BRAKING SYSTEM OF A VEHICLE
EP3187384A1 (en) * 2015-12-30 2017-07-05 Thunder Power New Energy Vehicle Development Company Limited Dynamic brake force indicator
US10501011B2 (en) 2015-12-30 2019-12-10 Thunder Power New Energy Vehicle Development Company Limited Dynamic brake force indicator

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