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EP1422679A1 - System for preventing accidents - Google Patents

System for preventing accidents Download PDF

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Publication number
EP1422679A1
EP1422679A1 EP02405996A EP02405996A EP1422679A1 EP 1422679 A1 EP1422679 A1 EP 1422679A1 EP 02405996 A EP02405996 A EP 02405996A EP 02405996 A EP02405996 A EP 02405996A EP 1422679 A1 EP1422679 A1 EP 1422679A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
information
danger
memory
contained
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.)
Withdrawn
Application number
EP02405996A
Other languages
German (de)
French (fr)
Inventor
Thierry Racine
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP02405996A priority Critical patent/EP1422679A1/en
Priority to AU2003271506A priority patent/AU2003271506A1/en
Priority to PCT/CH2003/000711 priority patent/WO2004047045A1/en
Publication of EP1422679A1 publication Critical patent/EP1422679A1/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/09675Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where a selection from the received information takes place in the vehicle
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096783Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096791Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is another vehicle
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/16Anti-collision systems
    • G08G1/164Centralised systems, e.g. external to vehicles

Definitions

  • the present invention relates to accident prevention systems for the circulation. It relates, more particularly, to a system allowing to inform the driver of a vehicle of dangers, obstacles, anomalies, etc. of which he risks being a victim.
  • the object of the present invention is precisely to provide a system free from disadvantages reducing the advantage of the devices mentioned above.
  • the system according to the invention consists of devices, such as that shown in Figure 1, able to communicate with each other. They can be either fixed and arranged, for example, near a school, a public place, of a dangerous turn, of the place of an accident, ... either mobile and installed, for example, in an automobile, slow vehicle, ambulance, car police, fire engine, ... or carried by a pedestrian, a cyclist, ... which, for ease of description, will be described as a vehicle.
  • the device represented in FIG. 1 essentially comprises, inside a housing 10, a GPS system 11, a transceiver 12, a microprocessor 13 coupled to these two organs and associated with a memory 14.
  • An antenna 15 connects the GPS 11 and the transceiver 12 to the outside.
  • microprocessor 13 can receive, from the outside, on an input 16, information from the vehicle in which the device is installed. It is also connected, outside the housing, to a display 17 and to an alarm sound 18. Finally, an input 19 is used to connect a keyboard allowing to enter data and orders into the device.
  • FIG. 1 The configuration shown in Figure 1 is that of an installed device in a vehicle. When it is a fixed device, some of these elements are not necessary, as will appear in the rest of the description. For example, a fixed sign indicating a school does not need GPS or receiver.
  • Figure 2 represents the structure of the program animating the microprocessor 13, whether the device is fixed or mobile.
  • the first operation 30 is, on the basis data previously entered into memory 14, to determine whether is fixed or mobile.
  • the following operations are reading 31, in the internal clock of the microprocessor 13, the date and the time, then the check 32 of whether, at the present time, the memory 14 contains information regarding specific traffic restrictions in effect at this time place.
  • the device When, for example, the device is near a school, it will determine whether, to date and at this time, schoolchildren are in the around.
  • the message is then sent, in 34, typically at the rate of 4 packets per second randomly distributed in a 250 ms window, after which the system returns to the starting point to start a new cycle.
  • the first operation is, at 35, the detection of an anomaly which can either be reported by the vehicle electronics on input 16, for example, in case of strong deceleration, sudden change of direction, ignition of fog or distress, ... is received by the receiver 12 to which a terminal exterior indicated, for example, that the vehicle was traveling on the highway against sense, ...
  • the following operation 36 consists in determining whether a danger has been detected.
  • the message thus prepared is then sent in 38, in the same way as in 34, as long as the anomaly remains.
  • the program can also be stopped after a few seconds if the driver of the vehicle deactivates the device using from the keyboard or, automatically, when after a stop, the vehicle restarts.
  • the device then goes to the reception program, the first of which operation 39 consists in checking whether a message has been received.
  • the system checks, at 40, that the message concerns the vehicle because its direction risks making it meet the danger reported. The verification is made on the basis of position information and direction he received and which are specific to him. It is useless, indeed, to alert the driver of a vehicle on a danger which, of course, is close to him but that he is not likely to meet.
  • check 40 When check 40 is negative, the system returns to the starting point to start a new cycle.
  • the next operation is, at 41, determining its position and that of the source sending the message followed by the calculation of the variation of the distance between them.
  • This position determination can be done either at using the information provided by the vehicle's GPS or by measuring the reception level of the received signal.
  • the system must then, at 42, from the calculation of variation of distance carried out in 41, determine if the vehicle is approaching the danger and / or if the danger approaches him.
  • the system alerts its driver, at 43, by showing on display 17 a message corresponding to the information received and, possibly, in activating the acoustic alarm 18.
  • the following operation consists in checking, at 44, whether the received message signals a speed limit.
  • the system determines, at 45, the speed of the vehicle using its GPS or its tachometer then, at 46, determines whether the imposed speed is respected.
  • the system If the vehicle respects the set speed, the system returns to its starting point. But if there is speeding, a message warning is provided, at 47, on display 17 and / or the acoustic alarm 18, after which the system returns to its starting point.

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  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

The accident prevention circuit for motor vehicles has fixed stations or movable systems in the vehicle which communicate, each station/system having a memory and a microprocessor. The fixed stations (30) emit data from the memory relative to the presence of danger. The movable systems emit memory data and receive data from the stations for verification (39,40) of which data concerns the vehicle and displays the information (43).

Description

La présente invention se rapporte aux systèmes de prévention d'accidents de la circulation. Elle concerne, plus particulièrement, un système permettant d'informer le conducteur d'un véhicule de dangers, entraves, anomalies,.... dont il risque d'être victime.The present invention relates to accident prevention systems for the circulation. It relates, more particularly, to a system allowing to inform the driver of a vehicle of dangers, obstacles, anomalies, etc. of which he risks being a victim.

De tels systèmes ont déjà été proposés. Généralement, le conducteur du véhicule reçoit sur un écran, à sa demande ou automatiquement, avec ou sans l'aide d'un système GPS permettant de déterminer sa position, des informations concernant les problèmes de trafic dans une région donnée, la manière d'éviter les embouteillages, les zones à vitesse limitée, les stations service proches,...Such systems have already been proposed. Generally, the driver of the vehicle receives on a screen, at its request or automatically, with or without the aid of a GPS system making it possible to determine its position, information about traffic problems in a given area, the how to avoid traffic jams, limited speed areas, stations close service, ...

On remarquera toutefois que ces systèmes fournissent des informations très générales sur ce qui se passe dans un rayon donné, sans tenir compte, par exemple, de la direction du véhicule, de sa vitesse, des dangers présentés par d'autres véhicules arrêtés devant lui ou venant en sens inverse. En d'autre termes, les informations reçues ne sont pas ciblées sur la sécurité immédiate du véhicule en tenant compte de sa direction. Il est donc inutile, voire dangereux, de lui signaler un problème de circulation proche mais ne le concernant pas.Note, however, that these systems provide very general on what happens in a given radius, without taking into account, by example, vehicle direction, speed, hazards presented by other vehicles stopped in front of him or coming in the opposite direction. In in other words, the information received is not targeted at security immediately taking into account its direction. So it's useless, or even dangerous, to alert him to a nearby traffic problem but do not not about.

La présente invention a justement pour but de fournir un système exempt des inconvénients réduisant l'intérêt des dispositifs mentionnés ci-dessus.The object of the present invention is precisely to provide a system free from disadvantages reducing the advantage of the devices mentioned above.

De façon plus précise, l'invention concerne un système de prévention d'accidents constitué d'une pluralité de dispositifs, fixes ou placés dans un véhicule, capables de communiquer entre eux et comportant chacun une mémoire et un microprocesseur programmé pour commander les opérations suivantes :

  • s'il est fixe, émission d'informations, contenues dans sa mémoire, relatives à la présence d'un danger,
  • s'il est placé dans un véhicule :
  • émission d'informations, contenues dans sa mémoire et provenant du véhicule lui-même, relatives au danger présenté par ledit véhicule,
  • . réception des informations émises par d'autres dispositifs,
  • . vérification que les informations reçues concernent bien le véhicule, et
  • . affichage de ces informations.
More specifically, the invention relates to an accident prevention system consisting of a plurality of devices, fixed or placed in a vehicle, capable of communicating with each other and each comprising a memory and a microprocessor programmed to control the following operations :
  • if it is fixed, emission of information, contained in its memory, relating to the presence of a danger,
  • if placed in a vehicle:
  • emission of information, contained in its memory and coming from the vehicle itself, relating to the danger presented by said vehicle,
  • . reception of information sent by other devices,
  • . verification that the information received relates to the vehicle, and
  • . display of this information.

Le système selon l'invention présente encore les principales caractéristiques suivantes :

  • Les informations contenues dans la mémoire du dispositif fixe comprennent la nature du danger, sa position et l'attitude à adopter.
  • De préférence, ces informations comprennent, en plus, la date et l'heure auxquelles le danger est effectivement présent. Elles sont émises seulement si elles correspondent a un danger existant effectivement à l'instant présent.
  • Les informations émises contenues dans la mémoire du dispositif placé dans un véhicule comprennent, essentiellement, la nature du danger, pour chaque type de danger, son identification et, pour chaque danger identifié, les règles de sécurité à observer.
  • Les informations provenant du véhicule lui-même comprennent l'indication qu'il est en difficulté mais aussi, de préférence, l'indication qu'une faute très grave a été commise par son conducteur.
  • Les informations provenant du véhicule lui-même comprennent, en plus, sa position, sa direction et sa vitesse.
  • L'émission d'informations par le dispositif placé dans un véhicule est stoppée lorsque celui-ci passe de l'arrêt à la marche.
  • L'affichage de certaines informations par le dispositif placé dans un véhicule peut être désactivé par son conducteur.
  • L'opération de vérification des informations reçues par le dispositif placé dans un véhicule consiste à déterminer s'il s'approche effectivement du danger signalé.
  • L'opération de vérification des informations reçues par le dispositif placé dans un véhicule consiste aussi à déterminer s'il respecte la limitation de vitesse en vigueur.
The system according to the invention also has the following main characteristics:
  • The information contained in the memory of the fixed device includes the nature of the danger, its position and the attitude to adopt.
  • Preferably, this information includes, in addition, the date and time when the danger is actually present. They are issued only if they correspond to a danger actually existing at the present moment.
  • The information transmitted contained in the memory of the device placed in a vehicle essentially comprises the nature of the danger, for each type of danger, its identification and, for each identified danger, the safety rules to be observed.
  • The information coming from the vehicle itself includes the indication that it is in difficulty but also, preferably, the indication that a very serious fault has been committed by its driver.
  • Information from the vehicle itself also includes its position, direction and speed.
  • The transmission of information by the device placed in a vehicle is stopped when it goes from stop to walk.
  • The display of certain information by the device placed in a vehicle can be deactivated by its driver.
  • The operation of verifying the information received by the device placed in a vehicle consists in determining whether it is actually approaching the danger signaled.
  • The operation of verifying the information received by the device placed in a vehicle also consists in determining whether it complies with the speed limit in force.

D'autres caractéristiques de l'invention apparaítront plus clairement à la lecture de la description qui va suivre, faite en regard du dessin annexé, dans lequel :

  • la figure 1 est une représentation schématique du système selon l'invention ; et
  • la figure 2, scindée en deux parties 2a et 2b, montre la structure du programme animant les dispositifs du système, qu'ils soient fixes ou embarqués dans un véhicule.
Other characteristics of the invention will appear more clearly on reading the description which follows, made with reference to the appended drawing, in which:
  • Figure 1 is a schematic representation of the system according to the invention; and
  • Figure 2, split into two parts 2a and 2b, shows the structure of the program driving the system devices, whether fixed or embedded in a vehicle.

Le système selon l'invention est constitué de dispositifs, tels que celui représenté à la figure 1, capables de communiquer entre eux. Ils peuvent être soit fixes et disposés, par exemple, à proximité d'une école, d'un lieu public, d'un virage dangereux, du lieu d'un accident,... soit mobiles et installés, par exemple, dans une automobile, un véhicule lent, une ambulance, une voiture de police, un véhicule de pompiers,... ou portés par un piéton, un cycliste, ... qui, pour faciliter la description, sera qualifié de véhicule.The system according to the invention consists of devices, such as that shown in Figure 1, able to communicate with each other. They can be either fixed and arranged, for example, near a school, a public place, of a dangerous turn, of the place of an accident, ... either mobile and installed, for example, in an automobile, slow vehicle, ambulance, car police, fire engine, ... or carried by a pedestrian, a cyclist, ... which, for ease of description, will be described as a vehicle.

Le dispositif représenté à la figure 1 comporte essentiellement, à l'intérieur d'un boítier 10, un système GPS 11, un émetteur-récepteur 12, un microprocesseur 13 couplé à ces deux organes et associé à une mémoire 14. Une antenne 15 relie à l'extérieur le GPS 11 et l'émetteur-récepteur 12. Le microprocesseur 13 peut recevoir, de l'extérieur, sur une entrée 16, des informations provenant du véhicule dans lequel le dispositif est installé. Il est également relié, à l'extérieur du boítier, à un affichage 17 et à une alarme sonore 18. Enfin, une entrée 19 sert à connecter un clavier permettant d'introduire des données et des ordres dans le dispositif. The device represented in FIG. 1 essentially comprises, inside a housing 10, a GPS system 11, a transceiver 12, a microprocessor 13 coupled to these two organs and associated with a memory 14. An antenna 15 connects the GPS 11 and the transceiver 12 to the outside. microprocessor 13 can receive, from the outside, on an input 16, information from the vehicle in which the device is installed. It is also connected, outside the housing, to a display 17 and to an alarm sound 18. Finally, an input 19 is used to connect a keyboard allowing to enter data and orders into the device.

La configuration représentée sur la figure 1 est celle d'un dispositif installé dans un véhicule. Lorsqu'il s'agit d'un dispositif fixe, certains de ces éléments ne sont pas nécessaires, ainsi que cela apparaítra dans la suite de la description. Par exemple, une borne fixe signalant une école n'a pas besoin de GPS ni de récepteur.The configuration shown in Figure 1 is that of an installed device in a vehicle. When it is a fixed device, some of these elements are not necessary, as will appear in the rest of the description. For example, a fixed sign indicating a school does not need GPS or receiver.

On se référera maintenant à la figure 2 qui représente la structure du programme animant le microprocesseur 13, que le dispositif soit fixe ou mobile.We will now refer to Figure 2 which represents the structure of the program animating the microprocessor 13, whether the device is fixed or mobile.

Lorsque le dispositif est enclenché, la première opération 30 est, sur la base des données préalablement introduites dans la mémoire 14, de déterminer s'il est fixe ou mobile.When the device is engaged, the first operation 30 is, on the basis data previously entered into memory 14, to determine whether is fixed or mobile.

Dans le cas d'une installation fixe, les opérations suivantes sont la lecture 31, dans l'horloge interne du microprocesseur 13, de la date et de l'heure, puis la vérification 32 de si, à l'instant présent, la mémoire 14 contient des informations concernant des restrictions particulières de trafic en vigueur à cet endroit. Lorsque, par exemple, le dispositif est à proximité d'une école, il déterminera si, à ce jour et à cette heure, des écoliers se trouvent dans les parages.In the case of a fixed installation, the following operations are reading 31, in the internal clock of the microprocessor 13, the date and the time, then the check 32 of whether, at the present time, the memory 14 contains information regarding specific traffic restrictions in effect at this time place. When, for example, the device is near a school, it will determine whether, to date and at this time, schoolchildren are in the around.

Si tel est le cas, le système élabore, en 33, un message contenant, typiquement, les informations suivantes :

  • nature du danger : école, travaux, accident, virage dangereux, carrefour modifié, verglas, brouillard, manifestation, ... ;
  • attitude à adopter : ralentir, serrer à droite, ... ;
  • sa position : longitude et latitude ;
  • éventuellement, le côté de la route où se trouve le danger.
If this is the case, the system generates, at 33, a message containing, typically, the following information:
  • nature of the danger: school, work, accident, dangerous turn, modified crossroads, ice, fog, demonstration, ...;
  • attitude to adopt: slow down, tighten to the right, ...;
  • its position: longitude and latitude;
  • possibly the side of the road where the danger is.

Le message est alors émis, en 34, typiquement à raison de 4 paquets par seconde répartis de façon aléatoire dans une fenêtre de 250 ms, après quoi le système revient au point de départ pour entamer un nouveau cycle.The message is then sent, in 34, typically at the rate of 4 packets per second randomly distributed in a 250 ms window, after which the system returns to the starting point to start a new cycle.

Si, au contraire, le jour et l'heure ne correspondent pas à la présence d'un danger, le système n'émet rien et retourne directement à son point de départ. If, on the contrary, the day and time do not correspond to the presence of a danger, the system emits nothing and returns directly to its starting point.

Lorsque le dispositif a déterminé, en 30, qu'il était mobile, la première opération est, en 35, la détection d'une anomalie qui peut être soit signalée par l'électronique du véhicule sur l'entrée 16, par exemple, en cas de forte décélération, de changement brusque de direction, d'allumage des feux de brouillard ou de détresse, ... soit captée par le récepteur 12 auquel une borne extérieure a indiqué, par exemple, que le véhicule emprunte l'autoroute à contre sens, ...When the device determined, in 30, that it was mobile, the first operation is, at 35, the detection of an anomaly which can either be reported by the vehicle electronics on input 16, for example, in case of strong deceleration, sudden change of direction, ignition of fog or distress, ... is received by the receiver 12 to which a terminal exterior indicated, for example, that the vehicle was traveling on the highway against sense, ...

L'opération suivante 36 consiste à déterminer si un danger a été détecté.The following operation 36 consists in determining whether a danger has been detected.

Si tel est le cas, le système élabore, en 37, un message contenant, typiquement, les trois niveaux d'informations suivantes, décrivant les risques présentés par le véhicule :

  • nature du danger: véhicule d'urgence, véhicule en faute grave, véhicule en difficulté ;
  • pour chaque type de danger ci-dessus, identification du danger :
    • si véhicule d'urgence : véhicule de police, véhicule de pompiers, ambulance, ... ;
    • si véhicule en faute très grave : véhicule à contre sens, ... ;
    • si véhicule en difficulté : accident, freinage d'urgence, feux de brouillard, feux de détresse, véhicule au ralenti, ... ;
  • pour chaque danger identifié, instructions à suivre : laisser passer, stop, go, ralentir, serrer à droite ou à gauche, ....
If this is the case, the system elaborates, at 37, a message containing, typically, the following three levels of information, describing the risks presented by the vehicle:
  • nature of the danger: emergency vehicle, vehicle at fault, vehicle in difficulty;
  • for each type of danger above, identification of the danger:
    • if emergency vehicle: police vehicle, fire engine, ambulance, ...;
    • if vehicle in very serious fault: vehicle against direction, ...;
    • if vehicle in difficulty: accident, emergency braking, fog lights, hazard lights, idling vehicle, ...;
  • for each identified danger, instructions to follow: pass, stop, go, slow down, tighten to the right or left, ....

Pour des véhicules dotés d'équipements plus sophistiqués, le message élaboré en 37 peut encore contenir les informations suivantes :

  • direction du véhicule calculée par son GPS ou sa boussole électronique ;
  • vitesse du véhicule calculée par son GPS ou son tachymètre ;
  • position du véhicule calculée par son GPS.
For vehicles with more sophisticated equipment, the message developed in 37 may still contain the following information:
  • vehicle direction calculated by its GPS or electronic compass;
  • vehicle speed calculated by its GPS or tachometer;
  • position of the vehicle calculated by its GPS.

Le message ainsi préparé est alors émis en 38, de la même manière qu'en 34, tant que l'anomalie subsiste. L'émission peut aussi être arrêtée après quelques secondes si le conducteur du véhicule désactive le dispositif à l'aide du clavier ou, de manière automatique, lorsqu'après un arrêt, le véhicule redémarre.The message thus prepared is then sent in 38, in the same way as in 34, as long as the anomaly remains. The program can also be stopped after a few seconds if the driver of the vehicle deactivates the device using from the keyboard or, automatically, when after a stop, the vehicle restarts.

Le dispositif passe ensuite au programme de réception dont la première opération 39 consiste à vérifier si un message a été reçu.The device then goes to the reception program, the first of which operation 39 consists in checking whether a message has been received.

Lorsqu'aucune anomalie n'a été détectée en 36, le système passe immédiatement à l'opération 39.When no anomaly has been detected in 36, the system switches immediately to operation 39.

Si un message a été reçu, le système vérifie, en 40, que le message concerne bien le véhicule car sa direction risque de lui faire rencontrer le danger signalé. La vérification est faite sur la base des informations de position et de direction qu'il a reçues et qui lui sont propres. Il est inutile, en effet, d'alerter le conducteur d'un véhicule sur un danger qui, certes, est proche de lui mais qu'il ne risque pas de rencontrer.If a message has been received, the system checks, at 40, that the message concerns the vehicle because its direction risks making it meet the danger reported. The verification is made on the basis of position information and direction he received and which are specific to him. It is useless, indeed, to alert the driver of a vehicle on a danger which, of course, is close to him but that he is not likely to meet.

Lorsque la vérification 40 est négative, le système revient au point de départ pour entamer un nouveau cycle.When check 40 is negative, the system returns to the starting point to start a new cycle.

Lorsqu'au contraire, la vérification 40 confirme que le message concerne bien le véhicule, l'opération suivante est, en 41, la détermination de sa position et celle de la source qui émet le message suivie du calcul de la variation de la distance qui les sépare. Cette détermination de position peut se faire soit à l'aide des informations fournies par le GPS du véhicule soit par la mesure du niveau de réception du signal reçu.When, on the contrary, the verification 40 confirms that the message indeed concerns the vehicle, the next operation is, at 41, determining its position and that of the source sending the message followed by the calculation of the variation of the distance between them. This position determination can be done either at using the information provided by the vehicle's GPS or by measuring the reception level of the received signal.

Le système doit alors, en 42, à partir du calcul de variation de distance effectué en 41, déterminer si le véhicule s'approche du danger et/ou si le danger s'approche de lui.The system must then, at 42, from the calculation of variation of distance carried out in 41, determine if the vehicle is approaching the danger and / or if the danger approaches him.

Si le véhicule est en train de s'éloigner du danger concerné, vu qu'il est inutile d'alerter son conducteur, le système revient au point de départ pour entamer un nouveau cycle.If the vehicle is moving away from the danger concerned, since it is useless alert the driver, the system returns to the starting point to start a new cycle.

Si, au contraire, le véhicule est en train de s'approcher du danger, le système alerte son conducteur, en 43, en faisant apparaítre sur l'affichage 17 un message correspondant aux informations reçues et, éventuellement, en actionnant l'alarme acoustique 18.If, on the contrary, the vehicle is approaching the danger, the system alerts its driver, at 43, by showing on display 17 a message corresponding to the information received and, possibly, in activating the acoustic alarm 18.

L'opération suivante consiste à vérifier, en 44, si le message reçu signale une limitation de vitesse.The following operation consists in checking, at 44, whether the received message signals a speed limit.

Si ce n'est pas le cas, le système retourne à son point de départ.If not, the system returns to its starting point.

Si, en revanche, le véhicule arrive dans une zone à vitesse limitée, le système détermine, en 45, la vitesse du véhicule à l'aide de son GPS ou de son tachymètre puis, en 46, détermine si la vitesse imposée est respectée.If, on the other hand, the vehicle arrives in a limited speed zone, the system determines, at 45, the speed of the vehicle using its GPS or its tachometer then, at 46, determines whether the imposed speed is respected.

Dans le cas où le véhicule respecte la vitesse imposée, le système retourne à son point de départ. Mais s'il y a excès de vitesse, un message d'avertissement est fourni, en 47, sur l'affichage 17 et/ou l'alarme acoustique 18, après quoi le système retourne à son point de départ.If the vehicle respects the set speed, the system returns to its starting point. But if there is speeding, a message warning is provided, at 47, on display 17 and / or the acoustic alarm 18, after which the system returns to its starting point.

Il peut être intéressant, pour un conducteur habitué à un trajet, de lui laisser la possibilité d'introduire dans le dispositif de son véhicule, par le clavier branché sur l'entrée 19, les instructions de désactivation nécessaires pour ne plus être importuné par certains messages émanant de dispositifs fixes signalant, par exemple, un virage ou un carrefour dangereux.It may be advantageous for a driver accustomed to a journey to leave him the possibility of entering into the device of his vehicle, via the connected keyboard on input 19, the deactivation instructions necessary to no longer be annoyed by certain messages from fixed devices signaling, by for example, a dangerous bend or crossroads.

Ainsi est proposé un système de prévention d'accidents, mais non répressif, permettant d'établir, entre deux dispositifs mobiles ou entre un dispositif mobile et un dispositif fixe, une communication filtrée et bien adaptée à la situation de chacun. Le système selon l'invention :

  • signale seulement les vrais dangers et élimine donc les messages relatifs à des dangers proches mais dont on est en train de s'éloigner ou qu'on ne rencontrera pas ;
  • fournit une information bien ciblée, c'est-à-dire sans bruit de fond, sur la nature de ce qui est « devant » et les mesures de sécurité à prendre.
Thus an accident prevention system is proposed, but not repressive, making it possible to establish, between two mobile devices or between a mobile device and a fixed device, a filtered communication well suited to the situation of each. The system according to the invention:
  • signals only the real dangers and therefore eliminates messages relating to dangers that are close but are moving away or that we will not encounter;
  • provides well-targeted information, that is to say without background noise, on the nature of what is "in front" and the security measures to be taken.

La sécurité des usagers de la route est, de ce fait, assurée de manière optimale.The safety of road users is therefore ensured in a way optimal.

Claims (12)

Système de prévention d'accidents, caractérisé en ce qu'il est constitué d'une pluralité de dispositifs, fixes ou placés dans un véhicule, capables de communiquer entre eux et comportant chacun une mémoire et un microprocesseur programmé pour commander les opérations suivantes : s'il est fixe, émission d'informations, contenues dans sa mémoire, relatives à la présence d'un danger, s'il est placé dans un véhicule : émission d'informations, contenues dans sa mémoire et provenant du véhicule lui-même, relatives au danger présenté par ledit véhicule, réception des informations émises par d'autres dispositifs, vérification que les informations reçues concernent bien le véhicule, et affichage de ces informations. Accident prevention system, characterized in that it consists of a plurality of devices, fixed or placed in a vehicle, capable of communicating with each other and each comprising a memory and a microprocessor programmed to control the following operations: if it is fixed, emission of information, contained in its memory, relating to the presence of a danger, if placed in a vehicle: emission of information, contained in its memory and coming from the vehicle itself, relating to the danger presented by said vehicle, reception of information sent by other devices, verification that the information received relates to the vehicle, and display of this information. Système selon la revendication 1, caractérisé en ce que les informations contenues dans la mémoire du dispositif fixe comprennent la nature du danger, sa position et l'attitude à adopter.System according to claim 1, characterized in that the information contained in the memory of the fixed device includes the nature of the danger, its position and the attitude to be adopted. Système selon la revendication 2, caractérisé en ce que les informations contenues dans la mémoire du dispositif fixe comprennent, en plus, la date et l'heure auxquelles le danger est effectivement présent.System according to claim 2, characterized in that the information contained in the memory of the fixed device further comprises the date and time at which the danger is actually present. Système selon la revendication 3, caractérisé en ce que lesdites informations sont émises seulement si elles correspondent a un danger existant effectivement à l'instant présent.System according to claim 3, characterized in that said information is transmitted only if it corresponds to a danger actually existing at the present time. Système selon la revendication 1, caractérisé en ce que les informations émises contenues dans la mémoire du dispositif placé dans un véhicule comprennent : la nature du danger, pour chaque type de danger, son identification, et pour chaque danger identifié, les règles de sécurité à observer. System according to claim 1, characterized in that the information transmitted contained in the memory of the device placed in a vehicle includes: the nature of the danger, for each type of danger, its identification, and for each identified hazard, the safety rules to be observed. Système selon la revendication 5, caractérisé en ce que les informations émises provenant du véhicule lui-même comprennent l'indication qu'il est en difficulté.System according to claim 5, characterized in that the information transmitted from the vehicle itself includes the indication that it is in difficulty. Système selon la revendication 6, caractérisé en ce que les informations émises provenant du véhicule lui-même comprennent, en plus, l'indication qu'une faute très grave a été commise par son conducteur.System according to claim 6, characterized in that the information transmitted from the vehicle itself further includes the indication that a very serious fault has been committed by its driver. Système selon l'une des revendications 6 et 7, caractérisé en ce que les informations émises provenant du véhicule lui-même comprennent, en plus, sa position, sa direction et sa vitesse.System according to one of claims 6 and 7, characterized in that the information transmitted from the vehicle itself further comprises its position, its direction and its speed. Système selon la revendication 1, caractérisé en ce que l'émission d'informations par le dispositif placé dans un véhicule est stoppée lorsque celui-ci passe de l'arrêt à la marche.System according to claim 1, characterized in that the transmission of information by the device placed in a vehicle is stopped when the latter changes from stopping to walking. Système selon la revendication 1, caractérisé en ce que l'affichage de certaines informations par le dispositif placé dans un véhicule peut être désactivé par son conducteur.System according to claim 1, characterized in that the display of certain information by the device placed in a vehicle can be deactivated by its driver. Système selon la revendication 1, caractérisé en ce que l'opération de vérification des informations reçues par le dispositif placé dans un véhicule consiste à déterminer qu'il s'approche effectivement du danger signalé.System according to claim 1, characterized in that the operation of verifying the information received by the device placed in a vehicle consists in determining that it is effectively approaching the danger signaled. Système selon la revendication 11, caractérisé en ce que l'opération de vérification des informations reçues par le dispositif placé dans un véhicule consiste à déterminer s'il respecte la limitation de vitesse en vigueur.System according to claim 11, characterized in that the operation of verifying the information received by the device placed in a vehicle consists in determining whether it respects the speed limit in force.
EP02405996A 2002-11-19 2002-11-19 System for preventing accidents Withdrawn EP1422679A1 (en)

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EP02405996A EP1422679A1 (en) 2002-11-19 2002-11-19 System for preventing accidents
AU2003271506A AU2003271506A1 (en) 2002-11-19 2003-10-30 Accident prevention system
PCT/CH2003/000711 WO2004047045A1 (en) 2002-11-19 2003-10-30 Accident prevention system

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