WO2000019047A1 - Method for locating a motor vehicle - Google Patents

Method for locating a motor vehicle Download PDF

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Publication number
WO2000019047A1
WO2000019047A1 PCT/EP1999/007152 EP9907152W WO0019047A1 WO 2000019047 A1 WO2000019047 A1 WO 2000019047A1 EP 9907152 W EP9907152 W EP 9907152W WO 0019047 A1 WO0019047 A1 WO 0019047A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
vehicle
unlocking
frames
receiver
Prior art date
Application number
PCT/EP1999/007152
Other languages
French (fr)
Inventor
Philippe Lefaure
Original Assignee
Siemens Automotive S.A.
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 Siemens Automotive S.A. filed Critical Siemens Automotive S.A.
Publication of WO2000019047A1 publication Critical patent/WO2000019047A1/en

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0241—Data exchange details, e.g. data protocol
    • G08B21/0247—System arrangements wherein the alarm criteria uses signal strength
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G07C2009/00198—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the keyless data carrier having more than one limited data transmission ranges
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00793—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/62—Comprising means for indicating the status of the lock
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle

Definitions

  • the present invention relates to a method for locating a motor vehicle. More particularly, it is a question of helping a driver to find the location of his vehicle when he no longer remembers exactly where he parked it. It is common, when you have parked your vehicle in a large parking lot, to no longer remember exactly where it was parked (case where the vehicle is left in an airport parking lot for several days , for example). The driver then has no other solution than to “comb through” the entire car park to find it. Such a solution is long and tedious.
  • the location of the vehicle in such a limited perimeter can however possibly be carried out by the perception of the noise caused by the unlocking of the doors.
  • the locking / unlocking remote control should be able to operate at least from fifty meters from the vehicle. However, causing a vehicle to be unlocked more than fifty meters from it is dangerous (increased theft possibilities). In addition, this actuation (noise) will not be detectable by the wearer of the remote control.
  • the object of the present invention is to create a method for locating a motor vehicle requiring few modifications to the systems currently on board a motor vehicle and making it possible to quickly find the location of a previously parked vehicle.
  • the present invention relates to a method of locating a motor vehicle, the said vehicle being provided with a remote control key suitable for sending a signal to lock / unlock the doors of the vehicle towards a receiver located at inside the vehicle, said method being characterized in that it consists in: - actuating the remote control device of the key in order to transmit a locking / unlocking signal to the receiver, said signal comprising a plurality of frames identical locking / unlocking, decrease the receiver sensitivity as soon as a first locking / unlocking frame is received, and proceed in the same way after reception of each frame, determine the number of frames received at the end of reception of the locking signal / unlocking, and depending on the number of frames received, activate the door locking / unlocking device o u a vehicle location device.
  • the reduction in the sensitivity of the receiver has an immediate consequence, namely: the further the carrier is from the vehicle, the less frames the receiver receives.
  • the receiver controls the activation of the locating means.
  • Such means are, for example, constituted by the vehicle horn, or the hazard lights, etc.
  • the receiver when the receiver receives all of the frames sent by the remote control, this means that the carrier of the remote control is in the locking / unlocking zone (10 m +/- 2 m), and in this case, these are the locking / unlocking means which are actuated.
  • the locking / unlocking signal comprises three frames.
  • the carrier of the remote control is in a first zone (for example from 100 to 200 m from the vehicle).
  • the carrier of the remote control is in a second zone (for example from 10 to 100 m).
  • the signaling means may be different.
  • the location means are constituted by the horn.
  • the wearer button on the remote control is in the second zone, the hazard warning lights are activated.
  • the present invention also relates to a location device implementing the method indicated above.
  • Other objects, characteristics and advantages of the present invention will also emerge from the description which follows, by way of nonlimiting example, with reference to the appended FIG. 1, schematically illustrating the method according to the invention.
  • the object of the method according to the invention is to materialize the location of a motor vehicle V so that its driver C is guided towards it, when it no longer remembers its location. This saves the driver from having to memorize the place where he parked his vehicle.
  • the driver has a remote control E for locking / unlocking the vehicle, of known type.
  • the range P of this remote control is determined by an adjustment means known per se.
  • This adjustment means is possibly adapted to maintain a constant range of action.
  • This adjustment means can for example be that described in European patent EP 0 563 335 (SIEMENS).
  • the range of action of the locking / unlocking device is for example fixed at 10 m +/- 2 m.
  • this locking / unlocking device is suitable for sending a locking / unlocking signal S comprising a plurality of identical frames.
  • such a signal comprises three frames. These frames are sent by the remote control key identically at the same power and are simply shifted in time. They thus follow each other at a brief interval, as soon as the holder of the remote control actuates the remote control key.
  • the receiving device R located in the vehicle, receives or does not receive the first frame. If he doesn't receive it, nothing happens. If it receives it, the sensitivity of the receiver is reduced by a predetermined value. The same is true for each of the following two frames (in the example).
  • a calculation unit associated with the receiver determines the number of frames received. If all the frames sent have been received, a command to lock / unlock the doors p of the vehicle is authorized. If one or two frames (of the three sent) have been received, the calculation unit activates the location device.
  • the hazard warning lights are activated.
  • the holder of the remote control is in an area relatively close to the vehicle (for example 10 to 100 m +/- 2 m).
  • the carrier of the remote control is in a zone more distant for example from (100 to 200 m +/- 2 m).
  • the vehicle horn is activated by the computer unit so as to draw the driver's attention to a place which may be further away and not directly visible.
  • the same location device is activated.
  • the number of proximity zones can be greater than three and in this case the number of frames sent is increased correspondingly.
  • the number of frames transmitted is predetermined (possibly in a programmable manner) and the receiver knows how many frames are normally made up of a complete signal.
  • the method according to the present invention thus consists in: - actuating the key's remote control device in order to send a locking / unlocking signal to the receiver, the said signal comprising a plurality of identical locking / unlocking frames,
  • the present invention also relates to a corresponding device implementing the location method explained above. To this end, such a device comprises:
  • a remote control key provided with an actuating means (in general, a simple push button or a deformable zone), - a transmitter of locking / unlocking signals to a receiver located in the motor vehicle, each signal being constituted a plurality of identical locking / unlocking frames,

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The invention concerns a method and a device for locating a motor vehicle (V). Said vehicle is equipped with a remote-controlled key (E) adapted to send a locking /unlocking signal to vehicle doors (P) towards a receiver (R) located inside the vehicle. The method is characterised in that it consists in: activating the key remote control device to transmit a locking/unlocking signal towards the receiver, said signal comprising a plurality of identical locking/unlocking frames; reducing the receiver sensitivity as soon as the first frame is received, and repeating the same process after receiving each frame; determining the number of frames received at the end of the locking/unlocking signal reception; on the basis of the number of frames received, activating the device for locking/unlocking the doors or a device for locating the vehicle.

Description

Procédé de localisation d'un véhicule automobile Method for locating a motor vehicle
La présente invention est relative à un procédé de localisation d'un véhicule automobile. Plus particulièrement, il s'agit d'aider un conducteur à retrouver l'emplacement de son véhicule lorsqu'il ne se souvient plus exactement de l'endroit où il l'a garé. II est fréquent, lorsque l'on a garé son véhicule dans un grand parking, de ne plus se rappeler avec exactitude de l'endroit où on l'a garé (cas où le véhicule est laissé dans un parking d'aéroport pendant plusieurs jours, par exemple). Le conducteur n'a alors pas d'autres solutions que de «passer au peigne fin » l'ensemble du parking pour le retrouver. Une telle solution est longue et fastidieuse.The present invention relates to a method for locating a motor vehicle. More particularly, it is a question of helping a driver to find the location of his vehicle when he no longer remembers exactly where he parked it. It is common, when you have parked your vehicle in a large parking lot, to no longer remember exactly where it was parked (case where the vehicle is left in an airport parking lot for several days , for example). The driver then has no other solution than to “comb through” the entire car park to find it. Such a solution is long and tedious.
Il serait intéressant de disposer, à cet effet, d'un dispositif de localisation de véhicule. Cependant, de manière à ne pas rajouter un dispositif supplémentaire à transporter par le conducteur, et comme la plupart des véhicules sont déjà munis de télécommande radio-fréquence (RF) de verrouillage/déverrouillage des portières, il est apparu opportun de confier cette fonction de localisation à ce dispositif de verrouillage/déverrouillage. A ce jour, cette télécommande RF n'assure cependant pas cette fonction. En effet, un tel dispositif ne peut qu'actionner le dispositif d'ouverture/fermeture du véhicule lorsque le porteur de la télécommande se trouve à proximité (le rayon d'action d'une telle télécommande est de l'ordre de 10 m +/- 2 m). Dans ce cas, le conducteur a déjà retrouvé son véhicule et il n'est généralement plus nécessaire de le localiser. La localisation du véhicule dans un périmètre aussi restreint (si nécessaire) peut cependant éventuellement être effectuée par la perception du bruit occasionné par le déverrouillage des portières. Pour assurer réellement une fonction de localisation du véhicule, il faudrait que la télécommande de verrouillage/déverrouillage puisse fonctionner au moins à partir d'une cinquantaine de mètres du véhicule. Or, provoquer le déverrouillage d'un véhicule à plus d'une cinquante de mètres de celui-ci est dangereux (possibilités de vols accrus). En outre, cet actionnement (bruit) ne sera pas décelable par le porteur de la télécommande.It would be interesting to have, for this purpose, a vehicle location device. However, in order not to add an additional device to be carried by the driver, and since most vehicles are already fitted with radio frequency (RF) remote control for locking / unlocking the doors, it appeared appropriate to entrust this function of location to this locking / unlocking device. To date, this RF remote control does not, however, provide this function. Indeed, such a device can only activate the vehicle's opening / closing device when the remote control carrier is nearby (the range of such remote control is around 10 m + / - 2 m). In this case, the driver has already found his vehicle and it is generally no longer necessary to locate it. The location of the vehicle in such a limited perimeter (if necessary) can however possibly be carried out by the perception of the noise caused by the unlocking of the doors. To really perform a vehicle location function, the locking / unlocking remote control should be able to operate at least from fifty meters from the vehicle. However, causing a vehicle to be unlocked more than fifty meters from it is dangerous (increased theft possibilities). In addition, this actuation (noise) will not be detectable by the wearer of the remote control.
Il est connu, d'après le document EP 0563335 (SIEMENS), d'ajuster la sensibilité et/ou la puissance d'émission du signal émis par la télécommande de manière à garantir une portée constante de cette télécommande. Un tel procédé permettrait d'augmenter la portée de la télécommande, mais comme on l'a vu précédemment, cela ne permettrait pas d'atteindre l'objectif fixé, à savoir : la localisation du véhicule à l'aide de la télécommande de verrouillage/déverrouillage. Le but de la présente invention est de créer un procédé de localisation d'un véhicule automobile nécessitant peu de modifications des systèmes couramment embarqués sur un véhicule automobile et permettant de retrouver rapidement l'emplacement d'un véhicule préalablement garé. A cet effet, la présente invention concerne un procédé de localisation d'un véhicule automobile, le dit véhicule étant muni d'une clef de télécommande adaptée pour envoyer un signal de verrouillage/déverrouillage des portières du véhicule en direction d'un récepteur situé à l'intérieur du véhicule, le dit procédé étant caractérisé en ce qu'il consiste à : - actionner le dispositif de télécommande de la clef afin d'émettre un signal de verrouillage/déverrouillage vers le récepteur, le dit signal comportant une pluralité de trames identiques de verrouillage/déverrouillage, diminuer la sensibilité du récepteur dès qu'une première trame de verrouillage/déverrouillage est reçue, et procéder de même après réception de chaque trame, déterminer le nombre de trames reçues à la fin de la réception du signal de verrouillage/déverrouillage, et en fonction du nombre de trames reçues, activer le dispositif de verrouillage/déverrouillage des portières ou un dispositif de localisation du véhicule. Ainsi, la diminution de la sensibilité du récepteur a une conséquence immédiate, à savoir : plus le porteur est loin du véhicule et moins le récepteur reçoit de trames. Dans ce cas, le récepteur commande l'activation des moyens de localisation. De tels moyens sont, par exemple, constitués par l'avertisseur sonore du véhicule, ou les feux de détresse, etc.It is known, from document EP 0563335 (SIEMENS), to adjust the sensitivity and / or the transmission power of the signal emitted by the remote control so as to guarantee a constant range of this remote control. Such a method would make it possible to increase the range of the remote control, but as we saw previously, this would not make it possible to achieve the objective set, namely: the location of the vehicle using the locking remote control / unlocking. The object of the present invention is to create a method for locating a motor vehicle requiring few modifications to the systems currently on board a motor vehicle and making it possible to quickly find the location of a previously parked vehicle. To this end, the present invention relates to a method of locating a motor vehicle, the said vehicle being provided with a remote control key suitable for sending a signal to lock / unlock the doors of the vehicle towards a receiver located at inside the vehicle, said method being characterized in that it consists in: - actuating the remote control device of the key in order to transmit a locking / unlocking signal to the receiver, said signal comprising a plurality of frames identical locking / unlocking, decrease the receiver sensitivity as soon as a first locking / unlocking frame is received, and proceed in the same way after reception of each frame, determine the number of frames received at the end of reception of the locking signal / unlocking, and depending on the number of frames received, activate the door locking / unlocking device o u a vehicle location device. Thus, the reduction in the sensitivity of the receiver has an immediate consequence, namely: the further the carrier is from the vehicle, the less frames the receiver receives. In this case, the receiver controls the activation of the locating means. Such means are, for example, constituted by the vehicle horn, or the hazard lights, etc.
Par contre, lorsque le récepteur reçoit la totalité des trames émises par la télécommande, cela signifie que le porteur de la télécommande se trouve dans la zone de verrouillage/déverrouillage (10 m +/- 2 m), et dans ce cas, ce sont les moyens de verrouillage/déverrouillage qui sont actionnés.On the other hand, when the receiver receives all of the frames sent by the remote control, this means that the carrier of the remote control is in the locking / unlocking zone (10 m +/- 2 m), and in this case, these are the locking / unlocking means which are actuated.
De préférence, le signal de verrouillage/déverrouillage comporte trois trames. Lorsque seule la première trame est perçue par le récepteur, cela signifie que le porteur de la télécommande se trouve dans une première zone (par exemple de 100 à 200 m du véhicule). Lorsque deux trames sont perçues par le récepteur, cela signifie que le porteur de la télécommande se trouve dans une deuxième zone (par exemple de 10 à 100 m). Pour chacune de ces zones, les moyens de signalisation peuvent être différents. Par exemple, lorsque le porteur de la télécommande est fortement éloigné du véhicule (première zone), les moyens de localisation sont constitués par l'avertisseur sonore. Lorsque le porteur de la télécommande se trouve dans la deuxième zone, ce sont les feux de détresse qui sont activés.Preferably, the locking / unlocking signal comprises three frames. When only the first frame is perceived by the receiver, this means that the carrier of the remote control is in a first zone (for example from 100 to 200 m from the vehicle). When two frames are perceived by the receiver, this means that the carrier of the remote control is in a second zone (for example from 10 to 100 m). For each of these zones, the signaling means may be different. For example, when the remote control carrier is far from the vehicle (first zone), the location means are constituted by the horn. When the wearer button on the remote control is in the second zone, the hazard warning lights are activated.
La présente invention concerne également un dispositif de localisation mettant en œuvre le procédé ci-dessus indiqué. D'autres objets, caractéristiques et avantages de la présente invention ressortiront d'ailleurs de la description qui suit, à titre d'exemple non limitatif, en référence à la figure 1 annexée, illustrant de manière schématique le procédé selon l'invention.The present invention also relates to a location device implementing the method indicated above. Other objects, characteristics and advantages of the present invention will also emerge from the description which follows, by way of nonlimiting example, with reference to the appended FIG. 1, schematically illustrating the method according to the invention.
L'objet du procédé, selon l'invention, est de matérialiser la localisation d'un véhicule automobile V de telle sorte que son conducteur C soit guidé vers lui, lorsqu'il ne se souvient plus de son emplacement. Ceci évite au conducteur d'avoir à mémoriser l'endroit où il a garé son véhicule.The object of the method according to the invention is to materialize the location of a motor vehicle V so that its driver C is guided towards it, when it no longer remembers its location. This saves the driver from having to memorize the place where he parked his vehicle.
A cet effet, le conducteur dispose d'une télécommande E de verrouillage/déverrouillage de véhicule, de type connu. La portée P de cette télécommande est déterminée par un moyen de réglage connu en soi. Ce moyen de réglage est éventuellement adapté pour maintenir une portée d'action constante. Ce moyen de réglage peut par exemple être celui décrit dans le brevet européen EP 0 563 335 (SIEMENS). La portée d'action du dispositif de verrouillage/déverrouillage est par exemple fixée à 10 m +/- 2 m. Selon l'invention, ce dispositif de verrouillage/déverrouillage est adapté pour envoyer un signal S de verrouillage/déverrouillage comportant une pluralité de trames identiques. De préférence, un tel signal comporte trois trames. Ces trames sont émises par la clef de télécommande de manière identique à la même puissance et sont simplement décalées dans le temps. Elles se suivent ainsi à un bref intervalle, dès que le porteur de la télécommande actionne la clef de télécommande.For this purpose, the driver has a remote control E for locking / unlocking the vehicle, of known type. The range P of this remote control is determined by an adjustment means known per se. This adjustment means is possibly adapted to maintain a constant range of action. This adjustment means can for example be that described in European patent EP 0 563 335 (SIEMENS). The range of action of the locking / unlocking device is for example fixed at 10 m +/- 2 m. According to the invention, this locking / unlocking device is suitable for sending a locking / unlocking signal S comprising a plurality of identical frames. Preferably, such a signal comprises three frames. These frames are sent by the remote control key identically at the same power and are simply shifted in time. They thus follow each other at a brief interval, as soon as the holder of the remote control actuates the remote control key.
Le dispositif récepteur R, situé dans le véhicule, reçoit ou ne reçoit pas la première trame. S'il ne la reçoit pas, rien ne se passe. S'il la reçoit, la sensibilité du récepteur est diminuée d'une valeur prédéterminée. Il en est de même pour chacune des deux trames suivantes (dans l'exemple).The receiving device R, located in the vehicle, receives or does not receive the first frame. If he doesn't receive it, nothing happens. If it receives it, the sensitivity of the receiver is reduced by a predetermined value. The same is true for each of the following two frames (in the example).
Dès que la totalité du signal de verrouillage/déverrouillage a été reçu, une unité de calcul associée au récepteur détermine le nombre de trames reçues. Si toutes les trames envoyées ont été reçues, une commande de verrouillage/déverrouillage des portières p du véhicule est autorisée. Si une ou deux trames (sur les trois envoyées) ont été reçues, l'unité de calcul actionne le dispositif de localisation.As soon as the entire locking / unlocking signal has been received, a calculation unit associated with the receiver determines the number of frames received. If all the frames sent have been received, a command to lock / unlock the doors p of the vehicle is authorized. If one or two frames (of the three sent) have been received, the calculation unit activates the location device.
Ainsi, par exemple, si deux trames ont été reçues, les feux de détresse sont activés. En effet dans ce cas, le porteur de la télécommande se trouve dans une zone relativement proche du véhicule (par exemple 10 à 100 m +/- 2 m). Par contre, si seule une trame a été reçue, le porteur de la télécommande se trouve dans une zone plus éloignée par exemple de (100 à 200 m +/- 2 m). Dans ce cas, c'est l'avertisseur sonore du véhicule qui est activé par l'unité de calcul de manière à attirer l'attention du conducteur vers un endroit qui peut être plus éloigné et non directement visible.Thus, for example, if two frames have been received, the hazard warning lights are activated. In this case, the holder of the remote control is in an area relatively close to the vehicle (for example 10 to 100 m +/- 2 m). Through on the other hand, if only one frame has been received, the carrier of the remote control is in a zone more distant for example from (100 to 200 m +/- 2 m). In this case, the vehicle horn is activated by the computer unit so as to draw the driver's attention to a place which may be further away and not directly visible.
En variante, quelle que soit la distance séparant la télécommande du véhicule, c'est le même dispositif de localisation qui est activé.As a variant, whatever the distance separating the remote control from the vehicle, the same location device is activated.
Bien entendu, le nombre de zones de proximité peut être supérieur à trois et dans ce cas le nombre de trames envoyées est augmenté en correspondance.Of course, the number of proximity zones can be greater than three and in this case the number of frames sent is increased correspondingly.
On notera que pour une télécommande donnée, le nombre de trames émises est prédéterminé (éventuellement de manière programmable) et le récepteur sait de combien de trames est normalement constitué un signal complet.It will be noted that for a given remote control, the number of frames transmitted is predetermined (possibly in a programmable manner) and the receiver knows how many frames are normally made up of a complete signal.
Le procédé selon la présente invention consiste ainsi à : - actionner le dispositif de télécommande de la clef afin d'émettre un signal de verrouillage/déverrouillage vers le récepteur, le dit signal comportant une pluralité de trames identiques de verrouillage/déverrouillage,The method according to the present invention thus consists in: - actuating the key's remote control device in order to send a locking / unlocking signal to the receiver, the said signal comprising a plurality of identical locking / unlocking frames,
- diminuer la sensibilité du récepteur dès que la première trame de verrouillage/déverrouillage est reçue, et procéder de même après réception de chaque trame,- decrease the sensitivity of the receiver as soon as the first locking / unlocking frame is received, and do the same after receiving each frame,
- déterminer le nombre de trames reçues à la fin de la réception du signal de verrouillage/déverrouillage, et en fonction du nombre de trames reçues, activer le dispositif de verrouillage/déverrouillage des portières ou un dispositif de localisation du véhicule. Bien entendu, après réception d'un signal de verrouillage/déverrouillage (même si toutes les trames n'ont pas été reçues), la sensibilité du récepteur est réajustée à sa valeur initiale. La présente invention concerne également un dispositif correspondant mettant en œuvre le procédé de localisation ci-dessus explicité. A cet effet, un tel dispositif comporte :- determine the number of frames received at the end of reception of the locking / unlocking signal, and depending on the number of frames received, activate the door locking / unlocking device or a vehicle location device. Of course, after reception of a locking / unlocking signal (even if all the frames have not been received), the sensitivity of the receiver is readjusted to its initial value. The present invention also relates to a corresponding device implementing the location method explained above. To this end, such a device comprises:
- une clef de télécommande munie d'un moyen d'actionnement (en général, un simple bouton-poussoir ou une zone déformable), - un émetteur de signaux de verrouillage/déverrouillage vers un récepteur situé dans le véhicule automobile, chaque signal étant constitué d'une pluralité de trames identiques de verrouillage/déverrouillage,- a remote control key provided with an actuating means (in general, a simple push button or a deformable zone), - a transmitter of locking / unlocking signals to a receiver located in the motor vehicle, each signal being constituted a plurality of identical locking / unlocking frames,
- un moyen de diminution de la sensibilité du récepteur dès qu'une première trame est reçue, et de même pour chaque trame ultérieure reçue, - une unité de calcul associée au récepteur, adaptée pour compter le nombre de trames reçues et, en fonction de ce nombre, adaptée pour activer le dispositif de verrouillage/déverrouillage ou pour activer un dispositif de localisation du véhicule. a means of reducing the sensitivity of the receiver as soon as a first frame is received, and likewise for each subsequent frame received, - a calculation unit associated with the receiver, adapted to count the number of frames received and, as a function of this number, adapted to activate the locking / unlocking device or to activate a device for locating the vehicle.

Claims

REVENDICATIONS
1. Procédé de localisation d'un véhicule automobile, le dit véhicule étant muni d'une clef de télécommande adaptée pour envoyer un signal de verrouillage/déverrouillage des portières du véhicule, en direction d'un récepteur situé à l'intérieur du véhicule, le dit procédé étant caractérisé en ce qu'il consiste à :1. A method of locating a motor vehicle, said vehicle being provided with a remote control key adapted to send a signal to lock / unlock the doors of the vehicle, in the direction of a receiver located inside the vehicle, said process being characterized in that it consists in:
- actionner le dispositif de télécommande de la clef afin d'émettre un signal de verrouillage/déverrouillage vers le récepteur, le dit signal comportant une pluralité de trames identiques de verrouillage/déverrouillage, - diminuer la sensibilité du récepteur dès qu'une première trame de verrouillage/déverrouillage est reçue, et procéder de même après réception de chaque trame,- activate the key's remote control device in order to send a locking / unlocking signal to the receiver, the said signal comprising a plurality of identical locking / unlocking frames, - decrease the sensitivity of the receiver as soon as a first frame of lock / unlock is received, and do the same after receiving each frame,
- déterminer le nombre de trames reçues à la fin de la réception du signal de verrouillage/déverrouillage, et - en fonction du nombre de trames reçues, activer le dispositif de verrouillage/déverrouillage des portières ou un dispositif de localisation du véhicule.- determine the number of frames received at the end of reception of the locking / unlocking signal, and - depending on the number of frames received, activate the door locking / unlocking device or a vehicle location device.
2. Procédé selon la revendication 1 , caractérisé en ce que le dispositif de localisation du véhicule est activé dès que l'ensemble des trames émises n'a pas été reçu.2. Method according to claim 1, characterized in that the vehicle location device is activated as soon as all of the transmitted frames have not been received.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le dispositif de localisation est constitué par l'activation de l'avertisseur sonore et/ou par l'activation des feux de détresse.3. Method according to claim 1 or 2, characterized in that the locating device is constituted by the activation of the horn and / or by the activation of the hazard lights.
4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le signal de verrouillage/déverrouillage du véhicule comporte trois trames.4. Method according to any one of the preceding claims, characterized in that the vehicle locking / unlocking signal comprises three frames.
5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'à la fin de la réception du signal de verrouillage/déverrouillage, la sensibilité du récepteur est réajustée à sa valeur initiale.5. Method according to any one of the preceding claims, characterized in that at the end of the reception of the locking / unlocking signal, the sensitivity of the receiver is readjusted to its initial value.
6. Dispositif de localisation mettant en œuvre le procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte :6. Locating device implementing the method according to any one of the preceding claims, characterized in that it comprises:
- une clef de télécommande munie d'un moyen d'actionnement,- a remote control key fitted with an actuation means,
- un émetteur de signaux de verrouillage/déverrouillage vers un récepteur situé dans le véhicule automobile, chaque signal étant constitué d'une pluralité de trames identiques de verrouillage/déverrouillage, - un moyen de diminution de la sensibilité du récepteur dès qu'une première trame est reçue, et de même pour chaque trame ultérieure reçue, et- a transmitter for locking / unlocking signals to a receiver located in the motor vehicle, each signal consisting of a plurality of identical locking / unlocking frames, a means for reducing the sensitivity of the receiver as soon as a first frame is received, and likewise for each subsequent frame received, and
- une unité de calcul associée au récepteur adaptée pour compter le nombre de trames reçues, et en fonction de ce nombre, adaptée pour activer le dispositif de verrouillage/déverrouillage ou pour activer un dispositif de localisation du véhicule. - a calculation unit associated with the receiver adapted to count the number of frames received, and as a function of this number, adapted to activate the locking / unlocking device or to activate a device for locating the vehicle.
PCT/EP1999/007152 1998-09-28 1999-09-24 Method for locating a motor vehicle WO2000019047A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR98/12092 1998-09-28
FR9812092A FR2783956B1 (en) 1998-09-28 1998-09-28 METHOD FOR LOCATING A MOTOR VEHICLE

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WO2000019047A1 true WO2000019047A1 (en) 2000-04-06

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629934A1 (en) * 1988-04-08 1989-10-13 Mennecier Philippe Radio remote control system suitable for signalling the location of a vehicle to its owner from any parking area
EP0563335A1 (en) 1990-12-21 1993-10-06 Siemens Ag Closure system, for example central locking system for motor vehicles.
EP0629758A1 (en) * 1993-06-21 1994-12-21 Valeo Electronique Remote control system with several functional ranges selected by means of threshold detection
EP0833026A1 (en) * 1996-09-27 1998-04-01 Valeo Electronique RF remote controls with dual functional ranges for a motor vehicle
DE19752861A1 (en) * 1996-11-29 1998-06-04 Sagem Control data emission key especially for vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629934A1 (en) * 1988-04-08 1989-10-13 Mennecier Philippe Radio remote control system suitable for signalling the location of a vehicle to its owner from any parking area
EP0563335A1 (en) 1990-12-21 1993-10-06 Siemens Ag Closure system, for example central locking system for motor vehicles.
EP0629758A1 (en) * 1993-06-21 1994-12-21 Valeo Electronique Remote control system with several functional ranges selected by means of threshold detection
EP0833026A1 (en) * 1996-09-27 1998-04-01 Valeo Electronique RF remote controls with dual functional ranges for a motor vehicle
DE19752861A1 (en) * 1996-11-29 1998-06-04 Sagem Control data emission key especially for vehicle

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FR2783956A1 (en) 2000-03-31
FR2783956B1 (en) 2000-12-08

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