EP0596805A1 - Remote control system for locking and unlocking doors and opening parts of a motor vehicle - Google Patents

Remote control system for locking and unlocking doors and opening parts of a motor vehicle Download PDF

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Publication number
EP0596805A1
EP0596805A1 EP93402710A EP93402710A EP0596805A1 EP 0596805 A1 EP0596805 A1 EP 0596805A1 EP 93402710 A EP93402710 A EP 93402710A EP 93402710 A EP93402710 A EP 93402710A EP 0596805 A1 EP0596805 A1 EP 0596805A1
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EP
European Patent Office
Prior art keywords
signal
passenger compartment
portable device
signals
locking
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.)
Granted
Application number
EP93402710A
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German (de)
French (fr)
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EP0596805B1 (en
Inventor
Alain Boschini
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.)
Valeo Electronique SA
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Valeo Electronique SA
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Publication date
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Publication of EP0596805A1 publication Critical patent/EP0596805A1/en
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    • 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
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • 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
    • G07C2209/63—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 system for remotely controlling the locking and unlocking of the doors and openings of a passenger compartment, in particular of a motor vehicle.
  • the purpose of such a system is to ensure locking or unlocking without the use of a mechanical key, or of any device requiring manual intervention on the part of the user.
  • the authorized drivers each have a portable device, for example in the form of a badge, ensuring communication with an on-board assembly when the wearer of the device approaches the vehicle.
  • the invention relates more precisely to such a system integrating a function for recognizing the forgetting of a device on board inside the passenger compartment. This situation occurs when the driver leaves the garment, in the pocket of which he has stored the portable device, but also when a second authorized driver has taken his place in the passenger compartment, and remains in the vehicle, or leaves his clothing in the passenger compartment after the driver's exit. It is essential that the locking and unlocking system manages its situations to prevent the driver from inadvertently locking, the device remaining locked inside the vehicle, or even inadvertent unlocking, the vehicle then offering no security against the flight.
  • the European patent EP140137 describes a system comprising an on-board transceiver assembly and a portable transceiver assembly. This document describes a solution for recognizing the situation in which the badge has been forgotten in the vehicle, consisting in measuring for a determined period the level of the signal received by the on-board receiver, and transmitted by the portable device. When the signal variations within a given period of time are less than a predetermined value, the on-board system produces an alarm signal.
  • EP426114 A second solution is known from the prior art, described in European patent application EP426114, which also consists in determining the position of a portable card-shaped device using a detector integrated into the on-board system. The position is determined not by measuring the level variation, but by using several antennas installed at different points on the vehicle, and making it possible to determine the origin of the emission, and therefore the position of the card relative to the interior of the vehicle.
  • This solution also involves the almost continuous transmission of a signal from the portable transmitter, and therefore has substantially the same drawbacks as the first solution.
  • the object of the present invention is to provide a system for detecting that the on-board device has been forgotten without resorting to prolonged transmission from the portable device, in order to reduce consumption and avoid disturbances due to variations in voltage. feed. Furthermore, a system according to the invention is compatible with a supply of the portable device by induction.
  • the portable device therefore emits, after the vehicle has stopped, a signal only for a very short time, and this essentially in the case where the portable device has been forgotten inside the passenger compartment, which constitutes a priori an exceptional situation.
  • the system according to the invention comprises a plurality of individualized portable devices, each of said portable devices emitting a signal of the second type S Pi comprising an identification sequence of the on-board device considered, in the event of detection of forgotten inside the cabin.
  • This embodiment makes it possible to identify a particular device, in the case where several conductors are each provided with a personalized device, and to temporarily deactivate the forgotten portable device, while authorizing the use of the other devices.
  • the on-board assembly emits a first signal S E1 before the doors are locked, as well as a second signal S Ever after the doors are locked.
  • the portable device comprises a memory circuit for recording the level M1 of the first signal S E1 and the level M2 of the second signal S Ever detected by the receiver, and a computer for generating a signal for activating the signal transmission sequence S Forgotten of the second type corresponding to the detection of a forgotten portable device, in the case where the difference between the two memorized levels M2, M2 is less than a predetermined value ⁇ M.
  • the on-board assembly also transmits a third signal S Etemp after a predetermined delay after the transmission of the second signal S Ever , the portable device memorizing the level M3 of said third signal S Etemp detected.
  • the computer of the portable device also controls the emission of a signal S Pixie of the second type corresponding to the detection of a forgotten device in the case where the difference between the level M2 of the second and the level M3 of the third stored signals is less at a predetermined value ⁇ M '.
  • the on-board assembly comprises means for transmitting signals, selectively by an internal antenna, placed inside the passenger compartment and whose radiation lobes are mainly confined inside the passenger compartment, by an external antenna arranged near the driver's door and whose emission lobes are mainly confined to the outside of the vehicle, and by a second external antenna (61) disposed near the door opposite to that of the driver and whose emission lobes are mainly confined outside the vehicle, the portable device emitting an S Pvid signal corresponding to the detection of the forgotten device in the event that the receiver does not detect S Eextd signals after reception of an S Ever signal of the first type corresponding to the information "Doors locked".
  • the on-board assembly also transmits signals of the first type S E1 at the time of actuation of the door handle, and in that the portable device emits a signal S Pzzi of the second type corresponding to the forgetting of the portable device when the signal S E detected at the time of reception of said actuation signal from the handle corresponds to the signal S Eint emitted by the indoor antenna.
  • the on-board assembly comprises means for transmitting signals S E1ext and S E1int at the time of closing the driver's door, the signal S E1int transmitted by the interior antenna comprising a specific coding, transmission means by the internal antenna of a second series of signals corresponding to the locking of the passenger compartment, means for transmitting, after a predetermined delay, by the external antenna provided on the driver's side of a third series of signals, and means for subsequently emitting, by the external antenna provided on the side opposite that of the driver, a fourth series of signals, and in that the portable device comprises means for generating a signal S Pvid in response to the reception of the coded signals S E1int , as well as an identification signal in response to the reception of an unencrypted signal S E.
  • the on-board assembly comprises means for interrupting the verification process when the on-board receiver receives an identification signal S P , in response to the emission of the signal emitted at the time of closing the door.
  • Figure 1 shows the block diagram of a non-limiting exemplary embodiment of the invention.
  • the system mainly comprises two sub-assemblies, a portable device (1) in the form of a badge and an on-board system (2) installed in the vehicle.
  • the badge (1) a term which will be used in the following description to designate the portable device, comprises a power source (3), for example a lithium battery. It also includes an omnidirectional antenna (4), for transmitting and receiving radio frequency signals.
  • a reception circuit (5) of known type is connected to a microprocessor circuit (6) capable of sampling the level of the signal detected by the receiver, and of recognizing the different types of signals received.
  • the microprocessor circuit (6) is connected to a random access memory (7) capable of storing digital information relating to the level of the signal received by the receiver (5).
  • the microprocessor circuit (6) also controls the transmitter (8).
  • the on-board assembly (2) also includes one or more antennas (11), housed in the passenger compartment or outside the vehicle.
  • a transmitter (12) generates a coded signal S E for the transmission of information relating to the state of the vehicle.
  • This information comes from a computer (13) receiving signals from different contacts detecting the open or closed state of the vehicle doors, the position of the locking means, the actions on the door handles, and in general any information. useful relating to the state of various parts of the vehicle.
  • This information is preferably transmitted via a serial communication BUS.
  • the on-board assembly also comprises a receiver (14) delivering signals to a computer (15) controlling the locking members, the starting control member, the audible or visual alert systems, and possibly the motorized adjustments of different parts of the vehicle requiring special adaptation to each driver referenced, for example the settings of the mirrors, the driver's seat or the height of the steering wheel.
  • FIG. 2 represents the timing diagram of the exchanges of signals between the badge (1) and the on-board assembly (2) in a so-called normal situation, in which the driver leaves his vehicle without forgetting his badge, and without a passenger n forget a badge inside the vehicle.
  • the detection of the badge forgotten in the vehicle after locking the doors is based on the measurement of the level of the signal S E received by the receiver at different times, before and after locking. These moments are chosen at times when the driver, normally wearing the badge, is a priori at different distances from the transmitting antenna. all on board.
  • the level of the signal S E measured on several consecutive messages by the computer (6) connected to the receiver (5) of the badge remains substantially constant, the badge can be considered to have remained in the passenger compartment, and it is necessary to alert in this case the driver.
  • the level measured is different, it is considered that the badge has changed position and has moved away from the passenger compartment with the driver.
  • the locking process can then continue normally.
  • the signal S E is transmitted by an indoor antenna.
  • each badge includes in a random access memory or in a read-only memory a unique specific code suitable for identifying the badge, and consequently the person to whom the badge is allocated.
  • the computer Upon reception of the signal (31) by the receiver (14) of the on-board assembly (2), the computer (15) controls the locking of the starting control member.
  • the signal (21) from a micro-sensor changes state and triggers the transmission of a coded message (33) on the interconnection BUS.
  • the computer (15) in return commands the transmission of an identification request signal (34).
  • the badge (1) Upon receipt of this signal, the badge (1) emits an identification signal (35).
  • This identification signal (35) causes the transmission on the BUS of a coded message (36) controlling the locking (37) of the doors.
  • the sensors detecting the lock trigger on the BUS a coded message activating the emission of a signal S E (38).
  • This signal is detected by the badge receiver (5) (1) and its level is digitized. This level is stored in the memory (7) in the form of information M2.
  • the two levels M1 and M2 are then compared.
  • the levels M1 and M2 are different, and the computer (6) of the badge (1) does not command emission S p .
  • the on-board transmitter After a predetermined delay of approximately one second following the reception of the coded message (39) corresponding to the release of the door handle, the on-board transmitter emits a signal giving rise to the detection by the badge (1) of a level M3.
  • the level M3 is different from M2, and consequently the transmitter (8) of the badge (1) remains inactive.
  • FIG. 3 represents the situation in which a badge has been forgotten inside the vehicle.
  • the difference between the levels M2 and M1 is in this case less than a predetermined threshold value, and consequently, the computer (6) of the badge (1) controls the emission of a signal S P.zzi (50).
  • This signal is detected by the receiver (14) of the on-board assembly (2), and the computer transmits on the BUS a coded message (51) causing the unlocking (52) and the activation of an audible alert signal. (53).
  • the on-board computer deactivates the codes identifying the badges forgotten until the next unlocking operation.
  • FIG. 4 represents a schematic view of a vehicle equipped with a system according to the second variant.
  • This variant has the advantage of allowing the instantaneous prohibition of the locking of doors when the badge is forgotten inside the passenger compartment (zones 73 and 73 '), whereas with detection by level variation measurement, the relatively long measurement time (of the order of a few seconds) imply a locking and unlocking sequence for the doors in the event of a badge being forgotten in the passenger compartment being detected.
  • the emission lobes of the interior antenna (60), the exterior antenna (61) placed on the driver's side, and the exterior antenna (62) placed on the opposite side are shown diagrammatically by hatched surfaces.
  • the external antennas (61, 62) are for example arranged in the exterior mirrors.
  • the signals received by the badge come only from the indoor antenna (60). In this case, an alert signal should be triggered, and the locking of the doors should be prevented if the doors are not yet locked, or, if the doors are already locked, the door will be unlocked.
  • the areas (73) and (73 ′) correspond to interior areas of the vehicle in which the badge receives signals from both the interior antenna (60) and one of the exterior antennas, respectively (61), (62).
  • an alert signal should be triggered, and the locking of the doors should be prevented if the doors are not yet locked, or, if the doors are already locked, the door will be unlocked.
  • the areas (74) and (74 ′) correspond to areas outside the vehicle in which the badge receives signals from both the interior antenna (60) and one of the exterior antennas, respectively (61), (62). When the badge is in this area, the doors must be locked after the badge has been identified.
  • FIG. 5 represents the flow chart of the procedure for detecting a forgotten badge according to this second variant, using antennas as shown in FIG. 4.
  • the badge includes a receiver and a computer triggering the emission of an identification signal comprising a code specific to the badge considered in response to a signal from the on-board transmitter, or the emission of a signal corresponding to the situation forgetting the badge if the signal from the on-board transmitter has a specific coding sequence, whatever the antenna excited by the on-board transmitter.
  • the badge If the badge detects specific code sequences transmitted by the internal antenna (60), it responds that it is forgotten by a signal S forgetfulness.
  • the on-board transmitter transmits, via the internal antenna, an S Eint signal comprising a specific sequence as well as a coded S Eext signal via the external antennas (61, 62).
  • the badge is in the interior area (73)
  • its receiver receives the S Eint signal including the sequence specific identifying the indoor antenna (60) as well as the signal S ext of the outdoor antenna (61)
  • the badge computer calculates in return the transmission of a signal comprising coded information corresponding to the forgetting of the badge inside the vehicle.
  • the on-board computer prevents the doors from locking and activates an audible or visual alert signal.
  • the computer controls the transmission of a signal comprising a badge identification sequence, and in response, the on-board computer controls the locking of the doors, then orders the emission of a new signal S Eint by the interior antenna (60), without specific code. If the badge responds with an identification signal, it is considered to have remained inside the vehicle and the on-board computer causes the doors to be unlocked, and an audible or visual alert to be triggered.
  • the on-board computer commands the emission of an S Eextg signal without specific sequence, approximately 10 seconds after locking the doors, via the external antenna on the driver's side (62) only. If the badge responds with an identification signal, the on-board computer triggers the audible or visual alert. If the driver does not unlock the doors, the on-board computer deactivates the badge.
  • the on-board computer controls the emission of another signal S Eextd without specific sequence, by means of the exterior antenna (61) on the passenger side only.
  • the on-board computer triggers the audible or visual alert. The detection procedure is finished.
  • the zones (74, 74 ') are zones where the badge is rarely found. If it is there, this would simply lead to false detection without affecting the safety of the vehicle.
  • the skilled person will be able to make various variants without departing from the scope of the invention.
  • the nature of the signals is not limited to radio signals.

Abstract

The present invention relates to a system for remotely controlling the locking and the unlocking of a passenger compartment, especially of a motor vehicle, of the type including - an on-board assembly (2) including a transmitter (12) of signals SE of a first type and a receiver (14) of signals SP or a second type, - a portable device (1) including a receiver (5) of signals SE of the first type and a transmitter (8) of signals SP of the second type, - the system further including means for detecting that a portable device has been left within the passenger compartment by mistake, by determining the relative position of the portable device (1) with respect to the interior of the passenger compartment, characterised in that the means for determining the position of the portable device (1) with respect to the interior of the passenger compartment are incorporated into the portable device (1), the said means (6) causing the transmission by the transmitter (8) of the portable device (1) of a signal Spforgotten of the second type in the event of detection that the portable device (1) has been left by mistake within the passenger compartment. <IMAGE>

Description

La présente invention concerne un système pour commander à distance le verrouillage et le déverrouillage des portes et des ouvrants d'un habitacle, notamment d'un véhicule automobile. Le but d'un tel système est d'assurer le verrouillage ou le déverrouillage sans l'utilisation d'une clé mécanique, ni d'aucun dispositif nécessitant une intervention manuelle de la part de l'utilisateur. Les conducteurs autorisés disposent chacun d'un dispositif portable, par exemple sous la forme d'un badge, assurant la communication avec un ensemble embarqué lorsque le porteur du dispositif s'approche du véhicule.The present invention relates to a system for remotely controlling the locking and unlocking of the doors and openings of a passenger compartment, in particular of a motor vehicle. The purpose of such a system is to ensure locking or unlocking without the use of a mechanical key, or of any device requiring manual intervention on the part of the user. The authorized drivers each have a portable device, for example in the form of a badge, ensuring communication with an on-board assembly when the wearer of the device approaches the vehicle.

L'invention concerne plus précisément un tel système intégrant une fonction de reconnaissance de l'oubli d'un dispositif embarqué à l'intérieur de l'habitacle. Cette situation se produit lorsque le conducteur laisse le vêtement, dans la poche duquel il a rangé le dispositif portable, mais aussi lorsqu'un deuxième conducteur autorisé a pris place dans l'habitacle à titre de passager, et reste dans le véhicule, ou laisse son vêtement dans l'habitacle après la sortie du conducteur. Il est indispensable que le système de verrouillage et de déverrouillage gère ses situations pour éviter au conducteur un verrouillage inopportun, le dispositif restant enfermé à l'intérieur du véhicule, ou encore un déverrouillage inopportun, le véhicule n'offrant alors plus aucune sécurité contre le vol.The invention relates more precisely to such a system integrating a function for recognizing the forgetting of a device on board inside the passenger compartment. This situation occurs when the driver leaves the garment, in the pocket of which he has stored the portable device, but also when a second authorized driver has taken his place in the passenger compartment, and remains in the vehicle, or leaves his clothing in the passenger compartment after the driver's exit. It is essential that the locking and unlocking system manages its situations to prevent the driver from inadvertently locking, the device remaining locked inside the vehicle, or even inadvertent unlocking, the vehicle then offering no security against the flight.

On connaît dans l'état de la technique une première solution pour répondre à cet objectif. Le brevet européen EP140137 décrit un système comprenant un ensemble émetteur-récepteur embarqué et un ensemble émetteur-récepteur portatif. Ce document décrit une solution pour reconnaître la situation dans laquelle le badge a été oublié dans le véhicule, consistant à mesurer pendant une période déterminée le niveau du signal reçu par le récepteur embarqué, et émis par le dispositif portatif. Lorsque les variations de signal à l'intérieur d'une période de temps donnée sont inférieures à une valeur prédéterminée, le système embarqué produit un signal d'alarme.A first solution is known in the state of the art to meet this objective. The European patent EP140137 describes a system comprising an on-board transceiver assembly and a portable transceiver assembly. This document describes a solution for recognizing the situation in which the badge has been forgotten in the vehicle, consisting in measuring for a determined period the level of the signal received by the on-board receiver, and transmitted by the portable device. When the signal variations within a given period of time are less than a predetermined value, the on-board system produces an alarm signal.

Cette solution n'est pas totalement satisfaisante car elle implique l'émission d'un signal par l'émetteur du dispositif embarqué pendant une durée relativement longue, de plusieurs secondes. Il en résulte une consommation d'énergie significative, et implique l'utilisation de source d'énergie électrique puissante allant à l'encontre de la recherche de la miniaturisation et de la réduction du poids. Par ailleurs, une telle solution est fortement dépendante de la stabilité du niveau d'émission, et peut être perturbée par les variations dues à des baisses de la tension d'alimentation, lorsque les batteries du dispositif portatif sont usées.This solution is not entirely satisfactory because it involves the emission of a signal by the transmitter of the on-board device for a relatively long period, of several seconds. This results in significant energy consumption, and involves the use of a powerful source of electrical energy that goes against the quest for miniaturization and weight reduction. Furthermore, such a solution is highly dependent on the stability of the emission level, and can be disturbed by variations due to drops in the supply voltage, when the batteries of the portable device are exhausted.

Enfin, dans le cas où plusieurs badges restent dans le rayon d'action, chaque badge doit être géré de façon séquentielle, ce qui complique notablement le système.Finally, in the event that several badges remain within the operating range, each badge must be managed sequentially, which considerably complicates the system.

On connaît dans l'état de la technique une deuxième solution décrite dans la demande de brevet européen EP426114 qui consiste également à déterminer la position d'un dispositif portatif en forme de carte à l'aide d'un détecteur intégré au système embarqué. La détermination de la position se fait non pas par mesure de la variation du niveau, mais par l'utilisation de plusieurs antennes installées en des points différents du véhicule, et permettant de déterminer l'origine de l'émission, et donc la position de la carte par rapport à l'intérieur du véhicule.A second solution is known from the prior art, described in European patent application EP426114, which also consists in determining the position of a portable card-shaped device using a detector integrated into the on-board system. The position is determined not by measuring the level variation, but by using several antennas installed at different points on the vehicle, and making it possible to determine the origin of the emission, and therefore the position of the card relative to the interior of the vehicle.

Cette solution implique également l'émission quasiment continue d'un signal à partir de l'émetteur portatif, et présente donc sensiblement les mêmes inconvénients que la première solution.This solution also involves the almost continuous transmission of a signal from the portable transmitter, and therefore has substantially the same drawbacks as the first solution.

L'objet de la présente invention est de proposer un système permettant de détecter l'oubli du dispositif embarqué sans recourir à une émission prolongée depuis le dispositif portatif, afin de réduire la consommation, d'éviter les perturbations dues à des variations de la tension d'alimentation. Par ailleurs, un système selon l'invention est compatible avec une alimentation du dispositif portatif par induction.The object of the present invention is to provide a system for detecting that the on-board device has been forgotten without resorting to prolonged transmission from the portable device, in order to reduce consumption and avoid disturbances due to variations in voltage. feed. Furthermore, a system according to the invention is compatible with a supply of the portable device by induction.

A cet effet, le système selon l'invention est composé de :

  • un ensemble embarqué comportant un émetteur de signaux SE d'un premier type et un récepteur de signaux SP d'un second type ;
  • un dispositif portatif comportant un récepteur de signaux SE du premier type et un émetteur de signaux SP du second type ;
  • le système comportant en outre des moyens pour détecter l'oubli d'un dispositif portable à l'intérieur de l'habitacle par la détermination de la position relative du dispositif portable par rapport à l'intérieur de l'habitacle. Afin de répondre aux objectifs de l'invention, les moyens pour déterminer la position du dispositif portatif par rapport à l'intérieur de l'habitacle sont intégrés au dispositif portatif, lesdits moyens générant un signal commandant l'émission par l'émetteur du dispositif portable d'un signal SPoubli du second type en cas de détection de l'oubli du dispositif portatif à l'intérieur de l'habitacle.
To this end, the system according to the invention is composed of:
  • an on-board assembly comprising a signal transmitter S E of a first type and a receiver of signals S P of a second type;
  • a portable device comprising a signal receiver S E of the first type and a signal transmitter S P of the second type;
  • the system further comprising means for detecting the forgetting of a portable device inside the passenger compartment by determining the relative position of the portable device relative to the interior of the passenger compartment. In order to meet the objectives of the invention, the means for determining the position of the portable device relative to the interior of the passenger compartment are integrated into the portable device, said means generating a signal controlling the emission by the transmitter of the device. portable of an S Poubli signal of the second type in case of detection of forgetting the portable device inside the passenger compartment.

Le dispositif portatif n'émet donc, après l'arrêt du véhicule, un signal que pendant une durée très brève, et ce essentiellement dans le cas où le dispositif portatif a été oublié à l'intérieur de l'habitacle, ce qui constitue à priori une situation d'exception.The portable device therefore emits, after the vehicle has stopped, a signal only for a very short time, and this essentially in the case where the portable device has been forgotten inside the passenger compartment, which constitutes a priori an exceptional situation.

Dans ce qui suit, le système est exposé en relation avec le verrouillage et déverrouillage d'un véhicule, mais il est bien entendu que le même système pourrait être mis en oeuvre pour d'autres applications, par exemple dans le domaine de la domotique ou du contrôle d'accès dans des sites protégés.In what follows, the system is exposed in relation to the locking and unlocking of a vehicle, but it is understood that the same system could be implemented for other applications, for example in the field of home automation or access control in protected sites.

Selon un mode de réalisation préféré, le système selon l'invention comporte une pluralité de dispositifs portatifs individualisés, chacun desdits dispositifs portatifs émettant un signal du second type SPi comportant une séquence d'identification du dispositif embarqué considéré, en cas de détection d'oubli à l'intérieur de l'habitacle. Ce mode de réalisation permet d'identifier un dispositif particulier, dans le cas où plusieurs conducteurs sont munis chacun d'un dispositif personnalisé, et de désactiver provisoirement le dispositif portatif oublié, tout en autorisant l'utilisation des autres dispositifs.According to a preferred embodiment, the system according to the invention comprises a plurality of individualized portable devices, each of said portable devices emitting a signal of the second type S Pi comprising an identification sequence of the on-board device considered, in the event of detection of forgotten inside the cabin. This embodiment makes it possible to identify a particular device, in the case where several conductors are each provided with a personalized device, and to temporarily deactivate the forgotten portable device, while authorizing the use of the other devices.

Selon une première variante, l'ensemble embarqué émet un premier signal SE1 antérieurement au verrouillage des portes, ainsi qu'un deuxième signal SEver postérieurement au verrouillage des portes. Le dispositif portatif comporte un circuit à mémoires pour enregistrer le niveau M₁ du premier signal SE1 et le niveau M₂ du second signal SEver détecté par le récepteur, et un calculateur pour générer un signal d'activation de la séquence d'émission de signaux SPoubli du second type correspondant à la détection de dispositif portatif oublié, dans le cas où la différence entre les deux niveaux M₁, M₂ mémorisés est inférieure à une valeur ∂M prédéterminée.According to a first variant, the on-board assembly emits a first signal S E1 before the doors are locked, as well as a second signal S Ever after the doors are locked. The portable device comprises a memory circuit for recording the level M₁ of the first signal S E1 and the level M₂ of the second signal S Ever detected by the receiver, and a computer for generating a signal for activating the signal transmission sequence S Forgotten of the second type corresponding to the detection of a forgotten portable device, in the case where the difference between the two memorized levels M₂, M₂ is less than a predetermined value ∂M.

Avantageusement, l'ensemble embarqué émet en outre un troisième signal SEtemp au bout d'un délai prédéterminé après l'émission du second signal SEver, le dispositif portatif mémorisant le niveau M₃ dudit troisième signal SEtemp détecté. Le calculateur du dispositif portatif commande également l'émission d'un signal SPoubli du second type correspondant à la détection d'un dispositif oublié dans le cas où la différence entre le niveau M₂ du second et le niveau M₃ du troisième signaux mémorisés est inférieure à une valeur prédéterminée ∂M'.Advantageously, the on-board assembly also transmits a third signal S Etemp after a predetermined delay after the transmission of the second signal S Ever , the portable device memorizing the level M₃ of said third signal S Etemp detected. The computer of the portable device also controls the emission of a signal S Poubli of the second type corresponding to the detection of a forgotten device in the case where the difference between the level M₂ of the second and the level M₃ of the third stored signals is less at a predetermined value ∂M '.

Selon une deuxième variante, l'ensemble embarqué comporte des moyens d'émission de signaux, de façon sélective par une antenne intérieure, placée à l'intérieur de l'habitacle et dont les lobes de rayonnement sont principalement confinés à l'intérieur de l'habitacle, par une antenne extérieure disposée à proximité de la porte du conducteur et dont les lobes d'émission sont principalement confinés à l'extérieur du véhicule, et par une deuxième antenne extérieure (61) disposée à proximité de la porte opposée à celle du conducteur et dont les lobes d'émission sont principalement confinés à l'extérieur du véhicule, le dispositif portatif émettant un signal SPoubli correspondant à la détection du dispositif oublié dans le cas où le récepteur ne détecte pas de signaux SEextd après la réception d'un signal SEver du premier type correspondant à l'information "Portes verrouillées".According to a second variant, the on-board assembly comprises means for transmitting signals, selectively by an internal antenna, placed inside the passenger compartment and whose radiation lobes are mainly confined inside the passenger compartment, by an external antenna arranged near the driver's door and whose emission lobes are mainly confined to the outside of the vehicle, and by a second external antenna (61) disposed near the door opposite to that of the driver and whose emission lobes are mainly confined outside the vehicle, the portable device emitting an S Poubli signal corresponding to the detection of the forgotten device in the event that the receiver does not detect S Eextd signals after reception of an S Ever signal of the first type corresponding to the information "Doors locked".

Selon un mode de mise en oeuvre particulier de cette deuxième variante, l'ensemble embarqué émet en outre des signaux du premier type SE1 au moment de l'actionnement de la poignée de porte, et en ce que le dispositif portatif émette un signal SPoubli de second type correspondant à l'oubli du dispositif portatif lorsque le signal SE détecté au moment de la réception dudit signal d'actionnement de la poignée correspond au signal SEint émit par l'antenne intérieure.According to a particular mode of implementation of this second variant, the on-board assembly also transmits signals of the first type S E1 at the time of actuation of the door handle, and in that the portable device emits a signal S Poubli of the second type corresponding to the forgetting of the portable device when the signal S E detected at the time of reception of said actuation signal from the handle corresponds to the signal S Eint emitted by the indoor antenna.

Avantageusement, l'ensemble embarqué comporte des moyens d'émission de signaux SE1ext et SE1int au moment de la fermeture de la portière du conducteur, le signal SE1int transmis par l'antenne intérieure comportant un codage spécifique, des moyens d'émission par l'antenne intérieure d'une deuxième série de signaux correspondant au verrouillage de l'habitacle, des moyens pour émettre, après un délai prédéterminé, par l'antenne extérieure prévue du coté du conducteur d'une troisième série de signaux, et des moyens pour émettre postérieurement, par l'antenne extérieure prévue du coté opposé à celui du conducteur une quatrième série de signaux, et en ce que le dispositif portatif comporte des moyens pour générer un signal SPoubli en réponse à la réception du signaux codé SE1int, ainsi qu'un signal d'identification en réponse à la réception d'un signal SE non codé.Advantageously, the on-board assembly comprises means for transmitting signals S E1ext and S E1int at the time of closing the driver's door, the signal S E1int transmitted by the interior antenna comprising a specific coding, transmission means by the internal antenna of a second series of signals corresponding to the locking of the passenger compartment, means for transmitting, after a predetermined delay, by the external antenna provided on the driver's side of a third series of signals, and means for subsequently emitting, by the external antenna provided on the side opposite that of the driver, a fourth series of signals, and in that the portable device comprises means for generating a signal S Poubli in response to the reception of the coded signals S E1int , as well as an identification signal in response to the reception of an unencrypted signal S E.

Selon un mode préféré, l'ensemble embarqué comporte des moyens pour interrompre le processus de vérification lorsque le récepteur embarqué reçoit un signal d'identification SPidentif, en réponse à l'émission du signal émit au moment de la fermeture de la portière.According to a preferred mode, the on-board assembly comprises means for interrupting the verification process when the on-board receiver receives an identification signal S P , in response to the emission of the signal emitted at the time of closing the door.

L'invention sera mieux comprise à la lecture de la description qui suit, faisant référence aux dessins annexés où:
   - la figure 1 représente le schéma de principe du système selon l'invention ;
   la figure 2 représente le chronogramme du système selon la première variante, dans une situation normale;

  • la figure 3 représente le chronogramme du système selon la première variante, dans une situation d'oubli du dispositif portable à l'intérieur du véhicule ;
  • la figure 4 représente le diagramme de rayonnement des antennes mises en oeuvre dans le système selon la deuxième variante;
  • la figure 5 représente l'organigramme de la procédure mise en oeuvre dans un système selon la deuxième variante.
The invention will be better understood on reading the description which follows, referring to the accompanying drawings in which:
- Figure 1 shows the block diagram of the system according to the invention;
FIG. 2 represents the timing diagram of the system according to the first variant, in a normal situation;
  • FIG. 3 represents the timing diagram of the system according to the first variant, in a situation of forgetfulness of the portable device inside the vehicle;
  • FIG. 4 represents the radiation diagram of the antennas used in the system according to the second variant;
  • FIG. 5 represents the flow chart of the procedure implemented in a system according to the second variant.

La figure 1 représente le schéma de principe d'un exemple de réalisation non limitatif de l'invention.Figure 1 shows the block diagram of a non-limiting exemplary embodiment of the invention.

Le système comporte principalement deux sous-ensembles, un dispositif portatif (1) en forme de badge et un système embarqué (2) installé dans le véhicule.The system mainly comprises two sub-assemblies, a portable device (1) in the form of a badge and an on-board system (2) installed in the vehicle.

Le badge (1), terme qui sera utilisé dans la suite de la description pour désigner le dispositif portatif, comporte une source d'alimentation (3), par exemple une pile au lithium. Il comporte par ailleurs une antenne (4) omnidirectionnelle, pour l'émission et la réception de signaux radio-fréquence. Un circuit de réception (5) de type connu est relié à un circuit à microprocesseur (6) susceptible d'échantillonner le niveau du signal détecté par le récepteur, et de reconnaître les différents types de signaux reçus.The badge (1), a term which will be used in the following description to designate the portable device, comprises a power source (3), for example a lithium battery. It also includes an omnidirectional antenna (4), for transmitting and receiving radio frequency signals. A reception circuit (5) of known type is connected to a microprocessor circuit (6) capable of sampling the level of the signal detected by the receiver, and of recognizing the different types of signals received.

Le circuit à microprocesseur (6) est relié à une mémoire vive (7) susceptible de mémoriser les informations numériques relatives au niveau du signal reçu par le récepteur (5). Le circuit à microprocesseur (6) pilote par ailleurs l'émetteur (8).The microprocessor circuit (6) is connected to a random access memory (7) capable of storing digital information relating to the level of the signal received by the receiver (5). The microprocessor circuit (6) also controls the transmitter (8).

L'ensemble embarqué (2) comporte également une ou plusieurs antennes (11), logée dans l'habitacle ou à l'extérieur du véhicule. Un émetteur (12) génère un signal codé SE pour la transmission d'informations relatives à l'état du véhicule. Ces informations proviennent d'un calculateur (13) recevant des signaux provenant de différents contacts détectant l'état ouvert ou fermé des portes du véhicule, la position des moyens de verrouillage, les actions sur les poignées des portes, et de façon générale toute information utile relative à l'état de différents organes du véhicule. Ces informations sont de préférence transmises par l'intermédiaire d'un BUS de communication série.The on-board assembly (2) also includes one or more antennas (11), housed in the passenger compartment or outside the vehicle. A transmitter (12) generates a coded signal S E for the transmission of information relating to the state of the vehicle. This information comes from a computer (13) receiving signals from different contacts detecting the open or closed state of the vehicle doors, the position of the locking means, the actions on the door handles, and in general any information. useful relating to the state of various parts of the vehicle. This information is preferably transmitted via a serial communication BUS.

L'ensemble embarqué comporte par ailleurs un récepteur (14) délivrant des signaux à un calculateur (15) commandant les organes de verrouillage, l'organe de commande de démarrage, les systèmes d'alertes sonores ou visuels, et éventuellement les réglages motorisés de différents organes du véhicules nécessitant une adaptation particulière à chaque conducteur référencé, par exemple les réglages des rétroviseurs, du siège du conducteur ou de la hauteur du volant.The on-board assembly also comprises a receiver (14) delivering signals to a computer (15) controlling the locking members, the starting control member, the audible or visual alert systems, and possibly the motorized adjustments of different parts of the vehicle requiring special adaptation to each driver referenced, for example the settings of the mirrors, the driver's seat or the height of the steering wheel.

La figure 2 représente le chronogramme des échanges de signaux entre le badge (1) et l'ensemble embarqué (2) dans une situation dite normale, dans laquelle le conducteur sort de son véhicule sans oublier son badge, et sans qu'un passager n'oublie un badge à l'intérieur du véhicule.FIG. 2 represents the timing diagram of the exchanges of signals between the badge (1) and the on-board assembly (2) in a so-called normal situation, in which the driver leaves his vehicle without forgetting his badge, and without a passenger n forget a badge inside the vehicle.

La détection du badge oublié dans le véhicule après le verrouillage des portes est basée sur la mesure du niveau du signal SE reçu par le récepteur à différents instants, avant et après le verrouillage. Ces instants sont choisis à des moments où le conducteur, normalement porteur du badge, est à priori à des distances différentes de l'antenne d'émission de l'ensemble embarqué. Lorsque le niveau du signal SE mesuré sur plusieurs messages consécutifs par le calculateur (6) relié au récepteur (5) du badge reste sensiblement constant, le badge peut être considéré comme étant resté dans l'habitacle, et il est nécessaire d'alerter dans ce cas le conducteur. Par contre, si le niveau mesuré est différent, on considère que le badge a changé de position et s'est éloigné de l'habitacle avec le conducteur. Le processus de verrouillage peut alors se poursuivre normalement. Dans cette première variante, le signal SE est transmis par une antenne intérieure.The detection of the badge forgotten in the vehicle after locking the doors is based on the measurement of the level of the signal S E received by the receiver at different times, before and after locking. These moments are chosen at times when the driver, normally wearing the badge, is a priori at different distances from the transmitting antenna. all on board. When the level of the signal S E measured on several consecutive messages by the computer (6) connected to the receiver (5) of the badge remains substantially constant, the badge can be considered to have remained in the passenger compartment, and it is necessary to alert in this case the driver. On the other hand, if the level measured is different, it is considered that the badge has changed position and has moved away from the passenger compartment with the driver. The locking process can then continue normally. In this first variant, the signal S E is transmitted by an indoor antenna.

Le chronogramme faisant l'objet des figures 2 et 3 représente différentes signaux électriques:

  • le signal (20) représente le signal détecté sur le contact d'ouverture de la porte du conducteur ;
  • le signal (21) correspond au signal détecté sur un capteur, un micro contacteur ou un détecteur optique prévu sur la poignée de la porte du conducteur ;
  • le signal (22) représente l'enveloppe des messages codés circulant sur le BUS d'interconnexion de l'ensemble embarqué (2) avec les différents capteurs équipant le véhicule ;
  • le signal (23) représente l'enveloppe des séquences d'émission SE émises par l'émetteur de l'ensemble embarqué (2) ;
  • le signal (24) représente l'enveloppe des séquences d'émission SP émises par l'émetteur du badge (1) ;
  • le signal (25) représente les signaux de commande des organes de verrouillage et de sécurité du véhicule.
The timing diagram shown in Figures 2 and 3 represents different electrical signals:
  • the signal (20) represents the signal detected on the driver's door opening contact;
  • the signal (21) corresponds to the signal detected on a sensor, a microswitch or an optical detector provided on the handle of the driver's door;
  • the signal (22) represents the envelope of the coded messages circulating on the interconnection BUS of the on-board assembly (2) with the various sensors fitted to the vehicle;
  • the signal (23) represents the envelope of the transmission sequences S E transmitted by the transmitter of the on-board assembly (2);
  • the signal (24) represents the envelope of the transmission sequences S P transmitted by the transmitter of the badge (1);
  • the signal (25) represents the control signals of the locking and safety members of the vehicle.

Lors de l'ouverture de la porte du conducteur, le signal (20) provenant d'un contacteur change d'état, et déclenche l'émission d'un message codé (30) sur le BUS (22). Le calculateur (12) de l'ensemble embarqué (2) provoque l'émission d'un signal SE détecté par le récepteur (5) du badge (1). Le calculateur (6) du badge (1) échantillonne le signal reçu et enregistre dans la mémoire EEPROM (7) une information M₁ correspondant au niveau du signal reçu. Par ailleurs, il déclenche l'émission d'une impulsion codée (31) SP comportant une séquence d'identification du badge considéré. A cet effet, chaque badge comporte dans une mémoire vive ou dans une mémoire morte un code spécifique unique propre à identifier le badge, et en conséquence la personne à qui le badge est attribué.When the driver's door is opened, the signal (20) from a contactor changes state, and triggers the transmission of a coded message (30) on the BUS (22). The computer (12) of the on-board assembly (2) causes the emission of a signal S E detected by the receiver (5) of the badge (1). The computer (6) of the badge (1) samples the received signal and stores in the EEPROM memory (7) information M au corresponding to the level of the received signal. Furthermore, it triggers the emission of a coded pulse (31) S P comprising a sequence for identifying the badge considered. For this purpose, each badge includes in a random access memory or in a read-only memory a unique specific code suitable for identifying the badge, and consequently the person to whom the badge is allocated.

A la réception du signal (31) par le récepteur (14) de l'ensemble embarqué (2), le calculateur (15) commande le verrouillage de l'organe de commande de démarrage.Upon reception of the signal (31) by the receiver (14) of the on-board assembly (2), the computer (15) controls the locking of the starting control member.

Lors de l'appui sur la poignée de la porte du conducteur, le signal (21) provenant d'un micro-capteur change d'état et déclenche l'émission d'un message codé (33) sur le BUS d'interconnexion. Le calculateur (15) commande en retour l'émission d'un signal de demande d'identification (34). A la réception de ce signal, le badge (1) émet un signal d'identification (35).When the handle on the driver's door is pressed, the signal (21) from a micro-sensor changes state and triggers the transmission of a coded message (33) on the interconnection BUS. The computer (15) in return commands the transmission of an identification request signal (34). Upon receipt of this signal, the badge (1) emits an identification signal (35).

La réception de ce signal d'identification (35) provoque la transmission sur le BUS d'un message codé (36) commandant le verrouillage (37) des portes.The reception of this identification signal (35) causes the transmission on the BUS of a coded message (36) controlling the locking (37) of the doors.

Lorsque le verrouillage des portes est effectué, les capteurs détectant le verrouillage déclenchent sur le BUS un message codé activant l'émission d'un signal SE (38). Ce signal est détecté par le récepteur (5) du badge (1) et son niveau est numérisé. Ce niveau est stocké dans la mémoire (7) sous forme d'une information M₂.When the doors are locked, the sensors detecting the lock trigger on the BUS a coded message activating the emission of a signal S E (38). This signal is detected by the badge receiver (5) (1) and its level is digitized. This level is stored in the memory (7) in the form of information M₂.

Les deux niveaux M₁ et M₂ sont ensuite comparés. Dans l'exemple représenté en figure 2, les niveaux M₁ et M₂ sont différents, et le calculateur (6) du badge (1) ne commande pas d'émission Sp.The two levels M₁ and M₂ are then compared. In the example shown in FIG. 2, the levels M₁ and M₂ are different, and the computer (6) of the badge (1) does not command emission S p .

Après un délai prédéterminé d'environ une seconde suivant la récéption du message codé (39) correspondant au relâchement de la poignée de la porte, l'émetteur embarqué émet un signal donnant lieu à la détection par le badge (1) d'un niveau M₃. Dans l'exemple représenté en figure 2 correspondant à une situation normale, le niveau M₃ est différent de M₂, et en conséquence l'émetteur (8) du badge (1) reste inactif.After a predetermined delay of approximately one second following the reception of the coded message (39) corresponding to the release of the door handle, the on-board transmitter emits a signal giving rise to the detection by the badge (1) of a level M₃. In the example shown in FIG. 2 corresponding to a normal situation, the level M₃ is different from M₂, and consequently the transmitter (8) of the badge (1) remains inactive.

La figure 3 représente le situation dans laquelle un badge a été oublié à l'intérieur du véhicule.FIG. 3 represents the situation in which a badge has been forgotten inside the vehicle.

La différence entre les niveaux M₂ et M₁ est dans ce cas inférieure à une valeur-seuil prédéterminée, et en conséquence, le calculateur (6) du badge (1) commande l'émission d'un signal SP.oubli (50). Ce signal est détecté par le récepteur (14) de l'ensemble embarqué (2), et le calculateur transmet sur le BUS un message codé (51) provoquant le déverrouillage (52) et l'activation d'un signal d'alerte sonore (53).The difference between the levels M₂ and M₁ is in this case less than a predetermined threshold value, and consequently, the computer (6) of the badge (1) controls the emission of a signal S P.oubli (50). This signal is detected by the receiver (14) of the on-board assembly (2), and the computer transmits on the BUS a coded message (51) causing the unlocking (52) and the activation of an audible alert signal. (53).

Dans le cas où plusieurs personnes disposent chacune d'un badge personnalisé, et oublient leur badge dans le véhicule, et que le conducteur a quitté le véhicule sans oublier son badge, le calculateur embarqué (15) désactive les codes identifiant les badges oubliés jusqu'à l'opération de déverrouillage suivante.In the case where several people each have a personalized badge, and forget their badge in the vehicle, and the driver has left the vehicle without forgetting his badge, the on-board computer (15) deactivates the codes identifying the badges forgotten until the next unlocking operation.

La figure 4 représente une vue schématique d'un véhicule équipé d'un système selon la deuxième variante.FIG. 4 represents a schematic view of a vehicle equipped with a system according to the second variant.

Cette variante présente l'intérêt de permettre l'interdiction instantanée du verrouillage des portes lorsque le badge est oublié à l'intérieur de l'habitacle (zones 73 et 73'), alors qu'avec la détection par mesure de variation de niveau, le temps de mesure relativement important (de l'ordre de quelques secondes) impliquent une séquence de verrouillage-déverrouillage des portes en cas de détection d'un badge oublié dans l'habitacle.This variant has the advantage of allowing the instantaneous prohibition of the locking of doors when the badge is forgotten inside the passenger compartment (zones 73 and 73 '), whereas with detection by level variation measurement, the relatively long measurement time (of the order of a few seconds) imply a locking and unlocking sequence for the doors in the event of a badge being forgotten in the passenger compartment being detected.

Les lobes d'émission de l'antenne intérieure (60), de l'antenne extérieure (61) placée du coté du conducteur, et de l'antenne extérieure (62) placée du coté opposé sont schématisés par des surfaces hachurées. Les antennes extérieures (61, 62) sont par exemple disposées dans les rétroviseurs extérieurs.The emission lobes of the interior antenna (60), the exterior antenna (61) placed on the driver's side, and the exterior antenna (62) placed on the opposite side are shown diagrammatically by hatched surfaces. The external antennas (61, 62) are for example arranged in the exterior mirrors.

Dans la zone (71), seuls les signaux SEextg provenant de l'antenne extérieure (61) du coté du conducteur sont reçus. Lorsque le badge se trouve dans cette zone, il convient d'autoriser le verrouillage des portes après l'identification du badge.In the zone (71), only the signals S Eextg coming from the external antenna (61) on the driver's side are received. When the badge is in this area, the doors must be locked after the badge has been identified.

Dans la zone (71'), seuls les signaux SEextd provenant de l'antenne extérieure (62) du coté du passager sont reçus. Lorsque le badge se trouve dans cette zone, il convient d'autoriser le verrouillage des portes après l'identification du badge.In the area (71 '), only the signals S Eextd coming from the external antenna (62) on the passenger side are received. When the badge is in this area, the doors must be locked after the badge has been identified.

Dans la zone (72), les signaux reçus par le badge proviennent uniquement de l'antenne intérieure (60). Dans ce cas, il convient de déclencher un signal d'alerte, et d'empêcher le verrouillage des portes si les portes ne sont pas encore verrouillées, ou, si les portes sont déjà verrouillées, de provoquer le déverrouillage.In the area (72), the signals received by the badge come only from the indoor antenna (60). In this case, an alert signal should be triggered, and the locking of the doors should be prevented if the doors are not yet locked, or, if the doors are already locked, the door will be unlocked.

Les zones (73) et (73') correspondent à des zones intérieures du véhicule dans lesquelles le badge reçoit des signaux provenant à la fois de l'antenne intérieure (60) et de l'une des antennes extérieures, respectivement (61), (62).The areas (73) and (73 ′) correspond to interior areas of the vehicle in which the badge receives signals from both the interior antenna (60) and one of the exterior antennas, respectively (61), (62).

Dans ce cas, il convient de déclencher un signal d'alerte, et d'empêcher le verrouillage des portes si les portes ne sont pas encore verrouillées, ou, si les portes sont déjà verrouillées, de provoquer le déverrouillage.In this case, an alert signal should be triggered, and the locking of the doors should be prevented if the doors are not yet locked, or, if the doors are already locked, the door will be unlocked.

Les zones (74) et (74') correspondent à des zones extérieures au véhicule dans lesquelles le badge reçoit des signaux provenant à la fois de l'antenne intérieure (60) et de l'une des antennes extérieures, respectivement (61), (62). Lorsque le badge se trouve dans cette zone, il convient d'autoriser le verrouillage des portes après l'identification du badge.The areas (74) and (74 ′) correspond to areas outside the vehicle in which the badge receives signals from both the interior antenna (60) and one of the exterior antennas, respectively (61), (62). When the badge is in this area, the doors must be locked after the badge has been identified.

La figure 5 représente l'organigramme de la procédure de détection de badge oublié selon cette deuxième variante, mettant en oeuvre des antennes comme représenté dans la figure 4.FIG. 5 represents the flow chart of the procedure for detecting a forgotten badge according to this second variant, using antennas as shown in FIG. 4.

Le badge comporte un récepteur et un calculateur déclenchant l'émission d'un signal d'identification comportant un code propre au badge considéré en réponse à un signal provenant de l'émetteur embarqué, ou l'émission d'un signal correspondant à la situation d'oubli de badge si le signal provenant de l'émetteur embarqué comporte une séquence de codage spécifique, et ce quelque soit l'antenne excitée par l'émetteur embarqué.The badge includes a receiver and a computer triggering the emission of an identification signal comprising a code specific to the badge considered in response to a signal from the on-board transmitter, or the emission of a signal corresponding to the situation forgetting the badge if the signal from the on-board transmitter has a specific coding sequence, whatever the antenna excited by the on-board transmitter.

Si le badge détecte des séquences codées spécifiques transmis par l'antenne intérieure (60), il répond qu'il est oublié par un signal Soubli.If the badge detects specific code sequences transmitted by the internal antenna (60), it responds that it is forgotten by a signal S forgetfulness.

Au moment de l'appui sur la poignée de porte, l'émetteur embarqué émet, par l'intermédiaire de l'antenne intérieure un signal SEint comportant une séquence spécifique ainsi qu'un signal codé SEext par l'intermédiaire des antennes extérieures (61, 62). Si le badge se trouve dans la zone intérieure (73), son récepteur reçoit le signal SEint comportant la séquence spécifique identifiant l'antenne intérieure (60) ainsi que le signal Sext de l'antenne extérieure (61), et le calculateur du badge commande en retour l'émission d'un signal comportant une information codée correspondant à l'oubli du badge à l'intérieur du véhicule. Dans ce cas, le calculateur embarqué empêche le verrouillage des portes et active un signal d'alerte sonore ou visuel.When the door handle is pressed , the on-board transmitter transmits, via the internal antenna, an S Eint signal comprising a specific sequence as well as a coded S Eext signal via the external antennas (61, 62). If the badge is in the interior area (73), its receiver receives the S Eint signal including the sequence specific identifying the indoor antenna (60) as well as the signal S ext of the outdoor antenna (61), and the badge computer calculates in return the transmission of a signal comprising coded information corresponding to the forgetting of the badge inside the vehicle. In this case, the on-board computer prevents the doors from locking and activates an audible or visual alert signal.

Dans le cas où le badge se trouve dans la zone (71) ou (71') où il ne reçoit que le signal SEext provenant de l'une des antennes extérieures (61, 62), le calculateur commande l'émission d'un signal comportant une séquence d'identification du badge, et en réponse, le calculateur embarqué commande le verrouillage des portes, puis commande l'émission d'un nouveau signal SEint par l'antenne intérieure (60), sans code spécifique. Si le badge répond par un signal d'identification, il est considéré comme étant resté à l'intérieur du véhicule et le calculateur embarqué provoque le déverrouillage des portes, et le déclenchement d'une alerte sonore ou visuelle.In the case where the badge is in the zone (71) or (71 ') where it receives only the signal S Eext coming from one of the external antennas (61, 62), the computer controls the transmission of a signal comprising a badge identification sequence, and in response, the on-board computer controls the locking of the doors, then orders the emission of a new signal S Eint by the interior antenna (60), without specific code. If the badge responds with an identification signal, it is considered to have remained inside the vehicle and the on-board computer causes the doors to be unlocked, and an audible or visual alert to be triggered.

Dans le cas où le badge se trouve dans l'une des zones (75), (75'), et où la configuration des lobes des antennes (60, 61, 62) conduit à l'existence de telles zones, le calculateur embarqué commande l'émission d'un signal SEextg sans séquence spécifique, environ 10 secondes après le verrouillage des portes, par l'intermédiaire de l'antenne extérieure du coté du conducteur (62) uniquement. Si le badge répond par un signal d'identification, le calculateur embarqué déclenche l'alerte sonore ou visuelle. Si le conducteur ne déverrouille pas les portes, le calculateur embarqué désactive le badge.In the case where the badge is located in one of the zones (75), (75 '), and where the configuration of the antenna lobes (60, 61, 62) leads to the existence of such zones, the on-board computer commands the emission of an S Eextg signal without specific sequence, approximately 10 seconds after locking the doors, via the external antenna on the driver's side (62) only. If the badge responds with an identification signal, the on-board computer triggers the audible or visual alert. If the driver does not unlock the doors, the on-board computer deactivates the badge.

Dans le cas contraire, le calculateur embarqué commande l'émission d'un autre signal SEextd sans séquence spécifique, par l'intermédiaire de l'antenne extérieure (61) du coté du passager uniquement.Otherwise, the on-board computer controls the emission of another signal S Eextd without specific sequence, by means of the exterior antenna (61) on the passenger side only.

Si le badge répond par un signal d'identification, le calculateur embarqué déclenche l'alerte sonore ou visuelle. La procédure de détection est terminée.If the badge responds with an identification signal, the on-board computer triggers the audible or visual alert. The detection procedure is finished.

L'existence d'une séquence complémentaire de demandes d'identification 10 secondes après le verrouillage des portes, correspondant aux étapes incluses dans la zone hachurée de la figure 5, aboutit toutefois dans certains cas à de fausses détections de badge oublié, lorsque le conducteur reste près de la porte, le badge étant bien dans sa poche, après le verrouillage des portes. Ces fausses détections, bien qu'inopportune, ne mettent toutefois pas en cause la sécurité du système selon cette variante.The existence of a complementary sequence of identification requests 10 seconds after the doors have been locked, corresponding to the steps included in the hatched area of FIG. 5, however, in certain cases, leads to false detections of a forgotten badge, when the driver stays close to the door, the badge being in his pocket, after locking the doors. These false detections, although inappropriate, do not however jeopardize the security of the system according to this variant.

Les zones (74, 74') sont des zones où le badge se trouve rarement. Au cas où il s'y trouve, ceci conduirait simplement à une fausse détection sans incidence sur la sécurité du véhicule.The zones (74, 74 ') are zones where the badge is rarely found. If it is there, this would simply lead to false detection without affecting the safety of the vehicle.

Il est bien entendu que l'Homme de métier sera à même de réaliser diverses variantes sans pour autant sortir du cadre de l'invention. En particulier, la nature des signaux n'est pas limités à des signaux hertziens. De même, il est possible d'utiliser diverses solutions pour détecter la position relative du badge par rapport à l'intérieur du véhicule, ou plus généralement d'un habitacle, sans pour autant sortir du cadre de l'invention.It is understood that the skilled person will be able to make various variants without departing from the scope of the invention. In particular, the nature of the signals is not limited to radio signals. Similarly, it is possible to use various solutions for detecting the relative position of the badge relative to the interior of the vehicle, or more generally of a passenger compartment, without thereby departing from the scope of the invention.

Claims (9)

1 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle, notamment d'un véhicule automobile, du type comportant - un ensemble embarqué (2) comportant un émetteur (12) de signaux SE d'un premier type et un récepteur (14) de signaux SP d'un second type, - un dispositif portatif (1) comportant un récepteur (5) de signaux SE du premier type et un émetteur (8) de signaux SP du second type, - le système comportant en outre des moyens pour détecter l'oubli d'un dispositif portable à l'intérieur de l'habitacle par la détermination de la position relative du dispositif portatif (1) par rapport à l'intérieur de l'habitacle, caractérisé en ce que les moyens pour déterminer la position du dispositif portatif (1) par rapport à l'intérieur de l'habitacle sont intégrés au dispositif portatif (1), lesdits moyens (6) commandant l'émission par l'émetteur (8) du dispositif portatif (1) d'un signal Spoubli du second type en cas de détection de l'oubli du dispositif portatif (1) à l'intérieur de l'habitacle. 1 - System for remotely controlling the locking and unlocking of a passenger compartment, in particular of a motor vehicle, of the type comprising - an on-board assembly (2) comprising a transmitter (12) of signals S E of a first type and a receiver (14) of signals S P of a second type, - a portable device (1) comprising a receiver (5) of signals S E of the first type and a transmitter (8) of signals S P of the second type, the system further comprising means for detecting the forgetting of a portable device inside the passenger compartment by determining the relative position of the portable device (1) relative to the interior of the passenger compartment, characterized in that the means for determining the position of the portable device (1) relative to the interior of the passenger compartment are integrated into the portable device (1), said means (6) controlling the transmission by the transmitter (8 ) of the portable device (1) of a signal S poubli of the second type in case of detection of the forgetting of the portable device (1) inside the passenger compartment. 2 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle selon la revendication 1 caractérisé en ce qu'il comporte une pluralité de dispositifs portatifs (1) individualisés, chacun desdits dispositifs portatifs émettant un signal du second type SPi comportant une séquence d'identification du dispositif portatif (1) considéré en cas de détection d'oubli à l'intérieur de l'habitacle. 2 - System for remotely controlling the locking and unlocking of a passenger compartment according to claim 1 characterized in that it comprises a plurality of portable devices (1) individualized, each of said portable devices emitting a signal of the second type S Pi comprising a sequence of identification of the portable device (1) considered in the event of detection of forgetting inside the passenger compartment. 3 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle selon l'une quelconque des revendications précédentes caractérisé en ce que l'ensemble embarqué (2) émet un premier signal SE1 antérieurement au verrouillage des portes, ainsi qu'un deuxième signal SEver postérieurement au verrouillage des portes, et en ce que le dispositif portatif (1) comporte une mémoire (7) pour enregistrer le niveau M₁ du premier signal SE1 et le niveau M₂ du second signal SEver détecté par le récepteur, et un calculateur (6) pour générer un signal d'activation de la séquence d'émission de signaux Spoubli du second type correspondant à la détection de dispositif portatif (1) oublié dans le cas où la différence entre les deux niveaux M₁, M₂ mémorisés est inférieure à une valeur ∂M prédéterminée. 3 - System for remotely controlling the locking and unlocking of a passenger compartment according to any one of the preceding claims, characterized in that the on-board assembly (2) emits a first signal S E1 before the doors are locked, as well as a second signal S Ever after the doors are locked, and in that the device portable (1) comprises a memory (7) for recording the level M₁ of the first signal S E1 and the level M₂ of the second signal S Ever detected by the receiver, and a computer (6) for generating a signal for activating the sequence transmission of signals S poubli of the second type corresponding to the detection of portable device (1) forgotten in the case where the difference between the two levels M₁, M₂ memorized is less than a predetermined value ∂M. 4 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle selon la revendication 3 caractérisé en ce que l'ensemble embarqué (2) émette en outre un troisième signal SEtemp au bout d'un délai prédéterminée après l'émission du second signal SEver, le dispositif embarqué mémorisant le niveau M₃ dudit troisième signal SEtemp détecté et le calculateur du dispositif portatif (1) commandant l'émission d'un signal SPoubli du second type correspondant à la détection d'un dispositif oublié dans le cas où la différence entre le niveau M₂ du second et le niveau M₃ du troisième signaux mémorisés est inférieure à une valeur prédéterminée ∂M'. 4 - System for remotely controlling the locking and unlocking of a passenger compartment according to claim 3 characterized in that the on-board assembly (2) also transmits a third signal S Etemp after a predetermined delay after transmission of the second signal S Ever , the on-board device memorizing the level M₃ of said third signal S Etemp detected and the computer of the portable device (1) controlling the emission of a signal S Poubli of the second type corresponding to the detection of a forgotten device in the case where the difference between the level M₂ of the second and the level M₃ of the third stored signals is less than a predetermined value ∂M '. 5 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle selon l'une quelconque des revendications 1 à 2 caractérisé en ce que l'ensemble embarqué (2) comporte des moyens d'émission de signaux de façon sélective par une antenne intérieure (60) placée à l'intérieur de l'habitacle et dont les lobes de rayonnement sont principalement confinés à l'intérieur de l'habitacle, par une antenne extérieure (62) disposée à proximité de la porte du conducteur et dont les lobes d'émission sont principalement confinés à l'extérieur du véhicule, et par une deuxième antenne extérieure (61) disposée à proximité de la porte opposée à celle du conducteur et dont les lobes d'émission sont principalement confinés à l'extérieur du véhicule, le dispositif portatif (1) émettant un signal SPoubli correspondant à la détection du dispositif oublié dans le cas où le récepteur ne détecte pas de signaux SEextd après la réception d'un signal SEver du premier type correspondant à l'information "Portes verrouillées". 5 - System for remotely controlling the locking and unlocking of a passenger compartment according to any one of claims 1 to 2 characterized in that the on-board assembly (2) comprises means for transmitting signals selectively by a interior antenna (60) placed inside the passenger compartment and whose radiation lobes are mainly confined inside the passenger compartment, by an external antenna (62) disposed near the driver's door and whose emission lobes are mainly confined outside the vehicle, and by a second external antenna (61) disposed near the door opposite to that of the driver and whose emission lobes are mainly confined to the outside of the vehicle, the portable device (1) emitting a signal S Poubli corresponding to the detection of the forgotten device in the event that the receiver does not detect S Eextd signals after reception of an S Ever signal of the first type corresponding to the information "Doors locked". 6 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle selon la revendication 5 caractérisé en ce que l'ensemble embarqué (2) émette en outre des signaux du premier type SE1 au moment de l'actionnement de la poignée de porte, et en ce que le dispositif portatif (1) émette un signal SPoubli de second type correspondant à l'oubli du dispositif portatif (1) lorsque le signal SE détecté au moment de la réception dudit signal d'actionnement de la poignée correspond au signal SEint émit par l'antenne intérieure (60) 6 - System for remotely controlling the locking and unlocking of a passenger compartment according to claim 5 characterized in that the on-board assembly (2) also emits signals of the first type S E1 at the time of actuation of the handle door, and in that the portable device (1) emits a signal S Poubli of the second type corresponding to the forgetting of the portable device (1) when the signal S E detected at the time of reception of said actuation signal from the handle corresponds to the signal S Eint emitted by the indoor antenna (60) 7 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle selon l'une quelconque des revendications 5 ou 6 caractérisé en ce que l'ensemble embarqué (2) comporte des moyens d'émission de signaux SE1ext et SE1int au moment de la fermeture de la portière du conducteur, le signal SE1int transmis par l'antenne intérieure (60) comportant un codage spécifique, des moyens d'émission par l'antenne intérieure d'une deuxième série de signaux correspondant au verrouillage de l'habitacle, des moyens pour émettre après un délai prédéterminé par l'antenne extérieure (62) prévue du coté du conducteur d'une troisième série de signaux, et des moyens pour émettre postérieurement, par l'antenne extérieure (61) prévue du coté opposé à celui du conducteur une quatrième série de signaux, et en ce que le dispositif portatif (1) comporte des moyens pour générer un signal SPoubli en réponse à la réception du signaux codés SE1int, ainsi qu'un signal d'identification en réponse à la réception d'un signal SE non codé. 7 - System for remotely controlling the locking and unlocking of a passenger compartment according to any one of claims 5 or 6 characterized in that the on-board assembly (2) comprises means for transmitting signals S E1ext and S E1int when the driver's door is closed, the signal S E1int transmitted by the interior antenna (60) comprising a specific coding, means of transmission by the antenna interior of a second series of signals corresponding to the locking of the passenger compartment, means for transmitting after a predetermined delay by the external antenna (62) provided on the driver's side of a third series of signals, and means for transmitting later, by the external antenna (61) provided on the side opposite to that of the driver, a fourth series of signals, and in that the portable device (1) comprises means for generating a signal S Poubli in response to the reception of the signals coded S E1int , as well as an identification signal in response to the reception of an uncoded S E signal. 8 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle selon la revendication 7 caractérisé en ce que l'ensemble embarqué (2) comporte des moyens pour interrompre le processus de verrouillage et pour activer un signal d'alerte lorsqu'il reçoit un signal SPoubli en réponse à l'émission du signal codé SEint, et des moyens pour provoquer le déverrouillage et pour activer un signal d'alerte lorsque le récepteur embarqué reçoit un signal d'identification SPidentif. en réponse à l'émission du signal SE non codé. 8 - System for remotely controlling the locking and unlocking of a passenger compartment according to claim 7 characterized in that the on-board assembly (2) comprises means for interrupting the locking process and for activating an alert signal when it receives a signal S Poubli in response to the transmission of the coded signal S Eint , and means for causing the unlocking and for activating an alert signal when the on-board receiver receives an identification signal S Pidentif. in response to the transmission of the unencoded signal S E. 9 - Système pour commander à distance le verrouillage et le déverrouillage d'un habitacle selon la revendication 8 caractérisé en ce que l'ensemble embarqué (2) comporte des moyens pour interrompre le processus de vérification lorsque le récepteur embarqué reçoit un signal d'identification SPidenti, en réponse à l'émission du signal émit au moment de la fermeture de la portière. 9 - System for remotely controlling the locking and unlocking of a passenger compartment according to claim 8 characterized in that the on-board assembly (2) comprises means for interrupting the verification process when the on-board receiver receives an identification signal S Pidenti , in response to the signal emitted when the door was closed.
EP93402710A 1992-11-06 1993-11-04 Remote control system for locking and unlocking doors and opening parts of a motor vehicle Expired - Lifetime EP0596805B1 (en)

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FR9213421A FR2697864B1 (en) 1992-11-06 1992-11-06 System for remotely controlling the locking and unlocking of the doors and openings of a passenger compartment, in particular of a motor vehicle.
FR9213421 1992-11-06

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EP0596805B1 EP0596805B1 (en) 1998-02-04

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JP (1) JP3407955B2 (en)
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US8284020B2 (en) * 2009-12-22 2012-10-09 Lear Corporation Passive entry system and method for a vehicle
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EP0741221A1 (en) * 1995-05-03 1996-11-06 Ford Motor Company Transmitter direction identifier
US5710548A (en) * 1995-05-03 1998-01-20 Ford Motor Company Transmitter direction identifier
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FR2791728A1 (en) * 1999-04-02 2000-10-06 Valeo Securite Habitacle DEVICE FOR SECURING AN ACCESS SYSTEM PROVIDED WITH AN IDENTIFICATION MEANS AND AN IDENTIFIER, FOR A MOTOR VEHICLE
US6765471B1 (en) 1999-04-02 2004-07-20 Valeo Securite Habitacle Device for improving the security of an access system equipped with an identification means and an identifier, for a motor vehicle
EP1050641A1 (en) * 1999-05-07 2000-11-08 Valeo Securité Habitacle Locking method for a motor vehicle and device for its implementation
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FR2697864B1 (en) 1995-01-06
JPH06207484A (en) 1994-07-26
DE69316830T2 (en) 1998-05-20
DE69316830D1 (en) 1998-03-12
US5499022A (en) 1996-03-12
ES2113508T3 (en) 1998-05-01
FR2697864A1 (en) 1994-05-13
JP3407955B2 (en) 2003-05-19
EP0596805B1 (en) 1998-02-04

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