EP1735755B1 - Procede pour condamner automatiquement des ouvrants d'un vehicule automobile - Google Patents

Procede pour condamner automatiquement des ouvrants d'un vehicule automobile Download PDF

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Publication number
EP1735755B1
EP1735755B1 EP05717066A EP05717066A EP1735755B1 EP 1735755 B1 EP1735755 B1 EP 1735755B1 EP 05717066 A EP05717066 A EP 05717066A EP 05717066 A EP05717066 A EP 05717066A EP 1735755 B1 EP1735755 B1 EP 1735755B1
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EP
European Patent Office
Prior art keywords
level
period
signal
received
inquiry
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Application number
EP05717066A
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German (de)
English (en)
French (fr)
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EP1735755A1 (fr
Inventor
Marc c/o VALEO SECURITE HABITACLE RANIER
José c/o VALEO SECURITE HABITACLE ROBINEAU
Patrick c/o VALEO SECURITE HABITACLE MOLIN
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 Comfort and Driving Assistance SAS
Original Assignee
Valeo Securite Habitacle SAS
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Publication of EP1735755A1 publication Critical patent/EP1735755A1/fr
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Classifications

    • 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
    • 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
    • G07C2009/00317—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 keyless data carrier having only one limited data transmission range
    • G07C2009/00333—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 keyless data carrier having only one limited data transmission range and the lock 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

Definitions

  • the present invention relates to a method for automatically locking the opening of a motor vehicle equipped with a hands-free system comprising an identification device located on the vehicle and a portable identification device.
  • the purpose of the invention is notably to limit the duration of such a method by detecting as soon as possible a disappearance of the mobile identifier device.
  • the hands-free system allows a person equipped with an identifying device corresponding to a vehicle to enter the vehicle.
  • a triggering element such as the presence of a hand on a handle detected by a sensor associated with the detection of the presence of the identifying device, may cause an unlocking of the vehicle doors.
  • the person with the portable identifier device stops the vehicle engine and away from a distance, it is known to automatically condemn the vehicle. By automatically condemn, it is intended to lock the doors and put the electronic circuits of this vehicle to sleep.
  • the identification device comprises a radiofrequency transmitter capable of transmitting interrogation signals to the identification device and a radio frequency receiver capable of receiving response signals transmitted by the identification device.
  • the identifying device comprises a transmitter and a radio frequency receiver capable respectively of receiving the interrogation signals and of transmitting the response signals. These interrogation and response signals are transmitted in at least one frequency band.
  • the identification device To carry out a judgment of the vehicle, the identification device periodically sends the interrogation signals which are detectable by the identifying device in a given search area. Thus, when the identifying device is in the search area, the latter detects the interrogation signals and sends back one or more response signals. These response signals make it possible to validate the presence of an authorized user in the search zone located near the vehicle, and therefore not to condemn the vehicle. On the other hand, when no response signal is detected by the identification device, the identifier device is deemed to be absent and the vehicle can then be sentenced.
  • the period between two emissions of an interrogation signal is constant, of the order of one second or more. More precisely, this period separating two transmissions is constant regardless of where the identifying device is located within the search area.
  • a detection of a disappearance of the identifier is performed at the moment when an expected response signal corresponding to an emitted interrogation signal is not detected by the device.
  • a duration of detection of disappearance is therefore equal, in the worst case, to the period between the emission of two successive interrogation signals. The fact that this period is constant has drawbacks and in particular results in a too long duration of the conviction process.
  • the document EP1088716 discloses a method of detecting the removal of the identifying device to condemn the opening of the vehicle, wherein a plurality of detection areas of the identifier are defined.
  • the period between two transmissions of an interrogation signal is constant in a given detection zone and the period between two transmissions increases in the most remote detection zones.
  • the detection time of the disappearance of the identifier is therefore equal to the period between the transmission of two successive interrogation signals.
  • the invention proposes to reduce the duration of the method of condemning such a method, by reducing the detection time of the disappearance of the identifying device.
  • the period between the emission of two successive interrogation signals depends directly on the distance of the identifying device from the vehicle. The closer the identifying device is to the vehicle, the greater the period of issue of the interrogation signals. The more the identifying device moves away from the vehicle, the shorter this period.
  • the physical quantity of the signals relative to the distance separating the identifying device from the identification device, or from the vehicle, is the level of the interrogation signals detected by the identifying device. Indeed, the further the identification device is away from the identification device, the lower the level of the interrogation signals detected. The closer the identifier device is to the identification device, the higher this level is.
  • the transmission period separating two transmissions from an interrogation signal varies as a function of the measurement of the level of the interrogation signals received by the identifying device.
  • the invention therefore relates to a method of automatically locking the doors of a motor vehicle (100) according to independent claim 1.
  • the figure 1 shows a motor vehicle 100 equipped with a hands-free system.
  • This hands-free system comprises an identification device 101 located inside a passenger compartment 103 of the vehicle and an identifying device 102 located outside the vehicle 100. These devices 101 and 102 exchange electromagnetic I and R signals. in a search zone Z.
  • the identification device 102 transmits the interrogation signals by means of an antenna 104. If the interrogation signals received by the identifying device 102 are greater than a detection threshold of a receiver of the device 102 identifying, the device 102 identifier detects these interrogation signals I and sends back R response signals to the device 101 identification. The interrogation I signals received are detected by the device 102 identifying when the latter is located inside the search zone Z.
  • the detection threshold is inherent to the receiver of the identifying device 102 and a user can not modify it. This detection threshold characterizes the sensitivity of the device 102 identifier.
  • a periodic transmission phase P corresponds to interrogation signal transmissions I when the identifying device 102 is present inside the search zone Z, that is to say when a response signal R is detected by the identification device 101.
  • a phase V of validation of a disappearance of the device 102 identifier is performed when the device 101 no longer detects response signals. This phase V is intended to ensure that the device 102 identifying has actually disappeared from the Z search area.
  • the identifier device 102 measures the level of the interrogation signals I receives. The more the measurement information corresponds to a low interrogation signal level, the shorter the periodic emission period. In other words, the interrogation frequency is increased to the identifying device when the level of the interrogation signals received by the identifying device decreases.
  • the response signal R emitted by the identifying device 102 includes measurement information corresponding to the measurement of the level of the signals I received.
  • this information can take two values. A first value M1 reveals that the level of the interrogation signals I received is greater than a threshold S of distance and a second value M2 reveals that the level of the interrogation signals I is below the threshold S of distance.
  • This distance threshold S corresponds to a level of a given received interrogation signal I, for which the device 102 identifying is located at a given distance from the vehicle or more precisely from the identification device 101.
  • a level of an interrogation signal I is below the distance threshold S, the device 102 identifying is located at a distance from the vehicle greater than that corresponding to the threshold S of distance.
  • the device 102 identifying is at a distance from the vehicle less than that corresponding to the threshold S of distance.
  • the level of the received interrogation signal I globally varies as a negative power of the distance separating the device 102 identifying the device 101 identification.
  • the lower the level of the received interrogation signal I the greater the distance separating the identifying device 102 from the vehicle.
  • the higher the level of the interrogation signal I received the smaller the distance separating the device 102 identifying the vehicle.
  • this distance threshold S corresponds to a level for which the device 102 identifying is at half the distance between the identification device 101 and a periphery of the search zone Z.
  • the device 101 identification sends interrogation signals each separated by a first period T1.
  • This first period T1 is relatively long. Indeed, since the level of the signals I is greater than the threshold S of distance, the device 102 identifying is close to the vehicle 100. It is therefore unlikely that a user with the device 102 identifying shortly emerging from the search zone Z. In one example, when the level of the interrogation signals I received is greater than the threshold S of distance, the device 102 identifying is in the zone circumscribed by the discontinuous lines.
  • the identification device 101 adjusts its frequency of reception. transmitting and sending interrogation signals each separated by a second period T2.
  • This second period T2 is smaller than the first period T1, to avoid any delay in conviction.
  • the device 102 identifying is far from the vehicle and it is very likely that the device 102 will soon come out of the search zone Z.
  • the device 102 identifying is at the periphery of the zone Z.
  • the identification device 101 may enter the validation phase V of the disappearance of the device 102 identifying.
  • this validation phase V consists of a transmission of interrogation signals I sent at a period even smaller than the period T2. This validation phase notably makes it possible to dispense with possible parasitic signals and to validate a disappearance of the device 102 identifying.
  • the figure 2 shows a graphical representation of the interrogation signals I at a level of the interrogation signals I received by the identifying device 102. As already seen, the measurement information of this level is associated with a response signal R. After the processing of the value of the measurement information by the identification device 101, the occurrence of the transmissions of the interrogation signals I can be modified in the periodic transmission phase P.
  • this first period T1 is of the order of one second.
  • this second period T2 is of the order of a few hundred milliseconds.
  • the disappearance of the identifier device 102 is detected at the moment when an expected response signal R corresponding to an interrogation signal I sent in the periodic transmission phase P is not received.
  • a duration of detection of the disappearance of the device 102 identifier is therefore equal, at worst, to the time between the emission of two interrogation signals I, here a few hundred milliseconds if we consider a normal process of removal of the user of the vehicle.
  • the identification device 101 and the identification device would be constrained to emit many more response signals R and interrogation signals respectively than in the method of the invention.
  • each transmission of a response or interrogation signal R consumes energy. Therefore, even if this method could detect a disappearance of the identifier 102 as quickly as in the invention, it would generate a premature consumption of a battery of the device 102 identifying and the identification device, contrary to the invention which optimizes the autonomy of these devices.
  • this validation phase V when the disappearance of the device 102 identifier has been detected, the validation phase V can be performed.
  • this validation phase V consists of successive transmissions of interrogation signals I separated from each other by a third period T3 shorter than the second period T2.
  • this third period T3 is of the order of 100 ms.
  • this validation phase V consists of a high power transmission of an interrogation signal I as described in FIG. figure 4 . In a variant, this validation phase V is not carried out and the judgment of the vehicle is authorized as soon as the detection device 102 is detected.
  • the departure threshold S is calibrated and corresponds to a very precise distance from the device 102 identifying the vehicle 100. In one example, this threshold S corresponds to a given percentage of the level of the interrogation signals I initially sent by the identification device 101.
  • a plurality of calibrated distance thresholds S are defined.
  • a periodic transmission phase P there may be more than two different periods for the transmission of the interrogation signals.
  • X distance thresholds are defined, a new transmission period being selected when the level of the interrogation signal I has varied by X percent of its initial value.
  • the measurement information does not correspond only to the two values M1 and M2 indicating whether the interrogation signal I received is lower or higher than the threshold S.
  • the measurement information can take several directly proportional numerical values. or conversely proportional to the level of the received interrogation signal I.
  • a standard deviation analysis between measurements of the level of the response signal R, or more precisely an analysis of the measurement information associated with them, can make it possible to demonstrate a normality or an abnormality of the disappearance. of the device 102 identifying.
  • a sliding window such as a door-type function, capable of taking account of the Nth, N-1th and N-2nd measurements of the level of the signal I d is used.
  • interrogation received by the device 102 identifying. Measurement information corresponding to the variations of these measurements is then compared with one or more limit values.
  • the identifier device compares received measurement information with at least one previous measurement information of the signals. If this comparison reveals a variation between two measurements greater than a limit value then, the identifying device emits a response signal comprising abnormality information. It is then possible to abandon, suspend or recommit the method of condemnation. The comparison can be made on two successive measurements.
  • the device 102 identifier can then emit a response signal comprising normality information and the condemnation process is continued. So, for the figure 2 since the measurement information corresponds to measurements 210 whose value decreases regularly, it would be possible to validate a normal disappearance of the identifier 102. An automatic judgment procedure could then be performed as soon as the disappearance of the device 102 identifying has been detected. This disappearance is detected from the moment when an expected response signal which is associated with a signal polled that has been issued is not detected.
  • the comparison of the measurement information can be done directly by the identifying device 102 which stores this information in memory in order to compare them with each other.
  • the storage and comparison of the measurement information could also be performed by the identification device. The identification device could then, after the comparison, decide whether or not to continue the conviction process.
  • the method according to the invention would make it possible, when the disappearance of the device 102 identifying is normal, to avoid a phase V of verifying the disappearance of the device 102 identifying which is generally long and energy consumer.
  • the measurement information is processed and compared to a threshold by the device 102 identifying.
  • the identifier device 102 transmits a signal comprising measurement information and the comparison with a threshold of this information is performed by the identification device.
  • a sensor outside the vehicle measures a distance from the device 102 identifying.
  • the electrical signal associated with this measurement can then be processed by the identification device 101.
  • a carrier of the interrogation signals I has a frequency of 125 kHz, so that these signals I are detectable by the device 102 identifying in a limited interrogation zone located between two and four meters around the vehicle 100.
  • a carrier of the response R signals has a frequency of 433Mhz, so that these response signals R are detectable in a response zone larger than the interrogation zone.
  • the response signals R are very penetrating and their arrival at the identification device 101 is guaranteed.
  • the interrogation signals I are exchanged according to an electromagnetic signal exchange standard which may be a manufacturer standard dedicated to a particular application such as automatic judgment or an international standard.
  • the figure 3 shows an interaction between steps 301 and 302 of emission of a periodic emission phase P. It is indeed possible to pass indifferently from a first transmission step 301 to a second transmission step 302.
  • the first period T1 separates two successive transmissions of interrogation signals I and in the second step 302, the second period T2 separates two successive transmissions.
  • the transition from one stage to the other is carried out with the proviso that conditions 303 and 304 are fulfilled.
  • the period that separates two successive interrogation signal emissions I is the first period T1 resignation.
  • the level of the interrogation signals I received by the identification device is less than the distance S threshold in the condition 303 and a response signal R is detected by the identification device, we proceed to the step 302 emission.
  • This step 302 always corresponds to a periodic transmission of interrogation signals.
  • the second period T2 separating two successive interrogation signal transmissions I is equal to T2 which is smaller than the first period T1.
  • it may be in a periodic transmission phase where two successive transmissions of interrogation signals I are separated by a period T2.
  • the condition 304 is fulfilled.
  • the period between two interrogation signals is then again T1.
  • This inversion is essential because a user equipped with the device 102 identifier could for some reason move a few meters away from the vehicle 100 (the level of the interrogation signals I being then less than S) and then return to an area very close to the vehicle (The level of the interrogation signals being then greater than the threshold S of distance).
  • a condition 305 makes it possible to exit steps 301 and 302 from the periodic transmission phase.
  • This condition 305 is fulfilled if no response signal R is received by the identification device 101. No response signal R is received when the level of the interrogation signals I received by the identifying device 102 is below the detection threshold of the identifying device 102 or when the reception of the response signal could not be done because of external electromagnetic signals that may have disturbed the propagation of the response signal or the interrogation signal.
  • We can then enter a new step not shown such as for example automatically condemn the vehicle 100 or validate a disappearance of the device 102 identifier.
  • Steps 401-406 correspond to a phase of periodic transmission of interrogation signals I while a step 407 corresponds to a phase of validation of the disappearance of the device 102 identifying.
  • the figure 4 corresponds to an exploded diagram, ie more detailed, of the figure 3 .
  • the steps 401-403 correspond to the step 301 of transmitting the figure 3 while steps 404-406 correspond to step 302 of transmitting the figure 3 .
  • the arrows of interactions between the steps also correspond to the arrows 303 and 304 described in FIG. figure 3 .
  • the first step 401 is a transmission step wherein the identification device 101 transmits time separated interrogation signals each of the first period T1.
  • a second step 402 the identification device 101 detects whether a response signal R corresponding to the periodic transmissions separated from the first period T1 is received. In the case where no response signal R is detected, proceed to step 407 of validation of the disappearance of the device 102 explained below. In the case where an interrogation signal I is detected by the identification device 101, the third step 403 is proceeded to.
  • the identifier device 102 sends with the response signal R a measurement information which takes the value M1 if the level of the interrogation signal I received is greater than the value M2 if this level is below the threshold S removal. In the case where this level is greater than the threshold S, return to the first step 401. In the opposite case, we go to the fourth step 404.
  • This step 404 corresponds to a periodic transmission step in which the identification device 101 transmits the interrogation signals each separated by a period T2 smaller than the first period T1. Indeed, the lowering of the level of the interrogation signal I means that the identifying device 102 moves away from the vehicle 100 and it is then necessary to detect as quickly as possible the disappearance of this device 102 identifying.
  • a fifth step 404 the identification device 101 detects whether a response signal R corresponding to the separate periodic transmissions of the second period T2 is received. If no response signal is detected, proceed to the validation step 407 which is explained below. If a response signal R is received by the identification device 101, then it proceeds to the sixth step 406.
  • step 406 is identical to step 403 and therefore refers to the same steps as the latter. Thus, if the level of the interrogation signals I received is greater than the threshold S of distance, we return to step 401. In the opposite case, we return to step 404.
  • the validation step 407 may consist of a very low frequency transmission of the interrogation signals and makes it possible to ensure the definitive disappearance of the identifying device 102.
  • the identification device 101 again detects a response signal R, it returns to the first step 401. As a variant, it may be decided to return to step 404 if the level received signal is less than the distance threshold S. In the case where at the end of the low frequency transmission, no response signal R is detected by the identification device 101, it may be decided to condemn the vehicle in a judgment step 408.
  • the locking of the vehicle consists of a locking of the doors and a standby of the electronic circuits of the vehicle 100.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP05717066A 2004-03-29 2005-03-16 Procede pour condamner automatiquement des ouvrants d'un vehicule automobile Active EP1735755B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0403258A FR2868109B1 (fr) 2004-03-29 2004-03-29 Procede pour condamner automatiquement des ouvrants d'un vehicule automobile
PCT/EP2005/051199 WO2005106805A1 (fr) 2004-03-29 2005-03-16 Procede pour condamner automatiquement des ouvrants d’un vehicule automobile

Publications (2)

Publication Number Publication Date
EP1735755A1 EP1735755A1 (fr) 2006-12-27
EP1735755B1 true EP1735755B1 (fr) 2013-01-23

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EP05717066A Active EP1735755B1 (fr) 2004-03-29 2005-03-16 Procede pour condamner automatiquement des ouvrants d'un vehicule automobile

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EP (1) EP1735755B1 (ja)
JP (1) JP4800298B2 (ja)
FR (1) FR2868109B1 (ja)
WO (1) WO2005106805A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201119792D0 (en) 2011-11-16 2011-12-28 Jaguar Cars Vehicle access system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3372228B2 (ja) * 1999-09-29 2003-01-27 本田技研工業株式会社 車両用電子キー装置
DE10155123B4 (de) * 2001-11-09 2004-03-25 Siemens Ag Diebstahlschutzvorrichtung für ein Kraftfahrzeug und Verfahren zum Betreiben einer Diebstahlschutzvorrichtung
JP4214199B2 (ja) * 2001-11-19 2009-01-28 株式会社デンソー 車両のドアアンロック装置
FR2834344A1 (fr) * 2001-12-28 2003-07-04 Siemens Vdo Automotive Procede de detection d'un badge a l'interieur d'un vehicule equipe d'un systeme mains libres
US6611742B1 (en) * 2002-04-22 2003-08-26 Lucent Technologies Inc. Automobile security alarm systems

Also Published As

Publication number Publication date
FR2868109B1 (fr) 2008-10-03
FR2868109A1 (fr) 2005-09-30
WO2005106805A1 (fr) 2005-11-10
EP1735755A1 (fr) 2006-12-27
JP4800298B2 (ja) 2011-10-26
JP2007530837A (ja) 2007-11-01

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