EP1189302A1 - Procédé de calibrage d'un système d'accès mains libres de véhicule automobile - Google Patents
Procédé de calibrage d'un système d'accès mains libres de véhicule automobile Download PDFInfo
- Publication number
- EP1189302A1 EP1189302A1 EP01121904A EP01121904A EP1189302A1 EP 1189302 A1 EP1189302 A1 EP 1189302A1 EP 01121904 A EP01121904 A EP 01121904A EP 01121904 A EP01121904 A EP 01121904A EP 1189302 A1 EP1189302 A1 EP 1189302A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- antenna
- authentication unit
- vehicle
- authentication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 15
- 230000005672 electromagnetic field Effects 0.000 claims description 9
- 230000003595 spectral effect Effects 0.000 claims description 4
- 210000000056 organ Anatomy 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000012550 audit Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
- H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
Definitions
- the invention relates to a method for calibrating a hand access system. free including a control and authentication unit mounted in a vehicle with at least one electromagnetic field emitting antenna and an antenna pilot, and a portable identification member capable of communicate remotely with the control and authentication unit to be authenticated.
- the invention relates to hands-free vehicle access systems automobiles designed so that a user carrying an identification device can unlock his vehicle to enter it and then start it, without having to operate a key or remote control.
- the control and authentication unit is able to communicate with the organ identification by exchange of electromagnetic signals to authenticate the badge in order to control the unlocking of the vehicle and / or the authorization starting the vehicle.
- the transmitting antenna which is a winding of electrical conductors capable of emitting a signal electromagnetic is generally mounted near parts of the vehicle, which in particular tends to modify the impedance of this transmitting antenna, and consequently, its range. It was thus found after installation, these hands-free access systems may have malfunctions such as a signal range electromagnetic emission from the transmitting antenna of the vehicle is inadequate.
- the object of the invention is to remedy this drawback.
- Such a method causes malfunctions of a system hands-free access can be corrected at the end of the assembly line vehicles or at a dealership in the case of a replacement of access system, and this in a very intervention time short.
- the modified operating parameters are a report cyclic and / or peak intensity in the transmitting antenna, and / or values transmission frequencies. In this way it is possible to modify the the most relevant operating parameters to improve the range of the electromagnetic field emitted by the transmitting antenna and thus respect the specifications required by the manufacturer.
- the single figure is a schematic representation of an equipped vehicle a hands-free access system being calibrated.
- the single figure shows a VE vehicle equipped with a system hands-free access.
- This access system includes a control unit and UC authentication with a PA antenna driver intended to generate a current in an AE transmitting antenna to generate a signal élecromagnically.
- the AE transmitting antenna is here located in the pavilion of the VE vehicle, so as to emit an electromagnetic signal according to a DR emission diagram extending around the VE vehicle.
- This unit of control and authentication still includes one or more antennas receivers not represented, and intended to receive data from the identification body. So the control unit and authentication system is able to exchange data with an organ identification carried by a user, in order to authenticate it for unlock the vehicle and / or to authorize the vehicle to start.
- the unit of UC control and authentication is connected to a measuring and AM control by a wired LF link so that it can receive data from the AM measurement and control device via this link.
- This AM measurement and control device is connected to one or more multiple AR receiving antennas for receiving signals electromagnetic emitted by the hands-free access system.
- This device of measurement and control AM could for example include a computer for parameter control, data storage, and control of the calibration.
- Such a computer is connected to the AR receiving antennas and to the wired connection FL via an input-output card. More specifically, AR receiving antennas are intended to be used separately, in view perform for example a first calibration using an antenna receiver placed outside the vehicle, then a second calibration in operating a receiving antenna located inside the vehicle.
- the AM measurement and control device is suitable for sending, in a first step, a message in the form of a signal to the UC control and authentication unit for configure it in a calibration mode.
- the calibration is only possible with a wired connection which constitutes a security face the risks of remote hacking of such hand access systems free as well as towards the risks of electromagnetic disturbances during the process.
- the unit UC control and authentication is programmed to transmit via its transmitting antenna AE an electromagnetic signal, so that this signal is received by the AM measurement and control device at an antenna AR receiver.
- this AR receiving antenna is a calibrated antenna which is placed at a predefined distance D from the VE vehicle, so that the electromagnetic signal received in this antenna serves as basic data for system calibration access.
- the AM thus simulates the functioning of the identification body portable.
- the distance D, the height and the orientation of the antenna receiving will be set to best match conditions predefined calibration standard.
- the AM measurement and control device measures certain electromagnetic and spectral characteristics of the signal electromagnetic. According to its electrical and magnetic components, these characteristics may be the emission frequencies of the access system, the amplitude of the electromagnetic field received or the duty cycle periodic signals, which are factors conditioning the sensitivity of the body identifying the electromagnetic signals emitted by the system access. More particularly, the measurement and control device may first record the signal received at its receiving antenna AR, then analyze this record to deduce the characteristics of the electromagnetic signal emitted. By comparing these measured characteristics at reference values, the measurement and control device chooses calibration data intended for the pilot of the AE transmitting antenna. These calibration data are chosen so that the signals emitted by the recognition device have characteristics corresponding to reference values. More specifically, the choice of calibration can be performed by reading data tables pre-recorded in the measuring and control device. So the camera AM measurement and control can send this new calibration data to the control and authentication unit UC, via the wired link LF.
- the control and authentication unit will modify operating parameters of the PA antenna driver. More specifically, these calibration data could be for example two frequencies emission, a duty cycle, and a setpoint of the intensity of the current in the transmitting antenna AE.
- the control and authentication unit CPU is programmed to modify the operating parameters of the antenna driver from the received calibration data.
- These operating parameters may be the duty cycle of the signals emitted, in order to modify the peak intensity of the current in the antenna to play on the range of the emitted magnetic field, the value of the intensity peak in case the pilot is able to change the nominal voltage that it applies to the terminals of the transmitting antenna, or the frequencies of emission so as to adjust them with respect to the frequency of antenna resonance.
- Modification of operating parameters of the antenna pilot could be the entry of new variables in a program for generating a control signal to modify a duty cycle or emission frequencies, or even modification of antenna pilot input voltages.
- the process must be applied second time by placing the receiving AR antenna inside the vehicle view to calibrate the pilot of this second antenna.
- the AM measurement and control device can also transmit an electromagnetic field so as to simulate an organ identification, in order to verify that the sensitivity of the recognition upon reception of electromagnetic signals emitted by a identification body is satisfactory.
- the correction of some malfunctions of a hands-free access system can be carried out with a measurement and control device by connection of this device to the control and authentication unit, then by triggering an automatic calibration, so that this correction is simple and fast.
- This calibration can thus be performed at the end of the assembly line, or at a dealer after replacing system components hands-free vehicle access.
- an identical process to calibrate the antenna internal which will be used to authorize the starting of the vehicle if the organ portable identification is detected inside the vehicle can be used.
- the AM can be moved to critical locations in the vehicle for implementation of the process.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Claims (2)
- Procédé pour calibrer un système d'accès mains libres comprenant une unité de contrôle et d'authentification (UC) montée dans un véhicule (VE) avec au moins une antenne émettrice (AE) de champ électromagnétique et un pilote d'antenne (PA), et un organe d'identification (Ol) portatif apte à communiquer à distance avec l'unité de contrôle et d'authentification (UC) pour être authentifié, caractérisé en ce qu'il consiste dans les étapes suivantes :1°- envoyer à l'unité de contrôle et d'authentification (UC), depuis un appareil de mesure et de contrôle (AM) équipé d'une antenne réceptrice de champ électromagnétique (AR) relié à l'unité de contrôle et d'authentification (UC) par une liaison filaire (LF), un message pour configurer l'unité de contrôle et d'authentification (UC) dans un mode de calibrage,2°- sur réception du message, générer un signal, et le transmettre depuis l'unité de contrôle et d'authentification (UC) via lesdites antennes émettrice et réceptrice (AE, AR) audit appareil de mesure et de contrôle (AM),3°- mesurer des caractéristiques électromagnétiques et spectrales dudit signal reçu sur l'antenne réceptrice (AR) dans l'appareil de mesure et de contrôle (AM), les comparer à des valeurs de référence et renvoyer des données de calibrage à l'unité de contrôle et d'authentification (UC) via la liaison filaire (LF) dans le cas où les caractéristiques mesurées ne correspondent pas aux valeurs de référence,4°- sur réception des données de calibrage par l'unité de contrôle et d'authentification (UC), modifier des paramètres de fonctionnement du pilote d'antenne (PA).
- Procédé selon la revendication 1, dans lequel à l'étape 4, les paramètres de fonctionnement modifiés sont un rapport cyclique et/ou une intensité crête dans l'antenne émettrice, et/ou des valeurs de fréquences d'émission.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0011659 | 2000-09-13 | ||
| FR0011659A FR2814013B1 (fr) | 2000-09-13 | 2000-09-13 | Procede de calibrage d'un systeme d'acces mains libres de vehicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1189302A1 true EP1189302A1 (fr) | 2002-03-20 |
Family
ID=8854242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01121904A Withdrawn EP1189302A1 (fr) | 2000-09-13 | 2001-09-12 | Procédé de calibrage d'un système d'accès mains libres de véhicule automobile |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6915122B2 (fr) |
| EP (1) | EP1189302A1 (fr) |
| FR (1) | FR2814013B1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6915122B2 (en) * | 2000-09-13 | 2005-07-05 | Valeo Electronique | Method for calibration of a keyless entry system for a motor vehicle |
| FR2910751A1 (fr) * | 2006-12-22 | 2008-06-27 | Valeo Securite Habitacle Sas | Procede de detection d'un objet d'identification dans un vehicule. |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7046119B2 (en) * | 2004-05-19 | 2006-05-16 | Lear Corporation | Vehicle independent passive entry system |
| US20080129477A1 (en) * | 2004-12-28 | 2008-06-05 | Rohm Co., Ltd. | Transmission Device, Keyless Entry System, and Tire Pneumatic Pressure Monitoring System |
| JP4501719B2 (ja) * | 2005-02-22 | 2010-07-14 | トヨタ自動車株式会社 | 車両遠隔操作装置 |
| US8107812B2 (en) * | 2005-09-23 | 2012-01-31 | Honeywell International Inc. | Dynamic range measurement and calculation of optical keyless entry sensor |
| US8725330B2 (en) | 2010-06-02 | 2014-05-13 | Bryan Marc Failing | Increasing vehicle security |
| DE102018204565A1 (de) * | 2018-03-26 | 2019-09-26 | Siemens Aktiengesellschaft | Einstellen eines Kommunikationsparameters eines Kommunikationsmoduls einer Ladestation |
| DE102018210072B4 (de) * | 2018-06-21 | 2020-08-20 | Volkswagen Aktiengesellschaft | Verfahren zum Kalibrieren eines funkbasierten schlüssellosen Zugangssystems eines Kraftfahrzeugs, Zugangssystem und Kraftfahrzeug |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4755823A (en) * | 1985-08-09 | 1988-07-05 | Toyota Jidosha Kabushiki Kaisha | Keyless vehicle entry apparatus |
| US5396255A (en) * | 1994-02-28 | 1995-03-07 | United Technologies Corporation | Automated far field antenna pattern test facility |
| EP0901183A2 (fr) * | 1997-09-05 | 1999-03-10 | Nortel Networks Corporation | Commande de phase dans des antennes de transmission |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2808138B1 (fr) * | 2000-04-19 | 2002-06-07 | Valeo Electronique | Pilote d'antenne emetrice de champ magnetique a circuit rlc |
| FR2814013B1 (fr) * | 2000-09-13 | 2002-10-11 | Valeo Electronique | Procede de calibrage d'un systeme d'acces mains libres de vehicule automobile |
-
2000
- 2000-09-13 FR FR0011659A patent/FR2814013B1/fr not_active Expired - Fee Related
-
2001
- 2001-09-12 EP EP01121904A patent/EP1189302A1/fr not_active Withdrawn
- 2001-09-13 US US09/950,806 patent/US6915122B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4755823A (en) * | 1985-08-09 | 1988-07-05 | Toyota Jidosha Kabushiki Kaisha | Keyless vehicle entry apparatus |
| US5396255A (en) * | 1994-02-28 | 1995-03-07 | United Technologies Corporation | Automated far field antenna pattern test facility |
| EP0901183A2 (fr) * | 1997-09-05 | 1999-03-10 | Nortel Networks Corporation | Commande de phase dans des antennes de transmission |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6915122B2 (en) * | 2000-09-13 | 2005-07-05 | Valeo Electronique | Method for calibration of a keyless entry system for a motor vehicle |
| FR2910751A1 (fr) * | 2006-12-22 | 2008-06-27 | Valeo Securite Habitacle Sas | Procede de detection d'un objet d'identification dans un vehicule. |
| WO2008077929A1 (fr) * | 2006-12-22 | 2008-07-03 | Valeo Securite Habitacle | Procede de detection d'un objet d'identification dans un vehicule |
| US8773240B2 (en) | 2006-12-22 | 2014-07-08 | Valeo Securite Habitacle | Method for detecting an identification object in a vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| US20020160720A1 (en) | 2002-10-31 |
| US6915122B2 (en) | 2005-07-05 |
| FR2814013A1 (fr) | 2002-03-15 |
| FR2814013B1 (fr) | 2002-10-11 |
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