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1. (WO2017037132) METHOD FOR DETERMINING A DISTANCE BETWEEN A VEHICLE AND A VEHICLE ACCESS AND STARTER IDENTIFIER
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Pub. No.: WO/2017/037132 International Application No.: PCT/EP2016/070545
Publication Date: 09.03.2017 International Filing Date: 31.08.2016
IPC:
G01S 13/82 (2006.01) ,G01S 13/84 (2006.01) ,G07C 9/00 (2006.01)
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
74
Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
82
wherein continuous-type signals are transmitted
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
74
Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
82
wherein continuous-type signals are transmitted
84
for distance determination by phase measurement
G PHYSICS
07
CHECKING-DEVICES
C
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
9
Individual entry or exit registers
Applicants:
VALEO COMFORT AND DRIVING ASSISTANCE [FR/FR]; 76 rue Auguste Perret - ZI Europarc 94046 Créteil Cedex, FR
Inventors:
LECONTE, Eric; FR
Agent:
GRUNBERG, Patrick; FR
Priority Data:
155808531.08.2015FR
Title (EN) METHOD FOR DETERMINING A DISTANCE BETWEEN A VEHICLE AND A VEHICLE ACCESS AND STARTER IDENTIFIER
(FR) PROCÉDÉ DE DÉTERMINATION D'UNE DISTANCE ENTRE UN VÉHICULE ET UN IDENTIFIANT D'ACCÈS ET DE DÉMARRAGE DU VÉHICULE
Abstract:
(EN) The invention relates to a method (METH) for measuring a distance R between a vehicle (V) and an identifier (I) for accessing and starting the vehicle (V), the vehicle (V) and the identifier (I) being synchronised. The method (METH) comprises N Sqp, pϵ[1;N] sequences, where N is a natural number at least higher than 3, each Sqp sequence comprising the following steps: - transmitting (Em_Svp) a first signal (Svp) of frequency fp from an emitter (TXv) of the vehicle (V) to a receiver (Rxi) of the identifier (I); - measuring (Mes_ φvip) with a calculator (Xi) of the identifier a phase φvip, modulo 2π, of the first signal (Svp) received, relative to a second signal (Sip) of phase φiP(t) = φ0ip + 2πfpt; - transmitting (Em_Sip) the second signal (Sip) from an emitter (TXi) of the identifier (I) to a receiver (RXv) of the vehicle (V); - calculating (Mes_ φivp) with a calculator (Xv) of the vehicle (V) a phase φivp, modulo 2π, of the second signal (Sip) received, relative to the first signal (Svp), - calculating (Cal_φp) the average φp of the phase φvip and of the phase φivp; the method (METH) further comprising: - for each p between 1 and N-1, calculating (Cal_Pp) a ramp Pp using the formula Pp=(φp+1p)/(fp+1-fp); - filtering (Fil_ Pp) N-1 values of the calculated ramps Pp in order to determine an optimum ramp P; - calculating (Cal_R) distance R from the optimum ramp P.
(FR) L'invention concerne un procédé (METH) de mesure d'une distance R séparant un véhicule (V) et un identifiant (I) pour accéder et démarrer le véhicule (V), le véhicule (V) et l'identifiant (I) étant synchronisés, le procédé (METH) comprenant N séquences Sqp, pϵ[1;N], N étant un entier naturel au moins supérieur à 3, chaque séquence Sqp comprenant les étapes suivantes : - une transmission (Em_Svp), d'un émetteur (TXv) du véhicule (V) à un récepteur (Rxi) de l'identifiant (I), d'un premier signal (Svp) de fréquence fp; - une mesure (Mes_ φvip), par un calculateur (Xi) de l'identifiant (I), d'une phase φvip, modulo 2π, du premier signal (Svp) reçu, relativement à un deuxième signal (Sip) de phase φiP(t) = φ0ip + 2πfpt; - une transmission (Em_Sip), d'un émetteur (TXi) de l'identifiant (I) à un récepteur (RXv) du véhicule (V), du deuxième signal (Sip); - un calcul (Mes_ φivp), par un calculateur (Xv) du véhicule (V), d'une phase φivp, modulo 2π, du deuxième signal (Sip) reçu, relativement au premier signal (Svp); un calcul (Cal_φp) de la moyenne φp de la phase φvip et de la phase φivp; le procédé (METH) comportant en outre : - pour chaque p entre 1 et N-1, un calcul (Cal_Pp) d'une pente Pp par la formule Pp=(φp+1p)/(fp+1-fp); - un filtrage (Fil_ Pp) des N-1 valeurs de pentes Pp calculées, pour déterminer une pente optimale P; - un calcul (Cal_R) de la distance R à partir de la pente optimale P.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)