FR3101158B1 - Phase-based distance measurement with constant gain application - Google Patents

Phase-based distance measurement with constant gain application Download PDF

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Publication number
FR3101158B1
FR3101158B1 FR1910545A FR1910545A FR3101158B1 FR 3101158 B1 FR3101158 B1 FR 3101158B1 FR 1910545 A FR1910545 A FR 1910545A FR 1910545 A FR1910545 A FR 1910545A FR 3101158 B1 FR3101158 B1 FR 3101158B1
Authority
FR
France
Prior art keywords
radio frequency
frequency unit
phase
constant gain
identifier
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.)
Active
Application number
FR1910545A
Other languages
French (fr)
Other versions
FR3101158A1 (en
Inventor
Eric Leconte
Joel Pature
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 Comfort and Driving Assistance SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Comfort and Driving Assistance SAS filed Critical Valeo Comfort and Driving Assistance SAS
Priority to FR1910545A priority Critical patent/FR3101158B1/en
Priority to EP20768368.1A priority patent/EP4034911A1/en
Priority to PCT/EP2020/075746 priority patent/WO2021058331A1/en
Publication of FR3101158A1 publication Critical patent/FR3101158A1/en
Application granted granted Critical
Publication of FR3101158B1 publication Critical patent/FR3101158B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—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
    • G01S13/00—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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/84—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted for distance determination by phase measurement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—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
    • G01S13/00—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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/765—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with exchange of information between interrogator and responder
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Mesure de distance basée sur phase avec application de gain constant On propose un procédé pour mesurer une distance entre un véhicule et un identifiant. Le véhicule comprend une première unité radio fréquence et l’identifiant comprend une deuxième unité radio fréquence. Le procédé comprend une communication bidirectionnelle entre la première unité radio fréquence et la deuxième unité radio fréquence. La communication bidirectionnelle comprend, pour un ou plusieurs canaux de fréquence et par au moins l’un parmi une première unité radio fréquence et une deuxième unité radio fréquence, une application d’un gain prédéterminé et constant. Le procédé comprend en outre une détermination, pour chaque canal de fréquence, d’un déphasage respectif. Le procédé comprend en outre une détermination de la distance entre le véhicule et l’identifiant à partir des déphasages. Le procédé permet d’améliorer la mesure de la distance entre l’identifiant et le véhicule.Figure pour l’abrégé : Fig. 1Phase-based distance measurement with constant gain application A method is provided for measuring a distance between a vehicle and an identifier. The vehicle includes a first radio frequency unit and the identifier includes a second radio frequency unit. The method includes two-way communication between the first radio frequency unit and the second radio frequency unit. The two-way communication comprises, for one or more frequency channels and by at least one of a first radio frequency unit and a second radio frequency unit, an application of a predetermined and constant gain. The method further comprises determining, for each frequency channel, a respective phase shift. The method further comprises determining the distance between the vehicle and the identifier from the phase shifts. The process improves the measurement of the distance between the identifier and the vehicle. 1

FR1910545A 2019-09-24 2019-09-24 Phase-based distance measurement with constant gain application Active FR3101158B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1910545A FR3101158B1 (en) 2019-09-24 2019-09-24 Phase-based distance measurement with constant gain application
EP20768368.1A EP4034911A1 (en) 2019-09-24 2020-09-15 Phase-based distance measurement with constant gain application
PCT/EP2020/075746 WO2021058331A1 (en) 2019-09-24 2020-09-15 Phase-based distance measurement with constant gain application

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1910545A FR3101158B1 (en) 2019-09-24 2019-09-24 Phase-based distance measurement with constant gain application
FR1910545 2019-09-24

Publications (2)

Publication Number Publication Date
FR3101158A1 FR3101158A1 (en) 2021-03-26
FR3101158B1 true FR3101158B1 (en) 2021-08-27

Family

ID=69468695

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1910545A Active FR3101158B1 (en) 2019-09-24 2019-09-24 Phase-based distance measurement with constant gain application

Country Status (3)

Country Link
EP (1) EP4034911A1 (en)
FR (1) FR3101158B1 (en)
WO (1) WO2021058331A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3125597B1 (en) * 2021-07-23 2023-09-22 Paris Sciences Et Lettres DEVICE AND METHOD FOR CENTIMETRIC POSITIONING OF A MOBILE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10212648B4 (en) * 2002-03-21 2006-04-13 Siemens Ag Identification system for proving authorization for access to an object or the use of an object, in particular a motor vehicle
DE102004038836A1 (en) * 2004-08-10 2006-02-23 Siemens Ag Method for distance measurement in a wireless carrier frequency communication system and carrier frequency communication system for carrying out the method
US8886148B2 (en) * 2010-05-26 2014-11-11 Qualcomm Incorporated Signal based gain control
FR3040497B1 (en) 2015-08-31 2017-10-13 Valeo Comfort & Driving Assistance METHOD FOR DETERMINING A DISTANCE BETWEEN A VEHICLE AND A VEHICLE ACCESS AND STARTING IDENTIFIER
FR3044100B1 (en) * 2015-10-19 2018-01-05 Valeo Comfort And Driving Assistance METHOD FOR ESTIMATING DISTANCE AND ELECTRONIC UNIT FOR VEHICLE
FR3060766B1 (en) 2016-12-21 2020-05-01 Valeo Comfort And Driving Assistance METHOD AND SYSTEM FOR EVALUATING A DISTANCE BETWEEN AN IDENTIFIER AND A VEHICLE, EMBEDDED SYSTEM AND IDENTIFIER THEREFOR

Also Published As

Publication number Publication date
FR3101158A1 (en) 2021-03-26
EP4034911A1 (en) 2022-08-03
WO2021058331A1 (en) 2021-04-01

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