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WO2017129403A1 - Détermination de distance par mesure de champ magnétique - Google Patents

Détermination de distance par mesure de champ magnétique Download PDF

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Publication number
WO2017129403A1
WO2017129403A1 PCT/EP2017/050461 EP2017050461W WO2017129403A1 WO 2017129403 A1 WO2017129403 A1 WO 2017129403A1 EP 2017050461 W EP2017050461 W EP 2017050461W WO 2017129403 A1 WO2017129403 A1 WO 2017129403A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
ore
spu
mobile terminal
measured
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.)
Ceased
Application number
PCT/EP2017/050461
Other languages
German (de)
English (en)
Inventor
Stefan Hermann
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of WO2017129403A1 publication Critical patent/WO2017129403A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/0206—Three-component magnetometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes

Definitions

  • the invention relates to methods and devices for distance determination, in particular for determining the distance of a mobile terminal, such as / with a telecommunication terminal and / or smartphone, relative to a further device, in particular in the form of a motor vehicle with a vehicle access and / or or start system.
  • An object of the invention is to optimize a distance determination.
  • the object is achieved in each case by the subject matters of the independent patent claims. Some particularly before ⁇ some embodiments of the invention are described in the subclaims and the description given.
  • Embodiments of the invention may allow precise and / or efficient distance determination as alternatives to existing solutions.
  • a location of a mobile (mobile) terminal (and possibly also, for example, in the vicinity of the same user located (vehicle) key) taking into account Magnetfeldmes ⁇ sungen skilful elimination of geomagnetic field / ambient magnetic field Influences take place.
  • This may, according to embodiments of the invention, have one or more of the following advantages, that a disturbance of a distance measurement by eg radio links and / or other magnetic fields can be avoided, and / or that a generation of a magnetic field with, for example, direct current is simple and cost-effective. may be favorable, and / or that the magnetic field can be determined by means of built-in terminals such as telecommunications terminals / smartphone sensors.
  • An embodiment of the invention can in particular in a method and / or (eg for a transceiver principle) in a location device (such as a vehicle access and / or start system) and / or in a mobile terminal be realized (eg in the form of a telecommunications terminal such as a smartphone).
  • the mobile terminal in the mobile terminal (from there measured data, eg with a program and / or an application / app) and / or (in particular after a transmission of measurement data) in a motor vehicle -side locating device, taking into account the particular at least twice measured magnetic field, the distance of the mobile terminal to the motor vehicle to be determined.
  • an at least partially generated by the Magnetfelderzeu ⁇ constriction device magnetic field can be measured at several time points as an alternative or in addition to the last-mentioned embodiment by the mobile terminal, once during the magnetic field ⁇ forming apparatus, a poled in a first direction magnetic field is generated, and once while no and / or a weaker poled in the first direction magnetic field is generated with the magnetic field generation device ⁇ .
  • an at least partially (partially for example, because the magnetic field in the terminal, the earth's magnetic field may be provided with also determined by, for example) can be generated by the magnetic ⁇ field generation device magnetic field efficiently in each case with direct current and / or at least one coil are generated, particularly if at two time points, a different (for example, once with zero value or a counter ⁇ set) is generated by magnetic field reversal or down ⁇ circuit of the direct current.
  • the mobile terminal three in particular angled to each other and / or orthogonal components of the magnetic field can be measured, in particular by in the case of generation of a at two times successively in two different directions poled magnetic field, the three components are each subtracted and used for distance measurement, or in the case of generation successively poled in one direction generated magnetic field and then no magnetic field thus generated, the three components respectively subtracted and Entfer ⁇ be used tion measurement, preferably in the second Time the measured magnetic field can be considered as generated by the earth's magnetic field and / or the environment.
  • one or more measurements of the magnetic field present in the mobile terminal can take place in the mobile terminal in the form of, in particular, a telecommunications terminal and / or smartphones by sensors installed in the mobile terminal, in particular if there are already three magnetic field sensors for e.g. other applications such as e.g. are present as a compass.
  • FIG. 1 shows a vehicle with a locating device and magnetic field generating device for locating a mobile terminal
  • FIG. 2 shows a sequence of a distance determination
  • FIG. 3 shows a further sequence of a distance determination
  • Fig. 1 shows an example of an embodiment of the invention for determining the distance d of a mobile terminal MS (such as a telecommunication terminal and / or smartphone) relative to another device vehicle, in particular in the form of a motor vehicle vehicle (with a vehicle access and / or -Start-System Ort-Kfz),
  • MS such as a telecommunication terminal and / or smartphone
  • another device vehicle in particular in the form of a motor vehicle vehicle (with a vehicle access and / or -Start-System Ort-Kfz)
  • a magnetic field sensor may e.g. a Hall sensor, e.g. as a current-carrying coil, e.g. one each for three directions x, y, z, e.g. also for a (short-term) static magnetic field.
  • determining the distance d by measuring the distance d between the motor vehicle motor vehicle and a motor vehicle key key (which may be implemented in the terminal MS or another key keyf), e.g. based on (the field strength of) at least one RF and / or RF signal and / or LF signal, wherein the distance d of the keyk key and the mobile terminal MS to the motor vehicle can be approximately equal, e.g. if both are in pockets or hands etc. of the same user Usr.
  • an RF link for a key location is used by a measured RF field strength (RF-RSSI), where the RF field strength may not be sufficient from Depending on the distance (l / d A 3) could be dependent on the distance to the vehicle (l / d A 2), in comparison, the LF field strength could be more dependent on the distance (l / d A 3).
  • RF-RSSI measured RF field strength
  • cost-effective solutions for keyless access systems can be found by means of geomagnetic field measurement using, for example, a smartphone.
  • the distance (distance) d of a mobile terminal MS such as a mobile phone and / or smartphone (a user Ben) to a vehicle motor vehicle can be determined.
  • the vehicle is e.g. at least one coil of spit ore which alters an already existing earth magnetic field B-earth, etc. additive / subtractive etc.
  • the mobile terminal may e.g. a mobile terminal (e.g., for at least one cellular standard) or a fitness watch (heartbeat metering clock / step counter, etc.) and / or a terminal with compass and / or one or more parts.
  • a mobile terminal e.g., for at least one cellular standard
  • a fitness watch heartbeat metering clock / step counter, etc.
  • a flow in Fig. 2 for an embodiment of the invention e.g., that in Fig. 1
  • components Bx, By, Bz can each designate (mutually oblique or orthogonal components of the magnetic field measured in the terminal MS (possibly composed of, for example, B-ore-1 or B-ore-2 and B-earth)):
  • step S2 the (magnetic field generating device with a) coil Spu ore with DC I is fed (I> 0) and there are three components Bx, By, Bz of the resulting magnetic field (Earth's magnetic field B-earth plus Spu ore-generated magnetic field B-ore-2) in the terminal MS (smartphone) measured (with Spu-measuring-x, Spu-Mess-y, Spu-measuring-z).
  • step S3 the fields measured in step S1 (ie in each case the components Bx, By, Bz) are subtracted from the fields measured in step S2 (components Bx, By, Bz) (eg with a program and / or processor Ctrl -MS, etc.) and one obtains therewith (eg from the three components by spatial calculation of the total vector, etc.) the amount of the (magnetic field generating device with one) coil Spu ore produced
  • Magnetic field B-ore-2 (more precisely: the arriving in the terminal MS, weakened due to the distance d magnetic field Bx, By, Bz).
  • step S4 further data relating to the distance d of the key and / or mobile terminal MS from the motor vehicle motor vehicle are possibly generated by further methods.
  • step S5 the distance d is determined therefrom, namely in the mobile terminal MS and / or (after transmission of data regarding differences and / or magnetic fields and / or further data) to the motor vehicle motor vehicle) in the motor vehicle vehicle.
  • step Sl three components Bx, By, Bz of the magnetic field B-earth in the terminal MS (smartphone) are measured (with sensors Spu-Mess-x, Spu-Mess-y, Spu-measuring-z), while in the Device motor vehicle the (magnetic field generating device with a) coil Spu ore with current I fed in one direction (K0), (eg detected in the terminal via the (continuously measured) magnetic field and / or the motor vehicle to the mobile terminal with a signal etc can be instructed wirelessly).
  • step S2 the (magnetic field generating device with a) coil Spu ore with (reverse polarity) direct current I in the direction opposite to the previous direction fed (I> 0) and there are three components Bx, By, Bz of the resulting Magnetic field (Earth's magnetic field B-earth + Spu ore-generated magnetic field) in the terminal MS (Smartphone) measured (with sensors Spu-measuring-x, Spu-Mess-y, Spu-measuring-z).
  • step S3 the fields measured in step S1 (components Bx, By, Bz) are subtracted from the fields measured in step 2 (components Bx, By, Bz) (eg with a program and / or processor Ctrl-MS) and Thus one obtains the difference between the magnetic field B-ore-1 (more precisely: the incoming signal in the terminal MS, due to the distance d) generated by a (magnetic field generating device with one) spool of ore (at two times, with I> 0 or KO) weakened magnetic field).
  • step S4 further data relating to the distance d of the key and / or mobile terminal MS from the motor vehicle motor vehicle are possibly generated by further methods.
  • step S5 the distance d is determined therefrom, specifically in the mobile terminal MS and / or (after transmission of data regarding differences and / or magnetic fields and / or further data) to the motor vehicle) in the motor vehicle. In this case, one reaches e.g. a doubling of the difference of the field strengths generated and measured by the coil at two times.

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Telephone Function (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne des dispositifs et un procédé de détermination de la distance (d) d'un terminal mobile (MS), en particulier sous la forme d'un terminal de télécommunication et/ou d'un téléphone intelligent, par rapport à un autre dispositif (Kfz), en particulier sous la forme d'un véhicule automobile (Kfz) comprenant un système d'accès et/ou de démarrage de véhicule (Ctrl, CAN, Türöff1, Türöff2, Türöff3, MotAn, Ort-Kfz), un champ magnétique (B-Erz-1; B-Erz-2; B-x, B-y, B-z) généré par l'autre dispositif (Kfz) au moins partiellement par un dispositif de génération de champ magnétique (Spu-Erz) étant mesuré (Spu-Mess-x, Spu-Mess-y, Spu-Mess-z) par le terminal mobile (MS), et la distance (d) du terminal mobile (MS) par rapport à l'autre dispositif (Kfz) étant déterminée en prenant en compte le champ magnétique (Bx, By, Bz) mesuré par le terminal mobile (MS).
PCT/EP2017/050461 2016-01-26 2017-01-11 Détermination de distance par mesure de champ magnétique Ceased WO2017129403A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016201044.1 2016-01-26
DE102016201044.1A DE102016201044B4 (de) 2016-01-26 2016-01-26 Distanzbestimmung mit Magnetfeldmessung

Publications (1)

Publication Number Publication Date
WO2017129403A1 true WO2017129403A1 (fr) 2017-08-03

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Application Number Title Priority Date Filing Date
PCT/EP2017/050461 Ceased WO2017129403A1 (fr) 2016-01-26 2017-01-11 Détermination de distance par mesure de champ magnétique

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DE (1) DE102016201044B4 (fr)
WO (1) WO2017129403A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018207721B4 (de) * 2018-05-17 2020-03-26 Continental Automotive Gmbh Verfahren zur Positionsbestimmung eines Mobilgeräts relativ zu einem Fahrzeug, Zugangssystem sowie Programmelement
CN112859062B (zh) * 2021-01-19 2023-11-24 巍泰技术(武汉)有限公司 一种基于雷达的车辆排队长度检测方法及系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453347A1 (fr) * 1990-04-05 1991-10-23 GIAT Industries Procédé de détection d'un véhicule terrestre ferro-magnétique
DE10032936A1 (de) 2000-07-06 2002-02-07 Siemens Ag Vorrichtung und Verfahren zum Steuern einer Zugangsberechtigung und/oder einer elektronischen Wegfahrsperre für ein Kraftfahrzeug
WO2009055606A1 (fr) * 2007-10-25 2009-04-30 Frederick Mining Controls Llc Champ de marqueurs magnétiques interactifs pour systèmes de sécurité et système d'avertissement de proximité complexe
WO2012076389A1 (fr) 2010-12-09 2012-06-14 Huf Hülsbeck & Fürst Gmbh & Co. Kg Procédé de contrôle d'accès pour véhicules automobiles
DE102012201385A1 (de) 2012-01-31 2013-08-01 Continental Automotive Gmbh Zugangs- und/oder Startanordnung für ein Fahrzeug
DE102012206522A1 (de) * 2012-04-20 2013-10-24 Robert Bosch Gmbh Vorrichtung zum Signalisieren eines heranfahrenden Elektrofahrzeuges
DE102013224409A1 (de) * 2013-11-28 2015-05-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und verfahren zur erfassung einer position eines positionsgebers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5913820A (en) * 1992-08-14 1999-06-22 British Telecommunications Public Limited Company Position location system
DE102013209462A1 (de) * 2013-05-22 2014-11-27 Fraunhofer Portugal Research Selbstkalibrierendes Infrastruktursystem zur lokalen Positionserkennung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453347A1 (fr) * 1990-04-05 1991-10-23 GIAT Industries Procédé de détection d'un véhicule terrestre ferro-magnétique
DE10032936A1 (de) 2000-07-06 2002-02-07 Siemens Ag Vorrichtung und Verfahren zum Steuern einer Zugangsberechtigung und/oder einer elektronischen Wegfahrsperre für ein Kraftfahrzeug
WO2009055606A1 (fr) * 2007-10-25 2009-04-30 Frederick Mining Controls Llc Champ de marqueurs magnétiques interactifs pour systèmes de sécurité et système d'avertissement de proximité complexe
WO2012076389A1 (fr) 2010-12-09 2012-06-14 Huf Hülsbeck & Fürst Gmbh & Co. Kg Procédé de contrôle d'accès pour véhicules automobiles
DE102012201385A1 (de) 2012-01-31 2013-08-01 Continental Automotive Gmbh Zugangs- und/oder Startanordnung für ein Fahrzeug
DE102012206522A1 (de) * 2012-04-20 2013-10-24 Robert Bosch Gmbh Vorrichtung zum Signalisieren eines heranfahrenden Elektrofahrzeuges
DE102013224409A1 (de) * 2013-11-28 2015-05-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und verfahren zur erfassung einer position eines positionsgebers

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Publication number Publication date
DE102016201044A1 (de) 2017-07-27
DE102016201044B4 (de) 2017-12-21

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