EP4627553A1 - Bestimmung einer position eines fahrzeugschlüssels - Google Patents
Bestimmung einer position eines fahrzeugschlüsselsInfo
- Publication number
- EP4627553A1 EP4627553A1 EP23812848.2A EP23812848A EP4627553A1 EP 4627553 A1 EP4627553 A1 EP 4627553A1 EP 23812848 A EP23812848 A EP 23812848A EP 4627553 A1 EP4627553 A1 EP 4627553A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle key
- vehicle
- tof1
- tof2
- tof3
- 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.)
- Pending
Links
Classifications
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- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0269—Inferred or constrained positioning, e.g. employing knowledge of the physical or electromagnetic environment, state of motion or other contextual information to infer or constrain a position
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
-
- 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
- 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
- G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S2205/01—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations specially adapted for specific applications
-
- 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
Definitions
- the invention relates to a method and device for determining a position of a vehicle key, in particular for a motor vehicle with a motor vehicle access system.
- Embodiments of the invention can in particular optimize a determination of a position of a vehicle key (in particular radio key/keyfob/smartphone) relative to a vehicle.
- a vehicle key in particular radio key/keyfob/smartphone
- Fig. 1 schematically simplifies a vehicle with several transceivers for determining a position of a vehicle key
- Fig. 2 two transceivers successfully measuring a distance to a vehicle key
- Fig. 5 Distances of transceivers that successfully measured a distance to a vehicle key and their distances to comparison points
- Fig. 6 Quadrants that are most likely to be correct as vehicle key position due to the smallest comparison point distance - sums of comparison point distances to transceivers that were able to successfully determine a vehicle key distance to the vehicle key
- Fig. 7 a determination of the correct position of a vehicle key with the aid of another transceiver arranged outside the symmetry axes of the vehicle, if this transceiver successfully measures a vehicle key distance.
- Fig. 1 shows a vehicle F (in particular a motor vehicle, in particular a car or truck) with several vehicle transceivers TR1, TR2, TR3, TR4, which determine their vehicle key distance ToF1, ToF2, ToF3, ToF4 to the vehicle key K (in particular for opening and/or starting the vehicle) by sending and receiving (e.g. UWB) signals to a vehicle key K.
- vehicle F in particular a motor vehicle, in particular a car or truck
- TR1, TR2, TR3, TR4 which determine their vehicle key distance ToF1, ToF2, ToF3, ToF4 to the vehicle key K (in particular for opening and/or starting the vehicle) by sending and receiving (e.g. UWB) signals to a vehicle key K.
- the distances can be taken into account, for example, by one or more propagation time measurements (of signal propagation times from the transceiver to the vehicle key and/or from the vehicle key to the transceiver), i.e. “time of flight” methods, in particular by so-called “ranging” in which, for example, two or three or more signal propagation times per transceiver are taken into account to determine a distance from the vehicle key to the transceiver.
- the signals can be, for example, so-called UWB or ultra wide band signals.
- a vehicle key position (relative to the vehicle, including left/right/front/back) can be determined by multilateration, e.g. trilateration, centroid algorithms, Levenberg/Marquardt algorithms, etc.
- the suspected incorrect (PW) or correct (PT) position PW, PT of a vehicle key K can be located as in Fig. 1 on a circle with the radius of a vehicle key distance ToF1 around a transceiver TR1 measuring this and also on a circle with the radius of a vehicle key distance ToF2 around another transceiver TR2 measuring this, and possibly in some cases also on a Circle with the radius of a vehicle key distance ToF3 around at least a third additional transceiver TR3 measuring this.
- the suspected incorrect (PW) or correct (PT) position of a vehicle key K is always located at an intersection point of at least two circles.
- determining the correct position PT of a vehicle key K is therefore easier than with only two intersecting circles (and successfully measured vehicle key distances ToF1, ToF2).
- vehicle transceivers TR1, TR2, TR3, TR4, (TR5) may be unsuccessful in determining their vehicle key distance ToF1, ToF2, ToF3 to a vehicle key K, respectively, due to interference such as reflections, attenuation, shadowing or other problems.
- the four comparison points V1, V2, V3, V4 can be, for example, the centers or corner points of quadrants Q1, Q2, Q3, Q4 and/or have the same distance from the spatial center of the vehicle F.
- comparison point V1, V2, V3, V4 its comparison point distances VD1-VD8 to transceivers TR1, TR2, which were able to successfully determine a vehicle key distance ToF1, ToF2 to the vehicle key K, can be added as a comparison point distance sum.
- Comparison point distances VD1-VD8 can be stored in a device (computer, control) of the vehicle F, and can be measured once, e.g. during construction of the vehicle, by ToF measurement or otherwise.
- two quadrants Q3, Q4 for whose respective comparison point V3, V4 the smallest comparison point distance sums (to transceivers TR2, TR3 which are the only ones to successfully measure vehicle key distances) are determined can be defined as selected quadrants, wherein then from the possible vehicle key positions PT, PW in selected quadrants Q3, Q4 based on vehicle key distances, the vehicle key position PT for which the smallest vehicle key distance ToF1 was determined by a transceiver TR1 (compared to the other transceivers which successfully determine a vehicle key distance) is assumed to be the actual vehicle key position PT.
- Fig. 7 shows another solution in which another transceiver TR5 is used, which is located outside the longitudinal axis of the vehicle F, i.e. here somewhat to the side and rather to the rear, and whose measurement of a vehicle key distance ToF5 can be used to determine the correct position PT of the vehicle key K if the additional transceiver TR5 is successful with the measurement of a vehicle key distance ToF5 (i.e. despite radio interference problems etc.).
- a pair of two transceivers TR1, TR2; TR3, TR4 are arranged symmetrically to the longitudinal center axis of the vehicle F.
- a pair of two transceivers TR2, TR3 are arranged symmetrically to the transverse center axis of the vehicle, which can result in the above-mentioned problems and solutions according to embodiments of the invention.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022212921.0A DE102022212921B3 (de) | 2022-12-01 | 2022-12-01 | Bestimmung einer Position (PT) eines Fahrzeugschlüssels (K) |
| PCT/DE2023/200220 WO2024114865A1 (de) | 2022-12-01 | 2023-11-02 | Bestimmung einer position eines fahrzeugschlüssels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4627553A1 true EP4627553A1 (de) | 2025-10-08 |
Family
ID=88414124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23812848.2A Pending EP4627553A1 (de) | 2022-12-01 | 2023-11-02 | Bestimmung einer position eines fahrzeugschlüssels |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4627553A1 (de) |
| CN (1) | CN120322810A (de) |
| DE (1) | DE102022212921B3 (de) |
| WO (1) | WO2024114865A1 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9860710B2 (en) * | 2015-09-08 | 2018-01-02 | Ford Global Technologies, Llc | Symmetrical reference personal device location tracking |
| JP7366816B2 (ja) | 2020-03-23 | 2023-10-23 | 株式会社東海理化電機製作所 | 制御装置、制御システム、及びプログラム |
-
2022
- 2022-12-01 DE DE102022212921.0A patent/DE102022212921B3/de active Active
-
2023
- 2023-11-02 WO PCT/DE2023/200220 patent/WO2024114865A1/de not_active Ceased
- 2023-11-02 EP EP23812848.2A patent/EP4627553A1/de active Pending
- 2023-11-02 CN CN202380082491.6A patent/CN120322810A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024114865A1 (de) | 2024-06-06 |
| CN120322810A (zh) | 2025-07-15 |
| DE102022212921B3 (de) | 2023-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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| 17P | Request for examination filed |
Effective date: 20250701 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: AUMOVIO GERMANY GMBH |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) |