EP1190217A1 - Emission de position de vehicule relative a une base de donnees de cartes - Google Patents

Emission de position de vehicule relative a une base de donnees de cartes

Info

Publication number
EP1190217A1
EP1190217A1 EP00943284A EP00943284A EP1190217A1 EP 1190217 A1 EP1190217 A1 EP 1190217A1 EP 00943284 A EP00943284 A EP 00943284A EP 00943284 A EP00943284 A EP 00943284A EP 1190217 A1 EP1190217 A1 EP 1190217A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
location
map database
map
road network
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Withdrawn
Application number
EP00943284A
Other languages
German (de)
English (en)
Inventor
Michael Mouser
Larry E. Ii Spencer
John D. Begin
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.)
Magellan DIS Inc
Original Assignee
Magellan DIS Inc
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 Magellan DIS Inc filed Critical Magellan DIS Inc
Publication of EP1190217A1 publication Critical patent/EP1190217A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B60R25/30—Detection related to theft or to other events relevant to anti-theft systems
    • B60R25/33—Detection related to theft or to other events relevant to anti-theft systems of global position, e.g. by providing GPS coordinates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments
    • G01C21/30—Map- or contour-matching
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
    • G08G1/127—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams to a central station ; Indicators in a central station
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2556/00—Input parameters relating to data
    • B60W2556/45—External transmission of data to or from the vehicle
    • B60W2556/50—External transmission of data to or from the vehicle of positioning data, e.g. GPS [Global Positioning System] data

Definitions

  • the present invention relates generally to vehicle location systems and more particularly to a vehicle location system where the vehicle position is transmitted to a remote location with reference to a map database.
  • GPS Global Positioning System
  • WGS-84 World Geodetic System - latitude and longitude
  • ECEF earth-centered-earth-fixed
  • the position of the vehicle is transmitted to the remote location in terms of these reference frames, e.g. latitude and longitude.
  • the dispatcher (or other person at the remote location) may then attempt to convert the latitude/longitude information to a street address or intersection. This is inadequate for several reasons.
  • the position information transmitted from the vehicle includes the error in the GPS position solution.
  • the dispatcher (or a computer at the remote location) must interpret the latitude/longitude data and convert it to the road network (i.e. street address or street intersection). As a result, as far as the dispatcher can determine, there may be many streets or many addresses at which the vehicle could be located.
  • the present invention provides an improved method and system for transmitting the position of a vehicle to a remote location.
  • the position of the vehicle is calculated at the vehicle relative to a map database using known techniques used in vehicle navigation systems.
  • the vehicle navigation system calculates its position relative to the map database using map matching prior to sending that calculated position to the remote location, thus providing a more accurate calculation of the vehicle position.
  • the position of the vehicle is then transmitted to the remote location in terms relative to the map database. In other words, the position of the vehicle is communicated to the remote location in terms of the road network, rather than simply latitude and longitude.
  • an elaborate system of roads and highways are elaborate system of roads and highways.
  • the source, destination, as well as the entire route are all most conveniently described in terms of the road network.
  • Mailing addresses are in terms of the road network.
  • the vehicle location is presented to the dispatcher (or other person at the remote location) in terms of the road network initially.
  • Vehicle location for services such as fleet management, emergency notification, autonomous vehicle location, etc. can therefore benefit greatly from the transmission of the vehicle position relative to the road network.
  • FIG. 1 is schematic of the vehicle location system of the present invention. DESCRIPTION OF A PREFERRED EMBODIMENT
  • the vehicle location system 10 of the present invention is shown schematically in Figure 1.
  • the vehicle location system 10 includes a vehicle navigation system 20.
  • the navigation system 20 includes a CPU 22 connected to a display 24, such as a high resolution LCD or flat panel display.
  • the CPU 22 is also connected to a user input device 26 such as a mouse, keyboard, key pad, remote device or microphone.
  • the user input device 26 is preferably a keypad comprising a plurality (preferably eight) of direction arrows which operate together with the display 24 to enter text, numbers, symbols, etc. or other alphanumeric characters.
  • the display 24 can be a touch screen display.
  • the user input device 26 further provides inputs for a user to request emergency assistance and/or to selectively transmit the current location of the navigation system 20 to a remote location.
  • the CPU 22 includes at least one audio speaker 28 outputting sound from the CPU 22 and a storage device 30, such as a hard drive 30 and/or CD ROM, connected to the CPU 22.
  • the storage device 30 contains a database 32 including a map of the road network in the area to be traveled including road segments, sub-segments, road intersections and street addresses and the latitude and longitude of the street segments, sub-segments, road intersections, and street addresses.
  • the database 32 also includes the locations of potential destinations, such as addresses, hotels, restaurants, or previously stored locations.
  • the software for the CPU 22, including the graphical user interface, route guidance, operating system, position-determining software, etc may also be stored in storage device 30 and/or in RAM, ROM, flash memory, etc.
  • the navigation system 20 also includes position determining devices, such as a GPS receiver 35, a gyroscope 36, a compass 38, and a multi-axis accelerometer 40, all connected to the CPU 22 (connections not shown for simplicity). Suitable position and motion determining devices are well known and are commercially available. Different combinations or subsets of these devices could be used, as well as additional position-determining devices, such as a wheel speed sensor or speedometer.
  • the navigation system 20 is installed in a vehicle 34. Using information from the position determining devices, the system 20 continuously matches measured vehicle motion to the map database 32. An optimal estimate of the position of the vehicle 34 on the road network in the map database 32 (called the map-matched position) is then computed.
  • the current location of the vehicle 34 may be displayed on display 24 relative to the surrounding roads.
  • Many techniques are known for the integration of information from the various position- determining devices and map-matching. Any of these techniques for determining the position of the vehicle 34 relative to the database 32 of roads can be used, as the specific techniques form no part of the present invention.
  • the user can select a destination relative to the database 32 of roads utilizing the input device 26 and the display 24.
  • the navigation system 20 calculates and displays a recommended route directing the driver of the vehicle 34 to the desired destination.
  • the navigation system 20 displays turn-by-turn instructions on display 24 along with corresponding audible turn- by-turn instructions via speaker 28, guiding the driver to the desired destination.
  • the navigation system 20 further includes a transceiver 44, such as (or similar to) a cellular phone, PCS, satellite phone, RF, microwave or other wireless communication system.
  • the transceiver 44 is connected to the CPU 22, which includes the appropriate communication software, such as Internet software.
  • the transceiver 44 communicates with a plurality of complementary transceivers 46 (one shown) such as cell towers or a satellite.
  • the transceiver 46 is connected via telephone lines, additional wireless links (such as cell towers or satellites), and/or the Internet to a second location 50 remote from the vehicle 34 and generally comprising a CPU 52, preferably with graphical user interface and mass storage including the database 32 (or similar).
  • the navigation system 20 of the present invention determines the map-matched position of the vehicle 34 continuously.
  • the navigation system 20 then transmits the map-matched position of the vehicle 34 to the second location 50. This can be done periodically, in the case of a fleet monitoring system, or when necessary in an emergency assistance request system. Transmission of the map-matched position requires little bandwidth and can be done on an 'as-needed' basis whereas the alternative of transmitting all the 'real-time' sensor data (acceleration, turn rate, etc.) would generally be impractical.
  • the position information transmitted by the navigation system 20 to the second location 50 is preferably with reference to the map database 32, such as a street address, road segment, sub-segment, intersection or a distance and direction from a street address, road segment, sub-segment or intersection (e.g. 1-75, 2 miles north of I- 696).
  • the second location 50 includes the same map database 32, then the progress of the vehicle 34 can be monitored, such as on a display.
  • the second location 50 is an emergency assistance dispatch station, then emergency assistance can be dispatched to the vehicle location with reference to the road network, i.e. a street address, intersection or a distance and direction from a street address or intersection.
  • the second location 50 could be another vehicle, which would include the CPU 52.
  • the navigation system 20 of the present invention provides more accurate position information to the second location 50 because the position is calculated using map-matching. Further, the information is more useful and transmitted more efficiently, because it is given with reference to the map database 32 and consequently, with reference to the real world road network.
  • exemplary configurations described above are considered to represent a preferred embodiment of the invention. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.
  • the navigation system 20 is preferably a MagellanTM 750NAVTM navigation system, with the addition of the transmission of the vehicle location in terms of the map database. Alphanumeric labels on method steps in the claims below are for convenience of reference by dependent claims, and do not signify a required order of performance of the method steps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Navigation (AREA)
  • Instructional Devices (AREA)

Abstract

La présente invention concerne un procédé et un système améliorés destinés à émettre la position d'un véhicule à destination d'un emplacement distant. La position calculée est celle du véhicule par rapport à une base de données de cartes. Dans une réalisation de la présente invention, le système de navigation du véhicule calcule sa position par rapport à une base de données de cartes en utilisant une superposition sur carte préalablement à l'envoi de la position calculée à l'emplacement distant. La position du véhicule est alors émise vers l'emplacement distant en termes du réseau routier de la base de données de cartes.
EP00943284A 1999-07-02 2000-06-29 Emission de position de vehicule relative a une base de donnees de cartes Withdrawn EP1190217A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US14210799P 1999-07-02 1999-07-02
US142107P 1999-07-02
PCT/US2000/017914 WO2001002807A1 (fr) 1999-07-02 2000-06-29 Emission de position de vehicule relative a une base de donnees de cartes

Publications (1)

Publication Number Publication Date
EP1190217A1 true EP1190217A1 (fr) 2002-03-27

Family

ID=22498583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00943284A Withdrawn EP1190217A1 (fr) 1999-07-02 2000-06-29 Emission de position de vehicule relative a une base de donnees de cartes

Country Status (3)

Country Link
EP (1) EP1190217A1 (fr)
AU (1) AU5777900A (fr)
WO (1) WO2001002807A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3058942B2 (ja) * 1991-06-27 2000-07-04 三菱電機株式会社 ナビゲーション装置
US6212472B1 (en) * 1997-09-04 2001-04-03 Visteon Technologies, Llc Method and apparatus for displaying current vehicle position
DE69736905T2 (de) * 1997-09-17 2007-09-06 Magellan Dis Inc., Rochester Hills Verfahren zum bereitstellen von textualer beschreibung einer entfernten fahrzeugposition

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0102807A1 *

Also Published As

Publication number Publication date
AU5777900A (en) 2001-01-22
WO2001002807A8 (fr) 2001-03-29
WO2001002807A1 (fr) 2001-01-11

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