Classifications

• • 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
  • G01C21/34—Route searching; Route guidance
  • G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
  • G01C21/3492—Special cost functions, i.e. other than distance or default speed limit of road segments employing speed data or traffic data, e.g. real-time or historical

Definitions

• Road navigation aid systems are well known today, intended to determine the lowest cost road route, between a point of arrival and a point of departure at a given time, in order to assist a motor vehicle driver.
• the cost can be a cost in time, distance, money, road comfort or any other parameter.
• the road network is represented by a graph, composed of a plurality of nodes, linked in pairs by segments corresponding to portions of the road axis (street, road, motorway or other). A cost is assigned to each segment.
• the route determined by the system may prove to be less efficient, and therefore more expensive, than a personal journey, consisting of tips and tricks of intuitive optimization.
• WP waypoints
• the present invention proposes to combine the two computer and personal concepts.
• the invention relates to a method for assisting road navigation in which, to assist a motorist between two points of departure and arrival, - we update a database of elementary segments of itinerary and elementary journey times that we pair two by two,
• the waypoints are entered by their GPS coordinates.
• the crossing points are entered by the motorist, advantageously via a navigation aid server.
• the system allowing the implementation of the process object of the present request and which will be described below, is organized around a computing and road navigation assistance center 1.
• a database 2 containing elementary route segments matched to elementary journey times constantly updated according to traffic.
• the base 2 could be integrated into the computer 3 of the center 1.
• the data center 1 comprises a radiocommunication transmitter / receiver 4 of a radiocommunication network 5. It will be here and preferably a radiotelephony network cellular, but any other network allowing to communicate with motorists is possible.
• the center is connected to the network 5 by a base station 6.
• the network 5 is connected to a computer network 7, here the Internet, to which the center 1 is naturally also connected elsewhere.
• Network 7 is connected to a road navigation aid server 8, available to motorists who can use it as described below.
• Each motorist holding a navigation aid contract can enter into communication with the center 1, in particular using a radio transmitter / receiver 9 of the network 5, on board his vehicle 10 just as, in in this case, a GPS receiver 11, the communication taking place via a base station 12.
• the computing center 1 includes a member 13 for entering data communicated by motorists and a member 14 for alerting them if necessary.
• help center 1 communicates the journey time.
• the service can be automated and we can provide that the center
• the alerting device 14 alerts the motorist a determined time before the start time so that, taking into account the overall journey time, anticipated at the time of the calculation, the motorist can prepare, take his route and arrive at the arrival point, previously entered, in due time.
• the motorist can be alerted by any appropriate audio and / or video signal.
• Journey personalization can be calculated over several routes if motorists wish to be offered a comparison of journey time or if the shortest overall journey time is communicated to them.

Landscapes

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

Applications Claiming Priority (3)

Publications (1)

Family

ID=8864305

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (10)

Family Cites Families (3)

• 2001
  • 2001-06-14 FR FR0107791A patent/FR2826111B1/fr not_active Expired - Fee Related
• 2002
  • 2002-06-14 EP EP02758509A patent/EP1402233A1/de not_active Withdrawn
  • 2002-06-14 WO PCT/FR2002/002059 patent/WO2002103291A1/fr not_active Ceased

Non-Patent Citations (1)

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