Traffic probe in-vehicle map-based process to reduce data communications and improve accuracy
First Claim
1. A method of acquiring and storing data useful for generating traffic information, the method comprising:
- combining a plurality of sequential map segments associated with a first street to provide a superlink;
configuring a processing center, which comprises;
a computing device, comprising a memory;
a wireless transmitter connected to said computing device; and
a wireless receiver connected to said computing device;
providing a plurality of probe vehicles, wherein each of said probe vehicles are traveling on map segments of said superlink, said probe vehicles each comprising;
a global positioning system unit;
an on-board data processor;
an on-board vehicle speed sensor connected to said processor;
a wireless transmitter connected to said processor;
partitioning the map segments upon which said probe vehicles are traveling into a plurality of connected segments;
assigning each particular connected segment a unique identifier name;
selecting the particular connected segment on which each particular vehicle is traveling from said plurality of connected segments;
determining an estimate of the time required for each vehicle to traverse a particular selected connected segment upon which it travels;
transmitting data that comprises said unique identifier name and time required for each vehicle to traverse each of such particular connected segments to said processing center; and
storing said data in said memory.
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Accused Products
Abstract
A system and method for combining sequential map segments to aggregate, analyze, and display traffic data collected from one or more probe vehicles located on one or more segments of road are provided. Vehicle travel data generation and storage are provided by a data processing center, partitioning a road into a plurality of connected segments, and calculating an estimate of the time required for a probe vehicle to traverse a particular segment. The calculations are performed by a processor that may be on-board the probe vehicle, and the resulting data are transmitted to the processing center, at which they are aggregated and optionally transmitted to one or more subscriber vehicles.
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Citations
30 Claims
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1. A method of acquiring and storing data useful for generating traffic information, the method comprising:
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combining a plurality of sequential map segments associated with a first street to provide a superlink; configuring a processing center, which comprises; a computing device, comprising a memory; a wireless transmitter connected to said computing device; and a wireless receiver connected to said computing device; providing a plurality of probe vehicles, wherein each of said probe vehicles are traveling on map segments of said superlink, said probe vehicles each comprising; a global positioning system unit; an on-board data processor; an on-board vehicle speed sensor connected to said processor; a wireless transmitter connected to said processor; partitioning the map segments upon which said probe vehicles are traveling into a plurality of connected segments; assigning each particular connected segment a unique identifier name; selecting the particular connected segment on which each particular vehicle is traveling from said plurality of connected segments; determining an estimate of the time required for each vehicle to traverse a particular selected connected segment upon which it travels; transmitting data that comprises said unique identifier name and time required for each vehicle to traverse each of such particular connected segments to said processing center; and storing said data in said memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of generating and communicating traffic data, the method comprising:
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combining a plurality of sequential map segments associated with a first street to provide a superlink; configuring a processing center, which comprises; a computing device, comprising a memory; a wireless transmitter connected to said computing device; and a wireless receiver connected to said computing device; providing a plurality of probe vehicles, wherein each of said probe vehicles are traveling on map segments of said superlink, said probe vehicles each comprising; a global positioning system unit; an on-board data processor; an on-board vehicle speed sensor connected to said processor; and a wireless transmitter connected to said processor; providing one or more subscriber vehicles, each having a wireless receiver; partitioning the map segments upon which said probe vehicles are traveling into a plurality of connected segments; assigning each particular connected segment a unique identifier name; selecting the particular connected segment on which each particular vehicle is traveling from said plurality of connected segments, for each stretch of road upon which a particular vehicle is traveling; determining an estimate of the time required for each vehicle to traverse a particular selected connected segment upon which it travels; transmitting data that comprises said unique identifier name and time required for each vehicle to traverse each particular connected segment to said processing center; aggregating data received from said probe vehicles in said computing device; generating traffic data based on the aggregated data; and transmitting traffic data from the wireless transmitter of the processing center to the wireless receiver(s) of one or more subscriber vehicles. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of generating and storing vehicle travel data, the method comprising:
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configuring a processing center, which comprises; a computing device comprising a memory; a wireless transmitter connected to said computing device; and a wireless receiver connected to said computing device; providing a probe vehicle, wherein said probe vehicle is traveling on a road, said probe vehicle comprising; a global positioning system unit; an on-board data processor; an on-board vehicle speed sensor connected to said processor; and a wireless transmitter connected to said processor; partitioning said road into a plurality of connected segments; selecting a particular segment from said plurality of connected segments of said road, assigning said particular segment a unique identifier name; calculating an estimate of the time required for said probe vehicle to traverse said particular segment, said calculation being performed by the on-board processor of said probe vehicle; transmitting said unique identifier name and time required for said probe vehicle to traverse said particular segment, from said probe vehicle to said processing center; and storing said identifier name and time in said memory. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification