NAVIGATION DEVICE, PROBE INFORMATION TRANSMISSION METHOD, COMPUTER-READABLE STORAGE MEDIUM THAT STORING PROBE INFORMATION TRANSMISSION PROGRAM, AND TRAFFIC INFORMATION GENERATION DEVICE
First Claim
1. A navigation device comprising:
- a vehicle position detection unit that detects a vehicle position;
a map information storage unit that stores map information;
a communication unit that communicates with an information distribution center;
a travel information collection unit that collects travel information for every unit distance section, including vehicle position information at a travel start time of the unit distance section, travel time information for the unit distance section, and travel link information at the travel start time of the unit distance section;
an intersection passage determination unit that determines whether the vehicle passed through an intersection based on the vehicle position and the map information;
an exit link identification unit that, when it is determined that the vehicle passed through an intersection by the intersection passage determination unit, identifies an exit link traveled after the vehicle passed through the intersection based on the vehicle position and the map information;
a probe information generation unit that, when it is determined that the vehicle passed through an intersection by the intersection passage determination unit, generates probe information linked to the travel information collected for every unit distance section included in a predetermined distance section until passage of the intersection, an entry link traveled before entering the intersection that is identified based on the travel information, and the exit link;
a lane stay determination unit that determines whether the vehicle stayed in the lane traveled at the travel start time of the predetermined distance section throughout the predetermined distance section based on the travel information included in the probe information; and
a transmission control unit that, when it is determined that the vehicle stayed in the traveling lane throughout the predetermined distance section by the lane stay determination unit, executes a control so as to transmit the probe information generated by the probe information generation unit to the information distribution center through the communication unit.
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Accused Products
Abstract
When a vehicle passes through an intersection that is stored in a collection target intersection database and for which direction-specific probe information is collected, a CPU of a navigation device generates a plurality of direction-specific probe information (entry link, exit link, section travel time, and the like) from a plurality of unit distance section information that is collected within a direction-specific traffic information acquisition section until the vehicle passes through the intersection, an entry link traveled before entering the intersection; and an exit link traveled after passing through the intersection, and transmits these to an information distribution center.
35 Citations
7 Claims
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1. A navigation device comprising:
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a vehicle position detection unit that detects a vehicle position; a map information storage unit that stores map information; a communication unit that communicates with an information distribution center; a travel information collection unit that collects travel information for every unit distance section, including vehicle position information at a travel start time of the unit distance section, travel time information for the unit distance section, and travel link information at the travel start time of the unit distance section; an intersection passage determination unit that determines whether the vehicle passed through an intersection based on the vehicle position and the map information; an exit link identification unit that, when it is determined that the vehicle passed through an intersection by the intersection passage determination unit, identifies an exit link traveled after the vehicle passed through the intersection based on the vehicle position and the map information; a probe information generation unit that, when it is determined that the vehicle passed through an intersection by the intersection passage determination unit, generates probe information linked to the travel information collected for every unit distance section included in a predetermined distance section until passage of the intersection, an entry link traveled before entering the intersection that is identified based on the travel information, and the exit link; a lane stay determination unit that determines whether the vehicle stayed in the lane traveled at the travel start time of the predetermined distance section throughout the predetermined distance section based on the travel information included in the probe information; and a transmission control unit that, when it is determined that the vehicle stayed in the traveling lane throughout the predetermined distance section by the lane stay determination unit, executes a control so as to transmit the probe information generated by the probe information generation unit to the information distribution center through the communication unit. - View Dependent Claims (2, 3, 7)
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4. A probe information transmission method comprising the steps of:
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detecting a vehicle position; reading map information; collecting travel information for every unit distance section, including vehicle position information at a travel start time of the unit distance section, travel time information for the unit distance section, and travel link information at the travel start time of the unit distance section; determining whether the vehicle passed through an intersection based on the vehicle position and the map information; identifying, when it is determined that the vehicle passed through an intersection at the intersection passage determination step, an exit link traveled after the vehicle passed through the intersection based on the vehicle position and the map information; generating, when it is determined that the vehicle passed through an intersection at the intersection passage determination step, probe information linked to the travel information collected at the travel information collection step for every unit distance section included in a predetermined distance section until passage of the intersection, an entry link traveled before entering the intersection that is identified based on the travel information, and the exit link; determining whether the vehicle stayed in the lane traveled at the travel start time of the predetermined distance section throughout the predetermined distance section based on the travel information included in the probe information generated at the probe information generation step; and executing, when it is determined that the vehicle stayed in the traveling lane throughout the predetermined distance section at the lane stay determination step, a control so as to transmit the probe information generated at the probe information generation step to an information distribution center.
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5. A computer-readable storage medium that stores computer-executable instructions, comprising the steps of:
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detecting a vehicle position; reading map information; collecting travel information for every unit distance section, including vehicle position information at a travel start time of the unit distance section, travel time information for the unit distance section, and travel link information at the travel start time of the unit distance section; determining whether the vehicle passed through an intersection based on the vehicle position and the map information; identifying, when it is determined that the vehicle passed through an intersection at the intersection passage determination step, an exit link traveled after the vehicle passed through the intersection based on the vehicle position and the map information; generating, when it is determined that the vehicle passed through an intersection at the intersection passage determination step, probe information linked to the travel information collected at the travel information collection step for every unit distance section included in a predetermined distance section until passage of the intersection, an entry link traveled before entering the intersection that is identified based on the travel information, and the exit link; determining whether the vehicle stayed in the lane traveled at the travel start time of the predetermined distance section throughout the predetermined distance section based on the travel information included in the probe information generated at the probe information generation step; and executing, when it is determined that the vehicle stayed in the traveling lane throughout the predetermined distance section at the lane stay determination step, a control so as to transmit the probe information generated at the probe information generation step to an information distribution center.
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6. A traffic information generation device comprising:
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a receiver unit that receives probe information from a vehicle for which travel information for every unit distance section is collected, the travel information including vehicle position information at a travel start time of the unit distance section, travel time information for the unit distance section, and travel link information at the travel start time of the unit distance section, with such probe information transmitted each time the vehicle passes through an intersection and linked to the travel information that is collected for every unit distance section included in a predetermined distance section until passage of the intersection, an entry link traveled before entering the intersection that is identified based on the travel information, and an exit link traveled after passing through the intersection; a lane stay determination unit that determines whether the vehicle stayed in the lane traveled at the travel start time of the predetermined distance section throughout the predetermined distance section based on the travel information included in the probe information; and a traffic information generation unit that, when it is determined that the vehicle stayed in the traveling lane throughout the predetermined distance section, generates lane-specific traffic information for the intersection based on the probe information.
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Specification