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Traffic information system

A technology of traffic information and driving history, which is applied in the field of traffic information systems, can solve the problems of reduction and inability to solve the data size of vehicle driving history records at the same time, and achieve the effect of reducing communication costs

Inactive Publication Date: 2008-10-01
HITACHI LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0012] In the above-mentioned known technology, there is the following problem: the reduction of the data size of the vehicle driving history data and the improvement of the processing speed based on the reduction of the processing load cannot be solved at the same time.

Method used

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  • Traffic information system
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Embodiment 1

[0031] figure 1 The traffic information system shown includes: a driving history record data receiving unit 101, which receives, from the probe car 2, an interval meter for a long time or a predetermined driving distance in a real-time processing application for generating traffic information to be transmitted. The driving history record data measured; The driving history record database 102 stores the driving history record data received by the driving history record data receiving mechanism 101; the map matching mechanism 103 uses the driving history record stored in the driving history record database 102 Data specifying which road section each vehicle is traveling on at the time when the vehicle position is measured; the travel route determination unit 104 determines the travel route of the vehicle based on the processing results of the map matching unit 103 by using a weighted model of the route cost Traffic information data generation mechanism 105, it generates traffic ...

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Abstract

A traffic information system including a travel history database retaining the data on the travel history of vehicle measured at a constant temporal or running interval; a link cost weighting pattern database for storing patterns for weighting the link costs of road links, used in the determination of the travel paths of vehicles; a vehicle ID / link cost weighting pattern set database retaining the data representing the matching of the vehicle IDs with their associated link cost weighting patterns used to determine the travel paths of the vehicles; a link cost weighting pattern selection unit selecting the patterns for weighting the link costs used to determine the travel paths of the vehicles on the basis of the vehicle IDs; and a vehicle ID / link cost weighting pattern matching unit recording the data representing the matching of the vehicle IDs with their associated link cost weighting patterns.

Description

technical field [0001] The present invention relates to a traffic information system that generates and transmits traffic information data using vehicle travel history record data. Background technique [0002] A system (probe traffic information system) for generating traffic information data using travel history data of a vehicle is being developed. When the system generates and transmits traffic information data related to the road on which the vehicle travels, by increasing the processing speed of the system to speed up the update frequency of the traffic information data, it is possible to provide high-immediacy traffic information data. By using an in-vehicle navigation system or the like that receives and utilizes the traffic information data, the user can know in advance the congestion state of the road, etc., and can set a route that can avoid the congested section. [0003] In such a traffic information system, since the traffic information data is generated based...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C21/26G01C21/34G01C21/36G08G1/0969G09B29/00G09B29/10
CPCG08G1/0104G08G1/20
Inventor 君田和也横田孝义谷越浩一郎
Owner HITACHI LTD
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