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Travel time database generating device

A technology of travel time and database, which is applied in the direction of measuring device, vehicle position indication, traffic control system, etc., can solve the problems of increased communication times, longer communication time, less communication cost, etc., and achieve the effect of suppressing the number of communication

Inactive Publication Date: 2006-12-27
AISIN AW CO LTD
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Problems solved by technology

[0005] However, in the above-mentioned conventional system, each vehicle needs to send data to the traffic information center every time it passes through a predetermined road section, resulting in an increase in the number of communications. The amount of data in communication also increases, and the communication cost also increases
Of course, it is also conceivable to send the data together to reduce the number of communications, but at this time, since a large amount of data is sent at one time, the communication time becomes longer, which is not so effective in reducing the communication cost. In addition, the processing of a large amount of data takes a long time. time

Method used

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Embodiment Construction

[0014] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0015] figure 1 is a first diagram showing the transition of the current position of the vehicle according to the first embodiment of the present invention, figure 2 is a first diagram showing links included in the travel route of the vehicle according to the first embodiment of the present invention.

[0016] In this embodiment, the travel time database creation device has: a current position database that stores and accumulates data on the current position acquired from a plurality of vehicle-mounted devices throughout a predetermined period; and a data processing server that serves as a travel time database. The database creating means processes the data on the current position accumulated in the current position database, calculates the link travel time as the link data of each link, performs statistical processing on the calculated link travel time, and...

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Abstract

Travel time database generating systems, methods, and programs receive a vehicle's present location information and calculate a link travel time for each link included in the present location information. The systems, methods, and programs generate a travel time database including link travel times by estimating a travel route between the vehicle's present locations detected every predetermined time period and calculating a link travel time of links included in the estimated travel route.

Description

technical field [0001] The present invention relates to a device for creating a travel time database. Background technique [0002] Conventionally, in a navigation device mounted on a vehicle such as an automobile, an optimal route from a set departure point to a destination is found based on road map data, and displayed on a display device. At this time, the route with the shortest distance from the departure point to the destination or the route with the shortest required time is set. [0003] In addition, in order to be able to set an appropriate route in consideration of actual traffic volume and congestion, a system has been proposed in which each time a vehicle actually traveling on the road passes through a predetermined road section, the measured data obtained by passing the road Data such as the time required for sections are sent to the traffic information center (for example, refer to Patent Document 1). At this time, the traffic information center performs stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C21/26G08G1/00G08G1/13G09B29/00G09B29/10
CPCG01C21/34G08G1/0104G01C21/32
Inventor 石川裕记
Owner AISIN AW CO LTD
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