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Traffic information providing apparatus

A traffic information and route technology, applied in traffic flow detection and other directions, can solve problems such as high GPS accuracy requirements, large sample calculation data, and users providing accurate guidance, so as to achieve accurate real-time traffic information and meet user experience.

Active Publication Date: 2015-03-11
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for a car turning right on this road section, since there is no need to wait for traffic lights, the user's driving experience may be that the road section is unblocked, which is contrary to the output results of existing traffic information providing devices
[0007] Due to the above reasons, the existing traffic information providing devices have the problems of high GPS accuracy requirements, large sample calculation data, and the inability to provide users with accurate guidance.

Method used

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Examples

Experimental program
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Embodiment approach 1

[0040] Next, preferred embodiment 1 of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals are assigned to the same components. Also, in the following description of the present invention, detailed descriptions of functions and configurations known in the art are omitted to avoid making the subject matter of the present invention unclear.

[0041] figure 1 It is the hardware structure diagram of Embodiment 1 of the present invention, such as figure 1As shown, the information providing system where the traffic information providing device is located includes a data storage unit 100 , a map matching unit 200 , a data filtering unit 300 , a traffic information prediction unit 400 , a communication device 600 , and a user terminal device 800 . Among them, the data storage unit 100, the map matching unit 200, the data filtering unit 300, and the traffic information predicting unit 400 constitute the traffic informat...

Deformed example 1

[0086] There are many cases where the trajectory of the floating car matches the route requested by the user. Figure 19 shows several typical situations. Figure 19(a) shows that the two routes completely match, and Figure 19(b) shows that the two routes partially match. Figure 19(c) shows that the two routes have two partial coincidences, that is, the partial coincidence can also be multiple partial coincidences of segments, and Figure 19(d) shows that there is only one link in the partial coincidence of the two routes.

[0087] In order to ensure the real-time performance of the calculation results, the timeliness should be considered when selecting the floating car data. It is preferable to select the data in the latest period through the time window to participate in the calculation of real-time traffic information. The route requested by the user can be a route calculated by the car navigator and uploaded to the central system; it can also be a route preset by the user in t...

Embodiment approach 2

[0097] Next, preferred embodiment 2 of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals are assigned to the same components as those described in the first embodiment.

[0098] Embodiment 2 of the present invention differs from Embodiment 1 mainly in that, in addition to the components in Embodiment 1, there is also a traffic information self-correcting unit, which can self-correct traffic information based on the user's requested route. The configuration of other parts is the same as that of Embodiment 1, and therefore, repeated explanations will be omitted as necessary.

[0099] Figure 12 It is a system hardware configuration diagram of Embodiment 2. Such as Figure 12 As shown, the information providing system where the traffic information providing device in Embodiment 2 is located includes a data storage unit 100, a map matching unit 200, a data filtering unit 300, a traffic information predicting uni...

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Abstract

The invention provides a traffic information providing apparatus which provides traffic information based on user request output which has high accuracy higher accuracy compared with that of prior art. The traffic information providing apparatus comprises an information receiving portion, a data storing portion, a map matching portion, a data filtering portion, and a traffic information prediction portion. The information receiving portion is used for receiving floating car data and user request route data. The data storing portion is used for storing the floating car data, the user request route data, and map data. The map matching portion is used for matching the floating car data with the user request route data to determine locating point data corresponding to the floating car data. Based on the locating point data and the user request route data, the data filtering portion is used for filtering the floating car data stored in the data storing portion, to acquire the floating car data corresponding to the locating point data which is completely or partially consistent with user request routes. Based on the acquired floating car data, the traffic information prediction portion is used for computing traffic information of the user request routes. At one moment, for a same section in different user request routes, the computed traffic information of the section is different.

Description

technical field [0001] The invention relates to the field of real-time traffic information collection, and more particularly, to a traffic information providing device and method for calculating road congestion degree. Background technique [0002] In recent years, with the development of urbanization, more and more cities use floating vehicle technology to collect traffic information and calculate the degree of road congestion. [0003] Here, "floating vehicle" refers to a vehicle that can provide information related to travel, such as location and speed, to the collection system. The so-called "floating vehicle technology" refers to the technology that uses the information provided by the floating vehicle to calculate the congestion level of the target road. . For example, in Japanese Patent 07-029098 (1995), U.S. Patent 6546330 (2003), Chinese Patent Application 200610112606.X, Chinese Patent Application 200710087223.6, Chinese Patent Application 200810112607.3, etc., ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
Inventor 刘勃李岚
Owner HITACHI LTD
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