A route guidance system and method for urban complex traffic environments based on location tags

Abstract

The invention provides a city complex traffic environment path guide system and method based on locating labels. The method comprises the steps: (101) locating labels of two-dimension codes or classification codes and the like are arranged on the peripheries and vital lines of complex road junctions, interchanges, comprehensive transportation junctions and commercial building clusters; (102) the locating labels of the two-dimension codes or the classification codes and the like are linked to the physical positions of the locating labels arranged in realistic scenes; (103) the locating labels in the realistic scenes are scanned through a handheld or vehicle-mounted terminal, so that locating or path planning based on locating is achieved. The step (101) further comprises the step (101-1) for generating the locating labels; the step (101-2) for constructing a traffic network topology of a city complex environment by the adoption of a three-dimensional model capable of distinguishing nodes; and the step (101-3) of distributing different weighted values to different road sections, then obtaining an optimal edge dominating set based on the obtained network topology and the road section weighted values, and arranging the locating labels for the optimal edge dominating set.

Description

technical field [0001] The present invention relates to an urban traffic information service system and method, in particular to a positioning tag-based route guidance service system and method for urban complex traffic environments. Background technique [0002] With the rapid development of the city, there are more and more complex urban traffic environments such as complex intersections, interchanges, comprehensive transportation hubs, and commercial building groups, which have caused great problems for the public to travel. The demand for information services is getting stronger and stronger. The main problems of route guidance information services in urban complex traffic environments are: first, the location of travelers is difficult to locate accurately, and second, the problem of route guidance from the start point to the end point. [0003] In order to solve the above problems, the general approach is to use smart handheld terminals and satellite positioning techno...

AI Technical Summary

Problems solved by technology

The main problems of route guidance information service in urban complex traffic environment are: first, it is difficult to accurately locate the traveler's location, and second, the problem of route guidance from the starting point to the end point

[0006] 1) For satellite positioning, the positioning accuracy is difficult to guarantee due to problems such as satellite signal strength and surrounding tall buildings; for indoor wireless positioning, the positioning accuracy is also low, and the handheld terminal or vehicle terminal needs to have a wireless connection module. Wireless Access Devices Stay Connected

For example, it can be difficult to tell whether a traveler is on or off an interchange

[0007] 2) If the accuracy of positioning is improved by adding roadside enhancement equipment for outdoor satellite positioning or indoor wireless access equipment, the construction cost will be greatly increased, and it is difficult to apply it on a large scale in real life

[0008] 3) When entering the room from the outside or going out of the room, the positioning and guidance need to be switched between satellite positioning and wireless positioning, which will cause some inconvenience to the user. At the same time, the handheld terminal or vehicle terminal also needs to have a satellite positioning module And have the same type of wireless communication module as the building's wireless network (such as wireless local area network, radio frequency identification, ultrasonic, infrared, etc.)

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