Route search method and apparatus therefor

Abstract

The invention relates to a method and an apparatus for route searching comprising: calculating position information with GPS / DR sensor when received route searching request from user, and calculating corresponding route of specific distance by taking the calculation result of position information as center, and confirming whether having highway in the calculated route; transmitting current position confirming request to user when having highway in corresponding route, getting out corresponding route of current position confirming information, setting and outputting route guiding information.

Description

(1) Technical field [0001] The invention relates to a route search method and its device technology which can search for an accurate starting position when the route is searched by a route guidance service system. (2) Background technology [0002] Generally speaking, after the vehicle guidance device basically grasps the shortest route and traffic conditions from the starting point to the destination of the vehicle, based on the above-mentioned conditions, it calculates the optimal operating route and transmits this information to the driver to guide the vehicle. Take the best route. [0003] The above-mentioned vehicle guidance device will continuously detect the vehicle position and monitor whether the vehicle deviates from the optimal route. If the vehicle deviates from the optimal route, it will prompt the driver to deviate from the optimal route so that it can always drive on the optimal route. [0004] The above-mentioned vehicle guidance device adopts a route searc...

AI Technical Summary

Problems solved by technology

That is, in fact the vehicle can only move along its main route, line 2, but since the result of the search for the route is line 1, the vehicle will deviate from the optimal route at the point where the two routes diverge, and this error will It has a great impact on the route search device, which determines the success or failure of the service based on the accuracy of the vehicle location information. Because it receives wrong route information in the remote transmitter system that pays the information usage fee and receives traffic information, etc. , and when departing from the optimal route, the charging information will be lost, and the charging information will be required to be provided again frequently, which will bring huge economic losses to the service provider

[0012] That is to say, if the above-mentioned existing route search device directly uses the map matching processing information, then on two routes with similar positions and parallels, there will be quite serious errors in the map matching processing results.

[0013] In addition, the map matching processing method that improves the accuracy of the current position by managing the accuracy of the digital map, reducing the error of the GPS+DR sensor, moving the map matching processing method, and the effect of reducing the error of the starting position is also very limited

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