Method for rapidly locating current region of vehicle

Abstract

The invention discloses a method for rapidly locating the current region of a vehicle, comprising the following steps: dividing a map into a plurality of equal table cells; dividing each region according to the corresponding table cell and numbering, wherein each table cell comprises IDs (identity), configuration information and region index information of all the regions contained in the table cell, and the region index information refers to the longitude and latitude ranges of one region; and during retrieval, firstly judging which table cell the vehicle is located in the map, then reading the region index information contained in the table cell, judging to determine the regions of which the index ranges conform to the current position, and then reading concrete GPS (global positioning system) point sets of the regions to carry out accurate adjustment. By adopting the method disclosed by the invention, purposive and planned region monitoring from large to small and from simple to complex is realized. Besides, the retrieval speed is faster, and the efficiency is higher.

Description

technical field [0001] The invention relates to a method for quickly determining the area to which a vehicle belongs during driving. Background technique [0002] According to a variety of management information, urban roads can be divided into different areas, and the shapes of these areas are mostly irregular, and the location information of these irregular areas is usually composed of multiple GPS points. GPS vehicle-mounted terminals often need to manage and apply access to road areas in accordance with specific industry applications, so as to better meet the needs of monitoring and management. The realization of GPS vehicle-mounted terminal area monitoring needs to judge the area surrounded by the connection lines of multiple GPS points. In this way, it is necessary to read and operate the information of multiple GPS points every time an area is judged. If the terminal actively judges the entry and exit of the area, it is necessary to save a large amount of area locati...

AI Technical Summary

Problems solved by technology

The realization of GPS vehicle-mounted terminal area monitoring needs to judge the area surrounded by the connection lines of multiple GPS points. In this way, it is necessary to read and operate the information of multiple GPS points every time an area is judged. If the terminal actively judges the entry and exit of the area, it is necessary to save a large amount of area location information in the vehicle-mounted terminal, which will inevitably bring about efficiency problems in the management and retrieval of its data, and if the reading and retrieval process is too slow, it will affect the terminal. Real-time performance of regional monitoring

[0003] Usually, when locating the area to which the vehicle belongs, the area data is directly stored in the vehicle-mounted terminal in the order of increase without planning. When judging whether the vehicle is located in a certain area at the moment, the polling method without purpose is adopted. This kind of processing without any management will inevitably bring many meaningless operations, which will affect the efficiency of retrieval

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