Design method of points of interest of vehicle navigation system

Abstract

The invention relates to a design method of the points of interest of a vehicle navigation system. The method comprises the following steps: the forms of two dynamic linked lists are located, namely a broadcast linked list and a point location linked list; the point location linked list contains the broadcast linked list; the point location linked list contains the longitude and latitude data of all the points of interest, the broadcast linked list contains the longitude and latitude data of the points of interest to be warned early; the longitude and latitude data of the points of interest are converted to the integer mode; the localization information of the vehicle is updated instantly, the points of interest in the broadcast linked list are started to compare; when the data of the points of interest completely are monitored to satisfy the set range, the vehicle is shown to enter the early warning range; and after the vehicle enters the early warning range, the information of the broadcast linked list is directly imported in the point location linked list, and the early warning information is prompted through an external loudspeaker. By using the method of the invention, the location speed of the points of interest is fast and the early warning time of the vehicle navigation system is shortened extremely.

Description

【Technical field】 [0001] The invention relates to computer software, in particular to a method for designing interest points of a vehicle navigation system. 【Background technique】 [0002] Car navigation systems have become standard equipment in premium vehicles. Typically, such systems receive GPS (Global Positioning System) satellite radio signals. These radio signals are received by the vehicle's GPS antenna and provided to the navigation computer in the vehicle. The computer processes the data received, as well as the data obtained by the sensors, to determine the current position of the vehicle. [0003] To provide navigation functionality, a navigation system uses one or more detailed databases including bitmap images of routes, information on signposts, waypoints, etc., as well as data representing physical characteristics such as geographic areas and points of interest. [0004] At present, traditional car navigation systems use a relatively simple polling method ...

AI Technical Summary

Problems solved by technology

In this way, when there are many points of interest, the conditions of the query points are more complicated, which will make the program execution efficiency low, slow, and consume a lot of system resources, thus seriously affecting the early warning function of the relevant points of interest.

For example, when broadcasting early warning at a fixed point, a red light at a certain intersection is used as a point of interest, and the warning prompt is often received only when the car has reached the point of interest, and it is meaningless to receive the warning prompt at this time, which makes the navigation system give early warning The effect of the function is greatly reduced

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