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Working method of navigator

A technology of a navigator and a matching method, applied in directions such as road network navigators, can solve the problems of inaccurate matching, affecting the accuracy and real-time performance of navigation, and the inability of the navigator to distinguish main and auxiliary roads, achieving high reliability and simple steps. Effect

Active Publication Date: 2014-07-30
CHANGZHOU SHINCO AUTOMOTIVE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of road matching and navigation using GPS navigators, on the one hand, due to the GPS signals often have some errors or interference, the existing navigators are often unable to distinguish adjacent and parallel main and auxiliary roads, resulting in inability to accurately match them as their carrier The road where the vehicle (commonly known as: the current vehicle) is located, which in turn affects the accuracy and real-time performance of the navigation (that is, the existing navigator cannot accurately determine whether the current vehicle is on the main road in real time, or whether the current vehicle has left the main road. and enter the side road to be turned)

Method used

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  • Working method of navigator

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Embodiment 1

[0020] Such as figure 1 , the navigator of the present embodiment comprises: a CPU, a touch display screen connected to the CPU, a GPS unit connected to the CPU, a program database connected to the CPU, a camera connected to the CPU, and a map connected to the CPU database. The road path information is stored in the map database, and the road path information includes the attributes of each road section, which includes information such as whether the corresponding road section is a main road or an auxiliary road, and whether the main road and the auxiliary road are adjacent.

[0021] The working methods of the above-mentioned navigator include:

[0022] If the current vehicle is on a main road, and there is an exit leading to the side road on the right side of the main road within 2Km ahead of the current vehicle, the CPU of the navigator obtains the driving on the main road in real time through the camera arranged at the rear of the current vehicle road image to determine w...

Embodiment 2

[0027] On the basis of Embodiment 1, the navigator of this embodiment also includes: a turn signal lever sensor connected to the CPU, the turn signal lever sensor adopts a magnetic induction switch or a toggle switch connected to the CPU for detecting Whether the turn signal lever of the current vehicle is in zero position, left turn position or right turn position.

[0028] On the basis of embodiment 1, the matching method of the road main and auxiliary roads of the navigator of the present embodiment has the following variants:

[0029] The working method of the navigator of the present embodiment includes: if the current vehicle is on a main road, and there is an exit leading to an auxiliary road on the right side of the main road within 2Km ahead of the current vehicle, the CPU of the navigator passes through the The camera at the rear acquires the lane image on the main road in real time to determine whether the current vehicle is in the rightmost lane of the main road; i...

Embodiment 3

[0031]The matching method of the main and auxiliary roads of the navigator in this embodiment includes: if the current vehicle is on an auxiliary road, and there is a main road adjacent to the auxiliary road, and there is a road leading to the left side of the auxiliary road within 1.5Km ahead of the current vehicle. the entrance of the main road, then the CPU of the navigator obtains the lane image of the side road in real time through the camera arranged at the rear of the current vehicle to judge whether the current vehicle is in the leftmost lane of the side road; if the current vehicle In the leftmost lane of the auxiliary road, when the entrance (generally within 30 to 40m from the exit) is about to be reached, it is judged in real time whether the lane line in the image is deflected counterclockwise, if If the lane line deflects counterclockwise, the CPU judges that the current vehicle has entered the main road; the navigator matches the current driving path to the main ...

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Abstract

The invention relates to a navigator-based method for matching a main road and a side road of a road, which comprises the following steps: if a current vehicle is on a main road and an exit leading to a side road at the right side of the main road exists within 20Km ahead of the current vehicle, acquiring in real time, by a CPU (central processing unit) of a navigator, a traffic lane image on the main road through a camera arranged at the rear part of the current vehicle, so as to judge whether the current vehicle is in a traffic lane at the rightmost side of the main road; if the current vehicle is in the traffic lane at the rightmost side of the main road, when the current vehicle is about to arrive at the exit, judging in real time whether a traffic lane line in the image is subjected to clockwise deflection; if the traffic lane line is subjected to clockwise deflection, judging, by the CPU, that the current vehicle enters the side road; matching, by the navigator, the current drive path onto the side road; and if the traffic lane line is not subjected to clockwise deflection, judging that the current vehicle is still on the main road.

Description

[0001] This application is a divisional application, the application number of the parent application is: 201210173021.4, the name: the matching method of main and auxiliary roads of roads for navigators, and the application date: 2012-05-30. technical field [0002] The invention relates to the technical field of working methods of navigators, in particular to a method for matching main and auxiliary roads of roads by a navigator according to road lanes. Background technique [0003] Existing urban arterial roads often have main and auxiliary roads, such as the second, third and fourth ring roads in Beijing. The closed ring roads only allow motor vehicles, which are main roads; main roads generally include: elevated roads, expressways, etc. The auxiliary road is outside the closed area, next to the main road, and connected with other fork roads. [0004] In the process of road matching and navigation using GPS navigators, on the one hand, due to the GPS signals often have s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/30
CPCG01C21/30
Inventor 秦春达
Owner CHANGZHOU SHINCO AUTOMOTIVE ELECTRONICS