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Path navigation method and device

A technology of route navigation and intersection, applied in the field of navigation, can solve the problems of high navigation error rate and hysteresis, and achieve the effect of good matching effect, no hysteresis, and improved accuracy.

Active Publication Date: 2013-07-17
NAVINFO
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AI Technical Summary

Problems solved by technology

[0011] Embodiments of the present invention provide a route navigation method and device, which are used to solve the problems of high navigation error rate or hysteresis in existing route navigation methods when vehicles are driving at intersections

Method used

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  • Path navigation method and device

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Embodiment Construction

[0051] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0052] Such as figure 1 As shown, the embodiment of the present invention provides a route navigation method, including the following steps S11-S15:

[0053] S11. Monitoring whether the distance between the vehicle and the intersection in front reaches a preset distance.

[0054] Wherein, the preset distance may specifically be 100 meters, 200 meters or the like.

[0055] Specifically, for example figure 2 As shown, the intersection can be simplified as a node 1 (the center point of the intersection) and multiple Link2s (each Link2 corresponds to a fork), and the distance between the car and the node 1 is regarded as the distance between the car and the intersection ahead ; When it is detected that the distance between the car and ...

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Abstract

The invention provides a path navigation method and a path navigation apparatus used for solving problems of high navigation error rate or lagging of an existing path navigation method when a vehicle travels at an intersection can be solved. The method comprises the steps that: whether the distance between the vehicle and the intersection ahead reaches a preset distance is monitored; when the distance between the vehicle and the intersection ahead reaches a preset distance, guide arrows passed by the vehicle when the vehicle travels towards the intersection ahead are monitored; whether the vehicle crosses a stop line of the intersection ahead is monitored; when the vehicle crosses a stop line of the intersection ahead, whether a valid guide arrow exists in monitored guide arrows is determined; when a valid guide arrow exists in monitored guide arrows, an expected direction of the vehicle is determined according to the last monitored valid guide arrow. With the technical scheme provided by the invention, intersection path navigation accuracy is improved, lagging is prevented, and better matching effect is provided.

Description

technical field [0001] The invention relates to the technical field of navigation, in particular to a route navigation method and device. Background technique [0002] Map path matching is to use GPS system, gyroscope and other positioning devices to fuse and evaluate the received positioning signal and other signals, and then match with the abstracted topological road network in the navigation electronic map to locate the vehicle in the electronic map. The most likely link that represents the current road. [0003] The path matching function is the basic core function of the car navigator, and the wrong location will cause other navigation functions to fail or provide wrong information to the driver. [0004] One of the technical difficulties of path matching is that when a car is driving at an intersection, due to the accuracy of the positioning signal and the accuracy of the electronic map, as well as the difficulty of predicting the driving direction of the driver, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/34
Inventor 李晁政
Owner NAVINFO
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