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Navigation method and device

A navigation method and three-dimensional road technology, applied in the field of navigation technology, can solve problems such as inaccurate judgment and driving errors

Inactive Publication Date: 2010-06-09
AUTONAVI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the vehicle needs to pass through the intersection to reach the next road section, it will drive according to the route drawn by the route plan. Since the navigation display window displays a two-dimensional flat electronic map, it cannot accurately and vividly describe the positional relationship between the roads connected by the intersection, such as Main roads and auxiliary roads, entrances and exits, uphill and downhill roads, and horizontal roads make it impossible to accurately determine which road is the next section of the route planning, resulting in driving errors

Method used

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  • Navigation method and device
  • Navigation method and device

Examples

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Embodiment 1

[0017] This embodiment provides a navigation method. Such as figure 1 shown, including the following steps:

[0018] Step 11. When the vehicle is a predetermined distance away from the nearest intersection ahead, acquire the three-dimensional road data of the intersection.

[0019] Wherein, when the vehicle is at a predetermined distance from the nearest intersection in front, in practical applications, the following steps can be used to judge:

[0020] 1. Determine the current position coordinates of the vehicle through GPS (Global Position System, Global Positioning System);

[0021] 2. Carry out map matching through the current position of the vehicle to determine the road where the current vehicle is located;

[0022] 3. Determine the nearest intersection ahead according to the road where the vehicle is located;

[0023] 4. Judging whether the distance between the current position of the vehicle and the nearest intersection in front reaches the predetermined distance, ...

Embodiment 2

[0033] Such as figure 2 As shown, this embodiment discloses a navigation device 30 . The navigation device 30 includes: an acquisition unit 31, used to acquire the three-dimensional road data of the intersection when the vehicle is at a predetermined distance from the nearest intersection ahead; a navigation unit 32, for navigating according to the three-dimensional road data; a formation unit 33, for The three-dimensional road data is formed before the step of obtaining the three-dimensional road data, and the three-dimensional road data is associated with its position in the electronic map; the intersection database 34 is used for storing the three-dimensional road data. The acquisition unit 31 includes: a first determination unit 311, used for the navigator to determine the current position of the vehicle through the global positioning system; a second determination unit 312, used for determining the road where the current vehicle is located through map matching; a third d...

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Abstract

The embodiment of the invention provides a navigation method and a navigation device, which can provide junction three-dimensional space information and driving direction information when a vehicle is driven to a preset distance range away from the front nearest junction so as to reduce driving error. The navigation method comprises the steps of: acquiring the three-dimensional road data of the junction when the vehicle is in the preset distance away from the front nearest junction; and navigating according to the three-dimensional road data. The navigation device comprises an acquiring unit and a navigation unit, wherein the acquiring unit is used for acquiring the three-dimensional road data of the junction when the vehicle is in the preset distance away from the front nearest junction; and the navigation unit is used for navigating according to the three-dimensional road data. According to the embodiment of the invention, each junction is provided with the three-dimensional road data which accurately reflects the actual condition of the junction, so the vehicle can be accurately driven.

Description

technical field [0001] The present invention relates to a navigation technology, in particular to a navigation method and device. Background technique [0002] During the navigation process, when the vehicle is driving to an intersection, it is usually necessary to further determine the road conditions at the current intersection, such as a crossroad, a T-junction, or the main road conditions at the intersection, side road conditions, etc.; Choose the appropriate route for driving. [0003] In the prior art, the navigation system uses path planning, that is, the navigation system searches for an optimal or suboptimal path from the initial state to the target state according to a certain rule, so as to describe the driving route of the vehicle to the destination. When the vehicle approaches the intersection, the highlighted lines describe the driving route from the current road segment through the intersection to the next road segment. When the vehicle reaches the intersect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/26G01C21/30G01C21/34
Inventor 何云燕
Owner AUTONAVI