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Positioning method, device and system

A positioning method and location information technology, which is applied in the direction of location information-based services, transportation and packaging, and services based on specific environments. It can solve problems such as reference object contamination, aging, and vehicles that cannot be measured or collected, and achieve improved positioning. The effect of precision

Active Publication Date: 2021-04-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the reference object may be stained, aged, incomplete, or blocked by obstacles such as nearby buildings and signs, it is easy for the vehicle to fail to measure or collect accurate attribute feature values ​​of the reference object, resulting in The feature matching positioning method is invalid or the positioning accuracy is reduced
As a result, the vehicle positioning function of the car cannot provide accurate location information, making it difficult to ensure safe and smooth driverless driving

Method used

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  • Positioning method, device and system
  • Positioning method, device and system
  • Positioning method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] See figure 2 , figure 2 It is a schematic flowchart of a positioning method provided in the embodiment of this application. This targeting method is suitable for figure 1 The positioning system shown. Depend on figure 2 As can be seen, the method includes the following steps:

[0065] S210. The first terminal device generates a first message.

[0066] In some possible implementation manners, when the first terminal device determines that the positioning function needs to be performed, it may generate a first message. The first message is mainly used to request the server to provide applicable reference objects. Here, the so-called reference objects are objects around the first terminal device that can provide a reference position for the first terminal device to assist the first terminal device in performing the positioning function, such as landmark buildings, traffic lights, billboards, etc. around the first terminal device.

[0067] In a specific implementa...

Embodiment 2

[0122] See Figure 5 , Figure 5 It is another schematic flowchart of a positioning method provided in the embodiment of the present application. Depend on Figure 5 It can be seen that the method includes:

[0123] S501. The vehicle-mounted system generates a first message according to the first location information and the map version number.

[0124] In a specific implementation, when the vehicle-mounted system determines to perform a positioning function, it may first obtain a first position information through a built-in global positioning system. The first location information may specifically include the latitude and longitude where the vehicle carrying the vehicle-mounted system (for convenience of distinction, the description will be replaced by the first vehicle hereinafter) is located. Optionally, the in-vehicle system may also extract the location information obtained by executing the location function last time from its location information history record and ...

Embodiment 3

[0140] See Image 6 , Image 6 It is another schematic flowchart of a positioning method provided in the embodiment of the present application. This targeting method also works for figure 1 The positioning system shown. Depend on Image 6 It can be seen that the positioning method may include:

[0141] S610, the server generates a feature query message.

[0142]In some possible implementation manners, the server may first determine one or more reference objects from the reference objects marked in the first map it uses according to a preset reference object query rule. Here, the above-mentioned reference object query rule is used to filter reference objects whose value of an attribute feature is likely to change (that is, the stability of the attribute feature is low). For the convenience of understanding and distinction, the description will be replaced by N4 fourth reference objects hereinafter. Then, the server may generate a feature query message according to the id...

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Abstract

The invention discloses a positioning method, device and system, which are suitable for scenes such as Internet of Vehicles, networked vehicles, automatic driving and the like, and can solve the problem of low positioning precision of the first terminal equipment due to inapplicability of a reference object. The method comprises the steps that a server receives a first message from the first terminal equipment; wherein the first message comprises first position information determined by the first terminal device. The server determines a first reference object according to the first position information; and the server sends the second message to the first terminal device, wherein the second message comprises identification information of the first reference object, and the identification information of the first reference object is used for updating the first position information by the first terminal equipment. By adopting the method provided by the invention, the positioning precision of the first terminal equipment can be improved.

Description

technical field [0001] The present application relates to the field of smart cars, in particular to a positioning method, device and system. Background technique [0002] With the continuous development of Internet technology and manufacturing technology, emerging applications such as driverless cars continue to emerge. The so-called driverless car is a smart car that senses the road environment through the on-board sensor system, automatically plans the driving route and controls the vehicle to reach the predetermined target. For driverless cars, vehicle positioning is one of the main technologies that it can rely on. The accuracy of vehicle positioning will directly affect whether unmanned vehicles can be applied to actual traffic scenarios. Therefore, how to ensure the accuracy of vehicle positioning has become a major research hotspot at present. [0003] In the prior art, positioning based on satellite signals (such as positioning based on global positioning system, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/44H04W64/00
CPCH04W4/02H04W4/44H04W64/006G01C21/28G01S19/485G01S19/50G01S5/0036G01S19/14G01S5/16G01S5/0236H04W4/40
Inventor 陈军刘建琴林永兵
Owner HUAWEI TECH CO LTD
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