Positioning method, device and system

A positioning method and technology of position information, applied in the direction of service based on position information, transportation and packaging, service based on specific environment, etc., can solve the problem that the vehicle positioning function cannot provide position information, the positioning accuracy is reduced, and the feature matching positioning method is invalid, etc. question

Pending Publication Date: 2022-08-09
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

[0065] See figure 2 , figure 2 This is a schematic flowchart of a positioning method provided by an embodiment of the present application. This positioning method is suitable for figure 1 positioning system shown. Depend on figure 2 It can be seen that the method includes the following steps:

[0066] S210, the first terminal device generates a first message.

[0067] In some possible implementations, 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 it with a suitable reference. Here, the so-called reference object is an object around the first terminal device that can provide a reference position for the first terminal device to assist the first terminal device to perform a positioning function, such as landmark buildings, traffic lights, and billboards around the first terminal device.

[0068] In a specific implementation...

Embodiment 2

[0123] See Figure 5 , Figure 5 It is another schematic flowchart of a positioning method provided by an embodiment of the present application. Depend on Figure 5 It can be seen that the method includes:

[0124] S501, the in-vehicle system generates a first message according to the first location information and the map version number.

[0125] In a specific implementation, after the in-vehicle system determines to perform a positioning function, it can first obtain a first position information through the built-in global positioning system. The first location information may specifically include the latitude and longitude of the vehicle equipped with the vehicle-mounted system (for the convenience of distinction, the description will be replaced by the first vehicle hereinafter). Optionally, the in-vehicle system may also extract the position information obtained by the last execution of the positioning function from the historical record of its positioning information...

Embodiment 3

[0141] See Image 6 , Image 6 It is another schematic flowchart of a positioning method provided by an embodiment of the present application. This positioning method also works for figure 1 positioning system shown. Depend on Image 6 It can be seen that the positioning method may include:

[0142] S610, the server generates a feature query message.

[0143]In some possible implementations, the server may first determine one or more reference objects from the reference objects marked in the first map used by the server according to a preset reference object query rule. Here, the above-mentioned reference object query rule is used to filter a reference object whose value of an attribute feature is prone to change (ie, the attribute feature has low stability). 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 identificati...

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Abstract

The invention discloses a positioning method, device and system. The method is suitable for the scenes of Internet of Vehicles, networked vehicles, automatic driving and the like, and can solve the problem of low positioning precision of the first terminal equipment caused by inapplicability of the reference object. The method comprises the following steps: a server receives a first message from a first terminal device; the first message comprises the first position information determined by the first terminal equipment. 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. The second message comprises the identification information of the first reference object, and the identification information of the first reference object is used for the first terminal device to update the first position information. By adopting the method provided by the invention, the positioning precision of the first terminal equipment can be improved.

Description

[0001] This application is a divisional application, the application number of the original application is 202080004872.9, the original application date is April 7, 2020, and the entire contents of the original application are incorporated into this application by reference. technical field [0002] The present application relates to the field of smart cars, and in particular, to a positioning method, device and system. Background technique [0003] 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 sensing 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 veh...

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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