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Intelligent network connection vehicle positioning method and device

A vehicle positioning and intelligent network technology, which is applied in the field of intelligent networked vehicle positioning methods and devices, can solve the problems of low vehicle positioning accuracy and wireless signal attenuation, and achieve the effect of improving vehicle positioning accuracy and avoiding theoretical error problems

Pending Publication Date: 2020-12-04
GCI SCI & TECH +1
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, due to interference from the environment outside the vehicle, the wireless signal is attenuated, and the signal strength received by the vehicle may be greatly different from the theoretical value, resulting in low vehicle positioning accuracy.

Method used

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  • Intelligent network connection vehicle positioning method and device
  • Intelligent network connection vehicle positioning method and device
  • Intelligent network connection vehicle positioning method and device

Examples

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no. 1 example

[0041] like Figure 1-2 As shown, a method for positioning an intelligent networked vehicle, including steps S1 to S4:

[0042] S1. Collect received signal strength at sampling points around each roadside unit, and use the received signal strength and the sampling distance from the sampling point to the roadside unit as discrete signal data to construct a discrete signal database.

[0043] S2. In response to the positioning request initiated by the vehicle to be positioned, when the vehicle to be positioned receives signals output by at least three roadside units, select at least three roadside units as target roadside units.

[0044] S3. Compare the current received signal strength of the vehicle to be positioned with the received signal strength from each target roadside unit in the discrete signal database, so as to obtain a corresponding sampling distance according to each comparison result.

[0045] S4. Based on the improved weight factor center algorithm, calculate the ...

no. 2 example

[0085] like Figure 6 As shown, the second embodiment provides an intelligent networked vehicle positioning device, including: a discrete signal database construction module 21, which is used to collect the received signal strength at the sampling points around each roadside unit, and combine the received signal strength and the sampling point The sampling distance to the roadside unit is used as discrete signal data to construct a discrete signal database; the target roadside unit selection module 22 is used to respond to the positioning request initiated by the vehicle to be positioned, when the vehicle to be positioned receives at least three roadside unit output signal, select at least three roadside units therefrom as the target roadside unit; the sampling distance acquisition module 23 is used to combine the current received signal strength of the vehicle to be positioned with the received signal strength from each target roadside unit in the discrete signal database Per...

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Abstract

The invention discloses an intelligent network connection vehicle positioning method and device. The method comprises the following steps: acquiring received signal strength at sampling points aroundeach road side unit, and constructing a discrete signal database by taking the received signal strength and sampling distances from the sampling points to the road side units as discrete signal data;responding to a positioning request initiated by a to-be-positioned vehicle, and when the to-be-positioned vehicle receives signals output by the at least three road side units, selecting the at leastthree road side units as target road side units; comparing the current received signal strength of the to-be-positioned vehicle with the received signal strength from each target road side unit in the discrete signal database so as to obtain a corresponding sampling distance according to each comparison result; and based on an improved weight factor center algorithm, calculating the target position of the to-be-positioned vehicle according to the sampling distances. According to the method and the device, a theoretical error problem caused by serious attenuation of signals due to interferenceof the environment outside the vehicle can be effectively avoided, and vehicle positioning precision is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless positioning, in particular to an intelligent networked vehicle positioning method and device. Background technique [0002] In recent years, with the rapid development of urban traffic, urban roads have become intricate, and the requirements for vehicle positioning accuracy are getting higher and higher. Existing vehicle positioning methods mainly rely on reference positions such as lane lines and guardrails to realize vehicle positioning, that is, first collect the environment image including lane lines and guardrails through the camera installed on the vehicle, establish a road model according to the environment image, and then pass the vehicle on the The installed radar obtains the distance between the vehicle and the guardrail in the environment, determines the simulated position of the vehicle in the road model according to the distance and the size information of the vehicle, and fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/40H04W64/00G06F16/245G06F16/29
CPCH04W4/40H04W64/00G06F16/245G06F16/29
Inventor 胡坚耀林凡张秋镇陈健民
Owner GCI SCI & TECH
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