Positioning and internal and external identification method for vehicle Bluetooth intelligent key

A technology of a smart key and an identification method, which is applied in the field of positioning and internal and external identification of a Bluetooth smart key for vehicles, can solve the problems of GPS failure, the cost of multiple sets of GPS nodes are expensive, and the Bluetooth beacon is expensive, so as to improve the stability and reliability. Effect

Active Publication Date: 2019-07-26
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this invention does not fully consider that in some special environments, such as underground garages and high-rise buildings, GPS may fail, and the cost of multiple GPS nodes is more expensive than Bluetooth beacons

Method used

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  • Positioning and internal and external identification method for vehicle Bluetooth intelligent key
  • Positioning and internal and external identification method for vehicle Bluetooth intelligent key
  • Positioning and internal and external identification method for vehicle Bluetooth intelligent key

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Embodiment Construction

[0066] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0067] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of parts is appropriately exaggerated in some places in the drawings.

[0068] Such as figure 1 As shown, this embodiment provides a method for positioning and internal and external identification of th...

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Abstract

The invention discloses a positioning and internal and external identification method for a vehicle Bluetooth intelligent key, relates to the technical field of wireless communication and positioning,and comprises the following steps: step 1, collecting and analyzing Bluetooth RSS (Received Signal Strength), and identifying the position of the intelligent key; 2, acquiring and analyzing the geomagnetic field intensity, and performing auxiliary identification on the position of the intelligent key; and step 3, analyzing the identification results of the step 1 and the step 2, and comprehensively judging the position of the intelligent key. According to the invention, the geomagnetic field intensity difference caused by the structure and layout around and inside the vehicle is fully utilized; compared with a single RSS detection and positioning method, the method has the advantages that the influence of external interference on the Bluetooth RSS detection is effectively relieved, and the accuracy of the internal and external identification results of the vehicle and the robustness of the system are improved by adopting a mode of assisting the Bluetooth RSS detection through geomagnetic anomaly detection.

Description

technical field [0001] The invention relates to the technical field of wireless communication and positioning, in particular to a method for positioning and internal and external identification of a Bluetooth smart key for a vehicle. Background technique [0002] The keyless entry and start system (Passive Entry&Passive Start, PEPS) based on the intelligent terminal is an important development direction of the next generation of automobiles. Bluetooth devices are widely used in PEPS systems due to their low cost, low power consumption, short delay and high reliability. The Bluetooth PEPS system uses the smart terminal as the virtual key of the vehicle, eliminating the need for a special vehicle key, and realizing keyless entry and start. [0003] Bluetooth RSS (Received Signal Strength, RSS) is a physical quantity with low information acquisition cost and related to the receiving distance. It can be used for intelligent terminal-based vehicle interior and exterior position ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/021H04W4/40H04W4/80H04W64/00G01S5/02G01C21/08
CPCG01C21/08G01S5/0257H04W4/021H04W4/023H04W64/006H04W4/40H04W4/80
Inventor 赵忠华晏懿琳曹一文李冬阳吉小军杨剑庞晓峰李达
Owner SHANGHAI JIAO TONG UNIV
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