Ultrawideband (UWB)-based precise short-range localization for wireless power transfer to electric vehicles in parking environments

As the necessity of wireless charging to support the popularization of electric vehicles (EVs) emerges, the development of a wireless power transfer (WPT) system for EV wireless charging is rapidly progressing. The WPT system requires alignment between the transmitter coils installed on the parking...

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Bibliographic Details
Published in:PeerJ. Computer science 2021-05, Vol.7, p.e567-e567, Article e567
Main Author: Lee, Seung-Mok
Format: Article
Language:English
Subjects:
Accuracy
Algorithms
Algorithms and Analysis of Algorithms
Automobiles, Electric
Autonomous Systems
Cameras
Coils
Communications equipment
Distance measurement
Electric power
Electric vehicle charging
Electric vehicles
Global positioning systems
GPS
Localization
Localization method
Mathematical analysis
Modules
Numerical analysis
Odometers
Parking facilities
Robotics
Sensors
Transmitters
Ultrawideband
Ultrawideband (UWB)
Vehicle pose estimation
Wireless power transfer systems
Wireless power transmission
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Summary:As the necessity of wireless charging to support the popularization of electric vehicles (EVs) emerges, the development of a wireless power transfer (WPT) system for EV wireless charging is rapidly progressing. The WPT system requires alignment between the transmitter coils installed on the parking lot floor and the receiver coils in the vehicle. To automatically align the two sets of coils, the WPT system needs a localization technology that can precisely estimate the vehicle's pose in real time. This paper proposes a novel short-range precise localization method based on ultrawideband (UWB) modules for application to WPT systems. The UWB module is widely used as a localization sensor because it has a high accuracy while using low power. In this paper, the minimum number of UWB modules consisting of two UWB anchors and two UWB tags that can determine the vehicle's pose is derived through mathematical analysis. The proposed localization algorithm determines the vehicle's initial pose by globally optimizing the collected UWB distance measurements and estimates the vehicle's pose by fusing the vehicle's wheel odometry data and the UWB distance measurements. To verify the performance of the proposed UWB-based localization method, we perform various simulations and real vehicle-based experiments.
ISSN:2376-5992
2376-5992
DOI:10.7717/peerj-cs.567