| Author: | She, Yuanhang |
| Title: | Object tracking in wireless power transfer system |
| Advisors: | Lin, Wei (EEE) |
| Degree: | M.Sc. |
| Year: | 2024 |
| Department: | Department of Electrical and Electronic Engineering |
| Pages: | vii, 29 pages : color illustrations |
| Language: | English |
| Abstract: | In the wireless power transfer system, a machine-to-machine positioning system is needed to track the target, which needs to have high-precision direction finding and ranging capabilities in a small distance, and it must be a single-base station system. In today's indoor IOT ecosystem, positioning users is still a huge challenge. This is different from the positioning we usually encountered, indoor positioning can not use positioning technology like GPS, one is because the GPS signal is not good indoors, and the other is because the indoor positioning works in small range and requires higher accuracy. We need some special wireless technology. Other existing indoor positioning technology like Bluetooth, WiFi positioning, etc., if they want to conduct 3D positioning of the target, at least four base stations are needed. This will absolutely increase the complexity of the system. Even so, some recent studies have shown that these methods are unreliable in non-line-of-sight (NLOS) conditions. In this dissertation, PDOA and DS-TWR are used to realize machine-to-machine positioning, and a two-degree-of-freedom cloud platform is used to track the target. Qorvo's recently released DW3120 and DW3220 support direction finding using PDOA and ranging using TDOA. The system will use two directions PDOA to test the azimuth Angle and elevation Angle, and uses DS-TWR method to test the distance. The experimental results show that the proposed system has low power consumption, excellent performance in direction finding and ranging, and can realize real-time tracking of the target. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 8293.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 1.13 MB | Adobe PDF | View/Open |
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