碩士 / 國立雲林科技大學 / 電機工程系 / 104 / “Location Awareness” and “Destination Navigation” are fundamental to versatile ubiquitous wearable device’s applications and services. Wearable devices performing “Location Awareness” and “Destination Navigation” more accurately, reliability, and instantaneously, anywhere and anytime, can be applied to site directions, event guidance, merchandise seeking, social searching.
However, for proper complementation to outdoor positioning technologies, like Global Positioning System (GPS), there is nothing but three main categories of indoor positioning technologies: 1) multilateration, 2) proximity matching, and 3) dead reckoning. Against “multilateration” and “proximity matching”, “dead reckoning” featuring low cost and high robustness because of no infrastructure and no EM. So “dead reckoning” is a preferable technology in indoor positioning field and in this thesis, except slight inaccuracy due to error accumulation.
In contrast to conventional methods of 1) peak-detection walk detection, 2) zero-crossing walk detection, 3) template-matching walk detection, and 4) spectral-analysis walk detection, and 1) given-constant step length, 2) frequency-function step length, 3) direct-measure step length, and 4) inverted- pendulum step length, this project proposes 3 novel methods of “gravity-angular-velocity walk detection”, “trigonometry-free-resolution gravity vector”, and “simple-harmonic-motion step length” to improve the accuracy and reliability of inertial positioning, proposes “adjacent-list-coordinate path planning” to improve the immediateness of path planning, and implements “2D-ecompass-direction navigation indication” onto the wearable device’s screen to improve user intuitiveness of path directions.
| Identifer | oai:union.ndltd.org:TW/104YUNT0441025 |
| Date | January 2016 |
| Creators | LAI,ZU-HAO, 賴祖浩 |
| Contributors | HO,CHIAN-C., 何前程 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 74 |
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