S-Space Graduate School of Convergence Science and Technology (융합과학기술대학원) Dept. of Transdisciplinary Studies(융합과학부) Theses (Master's Degree_융합과학부)
Mobile Exhibition Guide System Using Multi-Channel Energy Detection of Near-Ultrasonic Signals
비가청 고주파음역을 활용한 전시가이드 시스템의 구현
- 융합과학기술대학원 융합과학부(디지털정보융합전공)
- Issue Date
- 서울대학교 대학원
- 학위논문 (석사)-- 서울대학교 융합과학기술대학원 : 융합과학부(디지털정보융합전공), 2014. 2. 이교구.
- This thesis presents a new method for exhibition guide systems, an application for mobile devices that utilizes near-ultrasonic sound waves as communication signals. This system substitutes existing museum or gallery guide systems that use technologies such as infrared sensors, QR codes, RFID, or any other manual input. In the proposed system, a near-field tweeter speaker stands near each piece of artwork and transmits mixed tones in the inaudible frequency range. The receiver application filters interfering noise and pinpoints the signal coming from the nearest artwork, identifies the artwork, and requests the corresponding information from the data server. This process is done automatically and seamlessly, requiring no input from the user. Experiments show that the method is highly accurate and robust to noise, indicating its potential applications to other areas such as indoor positioning systems. In addition, a case study shows that the proposed system is favorable in many aspects compared to existing guide systems.