상세정보
학술지
Indoor Location Awareness Based on Received Signal Strength Ratio and Time Division Multiplexing Using Lightemitting Diode Light
- 저자
- 정수용, 이성로, 박창수
- 발행일
- 201401
- 출처
- Optical Engineering, v.53 no.1, pp.1-5
- ISSN
- 0091-3286
- 출판사
- SPIE
- 협약과제
- 14ZC2300, 연속시역 3D디스플레이를 위한 레이저Backlightunit 모듈핵심기술개발, 이세형
- 초록
- We propose and demonstrate an indoor location awareness method for an autonomous robot vehicle using light-emitting diodes (LEDs). The location is estimated by measuring received signal strength ratio (RSSR), which is the relative ratio of optical powers detected between each LED and optical receiver. In this method, multiple LED lamps on the indoor ceiling are used, which can radiate light only during the individual time slot assigned to each of them. Using the RSSRs, circle or straight line equations are obtained and the crossing point among those equations determines the location of the object. In the experiment, four LED lamps are identified by time-division multiplexing with room dimensions of 1.0 × 1.0 × 1.3 m3, and the results show that the mean of the location error is 3.24 cm in the entire floor area © 2014 The Authors.
- KSP 제안 키워드
- Autonomous robot, Crossing point, Indoor location awareness, LED lamp, Light-emitting diodes (leds), Location Error, Optical receiver, Radio signal strength(RSS), Relative ratio, Straight line, Strength ratio