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Adaptive Power Control of Obstacle Avoidance System using Motion Context of Visually Impaired Person

이영주|신병석|이진희
한국차세대컴퓨팅학회 (KINGComputing)|2012.06|한국차세대컴퓨팅학회 논문지 (The Journal of Korean Institute of Next Generation Computing)|제8권 제3호|pp. 6-14|DOI http://dx.doi.org/

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키워드

전력 소비초음파 센서obstacle avoidance systemultrasonic sensorpower consumptionwearable computer장애물 회피 시스템착용형 컴퓨터
주제분류컴퓨터학

초록

We propose adaptive power control of an obstacle avoidance system for visually impaired person. It utilizes multiple ultrasonic sensors to detect obstacles lying in the path. We evaluate complex structure in front of the user with predefined patterns and determine avoidance direction by analysing those patterns. It evaluates motion context using built-in accelerometer sensor and estimates acceleration information utilizing hidden Markov model. Our system safely guides visually impaired person as well as adaptively controls power consumption adjusting the number of active ultrasonic sensors.

Abstract

We propose adaptive power control of an obstacle avoidance system for visually impaired person. It utilizes multiple ultrasonic sensors to detect obstacles lying in the path. We evaluate complex structure in front of the user with predefined patterns and determine avoidance direction by analysing those patterns. It evaluates motion context using built-in accelerometer sensor and estimates acceleration information utilizing hidden Markov model. Our system safely guides visually impaired person as well as adaptively controls power consumption adjusting the number of active ultrasonic sensors.

참고문헌 (27)

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