Title :
Multi-lateration for multiplexed ultrasonic sensors
Author :
Hori, Toshio ; Nishida, Yoshifumi ; Kanade, Takeo ; Akiyama, Kenji
Author_Institution :
Digital Human Res. Center, AIST, Tokyo, Japan
Abstract :
This paper presents a new multi-lateration algorithm developed by the authors for multiplexed ultrasonic emitters. Our ultrasonic sensor system had a problem that a sampling rate for each emitter had to be decreased to avoid crosstalk as the number of emitter increased. We analyzed the phenomena geometrically and mathematically, and developed a new multi-lateration algorithm that enables our ultrasonic sensor system locate multiple emitters at a time by activating them simultaneously. Simulation results supported the effectiveness of our proposed algorithm and the algorithm implemented in our test system worked perfectly for the experiments conducted in a real environment.
Keywords :
multiplexing; sensors; ultrasonic devices; ultrasonic measurement; crosstalk; multi-lateration algorithm; multiple emitters; multiplexed ultrasonic sensors; sampling rate; Algorithm design and analysis; Cameras; Crosstalk; Frequency; Humans; Monitoring; Robustness; Sampling methods; Sensor systems; System testing;
Conference_Titel :
Sensors, 2003. Proceedings of IEEE
Print_ISBN :
0-7803-8133-5
DOI :
10.1109/ICSENS.2003.1279139