Ultra-Low Power Event-Driven Wireless Sensor Node Using Piezoelectric Accelerometer for Health Monitoring
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概要
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We describe a low power consumption wireless sensor node designed for monitoring the conditions of animals, especially of chickens. The node detects variations in 24-h behavior patterns by acquiring the number of the movement of an animal whose acceleration exceeds a threshold measured in per unit time. Wireless sensor nodes when operated intermittently are likely to miss necessary data during their sleep mode state and waste the power in the case of acquiring useless data. We design the node worked only when required acceleration is detected using a piezoelectric accelerometer and a comparator for wake-up source of micro controller unit.
- 2009-07-25
著者
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ITOH Toshihiro
National Institute of Advanced Industrial Science and Technology (AIST)
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Kobayashi Takeshi
National Institute For Materials Science
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Masuda Takashi
The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
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Okada Hironao
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8564, Japan
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Itoh Toshihiro
National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8564, Japan
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Okada Hironao
National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8564, Japan
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Kobayashi Takeshi
National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8564, Japan
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