電灯線通信とマット・センサーを用いた離床検知通報装置の開発 [in Japanese] Development of Getting Up Detection and Report Device using Power Line Communication and Mat-Sensor [in Japanese]
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In this paper, we propose the getting up detection and report device which can be installed in middle-small facilities and ordinary houses. This device combines a mat sensor which detects rising and a power line communication (PLC) device as a reporting system. This device does not need any additional construction for installation as long as facilities equip electric power supply 100V for ordinary businesses. At first, the mat sensor in the system detects rising of an elderly person or lying down to bed. The PLC system sends ON/OFF signal and reports to nurses and staff members in their rooms. Since the main objective of the PLC system is to keep exact detection and transmission of the mat-sensor ON/OFF signal, high-speed network is not necessary. It is required that the system should be robust against noises of household electrical appliances. We used the selected-career method as a transmission method in which we located 2 lines of tone frequency (132kHz or 115kHz) for the power line transmission in the device. The effectiveness of the proposed device has been confirmed by the field experiments in welfare facilities for elderly people.
- IEEJ Transactions on Sensors and Micromachines
IEEJ Transactions on Sensors and Micromachines 126(11), 1507-1513, 2006-11-01
The Institute of Electrical Engineers of Japan