Summary
International Symposium on Nonlinear Theory and its Applications
2008
Session Number:B1L-A
Session:
Number:B1L-A1
Known and unknown phenomena of nonlinear behaviors in the power harvesting mat and the transverse wave speaker
Yoshiyasu Takefuji,
pp.-
Publication Date:2008/9/7
Online ISSN:2188-5079
Summary:
Known and unknown behaviors of three nonlinear systems are described in this paper. The power harvesting project is mentioned where the power generation mat using piezoelectric elements was experimented and demonstrated in Tokyo station of Japan Railways east (JR-east) company in 2006 and 2008 respectively. The commuters and passengers generate electric power by passing the power generation mats through SUICA (RFID) gates which can provide enough electric power for operating the RFID gate system. The system is composed of the power generation circuit and the super capacitor circuit to store the generated electric power. Thermoelectric power generation project is also proposed in this paper where peltier elements are used for generating the continuous power harvesting. Unknown phenomena of the transverse acoustic waves from a new speaker are depicted in this paper. The new speaker under development is useful in railways stations and trains where we can hear the transverse acoustic sound clearly in noisy places. The transverse wave speaker does not generate reverberant sound and the sound attenuation in distance is much smaller than 6dB.