Abstract
In previous work, we presented the development of a piezoelectric switch for applications in ultra-low power wireless sensor nodes for monitoring the health condition of chickens. Using Pb(Zr0.52, Ti0.48)O3 (PZT) thin films, we have developed 'S'-shaped PZT cantilevers with proof masses. Since the resonant frequency of the PZT devices is around 24 Hz, we utilized superharmonic resonance to detect chicken movements as low as 5 to 15 Hz. However, the PZT devices broke when applied to other sensor nodes. 'S'-shaped PZT devices are adequate for low vibrations, but are beset by structural problems that cause fragmentation on impact. In order to address these problems, in this paper, we examine methods for utilizing PolyVinylideneDiFluoride (PVDF) films as piezoelectric switches. These are stronger and generate high piezoelectric output voltages under large stress. We suggest a structure in which the large load is applied to the PVDF films. One end of PVDF film is fixed on the case of the sensor node, and the he PVDF films are bonded on a part of the belts which are wound around a chicken's wing. Since the PVDF films are subjected to direct force generated by the chicken's motion, high output voltages are expected. Using the high output voltages, we are able to measure the chicken's activity levels. As a result, we were able to confirm circadian change of activity, and successfully fabricated tough wireless sensor nodes for chickens by utilizing the features of the PVDF films.
| Original language | English |
|---|---|
| Title of host publication | DTIP 2014 - Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9782355000287 |
| DOIs | |
| Publication status | Published - Mar 9 2014 |
| Externally published | Yes |
| Event | 2014 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, DTIP 2014 - Cannes, France Duration: Apr 2 2014 → Apr 4 2014 |
Publication series
| Name | DTIP 2014 - Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS |
|---|
Other
| Other | 2014 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, DTIP 2014 |
|---|---|
| Country | France |
| City | Cannes |
| Period | 4/2/14 → 4/4/14 |
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All Science Journal Classification (ASJC) codes
- Computer Graphics and Computer-Aided Design
- Computer Science Applications
- Hardware and Architecture
Cite this
Piezoelectric PVDF film switch to activate event-driven system for chicken health monitoring. / Nogami, Hirfoumi; Okada, Hironao; Takamatsu, Seiichi; Kobayashi, Takeshi; Maeda, Ryutaro; Itoh, Toshihiro.
DTIP 2014 - Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS. Institute of Electrical and Electronics Engineers Inc., 2014. 7056689 (DTIP 2014 - Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Piezoelectric PVDF film switch to activate event-driven system for chicken health monitoring
AU - Nogami, Hirfoumi
AU - Okada, Hironao
AU - Takamatsu, Seiichi
AU - Kobayashi, Takeshi
AU - Maeda, Ryutaro
AU - Itoh, Toshihiro
PY - 2014/3/9
Y1 - 2014/3/9
N2 - In previous work, we presented the development of a piezoelectric switch for applications in ultra-low power wireless sensor nodes for monitoring the health condition of chickens. Using Pb(Zr0.52, Ti0.48)O3 (PZT) thin films, we have developed 'S'-shaped PZT cantilevers with proof masses. Since the resonant frequency of the PZT devices is around 24 Hz, we utilized superharmonic resonance to detect chicken movements as low as 5 to 15 Hz. However, the PZT devices broke when applied to other sensor nodes. 'S'-shaped PZT devices are adequate for low vibrations, but are beset by structural problems that cause fragmentation on impact. In order to address these problems, in this paper, we examine methods for utilizing PolyVinylideneDiFluoride (PVDF) films as piezoelectric switches. These are stronger and generate high piezoelectric output voltages under large stress. We suggest a structure in which the large load is applied to the PVDF films. One end of PVDF film is fixed on the case of the sensor node, and the he PVDF films are bonded on a part of the belts which are wound around a chicken's wing. Since the PVDF films are subjected to direct force generated by the chicken's motion, high output voltages are expected. Using the high output voltages, we are able to measure the chicken's activity levels. As a result, we were able to confirm circadian change of activity, and successfully fabricated tough wireless sensor nodes for chickens by utilizing the features of the PVDF films.
AB - In previous work, we presented the development of a piezoelectric switch for applications in ultra-low power wireless sensor nodes for monitoring the health condition of chickens. Using Pb(Zr0.52, Ti0.48)O3 (PZT) thin films, we have developed 'S'-shaped PZT cantilevers with proof masses. Since the resonant frequency of the PZT devices is around 24 Hz, we utilized superharmonic resonance to detect chicken movements as low as 5 to 15 Hz. However, the PZT devices broke when applied to other sensor nodes. 'S'-shaped PZT devices are adequate for low vibrations, but are beset by structural problems that cause fragmentation on impact. In order to address these problems, in this paper, we examine methods for utilizing PolyVinylideneDiFluoride (PVDF) films as piezoelectric switches. These are stronger and generate high piezoelectric output voltages under large stress. We suggest a structure in which the large load is applied to the PVDF films. One end of PVDF film is fixed on the case of the sensor node, and the he PVDF films are bonded on a part of the belts which are wound around a chicken's wing. Since the PVDF films are subjected to direct force generated by the chicken's motion, high output voltages are expected. Using the high output voltages, we are able to measure the chicken's activity levels. As a result, we were able to confirm circadian change of activity, and successfully fabricated tough wireless sensor nodes for chickens by utilizing the features of the PVDF films.
UR - http://www.scopus.com/inward/record.url?scp=84946692180&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84946692180&partnerID=8YFLogxK
U2 - 10.1109/DTIP.2014.7056689
DO - 10.1109/DTIP.2014.7056689
M3 - Conference contribution
AN - SCOPUS:84946692180
T3 - DTIP 2014 - Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS
BT - DTIP 2014 - Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS
PB - Institute of Electrical and Electronics Engineers Inc.
ER -