TY - GEN
T1 - Low-frequency amplifiers for PVDF film sensors
AU - Williams, David G.
AU - Donohue, Kevin D.
AU - O'Hara, Bruce F.
PY - 2008
Y1 - 2008
N2 - This paper proposes instrumentation amplifiers for use with large area Polyvinylidine Diflouride (PVDF) sensors designed to detect rodent motion. The sensor behaves as a pressure-to-voltage converter in series with a parasitic capacitance. Motion signals critical for classifying rodent behavior range from 0.5 Hz to 20 Hz. Amplification on the order of 20dB is required for the pass-band before digitization. Amplifier A is presently used in an experimental system. This amplifier has slow response time with noticeable drift. Amplifier B is designed to overcome these obstacles. It is more complex but reduces the drift and noise floor, while decreasing the response time. Performance is evaluated with metrics based on low-frequency drift and noise-floor power computed over a 19-hour period and with recovery time from saturation. The comparison shows amplifier B with a faster response and lower drift than amplifier A.
AB - This paper proposes instrumentation amplifiers for use with large area Polyvinylidine Diflouride (PVDF) sensors designed to detect rodent motion. The sensor behaves as a pressure-to-voltage converter in series with a parasitic capacitance. Motion signals critical for classifying rodent behavior range from 0.5 Hz to 20 Hz. Amplification on the order of 20dB is required for the pass-band before digitization. Amplifier A is presently used in an experimental system. This amplifier has slow response time with noticeable drift. Amplifier B is designed to overcome these obstacles. It is more complex but reduces the drift and noise floor, while decreasing the response time. Performance is evaluated with metrics based on low-frequency drift and noise-floor power computed over a 19-hour period and with recovery time from saturation. The comparison shows amplifier B with a faster response and lower drift than amplifier A.
UR - https://www.scopus.com/pages/publications/50049124543
UR - https://www.scopus.com/pages/publications/50049124543#tab=citedBy
U2 - 10.1109/SECON.2008.4494259
DO - 10.1109/SECON.2008.4494259
M3 - Conference contribution
AN - SCOPUS:50049124543
SN - 9781424418848
T3 - Conference Proceedings - IEEE SOUTHEASTCON
SP - 75
EP - 79
BT - IEEE SoutheastCon 2008
T2 - IEEE SoutheastCon 2008
Y2 - 3 April 2008 through 6 April 2008
ER -