Development of a wireless sensor for the measurement of chicken blood flow using the laser Doppler blood flow meter technique.
Here, we report the development of an integrated laser Doppler blood flow micrometer for chickens. This sensor weighs only 18 g and is one of the smallest-sized blood flow meters, with no wired line, these are features necessary for attaching the sensor to the chicken. The structure of the sensor chip consists of two silicon cavities with a photo diode and a laser diode, which was achieved using the microelectromechanical systems technique, resulting in its small size and significantly low power consumption. In addition, we introduced an intermittent measuring arrangement in the measuring system to reduce power consumption and to enable the sensor to work longer. We were successfully able to measure chicken blood flow for five consecutive days, and discovered that chicken blood flow shows daily fluctuations.
Graduate School of Systems Life Science, Kyushu University, Fukuoka 812-8581, Japan. nishihara_kei@nanomicro.mech.kyushu-u.ac.jp
Kei
K
Nishihara
Wataru
W
Iwasaki
Masaki
M
Nakamura
Eiji
E
Higurashi
Tomoki
T
Soh
Toshihiro
T
Itoh
Hironao
H
Okada
Ryutaro
R
Maeda
Renshi
R
Sawada
D000818:Animals; D001783:Blood Flow Velocity / Q000502:physiology*; D002645:Chickens / Q000502:physiology*; D004867:Equipment Design; D017078:Laser-Doppler Flowmetry / Q000295:instrumentation / Q000379:methods / Q000662:veterinary*; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation; D018670:Monitoring, Ambulatory / Q000662:veterinary; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012867:Skin / Q000098:blood supply; D013909:Thorax / Q000098:blood supply; D059015:Wireless Technology / Q000295:instrumentation*