Ballistocardiogram of avian eggs determined by an electromagnetic induction coil |
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Authors: | H Ono R Akiyama Y Sakamoto J T Pearson H Tazawa |
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Institution: | (1) Department of Electrical & Electronic Engineering, Muroran Institute of Technology, 050 Muroran, Japan |
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Abstract: | As an avian embryo grows within a eggshell, the whole egg is moved by embryonic activity and also by the embryonic heartbeat.
A technical interest in detecting minute biological movements has prompted the development of techniques and systems to measure
the cardiogenic ballistic movement of the egg or ballistocardiogram. (BCG). In this context, there is interest in using an
electromagnetic induction coil (solenoid) as another simple sensor to measure the BCG and examining its possibility for BCG
measurement. A small permanent magnet is attached tightly to the surface of an incubated egg, and then the egg with the magnet
is placed in a solenoid. Preliminary model analysis is made to design a setup of the egg, magnet and solenoid coupling system.
Then, simultaneous measurement with a laser displacement measuring system, developed previously, is made for chicken eggs,
indicating that the solenoid detects the minute cardiogenic ballistic movements and that the BCG determined is a measure of
the velocity of egg movements. |
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Keywords: | Ballistocardiogram Cardiogenic movement Chicken egg Embryo Induction coil Laser displacement meter Model analysis |
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