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Biology Experiments:
o
Heart Rate and Coughing (B-18)
o
Heart Rate and Physical Activity (B-19)
Technical background:
The philosophy behind NeuLog's plug and play technology is based on each sensor's
ability to store its own data due to an internal flash memory chip and micro-controller
in each plastic NeuLog body. This technology allows the sensor to collect and then
store the digital data in the correct scientific units (
The sensor is pre-calibrated at the factory. The built-in software in the logger can be
upgraded for free at any time using the provided firmware update.
The pulse sensor's probe consists of a fingertip/earlobe clip which houses an infrared
light source and an infrared light detector on opposite sides.
The blood in the finger flows forward (oxygenated) and backward (deoxygenated with
CO
). The IR light absorbed by the deoxygenated blood and the detected light
2
intensity changes are according to the heart pulses.
NEULOG HEART RATE AND PULSE LOGGER SENSOR GUIDE
o
o
C,
F, Lux, %, ppm, for example).
Arbitrary analog units (wave function):
Beats per minute:
The light average intensity changes according to the skin color and/or thickness, the
probe's pressure, etc. The sensor's electronics offsets the average intensity, amplifies
and passes the pulses only to the internal controller, which calculates the pulses' rate.
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