 |
|
 |
 |
We use several
methods to evaluate the comfort of our products such as the Mu-len
Drive Seat, the magneto-spring suspension unit, etc. "Real Cast"
is one of these tools; it was developed and provided byComputer
Convenience Inc., based on our theories regarding comfort.
|
|
|
|
The human hand is sometimes
called the "secondary brain"; it reflects the state of
the entire body via the large concentration of capillaries and autonomic
nerves found within. The Real-CAST measures human pulse waves via
a clothespin-like optical finger plethysmogram recording device
attached to the subject's fingertip, the part of the hand (the "secondary
brain") that most clearly reflects the body's condition. |
|
|
|
|
|
|
|
|
|
|
|
At a glance,
the recorded pulse waves appear to be cyclical; however, tiny fluctuations
occur that are linked to factors such as external stimuli or the
body's physical condition. These small fluctuations are detected
via chaos analysis, and the subject's condition can be assessed
based on the degree of fluctuation. |
|
 |
 |
|
 |
|
 |
| 1077 |
3006 |
|
|
|
|
|
| 0-30
seconds |
50-80seconds |
|
100-130
seconds |
|
150-180
seconds |
|
|
The degree of fluctuation
is used to assess changes in the subject's condition, based on where
it falls within the four event categories defined below along two
conditional axes: "emotional" and physical". |
|
 |
|
|
|
|
|
With the optional Fatigue Detection
system, it is possible to assess the degree of fatigue in a quantitative
manner. Through recent studies, we have also found that the detection
of fatigue in this manner can also be applied to prediction of sleep
states. |
|
 |
|
|
|
