Sanyo HECSR1000K - Stiffness Sensor - Multi Roller Massage Chair Service Manual page 6

Operation of Stiffness
Detecting Sensor
To the remote controller sensor section, three kinds of sensors (skin electric resistance,
photo sensor, thermistor) are assembled, and measure three kinds of physiological
amounts (perspiration, pulse, skin temperature).
When stiff portions are subject to massage stimulus of detection massage, changes are
observed in the perspiration rate, number of pulses, and skin temperature.
These three kinds of displacements are measured.
sensor section
Use rollers for legs.
Stiffness feeling is judged by combinations of perspiration rate, number of pulses, and skin
temperature and are classified into four stages (relax, normal, stiffness feeling, pains).
1. In the case of relax, perspiration rate tends to lower.
2. In the case of normal, change of each physiological amount is small.
3. In the case of stiffness feeling, perspiration rate and number of pulses tend to increase.
4. In the case of pains, perspiration rate greatly increases and number of pulses tends to increase.
Stiffness feeling is indicated by three colors: green (relax), orange (normal), red
(stiffness feeling/pains).
Operation of Body
Contour Sensor
The body contour sensor judges the body contour (shoulder position) by
changes of angles of massage arms.
Sensors consist of coils and iron cores, detect displacement of reactance,
and convert into angular changes.
Even if body position is deviated during massage, the shoulder position is
automatically corrected.
Use massaging
balls for neck/shoulder,
back, and waste.
Arm angle that varies
in accord with body
curves is detected
and human body build
and shoulder position
are judged.
Perspiration
If your body receives stimulus
and feels "stiffness,"
Perspiration
increases.
Iron core linked to arm.
coil section
- 6 -
HEC-DR21
(TAIWAN)
Pulse Skin temperature
Pulses Skin temperature
accelerate. lowers.