Sanyo HECSR1000K Service Manual - Page 6

Operation of Stiffness Detecting Sensor HEC-DR21 (TAIWAN) 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 Perspiration Pulse Skin temperature If your body receives stimulus and feels "stiffness," Use rollers for legs. Use massaging balls for neck/shoulder, back, and waste. Perspiration increases. Pulses Skin temperature accelerate. lowers. 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. Iron core linked to arm. Arm angle that varies in accord with body curves is detected and human body build and shoulder position are judged. coil section Even if body position is deviated during massage, the shoulder position is automatically corrected. - 6 -