| 摘要 |
PURPOSE: A device for measuring electric signals produced from points on a human body is provided, thereby electric resistance of the human body is measured regardless of its differences of individuals since the device contains a variable voltage supply circuit. Therefore, the device is used for diagnosing and treating diseases by analysing measured signals. CONSTITUTION: The system for measuring electric signals from points on a human body consists of monitor(1), computer(2) containing I/O interface card, and a device containing operational amplifier(OP amp), A/D convertor(ADC), scan circuit, electric power, and voltage controller. The device provides several points on the human body with variable voltage, collects electric signals by time division scanning, and converts data into digital numbers or digital images. The device consists of conductive carbon gel electrodes of 5 mm in diameter which collect data and are surrounded with rubber packing for vacuum pressing.
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