PURPOSE: To collect data with signal level sufficient for analysis and without generating a saturated state by converting the detection signal of a sensor to plural signals with different amplification factors, applying A/D conversion to them by an analog multiplexer and an A/D converter, and storing the data sequentially in memory.
CONSTITUTION: The change of the resistance value of the sensor 2 mounted on a golf glove 1 is converted to an electrical signal by a pre-amplifier 3, and it is inputted to the input channel A0 of the analog multiplexer 8, and also, it is inputted to a measuring amplifier 4, and is amplified by the amplification factor set in advance, and it is inputted to the input channel A1 of the analog multiplexer 8. The input signal of the analog multiplexer 8 is A/D-converted 9, and is stored in the temporary storage area of the memory 11. An MPU 10 switches a channel to the data input channel with low amplification factor sequentially at every appearance of a saturated value from leading data in the temporary storage area, and the data in the temporary storage area from which no saturated value is found out up to the final data is transferred and preserved in a main storage area with amplification factor information.
TOYODA MITSURU
OTAKE MASATOSHI
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