| 摘要 |
<p>PURPOSE: To measure the dynamic elements for deciding the result of hitting, and display the measured data to a golf player by comprising a weak radio wave signal generator for amplifying, modulating and oscillating the acceleration values detected by three acceleration detectors for detecting the accelerations in three directions perpendicular to each other. CONSTITUTION: When acceleration is added to the strain gages 111, 112, 121, 122, 131, 132 of a circuit part built-in a golf club and these resistances are changed, the output signals are obtained from a bridge circuit comprising strain gages 113, 114, 123, 124, 133, 134, amplified by amplifiers 115, 125, 135, and then is inputted to a modulator 302, after successively switched by an analogue signal switcher 300. The signal modulated by an oscillation signal from an oscillator 301, is outputted from an antenna 304 to a space as a weak radio wave through an amplifier 303. The signal received by an antenna 305, is amplified by an amplifier 306, and detected by a wave detector 307, demodulated by a demodulator 308, discriminated by a discriminator 309 into the acceleration data of x, y and z axes, and then inputted to ADC 310 to be converted into digital signals.</p> |
