| 摘要 |
PROBLEM TO BE SOLVED: To provide a quartz oscillator sensor system capable of reducing the number of precise frequency counters used therefor more than the number of sensors while keeping high precision with being hardly influenced by noises, in a system using a QCM sensor with a number of sensor heads located in mutually separate positions. SOLUTION: In a measuring system including a plurality of quartz oscillator sensors, a counter for signals transmitted from the sensors, a frequency converter which converts and matches the frequencies of generation signals of the respective sensors to the band of the counter, and a data processor which performs an operation reverse to the conversion from the measured values to determine the oscillating frequencies of the sensors, the frequencies are converted so that the signals of the respective sensors are matched to the measuring band of the counter, and the converted signals are measured by the frequency counter over a period until they reach a predetermined frequency probability to determine the oscillating frequency of the sensors. COPYRIGHT: (C)2005,JPO&NCIPI
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