| 摘要 |
PROBLEM TO BE SOLVED: To detect the pressure applied to a cable-like pressure sensor by a vibration voltage detecting means and also detect the mean temp. of a flexible piezoelectric body from the capacitance detected by a capacitance detecting means. SOLUTION: A vibration voltage detecting means 7 and a capacitance detecting means 8 are connected between a core electrode 3 and a flexible outer electrode 5. In this arrangement the pressure applied to a cable-like pressure sensor is detected by the conventional vibration voltage detector 7, the capacitance of a flexible piezoelectric body 4 is detected, and utilizing its temp. characteristic, the temp. of the flexible piezoelectric body 4 can be also detected.
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