| 摘要 |
PROBLEM TO BE SOLVED: To detect the average temp. of a flexible piezoelectric body around a core electrode, based on the temp. dependence of the resistance of the core electrode detectable by resistance detecting means and also detect the pressure by vibration detecting means. SOLUTION: A resistance detecting means 8 and a vibration container detecting means 7 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 detecting means 7, the resistance across the core electrode 3 is detected by the resistance detecting means 8, and utilizing its temp. characteristic, the temp. of a flexible piezoelectric body 4 around the core electrode 3 can be also detected.
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