VIBRATION INDICATOR WITH VIBRATION/TEMPERATURE COMPLEX SENSOR

摘要

PURPOSE: A vibration indicator having a vibration/temperature complex sensor is provided to obtain precise amendment value by compensating the temperature dependency of a vibration sensor with an output value of a temperature sensor. CONSTITUTION: A vibration indicator includes a vibration/temperature complex sensor(10) having a vibration sensing ceramic element(11) for converting a charge amount signal of a high impedance generated by vibration to a voltage signal of a low impedance to output, and a temperature detecting ceramic element(12) attached to a lower part of an alumina substrate of the vibration sensing ceramic element for detecting a temperature change of the vibration sensing ceramic element, and a driving part for driving the vibration/temperature complex sensor and obtaining a pure vibration value by amending a measured vibration value in consideration of a measured temperature value sensed by the temperature detecting ceramic element, wherein the driving part includes a memory for recording output change values with respect to the temperature-dependency of the ceramic elements for converting impedances measured in advance, vibration sensor and temperature sensor driving parts respectively having a variable constant current source, and a CPU(Central Processing Unit) for operating the pure vibration value of which a temperature dependency output change value is amended.