Earthquake sensor
专利汇可以提供Earthquake sensor专利检索，专利查询，专利分析的服务。并且PURPOSE:To accurately detect a seismic wave with one earthquake sensor only, by forming the bottom section of the container of the sensing section of the device in the form of a cone with a prescribed inclined angle and sensing the P wave in the preliminary tremor region and S wave in the principal earthquake region. CONSTITUTION:The bottom section 40a of the container 40 of a sensor section 20 is constituted in the form of a cone with a prescribed inclined angle theta and, at the same time, a double-layer liquid 43 composed of a liquid 41, such as mercury, and another liquid 42, such as hydraulic fluid for aircraft, is put in the container 40. Then a light source 46, such as LED, etc., and photoreceptor element 47 supported by a holding plate 48, and so forth, are installed to the container 40. When the double-layer liquid 43 oscillates due to the oscillation of an earthquake, etc., the surface shape of each liquid 41 and 42 changes and the luminance distribution in the container 40 varies. Then the AC component of the output 20a of the photoreceptor element 47 changes and the P wave is mainly detected in the preliminary tremor region of the earthquake. The S wave is mainly sensed in the principal earthquake region. Therefore, the P and S waves can be detected with high accuracy and high sensitivity by means of one set of the sensor 20 only.，下面是Earthquake sensor专利的具体信息内容。
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|---|---|---|
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