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    • 1. 发明授权
    • Sensor apparatus and method for detecting earthquake generated P-waves and generating a responsive control signal
    • 用于检测地震产生的P波并产生响应控制信号的传感器装置和方法
    • US07005993B2
    • 2006-02-28
    • US10652654
    • 2003-08-28
    • Craig WebbJean-Pierre Guite
    • Craig WebbJean-Pierre Guite
    • G01W1/00
    • G01V1/008G08B21/10
    • A P-wave sensing apparatus including a printed circuit board having mounted thereon from one to three orthogonally disposed miniature sensors that function as inertia monitoring devices with respect to motion of the external supporting structures, a plurality of amplifying and filtering circuits for amplifying and filtering the outputs generated by the sensors, and a central processing unit responsive to the amplified signals and operative to generate output signals which can be used to drive optical and audible annunciators, automated data recording systems, or other device actuating systems. Each sensor is formed by a thin piezo-electric film sandwiched between two metallization layers and is laminated to a small rectangular sheet of polyester mounted in cantilever fashion with one edge thereof firmly affixed to a supporting circuit board or clamped between two flat, solid layers (such as miniature circuit boards) and then firmly affixed to the main supporting circuit board. A small mass is attached near the free end of the cantilever, improving the inertia sensing capability of the system by increasing the signal-to-noise ratio within the desired frequency range of motion
    • 一种P波感测装置,包括一个印刷电路板,其上安装有一个至三个正交布置的小型传感器,其作为关于外部支撑结构的运动的惯性监测装置,多个用于放大和滤波的放大和滤波电路 由传感器产生的输出,以及响应于放大的信号的中央处理单元,并且可操作地产生可用于驱动光学和可听报警器,自动数据记录系统或其它设备致动系统的输出信号。 每个传感器由夹在两个金属化层之间的薄压电薄膜形成,并且被层压到以矩形安装的小矩形片材上,其中一个边缘牢固地固定在支撑电路板上或夹在两个平坦的固体层之间 如微型电路板),然后牢固地固定在主支撑电路板上。 在悬臂的自由端附近安装一个小的质量块,通过增加所需频率范围内的信噪比来提高系统的惯性感应能力