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    • 1. 发明申请
    • MONITORING MICROSEISMIC EVENTS
    • 监测微生物活动
    • WO2016076729A1
    • 2016-05-19
    • PCT/NO2015/050204
    • 2015-11-05
    • OCTIO AS
    • BRANDSÆTER, HelgeLINDGÅRD, John EvenTATIANA, Mateeva
    • G01V1/28G01V1/24G01V1/36
    • G01V1/288G01V1/008G01V1/24G01V1/305
    • A system (100) for monitoring a subterranean structure comprises an array (10) with n acoustic sensors capable of detecting P-waves and/or S-waves from the subterranean structure and a central controller (120) for receiving a signal (X) from the sensors. The system further comprises a lookup table (20) comprising a pre-computed travel time curve (24) expressed as relative arrival times of a signal from a location (L m ) to each of the sensors (1-n); a comparison unit for comparing the received signal (X) with the pre-computed travel time curve (24), and means for raising an alarm if the received signal (X) matches the precomputed travel time curve (24). Preferably, the alarm is raised if a computed semblance value (26, 27) exceeds a predefined threshold. The system may monitor several locations (L m ) in parallel using a fraction of the computer resources and time required by prior art techniques.
    • 用于监测地下结构的系统(100)包括具有能够从地下结构检测P波和/或S波的n个声学传感器的阵列(10)和用于接收信号(X)的中央控制器(120) 从传感器。 该系统还包括查找表(20),其包括表示为从位置(Lm)到每个传感器(1-n)的信号的相对到达时间的预先计算的行进时间曲线(24) 用于将接收到的信号(X)与预先计算的行进时间曲线(24)进行比较的比较单元,以及如果接收到的信号(X)与预先计算的旅行时间曲线(24)匹配,则提高警报的装置。 优选地,如果所计算的外表值(26,27)超过预定义的阈值,则报警被提升。 该系统可以使用计算机资源的一部分和现有技术所需的时间并行地监视多个位置(Lm)。