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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Transformation of Ground Vibration Signal for Debris-Flow Monitoring and Detection in Alarm Systems
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Transformation of Ground Vibration Signal for Debris-Flow Monitoring and Detection in Alarm Systems

机译：用于报警系统泥石流监测和检测的地面振动信号转换

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摘要

Debris flows are fast mass movements formed by a mix of water and solid materials, which occur in steep torrents, and are a source of high risks for human settlements. Geophones are widely used to detect the ground vibration induced by passing debris flows. However, the recording of geophone signals usually requires storing a huge amount of data, which leads to problems in storage capacity and power consumption. This paper presents a method to transform and simplify the signals measured by geophones. The key input parameter is the ground velocity threshold, which removes the seismic noise that is not related to debris flows. A signal conditioner was developed to implement the transformation and the ground velocity threshold was set by electrical resistors. The signal conditioner was installed at various European monitoring sites to test the method. Results show that data amount and power consumption can be greatly reduced without losing much information on the main features of the debris flows. However, the outcome stresses the importance of choosing a ground vibration threshold, which must be accurately calibrated. The transformation is also suitable to detect other rapid mass movements and to distinguish among different processes, which points to a possible implementation in alarm systems.
机译：泥石流是由水和固体物质混合形成的快速质量运动，发生在陡峭的山洪中，是人类住区的高风险来源。地震检波器被广泛地用于检测由泥石流通过引起的地面振动。但是，地震检波器信号的记录通常需要存储大量数据，这导致存储容量和功耗方面的问题。本文提出了一种转换和简化地震检波器测量信号的方法。关键输入参数是地面速度阈值，该阈值可消除与泥石流无关的地震噪声。开发了一种信号调节器来执行该转换，并通过电阻器设置地面速度阈值。信号调节器已安装在欧洲的多个监视站点以测试该方法。结果表明，在不丢失有关泥石流主要特征的大量信息的情况下，可以大大减少数据量和功耗。但是，结果强调选择地面振动阈值的重要性，该阈值必须准确校准。该转换也适合于检测其他快速的质量运动并区分不同的过程，这表明可能在警报系统中实现。

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