论文标题
在恶劣条件下进行声学测量的“ DIY”数据采集系统
A "DIY" data acquisition system for acoustic field measurements under harsh conditions
论文作者
论文摘要
监测活跃的火山是一项持续而重要的任务，有助于理解和预测火山喷发。近年来，分析喷发的声学特性变得更加相关。我们提出了一个廉价，轻巧，便携式，易于使用的和模块化的声学数据采集系统，用于现场测量，该系统可以记录最多100〜KHz的数据。该系统基于Raspberry Pi 3 B，运行自定义的裸金属操作系统。它连接到具有麦克风传感器的外部模拟 - 数字转换器。 GPS接收器允许记录位置，此外，还可以同步地记录非常准确的时间信号与声学数据。因此，多个模块可以有效地作为单个麦克风阵列工作。整个系统可以以低成本建造，并且只需最少的技术基础设施。我们通过在意大利西西里岛的奥利群岛中在活跃的火山\ textit {stromboli}上部署20个模块，证明了这种麦克风阵列的使用。我们使用收集的声学数据来缩小所有记录的喷发的声源位置。
Monitoring active volcanos is an ongoing and important task helping to understand and predict volcanic eruptions. In recent years, analysing the acoustic properties of eruptions became more relevant. We present an inexpensive, lightweight, portable, easy to use and modular acoustic data acquisition system for field measurements that can record data with up to 100~kHz. The system is based on a Raspberry Pi 3 B running a custom build bare metal operating system. It connects to an external analog - digital converter with the microphone sensor. A GPS receiver allows the logging of the position and in addition the recording of a very accurate time signal synchronously to the acoustic data. With that, it is possible for multiple modules to effectively work as a single microphone array. The whole system can be build with low cost and demands only minimal technical infrastructure. We demonstrate a possible use of such a microphone array by deploying 20 modules on the active volcano \textit{Stromboli} in the Aeolian Islands by Sicily, Italy. We use the collected acoustic data to indentify the sound source position for all recorded eruptions.
