Development of a nodal rotational seismometer with a micro-electro-mechanical system sensor and testing of H/V spectral ratios
JIA Song1(), HE Zhan-Xiang2,3,4, YANG Hui4,3,2, YAO Yong-Chao2,3,4, WANG Cai-Xia1()
1. School of Applied Science, Beijing Information Science & Technology University, Beijing 100192, China 2. Department of Earth and Space Science, Southern University of Science and Technology, Shenzhen 518055, China 3. Guangdong Provincial Key Laboratory of Geophysical High-resolution Imaging Technology, Southern University of Science and Technology, Shenzhen 518055, China 4. Shenzhen Key Laboratory of Deep Offshore Oil and Gas Exploration Technology, Southern University of Science and Technology, Shenzhen 518055, China
In response to the increasing demand for large-scale field seismic acquisition, this study developed a low-cost multifunctional nodal rotational seismometer (RBWL) with a micro-electro-mechanical system (MEMS) sensor, considering the functionality, economic feasibility, and the ease of arrangement. The RBWL employs a low-cost and low-power MEMS sensor to acquire seismic signals, involving three-component translational motions (Tx,Ty,Tz) and three-component rotational motions (Rx,Ry,Rz). To reduce the impacts of environmental factors on measurements, the system of the RBWL automatically records real-time information including temperature and attitude while performing compensation correction on the measurement results. For real-time monitoring and data transmission at acquisition nodes, the system establishes a data transmission link integrating 4G, cloud, and client, with the measured maximum data transmission rate up to 100 Mbps. The testing of H/V spectral ratios verifies the system functions and principal performance parameters of the RBWL and its effectiveness in engineering physical exploration.
贾松, 何展翔, 杨辉, 幺永超, 王彩霞. 基于MEMS的节点式旋转地震仪的研发及H/V谱比测试[J]. 物探与化探, 2024, 48(6): 1471-1478.
JIA Song, HE Zhan-Xiang, YANG Hui, YAO Yong-Chao, WANG Cai-Xia. Development of a nodal rotational seismometer with a micro-electro-mechanical system sensor and testing of H/V spectral ratios. Geophysical and Geochemical Exploration, 2024, 48(6): 1471-1478.
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doi: 10.3969/j.issn.1000-1441.2021.01.002
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