【摘要】 余震作为地震后的主要次生灾害，对救援人员和受灾区域的安全构成严重威胁。为了有效监测余震活动并为救援行动提供及时信息，针对缺乏公共网络支持、需要高度机动性和适应复杂环境的监测背景，构建了一种基于MEMS(Micro-Electro-Mechanical System)传感器和无线通信技术的余震流动监测预警系统。该系统通过临时部署可移动的余震流动监测单元，实时采集和分析地震数据，增强对地震活动的监测、分析和预警能力。硬件设计方面，系统采用了高精度MEMS三轴加速度传感器作为地震数据采集端，通过24位模数转换芯片将模拟信号转换为数字信号，并利用单片机进行数据处理，使用本地存储和终端存储确保数据的安全性，使用无线通信技术将地震波形数据传输到余震监测中心。软件设计方面，系统嵌入支持向量机现地地震动峰值预测模型，以实现对现地地震动峰值的预测。系统测试结果表明：余震流动监测预警系统能够有效采集地震加速度数据，并准确预测地震动峰值，发出可靠警报。通过测试，系统显示出在余震监测预警中的准确性、时效性与可靠性，对于指导救援行动和保证救援安全具有重要的实际意义。更多还原

【Abstract】 As a major secondary disaster after an earthquake, aftershocks pose a serious threat to the safety of rescuers and the affected areas. In order to effectively monitor aftershock activities and provide timely information for rescue operations, an aftershock flow monitoring and early warning system based on MEMS sensors and wireless communication technology was constructed for the monitoring background of lack of public network support, high mobility and adaptability to complex environments. The system collects and analyzes seismic data in real time by temporarily deploying a movable aftershock flow monitoring unit, enhancing the monitoring, analysis and early warning capabilities of seismic activity. In terms of hardware design, the system uses a high-precision MEMS three-axis accelerometer as the seismic data acquisition end, converts the analog signal into a digital signal through a 24-bit analog-to-digital conversion chip, and uses a single-chip microcomputer for data processing, uses local storage and terminal storage to ensure the security of the data, and uses wireless communication technology to transmit the seismic waveform data to the aftershock monitoring center. In terms of software design, the system embeds the support vector machine in-situ ground motion peak prediction model to realize the prediction of the in-situ ground motion peak. The test results show that the aftershock flow monitoring and early warning system can effectively collect seismic acceleration data, accurately predict the peak of ground motion, and issue reliable alarms. Through the test, the system shows the accuracy, timeliness and reliability in aftershock monitoring and early warning, which is of great practical significance for guiding rescue operations and ensuring rescue safety.更多还原