检波器的多频混合校准方法研究

Research on the Multi-Frequency Hybrid Calibration Method of Detectors

摘要: 在进行地震监测时，为了保证数据的准确性，需要定期地对地震检波器进行校准，校准周期一般为一年。目前对于地震检波器的校准主要存在校准成本高，可操作性差的问题。针对这一问题本文提出了多频混合校准方法，它用多频信号去激励传感器，这样做首先可以和随机校准一样能够提高校准效率和检测传感器的非线性因素，另外多频信号比随机信号更容易产生和控制，不需要采用振动分析仪等昂贵设备，提高试验的可操作性，降低了成本。于是，本文对多频混合校准方法进行研究，设计了地震检波器的多频混合校准系统。

Abstract: To ensure data accuracy during earthquake monitoring, seismic detectors need to be calibrated regularly, typically annually. Currently, seismic detector calibration suffers from high costs and poor operability. To address this issue, this paper proposes a multi-frequency hybrid calibration method. This method uses multi-frequency signals to excite the sensor. This approach, like random calibration, improves calibration efficiency and detects sensor nonlinearities. Furthermore, multi-frequency signals are easier to generate and control than random signals, eliminating the need for expensive equipment such as vibration analyzers, thus improving experimental operability and reducing costs. Therefore, this paper studies the multi-frequency hybrid calibration method and designs a multi-frequency hybrid calibration system for seismic detectors.