- Volume 61 Issue 6
DOI QR Code
Design and Implementation of Seismic Data Acquisition System using MEMS Accelerometer
MEMS형 가속도 센서를 이용한 지진 데이터 취득 시스템의 설계 및 구현
- Received : 2012.03.02
- Accepted : 2012.04.30
- Published : 2012.06.01
In this paper, we design a seismic data acquisition system(SDAS) and implement it. This system is essential for development of a noble local earthquake disaster preventing system in population center. In the system, we choose a proper MEMS-type triaxial accelerometer as a sensor, and FPGA and ARM processor are used for implementing the system. In the SDAS, each module is realized by Verilog HDL and C Language. We carry out the ModelSim simulation to verify the performances of important modules. The simulation results show that the FPGA-based data acquisition module can guarantee an accurate time-synchronization for the measured data from each axis sensor. Moreover, the FPGA-ARM based embedded technology in system hardware design can reduce the system cost by the integration of data logger, communication sever, and facility control system. To evaluate the data acquisition performance of the SDAS, we perform experiments for real seismic signals with the exciter. Performances comparison between the acquired data of the SDAS and the reference sensor shows that the data acquisition performance of the SDAS is valid.
Seismic data acquisition system;Earthquake early warning system;MEMS;Accelerometer;FPGA
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Supported by : 한국연구재단