Abstract:In this paper, typical methods of earthquake early warning and intensity reporting are analyzed, and an asymmetric sensor based seismic intensity instrument is proposed for earthquake early warning and seismic intensity rapid reporting. This instrument is composed by an asymmetric three-component accelerometer and a special data collector built by the ARM embedded system. Through tests, the special data collector has a dynamic range greater than 107 dB. In the asymmetric three-component accelerometer, the selected class B accelerometer holds a measuring error less than 0.8% and a dynamic range greater than 105 dB. The selected class C accelerometer holds a measuring error less than 5% and a dynamic range greater than 61 dB. Therefore, the instrument meets the technical requirements for the comprehensive application of earthquake early warning and seismic intensity rapid reporting. Also, the instrument has the characteristics of low cost and low power consumption, and is suitable for density applications.
FU Jihua,WANG Xu,GUO Yunkai et al. Asymmetric Sensor Based on Seismic Intensity Instrument for Earthquake Early Warning and Seismic Intensity Rapid Reporting[J]. jgg, 2017, 37(12): 1308-1312.