| Summary: | 碩士 === 國立交通大學 === 土木工程系所 === 107 === In recent years, civil engineering has become increasingly popular in mobile applications. In the current earthquake warning system device, in order to consider the convenience, in the case of a handheld device, a mobile phone is mostly used as an early warning device. However, most of the current mobile phone early warning monitoring systems only have the function of early warning, and can only operate in a network environment, and at the same time lack the function of monitoring and analysis. This is a question of the poor performance of the original mobile phone. But with the rapid development of technology, the current mobile phone has multi-core functions in addition to sensors. In terms of performance, it is a significant improvement compared to the initial stage. Therefore, this paper attempts to use the powerful performance of the current mobile phone to complete the functions of detection, calculation, analysis, notification and early warning.
In the operation of the mobile phone, the occurrence of the earthquake is mainly determined by the trigger value (the ratio of STA and LTA).The user is notified when the trigger value is exceeded. Then calculate the absolute value of the absolute value of the acceleration, the absolute value of the absolute value of the absolute value, the absolute value of the absolute value of the displacement, the cumulative absolute speed, the squared integral of the velocity (IV2), and the effective mastering period (Tc), which are calculated into the regression equation.
The predicted peak ground acceleration (PGA) is presented to the mobile phone and is available to the user for viewing.
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