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Method of calculating output frequency of pressure sensor, tsunami warning device by atmospheric pressure observation using it, tsunami warning system
Method of calculating output frequency of pressure sensor, tsunami warning device by atmospheric pressure observation using it, tsunami warning system
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机译：压力传感器的输出频率的计算方法，使用其进行大气压观测的海啸预警装置，海啸预警系统
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摘要
PROBLEM TO BE SOLVED: To provide a method of computing a pressure sensor output frequency, which enables accurate time synchronization.SOLUTION: A method of the present invention for computing a pressure sensor output frequency involves computing a frequency of a square wave generated by a pressure sensor, and is characterized in that, when counting a number of square waves within a time frame, a starting square wave overlapping with start time of the time frame is counted as a time period (T) of a portion thereof inside the time frame divided by a time period (T) of the starting square wave, and an ending square wave overlapping with end time of the time frame is counted as a time period (T) of a portion thereof inside the time frame divided by a time period (T) of the ending square wave.SELECTED DRAWING: Figure 3
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