Automatic seismic wave detector and valve controller
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United States of America Patent
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Dec 29, 2020
Grant Date -
N/A
app pub date -
Jan 3, 2020
filing date -
Jan 4, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A valve controller device for controlling a set of one or more solenoid valves is provided. The valve controller comprises an accelerometer for making acceleration measurements in three directions comprising acceleration measurements in a vertical direction. The valve controller comprises a processing unit that determines the arrival of seismic P-waves when the ratio of vibrations' power in the vertical direction with respect to a sum of the vibrations' power in the three directions exceeds a first threshold. The processing unit then determines the arrival of seismic S-waves when the vector sum of the vibrations' power in the three directions exceeds a second threshold. The processing unit then determines the arrival of seismic surface waves when the vector sum of the vibrations' power in the three directions exceeds a third threshold. The processing unit then sends one or more signals to close the set of solenoid valves.
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Cited Art Landscape
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