Retrofit automatic seismic wave detector and valve shutoff device
OwnerMohammad Taghi Fatehi, Parham Reza Fatehi +1inventors
InventorsMohammad Taghi Fatehi, Parham Reza Fatehi, Keyvan Fatehi
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Abstract
A retrofit valve shutoff device is provided that comprises a coupling key for coupling with an actuator of a shutoff valve on a fluid supply line, an inertial measurement unit for generating one or more signals in response to arrival of seismic waves, a motor for rotating the coupling key and the actuator of the shutoff valve, and a processing unit for receiving the one or more signals from the inertial measurement unit, analyzing the received signals to determine whether to close the shutoff valve, and sending a signal to the motor to rotate the coupling key and the actuator of the shutoff valve to close the shutoff valve based on the analysis of the received signals.
Claims25
A valve shutoff device, comprising:
- a coupling key for coupling with an actuator of a shutoff valve on a fluid supply line;
- an accelerometer for making acceleration measurements in three directions;
- a motor for rotating the coupling key and the actuator of the shutoff valve;
- a radio transceiver;
- and
- a processing unit for:
- receiving the acceleration measurements from the accelerometer;
- determining an arrival of a first set of seismic waves comprising primary seismic waves (P-waves) when a ratio of a power magnitude of the acceleration measurements in a vertical direction with respect to a vector sum of the power magnitude of the acceleration measurements in the three directions exceeds a first threshold;
- after determining the arrival of the P-waves, determining an arrival of a second set of seismic waves when the vector sum of the power magnitude of the acceleration measurements in the three directions exceeds a second threshold;
- after determining the arrival of the second set of seismic waves, sending one or more signals to the motor to rotate the coupling key and the actuator of the shutoff valve to close the shutoff valve;
- and
- sending one or more signals through the transceiver to one or more electronic devices external to the valve shutoff device indicating whether the shutoff valve is open or closed,
- wherein the processing unit is one of a microprocessor, a controller, a microcontroller, a single processor, and a multi-core processor.
Dependencies are inferred from the claim text.