×

Seismic detection and response system

  • US 7,375,646 B1
  • Filed: 05/05/2006
  • Issued: 05/20/2008
  • Est. Priority Date: 05/20/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A seismic switch comprising:

  • at least one accelerometer;

    a pressure sensor;

    a controller operationally coupled with the at least one accelerometer and the pressure sensor, wherein the controller is configured to monitor signals from the accelerometer and the pressure sensor to detect an earthquake and to detect an explosion, wherein an earthquake is distinguished from an explosion based upon a signal from the pressure sensor;

    a door release circuit operationally coupled with the controller and configured to release a door upon detection of an earthquake or an explosion; and

    an emergency call circuit operationally coupled with the controller and configured to initiate an emergency call upon detection of an explosion but not upon detection of an earthquake.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×