skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Seismic intrusion detector system

Abstract

A system for monitoring man-associated seismic movements within a control area including a geophone for generating an electrical signal in response to seismic movement, a bandpass amplifier and threshold detector for eliminating unwanted signals, pulse counting system for counting and storing the number of seismic movements within the area, and a monitoring system operable on command having a variable frequency oscillator generating an audio frequency signal proportional to the number of said seismic movements.

Inventors:
 [1];  [1];  [1];  [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
862663
Patent Number(s):
3984803
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G - PHYSICS G08 - SIGNALLING G08B - SIGNALLING OR CALLING SYSTEMS
DOE Contract Number:  
AT(29-1)-789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
seismic; intrusion; detector; monitoring; man-associated; movements; control; including; geophone; generating; electrical; signal; response; movement; bandpass; amplifier; threshold; eliminating; unwanted; signals; pulse; counting; storing; operable; command; variable; frequency; oscillator; audio; proportional; signal proportional; variable frequency; electrical signal; frequency signal; pulse counting; audio frequency; intrusion detector; threshold detector; frequency oscillator; seismic movement; pass amplifier; /367/340/

Citation Formats

Hawk, Hervey L, Hawley, James G, Portlock, John M, and Scheibner, James E. Seismic intrusion detector system. United States: N. p., 1976. Web.
Hawk, Hervey L, Hawley, James G, Portlock, John M, & Scheibner, James E. Seismic intrusion detector system. United States.
Hawk, Hervey L, Hawley, James G, Portlock, John M, and Scheibner, James E. Thu . "Seismic intrusion detector system". United States. https://www.osti.gov/servlets/purl/862663.
@article{osti_862663,
title = {Seismic intrusion detector system},
author = {Hawk, Hervey L and Hawley, James G and Portlock, John M and Scheibner, James E},
abstractNote = {A system for monitoring man-associated seismic movements within a control area including a geophone for generating an electrical signal in response to seismic movement, a bandpass amplifier and threshold detector for eliminating unwanted signals, pulse counting system for counting and storing the number of seismic movements within the area, and a monitoring system operable on command having a variable frequency oscillator generating an audio frequency signal proportional to the number of said seismic movements.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

Patent:

Save / Share: