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Title: Electronic security device

Abstract

The present invention relates to a security device having a control box (12) containing an electronic system (50) and a communications loop (14) over which the system transmits a signal. The device is constructed so that the communications loop can extend from the control box across the boundary of a portal such as a door into a sealed enclosure into which access is restricted whereby the loop must be damaged or moved in order for an entry to be made into the enclosure. The device is adapted for detecting unauthorized entries into such enclosures such as rooms or containers and for recording the time at which such entries occur for later reference. Additionally, the device detects attempts to tamper or interfere with the operation of the device itself and records the time at which such events take place. In the preferred embodiment, the security device includes a microprocessor-based electronic system (50) and a detection module (72) capable of registering changes in the voltage and phase of the signal transmitted over the loop.

Inventors:
 [1];  [2];  [2]
  1. (Richland, WA)
  2. (Kennewick, WA)
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA
OSTI Identifier:
868198
Patent Number(s):
US 5097253
Assignee:
Battelle Memorial Institute (Richland, WA) PNNL
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electronic; security; device; relates; control; box; 12; containing; 50; communications; loop; 14; transmits; signal; constructed; extend; boundary; portal; door; sealed; enclosure; access; restricted; whereby; damaged; moved; entry; adapted; detecting; unauthorized; entries; enclosures; containers; recording; time; occur; reference; additionally; detects; attempts; tamper; interfere; operation; records; events; preferred; embodiment; microprocessor-based; detection; module; 72; capable; registering; changes; voltage; phase; transmitted; preferred embodiment; signal transmitted; security device; microprocessor-based electronic; sealed enclosure; device detects; detecting unauthorized; /340/368/

Citation Formats

Eschbach, Eugene A., LeBlanc, Edward J., and Griffin, Jeffrey W. Electronic security device. United States: N. p., 1992. Web.
Eschbach, Eugene A., LeBlanc, Edward J., & Griffin, Jeffrey W. Electronic security device. United States.
Eschbach, Eugene A., LeBlanc, Edward J., and Griffin, Jeffrey W. Wed . "Electronic security device". United States. doi:. https://www.osti.gov/servlets/purl/868198.
@article{osti_868198,
title = {Electronic security device},
author = {Eschbach, Eugene A. and LeBlanc, Edward J. and Griffin, Jeffrey W.},
abstractNote = {The present invention relates to a security device having a control box (12) containing an electronic system (50) and a communications loop (14) over which the system transmits a signal. The device is constructed so that the communications loop can extend from the control box across the boundary of a portal such as a door into a sealed enclosure into which access is restricted whereby the loop must be damaged or moved in order for an entry to be made into the enclosure. The device is adapted for detecting unauthorized entries into such enclosures such as rooms or containers and for recording the time at which such entries occur for later reference. Additionally, the device detects attempts to tamper or interfere with the operation of the device itself and records the time at which such events take place. In the preferred embodiment, the security device includes a microprocessor-based electronic system (50) and a detection module (72) capable of registering changes in the voltage and phase of the signal transmitted over the loop.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}

Patent:

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