Electronic security device
Abstract
The present invention relates to a security device having a control box containing an electronic system and a communications loop 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 and a detection module capable of registering changes in the voltage and phase of the signal transmitted over the loop. 11 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7074353
- Patent Number(s):
- 5097253
- Application Number:
- PPN: US 7-595778
- Assignee:
- Battelle Memorial Inst., Richland, WA (United States)
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 9 Oct 1990
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; ENTRY CONTROL SYSTEMS; DESIGN; OPERATION; DATA ACQUISITION; INTRUSION DETECTION SYSTEMS; NUCLEAR MATERIALS MANAGEMENT; RECORDING SYSTEMS; SAFEGUARDS; ALARM SYSTEMS; CONTROL SYSTEMS; MANAGEMENT; 055001* - Nuclear Fuels- Safeguards, Inspection, & Accountability- Technical Aspects
Citation Formats
Eschbach, E A, LeBlanc, E J, and Griffin, J W. Electronic security device. United States: N. p., 1992.
Web.
Eschbach, E A, LeBlanc, E J, & Griffin, J W. Electronic security device. United States.
Eschbach, E A, LeBlanc, E J, and Griffin, J W. Tue .
"Electronic security device". United States.
@article{osti_7074353,
title = {Electronic security device},
author = {Eschbach, E A and LeBlanc, E J and Griffin, J W},
abstractNote = {The present invention relates to a security device having a control box containing an electronic system and a communications loop 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 and a detection module capable of registering changes in the voltage and phase of the signal transmitted over the loop. 11 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 17 00:00:00 EST 1992},
month = {Tue Mar 17 00:00:00 EST 1992}
}