U.S. Department of EnergyOffice of Scientific and Technical Information
Two examples of intelligent systems based on smart materials
Abstract
Two intelligent systems are described which are based on smart materials. The operation of the systems also rely on conventional well known technologies such as electronics, signal conditioning, signal processing, microprocessors and engineering design. However without the smart materials the development and integration into the intelligent systems would not have been possible. System 1 is a partial discharge monitor for on-line continuous checking of the condition of electrical power transformers. The ultrasonic and radio frequency detectors in this system rely on special piezoelectric composite integrated with a compact annular metal ring. Partial discharges set up ultrasonic and radio frequency signals which are received by the integrated detectors. The signals are amplified, conditioned, signal processed, the time interval between the two signals measured and the level of partial discharge activity averaged and assessed for numerous pairs and alarms triggered on remote control panels if the level is dangerous. The system has the capability of initiating automatic shutdown of the transformer once it is linked into the control computers of the electrical power authority. System 2 is called a Security Cradle and is an intelligent 3D shield designed to use the properties of electro active polymers to prevent hardware hackers from stealingmore »
- Authors:
-
- Univ. of Technology-Sydney, Broadway, New South Wales (Australia). Centre for Materials Technology
- Publication Date:
- OSTI Identifier:
- 395144
- Report Number(s):
- CONF-940691-
ISBN 1-56676-171-9; TRN: IM9648%%267
- Resource Type:
- Conference
- Resource Relation:
- Conference: 2. international conference on intelligent materials, Williamsburg, VA (United States), 5-8 Jun 1994; Other Information: PBD: 1994; Related Information: Is Part Of Second international conference on intelligent materials: Proceedings; Rogers, C.A.; Wallace, G.G. [eds.]; PB: 1410 p.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 24 POWER TRANSMISSION AND DISTRIBUTION; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; POWER SYSTEMS; ON-LINE MEASUREMENT SYSTEMS; TRANSFORMERS; MONITORING; MEMORY DEVICES; SECURITY; USES; DATA PROCESSING; PIEZOELECTRICITY; COMPOSITE MATERIALS; COMPUTERIZED CONTROL SYSTEMS; EQUIPMENT PROTECTION DEVICES
Citation Formats
Unsworth, J. Two examples of intelligent systems based on smart materials. United States: N. p., 1994.
Web.
Unsworth, J. Two examples of intelligent systems based on smart materials. United States.
Unsworth, J. 1994.
"Two examples of intelligent systems based on smart materials". United States.
@article{osti_395144,
title = {Two examples of intelligent systems based on smart materials},
author = {Unsworth, J},
abstractNote = {Two intelligent systems are described which are based on smart materials. The operation of the systems also rely on conventional well known technologies such as electronics, signal conditioning, signal processing, microprocessors and engineering design. However without the smart materials the development and integration into the intelligent systems would not have been possible. System 1 is a partial discharge monitor for on-line continuous checking of the condition of electrical power transformers. The ultrasonic and radio frequency detectors in this system rely on special piezoelectric composite integrated with a compact annular metal ring. Partial discharges set up ultrasonic and radio frequency signals which are received by the integrated detectors. The signals are amplified, conditioned, signal processed, the time interval between the two signals measured and the level of partial discharge activity averaged and assessed for numerous pairs and alarms triggered on remote control panels if the level is dangerous. The system has the capability of initiating automatic shutdown of the transformer once it is linked into the control computers of the electrical power authority. System 2 is called a Security Cradle and is an intelligent 3D shield designed to use the properties of electro active polymers to prevent hardware hackers from stealing valuable of sensitive information from memory devices (e.g., EPROMS) housed in computer or microprocessor installations.},
doi = {},
url = {https://www.osti.gov/biblio/395144},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 1994},
month = {Sat Dec 31 00:00:00 EST 1994}
}