Featured Research

from universities, journals, and other organizations

Penn State Researchers Develop "Smart" Fence To Signal Intrusion

Date:
October 23, 2001
Source:
Penn State
Summary:
Penn State researchers have developed an inexpensive approach to equipping new or existing fences with the capability to detect, locate and classify intruders.

University Park, Pa. --- Penn State researchers have developed an inexpensive approach to equipping new or existing fences with the capability to detect, locate and classify intruders.

Dr. David C. Swanson, associate professor of acoustics and senior research associate at the University's Applied Research Laboratory (ARL), led the team that developed the approach at ARL's Institute for Emerging Defense Technologies. He says the approach is particularly appropriate for use in large fenced areas, for example, around airports, cattle ranches, military bases, high schools or embassies.

The new fence security system uses an inconspicuous tensioned wire as an extended sensor. The wire can be attached to any new or existing fence and is used to monitor the vibrations in the fence.

Swanson says, "The approach uses geophones – inexpensive, rugged, off-the-shelf ground sensor technology hooked up to the tensioned wire – and a low-cost embedded PC and software." The software, developed at ARL, enables the user to suppress background or environmental vibrations, sort through the signal carried by the wire and pinpoint information that indicates intrusion.

"Using the new approach, you can have the fence call you when there is an intrusion. You can also manage how sensitive you want the response," Swanson adds. "For example, you can have the fence call whenever a squirrel goes by or only when a larger animal gets through the fence." In addition to being sensitive, rugged and inconspicuous, the new system is cost effective. Competing systems equipped, for example, with microwave or co-axial cable technology, are much more expensive. A high tech prison fence, for example, can cost about $165 per foot. The researchers estimate that their approach would cost less than $1 per foot, plus about $5,000 for the central processor to retrofit a typical existing fence.

The new approach locates the site of intrusion by monitoring the vibrations in the fence and precisely detecting the time of arrival of signals from two or more locations. Measured differences between the signal's arrival times indicate the point at which the intrusion occurs. In addition, the system can classify the type of disturbance as well as locate the point of contact along the fence. Even careful climbing by an intruder, for example, would change the loading on the fence and signal that a human intruder was present rather than a squirrel. This information can be used by security personnel to plan a response or even to deploy less-than-lethal weapons or deterrents, automatically, to dissuade intruders from further invasion.

A prototype of the fence has been installed around ARL's engine test facility at Penn State's auto test track at the Pennsylvania Transportation Institute. The University has also applied for a provisional patent application on the invention. Besides Swanson, the inventors include Dr. Nicholas C. Nicholas, ARL senior research associate, and David A. Rigsby, a consultant. The research was supported by the Applied Research Laboratory.


Story Source:

The above story is based on materials provided by Penn State. Note: Materials may be edited for content and length.


Cite This Page:

Penn State. "Penn State Researchers Develop "Smart" Fence To Signal Intrusion." ScienceDaily. ScienceDaily, 23 October 2001. <www.sciencedaily.com/releases/2001/10/011023072121.htm>.
Penn State. (2001, October 23). Penn State Researchers Develop "Smart" Fence To Signal Intrusion. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2001/10/011023072121.htm
Penn State. "Penn State Researchers Develop "Smart" Fence To Signal Intrusion." ScienceDaily. www.sciencedaily.com/releases/2001/10/011023072121.htm (accessed July 28, 2014).

Share This




More Matter & Energy News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) — Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) — TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) — Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) — When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins