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.

Related Articles


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 November 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 November 28, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

NASA's First 3-D Printer In Space Creates Its First Object

NASA's First 3-D Printer In Space Creates Its First Object

Newsy (Nov. 26, 2014) — The International Space Station is now using a proof-of-concept 3D printer to test additive printing in a weightless, isolated environment. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) — Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) — Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) — Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
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:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

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