Forum für Wissenschaft, Industrie und Wirtschaft

Hauptsponsoren:     3M 
Datenbankrecherche:

 

New sensor cable enables remote monitoring of miles of perimeter fen

27.03.2013
Airports, nuclear power stations, industrial and research sites, or even your own garden – there are many places that need to be protected against unauthorized access, and often protection is required 24 hours a day, seven days a week.

Up until now, the sheer length of the perimeter to be protected and the high costs involved made this sort of protection impossible at many sites. Working in collaboration with a number of companies, research scientists at Saarland University have developed a new type of surveillance technology that enables extended perimeters to be monitored and protected at low cost.


Scientists from Saarland University have developed a special sensor technique to keep safety fence under surveillance. Foto: GBA-Panek GmbH

The new technology is based on magnetometers (magnetic field sensors) that can be incorporated within smart cables of essentially any length. These cables can themselves be installed into fencing or roadways.

The research team is presenting its innovative technology at the major international technology fair Hannover Messe from April 8th to April 12th (Stand C 40, Hall 2 ‒ Saarland Research and Innovation Stand).

If an intruder wants to gain access to a secure industrial site, he first has to overcome some sort of physical barrier, typically a fence. If he climbs the fence or cuts the links he will, unavoidably, cause a vibrational disturbance, which will disclose his position to the novel detection system that has been developed by Uwe Hartmann, Professor for Experimental Physics at Saarland University, and research assistant Haibin Gao. No matter how small the disturbance, each movement of the fence influences the Earth's magnetic field and these changes are detected by the system's tiny, highly sensitive magnetometers.

The magnetometer probes are arranged within the cable like beads on a necklace and the cable is incorporated either permanently or temporarily into the fence. The cable can also be buried in the ground, in which case it responds to any changes in the magnetic field above it. The tiny probes form part of a bus communication network and immediately report any physical disturbance or change including information on where the vibration occurred and whether or not the change in the magnetic field was caused by a human intruder.
The researchers need to be able to exclude false alarms triggered by wind, animals or some other harmless cause. This they do by using complex algorithms to analyse the signals generated by the individual sensors. These algorithms are currently being developed and refined in order to unambiguously distinguish natural disturbances from the disturbances caused by a human intruder.

“The smart sensor cable does not require any major conversion work to be carried out before it can be used, and makes barbed wire and camera surveillance superfluous,” says Professor Hartmann. “The system does not record any personal data. The sensors report only the information that is needed for protecting property or for monitoring, say, rail traffic: Has a disturbance occurred? If it has, where did it occur and was it caused by human interference? No other information about the person is recorded,” explains Hartmann.

The prototype of the “Vibromag Cable” that Uwe Hartmann and his team developed in conjunction with St. Ingbert-based company Votronic Technology GmbH is now to be developed to production standard. This is the objective of a new project starting in August 2013 in which the Saarbrücken physicists will be teaming up with three partner companies, each of which became aware of the new technology at the 2012 Hannover Messe. The three companies are: Sensitec GmbH, based in Mainz and Lahnau (www.sensitec.com), Listec GmbH from Isen (www.listec-gmbh.com), and GBA-Panek GmbH whose headquarters are in Kahla, south of Jena (www.gba-panek.de).

The Saarland Research and Innovation stand at Hannover Messe is organized by Saarland University's Contact Centre for Technology Transfer (KWT).

For further information, please contact:
Prof. Dr. Uwe Hartmann, Nanostructure Research and Nanotechnology Group,
Department of Experimental Physics, Saarland University, Germany
Tel.: +49 (0)681 302-3799 or -3798; E-mail: u.hartmann@mx.uni-saarland.de
Press photographs are available at www.uni-saarland.de/pressefotos and can be used at no charge. Please read and comply with the conditions of use.

Note for radio journalists: Studio-quality telephone interviews can be conducted with researchers at Saarland University using broadcast audio IP codec technology (IP direct dial or via the ARD node 106813020001). Interview requests should be addressed to the university’s Press and Public Relations Office (+49 (0)681 302-3610).

Melanie Löw | Universität des Saarlandes
Further information:
http://www.uni-saarland.de

More articles from HANNOVER MESSE:

nachricht Measurement of components in 3D under water
01.04.2015 | Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF

nachricht Artificial hand able to respond sensitively thanks to muscles made from smart metal wires
24.03.2015 | Universität des Saarlandes

All articles from HANNOVER MESSE >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: The pyrenoid is a carbon-fixing liquid droplet

Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.

A warming planet

Im Focus: Hochpräzise Verschaltung in der Hirnrinde

Es ist noch immer weitgehend unbekannt, wie die komplexen neuronalen Netzwerke im Gehirn aufgebaut sind. Insbesondere in der Hirnrinde der Säugetiere, wo Sehen, Denken und Orientierung berechnet werden, sind die Regeln, nach denen die Nervenzellen miteinander verschaltet sind, nur unzureichend erforscht. Wissenschaftler um Moritz Helmstaedter vom Max-Planck-Institut für Hirnforschung in Frankfurt am Main und Helene Schmidt vom Bernstein-Zentrum der Humboldt-Universität in Berlin haben nun in dem Teil der Großhirnrinde, der für die räumliche Orientierung zuständig ist, ein überraschend präzises Verschaltungsmuster der Nervenzellen entdeckt.

Wie die Forscher in Nature berichten (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005), haben die...

Im Focus: Highly precise wiring in the Cerebral Cortex

Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.

The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...

Im Focus: Tiny lasers from a gallery of whispers

New technique promises tunable laser devices

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...

Im Focus: Wundermaterial Graphen: Gewölbt wie das Polster eines Chesterfield-Sofas

Graphen besitzt extreme Eigenschaften und ist vielseitig verwendbar. Mit einem Trick lassen sich sogar die Spins im Graphen kontrollieren. Dies gelang einem HZB-Team schon vor einiger Zeit: Die Physiker haben dafür eine Lage Graphen auf einem Nickelsubstrat aufgebracht und Goldatome dazwischen eingeschleust. Im Fachblatt 2D Materials zeigen sie nun, warum dies sich derartig stark auf die Spins auswirkt. Graphen kommt so auch als Material für künftige Informationstechnologien infrage, die auf der Verarbeitung von Spins als Informationseinheiten basieren.

Graphen ist wohl die exotischste Form von Kohlenstoff: Alle Atome sind untereinander nur in der Ebene verbunden und bilden ein Netz mit sechseckigen Maschen,...

Alle Focus-News des Innovations-reports >>>

Anzeige

Anzeige

IHR
JOB & KARRIERE
SERVICE
im innovations-report
in Kooperation mit academics
Veranstaltungen

11. BusinessForum21-Kongress „Aktives Schadenmanagement"

22.09.2017 | Veranstaltungen

Internationale Konferenz zum Biomining ab Sonntag in Freiberg

22.09.2017 | Veranstaltungen

Die Erde und ihre Bestandteile im Fokus

21.09.2017 | Veranstaltungen

 
VideoLinks
B2B-VideoLinks
Weitere VideoLinks >>>
Aktuelle Beiträge

11. BusinessForum21-Kongress „Aktives Schadenmanagement"

22.09.2017 | Veranstaltungsnachrichten

DFG bewilligt drei neue Forschergruppen und eine neue Klinische Forschergruppe

22.09.2017 | Förderungen Preise

Lebendiges Gewebe aus dem Drucker

22.09.2017 | Biowissenschaften Chemie