Fenced-in areas, such as airports, nuclear power stations, industrial sites, or private plots of land, can now be monitored thanks to novel sensor technology that has been developed by a team of experimental physicists, led by Professor Uwe Hartmann at Saarland University.
The sensors respond immediately as soon as someone tries to climb over or cut through the fence, providing information on the precise location of the security breach. They are even able to detect a low-flying drone passing overhead. The thin cable containing the magnetic field sensors can be easily installed on perimeter fences of all kinds. The research team is currently working on developing the system so that it can recognize the cause of a disturbance and can automatically identify false alarms triggered by wind or animals. The team is collaborating with industrial partners to produce a cable suitable for mass production. The technology will be shown at HANNOVER MESSE from April 13th to April 17th. The team will be exhibiting at the Saarland Research and Innovation Stand in Hall 2, Stand B 46.
If someone tries to tamper with a fence, or if they try to climb over it or cut the links with bolt cutters, they will, unavoidably, cause a vibrational disturbance. The movement of the metal fence as it swings back and forth, the motion of the metal cutters or even the trespasser’s belt will all influence the Earth’s magnetic field. These changes are being exploited by a team of experimental physicists at Saarland University for a new type of surveillance technology. ‘Our magnetometers (magnetic field sensors) are highly sensitive and can reliably measure even the smallest of changes in the ambient magnetic field,’ explains Professor Uwe Hartmann. The sensors are even able to detect when a drone flies close by overhead – provided, of course, that the drone contains metal. ‘The sensors can detect disturbances in the surrounding magnetic field, including the magnetic field above them, with a range extending several metres,’ adds research assistant Haibin Gao who is working on the sensor technology as part of Hartmann’s team.
The cable, which contains the linearly arranged sensors, has a diameter comparable to a standard electrical cable and enables the remote monitoring of miles of perimeter fencing. ‘The cable can be attached to the fence, built into it or even buried beneath it. We are currently working with a number of companies to reduce the size of the system and, most importantly, to lower the cost of producing the sensors to a level where large-volume production becomes feasible,’ says Uwe Hartmann. The contactless sensors are not subject to wear and have a low power consumption. They are unaffected by rain or fog. ‘The sensors function independently of the weather and this gives them a significant advantage over other surveillance techniques, such as cameras, where moisture is often a problem. And the measurements are unproblematic from the point of view of privacy. The sensors simply report that a vibrational disturbance was caused by a human agent at a specific location. No other information is gathered,’ explains Professor Hartmann. A number of different types of sensor systems developed by his research group have already been deployed in traffic management systems, for example in airports.
The miniature sensors in the cable are networked and any change that they register is immediately transmitted to the analyser unit. The location of the disturbance can be specified with high precision, which is of particular value when monitoring very large areas. Scientists in Hartmann’s team are currently working on refining the technology so that the sensors are able to unambiguously assign a particular type of vibration or a particular change in the measured magnetic field to a specific type of disturbance.
The Latest on: Sensor network
via Google News
The Latest on: Sensor network
Shimmer President to Discuss the Optimal Use of Wearable Sensors in Clinical Trials at Body Sensor Networks 2019 Workshop
on May 18, 2019 at 9:07 pm
Presentation will cover the benefits, challenges and industry obstacles to gathering real-world evidence using wearable sensors in clinical trials CAMBRIDGE, MA – May 18, 2019 – Shimmer, a global ... […]
North America $21.1 Bn IoT Sensor Market to 2027 - Analysis and Forecasts by Type, Connectivity Type, and Application
on May 17, 2019 at 6:32 am
The North America IoT Sensor market accounted for US$ ... such as data or information which flows between the devices, networks, and sensors. For different sensors and devices in order to share ... […]
Researchers create washable sensor that can be woven into materials
on May 16, 2019 at 12:04 pm
The sensor can be woven into spandex material and then wrapped ... The research, published recently in Small was conducted by researchers at the Composites Research Network and the Advanced ... […]
Samsung Galaxy S10 5G now on sale via Verizon, but can only use 5G network in two cities
on May 16, 2019 at 10:15 am
On the front is a 10-megapixel selfie camera, and another 3D depth sensor. The main attraction for the device is its ability to connect to 5G networks, meaning Samsung has made it to market with a ... […]
Introducing Enlighted One: Easy Wireless Lighting Control with an IoT Future
on May 15, 2019 at 3:54 am
With a sensor IoT license and the addition of an IoT network, customers can simply subscribe to building IoT applications and unlock productivity gains for building occupants. “With Enlighted One, ... […]
C. Fla. smart sensor leaders dish on milestone, 5G internet speed, AR
on May 14, 2019 at 10:43 am
"Having the additional bandwidth and it being able to put more things into that overall air-connected network really is going to unlock ... Do you expect to see more smart-sensor business due to 5G ... […]
Bivio Networks and PacStar Introduce Integrated Portable Cyber Security Operations System for Tactical Deployments
on May 14, 2019 at 8:14 am
Similar to the Bivio TacRak-10G™ systems, TacRak-LITE supports a true multi-sensor environment that enables organizations to perform network flow analysis, threat analysis, deep packet ... […]
New Inertial Sensor Provides Resolution and Low Noise Density for Recording Vibrations
on May 14, 2019 at 7:11 am
Sweden and Denmark along with a worldwide partner network. US locations include Westlake Village, California, and Mansfield, Massachusetts. First Sensor AG is listed in the Prime Standard of the ... […]
A Proportional Integral Estimator-Based Clock Synchronization Protocol for Wireless Sensor Networks [technical]
on May 13, 2019 at 8:25 am
This post is an excerpt from the journal ISA Transactions. All ISA Transactions articles are free to ISA members, or can be purchased from Elsevier Press. Abstract: Clock synchronization is an issue ... […]
Understory Closes $5.25M Series B Funding Round to Expand Global Deployment of Weather Sensor Network
on May 13, 2019 at 4:00 am
MADISON, Wis.--(Business Wire)--Understory, the weather network and analytics company, today announced that is has closed a $5.25 million Series B funding round led by True Ventures with participation ... […]
via Bing News