Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Early Warning System for Dikes Passes Field Test

17.11.2014

Sensors and intelligent systems for analyzing sensor data can detect damage to dikes at an early stage, and thus protect longer dike segments as well.

Technology developed by Siemens for this has now passed its field test, which was conducted on a chain of sensors spread out along a length of five kilometers of a dike in Amsterdam. The sensor system permanently records and transmits data on the dike's condition. Experts believe such automated dike monitoring can reduce maintenance costs by ten to maximally 20 percent.

Dike protection is becoming more important around the world as sea levels rise and the incidence of storms increases. More than two-thirds of all European cities are now examining ways to protect themselves from river and ocean flooding. According to the Munich Re reinsurance company, flooding accounted for nearly 40 percent of all damage caused by natural disasters worldwide in 2013.

Real time information available

Waternet Amsterdam is the pilot customer for the dike monitoring trials and the operator of the local drinking and wastewater network. The company is also responsible for more than 1,000 kilometers of dikes. These dikes protect 700 square kilometers of land on which more than one million people live. The dikes used to undergo main­tenance work every five to 30 years, depending on their material. Regardless if that was sand, clay, peat, or soil, the dikes' stability had to be measured at regular intervals. Experts inspected them every few years and sank measuring devices into the ground.

Today, information can be called up in real time on smartphones. In order to extend sensor battery life, reports on dike conditions are only sent once an hour, although if danger is detected reports will be sent in one-minute intervals. The data is collected by sensors that are inserted into the dike around every 100 meters. The sensors are located above and below the surface of the water, where they measure the temperature, pressure, and humidity within the dike, as well as the depth and temperature of the water in the canal. The results are then sent via GPRS to a control center, where the data is processed and compared with long-term historical measurements.

Warmer dike means water has seeped in

If, for example, an interior temperature of 14 degrees Celsius is measured within a dike, it could be an indication that the levee is about to break because warmer water has seeped in. That's because groundwater - and thus the inside of a dike - has a temperature of about eight degrees. The system compares the real-time data with the history. For example, it measures the height of the water table and then calls up data on the amount of precipitation that normally falls in the area at that time of year- and whether there was a recent drought that would allow the dike to take in more water or if the dike is already saturated. The material the dike is made of also plays a role because it makes it possible to determine how likely a landslide is.

The neural networks used can distinguish between typical and atypical deviations. They can often sound an alarm weeks or months before a problem occurs. If conditions along a number of sections are the same, the software system can even draw precise conclusions about those dike sections which are not equipped with sensors.


Weitere Informationen:

http://www.siemens.com/innovationnews

Dr. Norbert Aschenbrenner | Siemens InnovationNews

More articles from Power and Electrical Engineering:

nachricht Energy hybrid: Battery meets super capacitor
01.12.2016 | Technische Universität Graz

nachricht Tailor-Made Membranes for the Environment
30.11.2016 | Forschungszentrum Jülich

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

Im Focus: Fraunhofer ISE Develops Highly Compact, High Frequency DC/DC Converter for Aviation

The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

UTSA study describes new minimally invasive device to treat cancer and other illnesses

02.12.2016 | Medical Engineering

Plasma-zapping process could yield trans fat-free soybean oil product

02.12.2016 | Agricultural and Forestry Science

What do Netflix, Google and planetary systems have in common?

02.12.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>