The researchers expect that with the help of sensors it will be possible to monitor the stability of the protective walls, with measurements accurate to within one meter.
On the basis of the measurements, self-controlling software can then forecast dangerous situations before they happen, making it possible to implement measures in good time. The systems is currently being field-tested at Livedijk in Eemshaven, the Netherlands. Siemens Corporate Technology in Russia is developing the technology together with partners for the UrbanFlood research project funded by the European Commission, as the research magazine "Pictures of the Future" reports.
Worldwide there are 136 coastal cities with populations of over one million that rely on the protection of dikes and levees. The pressure on these protective barriers is mounting because the climate change tends to cause the sea level to rise, and gives us good reason to expect more frequent storms. Until now, levees have been secured by either building them higher or reinforcing them, but this only buys time. Another strategy is the analysis of levees to identify sections that are at risk of being breached. “Smart bulwarks” could even predict fractures or the impact of flooding before they have a chance to happen.
For the levee monitoring the Siemens experts are using software designed for the monitoring of production facilities and providing it with new parameters. They determine these parameters from measurements taken at test levees and dikes that were intentionally destroyed using different methods, including by eroding the back side of a dike. This is what led to the disaster of the North Sea flood of 1953, for instance. Another test involves simulating the effects of water that bores a tunnel through the levee, which was one of the reasons for the devastating flooding in New Orleans. Now the software in use at Livedijk is learning to correctly interpret the data measured by the sensors under real conditions. In order to incorporate seasonal influences such as precipitation and wind directions in the analysis, this field test is being conducted for two years.
Other project partners are working on alarm notification options, for example via all mobile phones or navigation devices registered in the region at risk. In a next step, the researchers will equip levee and dike sections in Amsterdam and Saint Petersburg with the early warning system and monitor critical changes by means of an Internet-based software platform. In the long term they want to connect all levees and dikes worldwide to this platform and thus create a global monitoring system.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
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21.09.2017 | Sonderforschungsbereich 668
Drones can almost see in the dark
20.09.2017 | Universität Zürich
At the productronica trade fair in Munich this November, the Fraunhofer Institute for Laser Technology ILT will be presenting Laser-Based Tape-Automated Bonding, LaserTAB for short. The experts from Aachen will be demonstrating how new battery cells and power electronics can be micro-welded more efficiently and precisely than ever before thanks to new optics and robot support.
Fraunhofer ILT from Aachen relies on a clever combination of robotics and a laser scanner with new optics as well as process monitoring, which it has developed...
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
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...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
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