Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

INTERGEO 2010: High-speed Laser Scanners for Railways and Roads

05.11.2010
Fraunhofer IPM had extremely fast laser scanners on show at the INTERGEO 2010 trade fair in Cologne, Germany. These eye-safe high-tech systems can record more than one million measuring points per second, measuring their distances down to a millimeter if required by customers or the application.

At INTERGEO 2010, the Freiburg based Fraunhofer Institute for Physical Measurement Techniques IPM had the latest developments in the field of fast distance measuring with laser scanners on show.

Apart from their outstanding scientific expertise, the measurement technology specialists also presented their years of experience in building complete system solutions. In recent years Fraunhofer IPM has acquired numerous customers worldwide thanks to the institution’s tailor-made system solutions, particularly for railway-specific applications.

Mobile mapping applications are growing in relevance in the road transport arena. This is where the fast, accurate, and eye-safe laser scanners from Fraunhofer IPM can prove their strengths as well.

New systems for railways

There are two different ways that laser scanners can contribute to smoothly flowing railway traffic: For mobile applications, the scanner is mounted on the train and measures the desired position data of objects near the track while moving past them. For stationary applications, the laser scanner remains at a fixed position at a monitoring station next to the track and measures the geometries of passing trains.

* Contact wire position recording: Recording the position of the contact wire is a common application for use on inspection cars. Today, state-of-the-art complete systems from Fraunhofer IPM record 400 measurement profiles per second. In this way, at a speed of 100 km/h, the desired position data can be obtained for up to four contact wires simultaneously at intervals of 7 cm, along with online analyses.

* Detecting objects and structures near the rail track: Another mobile application serves to detect objects and structures near the rail track, such as platforms, tunnels, or bridges. The required position and safety clearance data are recorded with the help of a circular scanner mounted on the front of the inspection train. Fraunhofer IPM's basic scanner uses one laser beam and a scan frequency of 200 Hz, while the high-speed version has two laser beams and a scan frequency of more than 550 Hz.

* Train monitoring: Train monitoring performed directly in the course of normal railway operations can increase rail track safety significantly – particularly in sensitive track sections such as tunnels or bridges. To this end, monitoring stations are equipped with laser scanners from Fraunhofer IPM at suitable places alongside the track. Passing cars together with their freight can then be checked for geometric irregularities with 800 measurements per second. This means that at a speed of 100 km/h, the train's geometry is measured at intervals of around 3 cm.

Road data – a new application

Mobile mapping vehicles were also an important subject at INTERGEO 2010. These are measuring vehicles that record the road and its surroundings. Fraunhofer IPM has developed special high-resolution scanners for this application that scan the road surface. These so-called pavement scanners measure elements such as ruts, transverse grooves, or frost cracks with a view to obtaining data on pavement quality. Mounted on a vehicle at a height of around 3 m above road level, the laser scanner is easily capable of recording road surface widths of 4 m while delivering a resolution of less than 1 mm.

About Fraunhofer IPM
The Fraunhofer Institute for Physical Measurement Techniques IPM develops and implements turn-key optical sensor and imaging systems. These mostly laser-based systems combine optical, mechanical, electronic and software components to create perfect solutions of robust design that are individually tailored to suit the conditions at the site of deployment. In the field of thermoelectrics, the institute occupies a leading position in materials research, simulation, and systems design. In thin film technology, Fraunhofer IPM works on materials, production processes, and systems; semiconductor gas sensors form a further field of activity.
Your contact:
Dr. Heinrich Höfler
Head of Department Optical Measurement for Production
Head of Railway Measurement
Phone +49 761 8857-173
heinrich.hoefler@ipm.fraunhofer.de

Holger Kock | Fraunhofer-Gesellschaft
Further information:
http://www.ipm.fraunhofer.de
http://www.ipm.fraunhofer.de/fhg/ipm_en/solutions_services/railroad_meas_tech/index.jsp

More articles from Trade Fair News:

nachricht Fraunhofer ISE with over 60 Contributions at the European PV Solar Energy Conference and Exhibition
21.09.2018 | Fraunhofer-Institut für Solare Energiesysteme ISE

nachricht IAA Commercial Vehicles 2018: Commercial vehicle model autonomously explores its surroundings
10.09.2018 | Technische Universität Kaiserslautern

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

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

Im Focus: Scientists present new observations to understand the phase transition in quantum chromodynamics

The building blocks of matter in our universe were formed in the first 10 microseconds of its existence, according to the currently accepted scientific picture. After the Big Bang about 13.7 billion years ago, matter consisted mainly of quarks and gluons, two types of elementary particles whose interactions are governed by quantum chromodynamics (QCD), the theory of strong interaction. In the early universe, these particles moved (nearly) freely in a quark-gluon plasma.

This is a joint press release of University Muenster and Heidelberg as well as the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt.

Then, in a phase transition, they combined and formed hadrons, among them the building blocks of atomic nuclei, protons and neutrons. In the current issue of...

Im Focus: Patented nanostructure for solar cells: Rough optics, smooth surface

Thin-film solar cells made of crystalline silicon are inexpensive and achieve efficiencies of a good 14 percent. However, they could do even better if their shiny surfaces reflected less light. A team led by Prof. Christiane Becker from the Helmholtz-Zentrum Berlin (HZB) has now patented a sophisticated new solution to this problem.

"It is not enough simply to bring more light into the cell," says Christiane Becker. Such surface structures can even ultimately reduce the efficiency by...

Im Focus: New soft coral species discovered in Panama

A study in the journal Bulletin of Marine Science describes a new, blood-red species of octocoral found in Panama. The species in the genus Thesea was discovered in the threatened low-light reef environment on Hannibal Bank, 60 kilometers off mainland Pacific Panama, by researchers at the Smithsonian Tropical Research Institute in Panama (STRI) and the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) at the University of Costa Rica.

Scientists established the new species, Thesea dalioi, by comparing its physical traits, such as branch thickness and the bright red colony color, with the...

Im Focus: New devices based on rust could reduce excess heat in computers

Physicists explore long-distance information transmission in antiferromagnetic iron oxide

Scientists have succeeded in observing the first long-distance transfer of information in a magnetic group of materials known as antiferromagnets.

Im Focus: Finding Nemo's genes

An international team of researchers has mapped Nemo's genome

An international team of researchers has mapped Nemo's genome, providing the research community with an invaluable resource to decode the response of fish to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

"Boston calling": TU Berlin and the Weizenbaum Institute organize a conference in USA

21.09.2018 | Event News

One of the world’s most prominent strategic forums for global health held in Berlin in October 2018

03.09.2018 | Event News

4th Intelligent Materials - European Symposium on Intelligent Materials

27.08.2018 | Event News

 
Latest News

Three NASA missions return first-light data

24.09.2018 | Physics and Astronomy

Brown researchers teach computers to see optical illusions

24.09.2018 | Information Technology

Astrophysicists measure precise rotation pattern of sun-like stars for the first time

21.09.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>