Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

LID-Er Prevents Forest Fire

18.11.2002


The earlier the smoke in a forest will be detected, the easier it would be for firemen to stop the fire from spreading. The problem of forest fires have always been one of the most difficult and dangerous problems. Russian scientists from MULTITECH Ltd. have developed an equipment, which can help solving the problem.



Right now the equipment is not of much use, because autumn rains have already quenched forest and turf fires. However, if the scientists put their invention to industrial production by the next summer, it will really improve the situation. Laser beam can easily detect a fire and then, if needed, alarm the operator at the central control. A single LID-Er, as it was named, can observe a square up to 100 thousand hectares.

A strong laser beam periodically controls atmosphere conditions. Smoke is opaque for laser light, so the beam reflects back. A special telescopic system "catches" the signal, amplifies it and sends to computer. If after several minutes (on the second pass) the smoke is detected once more at the same point, computer will compare intensities of first and second signals, taking more measures if needed and carrying out the process dynamics. If the smoke density gradually increases, the computer will send an alarm signal to the operator’’s desk. Then it’’s up to the operator to decides, whether to send a firemen brigade to the dangerous place.


The question is that of eye safety of such system, because the beam energy is very high. High-energy lasers are used even for cutting thick steel sheets, so it will be an accident if such beam somehow strikes an eye. To prevent such cases, the beam wavelength was selected from "eye safe" range, so that it doesn’’t hurt sensitive organs.

Will the LID-Er see campfire smoke? "It should", assures one of the developers, Andrey Alekseev. " The question is the distance and smoke density. We’’ve been working on these questions using our experimental model".

Olga Maksimenko | alfa
Further information:
http://www.informnauka.ru/eng/2002/2002-11-15-02_254_e.htm

More articles from Ecology, The Environment and Conservation:

nachricht Scientists on the road to discovering impact of urban road dust
18.01.2018 | University of Alberta

nachricht Gran Chaco: Biodiversity at High Risk
17.01.2018 | Humboldt-Universität zu Berlin

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

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

Im Focus: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

Im Focus: A thermometer for the oceans

Measurement of noble gases in Antarctic ice cores

The oceans are the largest global heat reservoir. As a result of man-made global warming, the temperature in the global climate system increases; around 90% of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

Polymers Based on Boron?

18.01.2018 | Life Sciences

Bioengineered soft microfibers improve T-cell production

18.01.2018 | Life Sciences

World’s oldest known oxygen oasis discovered

18.01.2018 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>