Featured Research

from universities, journals, and other organizations

Zeroing in on the 'science of sound propagation' in burning buildings

Date:
October 23, 2012
Source:
Acoustical Society of America (ASA)
Summary:
An acoustic navigation system being developed by a team of researchers studying the science of sound propagation inside burning buildings may one day become a life-saving addition to firefighters’ arsenal of tools.

An acoustic navigation system being developed by a team of University of Texas at Austin researchers studying the science of sound propagation inside burning buildings may one day become a life-saving addition to firefighters' arsenal of tools.

Related Articles


The team will provide details about their multi-faceted research at the Acoustical Society of America's 164th Meeting, October 22-26, 2012, in Kansas City, Missouri.

"Our study is focusing on locating open doors inside burning buildings to gain a better understanding of how acoustic propagation is affected when flames are between the device and a doorway," explains Mustafa Abbasi, a graduate research assistant.

Inside buildings engulfed in flames and smoke, firefighters currently rely on tools such as thermal imaging cameras to help them not only detect obstacles and passageways, but also to judge distances to them. But unfortunately, heat and open flames can significantly degrade the performance of these cameras.

To address this, the team decided to create a complementary sonar-based imaging technique to supplement TIC technology.

They initially selected an ultrasonic device similar to the ones used in cars' reverse parking sensors to build their acoustic navigation device, but quickly discovered that fire strongly distorts ultrasonic acoustic waves.

The team then turned to a more advanced acoustic source, called a "parametric array," which is capable of creating audible sound that remains focused.

"Using a parametric array enables us to effectively see through moderate-sized flames," says Abbasi. "Now, we're investigating the effect of smoke on acoustic propagation. Flames and smoke are interrelated, but TIC images are degraded less by smoke. We believe that combining acoustic sensing with other technologies will improve the capabilities of these imaging devices."

Yet another facet of this project involves working to improve personal alert safety system (PASS) devices used to locate incapacitated firefighters. The team is collaborating with the National Fire Protection Association's Fire Protection Research Foundation and the Federal Emergency Management Agency (FEMA) to study how the signal emitted by the PASS device propagates inside burning buildings.


Story Source:

The above story is based on materials provided by Acoustical Society of America (ASA). Note: Materials may be edited for content and length.


Cite This Page:

Acoustical Society of America (ASA). "Zeroing in on the 'science of sound propagation' in burning buildings." ScienceDaily. ScienceDaily, 23 October 2012. <www.sciencedaily.com/releases/2012/10/121023123956.htm>.
Acoustical Society of America (ASA). (2012, October 23). Zeroing in on the 'science of sound propagation' in burning buildings. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2012/10/121023123956.htm
Acoustical Society of America (ASA). "Zeroing in on the 'science of sound propagation' in burning buildings." ScienceDaily. www.sciencedaily.com/releases/2012/10/121023123956.htm (accessed October 25, 2014).

Share This



More Matter & Energy News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
Real-Life Transformer Robot Walks, Then Folds Into a Car

Real-Life Transformer Robot Walks, Then Folds Into a Car

Buzz60 (Oct. 24, 2014) Brave Robotics and Asratec teamed with original Transformers toy company Tomy to create a functional 5-foot-tall humanoid robot that can march and fold itself into a 3-foot-long sports car. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Police Testing New Gunfire Tracking Technology

Police Testing New Gunfire Tracking Technology

AP (Oct. 24, 2014) A California-based startup has designed new law enforcement technology that aims to automatically alert dispatch when an officer's gun is unholstered and fired. Two law enforcement agencies are currently testing the technology. (Oct. 24) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins