Smartphone Sensor System Tracks Gunfire
Engineers from Vanderbilt University have developed an inexpensive hardware module and related software that can transform an Android smartphone into a simple shooter location system. They described the new system’s capabilities this month at the 12th Association for Computing Machinery/Institute of Electrical and Electronics Engineers Conference on Information Processing in Sensor Networks in Philadelphia.
(Smartphone-based system for identifying gunshot location)
First, there is the muzzle blast – an expanding balloon of sound that spreads out from the muzzle each time the rifle is fired. Second, bullets travel at supersonic velocities so they produce distinctive shockwaves as they travel. As a result, a system that combines an array of sensitive microphones, a precise clock and an off-the-shelf microprocessor can detect these signatures and use them to pinpoint the location from which a shot is fired with remarkable accuracy.
In addition to the smartphone, the system consists of an external sensor module about the size of a deck of cards that contains the microphones and the processing capability required to detect the acoustic signature of gunshots, log their time and send that information to the smartphone by a Bluetooth connection. The smartphones then transmit that information to the other modules, allowing them to obtain the origin of the gunshot by triangulation.
The researchers have developed two versions. One uses a single microphone per module. It uses both the muzzle blast and shockwave to determine the shooter location. It requires six modules to obtain accurate locations. The second version uses a slightly larger module with four microphones and relies solely on the shockwave. It requires only two modules to accurately detect the direction a shot comes from, however, it only provides a rough estimate of the range.
Greg Bear uses this idea in his 2007 novel Quantico; see the entry for weapon sound tracker (this entry contains a part of an interview I conducted with Bear about his book):
Sound trackers on the roof could zero in on weapons action and coordinate return fire through UAVs and their only other air support, the Superhawk.
Via Vanderbilt University News.
Scroll down for more stories in the same category. (Story submitted 4/27/2013)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 1 )
Related News Stories -
iBubble Scuba Drone Follower
'Hovered behind him like a large tame bee...' - Karen Traviss, 2004.
'Eye In The Sky' Movie Borrows 35, 80 Year-Old SF
SF writers don't have a problem seeing decades into the future.
Voice-Recognition Door DIY
'Almost all our locks are phonographic.' - Clement Fezandie, 1921.
The Eye Is Watching! Samsung Gear 360 Camera
'It scooped up the eye that had been witnessing its activities.' - Robert Silverberg, 1969.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Brick By Brick, Building Martian Bases
Don't try to boost everything from the surface of the Earth.
SpotMini Robot Pierson's Puppeteer-Style
Now they're kind of cute, right?
Elon Musk et. al. OpenAI Household Robot
'Any work a human being does around a house.'
BRUISE Smart Injury Detection Suit
'... Bee could see that three of them were disabled and two of them damaged.'
Tesla Model S Is Also A Boat (Sort Of)
'This Dick Dare contraption of yours...'
Promobot, The Runaway Russian Robot!
'Got yourself a runaway, Jack?'
Rowbot Small Autonomous Farm Robot
'...The tiny red glints of self-guided tractors.'
Amazon's Alexa To Recognize Emotions
Oh, Hal understood their emotions, all right.
Cool 'Single-Person Spaceships' Have Better SF Name
'A cabin so small, you couldn't stand up with the air lock closed..'
First Robot Suicide Has Science Fiction Roots
'What had happened to prevent my death?'
First US Clinical Trial For Wearable Artificial Kidney
'Wholly mechanical organs...'
Open Bionics To Produce Deus Ex Prosthetic Designs
Be a part of a science fictional future.
Human-Carrying Drone Taxi 184 Approved For Test Flights
'The cab was an egg-shaped bubble...'
Skating On Mars' Frozen Pools
'They went down, put on their skates, and started.'
Google Working On A 'Cutoff Switch' For AI
'A remote control, so you can pull the plug on Hal whenever you want to.'
Vi Artificially Intelligent Personal Trainer
More SF in the News Stories
More Beyond Technovelgy science news stories