accelerometers
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Caltech laser accelerometer research may bring fine-tuned position tracking, grocery ads
One way that sensors can track your position without using an array of satellites is by measuring your acceleration as you move around -- but unless you're piloting a jumbo jet, current devices aren't very accurate. Researchers at Caltech hope to change all that with a new, ultra-sensitive accelerometer they developed, which uses laser light to detect motion changes. The scientists managed to shrink a so-called large-scale interferometer down to micro-scale sizes, creating a device "thousands of times faster than the most sensitive sensors used today." That could allow a smartphone with such a micro-sensor to detect your exact position even while inside a grocery store, and flash "ads and coupons for hot dog buns" while you're in the bread aisle, according to Caltech. All that sounds good, but we can perhaps think of more inspiring uses for the new tech.
Engineer Guy shows how a phone accelerometer works, knows what's up and sideways (video)
We love finding out how things work, and arguably one of the most important parts of the smartphones and tablets we thrive on is the accelerometer gauging our device's orientation. Imagine our delight, then, when we see the University of Illinois' Bill Hammack (i.e. The Engineer Guy) giving a visual rundown of how accelerometers work. Although it's certainly the Cliff's Notes version of what's going on in your Android phone or iPhone, the video does a great job of explaining the basic concepts behind three-axis motion sensing and goes on to illustrate how MEMS chips boil the idea down to the silicon form that's needed for our mobile hardware. Hammack contends that it's one of the coolest (and unsung) parts of a smartphone, and we'd definitely agree; you can see why in the clip after the break.
Windows Phone 7 turned into Windows 7 controller, 3D mice put on notice
You can pack all the gyroscopes, accelerometers and other motion-detecting sensors you want in your desktop -- it's still not going to be any good at playing Eliminate: Gun Range. That's the motivation behind developer Arik Poznanski's latest release. He has created a driver enabling his Windows Phone 7 to transmit its accelerometer data back to his Windows 7 desktop in real time. Currently the driver's not good for much beyond a tech demo, but given the different ways people have hacked their Wiimotes, it won't be long before homebrewed killer apps start appearing -- perhaps paired up with a little Kinect wizardry. If you're looking to get started at home, hit the source link below for more details. [Thanks, Sandip]
flOw wireless speaker concept flips jams based on your handling
She's but a concept at the moment, but David Boyce's flOw mockup certainly has legs. The five-speaker set can be arranged in a fanciful iPod docking station for in-home use, and on a whim, any of the speaker balls can be grabbed and taken elsewhere, all while the music follows via a touch of wireless magic. But that's hardly the kicker -- each ball has integrated gesture sensors and accelerometers, enabling the user to quiet the volume by turning it over or switch from "Smooth Operator" to "Master of Puppets" by simply jostling the speaker with an intense level of force. Talk about revolutionizing a played market sector. [Thanks, Paul]
KDDI concocts snooping mobile phones, line managers rub hands with glee
Sci-fi movies often present us with omniscient villains who are able to track the most minute actions of their underlings and foes. Rarely do we get a glimpse into their surveillance systems, but you have to imagine that some of the more rudimentary "employee evaluation" hardware will not be too far off from KDDI's latest. The Japanese cellphone giant has unveiled a new system, built around accelerometers, that can detect the difference between a cleaner scrubbing or sweeping a floor and merely walking along it. Based on new analytical software, stored remotely, this should provide not only accurate positional information about workers, but also a detailed breakdown of their activities. The benefits touted include "central monitoring, "salesforce optimisation," and improvements in employee efficiency. We're guessing privacy concerns were filed away in a collateral damage folder somewhere.
Casio EX-10HG 'hybrid GPS' prototype taps into accelerometers for pinpoint accuracy
It's not a completely new idea, accelerometers have been enhancing GPS devices for a while now with additional velocity and directional information when the GPS signal is weak, but now Casio is giving it a shot in its new Exilim EX-H10 prototype camera. The "hybrid GPS" shooter does the regular geotagging thing with its onboard GPS, but when signal is weak (like when indoors, for instance), the camera augments the location data with guesstimates gleaned from its onboard accelerometers. The camera also has pretty detailed maps, so you could almost use the device for navigation, though the "pushpin" view is a good start. Hit up the source link for some more shots.
Labyrinthine games with the DS Motion Cart
Looking back at the game now, Super Monkey Ball: Touch & Roll's stylus controls can't compete with the level of immersion and intuitiveness we're seeing with the Wii's labyrinthine games -- Mercury Meltdown Revolution, Dewey's Adventure, and Kororinpa: Marble Mania. Thanks to homebrew hardware like the MK6-Motion and the DS Motion Card, though, we can now emulate the same motion-sensing features on our handhelds. It's unlikely that any commercial release will ever acknowledge these unauthorized add-ons, but homebrew developers have already put out over twenty games and demos that use the data gathered from the accelerometers/gyroscope. Check past the post break for videos and screenshots of three puzzle titles that've been rigged to detect your tilting DS.
Virginia Tech football helmets monitor hits wirelessly
While the Virginia Tech Hokies tend to rely more on dazzling special teams teams play than sheer defensive prowess, the players take a lickin' regardless. In a presumed extension of Beamer Ball, the sparkly helmets donned by the football squad will sport internal accelerometers and wireless transmitters that beam (ahem) information about the seriousness of each blow to a Sybase database in order to tell if and when a certain player has had enough. The primary objective is to prevent any long-term injuries and detect concussions before individuals can even realize they're hurt, and an interesting byproduct of the system has shown what types of thwacks are typically sustained at different positions. The HITS (head impact telemetry system) technology could reportedly be used in places like the battlefield as well, or moreover, rigorous rounds of Wii Boxing -- but we're sure WVU's Punchstat system is already on top of that.[Photo courtesy of VT]
Your own private planetarium
Who knew that having a dome could be so cool? Paul Bourke outfitted one to create an immersive environment that he could steer through with a Wii remote. Using a data projector and specialized software on his MacBook Pro, he was able to display navigable movies on the hollow half-sphere.Considering its accelerometers and bluetooth functionality, the remote seems perfect as a low-cost interface device for this kind of setup, but Paul found that though the controller is usable, it isn't as accurate as he'd like. We hope that doesn't stop someone from creating a fully-developed astronomy simulation out of this! Check past the post break for video of the experiment in action.[Via Metafilter]
