Magnetic Field Sensor
A Magnetic Field Sensor is pretty much exactly what it sounds like. They detect the magnetic fields emitted by magnets of either a temporary or permanent nature, and allow extrapolation of where the magnetic poles are.
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The debut of a new type of magnetic resonance sensor for brainwaves and electrical activity - which changes the game totally for both fMRI and MEG. For the first time ever, portable, low-cost versions of both are actually a possibility.
AMPERE is one of the many dedicated networks necessary to protect and grow a fledgeling sensor web. Looking down from space, 66 satellites monitor the Earth's electromagnetic field - and watch for spikes.
RFID ? Radio Frequency Identification. These small tags are starting to drift everywhere. Powered by the radio field the reader sends out when it scans for a tag, these tiny, primitive devices may actually be heralds of the sensor web.
Imagine a world where every bolt that holds together the frame of the building you are in, holds together the car you drive, the planes in the air, and heavy machinery all around, is also a sensor. A vibration sensor, torque sensor, continually reporting on the stresses and strains on the structure in real-time. This is what German engineers have been working on for a number of years, and such screws and bolts are what they have now succeeded in making.
The first known, successful implant of an extra sensory perception to detect magnetic fields the person with the new sense was near, occurred in 2005, when a small piece of neodymium, which is a rare earth metal, that forms a permanent magnet, was coated in a thin layer of silicon, and implanted into an emergency medical technician's finger.
How do you set up a sensor web in a forest? Solar power is useless thanks to the canopy. Wildlife will get tangled up in the cables, as will people trying to manage the forest. Units need to be monitored for damage requiring dedicated staff on-site. If only we could fix all these problems, we could use sensor webs in remote areas... What's that? They're all fixed, you say?
German researchers have made advances in the sensor systems that detect if a window is open or closed, by using of all things, a heavily modified washing machine tumble sensor. It detects movement ofthe window flawlessly, by the exact same means.
Researchers at the University of California demonstrate how to turn thousands of private iPhones into a single real-time sensor web, with the help of a plug-in sensor, and an app that provides enough real immediate benefit to the iPhone users thatthey'll run it much of the time. In this case, air quality sensors, complementing (and exceeding) the capabilities of the traditional air quality weather stations.
A technological scent sensor that works in almost the exact same manner as a bog's biological nose has been developed by researchers at the University of California. The sensor, the size of an adult male fingerprint, uses microfluidic nanotechnology to mimic the biological mechanism behind canine scent receptors. The device is both highly sensitive to trace amounts of certain vapour molecules, and able to tell a specific substance apart from similar molecules.
A novel take on the sensor web has been unveiled by US firm Xhale incorporated, consists of a wireless network of soap dispensers, which contain sensors capable of detecting whether the hand waved under it, has recently been sanitized or not.
Industry News containing the Term Magnetic Field Sensor:
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A method called ultra-low field magnetic resonance imaging (MRI) has captured its first, blurry shots of a human brain, revealing activity as well as structure with only a tiny magnetic field.
MRI scanners take their imagesby...
There's a challenge facing electronics engineers attempting to build magnetic memory that can store data for more than 10 years or so. The density at which this data is stored depends on the size of the magnetic grains used for this proces...
A tiny sensor that is not much bigger than a grain of rice can detect magnetic fields as weak as those produced by a mouse's heart.
The sensor, known as an atomic magnetometer, could be used sensing brain activity. It can de...
A new magnetic variance sensor will not only detect the tiniest magnetic fluctuations, but is also immune to magnetic interference itself.
This is something of a holy grail to VR motion detection, not to mention its other use...
Birds that navigate using the Earth's magnetic field rely more on their eyes than on the magnetic particles in their nostrils, an experiment on robins suggests.
Rival theories of bird navigation have suggested both mechanism...