Monitoring the temperature of curing concrete with a build-your-own DA system, securing a Flash drive with a fingerprint sensor, and using lasers to monitor vibration for the Air Force Institute of Technology.
IC Thermal Sensors Simplify Your Design
Silicon-based IC temperature sensors may be the new kids on the block, but with their small size, integrated signal conditioning, and easy interfacing to microcontrollers, they're rapidly increasing in popularity.
A Magnetostrictive Torque Sensor
A new fabrication technique solves the problem of an external magnetic field's adverse effects on a magnetostrictive torque sensor.
Measuring Flow with Strain and Sound
A new type of volumetric flowmeter measures strain exerted by eddies in the process fluid as well as the speed of sound propagation, which can be used to determine fluid composition in both single- and multiphase streams.
Motion Control in Extreme Electromagnetic Fields
What better time to administer a drug or carry out a medical procedure than when the patient is revealing all to an MRI scan? But how can the necessary equipment be safely introduced into and function properly within the high electromagnetic fields of the scanner environment?
Making sure shoes fit, testing maglev train track, and checking that those drug vials contain the correct amount of medicine.
Reality Mining: Browsing Reality with Sensor Networks
Sensors streaming their data online are turning the Internet into a global sensor network. Software platforms that integrate and mine these data streams may create a world in which sensors become pixels and we browse reality as easily as we browse Web pages today.
Advances in Analog Distance Sensing
This introduction to noncontact displacement sensors will be helpful to anyone who's thinking about adding one or more inductive, ultrasonic, or optical devices to an automated manufacturing operation.
The Basics of Fiber Bragg Gratings
Fiber Bragg gratings, originally developed to multiplex signals in optical networks, are now allowing sensors to detect strain, pressure, temperature changes, and other physical properties.
Air quality sniffers, thermal IR imagers on high, and a phone that knows which direction it's facing.
Securing Wireless Networks
As more companies go wireless with industrial sensor or commercial WiFi-based networks, data security is increasingly important. Here's a symmetric, private-key-based encryption and authentication technique for wireless security.
Understanding Solar Cell Physics: Key to Better Testing Methodology
Solar cell development and production requires extensive material and device evaluation to improve efficiency and match individual cells for panel construction. This makes fast testing highly desirable, but requires an understanding of cell physics and its measurement implications.
The Sensor Web: A Distributed, Wireless Monitoring System
The Sensor Web is a distributed sensing system in which information is globally shared and used by all networked platforms. It's already been deployed long term in different environments and is opening up new avenues for distributed sensing and control.
Sensor Technology and Design:
A Single-Chip Pressure Sensor for the Automotive Market
Combining silicon micromachining designs and processes with advanced mixed-signal CMOS circuitry overcomes many of the early limitations of single-chip sensors. The result is a high-performance single-chip piezoresistive pressure sensor with an amplified and calibrated output.
Spin-Dependent Tunneling: A New Magnetic Sensing Technology
Quantum mechanical tunneling, when combined with magnetic scattering due to the spin of electrons, results in an exciting new phenomenon called spin-dependent tunneling. Sensors based on this property will doubtless enter the commercial arena within the next two years.
MOS Air Quality Sensors Make Vehicle Cabins Safer
Federal and local emissons standards are cleaning up automotive exhausts, but they're not much help to occupants of a car that's stuck in traffic or passing a pulp mill. Here's a sensor that will clear the air.
RFID baggage tracking for airports, keeping colors consistent in commercial printing, and using robots to automate packaging processes.
When Safety Matters: Using Active RFID Down the Mines
RFID technology can help businesses in many ways. But the greatest promise may lie in enhanced security, access control, and safety for workers in dangerous environments. The RFID system Watcher-ATS has proven particularly useful in mining and offshore oil platform applications.
Iris-Based Recognition: Keep Your Eye on It!
A quick, simple, noncontact, noninvasive way to prove who you are can race you through customs, let you into restricted areas, or keep your children safe at school. It's all in the eyes.
Smart sprinkling for greener pastures, high-schoolers weathering the tropics, and snuffing fire in fighting vehicles.