Article Index – 2004

All feature articles from this year are available online. Click the links below.

To see indexes for other years, click below.

For articles from 2005 onward, please visit our main web site: www.sensorsmag.com.

1984-1990
  1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990

1991-2000
  1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000

2001-2005
  2001 | 2002 | 2003 | 2004


December 2004
  • Guest Editorial: Ready, Set, Inspire

    Putting Sensors to Work:
  • Intelligent Fastening Opens New Era of Sensing Technology
    Fasteners with embedded intelligence tell you where they are and how they're working, and fasten and release when told.
  • Application Snapshots
    Listening to the Liberty Bell, laughing nuts, and sneeze reduction in the classroom.

    Intelligent Systems:
  • Understanding Your Wireless Options
    If you're lacking RF expertise but still want to add wireless communications to your sensor application, here's how wireless sensor networking currently stands.

    Sensor Technology and Design:
  • A Dozen Ways to Measure Fluid Level and How They Work
    The more you know about fluid level sensors-from sight glasses to guided-wave radar to lasers-the happier you will be with the technology you choose for your own application.
  • IR VSCELs and LEDs for Sensing Applications
    Here's what you need to know about infrared light-emitting diodes and vertical cavity surface-emitting lasers for your optical switch designs.


    Departments
      Business Sense
      Research & Developments
      Mel's Picks
      Wish List
      Advertiser Index


  • November 2004
  • Editorial: Wireless, Tiny Tech, and Security

    Putting Sensors to Work:
  • Flight Testing the Black Hawk
    A sophisticated software program is helping Army test pilots and data analysts evaluate helicopter airworthiness.
  • Application Snapshots
    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.

    Intelligent Systems:
  • Modeling a MEMS Gyro to Determine the Maximum Operational Angular Rates and g-Forces
    A "virtual" MEMS gyro's behavior was analyzed using software capable of modeling the mechanical and electrical effects of high rates and high accelerations.
  • An Attitude and Heading Reference System Based on Gyros, Flux Gates, and GPS
    Taking advantage of both solid-state gyros and GPS satellite data, a new attitude and heading reference system promises increased accuracy for experimental aviation pilots.

    Sensor Technology and Design:
  • 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.


    Departments
      Business Sense
      Research & Developments
      Mel's Picks
      Wish List
      Advertiser Index


  • October 2004
  • Editorial: Major Players' Moves

    Putting Sensors to Work:
  • Redundancy and Self-Diagnostics Enhance Process Safety Systems
    Sensors/transmitters with improved redundancy and diagnostics offer sizable savings for safety systems in the process industries.
  • Application Snapshots
    Improving pharmaceutical process control, cold rolling in the steel mill, and automating beverage can sortation.

    Intelligent Systems:
  • To Buy or Not to Buy? Are Ready-Made RF Systems Right for You?
    If you're an OEM looking to add wireless capabilities to your products, here are some important things to keep in mind.

    Sensor Technology and Design:
  • 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.
  • Shortwave IR Imaging in Machine Vision: Principles and Practice
    Before you specify your next machine vision system, check out what SWIR cameras can do for your manufacturing process.
  • Side-Polished Optical Fiber: From the Lab to the Line Card and Beyond
    High-quality side-polished fiber is now mass producible. The market for products based on this technology is enormous.


    Departments
      Business Sense
      Research & Developments
      Mel's Picks
      Wish List
      Advertiser Index


  • September 2004
  • Editorial: Approaching the Age of the Sensor

    Putting Sensors to Work:
  • 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?
  • Application Snapshots
    Making sure shoes fit, testing maglev train track, and checking that those drug vials contain the correct amount of medicine.

    Intelligent Systems:
  • 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.
  • The Benefits of a Subtractive Dither System for Data Acquisition
    A subtractive dither system minimizes signal dependencies and greatly extends the accuracy and usable dynamic range of any digitizer-without affecting storage bandwidth or capacity.
  • Measurement Services: More Than Just a Driver
    By definition, a device driver should expose the functionality of the hardware. While most accomplish this, the new breed of drivers gives you greater power and functionality.

    Sensor Technology and Design:
  • 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.
  • Electrolytic Tilt Sensors and Inclinometers: A Primer
    Electrolytic tilt sensors and their instrumented cousins, the inclinometers, can tell you whether and by how much something is leaning referenced to gravity.


    Departments
      Business Sense
      Research & Developments
      Mel's Picks
      Wish List
      Advertiser Index


  • August 2004
  • Editorial: Positive Rewards
  • 2004 Best of Sensors Expo Awards

    Putting Sensors to Work:
  • Accelerometers Jump into the Consumer Goods Market
    Accelerometers are being incorporated into electronic devices to measure tilt, motion, position, vibration, and shock. Among the benefits are ease of use and improved performance.
  • Application Snapshots
    Collecting environmental data in the wild, shunning nasty buildups, and "observing" the high-speed printer.

    Intelligent Systems:
  • Dynamic Precision with Embeddable DSPs
    As the need for precision sensing and control increases, DSP modular systems are emerging as a viable "smart" I/O tool.
  • Machine Vision: Adding the Third Dimension
    Electronic perception technology is a new way to make direct, rather than derived, depth measurements of target objects.

    Sensor Technology and Design:
  • Developing an IR Sensor Array for Multizone Temperature Measurement
    Single- or dual-zone IR thermopiles are already used for noncontact temperature measurement or thermal imaging. Now Melexis is developing a low-cost IR thermopile array for automotive use.
  • 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.


    Departments
      Business Sense
      Research & Developments
      Mel's Picks
      Wish List
      Advertiser Index


  • July 2004
  • Editorial: Positive Rewards

    Putting Sensors to Work:
  • Improving Indoor Weather with Carbon Dioxide Sensors
    Modern HVAC systems do far more than just blow warm or cool air around.
  • Application Snapshots
    Air quality sniffers, thermal IR imagers on high, and a phone that knows which direction it's facing.

    Intelligent Systems:
  • 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.

    Sensor Technology and Design:
  • Improving Ultrasonic Transit Time Calculations
    Smart sonic engineers are emulating bat echolocation to better determine transit time and improve noise rejection.
  • Piezoelectric Fiber Composites for Ultrasound Transduction
    Piezoelectric fiber composites exhibit superior properties for ultrasound transduction in nondestructive testing, sonar, and biomedical applications.
  • The Sensor Fish-Making Dams More Salmon-Friendly
    An instrumented package traveling with real fish through hydroelectric dams collects data on the often hazardous conditions that migrating salmon smolt encounter.


    Departments
      Business Sense
      Research & Developments
      Mel's Picks
      Wish List
      Advertiser Index


  • June 2004
  • Editorial: A Sure Thing for Homeland Security

    Putting Sensors to Work:
  • Don't Overlook UV Sensing
    Ultraviolet fluorescence sensors can solve many assembly and inspection problems simply and inexpensively.
  • Application Snapshots
    Spotting oil slicks early, measuring refrigerant temperature in tight spaces, and studying color changes in venomous snakes.

    Intelligent Systems:
  • The Realities of Dealing with Wireless Mesh Networks
    Mesh networking has great promise, but you need to understand the subtleties involved to effectively use a mesh network to meet your goals.
  • Blade-Tip Monitoring with Through-the-Case Eddy Current Sensors
    A new eddy current sensor can monitor turbine blade-tip timing and clearance through the housing, in the presence of contaminants, and at temperatures up to 1000F.

    Sensor Technology and Design:
  • A Novel Force Transducer and Load Cell Design Using "Leaky" Electromagnetic Waves
    A new technology lets you create high-performance load cells from virtually any material.
  • Verifying Sensor Response to Difficult Chemicals with a New Test Chamber Concept
    Chemicals with low volatility tend to present special problems when it comes to calibrating and verifying sensors that will be used to detect them. The challenge goes up a notch or two if the sensors must be tested under real-world conditions. But it can be done.
  • Flexible Force Sensors-In Touch with Modern Technology
    Thin, flexible, resistive force sensors are proving themselves in manufacturing, virtual reality, medical, and haptics research applications.


    Departments
      Business Sense
      Research & Developments
      Web Picks
      Wish List
      Advertiser Index


  • May 2004
  • Guest Editorial: The Next American Idle

    Click here for Sensors Expo & Conference Preview !
    Click here !

    Putting Sensors to Work:
  • Reducing Scrap with Wireless Data and Power
    Integrating a wireless sensing system on machining centers reduces scrap for a manufacturer of automotive transmission housings.
  • Application Snapshots
    Taming tricky carpets, hitting the brakes for science, and cerebral diagnostics from the road-or air.

    Intelligent Systems:
  • A Hybrid Magnetic Field Solver: Using a Combined Finite Element/Boundary Element Field Approach
    Magnetic analysis is a key component of motor design. Here's an explanation of a hybrid finite element/boundary element approach to solve for the magnetic fields involved.

    Sensor Technology and Design:
  • An Introduction to Classical Sinusoidal Vibration
    Sinusoidal vibration is the simplest and easiest to understand of all the forms of vibratory motion. So don't let the math scare you.
  • Solving Humidity Calibration Challenges in Today's Metrology Lab
    As a metrologist, you know you need to calibrate your humidity sensing equipment. But do you know how easy this exercise can be?
  • Power over the 1-Wire Net
    The 1-Wire fusion of network connection and power offers great economy, but the question of how to provide energy for the occasional indicator or sensor must be addressed.
  • Applying PID Control Algorithms in Sensor Circuits
    Although modern proportional-integral-derivative control is associated primarily with microprocessors, the fundamental principles of the technique can and should be applied to sensors as well.
  • 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.


    Departments
      Business Sense
      Research & Developments
      Web Picks
      Wish List
      Advertiser Index


  • April 2004
  • Editorial: The Growth of Excitement

    Click here for Sensors Expo & Conference Preview !
    Click here !

    Putting Sensors to Work:
  • Photoelectric Sensors: The Untapped Advantage for Tool and Die Stamping
    Adding sensors to their machines can help North American tool and die stampers increase product quality and gain a competitive edge.
  • Infrared Thermography for Remote Condition Monitoring and Control
    Optical surveillance systems can work the night shift too, with the addition of IR cameras. This Web-enabled system watches for intruders and other anomalies and either notifies the appropriate personnel or decides on its own what action to take.

  • Application Snapshots
    Adding smarts to roller grills, keeping cruise ships sailing along, and recreating the Wright Flyer.

    Intelligent Systems:
  • Web-Enabled Communication Applications for Remote Access and Equipment Monitoring
    What goes into making something Web enabled? Here's an overview of the necessary software and hardware elements to get connected.
  • 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.
  • Introducing a New Programmable Signal Amplifier
    This amplifier's simple, selectable programming routines and easy interface options can keep your sensor elements from drifting off calibration.


    Departments
      Business Sense
      Research & Developments
      Web Picks
      Wish List
      Advertiser Index


  • March 2004
  • Guest Editorial: Watch the Auto Industry

    Putting Sensors to Work:
  • Same Data, More Value: Multivariate Sensor Signal Monitoring
    Adding more sensors to your equipment can, by itself, provide good value. Adding multivariate anaylsis of the sensor data returns an even greater benefit-earlier warning of equipment faults.

  • Application Snapshots
    Robotic disc-flippers, automated cow care, and behind-the-scenes rocket science.

    Intelligent Systems:
  • Web-Enabled Vehicle Data Acquisition with Remote Real-Time Access
    An integration of data acquisition, GPS, and the Internet allows automotive engineers working together-in various parts of the world-to conduct real-time road tests and adjust test parameters on the fly.
  • Power Considerations for Wireless Sensor Networks
    Two ways to power remote, portable devices are tiny long-life batteries and energy harvesting techniques. The choice depends on the demands of the particular application.
  • Battery Power for Remote Wireless Sensors
    Hybrid lithium batteries are a reliable way to power sensors that require high current pulses to transmit their data.

    Sensor Technology and Design:
  • Next-Generation Proximity and Position Sensors
    A new proximity sensor uses an RF field to sense near-field proximity with high precision.
  • 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.


    Departments
      Business Sense
      Research & Developments
      Web Picks
      Wish List
      Advertiser Index


  • February 2004
  • Guest Editorial: MEMS Progress and Its Impact

    Putting Sensors to Work:
  • 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.

  • Application Snapshots
    RFID baggage tracking for airports, keeping colors consistent in commercial printing, and using robots to automate packaging processes.

    Intelligent Systems:
  • Bridging the Gap: Extending Bluetooth to Ultra-Low-Powered Equipment
    A new wireless technology extends Bluetooth networks where both ultra-low-power operation and long range are essential.
  • 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.

    Sensor Technology and Design:
  • A New Densitometer Based on MEMS Silicon Microtube Technology
    A novel fluid density meter incorporating silicon microtubes represents the first major breakthrough in densitometer technology in more than 35 years.
  • The Principles of Piezoelectric Accelerometers
    Read this and you will learn how quartz accelerometers work and how to power and instrument them.


    Departments
      Business Sense
      Research & Developments
      Web Picks
      Wish List
      Advertiser Index


  • January 2004
  • Editorial: A Reflective Look

    Sensors is 20!
  • Celebrate With Us
  • A (Mighty) Brief History of Sensors
  • Take a stab at recreating Sensors' original 1984 mission statement-with a twist.

    Putting Sensors to Work:
  • 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.

  • Application Snapshots
    Smart sprinkling for greener pastures, high-schoolers weathering the tropics, and snuffing fire in fighting vehicles.

    Intelligent Systems:
  • Secure Low-Power Operation of Wireless Sensor Networks
    How the IEEE 802.15.4 standard balances security and low-power operation in wireless sensor networks.
  • Industrial Automation Networking: 2004 and Beyond
    Trying to plan ahead? Read our survey of the current industrial networking landscape, and learn which protocols are dominant now and which ones to keep an eye on in the future.

    Sensor Technology and Design:
  • Digital Temperature Sensors: Help for Hot Boards
    Circuit designers need to keep temperature excursions to a minimum on increasingly hot, crowded boards. Integral digital temperature sensors and some control circuitry can do the trick.
  • Choosing the Right Pressure Sensor for Your OEM Application
    Finding the ideal pressure sensor is a juggling act. The balls include technology, accuracy, and reliability.


    Departments
      Business Sense
      Research & Developments
      Web Picks
      Wish List
      Advertiser Index



  •  
    E-NEWSLETTERS
    SUBSCRIBE NOW!
    Sensors Weekly
      What's New
      Product Picks





    Questex Media
    Home | Contact Us | Advertise
    © 2011 Questex Media Group, Inc.. All rights reserved.
    Reproduction in whole or in part is prohibited.
    Please send any technical comments or questions to our webmaster.