A Novel Auto-Zero Servo-Inclinometer
A next-generation servo-inclinometer exhibits accuracy of a few arc-seconds, has virtually banished the zero drift problem (even under harsh conditions), and can go without recalibration for extended periods of time.
A Unique Angular-Rate-Sensing Gyro
Using specialized MEMS technology, integrated gyroscopes deliver significant advances in angular rate sensing-and make a fully integrated inertial measurement unit with six degrees of freedom a real possibility in the not-so-distant future.
TechWOW! Special Supplement
An out-of-the-ordinary supplement premiering with the September 2003 issue of Sensors. It features innovations and surprising applications of sensors, systems, and related technologies, covering such areas as: automotive, medicine and biotech, consumer and home, and safety and security.
Detecting Out-of-Balance Conditions with MEMS Technology
A vigorous spin cycle in your washing machine makes less work for the dryer, but high spin rates can shake your washer to pieces. To keep that from happening, this MEMS accelerometer detects off-balance load conditions and helps corrrect the problem.
Building an Engine Simulator for ECU Testing
Challenged to develop an engine simulator for hardware-in-the-loop testing of engine controller modules, engineers turned to FPGA-based reconfigurable I/O boards, enabling real-time simulation with precise, flexible timing and synchronization of I/O signals.
Tunable Lasers for Multichannel Fiber-Optic Sensors
Tunable lasers, highly manufacturable and cost-effective, are opening new opportunities for multichannel fiber Bragg grating sensors using single-fiber and single-laser technology in multiple-point interrogation systems.
Editorial: What's Yours?
Are you clear about who has rights to your designs?
Putting Sensors to Work:
Pressure Sensors Help Control Your Networked HVAC/R System
The days of just checking the temperature output of HVAC/R units are past. Pressure transducers have become an integral element of control systems designed to reduce energy consumption, improve system performance, and facilitate preventive maintenance programs.
A printer cartridge understudy; how to measure a cloud; and a facial fever giveaway.
Securing Your Process Control Networks
Interconnecting business networks with modern process networks has opened the door for hackers and viruses to enter the production environment. If left untended, this doorway can lead to failure of process networks of unauthorized modification of the production systems that are attached to them.
Tire Pressure Monitoring: An Industry Under Pressure
Federal insistence that auto manufacturers warn drivers of low tire pressure means a booming market in tire pressure monitoring systems-and efficient, flexible systems that directly monitor each tire will likely be the big winners.
Keeping the snap in snap beans; pumping iron without hurting yourself; and a virtual hand on the wheel.
Meet the ZigBee Standard
Many in the industry are calling for a wireless networking standard that can deliver device-level communications for sensing, data acquisition, and control applications. Will the ZigBee standard make this a reality?
Calibrating Weight Sensors Using a Dead-Weight Test Stand
Clever electronics can maintain your force sensor's calibration but they're wasted if the sensor isn't properly calibrated in the first place. Here are some practical tips and techniques for using a dead-weight test stand properly.
Genetic Analysis Leaves the Lab
Wider access to the enormous amount of information contained in DNA and RNA molecules will revolutionize drug discovery, disease diagnostics and control, and medical treatment.
A Novel Robotic Workcell Makes High-End MEMS Devices
A multitalented robot is performing spin coating, baking, and all the transfer steps of substrates that go into a quartz rate sensor MEMS gyro. The advantages are lower manufacturing costs, higher throughput and yield, and enhanced process flow.
Machine Condition Monitoring, Part 1: Vibration Acquisition and Analysis
Early machine monitoring systems simply determined the need for maintenance, but modern systems assist with severity assessment, avoid false positives, and help with process optimization. Here's a look at one enabling technology for these new systems-dynamic vibration measurement and analysis.
Automating HVAC systems with wireless mesh networks, making keystone adjustments on projectors, and measuring distance at driving ranges.
Designing Sensor Signal Conditioning with Programmable Analog ICs
A new breed of programmable analog ICs is bringing greater design flexibility to sensor signal conditioning applications, allowing manufacturers to differentiate products while slashing parts inventory by using a single chip and board layout for multiple applications.
Dynamic Pressure Calibration
High-frequency pressure sensors capable of measuring shock waves, blast, rocket combustion instability, and ballistics were initially developed by researchers for laboratory use. Here's an overview of some of the sensor types, and associated calibration equipment, available on the commercial market.
PIR Detectors for Security
Day or night, PIR devices detect motion by sensing any thermal contrast between a moving object or person and a stationary background. As a result, they're being incorporated into a growing number of security devices.
High-Resolution, Chip-Size Magnetic Sensor Arrays
You may have heard of the technique before, but the materials and applications are new. Now you can manufacture arrays that measure small magnetic fields or changes in magnetic fields. And you can use the signal conditioning and logic of integrated circuits to optimize system performance.
Extend the Life of Your Battery
It's the age of wireless transducers and handheld instruments. Now everyone wants to know where they're going to get the juice to operate these devices. Keeping your batteries alive and well is one way of doing it. Use the right charging methods, and you can extend battery cycle life.
An Overview of MEMS Inertial Sensing Technology
MEMS-scale accelerometers, geophones, and gyros-thanks to their small size and weight, modest power consumption and cost, and high reliability-are replacing some of their standard-size precursors as well as establishing new markets of their own.
Low-Pass Filtering for Vibration Sensors
Vibratory signals can reveal a great deal about a machine's health, but not when extraneous noise corrupts the data. Adding the right filter to your accelerometer can clean that signal right up.
Wireless Mesh Networks
Providing industrial-strength connectivity, this technology delivers self-configuring, scalable, and self-healing networks. And it's aimed right at distributed data acquisition and control.
Putting Sensors to Work:
Circuit Protection for Automotive Networks
As electronic entertainment and information devices migrate from the home to the vehicle, automotive multimedia networks and supporting electrical and electronic systems must be protected against overcurrent and overtemperature damage. Resettable PPTC devices help provide the circuit protection that's needed.
Dynamometer systems that test diesel engines; software to keep locomotives on track; and earth-moving electro-optical encoders.
Pressure Measurement: Principles and Practice
Do you find the sheer variety of pressure sensing methods and products daunting? This tutorial will help you take the pressure off yourself and put it on the right sensor for your application.