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Sensors

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Carolyn Mathas
Editor
This site that gives a sense of what’s happening in the world of sensor technology and helps designers to stay current with new trends, good technological ideas, novel materials, and products. Optimum and robust design ideas combined with innovative techniques showing how-to-interface and condition sensor outputs are some of the areas explored. Mathematical aspects of sensor accuracy, temperature, and linearization tracking and correction are some of the many and varied areas to be explored.
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One accelerometer interrupt pin for both wakeup and non-motion detection

This paper describes the method of using one accelerometer interrupt pin for both wakeup and non-motion detection to automatically switch on and off the screen. The microprocessor only needs to monitor the edge transition of the accelerometer interrupt output pin without the need for reading the interrupt source register. The sample code for accelerometer configurations is included. Read More...

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Quantum Tunneling Composites—Cutting cost, size and weight up to 90%—Part I

Here is a multi-segment paper courtesy of the Institute of Physics on the new quantum tunneling composites (QTC), covering the mechanism of how QTC materials operate. QTC sensors and switches are expected to become mainstream, and the HMI technology of choice, as QTC enables the cost, size and weight of switches to be cut by as much as 90%. Read More...

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Wireless plus medical implants—The answer to antibiotic resistance?

Amazing work is being done by John Rogers and his team at the University of Illinois at Urbana-Champaign. They’ve created remote controlled electronic implants, bio-absorbable electronic circuits, that are designed to attack microbes, provide pain relieve, stimulate bone growth, and then disappear. Read More...

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Kinect sensor for Windows to launch in 2014

So, from the sound of it, the key is heightened performance no matter the environment—doing what’s available now one (or two) better. Read More...

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Solderable flip-chip Schottky diode targets high-frequency sensor apps

The MADS-001317-1500 broadband Flip-chip Schottky Diode provides a low-cost and versatile ultra-small Schottky solution for police radar, point-to-point, electronic warfare, and aerospace and defense applications. Read More...

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Explosion-proof pressure transducer with zero-function capability

The AST46DS explosion-proof pressure transducer with display is price-competitive and features zero function capability, voltage or 4-20mA output signals, and 316L stainless steel sensor materials. Read More...

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Xtrinsic intelligent sensor hub adds programmability and precision

The Xtrinsic intelligent sensor hub by Freescale serves as a highly advanced sensor fusion platform that targets the burgeoning number of motion sensors found in mobile handsets and tablets. Read More...

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High-powered temperature controller for 15 Amps and up

A high-powered temperature controller by Oven Industries is mounted on a heat sink to create a seamless transition between heating and cooling devices. Read More...

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A middleware link to an energy harvesting wireless world

Middleware that transforms telegrams into ready-to-use data and eases the integration of energy harvesting wireless technology into a wide range of applications and networks is now a reality. The result—deeply connected systems. Read More...

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Mechanical Buttons to capacitive sensing—A step-by-step guide—Part IV

In Part III of this series, we learned how MBR devices solve certain problems and what benefits MBR devices offer. In this fourth and final part, we’ll look at some of the tools that aid the design of a system with MBR devices. Read More...

>> SEE ALL
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Bender senses shocks

With the aid of a simple mounting system and some soldered-on weights, a piezoelectric “bender” can detect mechanical shocks. Read More...

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Photo meter assesses ambient light

When most PN-junction diodes are reverse biased, they will produce a small photovoltaic output as the light level is increased. Read More...

Circuit synchronizes sensors and cameras

Trigger circuits provide measurements and images at the right time. Read More...

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Linearize optical distance sensors with a voltage-to-frequency converter

Create the mathematical inverse of an analog voltage by converting it to frequency and measuring the period. Read More...

Fabricate a high-resolution sensor-to-USB interface

A precision analog acquisition system fits in your pocket. Read More...

Current monitor uses Hall sensor

Use a Hall-effect sensor to measure dc current in the range of 0 to 40A. Read More...

A better approach to designing an RTD interface with a spreadsheet

An improved Design Idea directly calculates component values for an RTD circuit using an Excel spreadsheet. Read More...

GMR sensors manage batteries

The past few decades have seen remarkable progress in magnetic-sensor technology. Early and current sensors exploit the Hall effect; more recent devices use an effect called giant magnetoresistance (GMR). GMR sensors use semiconductor processing of materials such as indium-antimony. The GMR sensor in Figure 1 comprises four GMR resistors in a Wheatstone-bridge configuration. Read More...

>> SEE ALL
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Solderable flip-chip Schottky diode targets high-frequency sensor apps

The MADS-001317-1500 broadband Flip-chip Schottky Diode provides a low-cost and versatile ultra-small Schottky solution for police radar, point-to-point, electronic warfare, and aerospace and defense applications. Read More...

image

Explosion-proof pressure transducer with zero-function capability

The AST46DS explosion-proof pressure transducer with display is price-competitive and features zero function capability, voltage or 4-20mA output signals, and 316L stainless steel sensor materials. Read More...

image

Xtrinsic intelligent sensor hub adds programmability and precision

The Xtrinsic intelligent sensor hub by Freescale serves as a highly advanced sensor fusion platform that targets the burgeoning number of motion sensors found in mobile handsets and tablets. Read More...

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High-powered temperature controller for 15 Amps and up

A high-powered temperature controller by Oven Industries is mounted on a heat sink to create a seamless transition between heating and cooling devices. Read More...

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MR Series replaces magnetostrictive cylinder position sensors

The MR Series of linear position sensors is designed to be a drop-in form, fit and function replacement for magnetostrictive sensors, while featuring a more robust construction and lower cost of ownership. Read More...

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Ultra-sensitive sensors respond through steel or glass

An ultra-sensitive sensor design by Peratech uses the company’s Quantum Tunneling Composite (QTC) technology so that when mounted behind a 0.1mm stainless steel or 0.5mm glass sheet, it still detects the pressure of a finger. Read More...

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Thermometer measures temperature without contact

The Melexis infrared thermometer makes it safe to measure the surface temperatures of hot, hazardous, or hard-to-reach objects without having to physically touch them. Read More...

Christmas toys: Paper Jamz guitar relies on printed electrodes and connectors

Pry inside a toy electronic guitar that provides a surprisingly good approximation of an electric guitar. Read More...

>> SEE ALL
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Quantum Tunneling Composites—Cutting cost, size and weight up to 90%—Part I

Here is a multi-segment paper courtesy of the Institute of Physics on the new quantum tunneling composites (QTC), covering the mechanism of how QTC materials operate. QTC sensors and switches are expected to become mainstream, and the HMI technology of choice, as QTC enables the cost, size and weight of switches to be cut by as much as 90%. Read More...

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NASA interview with Terry Fong: Intelligent Robotics Group

So, I found out recently that “number 5 IS alive!”, except in the new millennium, it’s K10! Read More...

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Extracting M2M vehicle data

With the rise in use of M2M technology, vehicle OEMs are now looking into how the valuable data produced from in-car electronics can be gathered in real time and used to provide additional services. Read More...

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Cryptography and Network Security—The basics—Part II

This book focuses on two broad areas: cryptographic algorithms and protocols, which have a broad range of applications; and network and Internet security, which rely heavily on cryptographic techniques. Read More...

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Sub-microsecond interconnects for processor connectivity—The opportunity

This article focuses, not on the raw bandwidths of the interconnect technologies, but rather on the inherent protocol capabilities, supported topologies and latency design targets for each of these interconnects. Read More...

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DO-254 Requirements Traceability

This paper explains the rationale behind requirements traceability including its purpose and resulting benefits when done correctly. Read More...

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How a standard is born: IEEE P1901.2 for narrowband OFDM PLC

This article gives a brief history of how the IEEE Communications Society sponsored the IEEE P1901.21 work group and developed a complete narrowband powerline communication standard. The article summaries the structure of an LF NB OFDM PLC spec and provides specific real-life test data. Read More...

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Slideshow: How NASA uses LEDs

Covering LEDs on this site led me to look at how the folks at NASA are using LEDs. From medical, photographs from Rovers, to growing plants, and more. I’ve put together some of the uses in this slideshow. Read More...

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A middleware link to an energy harvesting wireless world

Middleware that transforms telegrams into ready-to-use data and eases the integration of energy harvesting wireless technology into a wide range of applications and networks is now a reality. The result—deeply connected systems. Read More...

image

Mechanical Buttons to capacitive sensing—A step-by-step guide—Part IV

In Part III of this series, we learned how MBR devices solve certain problems and what benefits MBR devices offer. In this fourth and final part, we’ll look at some of the tools that aid the design of a system with MBR devices. Read More...

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Mechanical Buttons to capacitive sensing—A step-by-step guide—Part III

In Part 3 of this 4-part series, we’ll explore how to overcome the challenges faced in migrating from mechanical buttons to capacitive sensing buttons, what a mechanical button replacement (MBR) device is, and the problems and value add associated with MBR devices. Read More...

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Using adaptive filtering to enhance capacitive sensing of buttons/sliders

Capacitive touch interfaces have become increasingly popular for button and slider interfaces used for input control. The performance of a slider or button under changing environmental conditions is important for final implementation and can vary based on the use case. Read More...

>> SEE ALL
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