Freescale Merges Accelerometer and 32-Bit Micro into One Package

A tiny 3 x 3 x 1 mm package provides the home for a 3-axis accelerometer and a 32-bit microcontroller (MCU).  Part of an approach that Freescale Semiconductor calls its Xtrinsic sensing solutions, the MMA9550L addresses both the sensing and computing needs of the rapidly proliferating touch sensing applications.  As if this wasn’t enough, the package also holds a power management capability as well as I2C and SPI connectivity.

Since the MCU is the company’s well-established ColdFire MCU, software can be easily developed for Xtrinsic products using CodeWarrior tools. Internal algorithms simplify implementing freefall detection, tilt and 3D orientation detection, tap and double tap detection, dead reckoning, shock, vibration and sudden motion detection. Specific capabilities for targeted consumer applications include 14-bit resolution, low-noise and low-power consumption.

For more information about Freescale Semiconductor’s MMA9550L Xtrinsic sensing solution, click here.

Iris Recognition Sensor Gets a Speed Boost

Smart Sensors Limited, a spin-out from the University of Bath, UK, has
introduced version 2 of its MIRLIN software toolkit, enabling security system
developers to create iris recognition systems capable of 2 million matches per
second, four times faster than other current technologies. Functions include
image acquisition, enrollment, and verification or determination of identity
(ID) from human irises.

Analyzing a digital image of the iris using techniques similar to those employed
in video encoding, the Smart Sensors patented solution requires less processing
power than alternative methods and the software code can operate in only around
300 Kilobytes of memory on a silicon chip. As a result, systems can be based on
small, low-cost microcontrollers with less processing power than an ordinary
personal computer. This makes the technology suitable for use in fixed or
battery-operated, handheld equipment.

Smart Sensors` MIRLIN software development kits (SDK) enable systems to be
optimized for the best combination of speed and accuracy. Images can be scanned
in segments from 18 degrees to 0.72 degrees wide, depending on the accuracy
required. The technology works with iris characteristics that generally conform
to ISO/IEC standards but it is capable of delivering accurate results with
images that are significantly poorer than those defined by the standard.

The SDK can work with a variety of image sources, including several
manufacturers` iris cameras. Versions are available to support various
processors and operating systems. To make licensing more attractive for
customers, the company only charges a fee for each product or each server on a
network, not for every user or enrollment. Customers are supported through
service level agreements that provide bug fixes and product enhancements.

Smart Sensors, which is based in the SETsquared business incubator at the
University of Bath, has recently been awarded the Frost & Sullivan “Global Iris
Biometric Systems Technology Innovation of the Year Award” for 2009.

Smart Sensors Limited

IP 69K-rated Sensors for Harsh Washdown Environments

VeriSens smart vision sensors are equipped with IP 69K-rated stainless steel housings, shatterproof glass, special connectors and seals that protect the devices from damage in high temperature/high pressure washdown environments. 

The sensors are suitable for discrete automation applications in a range of industries, including food/beverage, pharmaceutical, medical and cosmetic processing. Using contour-based algorithms, VeriSens smart vision sensors provide edges that are more stable and reliable than those found using photometric (gray scale) methods. Using 656 x 494 pixel CCD imaging, the sensors calculate 2-D position correction and provide data on the position and angle of the target. They also perform simple measurement and location calculations. An RS485 interface communicates with a computer or control device to transmit and receive data. An Ethernet version is also available for real time remote image monitoring.  

Baumer Inc.
www.baumer.ca