HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Jon Titus
User Rank
Blogger
Software helps provide a good start
Jon Titus   4/2/2012 12:01:24 PM
NO RATINGS
Because semiconductor manufacturers make complicated devices and want designers to use them, they create development tools and provide source code that illustrates how to use these devices. I'd say almost all MCU and programmable-sensor companies offer hardware and software to help engineers and product designers get off to a good start. In most cases, open-source code provides a way to start with a core of working software. Of course, the code might run optimally only on the MCU-maker's chips.

Battar
User Rank
Platinum
Placement
Battar   4/1/2012 2:31:34 AM
NO RATINGS
Rotating the chip itself in relation to hard/soft iron can dramatically improve performance. We have a design which uses a compass in close proximity to a brushless motor. It isn't intended to provide a true heading, but does monitor rotation.

williamlweaver
User Rank
Platinum
Re: New Sensors
williamlweaver   3/30/2012 8:22:34 AM
NO RATINGS
Thanks for this @Jon. With the increased availability of compact, integrated sensors and low-power computing, I expect the boom into "sensor fusion" is just starting. I'm delighted to read that Freescale did all of the difficult calibration analysis and created an on-board algorithm. The application note you linked even includes the source code for the calibration algorithm they developed. Kudos to Freescale for making their code open so it can be reviewed, modified, improved, and adapted by the sensor community. I hope they can be an example for other instrumentation manufacturers. 

JimT@Future-Product-Innovations
User Rank
Blogger
Re: New Sensors
JimT@Future-Product-Innovations   3/30/2012 1:21:10 AM
NO RATINGS

One recent contract design I did for a military contract placed an Ecompass on the main board of a portable GPS device.  True, that multiple subsequent GPS fixes will provide a compass heading, the need was for a foot soldier who may be hunkered down in a foxhole, and needed direction.  From the designer's perspective, many things can affect the Ecompass performance as Jon pointed out:  shields, capacitors, and any Fe based components. 

But two surprises were the screws and the Stainless steel shields. First, the screws were expected to wreak havoc with the Ecompass, but careful placement of the SMD to be equidistant between two screws proved sufficient .  Test readings  still came thru perfectly. 

The second surprise was the SS shields, and we went to great lengths to requalify new, NiAg  shields as engineered replacements.  Halfway into the effort to requalify  NiAg, one of the techs put a white-board magnet on the rev 1 stainless steel shield being phased out.   It didn't stick.  Foolishly, I took for granted without actually checking the metallurgical properties of the grade of SS shields, that they in fact did not possess any iron and did not affect the Ecompass performance any differently that the newer Nickel Silver shields.  Didn't do my homework and it resulted in a lot of extra work for no reason.

naperlou
User Rank
Blogger
New Sensors
naperlou   3/29/2012 9:28:25 AM
NO RATINGS
Jon, these new sensors make it much easier to include new functionality in a device.  I have been impressed with the Xtrinsic series since I first worked with it.  Good article.



Partner Zone
Latest Analysis
Self-driving vehicle technology could grow rapidly over the next two decades, with nearly 95 million “autonomous-capable” cars being sold annually around the world by 2035, a new study predicts.
MIT’s Senseable City Lab recently announced the program’s next big project: “Local Warming.” The concept involves saving on energy by heating the occupants within a room, not the room itself.
The fun factor continues to draw developers to Linux. This open-source system continues to succeed in the market and in the hearts and minds of developers. Design News will delve into this territory with next week's Continuing Education Class titled, “Introduction to Linux Device Drivers.”
Dean Kamen tells an audience at MD&M East 2014 how his team created the DEKA Arm to meet DARPA's challenge to design a better prosthetic arm for wounded veterans.
The new draw-it-on-a-napkin is the CAD program. As CAD programs become more ubiquitous and easier to use, they have replaced 2D sketching for early concepting.
More:Blogs|News
Design News Webinar Series
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
5/13/2014 10:00 a.m. California / 1:00 p.m. New York / 6:00 p.m. London
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 4 - 8, Introduction to Linux Device Drivers
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: August 12 - 14
Sponsored by igus
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service