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
A small team of engineers has created a tackling dummy robot that's comparable to training with human players on the football field.
Several plastics and elastomers have come out recently for different parts of cars, as well as for multi-material medical devices and for onboard base station antenna components.
Work in embedding conductive materials into commercially available yarn could lead to energy textiles that store power for use.
A ball bearing developed for turbofan engines by FAG Aerospace of Germany and MTU Aero Engines could have other uses such as turbines, pumps, and gearbox stages.
Fifty-six-year-old Pasquale Russo has been doing metalwork for more than 30 years in a tiny southern Italy village. Many craftsmen like him brought with them fabrication skills when they came from the Old World to America.
More:Blogs|News
Design News Webinar Series
8/13/2015 11:00 a.m. California / 2:00 p.m. New York
6/25/2015 11:00 a.m. California / 2:00 p.m. New York
6/24/2015 11:00 a.m. California / 2:00 p.m. New York
9/10/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 31 - Sep4, Embedded System Design Techniques™ - Writing Portable and Robust Firmware in C
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


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 Course August 25-27:
Sponsored by MICROMO
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service