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Emerging embedded systems: sensor-rich designs are part of the newest innovations

July 10, 2008

This week’s cover story touches on how designers are adding more sensors to their designs and how this is enabling them to build systems that would cost more to implement or use more power to operate if they did not use those extra sensors. In other words, the cost of taking on the additional design-time complexity of working with more sensors is being increasingly being offset by the savings in design complexity or operational costs. I like the phrase "emerging embedded systems" that I heard from Gene Frantz, Principal Technical Fellow at Texas Instruments  in a recent conversation to describe a larger trend that includes sensor-rich designs.

When I started working on this article, I thought it would be easy to line up examples to include in the article mostly because I worked on projects that were doing these kinds of things nearly 20 years ago. In one case, we purposely made the camera system move around to make it easier to distinguish undesirable sensor characteristics from potential data. It involved correlating a measured motion vector with the vision data to simplify movement prediction and verification of what we were trying to identify in the field of view. Unfortunately, I cannot share much more than that.

What I discovered while working on this article was that while more design teams are implementing increasingly richer sensor designs, they are not necessarily able to share the details of those designs because they represent important proprietary information – it’s their secret sauce so to speak. As a compromise, I tried to illustrate the concept with high-level examples of where sensor-rich designs are permeating across many applications including cost-sensitive consumer electronics.

Rishi Vasuki, DSC product marketing manager at Microchip, realized after some sourcing conversations for this article that we did not have a framework that laid out the various contexts that sensor-rich designs have to address. Rishi has written an article that proposes an embedded-sensor processing framework, and that article has gone live in conjunction with this week’s cover story as a complementary online story. While there has been some internal discussion on the framework, this is its first public presentation and you are encouraged to weigh in and contribute your thoughts about it by posting a response in this blog posting.

Posted by Robert Cravotta on July 10, 2008 | Comments (3)

March 4, 2009
In response to: Emerging embedded systems: sensor-rich designs are part of the newest innovations
SBL Embedded Systems commented:

Really a reader's Choice Regards SBL Software Development www.sblsoftware.com/embedded-prog.aspx


July 24, 2008
In response to: Emerging embedded systems: sensor-rich designs are part of the newest innovations
Kim Fowler commented:

The four-stage sensor framework proposed by Rishi Vasuki is a fine start. I wonder, however, if the transducer should stand alone as a first box with a separate box following the transducer box for signal conditioning - making six boxes in all? Both new boxes, transducer and signal conditioning, would precede the Data Acquisition box in Vasuki''s scheme. The reason for elaborating on his scheme is that transducers are unique entities, aside from all the processing that follows, and each has unique physical properties. Furthermore, transducers require a variety of different external stimuli that signal conditioning provides, as well as level shifting and modulation. I recognize that six boxes may seem too fine a distinction, or even clumsy but a six-stage architecture would more accurately represent how sensors are evolving today. This proposed sensor framework merits further discussion. I am sure that the IEEE Instrumentation & Measurement Society and rhw IEEE Sensors Council and possibly others would be interested in contributing to such a discussion. Regards, Mr. Kim Fowler Executive Vice President, IEEE Instrumentation & Measurement Society


July 11, 2008
In response to: Emerging embedded systems: sensor-rich designs are part of the newest innovations
Gene Frantz commented:

Robert, I'm glad we resonated on the emerging embedded system. Since the trend began, I've been intrigued by the way "embedded processor" had been losing its crisp definition - or should I say it has gained multiple definitions. What I think you and I concluded is that part of this class of "hidden" computers is beginning to emerge. More and more, we are finding these "embedded processors" are the center of products that are becoming user programmable (or is that configurable or individualizable?). I'll also take this opportunity to point readers to a blog I have been writing (www.blogs.ti.com) which looks at this emerging embedded processor trend from the end equipment in. As we discussed in our conversation, finally we can tell people what we did with an embedded processor and actually have them appreciate it. Yes, you can now touch and feel (and see) an embedded processor at work. Gene PS, I had an interesting conversation with a professor friend on mine (Jan Rabaey) this evening. We started talking about the emerging embedded processor concept. He suggested it could be better to call it the "immersive processor" market. What are some other descriptors of this emerging processor market?

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