Potentially huge power saving opportunities in theSmart Energy, Building and Home Automation profiles:
Some Data Points just for Household Electric Use alone, and these figures from 2001 Data ...
Heating, ventilation, and cooling (HVAC) accounted for 356 billion kWh, 31 percent of the electricity consumed by U.S. households in 2001.
Electric space heating accounted for an additional 116 billion kWh (10 percent of the total), which is considerable given that, nationwide, space heating was predominantly fueled by natural gas. In almost 31 million households, electricity was the source of energy for the main heating system. In an additional 13 million households, it was used in secondary heating equipment, such as portable heaters and built-in electric units.
Electric water heating accounted for over 100 billion kWh (9 percent) in 2001. Of the total of 107 million households, 41 million used electricity as their water heating fuel, ...
FROM - US HOUSELHOLD ELECTRICITY REPORT:
LINK -->> http://www.eia.gov/emeu/reps/enduse/er01_us.html
Thanks all for your great feedback!!! Tune in tomorrow for a look "under the hood" as to what happens inside a profile to make it work. Again, I am available for training and consulting - web site is not quite "ready for prime time" but you can reach me at c.j.lord at ieee.org. Have a great Wednesday!!!
PAN ID is THE network ID - MAC addresses are used only for formation and get replaced with short addresses. This is much like USB where a unique VID, PID, and port are assigned a device number. This is done by the PAN Coordinator at network formation, or at association if the node joins an established network
Excellent question about setting power - in fact, you can turn the xmitter power DOWN to lower power consumption! I have done that to tweak that last year or two of battery life. You can increase power from the nominal 0dBm to the full legal limit (there are modules that do that off the shelf!) but not generally supported in ZigBee. There are 802.15.4 networks in the SW US controlling irrigation systems over miles!
ZigBee is hard for a small company to integrate as official, certified ZigBee. Very possible, and required in many areas (Building automation, smart grid, medical for example). For many cases, if it is all your proprietary network and is not under regulatory control (other than FCC of course), you may want to roll your own. over 80% of my designs fit this latter mold.
My current last slide for Friday sums up the confusion about a lot of the "ZigBee-like" modules out there. And there are a BUNCH. They are almost - not quite - ZigBee. All different. And don't follow what I have been talking about completely.
RFID is a separate technology that uses MUCH lower frequencies (as low as 14Mhz) typically with a fully passive transponder that is RF powered. Rather than integrate the two (which I see happening also), the initial draft of the retail profile used ZigBee for that function. I think you will see them integrate.
The main reason for using ZigBee telecom profile over BT is power consumption. Phones, particularly large display units, have a challenge with battery life. BT is a power hog, although BTLE is better. My opinion is that ZigBee telecom may or may not see the light of day... but I am often wrong
I have a specific question about Did's XB modules, if you are familiar with them. We use them to talk from one remote control to one elevator, but with the Digi software, we configure them both to "End Device" and not "Coordinator". The other day you were saying that every network needed a coordinator. So maybe that term doesn't mean the same thing when programming an XB device? Or maybe the XB modules are deciding that without us knowing about it? Just curious if you are the guy to ask about that. Thanks!
Are there any open source stacks for non-commercial applications? If so, can you provide any recommendations or opinions on which ones to avoid and which ones to try?
Some notes for today, NOT on slides: Every packet in 802.15.4 and ZigBee contain specific identifying data: 15.4: - The node that sent the packet - The node that receives the packet - The PAN ID ZigBee: - The Profile ID - The endpoint in the node that receives the data - The code for the function, command, or response - Any data associated with that function or command
@Rob I have a similar problem with IE and my alternate browsers do not play right away when I press the play button, for example my chrome just started playing the presentation from the beginning right now from the beggining of the session I can move the slider to get the most up to data audio
Some notes for today, NOT on slides: Every packet in 802.15.4 and ZigBee contain specific identifying data: 15.4: - The node that sent the packet - The node that receives the packet - The PAN ID ZigBee: - The Profile ID - The endpoint in the node that receives the data - The code for the function, command, or response - Any data associated with that function or command
Please tell me how to connect to your audio site. I looked all over but do not see the audio port that I can click to connect like the first 2 days. Thank you.
-The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams. If when the show starts you don't hear any audio, try refreshing your browser.
Good Day all!! I look forward to our class today! The slides did not change, so you can download the slides from the link above if you have not already done so. Thanks!!!
@Locaits - The audio stopping problem can be fix by pulsing the audio player (clicking the audio pulse button) for 5 - 10 seconds (thereby creating some audio buffering), and then clicking the play button again.
It was mentioned yesterday that the slides for the rest of the week might need to be updated. If we downloaded today, do we have the most recent slide deck?
A new battery design, which replaces lithium with abundant and low-cost elemental sulfur, is still in its nascent stages but shows real promise for giving batteries more energy potential.
PTC will offer a virtual desktop environment for its Creo product design applications, potentially freeing engineers to run them from remote desktops on a variety of operating systems and mobile devices.
The push to achieving more intelligent, integrated manufacturing is putting a strong focus on networking and connectivity as key enabling technologies.
Now that solar and wind harvesting technologies are a thriving market, researchers are seeking other environmentally related energy sources for which they can create harvesting devices.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 5
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.
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