Class II Division 2 Occupancy Sensors James Fisher Michael Gazda Russell Gee JoAnne Hitchcock Gledi...
-
Upload
samson-reynolds -
Category
Documents
-
view
217 -
download
1
Transcript of Class II Division 2 Occupancy Sensors James Fisher Michael Gazda Russell Gee JoAnne Hitchcock Gledi...
Class II Division 2 Occupancy Sensors
James FisherMichael Gazda
Russell GeeJoAnne HitchcockGledi Progonati
Christopher Zannoni
Presented on October 15, 2012 by:
ECE Senior Design 2012-2013
Team Members
• Chris Zannoni (ECE, CompE)
• Gledi Progonati (ECE)
• JoAnne Hitchcock (ECE)
• Russell Gee (Eng Phys)
• James Fisher (ME)
• Michael Gazda (ME)
• Dr. George Lykotrafitis (ME)
• Dr. Sung Yeul Park (ECE)
• Sponsered By Sensor Switch
Advisors
ECE Senior Design 2012-2013
Agenda1. Occupancy Sensor Technology
2. Hazardous Environment Classification
3. Design Considerations
4. Budget
5. Timeline
ECE Senior Design 2012-2013
Occupancy Sensor Technology• PIR-Passive Infrared
• Cannot "see" through materials, including glass
• Multiple individual beams look at the area • Two (or more) consecutive beams detect a
difference in temperature
• Signal sent to indicate occupancy
• Microphonics• Microphones pick up sound to indicate
continued occupancy without movement
ECE Senior Design 2012-2013
Occupancy Sensor Technology
Relay andPower Supply for Sensor
Sensor
Luminaire
Line Voltage
Sensor Power(Low Voltage<200 mW)
Control Signal
Manual Switch
ECE Senior Design 2012-2013
Why use Occupancy Sensors?
Energy Savings Electricity Bill Savings Convenience
ECE Senior Design 2012-2013
Hazardous EnvironmentsI II
1Gas frequently
presentDust frequently
present
2Gas present abnormally
Dust present abnormally
ClassDiv
ECE Senior Design 2012-2013
Groups of Hazardous DustsGroup E: Metal dusts (conductive, and explosive) (resistivity <100 kΩ/cm)
Aluminum Calcium Silicide Titanium
ECE Senior Design 2012-2013
Groups of Hazardous Dusts Group F: Carbon dusts (some are conductive, and all are explosive) (100 kΩ/cm <
resistivity <100 MΩ/cm)
Carbon Black Charcoal (Activated) Asphalt
ECE Senior Design 2012-2013
Groups of Hazardous DustsGroup G: Flour, starch, grain, combustible plastic or chemical dust (explosive)
(resistivity >100 kΩ/cm)
Flour Grain (Dust Cloud) Cinnamon
ECE Senior Design 2012-2013
•Intrinsic Safety limits energy in device, removing possibility of ignition•Cheap•Lower installation cost•Universally accepted
•What makes a circuit intrinsically safe?
Design Restrictions: Inherent Safety
ECE Senior Design 2012-2013
Intrinsic Safety•Composed of Simple apparatues
•Passive components that store no, or little energy• Ignition curves
•Temperature limitations•Energy limiting barrier (Zener Barrier)
ECE Senior Design 2012-2013
Electrical Barriers
Relay andPower Supply for Sensor
Sensor
Luminaire
Line Voltage
Manual Switch
Zener diode barrier
ECE Senior Design 2012-2013
o Dust ignition proof:o OSHA (Occupational Safety & Health Administration) standard
“The apparatus is enclosed in a manner that will exclude ignitable amounts of dusts and will not permit arcs, sparks or heat generated or liberated inside the enclosures to cause ignition of exterior dust accumulations on the enclosure or of atmospheric dust suspensions in the vicinity of the enclosure.” -(National Electric Code)
Enclosure Considerations
ECE Senior Design 2012-2013
20
o Enclosure material must meet certain requirements:• Corrosion Resistance• Wireless communication restriction due to
transmissibility of metals • Raceways/conduit must be made of metal or PVC and
must be sealed• Wires must be supported to eliminate tension in wire• Low heat transfer, thermal conductivity
• Crucial to prevent combustion• Dust layers/clouds can ignite due to heat transfer
from components enclosed in the box
Enclosure Considerations
ECE Senior Design 2012-2013
• List of Class II, Division 2 dusts with the lowest ignition temperatures
21
Class II Div. 2 Combustible Dusts Group Min. Ignition Temp.
(°C)
Sevin G 140
Ferbam G 150
Violet 200 Dye G 175
Soy Flour G 190
Sulfur G 220
Enclosure Considerations
ECE Senior Design 2012-2013
Cost Considerations
o Cost (< $430-$1200 based on money saved in 3 years)• Cheapest material that meets requirements• Material with lowest production cost
• Injection mold plastics • Low installation cost
• Enclosure design should limit installation time • Reduce installation cost• Reduce overall cost of final product
• Low component cost
ECE Senior Design 2012-2013
Budget
• 3D printing
• Barriers (Phy,Elec.)
• Relays
• Communication Modules
• Connectors/Receptacles
• Production PCB's
• Testing ? (Could be large amount)
• Documentation (Manuals, Codes)
$9-11k for M.E. $1k for ECE
Barriers, $30
3D Printing; $75
Code Books; $170
PCB Printing; $75
Connectors, $10
Wireless Modules, $20 Relays, $2
ECE Senior Design 2012-2013
Please visit our website to follow the project and for more info(link on main ECE senior design page, Team 166)
References"Alma Aquaculture Research Station | University of Guelph." Alma Aquaculture Research Station | University of Guelph. University of Guelph,
2007. Web. 11 Oct. 2012. <http://www.aps.uoguelph.ca/aquacentre/aars/pictures.html>.
"Aluminium (Powder)." Pyro Aluminum (UK: Aluminium). N.p., n.d. Web. 11 Oct. 2012. <https://sites.google.com/site/playingwithfirememoirs/Playing-With-Fire/contents/essays/miracles-of-science/elements/pyro-aluminum-uk-aluminium>.
"Avoiding and Overcoming Installation Problems With Occupancy-Sensing Lighting Control Systems." Rensselaer Polytechnic Institute, 2 Dec. 2002. Web. 10 Oct. 2012. <http://www.lrc.rpi.edu/researchAreas/reducingBarriers/pdf/occupancySensorElecGuide.pdf>.
Bower, Lisa. "Baking with Different Types of Flour." Life123. N.p., 2012. Web. 11 Oct. 2012. <http://www.life123.com/food/baking/baking-tips/a-quick-guide-to-using-different-types-of-flour.shtml>.
"Carbon Black (N220, N660, N550)." Made-in-China.com. N.p., 2012. Web. 11 Oct. 2012. <http://www.made-in-china.com/showroom/x987456321/product-detailAqUELcrOXjWe/China-Carbon-Black-N220-N660-N550-.html>.
"Cinnamon Spice." Cinnamon-spice Has Very Unique Healing Abilities You Want to Be Aware Of! Natures Health Foods, n.d. Web. 11 Oct. 2012. <http://www.natures-health-foods.com/cinnamon-spice.html>.
"Ebay Targets India Growth." HSBC Global Connections, 2012. Web. 11 Oct. 2012. <http://globalconnections.hsbc.com/united-kingdom/en/news-insight/ebay-targets-india-growth>.
"Energy Efficiency | Outside the Box Construcion." Outside the Box Construction, 2010. Web. 13 Oct. 2012. <http://www.outsidetheboxconstruction.com/energyefficiency.html>.
"Exposure to Mold and Dust in Grain." Iowa State University Extension and Outreach. Iowa State University, 2012. Web. 11 Oct. 2012. <http://www.extension.iastate.edu/obrien/news/exposure-mold-and-dust-grain>.
"Ferro Alloys Product." Metal Alloys (India). N.p., n.d. Web. 11 Oct. 2012. <http://www.indiamart.com/metalalloys/ferro-alloys-product.html>.
"Hazardous (Classified) Locations." Hazardous (Classified) Locations. OSHA, May 1996. Web. 10 Oct. 2012. <http://www.osha.gov/doc/outreachtraining/htmlfiles/hazloc.html>.
"Houston Blogs: TheVote." : The Money Trail #GOP2012: Updated. ABC13, 15 Oct. 2011. Web. 13 Oct. 2012. <http://thevote.abc13.com/2011/10/the-money-trail-gop2012.html>.
ECE Senior Design 2012-2013
References"Intrinsic Safety "i" Type of Protection." Siemens, 2012. Web. 12 Oct. 2012. <https://moodle.dce.fel.cvut.cz/file.php/17/Manualy/expb1_e.pdf>.
"Light Guide: Occupant Sensors." Light Guide: Occupant Sensors. Inter.Light, 2012. Web. 10 Oct. 2012. <http://www.lightsearch.com/resources/lightguides/sensors.html>.
Lilly, Paul. "Amped Wireless AP20000G Wireless Router Promises Up to 7,500 Square Feet of Coverage." Maximum PC. N.p., 18 Sept. 2012. Web. 13 Oct. 2012. <http://www.maximumpc.com/tags/wifi>.
"Lutron MS-OPS2-WH Maestro 250 Watt Single Pole Occupancy Sensor Switch, White.“ Amazon, 2012. Web. 13 Oct. 2012. <http://www.amazon.com/Lutron-MS-OPS2-WH-Maestro-Single-Occupancy/dp/B005WM3ALC>.
"Maximize Your Energy Savings with a Quality Furnace." American Weathermakers, n.d. Web. 13 Oct. 2012. <http://www.americanweathermakers.com/2012/08/maximize-your-energy-savings-with-a-quality-furnace/>.
"Precious Metals: Titanium Jewelry." Precious Metals: Titanium Jewelry. All About Gemstones, 2012. Web. 11 Oct. 2012. <http://www.allaboutgemstones.com/metal_jewelry_titanium.html>.
"Sensor Switch." Sensor Switch. Acuity Brands, 2012. Web. 12 Oct. 2012. <http://www.sensorswitch.com/companyoverview.aspx>.
Stahl, R. "Innovative Global Explosion Protection." Automation Catalog 8000. R Stahl, 2012. Web. 26 Sept. 2012.
"What You Should Know about Coal Tar Sealant." Springfield News-Leader. Gannett, 6 Feb. 2010. Web. 11 Oct. 2012. <http://www.news-leader.com/article/20100207/NEWS01/2070371/What-you-should-know-about-coal-tar-sealant>.
ECE Senior Design 2012-2013