Class II Division 2 Occupancy Sensors Presented on October 15, 2012 - - PowerPoint PPT Presentation

▶
class ii division 2 occupancy sensors
SMART_READER_LITE
LIVE PREVIEW

Class II Division 2 Occupancy Sensors Presented on October 15, 2012 - - PowerPoint PPT Presentation

Oct 16, 2022 138 likes •428 views

Class II Division 2 Occupancy Sensors Presented on October 15, 2012 by: James Fisher Michael Gazda Russell Gee JoAnne Hitchcock Gledi Progonati Christopher Zannoni ECE Senior Design 2012-2013 Team Members Advisors Chris Zannoni (ECE,

slide-1
SLIDE 1

Class II Division 2 Occupancy Sensors

James Fisher Michael Gazda Russell Gee JoAnne Hitchcock Gledi Progonati Christopher Zannoni

Presented on October 15, 2012 by:

ECE Senior Design 2012-2013

slide-2
SLIDE 2

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

slide-3
SLIDE 3

Agenda

  • 1. Occupancy Sensor Technology
  • 2. Hazardous Environment Classification
  • 3. Design Considerations
  • 4. Budget
  • 5. Timeline

ECE Senior Design 2012-2013

slide-4
SLIDE 4

What are Occupancy Sensors?

ECE Senior Design 2012-2013

slide-5
SLIDE 5

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

slide-6
SLIDE 6

Occupancy Sensor Technology

Relay and Power Supply for Sensor

Sensor Luminaire Line Voltage Sensor Power (Low Voltage<200 mW) Control Signal Manual Switch

ECE Senior Design 2012-2013

slide-7
SLIDE 7

Why use Occupancy Sensors?

Energy Savings Electricity Bill Savings Convenience

ECE Senior Design 2012-2013

slide-8
SLIDE 8

Hazardous Environments

I II 1 Gas frequently present Dust frequently present 2 Gas present abnormally Dust present abnormally

Class Div

ECE Senior Design 2012-2013

slide-9
SLIDE 9

Groups of Hazardous Dusts

Group E: Metal dusts (conductive, and explosive) (resistivity <100 kΩ/cm) Aluminum Calcium Silicide Titanium ECE Senior Design 2012-2013

slide-10
SLIDE 10

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

slide-11
SLIDE 11

Groups of Hazardous Dusts

Group G: Flour, starch, grain, combustible plastic or chemical dust (explosive) (resistivity >100 kΩ/cm) Flour Grain (Dust Cloud) Cinnamon ECE Senior Design 2012-2013

slide-12
SLIDE 12
  • 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

slide-13
SLIDE 13

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

slide-14
SLIDE 14

Ignition Curves for Resistive Circuits

ECE Senior Design 2012-2013

slide-15
SLIDE 15

Ignition Curves for Capacitive Circuits

ECE Senior Design 2012-2013

slide-16
SLIDE 16

Ignition Curves for Inductive Circuits

ECE Senior Design 2012-2013

slide-17
SLIDE 17

Temperature Regulations

ECE Senior Design 2012-2013

slide-18
SLIDE 18

Electrical Barriers

Relay and Power Supply for Sensor

Sensor Luminaire Line Voltage Manual Switch Zener diode barrier

ECE Senior Design 2012-2013

slide-19
SLIDE 19
  • Dust ignition proof:
  • 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

slide-20
SLIDE 20

20

  • 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

slide-21
SLIDE 21
  • 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

slide-22
SLIDE 22

Cost Considerations

  • 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

slide-23
SLIDE 23

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

slide-24
SLIDE 24

Timeline

ECE Senior Design 2012-2013

slide-25
SLIDE 25

Please visit our website to follow the project and for more info

(link on main ECE senior design page, Team 166)

slide-26
SLIDE 26

Questions?

ECE Senior Design 2012-2013

slide-27
SLIDE 27

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

slide-28
SLIDE 28

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