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Class II Division 2 Occupancy Sensor Class II Division 2 Occupancy - PowerPoint PPT Presentation

Class II Division 2 Occupancy Sensor Class II Division 2 Occupancy Sensor Presented on November 28, 2012 by: Presented on November 28, 2012 by: James Fisher James Fisher Michael Gazda Michael Gazda Michael Gazda Michael Gazda Russell Gee


  1. Class II Division 2 Occupancy Sensor Class II Division 2 Occupancy Sensor Presented on November 28, 2012 by: Presented on November 28, 2012 by: James Fisher James Fisher Michael Gazda Michael Gazda Michael Gazda Michael Gazda Russell Gee Russell Gee JoAnne Hitchcock JoAnne Hitchcock Gledi Progonati Gledi Progonati Christopher Zannoni Christopher Zannoni Dr. Sung Yeul Park (ECE) Dr. George Lykotrafitis (ME) Dr. Sung Yeul Park (ECE) Dr. George Lykotrafitis (ME) Senior Design 2012 Senior Design 2012- -2013 2013

  2. Agenda Agenda � Background � Initial Design Approaches � Meeting Outcomes � FM Approvals � Sensor Switch Sensor Switch � Final Design Approaches � Plan for next semester � Testing of design � Gantt chart and team member roles ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  3. ����������� � What are occupancy sensors? � Why? ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  4. ��������������������������� Sensor Power (Low Voltage<200 mW) Relay and Line Power Supply Voltage for Sensor for Sensor Control Signal Control Signal Sensor Sensor Manual Switch ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  5. �������������������������� � ������������������������������������������� ����������� ○ ����������!����"��������!����������������������� �"���������������� ○ #���������$������������� ○ #���������$������������� � ���������������� � %����������������������!���������������"��������� �������� � ������������������������������������������������� ������������ � ������������������������ ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  6. �������������������������� ��������������������������� ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  7. ������������������������������ Dust'Tight Conduit Line Relay and Power to Voltage Power Supply Luminary for Sensor Control Control Dust'Tight Enclosure Sensor Signal Power Sensor Window made out of IR transmissible material ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  8. ������������������������������ ������������������ ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  9. !��������"��������� ������������������ ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  10. ��������#$����%�������� � Our research led to many unanswered questions about requirements � What are the testing methods? � Which, of the many, requirements are relevant to our project? our project? � What are the component and design restrictions? � We contacted a NRTL � FM Approvals offered to help ○ Answered many questions ○ Provided expert opinions ○ Helped finalize our approach ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  11. & �'������������������� � OSHA approved testing/certification company � Parent company: FM Global � In business since 1835 � Make the regulations that drive industry Make the regulations that drive industry standards � Acts as disinterested, 3 rd party observer where design process is concerned � Qualified to test for IS (intrinsic safety), dust' ignition proof, explosion'proof, etc. ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013 11

  12. & �'��������� ������ � Explained the testing process: � Duration � Approach � Various tests depending on desired � Various tests depending on desired certification: ○ Crush, exclusion (purge/pressurize), flammability, rigidity, torque, mould stress, hot and cold impact, intrinsic safety ○ Will be explained later in presentation � General requirements to pass tests ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013 12

  13. & �'��������� ������ � We explained the initial designs � Received feedback ○ What would/wouldn’t pass testing ○ Discussed possible solutions and provided specs. specs. � Enclose the sensor using dust ignition proof standard � Or make sensor intrinsically safe using provided standard � Changes needed from initial product to completed, passable design ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013 13

  14. �������������� ������ � Gave us two options � Enclose the sensor ○ Find a 1mm thick Fresnel lens for PIR sensor window � Make sensor intrinsically safe ○ Professor Park advised us to do this option ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013 14

  15. �������(������ � Brainstorm � Evaluate � Advisement � Sensor Switch Meeting � Sensor Switch Meeting � FM Approvals Meeting � Advisor’s Recommendation � Finalize � Create ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013 15

  16. &������������'������� Dust'ignition proof box enclosing relay according to the FM3616 standard Intrinsically safe sensor according to FM3610 which refers you to ANSI/ISA60079'0 and ANSI/ISA60079'11 standards ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013 16

  17. ������������������������ � We will build an apparatus to determine whether the enclosure is dust tight. is dust tight. � Create vacuum within enclosure � Circulate talcum powder within chamber ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  18. �������������� � 2.7 J impact test for Class II � 1kg test mass, falling from height 270mm � Steel hemisphere 25mm diameter as � Steel hemisphere 25mm diameter as impact point � Unit assembled, mounted on concrete with mass over 20kg � (Drop test not necessary' not portable) ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  19. ��������)�������� � Non'metallic elements which dust' protection is dependent must undergo thermal endurance testing � Heat: 4 weeks at (90±5)% humidity, � Heat: 4 weeks at (90±5)% humidity, (20±2)K above maximum service temperature � Cold: 24hr, 5 to 10K below minimum service temperature ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013

  20. �������������������������� � Determine how circuit works � Recently acquired blueprints � Work with Sensor Switch engineers � Analyze components for IS � Analyze components for IS � Redesign � PSpice analysis � PCB Design and Prototype � Practical tests ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013 20

  21. ��������*(��� ��������� •Initial Hazardous Environment Research'found required specs •Meeting with Sponsor (9/19) ������� •Requested Blueprints •Website Design •Projects specifications •Project Statement •Website finished •NEC research 1500p doc •NEC research 1500p doc •Found 12 specs relating to project �������� •Contacted FM Approvals •Enclosure design •Final Written Proposal •Project specs redefined •FM Approvals meeting •Setup meeting with FM •Project redefined approvals •Sensor Switch meeting •Wireless and Wired research •Project Redefined •Test equipment researched •Blueprints received •Final Presentation 21

  22. ��������*&����� December January Febuary March April Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk Wk 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Figure out circuit w/SS Winter Break Initial Enclosure Design Finalize Enclosure design Build Test Equipment Analyze components for IS Redesign Circuit Prototype Circuit PCB design Test Circuit Test Enclosure 22

  23. �����������������+�,���� � Russell � Design and Build Test Equipment � Gledi � PCB Design and Help with Test Equipment � JoAnne � JoAnne � Circuit Design and Circuit Testing � Mike & James � Designing, Prototyping, Testing of Relay Enclosure � Chris � Team Management and Circuit Testing ECE Senior Design 2012 ECE Senior Design 2012- -2013 2013 23

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