1. Smoke Notification System (SNS) Final Presentation Senior Design II November 19, 2013

2. Team Members Genetrice Stevenson Electrical Engineering George Wonsley Team Leader Electrical Engineering Richard Matson Electrical Engineering Dr. Raymond Winton Team Advisor Website Hardware Design Wireless Communication PIC Programming Hardware Design Technical Documentation Debugging Technical Documentation PCB Design

3. Problem Solution Constraints Technical Practical Testing: System Testing: Design Constraints Package Design Cost of Materials Questions

4. Problem and Solution

5. Problem Not every individual has the ability to effectively hear the standard smoke detector signal of 3100 Hz or higher. Individuals with hearing disabilities are the target market group for the SNS.

6. Current Market Current solutions are either too expensive or do not come equipped with all suitable notifications. [1] [2] Gentex Corporation Models available with audible/visual alerts Price Range: $150-$160 Silent Call Models available in pairs: audible/vibration or audible/visual Price Range: $127-$310

7. Solution The SNS aims to address the present limitations of smoke detection systems. Two device system: central unit and alert unit. Designed to work with existing smoke detectors. Incorporates vibration and visual alerts within one product.

8. Technical and Practical Constraints

9. Technical

10. System Overview Power Supply Existing Smoke Detector Microphone Wireless Transmitter Microcontroller Power Supply Wireless Receiver MotorStrobe Light Central UnitAlert Unit

11. Practical Dimensions of the central unit will not exceed 5” x 5” x 3”. Takes up the least amount of space possible Ensures all components fit properly inside the package Alert unit will be no larger than 3” x 4” x 3”. Manufacturability : Product Size

12. Practical The SNS must be user friendly and easy to operate. No training or extensive labor to install No maintenance (ex: battery changes) Simply plug both units into wall outlet Usability : Customer Convenience

13. Testing: System

14. Voltage Check

19. Microphone

20. Filter

21. Comparator

22. Software Alert Unit off Alert Unit on

23. Software

24. Testing: Design Constraints

25. Transmission

26. Transmission Range (feet) Percent Connectivity (%) 1100 2095 4082 6075 8036 1007

27. Response Time Test Seconds 1 4 2 1 33

28. Package Design

29. PCB

30. Alert Schematic

31. Alert PCB 2.3” 3.4”

32. Alert PCB Darlington Pair Power Connector Microcontroller

33. Packaging Alert Unit

34. Packaging Final Alert Unit

35. Packaging

36. Central Schematic

37. Central PCB 3.1” 3.3”

38. Central PCB On/Off Switch Microcontroller Buffer

39. Central PCB Filter Comparator

40. Packaging Central Unit

41. Packaging Final Central Unit

42. Packaging Final Motor Enclosure

43. Packaging

44. Cost of Materials

46. References [1] (2013, February 13). “Audible/Visual Signaling Appliances,” in Fire Protection Products [Online]. Available: http://www.gentex.com/fire/productshttp://www.gentex.com/fire/products [2] (2013, February 13). “Smoke, Fire, & CO Detection,” in Silent Call Communications [Online]. Available: http://www.silentcall.com/catalog/product_info.php?cPath=6&products_id=91&osCsid=527f7fff6fb1379d31318c d94d6d2165 http://www.silentcall.com/catalog/product_info.php?cPath=6&products_id=91&osCsid=527f7fff6fb1379d31318c d94d6d2165

47. Smoke Notification System (SNS) Questions?