1. P13036 Notification Alert System Design Review Date: December 21, 2012 Meeting Location: 17-1545 Meeting Time: 2:00 – 3:30 pm

2. Technical Review Agenda P13036: Notification Alert ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Members Patrick Ganson, CEStephen Moskal, CEUmer Usman, EE Elizabeth Phillips, EEThomas Adcock, MEWilliam Johnson, ME Meeting Purpose: 1. Overview of Project 2. Discuss Customer Needs and Specifications 3. Concept Development 4. Initial design approach 5. Schedule for further development. Materials to be Reviewed: 1. Project Description 2. Customer Needs and Specifications 3. Functional Decomposition 4. Initial Casing Drawings/Material & Shaker Design Concept 5. Software Flowchart/Microcontroller Concept Selection 6. Electrical Block Diagram/Wireless Communication Concept Selection 7. Risk Assessment 8. Team Schedules 9. Questions/Concerns

3. Meeting Timeline Start TimeTopic of ReviewRequire Attendees 2:00Introduction to ProjectDr. Slack, Dr. Behm 2:10Customer Needs and SpecificationsDr. Slack, Dr. Behm 2:20Functional DecompositionDr. Slack, Dr. Behm 2:25Initial Housing DesignsDr. Slack, Dr. Behm 2:30Concept Development – Housing and ShakerDr. Slack, Dr. Behm 2:35Initial Software Development Flow ChartDr. Slack, Dr. Behm 2:40Concept Development – Microcontroller Selection Dr. Slack, Dr. Behm 2:45Initial Electrical Hardware DiagramDr. Slack, Dr. Behm 2:50Concept Development – Wireless Communications Dr. Slack, Dr. Behm 2:55Risk AssessmentDr. Slack, Dr. Behm 3:05Schedule OverviewDr. Slack, Dr. Behm 3:15Questions, Comments, ConcernsDr. Slack, Dr. Behm

4. Product Description Project Background: For deaf and hard of hearing users, to wake up via an alarm would require a bed shaker and/or flashing light source. Many devices in the market now are very limited on additional functionalities. The product to be designed would combine the bed shaker and light source alarm system but also implement the use of a Bluetooth device to expand the ability to receive alert and alarms from a mobile device wirelessly. Problem Statement: Provide a useful system for notification that will be both flexible and versatile, allowing for better utilization of many smart phone features that rely on notifying the user. Overall the goal on this iteration of the project is to reduce size and improve features and functionality all while maintaining a reasonable product cost. Objectives/Scope:  Make a competitive device for the market.  Reduce the size of the final product to allow for travel applications.  Improve the Bluetooth technology to expand the range of performance for alert notifications. Deliverables:  Provide a complete product that can be marketed for future use.  A user friendly GUI/Mobile Application.  Manufacturing Guide for production.  Schematics of electrical and mechanical designs.  Provide a product that can be used for further development. Expected Project Benefits: The motivation for this project is to improve the quality of life of deaf and hard of hearing users. This includes providing more independence for the users of the deaf community by using their mobile devices as a means receiving alerts and alarms. Assumptions & Constraints:  Use of Bluetooth technologies in order to interface with user’s mobile devices.  Device must be portable; a reasonable weight and size for travel purposes.  Finished project with the assumption of being manufactured Risks/Issues:  Due to additional features (LCD/LED screen) and the microcontroller, target size and weight of the product may not reach specifications.  Including extra features can increase the time it takes to build the product by hand/machine.  Materials and devices used in the product may not be readily available for mass production.  Final cost of the product may exceed initial expectations depending on final concept selection.

5. Customer Needs Customer Need #ImportanceDescriptionComments/Status CN12 Lightweight CN22Small size for travel and easy to carry CN33Power LED Indicator CN42Alarm LED Indicator CN52 Bluetooth LED Indicator CN61Plug in bed shaker and/or light to activate via alarm CN71Blinking High Intensity LEDs CN83Variable blinking patterns for LEDs CN93Control varying shaking intensities CN102Quality product CN112 Rechargeable batteries. CN121External power connection/charge batteries CN133 24 hour battery life for travel CN141 Deliver a functional prototype CN152Keep the product inexpensive (20-40$)Could between $80-$100 CN162 Stand alone alarm when PDA is not synced CN172Quality/attractive shell/external design CN182Long Lifetime (roughly 10 years) CN192User-friendly Product CN202LCD Display to show clock/alarm CN212Output will deactivate after a reasonable amount of time CN222Acceptable range Bluetooth device (50 m) CN232Alarm turn off switch when activated CN242Switch to disable alarm anytime

6. Product Specifications Spec. # ImportanceSource SpecificationUnit of MeasureMarginal ValueIdeal Value S12 CN1, CN11, CN17, CN20WeightPounds less than the prototype less than 1/2 prototype S22 CN2, CN11, CN17, CN20Sizein^3 less than the 22.56 in^3 less than 11.28 in^3 S32 CN3, CN4, CN5, CN20Indication Systemrequirementn/a S41 CN7 Activation System (Light source, Bed Shaker)requirementn/a S52CN8Variable flashing frequenciesfrequency2 settings3 settings S62CN9Variable shaking frequenciesfrequency2 settings3 settings S71CN6, CN12, CN21 Compatible recharger plugs for Light source and Bed Shakerbinaryn/a S82CN11, CN13Robust Rechargeable Batterieshours824 S92 CN15Low Cost Unit Manufacturing Cost (US dollars) per 500 units10020 S101 CN20 Alarm Activation (self-sustaining clock)accuracy ± 5 minutes actual time ± 1 minute actual time S112 CN18Lifetime of Productyears1 years5 years S123 CN17Drop Standard (design range)G's2025 S132 CN1, CN17Housing Material SelectionTBD S143 CN17Shock ResistanceTBD S152 CN22Distance that Bluetooth worksmeters50100 S162 CN10, CN14, CN22Percent Reliability% Successful trials90/100100/100 S172 CN16, CN19, CN23, CN24Alarm self-deactivate/self-reactivaterequirementn/a S183 CN19, CN23, CN24Time it takes to deactivate systemseconds52 S192 CN17Device temperatureFahrenheit7232 – 140

7. Functional Decomposition

8. Mechanical Design

9. Mechanical Design (contd.)

10. Material Concept Selection For the housing material selection ABS plastic was chosen due to ease of manufacture and low cost. While having a lower tensile strength than alternatives such as aluminum, the reduction in strength is not crucial in this application due to the housing not supporting a significant structural load. One disadvantage is the lack of conductivity thermally, meaning further thermal analysis will be required.

11. Shaker Concept Selection For the shaker selection the 12V and 5V shakers are both feasible. The choice between them hinges on the electrical system. While the 12V shaker is more powerful and may already be owned by the end user, but the 5V shaker will interface better with the power system. The initial selection is the 12V shaker and depending on the challenges experienced by the team members working with the electrical system may be switched to 5V.

12. Software Flowchart S3 = Indication System S4 = Activation System S5 = Variable Flashing Frequencies S6 = Variable Shaking Frequencies S10 = Alarm Activation S17 = Alarm Self Activate/Deactivate

13. Microcontroller Concept Selection The Raspberry Pi was selected because of it's robustness, versatility, and popularity. The rPi uses a ARM11 system on a chip microprocessor that allows for a Linux-based operating system to run. This allows for a vast amount of different programming languages and interfaces that normally are not available in other embedded systems. The rPi opens the door for a more modular software design because of the strong developer's following and ease of coding. Other similar boards have more IO pins and are more powerful than the rPi however, the major downfall is the price is significantly higher. The rPi provides a strong base and potential in a small and inexpensive package at the expense of IO's and having too many unneeded features.

14. Electrical Block Diagram S1 = WeightS7 = Compatible Recharger Plugs S2 = SizeS8 = Robust Rechargeable Batteries S3 = Indication SystemS15 = Distance Bluetooth Works S4 = Activation SystemS16 = Percent Reliability S5 = Variable Flashing FrequenciesS17 = Alarm Self Activate/Deactivate S6 = Variable Shaking FrequenciesS19 = Device Temperature

15. Wireless Communications Concept Selection Based on current research, Bluetooth seems to be the likely technology to be chosen. The BlueGiga recommendation from the customer was taken into consideration. However, final recommendation can not be made until research is complete.

16. Risk Assessment

17. ME Schedules

18. CE Schedules

19. EE Schedules

20. The End! Questions? Comments?