SDMay06-08 Design Review

1. SDMay06-08Design Review Home Smart Ventilation System

2. SDMAY 06-08 • Faculty Advisors Dr. Zhao Zhang Dr. Arun Somani • Client National Instruments • Team members Austin Kelling Carson Junginger Suwandi Chandra Gerald Ahn

3. Outline • Project Overview • Detailed Description • Example of Use • Problem Statement • Operating Environment • Intended users & uses • Assumptions & Limitations • Expected End-product • Detailed Design • Network Setup • Device Control • Server Interface Design • Design Approach • Future Changes

4. Project Overview • A system using miniature sensing and controlling nodes, to increase ease of use for common electronic devices and provide custom server managed operation of those devices. • Miniature sensor and processing nodes = QBX modules developed by National Instruments • Bluetooth communications for everything

5. QBX • By National Instruments • Dimensions : 4 x 4 x 4 cm • Weight : 82g (2.9 Oz) • Modules: • Bluetooth • MMC • Processor • RS232 • Power • Extension

6. Detailed Description • Bluetooth - Wireless personal area networkfor short-range radio links between mobile computers, phones, and other portable devices • LabVIEW - Laboratory Virtual Instrument Engineering Workbench, a graphical programming language that used to program the QBX module • QBX - LabVIEW programmable hardware used to sense, process, store, and communicates via Bluetooth and serial port • VI(Virtual Instruments) - Sub-unit program in LabVIEW that represents the appearance and function of a physical implementation

7. Example of Use • Super Mom Scenario It is another crazy morning with three kids. Super mom has to prepare each kid with their breakfast, lunch box, after school program items, and so on. Super mom also needs to check all the lights, TV, stereo. Time is limited. How can she do everything before taking the kids to school?? Wouldn’t she be really SUPER if she has a Bluetooth device that can control all of the devices at once!!

8. How our project will improve life • Time saving • Efficient heating and cooling control • Improved home security • Ease the use of all QBX controlled devices • Easy to use for both Technical and Non-Technical users • System Security

9. Why you need our system • It’s efficient and reliable • It’s secure • Saves you time • Saves you money • Allows for mass customization of home or small office • Uses existing technology to make your life easier

10. Problem Statement • Simplify control in the home or small office • Control different kinds of electrical devices • Affordable and easy to use for the user

11. System Outlook • This is a representation of how the system will be set up in a three-story house. • There are QBX modules connected to motors that control the vents on each level of the house. • When the temperature of one of the floors raises above or drops below the desired temperature, the QBX modules open the vents and turn on the appropriate temperature control device.

12. Operating Environment Host Computer: • Operating System: Windows XP and LabVIEW Embedded. • IOGear GBU311 Bluetooth adapter with range of 30ft. • Remote desktop enabled QBX module: • Indoors with temperature between 32°F - 120°F. • Rechargeable 3.6 V battery, and 110 V AC power.

13. Intended Users and Uses Intended Users • Able to use a basic windows operating system based computer. • Able to remote desktop into the host computer Intended Uses • Equalized temperature on all floors of a building • Heating and Cooling of separate floors with an advanced algorithm • Remote control of temperature

14. Assumptions – 1/2 User Assumption: • User knows English in order to understand the user interface and manuals of the system. • User has a basic knowledge on how to operate personal computer. • User owns a computer with Windows XP operating system and Bluetooth adapter. • The host computer terminal can access by authorize users only. • User has a secure network which the server is connected to.

15. Assumptions – 2/2 System Assumption: • The system (including the server) is expected to run 24 hours. • The system will have a user-friendly graphical interface for the server. • QBX module should plug-in to AC power for power recharge and longer use • Modeling of ventilation control

16. Limitations • Need for a server computer running 24/7 • Interference with Bluetooth communications • QBX module power dependencies • Data transfer rate fades at longer distances • System is customized for our prototype only

17. Benefits of our project • Cost efficient heating and cooling control of a multi-level building • Equal temperatures on all floors of a building • Easy to use for both Technical and Non-Technical users • Remote control of temperature

18. Expected End-Product – 1/2 • To have a GUI based LabVIEW program running on a host computer that can control one or more QBX module via Bluetooth. • To have uniquely customized QBX modules that control the airflow of the cooling and heating devices use. • Our system will be accessible through remote desktop access from anywhere that has an internet connection.

19. Expected End-Product and Deliverables – 2/2 • A demonstration of the system consisting three QBX modules place inside each of three stack of plexiglass boxes that has heating and cooling element in two of the boxes, and a host computer. • A reference manual containing how to set up each QBX module, breadboard for power control, mobile devices and how to operate the host computer and use the GUI. • A collection of the VIs and sub-VIs for operating our system

20. Design Activity • A step-by-step list of what will occur when the system is activated. • On the host computer: • The user will set the desired temperature control device (A/C or Heat). • The user will then set the desired temperature that the house should stay at. • On the QBX modules: • If the temperature of the floor that the QBX module is monitoring differs from the temperature set by the user, the QBX will open the vent, and if the temperature control device is not already on, the QBX will turn it on. • The QBX modules will all work independently to ensure that each of the floors of the house are at the same temperature. • This system will eliminate large temperature differences between the floors of multi-story houses.

21. Technology Considerations • SHT11 Temperature Sensor • This sensor comes fully calibrated and offers long term stability at a low cost. • Bluetooth • This technology is used because the QBX modules are equipped with Bluetooth communication modules.

22. Technology Considerations • Labview Embedded • This software was given to us by National Instruments in order to communicate with the QBX modules. • Stepper Motors • The most practical motor to use for vent control. • QBX Voltage Module • This will be used to control the stepper motors and turn the temperature control devices on or off.

23. Technology Considerations • Relays • The system will use relays connected to the QBX voltage module in order to turn the different devices on or off. • Working Model • The team will construct a model to demonstrate how the system would work in an actual home using these technologies.

24. Working Model • The model will be constructed of three shoebox sized compartments that will represent the floors of a house. • The front and rear of the model will be made from a clear material in order to see inside. • This model will demonstrate how the system works just as it would in an actual three-story house.

25. Implementation Activities • Interface – Host computer • VIs • Host Computer • QBX modules • Hardware Setup – Relay & Stepper Motor

26. Host Computer Interface

27. Host Computer VI

28. QBX Module VI

29. Personal Effort Requirement

30. Other Resources Requirement

31. Financial Requirement

32. Schedule

33. Project Evaluation

34. Commercialization • There are no commercialization consideration for our project. • Proof of our concept of the system in instead environmentally friendly.

35. Future Recommendation • Extension of the control devices to other electronic devices such as: TV, Radio, and Lights, etc. • Extend the controlling by using Bluetooth devices to control all the electronic devices. • More specific profile setting for specific user for all the devices.

36. Risk Management • Anticipated potential risks • Loss of team member • Loss of code • Unanticipated risks encountered • Loss of documentation • Constraints on usage of resources • Resultant changes due to risks encountered • Changes in project goals • Slow development

37. Lesson Learned • What went well? • Good advisory meetings • Good team communication • What did not go well? • Defining the project • Slow early development • Bluetooth Connectivity

38. Lesson Learned Cont’d • Technical knowledge gained • LabVIEW programming • Experience with SHT11 sensor & Stepper motor • Bluetooth Technology • Non-technical knowledge gained • Project management skills • Learned the importance of organizing project resources • Learned the importance of meeting deadlines

39. Closing Summary • The goals of this project is to: • Provide a user a cost efficient heating and cooling control of a multi-level building that is easy to use for technical and non-technical users • Introduce a smart module with wireless capability to control air flows in home ventilation system

40. Thank You!!