The Alpha Team

1. The Alpha Team Marray Harris Sakkina Sikandar-Gani Sivanesvaran Ishvaran

2. What Is the Problem? • The heat energy produced by radiation through building windows can either aid in lowering heating costs in the winter time or aid in raising energy cost in summer. • What can we do about this fact?

3. The Solution • Create a system that knows what time of year it is and how much heat radiation there is at a particular time of day. • Based on that information controls how much radiation comes inside.

4. The Choices • Thick coated glass • Remote Control Blinds • Automated Blinds

5. Which Choice to Make? • Thick Coated glass • Pros • Sufficiently keeps heat out in summer time • Con • Does not help save money in winter

6. Remote Control Blinds • Remote control blinds • Pro As long as human supervised does a reasonable job while human is home • Con • requires human interaction • have to keep up with remote control

7. Automated Blinds • Pro’s • Less expensive than thick Coated Windows • Easy altered to fit different size blinds • Works without any supervision • Con • As far as we know it has not been implemented.

8. Vision We believe that this product will be a good choice to use for any future plans that would tie all appliances in an house hold or building environment to a central controller such as a home computer.

9. Energy Savings? We are going to calculate the actual energy savings using the ‘97 Ashrae Handbook Fundamentals Administration

10. PROTOTYPEOVERVIEW UP1-BOARD TSL 245 photosensor L293D motor controller MAX 6510 outside temp. sensor Stepper motor MAX 6510 inside temp. sensor Window blinds

11. Why the TSL245? What does it do? How to Synchronize it Opto-Sensor

12. FUNCTIONAL BLOCK DIAGRAM

13. Synchronization D flip-flop Synchronized Tsl 245 clock Tsl 245 clock D flip-flop Altera clock

14. PROTOTYPE OVERVIEW UP1-BOARD TSL 245 photosensor L293D motor controller MAX 6510 outside temp. sensor Stepper motor MAX 6510 inside temp. sensor Window blinds

15. INDIVIDUAL ASSIGNMENT PHOTOSENSOR UP1-BOARD OUTPUT External Resistor MAX6510 (OUTSIDE) External Resistor MAX6510 (inside) External Resistor MAX6510 (inside)

16. Rset vs Threshold(between 32 F to 257 F)

17. OUTPUT OF EACH TEMPERATURE SENSOR • Hysteresis keeps the output from oscillating when the temperature is close to threshold

18. WHY CHOOSE MAX6510? • Cheap ( costs $0.72 each) • Easy to interface with the UP1-Board because the output is either logic high (if it exceeds threshold temperature) or logic low (otherwise)

19. If there is light Inside Temperature Outside Temperature Window Blinds L X OPEN M L OPEN M H CLOSE H L CLOSE H H CLOSE TRUTH TABLE OF THE SYSTEM

20. FLOW CHART RESET Light Checking Routine Temperature Checking Routine Control Shade? NO YES Control Shade (open/close)

21. ASM CHART (PhotoSensor) RESET Is Cnt=“0000”? NO Out=0 Cnt_en=0 TSLcnt_en=0 Cnt=“1111” TSLcnt=“0000” LdThreshVal YES Cnt_en=0 TSLcnt_en=0 Cnt_en= TSLcnt_en=0 Temperature Checking Routine Is TSLcnt>= LdThreshVal? Cnt_en=1 TSLcnt_en=1 YES NO

22. ASM CHART (Temperature Sensors) Light Checking Routine No Is MAXInsideB=‘1’? Out=‘1’ Out=‘0’ Yes Yes No Is MAXInsideC=‘1’? No Is MAXOutsideA=‘1’? Yes Out=‘1’ Out=‘0’

23. TIMELINE 8/21/2000 To 9/3/2000 (2 weeks) • Lists as many • ideas as possible • Final decision • on the project • Prototyping the project • Decide on hardware and • software features to use 9/4/2000 To 9/10/2000 (1 week)

24. TIMELINE(cont’d) 9/11/2000 To 9/24/2000 (2 weeks) • Decides on the parts to use • for photosensor, temperature • sensors, motor controller and • motor • Decides on interface to use • for communication between • the parts • start ordering the parts

25. TIMELINE(cont’d) 9/25/2000 To 10/8/2000 (2 weeks) • Waiting for the parts • Starting on ASM chart • Preparing for critical design • review presentation 10/9/2000 To 10/22/2000 (2 weeks) • Parts arrival • Starting on VHDL coding • Starting on the motor system

26. TIMELINE(cont’d) 10/23/2000 To 11/12/2000 (2 weeks) • Working on the integration • of the whole systems • (photo sensor, temperature • sensors and motor) 11/13/2000 To 11/19/2000 (1 week) • Testing the final product • under various conditions

27. TIMELINE(cont’d) 11/20/2000 To 11/26/2000 (1 week) • Doing the Project report • Prepare for the final • presentation

28. PROTOTYPE OVERVIEW UP1-BOARD TSL 245 photosensor L293D motor controller MAX 6510 outside temp. sensor Stepper motor MAX 6510 inside temp. sensor Window blinds

29. INDIVIDUAL ASSIGNMENT PHOTO SENSOR UP1-BOARD L293D Motor Controller Outside Temp sensor Stepper Motor Inside Temp sensor Window Blinds Inside Temp sensor

30. L293D Motor Controller • Ability to control two independent motors • We’ll be using only one motor • EN1=> on/off motor A • DIRA1=> controls one direction • DIRA2=> controls the opposite direction

31. L293D Motor Controller(cont’d) • Wire will be connected directly to DIR1A and to an inverter • The output of the inverter will be connected to DIRA2 to ensure the directions are opposite to each other • Vs=> power for motors (5V – 36V)

32. PROTOTYPE MODEL

33. TESTING THE SYSTEM • Build a complete model of the system • Generate various temperature range to test under various conditions How to generate temperature range:- • For winter - use the cold can spray - 100 watts bulb for light

34. TESTING THE SYSTEM(cont’d) b) For summer - heat will be generated using portable heater - light will be generated using 100 watts bulb

35. COSTS OF PRODUCT

36. ENGINEERING STANDARDS &REALISTIC CONSTRAINTS Professional IEEE standards • overall system should guarantee safety of life, preservation of property, reliability and simplicity of operation. Realistic Constraints: • All the chips will be operated within their functionality range to avoid permanent damage to the chips *Source: http://standards.ieee.org/reading/ieee/ 10/9/2000

37. MANUFACTURABILITY, SUSTAINABILITY & ECONOMICS Manufacturability : • This device should be easily manufactured since most of the components such as the light and temperature sensors are easily interfaced with each other and are readily available • All the components are inexpensive Sustainability : • It would be more practical if the design is compatible with all major blinds in the market. Hence, the users don’t have to make any modification when installing this device to their blinds

38. MANUFACTURABILITY, SUSTAINABILITY AND ECONOMICS (cont’d) Economics : • Final product would be economical, inexpensive and affordable to the average users (since the costs to produce this product is about $15.00)

39. ENVIRONMENTAL, HEALTH/SAFETY(cont’d) Health/Safety : • This device is installed with the manual override to ensure the safety of the users • This device is environmentally safe and doesn’t produce any kind of environmental pollution

40. ENVIRONMENTAL & HEALTH/SAFETY Environment : • This product in intended to conserve energy by efficiently controlling the amount of radiant heat that enters a building through glass windows

41. SOCIAL &EHTICAL CONCERNS Social : • Privacy of the user is not violated as this device is equipped with a manual override Ethical : • All the parts used are safe and in perfect conditions (defect parts would not be used at all)

42. LABOR DIVISION Marray Harris • Getting the value(freq) from the photosensor • Interfacing the photosensor and the UP1-board • Building the complete model of the system Sakkina Sikandar • Getting the temperature values from the temperature sensors • Interfacing the temperature sensors and the UP1-Board • Building a complete model of a system

43. LABOR DIVISION(cont’d) Sivanesvaran • Interfacing the motor controller and the UP1-board • Interfacing the motor controller and the stepper motor • Interfacing the stepper motor and the window blinds • Building a complete model of the system Responsibility will be rotated for web designing/updating and also Meeting minutes.