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Home Kinection

Home Kinection. Brian Bowman, Reid Erekson , Stephen Larew , Will McGrath,. Summary.

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Home Kinection

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  1. Home Kinection Brian Bowman, Reid Erekson, Stephen Larew, Will McGrath,

  2. Summary This system is designed as a novel interface to a more standard home automation system. To achieve that goal, the system needs to ensure that the interface is fluid, while maintaining the benefits of normal home automation systems. The system should also be compatible with as many home typical targets of home automation technology as possible. Additionally, the cost of the automation modules should fall close to the price of existing modules.

  3. PSSCs • 1. An ability to control AC lights/appliances. 2. An ability to control IR-based devices (TV, etc.). • 3. An ability to control a motorized shade (up/down). • 4. An ability to control a computer (via a "virtual touchscreen ") using gestures and voice commands. • 5. An ability to distinctly interpret the gestures and voice commands required for all control functions of the system.

  4. Block Diagram

  5. Block Diagram (continued)

  6. Block Diagram (continued)

  7. Major Constraints • Cost • Existing home automation is fairly pricey, but lower is better • Compatibility • Interface with a wide range of A/V equipment, AC loads, shades and computers • Latency • Gesture commands for HID should have as little lag as possible

  8. Computation Requirements • Base Station • Identifying user • Gesture Recognition • Voice Recognition • Module Boxes • Recording and playback of IR commands • Handling commands and output

  9. Interface Requirements • Base Station • Communicate with Kinect (USB) • Send commands to Modules (Serial to Daughter Board, ZigBee to Module Boxes) • Module Boxes • Each interface box must communicate with a different peripheral • A.C. control circuitry • IR send and receive • CCI for blinds • USB for HID

  10. On-Chip Peripherals • Base Station (Mini ITX Mother board and daughter board) • USB • Connect to Kinect • Serial • Serial to connect to daughter board and then to wireless module • Module Boxes • All varieties require 1 SPI for wireless and 3 PWM for feedback LED. • Shade module requires only 2 additional digital I/O (if Lutron CCI used) • Dimmer: 1 PWM, 1 A/D (manual control) , 1 I/O(on /off) • IR: >1 PWM (multiple IR outputs), 1 I/O (record Command) • HID: 1 UART (serial to USB interface chip)

  11. Off-Chip Peripherals • Base Station • Kinect • Wireless Module • Module Boxes • AC dimmer circuitry • SCR • Zero point detector • IR interface • IR LED • IR 40kHz receiver • Wireless modules • DC Relay for shade • USB interface IC

  12. Power Constraints • Both the base station and all modules except the HID are powered by A.C. • The HID is powered by D.C. from a USB port • The module boxes should not require active cooling • The HID cannot exceed the 1A provided by USB

  13. Packaging Constraints • Module boxes should be unobtrusive • Base station should not be excessively large • Base station packaging needs to contain a mini ITX Motherboard • Module box packaging should not interfere with wireless communications

  14. Cost Constraints • Module boxes should not be excessively expensive (Insteonis $30 per box, Lutron is $50 per dimmer) • Base station is not strictly constrained due to the large cost of other home automation hardware (>>$1000 for Lutron whole home control)

  15. Component Selection • Microcontroller • Needs 4+ PWM outputs • Needs SPI and SCI • USB a plus • Wireless Module • Supports one-to-many network structures • Range must cover a reasonably sized room (~30’)

  16. Selected Wireless Modules • MRF24J40MA • Supports the Zigbee protocol • SPI interface • Fairly inexpensive ($9)

  17. Selected Microcontrollers • PIC18F27J53-I/SO • 8 bit with 10 PWM, 2 SCI, 2 SPI • USB support • ZigBit 2.4GHz Module with Dual Chip Antenna • 8 bit with 8 PWM, UART, SPI • Built in Wireless module and antenna that supports the Zigbee protocol • Integrated solution • $30 per module

  18. Questions?

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