SMART HOME SYSTEMS. Group 10. Daniel Moody CpE Thien Luu EE Joel LeGros EE Vu Ha EE

Transcription

1 SMART HOME SYSTEMS Group 10 Daniel Moody CpE Thien Luu EE Joel LeGros EE Vu Ha EE

2 Motivations Energy efficiency light automation, appliance control Convenience control through your portable devices Security Alarms and security camera video feed Entertainment Music and intercom

3 Objectives 1. Basic control systems Relay switch control from internet Motion/security sensing 2. Streaming Audio Music Intercom/Voip 3. Video Streaming video to phone

4 Specs and Requirements Low power usages Needs to run off back-up power for at least a day System need to draw less then 4 amps max Low Cost Less then $600 for basic system Needs smart phone or similar device to fully utilize system

5 Overall Block Diagram Two Processing boards Spinneret OMAP Arduino and relay talk to spinneret Spinneret talks to OMAP

6 Parallax Spinneret Web Server Cheap and efficient board made specifically to run a web server ($60). 2 MCU Propeller P8X32A 160 MIPS(~80 MHz), 32K RAM, 32 I/O Wiznet W Ethernet Controller, 16K Tx/Rx Buffer Pros MicroSD slot for data storage Doesn t require OS Cons 8 I/O pins available, (2 which are I2C)

7 Daniel Spinneret Schematic

8 Zoom OMAP-L138 - TI OMAP- L138 DSP processor MHz max KB cache for DSP processing - SD Card interface - Run Linux From SD - 10/100 Ethernet - Audio Codec - USB

9 Use of the Spinneret Originally decided to use the spinneret because of cost. Just recently we acquired the TI board on loan. The TI board can easily handle all of the spinnerets jobs, plus audio and video processing. We may use the spinneret as a daughter board to the TI board because it has already been tested and is working effectively.

10 Lighting/Outlet Conrol - JQX-15F(787) Relay - rated up to 220 VAC at 20 Amps - Normally open relay - Single pole double throw - Control though Parallax microcontroller - 5 V signal turns the relay off and on

11 Relay Schematic

12 Relay/Outlet Control Top Side Bottom Side -Fits into a single gang box - Control and power cables for the signal will come in on a 3 conductor cable into one side of the box. - GFCI outlet allows LED to see when light or outlet is live.

13 Parallax PIR Motion Sensor Detect a IR source up to 30 ft. away 110 degrees x 70 degrees detection range Power: 3.3 to 5 VDC input; 130 µa idle, 23 ma active Single bit high/low output Dimensions: 1.27 x 0.96 x 1.0 in Applications: Motion-activated lights Alarm systems Holiday animated props

14 PIR Motion Sensor

15 Arduino Uno Microcontroller Board o Control the lights using the PIR motion sensor and the relay o ATmega328 microcontroller o Input Voltage 5-12 VDC o Output VDC at ma o Flash Memory 32KB o Clock speed 16MHz o Interact with base station through a 5 VDC I/O pin

16 Security Sensors Door/Window Sensor SECO-LARM SM-200Q/WH Surface Mount Magnetic Contact Switch Weight: 0.05 lbs Dimensions: 2.48" x 0.5" Compatibility: Closed circuit systems handle up to 100mA at 100 volts DC up to 50 million openings and closings operate in temperatures between -15 F and 160 F

17 Security Sensor Applications Use for the audio alarm systems Light activations when security breached, the security system will send the user an alert message Scenarios At home Away

18 Android Application First UI objective to be implemented Home Status is for basic control functions Change I/O Get status updates Users will use the application to stream audio and video to and from the home.

19 Android Programming Application is being programmed in Eclipse IDE with Android plug-ins. The application uses Apache libraries to setup network communication. The application will store the user accounts, system status changes and commands in an SQLite database. The database will need to updated from the web server periodically so all instances of the application will be congruent.

20 Web Server Code Spinneret Web Server doesn t come with any firmware. Parallax Spinneret Contest created a lot of opensource resources to draw from. A generic multi-socket web server program was modified for the purposes needed in this project. The program is written in SPIN language (similar to python), specifically made for propeller chips.

21 Application communication So far the commutation between the spinneret web server and home is a simple design. The communication transactions are always: send a request and web server sends a response. Depending on the request the web server will execute commands, and then send back a response, indicating what it did and the current state of something.

22 Streaming Data Streaming audio and data will require RTP protocols, which the spinneret web server is not programmed for and may not be powerful enough to handle. We plan to use PJSIP, a session initiation protocol, on the TI board which is open-source and allows for connections to be set up for real time streaming.

23 Web Server Security Because the web server is receiving request, there needs to be a way to identify who ever is accessing is a user of the smart home system. User names and passwords will be used An encryption method is being considered, so that user names and passwords will be more when the web server receives request.

24 Other UI s After the android UI is complete, A website UI will be created to allow the user control from any computer. If time permits and everything is smooth sailing, an iphone and Java application will be created.

25 System Integration Hair straighten appliance left on System components Security System in armed state will turn off predetermined outlets Relay on timer for that outlet Web server can notification

26 TLV320AIC3106 Audio Codec Low power of 15 mw of 48 Khz stereo audio from a 3.3 VDC power supply Two digitally controlled microphone preamps Multiple audio inputs and outputs SPI and I2C I2S, left & right justified, TDM audio serial buses Onboard DSP capability

27 Audio Codec Block Diagram

28 Automatic Gain Control (AGC) -Target Level -Attack Time -Decay Time -Noise Gate

29 Power Supply System runs on 110VAC regular outlet 9-12VDC input range Backup battery >= 250mA at 12VDC Work off of both 110VAC US outlet and Battery Efficiency >= 80% Transient Voltage Protection

30 Solar Panel Technical specs need to look at: Optimal voltage Optimal current Short circuit current Maximum wattage Fuse rating Able to charge a 12V battery set the control at 18V to 20V

31 12VDC Battery Cold Cranking Amps Cranking Amps: Height: Length: Width: Reserve Capacity: Terminal Type: Voltage: Weight: 500 Amps 625 Amps 8-11/16 in 9-5/16 in 5 in 85 min Top Terminal 12 VDC 28 Lbs

32 110VAC to 12VDC Lead Acid Battery Charger

33 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Progress

34 Work Distribution 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Daniel Luu Vu Joel

35 Budget Item Manufacturer Quantity Cost per unit Total Spinneret Webserver Parallax 1 $60.00 $60 Main Board TI/LogicPD Omap L138 1 $2000 $0 (loaner) Relay kit Sparkfun 2 $13.00 $26 GFCI outlet Leviton 2 $10 $20 Motion Sensors Parallax 1 $10 $10 Uno board Ardiuno 1 $35 $35 Door Sensor Seco 3 $6.33 $20 Circuit components NA 20 NA $5.00 Grand Total

36 Our Goal Budget Budget = $600 Current spending = $176 Spending room = $424 Percent of budget used = 29.3%

37 Expected Work/Problems Limited IO pins Audio/Video Streaming data rate Web server security Motion sensors sensitivity Back-up Power

38 Questions