Web Base Home Monitoring System

Transcription

1 Web Base Home Monitoring System Group B: Jon Carver Jason Heintz Dennis Seda Sean Willis Term: Fall 2010

2 Agenda Goals and Objectives Specifications Implementation and Design Test Plan Successes Design Difficulties Budget Immediate Plans

3 Project Goals Developing a real time home monitoring system Prevent Burglary and Theft Give the home owner complete control over the system Make the home more energy efficient Prevent home water damage

4 System Design Diagram User Interface Server FPGA Board Window Sensors Door Lock

5 Significant Component & Design Decisions FPGA vs. Microcontroller LFXP2-8E-6 FT256 C USB vs. Ethernet Connect to computer vs. router Programming Language C# vs. JAVA

6 Project - Objectives System shall regulate the temperature inside the home by automatically operating the window System shall monitor humidity outside to prevent water invasion through an open window System shall provide the ability to view the current status of the home remotely System shall provide the ability to open and close the window remotely System shall provide the ability to unlock and lock the door remotely

7 Door Lock Reqs. & Objectives The door lock shall be able to be opened and closed via the web interface. The door lock shall have two solenoids; one to unlock the door and one to lock the door. The door lock shall receive all power from the CCA. The door lock shall open or close within 10ms upon receiving a signal The door lock shall not require more than 12 volts for operation.

8 Temperature Sensor Reqs. & Objectives Temperature shall be measured inside and outside of the home. The window shall open if both are true: Inside temp 75 F Outside temp (Inside temp - 5 F) The window shall close if any of the following are true: Inside temp 60 F Inside temp 80 F Outside temp Inside temp Temperature shall be taken at intervals of 30 sec. Temperature readings shall be within 2 F accuracy.

9 Humidity Sensor Reqs. & Objectives Humidity shall be measured outside of the home. The window shall close if the humidity level is greater than 80%. Humidity readings shall be within 2% accuracy.

10 Window Reqs. & Objectives The window shall be able to be opened or closed via the web interface. The window shall open or close in less than 15 seconds. Window Motor Specifications < 2 inches in diameter Requires no more than 12 volts High torque with a low rate of speed

11 Website Objectives Web UI shall require a unique username and password Web UI shall display the temperature inside and outside of the home Web UI shall display the humidity outside of the home Web UI shall provide the ability to open and close the window Web UI shall provide the ability to open and lock the door

12 CCA Reqs. & Objectives Circuit Card Assembly (CCA) will be a two layer board Bottom layer will be a ground layer CCA will use 1 oz copper for traces CCA will use 10 oz copper for ground plane CCA will have a DB-9 for communication to the sensors CCA will have a DB-15 for power and communication to the window

13 Power Reqs. & Objectives System shall require one power input. System shall receive power from standard 120V wall power System shall regulate necessary voltages internally

14 Project Design Approach

15 Door Lock - Implementation Door Lock will be driven locked or unlocked by two different solenoids Door Wall Door Wall Fully Locked Solenoid Solenoid Door Wall Wall Door Fully Unocked Solenoid Solenoid

16 Window Motor - Implementation

17 Temperature Sensor- Implementation DS1822 Digital Thermometer 8 pin integrated circuit chip 9-12 bit temperature measurement ± 2 C Accuracy Parasitic Power 64 bit ROM Serial Code # Output Bits Temperature Resolution ( C)

18 Humidity Sensor - Implementation SENSIRION SHT11 - Humidity Sensor 2 Wire silicon chip ± 3% RH Accuracy 8-12 bit output Non-linearity Compensation RH linear = c 1 + (c 2 * SO RH ) + (c 3 * SO RH2 ) (%RH) SO RH C1 C2 C3 12 bit E-6 8 bit E-4

19 Window Sensor - Implementation ASSEMTECH - PSA240/30 Reed proximity switch 2 components Switch Magnet Operating distance in Contact Form Switching Current Operating Distance Normally Open 0.5 A 8 mm (0.315 in)

20 Web Server - Implementation Initial Implementation Apache Tomcat Java Servlets Java Server Pages SSL User Accounts Current Implementation Internet Information Services (ISS) HTML ASP.NET SSL User Accounts

21 Web UI - Design Window Status: Open Inside Temp: 80 F Outside Temp: 70 F Open Close Door Door Status: Closed Lock Status: Unlocked Unlock Lock

22 Web UI - Implementation Classes Methods Instance Fields Private/Public Home Check Temperature Private Check Humidity Private Check Door Status Check Door Lock Status Check Window Status Highlight Windows Highlight Doors Door Click Window Click Send Information to circuit Receive information from circuit Private Private Private Private Private Private Private Private Private Humidity: Double Doors[ ]: Door Array Windows[ ]: Window Array Private Private Private Door Door Public Lock Door Unlock Door Closed: Boolean Locked: Boolean Public Public Public Public Window Window Public Close Window Public Open Window Closed: Boolean Public Public Temp: Double Public Temperature Temperature Public Inside: Double Outside: Double Public Public

23 Power Implementation Major component Power Requirements Component Voltage Current FPGA 3.3V 27.4mA FPGA 1.2V 76.8mA ADC (x2) 5V 50mA (x2 = 100mA) USB Interface 3.3V 50mA Level Translator 3.3V 25mA Level Translator 12V 50mA

24 Power - Implementation To Wall Power 120VAC RTN Neutral Transformer DB9 Female DB9 Male 25.2V 12V DC#1 Regulator Circuit 25.2V Rtn 12V DC#2 Regulator Circuit 12VDC #1 GND To Solenoid Circuitry 5V Regulator Circuit 5VDC GND 3.3V Regulator Circuit 3.3VDC GND 1.2V Regulator Circuit 1.2VDC GND

25 Power Implementation. Power will be provided by buck voltage regulators 12V Regulator 180uF Vin 25.2VDC On/Off 33uH 15uF 15uF 470nF 180uF Vout 12VDC

26 Solenoid / Window Motor Drive Circuit 12VDC #2 5ohm 20W Drive Unlock To FPGA 12VDC #2 5ohm 20W Drive Lock To Solenoids And Window Motors DB-15 Female DB-15 Male 3.3V to 12V level translator 12VDC #2 464ohm 1W Drive Window Up 20AWG Wire 12VDC #2 Drive Window Down 464ohm 1W

27 Hardware Test Plan Power Correct Voltage and Amps CCA Component communication Door Lock Lock & Unlock Window Motor Open & Closed Sensors Temperature Humidity Window Sensor

28 Software Test Plan Web Server Server and CCA communication Web UI Functionality and ergonomics

29 Project Successes Ordered FPGA Sensors Power Components Lock Started Web UI coding Verilog coding Completed Web Server

30 Project Difficulties and Risks Mechanics of the Window component. Lining up solenoid with door lock Communication link between FPGA and program Programming Language vs. Web Server

31 Project Budget Parts Budgeted Cost Door Lock $20.00 Solenoid $20.00 Temperature Sensor $10.00 Humidity Sensor $10.00 Window Sensor $10.00 Window Motor $50.00 Window Push Button $10.00 Circuit card assembly (FPGA) $25.00 Printed Circuit Board $50.00 ADC $5.00 Oscillator $5.00 Power $20.00 Level Translator $5.00 USB Chip $10.00 Server - Hardware Personal Computer Server - Software Free Open Source Building Materials $50.00 Total $300.00

32 Current Progress Web Server 100% Web UI 15% Temp Sensor 25% Hum. Sensor 25% Window Sensor 25% Door Lock 10% CCA 20%

33 Immediate Plans Finish ordering all necessary parts Integrate components onto CCA Board Finish coding the Website Finish verilog coding Establish communication between website and CCA