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S.W.A.T (Security Watching All the Time) Jeff Shin Tyler Stubbs Paul Kasemir Pavel Mayyak
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Overview Project Objectives and Purpose Approach Sub-systems Division of Labor Schedule Budget Project Modifications
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Project Statement Home Security and Safety Detection of intruders Intruder prevention by alarms and lights Recording of home activity Generate reports (logs) Allow remote access
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System Diagram
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Modularity and Daughterboards Ethernet: Allows remote access to system Zigbee Wireless: Allows wireless communication with the sensors SD Card: Stores sensor data
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Control System Diagram
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Control System Motherboard Flash/EEPROM: Memory to store the data from sensors. (1 Meg each) LEDs: 8 LEDs, used primarily for debugging purposes RS232 Shifter: Interfaces to the serial port on the Visual Station DB9 Connector: Serial cable to the Visual Station Power: One 6 Volt DC source powering board Program Header: Allows STK500 to program the microcontroller External IO Header: Controls alarm triggering
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Control System Schematic
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Control Board
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Control System Main control processor: ATMega128 RF link: AT86RF230 MRF24J40 Internet: ENC28J60 Data Storage: SD cards Alarm Trigger: Standard IO Serial link: MAX3232 Programming: C/C++ using Eclipse
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Sensor System Diagram
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Sensor Motherboard LEDs: 8 LEDs, used primarily for debugging purposes Power: One 6 Volt DC source powering board Program Header: Allows STK500 to program the microcontroller External IO Header:Triggers alarm
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Sensor Daughterboards Zigbee Wireless: Allows wireless communication with the sensors PIR325: Infared motion sensor AH180: Magnetic sensor for Doors Glass Break Sensor: Tests integrity of Glass MAX6607: Temperature sensor
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Sensor Schematic
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Sensor Board
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Sensors Simple control processor: ATMega88/168 RF link: ZigBee Wireless AT86RF230 MRF24J40 Magnetic sensors: AH180 Glass Integrity: TBD Temperature: MAX6607 Infrared Sensor: PIR325
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Wireless/Ethernet
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Visual Station Contained within a laptop Continuously updating sensor values Graphically displays information Monitor and control system settings
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Alarms Lights Noise (siren) Email
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Power Sources All parts of the system will be powered by AC All digital components and chips will run at 3.3V Parts requiring ramped up voltage will utilize boost converter
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Programming Environment Eclipse C or C++ WinAVR Programmer STK500 AVR Studio 4
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Division of Labor Programming: Pavel and Paul PCB Designs: Paul Analog Circuitry: Jeff and Tyler Sensor Construction and Implementation: Jeff and Tyler Documentation and Testing: All
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Gantt Chart
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Milestone Objectives Milestone 1 Have control and sensor boards soldered Have basic code executing Have communication to the PC on serial Hope to have wireless link established Get the self built IR sensor working
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Milestone Objectives Milestone 2 Have all hardware tested and working Have a visual station program running Have communications for wireless and serial seamlessly working Have remote login capability
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Budget STK 500 Programmer ATMega128 ATMega 8 ZigBee Chips Temperature Sensor IR Sensor Components Magnetic Sensor Broken Glass Sensor PCB Passives (Capacitors, Resistors, Inductors) Connectors/Jacks Power Supplies Alarm Lights Alarm Siren Buffer Budget TOTAL $85 Sampled $24 $5 $90 $200 $60 $25 $35 $15 $10 $450 $850
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Project Modifications 1. Main types of sensing are daughter boards rather than all on one motherboard *Easier to break down piece by piece *Easier to debug 2. We have purchased power supplies rather than building them *For convenience *Time constraints *New allowance in budget
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3. Ethernet is on a separate daughter board *Allows for easier debugging and block break down 4. Looking into two different types of Zigbee wireless chips *Allows us to test to see which interfaces better Project Modifications
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Questions?? Security Watching All the Time
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