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Jeffrey Kemp Matthew Prokop Michael Sanfilippo
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Project Overview Project Overview Similar Products Similar Products User Interface User Interface System Architecture System Architecture Wireless Modules Wireless Modules Testing and Integration Testing and Integration Problem Areas Problem Areas Multidisciplinary Aspects Multidisciplinary Aspects Cost Cost
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Develop sensor network to monitor a home. ◦ Highly customizable ◦ Easily configurable ◦ User friendly Will be able to monitor many areas of a home wirelessly ◦ Temperature ◦ Open/close doors ◦ Ambient light ◦ Motion System connects to internet ◦ Allows for external monitoring ◦ Provide alerts via SMS and IM
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Home Heartbeat ◦ Comes in three different packages Basic ($225) Whole ($625) Water($792) ◦ Extra sensors available for custom needs ◦ Need to pay for alerts ◦ Need broadband internet for some alerts and remote access ◦ Have to pay for Eaton broadband service (not internet)
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TattleTale Alarm ◦ Comes with one base station and remote. Sensors sold separately Price varies depending on location. Roughly $850 Sensor price varies Most sensors about $150 Some indoor sensors are about $70 Some outdoor sensors are about $400 ◦ Portable alarm system Designed for construction sites Some use for home monitoring
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Main reasons why this project is not like all the other home monitoring systems ◦ Highly configurable and robust user interface ◦ Easily extendable through standard interface protocol
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There are two main interfaces for the user ◦ Touch screen display on base station ◦ Web interface accessible by any internet ready device Full control is granted at touch screen Limited control is available on web interface to provide security for the monitored area Notifications are used to alert the proper people
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Types of notifications 1.Instant Message (AIM) 2.Telephone Call 3.Audible Alarm 4.Log event in data log 5.Trigger actuator to move to a predefine position
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Billy
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Flex PHP Database
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Database Sensor Table Sensor IDTypeStatusTimestampNickname Event Table Event IDSensor TypeSensor IDTriggerPoll TimerAction IDAction Parameter Log Event NumberSensor IDTimestampMessage
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System Controller (C#) ◦ Decodes information sent from sensor and takes appropriate action ◦ Sends commands to control modules ◦ Reads user events from database ◦ Monitors Events ◦ Sends commands to alert system ◦ Logs data in database
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Each sensor will be powered by a 3.6V Lithium Ion battery Each actuator and control module will be powered by a 9v AC/DC converter and a linear 3.3V regulator Sensor and actuator module will consist of a Xbee module, PIC microcontroller, a power source, and associated sensor. Sensors have a 133 foot range indoors
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Wireless Contact Sensor
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Wireless Ambient Light Sensor Vo
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Wireless PIR Sensor
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Wireless Temperature Sensor Ta = Ambient Temperature Vout = sensor output voltage V0c = Sensor output Voltage at 0 deg C = 500mV Tc = Temperature coefficient = 10mV/degC
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Wireless General Purpose I/O
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Wireless Servo Module
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Wireless Thermostat
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Wireless Base Station
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Base Station Testing ◦ Database reporting ◦ Adding/Removing Modules ◦ Configuring events/actions ◦ User interface elements Web Interface / PDA Interface ◦ Monitoring home screen modules ◦ Functionality XBee ◦ Wireless communication ◦ Adding / Removing nodes ◦ Addressing nodes ◦ Sensor to XBee communication User Alerts ◦ IM Alerts ◦ SMS Alerts ◦ Audible Alarm ◦ Data Logging ◦ Servo/Actuator Movement
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Integration Testing ◦ Test communication between modules Adding a module Removing a module ◦ Test event and alert system Configure events to deliberately cause an alert System Testing ◦ Setup system in mock home ◦ Ask sample user to use system Add or remove modules Configure events and alerts
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Hub and Spoke Strategy Integration Strategy ◦ Allows for parts to be integrated at separate times ◦ Base station is the Hub ◦ Each system will read and modify data on base station ◦ Don’t have to worry about talking to other systems
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Web/Database Programming ◦ New topic/languages to group Web interface for PDA Only have 5 wireless modules – planned on swapping out wireless transceivers with each sensor module.
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Computer Engineering and Computer Science ◦ Programming of Microcontroller ◦ Serial Communications Electrical Engineering ◦ Wireless Sensors ◦ Sensor interfacing Information Technology ◦ Touch Interface ◦ Web Interface Mechanical Engineering ◦ Motor/Servo Controls ◦ Thermostat Controls Systems Engineering ◦ Planning ◦ Integration
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ComponentRetailerRetail CostQuantityTotal Cost to Students Cost to CE department X86 PCNewegg.com$5001Already Owned Fujitsu 2000LCD 12” Touch ScreenFujitsu.com$3001Donated 0 Zigbee wireless module (XBee)Digi-key$2150 $105 PDA HP RIT $1001Already Owned 0 Cisco Wireless cardeBay$201 0 Parallax PIR (motion) sensorDigikey$1020 $20 Bipolar Hall effect Sensor (Contact sensor) Digikey$0.931 0 Temperature SensorDigi-Key$0.362$0.72 0 ServosRIT$201Free 0 Break away header.1” pitch$2.530 $7.5 Breakout board for XBee module$2.9550 $14.75 3-5V RS232 Interface$2.5540 $10.20 2mm 10 pin socket$1.00100 $10.00 Low dropout 3.3V regulator$0.7560 $4.50 DTMF chipJameco$5.7520 $11.5 OscillatorJameco$0.430 $1.20 DSUB 9 connectorJameco$0.6930 $2.07 TBDTotal Cost:$21.65 186.72
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