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 Primary: Provide a user friendly monitoring system which can be used to detect fires and explosions in a commercial building  Purpose: › Reduce response.

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Presentation on theme: " Primary: Provide a user friendly monitoring system which can be used to detect fires and explosions in a commercial building  Purpose: › Reduce response."— Presentation transcript:

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2  Primary: Provide a user friendly monitoring system which can be used to detect fires and explosions in a commercial building  Purpose: › Reduce response time by rescue officials › Integrate into sponsors system:  Release emergency doors which have delays

3  Provide an area of coverage of 40’ x 40’ x 15’  Detect incendiary events: › Room Temperature- Threshold set to 120˚F  Meet National Fire Protection Association(NFPA) standards “Low” under the category of heat detector. › Monitor room air for smoke  Detect explosions: › Room acoustic - Threshold set at 100dB(default)  Provide battery backup: 24 Hrs  GUI monitoring system for end user

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5  Controls – Frank Ogadah  User Interface – Tien Tran  Power Management - Alan Seims  Sensors - Andrew Farrell

6  Manufacturer : PCB Piezotronics  Model : 130D20  Type: piezoelectric  Frequency response : 20Hz – 20kHz  pSPL(linear response) – 120dB  Cost: $420.00

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8  National Semiconductor › Model: LM19 › Temperature range: -55˚C – 130˚C › Sensitivity: 11.9 mV/ ˚C › Tolerance: +/- 2.5˚C using a parabolic transfer function › Transfer Function: › Cost: $0.34

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10  Model: 276-142  Matched IR Emitter/PhotoTransistor  Emitter:  λ peak = 850nm  Phototransistor › Spectral Bandwidth = 620nm - 950nm › Peak Sensitivity = 850nm  Cost: $3.49

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12  Processing Times  Analog/Digital Converter  Memory  Power Supply  Cost › Financial › Development  Software  Learning Curve

13 MicrocontrollerATmega 328PMC9S08SH8MSP 430 Processing Time5µs2.5µs62.5 ns A/D ConverterYes Dev Board Cost$29.99$50.00$22.95 MCU CostAbout $3.00 Around $2.00 Software CostFreeRestricted/$195Restricted/$149 Power Supply1.8-5.5 V0.3-5.8 V1.8-3.6 V Bit Architecture8816 I/O Pins281615 Memory1KB/2 KB512B/8192 B256/2000B Memory TypesEEPROM/RAMFlash /RAM Final Est. Cost$29.99$245$171.95

14  ATmega 328P Final Choice  20 MIPS Throughput at 20 MHz  6 Channel 10 Bit ADC PDIP (Input)  Programmable Serial USART  13 Programmable Lines (I/O)  6 Power Channels (PWM)  On chip analog comparator  Arduino IDE, C++ compatible

15  Sensors send Analog Signals to Assigned pins  MCU will control Sensors via Digital Signals through Quad-High-Side-Switch  Sensors connected to LED to confirm activity  Communicate through FT232RL MCU ATMega328 Acoustic Sensor Smoke Sensor Thermal Sensor

16  Receive communication from MCU  Transmit data via USB to Desktop  Have TX and RX LED to verify communication taking place CPU (GUI) FT232RL CPU (GUI) RS232 USB (Optional)

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19  Used Arduino 0015 IDE  Program input and output pins  Program Function to collect & Display Analog Data  Control Function to Control Sensors  Function to sound an Alarm or buzzer for event or sensor malfunction

20  Log-in system  Database management  Alert System  Monitor Safety Device  System Log

21  GUI (Graphical User Interface), for easy user interaction  Language C# › Object Oriented programming  IDE – Microsoft Visual Studio 2008 › Provides very easy GUI creation tools and environments › Cost = Free from msdn

22 Password Form Password Form Main Form Main Form Start End Verify Account Verify Account  A class per form  Password Form start/ends program  System Log updates at for each event  Verifies user has correct access to use the system  Branches to Main Form if successful

23 Main Form Main Form Alert Form Alert Form Monitor Form Monitor Form System Log Form System Log Form Emergency Contact Form Emergency Contact Form User Account Form User Account Form Add/Edit Form Add/Edit Form Add/Edit Form Add/Edit Form Admin Check Admin Check  Main form branches to 5 other forms  Monitor and Alert deals with microcontroller and outside contact  System Log is updated automatically at certain events  Admin rights determines ability to modify EContact and UserAccount data  New editing or adding new entry

24  3 Text files for storing specific system information  UserAccount.txt – Holds user account info  EContacts.txt – Hold emergency contact information  SystemLog.txt – Holds log data for specific events occurring during operation

25 File NameNameField TypeAllows Nulls UserAccount.txtLoginIDloginIDStringNo PasswordpasswordStringNo NamenameStringNo TelephonetelephoneStringNo EmailemailStringYes AdminstratoradminBooleanNo EContact.txtNamenameStringNo TelephonetelephoneStringYes EmailemailStringYes TextMessagetxtMessageBooleanNo PrioritypriorityIntNo SystemLog.txtEventIDeventIDIntNo DateTimedateTimeDatetimeNo EventInfoeventInfoStringNo

26  UserAccount.txt – 174 bytes/Entry › 20 X 174 = 3480 bytes or 3.4 kilobytes  EContacts.txt - 134 bytes/Entry › 20 X 134 = 2680 bytes or 2.62 kilobytes  SystemLog.txt – 115 bytes/Entry › (4-logs X 2-instances X 365-days) X 115 bytes = 335800 bytes or 327.9 KB or.32 MB  Cheapest and smallest HD 160 GB for $30 Newegg

27  Alert Form › Sends important messages to selected individuals › Message is dictated by user › Update log  Uses data from EContact.txt  Two forms of alert: › Email › Text messaging

28  Execution tier: › Email › Text message  Cycle through each contact entry and checks priority and executes based on priority › Priority levels: 1 - 3 Match Priority Match Priority Start Next Entry Next Entry Send Email Send Email Send Text Message Send Text Message Check if Texting Check if Texting

29  Use smtp mail server to send out email and text message  Requires an account with username and password  Demonstration: Smtp from Google using GMAIL › smtp.gmail.com, port 587

30  Monitor Form class  Connects to detection device  Turn off individual sensors or resets them  Monitors signals transferred from device  Automatically calls the alert method in Alert form class if a sensor is tripped.  Can call Alert Form manually if communication protocol fails.

31  The device requires a continuous supply of at least 24 V DC.  The system has two power sources: main power supply and battery backup. › Battery Backup provides 24-Hr run time  Power to each sensor is controlled by the Central Monitoring System.

32  Switch-mode power supply  50 kHz switching frequency  88-264 VAC/47-63 Hz input  Provides 36 VDC at 1 A  Small size (3.9” x 3.2” x 1.4”)  Cost: $19.03

33  Ensures uninterrupted power to the device for 24-Hrs.  Two PS-1221S 12 V SLA batteries in series.  2 Ah capacity  5.75” x 3.5” x.75”  1.5 lb ea.  Cost: $22.95 ea.

34  Designed specifically for Sealed Lead Acid Batteries  Programmable charge current  Used as a three level float charger  16 pin DIP IC (.785”x.3” )  Input voltage range: 6-40 V  Cost: $5.50

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36  Solid state switch compared to electro-mechanical relay.  20 lead plastic DIP  Enables the Central Monitoring System to control sensor power.  Input voltage: 8-48 V  Fully enhances N-channel MOSFET switches  Individual short circuit protection for the sensors  Cost: Free

37  Adjustable voltage through the use of an external voltage divider circuit  Output voltage: 1.2-37 V  Output current:.5 A  Cost: $.69 ea.

38 ItemSupply VoltageSupply CurrentPower Consumption MicroController5.5 V25 mA137.5 mW Comparators (3)5 V.75 mA x 3 = 2.25 mA 3.75 mW x 3 = 11.25 mW Buffers (3)5 V 1.1 mA x 3 = 3.3 mA 5.5 mW x 3 = 16.5 mW LT116124 V10.55 mA253.2 mW Thermal Sensor5.5 V10 µA55 µW Acoustic Sensor24 V4.7 mA48 mW Smoke Sensor5 V30.2 mA151 mW UC3906 and Charging Circuit 36 V 1.6 mA (standby), 550 mA (max) 57.6 mW (min), 19.8 W (max) Total = 77.61-627.61 mA Total = 675.11mW- 20.48W

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40  System Testing: › Acoustic: point charges at a distance of 15’- 40’ › Thermal Detector: use a heat gun › Smoke: Use a fire detector test spray  Battery Backup: disconnect main power and test.  Software testing: › Proper alerts were executed

41 ItemManufacturer Part #: DistributorStock #:PriceQuantity Final Price 1Pamona Electronics4969Digi-key501-1030-ND$5.391 5.39 2Vishay SemiConductors2222 097 50109Newark98K6800$0.111 0.11 3 American Power Devices1N5314Newark91B2161$6.331 6.33 4Vishay SemiConductors1N4148Newark44K0365$0.012 0.02 5Tyco Electronics2-1676913-6Newark98K3495$0.202 0.4 6TDK LambdaLS5048Newark08N3006$18.441 18.44 7United Chemi-Con ESMG500ELLR10ME1 1DNewark23K5034$0.065 0.3 8National SemiconductorLMP7709Digi-key LMP7709MT-ND $3.381 3.38 9National SemiconductorLMV7219M5/NOPBDigikey LMV7219M5CT-ND $1.531 1.53 10PCB Piezotronics130D20Sales Office $420.001 420 11Smoke Sensortbd 0 12National SemiconductorsLM19Digi-keyLM19CIZ-ND$0.341 0.34 13United Chemi-Con ESMG500ELLR10ME1 1DNewark23k5034$0.065 0.3 14National SemiconductorLMP7709Digi-key LMP7709MT-ND $3.381 3.38 15National SemiconductorLMV7219M5/NOPBDigikey LMV7219M5CT-ND $1.531 1.53 16Linear TechnologyLTC4009DigikeyLTC4009CUF#PBF-ND$3.5813.58 17PowerSonicPS-1221S Batterymart.com SLA-12V2-T$22.95245.9 18Linear TechnologyLT1161 Digikey LT1161IN#PBF-ND$3.7013.7 19ArduinoW5100SparkFunDEV-0902645.951 20ArduinoDuemilanoveSparkFunDEV-0066629.951 21Bud IndustriesBT-2742Digikey377-1548-ND59.341 22Keystone Electronics8442GDigikey8442GK-ND0.90887.264 TOTAL $627.1439657.134

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