Bonitron A\C Demand Scheduler

Alex Brown

Cory Haugh

Ajmer Dwivedi

Purpose of Project

• Create A/C demand scheduler to reduce peak demand

• Important because pricing of electricity is a function of both the amount and the peak usage

• By scheduling the largest loads in a building (the air conditioners) to never run simultaneously peak power can be greatly reduced

Previous Group’s Work

• Created schematic of outdated circuit

• Created Logic Diagram for Microcontroller

• Implemented Logic on Altera FPGA

• Made Functional Prototype

Work Required

• Fit entire circuit into previous designs box– Create custom PCB layout– Use cheap small microcontroller to replace

large FPGA board

• Reduce cost by eliminating 1000$ FPGA prototyping board

• Add additional features– LCD display for visual input and verification– Serial port to connect to computer monitoring

station

Previous Group’s Prototype

Current Status

• Met with Keith Benson to identify project specifications

• Read previous groups work and schematics to understand circuits function

• Identified DigiKey part numbers and pricing for all currently used parts

• Identified replacement microcontroller to replace FPGA board

Parts ListPart Name Manufacturer Name Digikey Name New? Total Unit Cost 1 Board Cost 4 Board Cost Description

Power Conversion:D1 1N4003-E3/54 1N4003-E3/54GICT-ND N $0.00 $0.00 1A 200V Diode (10 part min)D2 1N4003-E3/54 1N4003-E3/54GICT-ND N $0.00 $0.00 1A 200V Diode (10 part min)D3 1N4003-E3/54 1N4003-E3/54GICT-ND N $0.00 $0.00 1A 200V Diode (10 part min)D4 1N4003-E3/54 1N4003-E3/54GICT-ND N 4 $0.07 $0.28 $1.12 1A 200V Diode (10 part min)F1 283-2009-ND 283-2621-ND Y 1 $1.17 $1.17 $4.68 250mA Fuse

FH1 01020071H F040-ND Y 2 $0.15 $0.30 $1.20 6.35mm Fuse Clip PCB Mount (10 min)IC1 LM7805CT LM7805CT-ND N 1 $0.72 $0.72 $2.88 3 Terminal Voltage RegulatorX1 DST-4-24 595-1213-ND N 1 $10.92 $10.92 $43.68 120V-12V Transformer 6VAC1 EEU-FC1V392 P11249-ND Y 1 $4.77 $4.77 $19.08 3900uF Capacitor 35V WithstandC2 C315C103M1U5TA 399-4149-ND N $0.00 $0.00 10nF Ceramic Capacitor 25V WithstandC4 C315C103M1U5TA 399-4149-ND N 2 $0.17 $0.34 $1.36 10nF Ceramic Capacitor 25V WithstandC3 TAP226K025SCS 478-1877-ND Y 1 $2.45 $2.45 $9.80 22uF Tantalum Capacitor 25VC5 TAP224K035SCS 478-1865-ND Y 1 $0.46 $0.46 $1.84 .22uF Tantalum Capacitor 25V

TB1-F 2-316132-2 A29631-ND Y 1 $1.83 $1.83 $7.32 5 Pin Connector (Female)TB1-M 1-178128-5 A29363-ND Y 1 $1.80 $1.80 $7.20 5 Pin Connector (Male)HS1 507302B00000G HS115-ND Y 1 $0.40 $0.40 $1.60 Heat Sink TO-220 Package

Sub Total: $25.44 $101.76

Signal Conversion:TB2 999480 281-1453-ND Y $0.00 $0.00 8 Pin Wire ConnectorTB3 999480 281-1453-ND Y 2 $3.28 $6.56 $26.24 8 Pin Wire ConnectorR11 5033ED82R50F12AF5 PPC82.5XCT-ND Y $0.00 $0.00 82.5Ω Metal Film Resistor 0.5W (5 part min)R12 5033ED82R50F12AF5 PPC82.5XCT-ND Y 2 $0.22 $0.44 $1.76 82.5Ω Metal Film Resistor 0.5W (5 part min)R13 CFR-25JB-3K9 3.9KQBK-ND Y $0.00 $0.00 3.9kΩ Carbon Film Resistor (5 part min)R14 CFR-25JB-3K9 3.9KQBK-ND Y $0.00 $0.00 3.9kΩ Carbon Film Resistor (5 part min)R17 CFR-25JB-3K9 3.9KQBK-ND Y $0.00 $0.00 3.9kΩ Carbon Film Resistor (5 part min)R18 CFR-25JB-3K9 3.9KQBK-ND Y $0.00 $0.00 3.9kΩ Carbon Film Resistor (5 part min)R21 CFR-25JB-3K9 3.9KQBK-ND Y $0.00 $0.00 3.9kΩ Carbon Film Resistor (5 part min)R22 CFR-25JB-3K9 3.9KQBK-ND Y $0.00 $0.00 3.9kΩ Carbon Film Resistor (5 part min)R25 CFR-25JB-3K9 3.9KQBK-ND Y $0.00 $0.00 3.9kΩ Carbon Film Resistor (5 part min)R26 CFR-25JB-3K9 3.9KQBK-ND Y 8 $0.05 $0.40 $1.60 3.9kΩ Carbon Film Resistor (5 part min)R15 CFR-25JB-3K3 3.3KQBK-ND Y $0.00 $0.00 3.3kΩ Carbon Film Resistor (5 part min)R19 CFR-25JB-3K3 3.3KQBK-ND Y $0.00 $0.00 3.3kΩ Carbon Film Resistor (5 part min)R23 CFR-25JB-3K3 3.3KQBK-ND Y $0.00 $0.00 3.3kΩ Carbon Film Resistor (5 part min)R27 CFR-25JB-3K3 3.3KQBK-ND Y 4 $0.05 $0.20 $0.80 3.3kΩ Carbon Film Resistor (5 part min)R16 CFR-25JB-470R 470QBK-ND Y $0.00 $0.00 470Ω Carbon Film Resistor (5 part min)R20 CFR-25JB-470R 470QBK-ND Y $0.00 $0.00 470Ω Carbon Film Resistor (5 part min)R24 CFR-25JB-470R 470QBK-ND Y $0.00 $0.00 470Ω Carbon Film Resistor (5 part min)R28 CFR-25JB-470R 470QBK-ND Y $0.00 $0.00 470Ω Carbon Film Resistor (5 part min)R29 CFR-25JB-470R 470QBK-ND Y $0.00 $0.00 470Ω Carbon Film Resistor (5 part min)R30 CFR-25JB-470R 470QBK-ND Y 6 $0.05 $0.30 $1.20 470Ω Carbon Film Resistor (5 part min)C8 TAP225K025SCS 478-1870-ND Y $0.00 $0.00 2.2uF Tantalum Capacitor 25VC9 TAP225K025SCS 478-1870-ND Y $0.00 $0.00 2.2uF Tantalum Capacitor 25VC18 TAP225K025SCS 478-1870-ND Y $0.00 $0.00 2.2uF Tantalum Capacitor 25VC19 TAP225K025SCS 478-1870-ND Y 4 $0.46 $1.84 $7.36 2.2uF Tantalum Capacitor 25VC10 2222 370 11224 BC1628-ND N $0.00 $0.00 .22uF Metalised Film Cap. 63V (10 part min)C12 2222 370 11224 BC1628-ND N $0.00 $0.00 .22uF Metalised Film Cap. 63V (10 part min)C14 2222 370 11224 BC1628-ND N $0.00 $0.00 .22uF Metalised Film Cap. 63V (10 part min)C16 2222 370 11224 BC1628-ND N 4 $0.21 $0.84 $3.36 .22uF Metalised Film Cap. 63V (10 part min)C11 C315C103M1U5TA 399-4149-ND N $0.00 $0.00 10nF Ceramic Capacitor 25V WithstandC13 C315C103M1U5TA 399-4149-ND N $0.00 $0.00 10nF Ceramic Capacitor 25V WithstandC15 C315C103M1U5TA 399-4149-ND N $0.00 $0.00 10nF Ceramic Capacitor 25V WithstandC17 C315C103M1U5TA 399-4149-ND N 4 $0.17 $0.68 $2.72 10nF Ceramic Capacitor 25V WithstandD5 DB104-BP DB104-BPMS-ND N $0.00 $0.00 Glass Passivated Bridge Rectifier 1AD7 DB104-BP DB104-BPMS-ND N $0.00 $0.00 Glass Passivated Bridge Rectifier 1AD9 DB104-BP DB104-BPMS-ND N $0.00 $0.00 Glass Passivated Bridge Rectifier 1AD11 DB104-BP DB104-BPMS-ND N 4 $0.60 $2.40 $9.60 Glass Passivated Bridge Rectifier 1AD6 SR105-T SR105DICT-ND Y $0.00 $0.00 1A 50V DiodeD8 SR105-T SR105DICT-ND Y $0.00 $0.00 1A 50V DiodeD10 SR105-T SR105DICT-ND Y $0.00 $0.00 1A 50V DiodeD12 SR105-T SR105DICT-ND Y 4 $0.52 $2.08 $8.32 1A 50V DiodeIC5 HCPL-2211-000E 516-1537-5-ND Y $0.00 $0.00 Logic Output OptocouplerIC6 HCPL-2211-000E 516-1537-5-ND Y $0.00 $0.00 Logic Output OptocouplerIC7 HCPL-2211-000E 516-1537-5-ND Y $0.00 $0.00 Logic Output OptocouplerIC8 HCPL-2211-000E 516-1537-5-ND Y 4 $2.75 $11.00 $44.00 Logic Output OptocouplerK1 RT424012 PB967-ND Y $0.00 $0.00 Relay 240V 8AK2 RT424012 PB967-ND Y 2 $2.76 $5.52 $22.08 Relay 240V 8AQ1 2N3904-AP 2N3904-APCT-ND Y $0.00 $0.00 General Purpose NPN Transistor (10 part min)Q2 2N3904-AP 2N3904-APCT-ND Y $0.00 $0.00 General Purpose NPN Transistor (10 part min)Q3 2N3904-AP 2N3904-APCT-ND Y $0.00 $0.00 General Purpose NPN Transistor (10 part min)Q4 2N3904-AP 2N3904-APCT-ND Y 4 0.1 $0.40 $1.60 General Purpose NPN Transistor (10 part min)

VR1 ERZ-V14D221 P7218-ND Y $0.00 $0.00 MOV Varistor 180V DC WithstandVR2 ERZ-V14D221 P7218-ND Y $0.00 $0.00 MOV Varistor 180V DC WithstandVR3 ERZ-V14D221 P7218-ND Y $0.00 $0.00 MOV Varistor 180V DC WithstandVR4 ERZ-V14D221 P7218-ND Y 4 0.49 $1.96 $7.84 MOV Varistor 180V DC WithstandIC5H 08-3518-10 A400-ND Y $0.00 $0.00 8 Pin DIP Standoff 2.54mm x 7.62mmIC6H 08-3518-10 A400-ND Y $0.00 $0.00 8 Pin DIP Standoff 2.54mm x 7.62mmIC7H 08-3518-10 A400-ND Y $0.00 $0.00 8 Pin DIP Standoff 2.54mm x 7.62mmIC8H 08-3518-10 A400-ND Y 4 0.59 $2.36 $9.44 8 Pin DIP Standoff 2.54mm x 7.62mm

Sub Total: $36.98 $147.92

Microcontroller Interface:H1 AWH16G-0232-T-R HVL16H-ND Y 1 1.62 $1.62 $6.48 16 Pin Ribbon Cable Male ConnectorIC4 ULN2803A 497-2356-5-ND Y 1 1.05 $1.05 $4.20 8 Darlington Array 18 Pin DIP

IC4H 18-3518-10 A403AE-ND Y 1 1.1 $1.10 $4.40 18 Pin DIP Standoff 2.54mm x 7.62mm$0.00 $0.00$0.00 $0.00$0.00 $0.00$0.00 $0.00

SIP1 = 2.2k pull UP resistors $0.00 $0.00$0.00 $0.00$0.00 $0.00$0.00 $0.00

$3.77 $15.08

PIC16F747

• Cheap: 3$

• 30+ I/O pins

• Built in Timers

• Built in serial communication

• Flash programmable (program still in memory even if power lost)

• Can be programmed in C++

PIC16747 Cont..

Future Work

• Create final specifications for project

• Design Circuit in MultiSim and Utiliboard

• Acquire parts from Bonitron and DigiKey

• Begin learning microcontrollers programming

• Begin testing circuit components in breadboard

• Assemble final circuit

Schedule