Home Power Consumption Monitor CpE Daniel Allen EE Jonathan Nguyen CpE Richard Velez Motivation Goals amp Objectives Block Diagram Microcontroller How Efficient EEPROM Programming ID: 711180
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Group 32Watts The Matter?Home Power Consumption MonitorCpE: Daniel AllenEE: Jonathan NguyenCpE: Richard VelezSlide2
MotivationSlide3
Goals & ObjectivesSlide4
Block DiagramSlide5
MicrocontrollerSlide6
How Efficient?Slide7
EEPROMSlide8
Programming the MicrocontrollerSlide9
Displaying Content to UserSlide10
LCD ScreenSlide11
4 Pin FFC ConnectorSlide12
Quad 1-2 DemultiplexerSlide13
Real Time ClockSlide14
Power SourceSlide15
Power RegulationStep down from 12VDC 2A to 5V 2A and with slight modification 5V to 3.3V 2ASlide16
Power Regulation ContSlide17
Initial StartupSlide18
Program FlowSlide19
Schematic (Main Board)Slide20
Kilowatt Hour MeterSlide21
Kilowatt Hour MeterSlide22
MicrocontrollerNameFrequencyGPIO
ADC
Flash
ATMega32
16 MHz
32
8
32
KBytes
ATMega
382
20 MHz
23
8
32
KBytes
MSP430AFE
12 MHz
11
3
8
KBytes
Parallax
Propeller
80 MHz
32
0
64
KBytesSlide23
MicrocontrollerSlide24
Voltage/Current MeasurementSlide25
Voltage/Current MeasurementSlide26
Voltage, Current, Power Calculations
V
I
=Voltage across current sensor
y
= sample size (1000 in this case)
Slide27
COM-10924 Relay SPDTSlide28
GFCI OutletSlide29
KWH SchematicSlide30
Software ProcessSlide31
Radio CommunicationSlide32
Choosing A TransmitterSlide33
NameFrequencyPower OutputMax RangeRF Data Rate
Xbee
Pro 900 HP
900 MHz
250
mW
15.5
km
200 Kbps
Linx
TRM 900 NT
900 MHz
18
mW
914m
56 – 300 Kbps
Atmel AT86RF212B
769-
900 MHz
10
mW
1 km
1 Mbps
MX-05V RF (eBay)
433MHz
10mW
200m
4Kbps
Choosing A TransmitterSlide34
Xbee 802.15.4 Series 1Slide35
Specifications for LINX 900NTSlide36
InterfacingSlide37
EnvironmentsSlide38
ProductQuantityPriceBudget($1433.12)LCD Screen(1)$78.55Xbee Series 1(3)$54.00
HCPL-7800
(4)
$5
Parallax
(2)
$15.00
Voltage Regulator
(DC-DC)
(4)
$6.88
PCI Serial
Port Card
(1)
$16.95
Real Time Clock
(1)
$3.05
24LC512 EEPROM
(8)
$12.48
AC/DC Adaptor
(3)
$38.89
Misc
: Resistors, Capacitors, Diodes
~$90
PCB Fabrication
~$300
Total Spent
-----
------
~$800
Slide39
Distribution of WorkJonDanielRichardVGA DisplayXX
RF
Transmission
X
X
Circuit Breaker
X
X
kWh
Meter
X
XSlide40
Questions?