Transcript Oral and Poster Presentation "An Expandable Electric Energy

An Expandable Electric
Energy Monitoring System
for Home Appliances
Problem Description
Monthly Home Power Bill
Lump Sum Total
Implementation and Testing
Meter Measurement Results
Watt CFL
1,146 kwh
Nick Mahoney
Travis Kinney
Andrew Adams
Source: Rocky Mountain Power
Design
Power is measured in watts, but energy is
measured in kilowatt-hours (kwh). Most of the
cost of your power bill comes from the total
number of kwh used. Therefore, devices which
consume the most power may not necessarily
consume the most energy.
Base Circuit Diagram
Meter Circuit Diagram
3V
ANT1
Transceiver Test Results
U2
TRM-418-LT
ANT P1
GND P2
NC P3
RSSI P4
AREF P5
ANLG P6
R1 1k
P12 LADJ
P11 VCC
P10 GND
P9 PDN
P8 T R
P7 DATA
INITIAL TESTING
Transceiver 1
01
3V
3V
3V
3V
3V
3V
R14
1k
How We Use Energy In Our Homes
R15
1k
R2
1k
R16
1k
C1
22pF
C2
22pF
3V
Other
8%
Space Heating
31%
R12
1k
R11
1k
P28 PC5
P27 PC4
P26 PC3
P25 PC2
P24 PC1
P23 PC0
P22 GND
P21 AREF
P20 AVCC
P19 PB5
P18 PB4
P17 PB3
P16 PB2
P15 PB1
R17
100
R18
100
R5
10k
D3
LED1
Transmitting
Receiving
Working?
R19
100
R6
10k
Q2
NPN
Q1
NPN
R4
1k
R7
1k
R3
1k
R8
1k
R9
1k
U3
MAX232A
.1uF
C1p P1
V P2
C1m P3
C2p P4
C2 P5
V P6
T2out P7
R2IN P8
+
Appliances
9%
+
.1uF
+
.1uF
C6
1uF
P16 Vcc
P15 GND
P14 T1out
P13 R1IN
P12 R1out
P11 T1IN
P10 T2IN
P9 R2out
YES
LOOKING FOR METER SIGNATURE
Transceiver 1
Transceiver 2
Transmitting
0011_0101
Receiving
0011_0101
Working?
YES
NO
R10
1k
5V
5V
01
YES
Q3
NPN
S1
+
Refrigeration
8%
R13
1k
D2
LED1
U1
ATMega168
PC6 P1
PD0 P2
PD1 P3
PD2 P4
PD3 P5
PD4 P6
VCC P7
GND P8
PB6 P9
PB7 P10
PD5 P11
PD6 P12
PD7 P13
PB0 P14
1.000MHZ
Percentage of Energy Consumed
D1
LED1
Transceiver 2
J1
Prototype Budget
Meter and Base
Program Flow Diagrams
Computer &
Electronics
Lighting
9%
11%
Revised
Water Heating
12%
Space Cooling
12%
Meter
Base
Meter
Start
Source: 2007 Buildings Energy Data Book, Table 4.2.1., 2005 energy cost data.
Base
Start
Initialize
Many of the devices which consume the most
energy plug into a standard wall outlet.
Initialize
Ports and
inputs
Receive
Meter Data at
lower Baud
Rate
Transmit
Characters To
Transceiver
followed by a
comma
Wait for
rising edge
from power
input
Transmit
Received
data at high
baud rate to
computer
Reset Timer
And wait for
second rising
edge
Proposed Solution
Take timer
values and
calculate
power
Meter: The meter measures power and sends the
data wirelessly to the base.
Convert data
to ascii
characters
Original
Meter
Source:http://pro.corbis.com
Set
Number
ISR
Initialize ports
Read Unique Number
Set Transceiver to
Input
Take Data Sample
Receive Number
(1 min timeout?)
Store average of
~1 min of data into
‘new’ data
Set Transceiver to
Output and Send
Confirmation Code
Check Request
Signal and Set
Transceiver to
Output
Source: http://energyboomer.typepad.com
Source: http://student.britannica.com/ebi/art72308
Initialize Ports
Set Transceiver to
Output
Set Current Meter
Number to
beginning of list
Transmit Unique
Number and New
Data Code
Set Current Meter
Number to Next on
List. If End, set to
beginning.
Set Transceiver to
input & Collect
data
6
3
3
1
2
1
1
1
2
1
1
5
1
2
2
4
1
1
1
1
1
1
2
1
1
1
2
1
2
$0.66
$0.27
$0.27
$3.03
$34.3
$2.34
$7.53
$0.17
$0.78
$4.08
0.96
$0.3
$4.99
$0.9
$0.96
$0.24
$6.89
$0.63
$0.03
$0.02
$1.09
$0.19
$4.06
$10.92
$0.47
$0.39
$24.62
$0.87
$50.00
Part Count
50
Total Cost
$161.96
Acknowledgements
Receive
Confirmation
Code?
Store Data w/
proper info
Yes
Put New Meter
Number on List of
Meters
Old
Send all ‘Old’ Data
(Basically Resend)
Set Transceiver to
input
$0.11
$0.09
$0.09
$3.03
$17.15
$2.34
$7.53
$0.17
$0.39
$4.08
0.96
$0.06
$4.99
$0.45
$0.48
$0.06
$6.89
$0.63
$0.03
$0.02
$1.09
$0.19
$2.03
$10.92
$0.47
$0.39
$12.31
$0.87
$25
Set Transceiver to
input
Yes
Return to Main
Return to main
2N3904FS-ND
604-WP7104SRC/D
604-WP7104SGD
ATTINY861V-10PU-ND
TRM-418-LT-ND
MCP3905
TE1020-ND
CMF10.0HFCT-ND
815-ABL-10-B2
556-ATMEGA168P-20PU
MAX232A
140-XRL100V0.1-RC
N82E16812123083
LM7805CT-ND
LM317TFS-ND
140-50N5-220J-TB-RC
552-PLA05A-090-R
163-7620-E
647-UVR1E101MED1TD
647-UVR1V100MDD1TA
806-K22X-E9P-N-99
576-0217001.MXP
ANT-418-PW-LP-ND
546-229E10
512-3N246
815-ABL-3.579545B2
1591DTCL
693-4300.0701
No
Is Data Valid?
Delete Old Data,
Set New Data as
old
Part Cost
Send out Unique
Number on
Transciver
Send ‘Unmarked’
Data
No
Required
Set Transceiver to
output
Yes
New
Cost
Read in Already
Used Numbers
from Memory, Find
next unused
number in list
Read Available
Meter Numbers
from Memory
Set Transceiver to
Input and Return to
Main Program
Which Data?
Measure each device individually and collect
energy measurements to be stored and utilized
by a personal computer.
Set Meter
Number ISR
Main
Read Signal’s
Unique Number
Does Unique
Number Match
Meter’s Number?
NPN Transistor
RED LEDs
Green LEDs
uC for Meters
RF Transceiver
Power Measurement Chip
Current Transformer
CT Load Resistor(10ohm)
10MHz uC Crystal
uC for Base
RS232 Level Converter
.1uF Capicitors
Serial Cable
5v Vreg
3v Vreg
22pF Caps for Crystals
Plugin AC Adapter(9v)
Barrel Plug Adapter
100uF caps for power supply
10uF caps for power supply
DB09 Connector
Fuse
Antenna
Power Transformer
Bridge Rectifiers
3.579545Mhz Crystal
Cases
Power Outlet (Nema 5-15R)
PCB
Part Number
Base
Main
Program
Input
Signal
ISR
Part Description
No
Set to Transmit
and Resend
Number with Old
Data Code
Base: The base receives data from the meter and
sends that data to a computer.
Advised by Dr. Stanislaw Legowski
Department of Electrical and Computer Engineering
University of Wyoming
Thank you: Dr. Legowski, Dr. Ula, Vic Bershinsky and
George Janack