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Home Energy Monitor

PART NO.

This project will allow the monitoring of AC voltage and current for an entire home. The data collected is then used in calculating Real

Time KW usage, KHW, RMS AC Voltage and Current, and power factor.

Enter the cost per KW from your electric bill to check if the power company is accurately measuring your POWER USAGE! It's very

interesting to visualize how appliances operate and can detect if one needs to be replaced or not working properly.

This is a great project to learn more about your power usage in the home and what appliances or people in you household that use

the most electricity.

Time Required: 12 hours depending on experience

Experience Level: Intermediate

Required tools and parts:

Can use the custom PCB and only have to solder components to sensor board

or can use a protoboard and wire wrap components.

Also Will Need :

PIC16F88 firmware to operate sensor board.

PC software to interface with sensor board.

Soldering gun: 129040 Solder:94570

screw driver, wire cutters, pliers

If not using custom PCB, Wire Wrap items needed.

Wire Wrap Tool: 2150361 Wire Wrap wire: 22631,22665

18 pin WW socket: 94482 20 pin WW socket: 38632

Protoboard,2-7/16X4: 263207

Bill of Materials:

Qty Jameco SKU Component Name

1 2124322 U3:Serial to Ethernet Gateway Module

1 312733 U1:MCU 8-Bit PIC16F88

6 690620 R1-R6:100 ohm Resistor

1 106163 U2:RS-232 interface chip

2 151116 C1-C2:0.1uF Ceramic Disc Capacitor

3 29891 C5-C7:10uF Ceramic Disc Capacitor

2 15405 C3-C4:22pf 50 Volt Ceramic Disc Capacitor

5 691104 R9, R11-R14:10K ohm Resistor

2 691500 R7-R8:470K ohm Resistor

1 691340 R10:100K ohm Resistor

1 2006713 LED3:LED Uni-Color Red 635nm 2-Pin T-1

4 697629 LED2,LED4-LED6:Uni-Color Green

1 325068 X1:20MHz Crystal

1 1940740 PS1/2:5vdc Power Supply

Power supply for HEM PCB and Serial to Ethernet Gateway Module PCB.

1 101258 PS3:12VAC power Supply

2 CT1,CT2: 0- 200 AMP CT

Non-invasive AC current sensor SCT-019 (200A max)

3 2 pin cable/connector for CT/VAC

Summary of content (15 pages)

PAGE 1
Home Energy Monitor PART NO. This project will allow the monitoring of AC voltage and current for an entire home. The data collected is then used in calculating Real Time KW usage, KHW, RMS AC Voltage and Current, and power factor. Enter the cost per KW from your electric bill to check if the power company is accurately measuring your POWER USAGE! It's very interesting to visualize how appliances operate and can detect if one needs to be replaced or not working properly.
PAGE 2
-PIN CONNECTOR W/HEADER, .10" 1 101179 PS2: PCB Plug JACK,DC POWER,MALE,2.1mm,SOLDER EYELET TERMINALS,PC MOUNT 2 690540 1 104978 CONNECTOR DSUB, RIGHT ANGLE, DB-9F 1 697688 LED1:Uni-Color Yellow 1 R15, R16: 47 OHM,1/4 WATT,5% 2.1MM COAX PLUG Y-ADAPTER, FEM - 2 MALE Only use one 5vdc power supply 1 65585 Socket IC 18 Pin 1 38623 Socket IC 20 Pin Step 1 - PCB Mounting Install 4 ea 4-40 x 1" bolts/nuts to support PCB off the table.
PAGE 3
Step 4 - (C3,C4) 22pF capacitors Add 2 ea (C3,C4) 22pF capacitors and solder to board. Step 5 - (C1, C2) 0.1uF Capacitors Add 2 ea (C1, C2) 0.1uF capacitors and solder to board.
PAGE 4
Add 6 ea (LED1-6) LEDS and solder to board. (Note: Watch Polarity, + lead is longer than the - lead on LED) Step 7 - (R1-R6) 100 ohm resistors Add 6 ea (R1-R6) 100 ohm resistors and solder to board. Step 8 - (C5-C7) 10uF Capacitors Add 3 ea (C5-C7) 10uF capacitors and solder to board.
PAGE 5
Step 9 - Phase "A" Resistors Add 2 ea (R11, R12) 10k ohm resistors, and 1 ea (R15) 47 ohm resistor. Solder to board. Step 10 - Phase "B" Resistors Add 2 ea (R13, R14) 10k ohm resistors, and 1 ea (R16) 47 ohm resistor. Solder to board.
PAGE 6
Add 2 ea (R7, R8) 470k ohm resistors, 1 ea (R9) 10k ohm resistor and 1 ea (R10) 100k ohm resistor. Solder to board. Step 12 - (PS2) Power Plug Add 1 ea (PS2) Power Plug and solder to board. Step 13 - (RS232-DB9F) DSUB connector Add 1 ea (RS232-DB9F) DSUB connector and solder to board.
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Step 14 - (A, B, VAC) 2 pin cable connectors Add 3 ea (A, B, VAC) 2 pin cable connectors and solder to board. Step 15 - Insert chips into sockets* (see note) Insert 1 ea MAX233 chip into U2 socket. Insert 1 ea PIC16F88 chip into U1 socket. (*Note: need to program PIC16F88 chip before inserting into socket) PCB component installation is now complete.
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Step 16 - Program PIC16F88 chip then insert into U1 socket. Need to program PIC16F88 chip before inserting into U1 socket. Step 17 - Connect HEM PCB and WIZ110SR PCB together Completed HEM PCB and WIZ110SR PCB. Now, connect together using the DSUB connectors.
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Step 18 - Attach 2 pin connectors Cut off power supply plug, strip wires back and attach 2 pin connector. Attach 2 pin connectors to phase "A" and "B" CTs cable ends. Step 19 - Install Current Transformers Install the current transformers around incoming power wires. Label one wire phase "A" and the other Phase "B". WARNING: Be Very Careful while working inside the energized load center. Electrical shock can occur and could be deadly. Proper electrical personal protective equipment must be worn.
PAGE 10
Step 21 - Connect +5vdc power to HEM PCB and WIZ110SR PCB. Connect +5vdc power to HEM PCB and WIZ110SR PCB. Use 1 ea +5vdc power supply and 1 Y-adapter plug. Plug power supply into the female plug. Plug the other male plugs into the HEM and WIZ110SR PCBs. Step 22 - Ethernet Cable Connections Connect Ethernet cable into socket on the WIZ110SR PCB. Connect other end to Ethernet hub/switch. Home Energy Monitor interface install is now complete.
PAGE 11
Step 23 - Power Up PCBs Plug in VAC and +5vdc power supplies into 120VAC outlets. +5vdc, VAC, A, B, LEDS should be on. WDT and Data transmit LEDs should be turning on/off every 2 seconds. If the VAC LED is not on, then check connections. Nothing will operate unless VAC signal is present. Step 24 - Set-Up WIZ110SR PCB Run the WIZ110SR configuration software. Please contact sales@wiznet.co.kr in order to download the WIZVSP Installer. See configuration manual for board set-up details.
PAGE 12
Step 27 - Install the HEM software Install the HEM software on a PC. See User Manual for install and operating details.
PAGE 13
7-2-13 Initial Set-Up Instructions for the WIZ110SR Board. 1. Connect WIZ110SR board to the Ethernet hub that is also connected to your computer. Use a LAN cable (RJ45 CAT-5 Ethernet cable) 2. Connect the 5vdc power supply to the board. Run the “Configuration Tool” Software: Launch WIZ1x0SR_105SR_CFG_V3_0_2.exe This window will appear: 1 1. Search for the WIZ110SR board. Click on the “Search” button.
PAGE 14
7-2-13 Initial Set-Up Instructions for the WIZ110SR Board. 2. After the search is complete: A. The MAC address of the board will be listed in the board list to the left. B. The fields to the right will now contain network information. 2A 6 3 2B 4 5 3. To get an Local IP address assigned automatically, click on the “DHCP” option button. 4. Click on the “Setting” button, to send new set-up to WIZ110SR board. 5. Click on the “Search” button, to retrieve the new board set-up parameters. 6.
PAGE 15
7-2-13 Initial Set-Up Instructions for the WIZ110SR Board. (continued) Set-Up Serial Interface: 8. Click on “Serial” Tab and make changes below: Speed: 9600 baud Data Bits: 8 Parity: Even Stop Bit: 1 Flow: none 8 9 9. Click on the “Setting” button, to send new set-up to WIZ110SR board. 10. Board Set-Up Complete.