Home Energy Monitor2
Distinctive Excellence Award:
The Circuit Cellar team felt strongly that there were considerably more first-rate projects entered in WIZnet Connect the Magic 2014 Design Challenge than could be satisfied with the available prizes. Thus, we designated a special category called “Distinctive Excellence” for some of the more interesting projects. The Distinctive Excellence projects are posted below.
See entry WZ1096.
http://circuitcellar.com/wiznet2014/distinctiveexcellence/
Project Description:
- This project measures real-time AC voltage and AC currents of an entire home.
- The data values calculated utilizing these real-time measurements are kilowatts (KW) and kilowatt-hours (KWH) in addition to the cost of using electricity. The measurements and calculated data values are sent to the Exosite Portal web site for viewing and data logging.
- The components used in this project are installed into an active main AC voltage load center, as a result care must be taken when installing these components. The block diagram below illustrates the connections between the project’s main components.
- A 9vdc power supply provides power to the Arduino Uno board which converts this into 5vdc and 3.3vdc power. The 3.3vdc is used to power the WIZnet WIZ550io Ethernet Mo
dule and the 5vdc provides power for the status LEDS. An AC Voltage Transformer (VT) and AC Current Transformers (CT) are connected to the analog inputs of the Arduino Uno board to allow measurement of single phase voltage and AC currents.The WIZnet WIZ550io Ethernet Module communicates with the Arduino Uno board using the SPI communication protocol.
- The data is sent to the Exosite Portal web site using the WIZ550io Ethernet Module as a gateway to the internet. An ethernet cable is run to the main ac voltage load center for this purpose. With this connection, the home energy usage can be accessed anywhere a PC can connect to the internet.
Exosite Portal web site: Displayed Data from Monitor:
Monitor Board:
File Download:
