Open Energy Monitor• Open-source energy monitoring tools• AC Electricity
• apparent power • current• voltage• real power• power factor
• Temperature• Humidity• Pulses (from pulse output utility meters)• Elster IrDA (direct utility meter interface)
How does it work?
• Data Sensor Node (emontx)• Base Station (emonbase)• Web Application (emoncms)• Display (emonGLCS)
Results
Raspberry-Pi SD Card Failures (Limited number of writes)Solution : Read-only file system
40W < not reliable100W < >10%. 100W > 10%, 150W > 6%250W > 4% 500W > 2%.