Archived Forum

Over the last few months I've been working on a dedicated heatpump monitoring board with John Cantor who I have been working with for some time on heatpump monitoring. Earlier this year we documented a basic MBUS reader for reading Kamstrup heat meters http://openenergymonitor.org/emon/node/1944. This board builds on that work, integrating the MBUS reader circuitry into a board that also features standard OEM electricity monitoring, DS18B20 temperature sensing and more.

I recently installed an air source heatpump at home which was an added impetus to get this done and is providing an ideal testing setup. 

I've written a longer blog post about this work here: http://openenergymonitor.blogspot.co.uk/2015/12/heat-pump-monitoring.html

The board is currently going through initial testing. The design is on github here: https://github.com/openenergymonitor/Hardware/tree/master/HeatpumpMonitor

It features:

• MBUS reader for Kamstrup heat meters
• CT current and AC/AC voltage based electricity monitoring 
• Pulse counting 
• Analog inputs for Vortex Flow Sensor (VFS) option (e.g Grundfos, Sika) 
• 6 individually broken out DS18B20 temperature sensor connections 
• Arduino ATmega328 core 
• Connectivity options: ESP-12 WIFI, RaspberryPI header, RFM69 
• LCD display connector.

Here's a picture of it:

If you're interested in the heat pump monitoring board, please get in contact. Drop me an email on: trystanlea@openenergymonitor.org or post here. I'll also try and post the initial results showing the operation and performance of my heatpump at home.