easymeter_mon

Query EasyMeter Q3CA smart meters via IR and output in Zabbix Active Check format.

The protocol on the IR interface is Smart Message Language (SML). The messages contain the values in the OBIS format.

Acknowledgements

This project basically just puts the building blocks togehter. Thanks to:

• libsml for SML parsing
• vzlogger for obis.c
• Sven Jordan for IR reader electronics
• Zabbix for the montioring software

Dependencies

Hardware

• EasyMeter Q3CA smart meter for solar inverters
• IR - UART Interface (PNG / SCHEME)

Software

• Compilation
  • CMake
  • libsml (https://github.com/dailab/libsml)
  • Essentials build utils (git, gcc, ...)
• Data usage
  • Zabbix

Compilation & Installation

Example for Debian/Ubuntu based systems

• Tested for
• Debian Wheezy (7) on RaspberryPi
• Ubuntu Precise (12.04) x64
• Q3CA

# Install dependencies
apt-get install build-essential cmake uuid-dev uuid-runtime git debhelper

# Compile & install libsml
git clone git://github.com/simonswine/libsml.git
cd libsml
dpkg-buildpackage -b
cd ..
dpkg -i libsml*deb

# Compile & install easymeter_mon
git clone git://github.com/simonswine/easymeter_mon.git
cd easymeter_mon
mkdir build 
cd build 
cmake ..
make 
make install

Usage

Parameters

Parameter	Default value	Description
-d <device>	/dev/ttyAMA0	Specify serial device to query
-h <host>	powermon	Hostname for Zabbix output format

Query smart meter

easymeter_mon -z powermon -d /dev/ttyAMA0
powermon power.counter-in 8208517.71
powermon power.counter-out 6000398.39
powermon power.counter-in-t1 8202860.00
powermon power.counter-in-t2 1130.00
powermon power.counter-in-t3 1100.00
powermon power.counter-in-t4 1110.00
powermon power.counter-in-t5 1100.00
powermon power.counter-in-t6 1210.00
powermon power.counter-out-t7 5999270.00
powermon power.counter-out-t8 1120.00
powermon power.power -1561.21
powermon power.power-l1 -1815.88
powermon power.power-l2 236.09
powermon power.power-l3 18.58

Send values to Zabbix

• Setup a Zabbix host which is linked to this template Zabbix Template
• Make sure this script is run on a periodic basis:

easymeter_mon -z <zabbix_host> -d /dev/ttyAMA0 | zabbix_sender -i - -z <zabbix_server>

Example charts from Zabbix

• Inverter production vs. consumption of energy
• Power per phase