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3. Energy monitoring

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SamR1 edited this page Jun 12, 2017 · 11 revisions

(documentation in progress)

For this version, the prototype relies on CitizenWatt application.
CitizenWatt is an open source and open hardware sensor. It is associated with a Python application, that runs on a Raspberry Pi 1. Data are stored locally and exposed through an API.

The original sources are here:
➡ Sensor : https://github.com/CitoyensCapteurs/CitizenWatt-sensor
➡ Application : https://github.com/CitoyensCapteurs/CitizenWatt-Base

CitizenWatt application has been modified to run on a Rapsberry Pi 3 and to work with other types of sensors:
➡ https://github.com/DAISEE/CitizenWatt-Base-RPI3

For now, several branches are available:
‣ master (works with CitizenWatt sensor, through NRF24, not used for this prototype),
‣ smartplug (works with AWOX Smartplug, through bluetooth, not used for this prototype),
‣ ina291 (works with INA219 sensor, directly connected to Raspberry Pi),
‣ acs712 and acs712-soc (works with an ACS 712-based sensor and an optional LiPo Fuel Gauge sensor connected to an Arduino).

TODO : issue DAISEE/CitizenWatt-Base-RPI3/issues/2

Connections to sensors

CitizenWatt Sensor

  • connections between Raspberry Pi and and the transceiver:
PIN NRF24L01+ RPI RPi Connector
1 GND rpi-gnd (25)
2 VCC rpi-3v3 (17)
3 CE rpi-gpio22 (15)
4 CSN rpi-gpio8 (24)
5 SCK rpi-sckl (23)
6 MOSI rpi-mosi (19)
7 MISO rpi-miso (21)
8 IRQ - -

Source:
➡ http://tmrh20.github.io/RF24/RPi.html

INA219

  • Activate I²C in Interfacing Options 
$ sudo raspi-config

  • Connections:

Source:
➡ http://www.rototron.info/raspberry-pi-ina219-tutorial/

ACS712-based sensor

Source:
➡ [FR] http://wiki.mchobby.be/index.php?title=SENSEUR-COURANT-ACS712#Brancher

Application installation

  • Python3 and packages installation
$ git clone https://github.com/DAISEE/CitizenWatt-Base-RPI3.git
$ sudo mv CitizenWatt-Base-RPI3/  /opt/citizenwatt/
$ cd /opt/citizenwatt/
$ sudo bash system/install_req.sh
  • citizenwatt-visu compilation
$ dpkg-deb --build citizenwatt-visu
$ sudo dpkg -i citizenwatt-visu.deb
  • Database creation
$ sudo -u postgres psql
[sudo] password for debian: 
psql (9.4.9)
Type "help" for help.

postgres-# CREATE DATABASE citizenwatt;
postgres-# CREATE USER citizenwatt PASSWORD 'citizenwatt';
postgres-# GRANT ALL ON DATABASE citizenwatt TO citizenwatt;
postgres-# exit
postgres-#
  • Firewall configuration
$ sudo iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination :8080
$ sudo netfilter-persistent save
  • (Additional steps) for CitizenWatt sensor
$ sudo aptitude install libboost-python-dev 
$ sudo ln -s /usr/lib/arm-linux-gnueabihf/libboost_python-py34.so /usr/lib/arm-linux-gnueabihf/libboost_python3.so 
$ sudo aptitude install python3-setuptools 
$ ./setup.py build   
$ sudo ./setup.py install
  • (Additional steps) for AWOX Smartplug
$ sudo pip3 install bluepy
  • (Additional steps) for INA219 sensor
$ sudo pip3 install pi-ina219
  • (Additional steps) for ACS-based sensor
$ sudo pip3 install pyserial

Application

For testing, all programs are launched manually.

$ python3 receive.py
$ python3 process.py
$ python3 visu.py

To launch these programs automatically, use the supervisor:

$ cd /opt/citizenwatt/system
$ mv supervisor_citizenwatt.conf /etc/supervisor/conf.d/supervisor_citizenwatt.conf

After launching the server, the application will be available locally (see hostname or ip).
Complete the configuration:

(if the field "Fournisseurs d'énergie" is blank, see CitizenWatt-Base-RPI3/issues/3 [FR])

If a sensor is connected, data will be displayed in the "CONSO" tab:

Data are available through an API.
Example:

/api/<sensor:int>/get/<watt_euros:watts|kwatthours|euros>/by_time/<time1:float>/<time2:float>
Returns measures between timestamps <time1> and <time2> from sensor <sensor> in watts or euros.

(to be completed)

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