This repo features an example code on how to analyze the timer setting for the lights to be turned off based on the detected motion. This repo provides an example data set for both light and PIR readings in the data directory.
Read more info at https://www.zvonarov.com/post/improve-energy-conservation-for-buildings
To run the analysis you will need two datetime data series:
- light sensor readings (installed under direct light from the lighting system)
- Motion sensor readings (installed to cover most of the area where the light is active)
Motion sensors connected with the lights usually provide the shutoff timer with a default value set to 30 minutes. You can safely decrease the timer and improved energy efficiency.
In main.py configure the IMPROVED_TIMER value to correspond to the desired light shutdown timer (in seconds).
Prepare the environment to run the code. For example, using virtualenv run:
virtualenv -p /path/to/python3 light_analysis
# activate the environment
source light_analysis/bin/activate
# install required libraries
pip install -r requirements.txt
After your data is collected, put it in CSV format where the first column is datetime and the second one is value. Name the files light.csv and pir.csv respectively.
Run python main.py. After the data is analyzed you will see the output:
- total time lights were on
- possible time on
- improvement in
%
The graph will also be shown if supported, if not - will be saved to picture.png in the main directory of the repo. You can find an example of a graph in misc/example.png
For more detailed logs change the log level in main.py file, default is INFO. For example:
log.basicConfig(level=log.DEBUG)