This tutorial presents how to visualize the power estimation computed by a formula on a grafana dashboard to obtain this kind of visualisation:
This screenshot show the visualisation of power consumption of a web browser and tools used for monitoring (database, sensor, formula)
In this tutorial, we describe how to connect a formula to a grafana instance, using InfluxDB. Then, we will see how to configure grafana to visualize the power estimation computed by the formula.
This tutorial assume that you know how launch a formula and a sensor to compute power estimation and that you have an InfluxDB and a grafana instance running on your local machine.
The InfluxDB instance listen on port
1234 and Grafana instance listen on port
Connect to your Grafana instance and go to the "Data sources" section (in the configuration part of the side bar).
Click on the
"Add data source" button and select
Enter a data source name (here we choose "InfluxDB-1"), the instance URI (
http://localhost:4321) and the database name you use in the file
config_formula.json then click on the
"Save and test" button.
Go to the
"Create Dashboard" section on the side bar to create a new dashboard.
Click on the
"add Query" button and write the following query on the
Query field to request the power estimations from the InfluxDB measurement:
SELECT power FROM "power_consumption" GROUP BY target
$tag_target on the
ALIAS BY field to label each graph with the target name
To display the power consumption in real time, you can update the range of the visualisation to
last 5 minutes and the
refresh dashboard parameter to
5s. This parameter are on the top-right corner of the UI.