Smart CO monitoring

The aim of the project was to create an IoT telemetry and control system. I decided to work on a solution to monitor the carbon monoxide level in factories.

On this document the implementation and the details of the codes are not explained. For more information about the choices and the code please refer to the following document: Documentation.pdf.

Simulation on cooja:

⚠️ Warning: Before running the simulation "project.csc", make sure cooja is installed on your computer. ⚠️

Preparing the simulation:

Once contiki and cooja are installed: Download the directory project and place it in the following contiki directory:

cd ./contiki-ng/

Create the database:

Install MySQL:

sudo apt update
sudo apt install mysql-server
sudo mysql_secure_installation
sudo mysql -u root
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'PASSWORD';
systemctl restart mysql.service

Once MySQL is installed:

CREATE DATABASE mydatabase;
USE mydatabase;
CREATE TABLE CO_MONITORING (sensor smallint, co_level int, timestamp int);
USE mydatabase;
SELECT * FROM CO_MONITORING;

Opening cooja:

Once cooja is installed:

contikier    
cd ./tools/cooja
ant run

Opening the simulation:

Once cooja is open:

Go to File, Open simulation and open project.csc Start the serial socket associated to the border router Start the simulation

Starting the border router:

Once the simulation is started, in a new terminal:

cd ./contiki-ng/project/rpl-border-router
make TARGET=cooja connect-router-cooja

Starting the MQTT application:

Once the border router is started, in a new terminal:

cd ./contiki-ng/project/application
python3.7 mqtt_collector.py

Starting the CoAP application:

Once all the sensors have given at least a value, in a new terminal:

cd ./contiki-ng/project/application
python3.7 coap_actuator.py

At this stage the cooja mote output window should look like this:

The LEDs:

On the following screenshot of the simulation we can see that:

Sensor 2 : 79 ppm => Actuator 5 has its LED ${\color{green}green}$ (low mode).

Sensor 3 : 310 ppm => Actuator 6 has its LED ${\color{red}red}$ (high mode).

Sensor 4 :136ppm => Actuator 7 has its LED ${\color{yellow}yellow}$ (moderate mode) (In cooja the led appears ${\color{blue}blue}$).

The use of the button:

When triggering a button, this acts like an emergency button that opens all the emergency exits. Thus the CO level drops instantly:

Results:

After some time, the outputs on the terminal for the applications and the database should look like this:

And here is a plot of a simulation with Grafrana: