details

This project is built to prevent forest fire and to extinguish forest fire more rapidly by using the CO2 sensor and DHT22 sensor.
This project uses a DHT22 sensor that monitors the temperature and humidity of the environment. So by using the Arduino, we can monitor the input readings of the DHT22 and create an output signal if they are hazardous fire.

Author Said

One of the most effective ways of stopping forest fires is by either catching the fire as soon as possible, or monitoring the conditions of the forest and creating an alert when dangerous conditions arise, i.e high temperature and low humidity.

Software

Download the Source code1
Download the Source code2

Hardware

The materials and tools that are needed to construct this project are:
– Arduino UNO board
– Ethernet shield
– DTH22 sensor
– Piezoelectric buzzer
– NPN transistor
– Red LED
– RGB LED
– 100k / 1k / 680 / 330 / 220 / 4.7K ohm resistor
– Micro SD card

The Ethernet shield connect the data out pin of the DHT22 to pin 2, the analogue out (pin 4, orange cable) to one of the red (positive) rails, the GND pin to the blue (negative) rail and the +5V pin to the other red (positive) rail as shown in the diagram.

Result

Check the SD card by plugging it in to the computer, there should be a csv (comma separated values) file called DATALOG.cvs, open it with Excel (or a similar program). There should be three columns displayed, the first one is the humidity readings in % , the second is the temperature in degrees Celsius and the third is the dew point in degrees Celsius.

Then the sensor needs to be connected as shown in the diagram, and voilà a tree powered data collector, that can measure the temperature and humidity of the environment.