Author: IVAN VRABAC
Menthor: DANIJEL ESKERIČIĆ
School: Elektrotehnička škola Zagreb
The ionising radiation detector with 120 dB alarm and LCD screen uses the Croduino basic3 microcontroller board that contains a ATMega328 microcontroller. It detects ionising radiation and displays the value in particles per minute and the total number of particles passing through the Gieger tube, in milliroentgen and microSieverts. The Geiger tube operates at 300 – 500 V and when the particles enter the Geiger tube, that voltage catches the particles, making a clicking sound. Once the Geiger counter counts more than 300 particles per minute, the alarm is activated, and the alarm is automatically turned off then the radiation level drops. This radiation detector is very useful in cities in close proximity to nuclear power plants. It is inexpensive to make (about HRK 450), reliable, takes up little space and uses little energy.