Electronic Cough Monitor

Cough is an important symptom to consider when diagnosing diseases. Hence, information about level as well as the rate of cough could be very useful for physicians. In this work, a cough monitoring system was designed. The designed system was capable of recording only cough sounds using appropriate circuit. The circuit utilizes a simple transducer (uni- directional microphone). An LED (light emitting diode) was caused to light every time a cough sound is detected. The design was also accompanied with a programmed alarm (using ATmega8535L) if the number of coughs exceeds certain number.