Study on microprocessor based radiation monitoring system

In the present work, a microprocessor based radiation monitoring system in which direct process the out pulses produced from the scintillation counter used as a radiation detector was designed and constructed. The pulses out from the signal processing circuit was counted by means of the microprocessor system, and then converted into dose rate by the logical operation which was performed using the software program in the present work. In order to test the operational behaviors of the system, cesium-137(3 Ci) source was used as a standard irradiation source. Radiation monitoring system in this work has shown good performance within the error of 5% when it was compared with the analogue circuit and has been put into practical use of the alarm determination in the case of the detector is exposed to the excessive radiation of which the dose rate is over 20mR/h. (Author)