Design and development of a portable gamma radiation monitor

Abstract

A portable gamma radiation monitor has been designed and developed. The monitor can be used effectively in the dose range from 0.07 to 500 mGy/h due to gamma rays of energy greater than 65 keV. The monitor overestimated radiation doses and the uncertainty in the measured dose rate has been found to be < or = 30%. The response of the monitor can be considered isotropic within an acceptable error of +/-30%. Provision has also been added to use the monitor as an installed radiation monitor. In installed mode, it can be operated from a remote location up to 1 km and the timing history can be stored on a personal computer.

A Microcontroller-Based Radiation Monitoring and Warning System

“…This issue is partially solved in [8] by using a desktop computer and an internet connection. The portable system presented in [15], which is based on an 8-bit AMD-80535 microcontroller, is able to transmit the data remotely by interconnecting it through a serial line to a PC, PDA or a smart phone. In the last years, some radiation monitoring systems based on wireless sensor networks were reported in the literature.…”

“…In order to evaluate the performances of our system, we replicated the transducers presented in [8] and [15], and the tests were ran in parallel. Several measurements were performed at the end of year 2010 in the Ploiesti City perimeter.…”

“…Table 1) 4s 1700ms (wireless) 0.59 (average) TA 1 represents the time interval between the beginning of sensor exposure and the release of alert signal at IFW (or PC network interface card). Our proposed system, as well as the replicated systems (see [8], [15]) received and processed the measured data at software level in an interval of time according to relation (1).…”