http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Radiation tolerance of a small COTS single board computer for mobile robots
Andrew West,Jordan Knapp,Barry Lennox,Steve Walters,Stephen Watts 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.6
As robotics become more sophisticated, there are a growing number of generic systems being used forroutine tasks in nuclear environments to reduce risk to radiation workers. The nuclear sector has calledfor more commercial-off-the-shelf (COTS) devices and components to be used in preference to nuclearspecific hardware, enabling robotic operations to become more affordable, reliable, and abundant. Toensure reliable operation in nuclear environments, particularly in high-gamma facilities, it is importantto quantify the tolerance of electronic systems to ionizing radiation. To deliver their full potential to endusers, mobile robots require sophisticated autonomous behaviors and sensing, which requires significantcomputational power. A popular choice of computing system, used in low-cost mobile robots for nuclearenvironments, is the UP Core single board computer. This work presents estimates of the total ionizingdose that the UP Core running the Robot Operating System (ROS) can withstand, through gamma irradiation testing using a Co-60 source. The units were found to fail on average after 111.1 ± 5.5 Gy, due tofaults in the on-board power management circuitry. Its small size and reasonable radiation tolerancemake it a suitable candidate for robots in nuclear environments, with scope to use shielding to enhanceoperational lifetime.