UAVからの放射温度計測における太陽光外乱への耐性の向上方策

抄録

The paper reports a method to improve the accuracy of radiation thermometry by infrared thermo-camera equipped on a small UAV (Unmanned Aerial Vehicle), eliminating the disturbances in the outdoor environment. In this study, the authors are developing a system for detecting anomalies associated with the deterioration of piping equipment in a geothermal power plant. However, it was challenging to obtain accuracy with an infrared thermo-camera due to the significant influence of external radiation disturbance such as solar radiation and sky reflection in an outdoor environment. We proposed models of compensating for those disturbances. Those improved the accuracy to detect anomalies of the facility by considering the characteristics of emissivity and reflected radiation in the measurement. Consequently, by thermal model corresponding to the effect of solar radiation and sky reflection, we confirmed that the infrared thermo-camera on UAV could accurately detect temperature anomalies in plant facilities, even in an outdoor environment.