| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for accurately preparing a gamma ray dose rate map for a vertical plane, such as timber or a side wall of a building.SOLUTION: A Geiger-Muller tube is attached to a tip of a telescopic rod, to measure a gamma ray dose rate at a high place. An infrared light emitting part is provided on the rod at substantially the same position as the GM tube for acquiring the position thereof. An infrared camera and a visible-light camera are installed at positions separated from the position of the rod, to perform image processing on a video image obtained by the cameras. The position of the infrared light emitting part and the dose rate at the position are superimposed and displayed on an object to be measured captured by the visible-light camera. The above operation is repeated while sequentially changing the positions, to display a dose rate distribution of the building side wall or the like on a visible-light picture of the building wall surface, for example. |
