| 摘要 |
PURPOSE:To make it possible to detect a minute amount of bubbles in a container accurately by providing a state wherein a liquid sealed container which is an object to be inspected is inclined from the horizontal position, irradiating X rays on the uppermost end part of the container, obtaining the X-ray fluoroscopic image, and processing the image. CONSTITUTION:A liquid sealed container 1 is mounted on a slant stage 13. The container is set so that remaining bubbles appear at a corner part 1a of the container 1. An X-ray controller 4 is driven, and X rays 6 are emitted from an X-ray generator 5 toward the corner part 1a. The transmitted X rays are detected with an X ray- detector. The image is picked up with a TV camera 7 as the fluoroscopic image. In an image processing circuit 8, the fluoroscopic image is binary-coded. The binary- coded image is sent into a TV monitor 9, and the display object is obtained. A signal processing circuit 11 is started with the detected signal of the container 1 through a photoelectric switch 3. A reference binary-coded image (the binary-coded image of a container wherein bubbles are not present) which is stored in the inside is sent into a judging circuit 10. In the circuit 10, the sizes of the occupying areas 1 or 0 are compared between the binary-coded image 52 and the reference binary-coded image 53, and the presence or absence and amount of the bubbles are judged. |
