Package inspection system

摘要

A package inspection system includes a conveyor mechanism 6, an X-ray generator 10 applying X rays to a package W1 conveyed by the conveyor mechanism 6, an X-ray sensor 13, and an optical sensor 15. First image data showing the outline of the content of the package W1 are generated based on detection output from the X-ray sensor 13. Second image data showing the outline of the wrapping of the package W1 are generated based on detection output from an optical sensor 15. The relative position of the wrapping and the content is determined based on the first and second image data, so that failures, e.g., the content caught in a seal of the wrapping can be detected accurately. The package inspection system can accurately determine a position of a wrapping and the content of a package even if a package has a light non-transmissive wrapping.

主权项

1. A package inspection system comprising:
a conveyor mechanism for conveying a package having a content in a wrapping whose outline can be visually recognized; a radiation part for irradiating the moving package with an X ray or a terahertz wave; an electromagnetic-wave detection part for detecting the X ray or terahertz wave transmitted through the package, the electromagnetic-wave detection part being configured to acquire a first image data defining an outline of the content of the package; an illumination part for illuminating the moving package with light, wherein the content within the wrapping cannot be seen through optically; an optical detection part for detecting the light having passed the package, the optical detection part being configured to acquire a second image data defining an outline of the wrapping of the package; and a controller configured to determine positional relationship between the wrapping and the content based on the first image data and the second image data, the radiation part and the electromagnetic-wave detection part being placed at opposite sides of the conveyor mechanism, the illumination part and the optical detection part being placed at opposite sides of the conveyor mechanism, and the conveyor mechanism having a gap through which the electromagnetic-wave detection part and optical detection part are allowed to acquire the first image data and the second image data, respectively.