Ampoule inspecting method
First Claim
1. A method of inspecting the existence of foreign matter contained in fluid filled in a sealed container having a flaw, which comprises the steps of passing said container at an approximately constant speed before a television camera provided at a stationary position within an inspection region while the fluid in the container is turned;
- scanning the container by the use of said television camera sequentially at at least three positions of said container spaced at a given interval such that image signals each corresponding to a photograph partition are generated at each position and such that an abnormal signal is detected from among image signals of each of the photograph partitions;
setting a specified range where the abnormal signal in the image signals of a specific photograph partition has been transmitted for removing the flaw; and
comparing the image signal of the particular photographic partition with the image signal of another photographic partition such that, when the abnormal signal in the image signals of another photograph partition exists beyond the specified range of said specific photograph partition, the presence of the foreign matter in the liquid within the container can be indicated by such an abnormal signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for inspecting transparent or semitransparent, liquid-filled containers as to whether or not the liquid in each of the container contains foreign matters. The inspection is carried out by passing the container in front of a television camera while the liquid in each container undergoes a spiral motion as it passes through an inspection region, and processing video signals generated from the television camera by the use of a unique controlling circuit. With this controlling circuit, distinction can be made between signals indicative of the presence of foreign matters in the liquid and that indicative of the presence of external flaws on the container.
32 Citations
17 Claims
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1. A method of inspecting the existence of foreign matter contained in fluid filled in a sealed container having a flaw, which comprises the steps of passing said container at an approximately constant speed before a television camera provided at a stationary position within an inspection region while the fluid in the container is turned;
- scanning the container by the use of said television camera sequentially at at least three positions of said container spaced at a given interval such that image signals each corresponding to a photograph partition are generated at each position and such that an abnormal signal is detected from among image signals of each of the photograph partitions;
setting a specified range where the abnormal signal in the image signals of a specific photograph partition has been transmitted for removing the flaw; and
comparing the image signal of the particular photographic partition with the image signal of another photographic partition such that, when the abnormal signal in the image signals of another photograph partition exists beyond the specified range of said specific photograph partition, the presence of the foreign matter in the liquid within the container can be indicated by such an abnormal signal. - View Dependent Claims (2, 3, 4, 5, 6)
- scanning the container by the use of said television camera sequentially at at least three positions of said container spaced at a given interval such that image signals each corresponding to a photograph partition are generated at each position and such that an abnormal signal is detected from among image signals of each of the photograph partitions;
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7. A method of inspecting the existence of foreign matter contained in fluid filled in a sealed container having a flaw, which comprises the steps of passing said container at an approximately constant speed before a television camera provided at a stationary position within an inspection region while turning the fluid contents in the container;
- scanning the container by the use of said television camera sequentially at at least three positions of said container, each of said three positions being spaced at a given interval such that image signals each corresponding to a photographic partition are generated at each position;
fetching a first abnormal signal from said image signals with a first level which is used as a reference, said level being low enough in sensitivity to detect the foreign matter from each of said image signals and, simultaneously, fetching a second abnormal signal from said image signals with a second level which is used as a reference, said level being higher in sensitivity than said first level by an amount which is enough to remove the flaw; and
comparing the second abnormal signal of the image signals in a particular photograph partition with the first abnormal signal in the image signals of another photograph partition so as to have said first abnormal signal determine that the foreign matter exists in the fluid when the latter and the former are in the different regions of the photograph partition. - View Dependent Claims (8, 9, 10, 11)
- scanning the container by the use of said television camera sequentially at at least three positions of said container, each of said three positions being spaced at a given interval such that image signals each corresponding to a photographic partition are generated at each position;
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12. A method of inspecting the existence of foreign matter contained in fluid filled in a sealed container having a flaw, which comprises the steps of passing said container at an approximately constant speed before a television camera provided at a stationary position within an inspection region while turning the fluid contents in the container;
- scanning the container by the use of said television camera sequentially at at least three positions of said container, each of said three positions being spaced at a given interval such that image signals each corresponding to a photographic partition are generated at each position;
fetching a first abnormal signal from said image signals with a first level as a reference, which level is low enough in sensitivity to detect the foreign matter from each of said image signals and, simultaneously, fetching a second abnormal signal from said image signals with a second level which is used as a reference, said level being higher in sensitivity than said first level by an amount which is enough to remove the flaw;
setting a specified range including a specified position, and its vicinity, at which the second abnormal signals are generated; and
comparing the specified range with the first abnormal signal in the image signals of another photograph partition so as to have the first abnormal signal determine that the foreign matter exists in the fluid when the latter and the former are in the different regions of the photograph partition. - View Dependent Claims (13, 14, 15, 16, 17)
- scanning the container by the use of said television camera sequentially at at least three positions of said container, each of said three positions being spaced at a given interval such that image signals each corresponding to a photographic partition are generated at each position;
Specification