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Optical inspector for slat-type container filling machine

  • US 4,408,295 A
  • Filed: 11/28/1980
  • Issued: 10/04/1983
  • Est. Priority Date: 11/28/1980
  • Status: Expired due to Term
First Claim
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1. An apparatus for detecting the presence and absence of objects in an array of predetermined object positions said apparatus comprising:

  • (a) A cooperating radiation device means for directing electromagnetic energy toward said array and a radiation detector means for receiving said electromagnetic energy which is incident upon said object position under only one of the two possible conditions which are an object being present and being absent and for not receiving said energy under the other condition, a first one of said cooperating means comprising individually addressable discrete devices spaced along said array, there being at least twice as many of said discrete devices as there are possible object positions;

    (b) digital addressing circuit means connected to said discrete devices for sequentially actuating said discrete devices;

    (c) circuit means connected to and for actuating the second one of said cooperating means during the actuation of said discrete devices;

    (d) data storage circuit means connected to said addressing circuit means and the radiation detector means for storing data representing the presence or absence of received radiation during actuation of each of said discrete devices; and

    (e) electronic data processing means for storing the addresses of discrete devices representing the approximate object positions in said array and for comparing the data for each of said object position addresses to the desired data for each of said object position addresses and providing an output in the event they are not identical.

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