Microwave detector and counter for sheets of paper

Microwave detector and counter for sheets of paper

For a particular industrial application, a special microwave sensor has been invented and patented. Its use is foreseen when it is necessary to count the number of sheets of paper within a specific volume. It is used to check the number of sheets taken from a pile so as to know with certainty, for example, how many will end up in an envelope. The following diagram shows how it can be used.

Schema di montaggio

The system is composed of:

  • an electronic unit that generates and emits a microwave RF signal and subsequently carries out the measurement of its power after it has interacted with the material;
  • a cavity within which the measuring material is placed;
  • connection cables for the RF signal.
SNA v1.2

The measurement takes place in a very short time (<1 ms) and in contactless mode: the material is not altered at all.

Sensors and paper

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