AUTOMATIC OUTPUT-VALUE ADJUSTMENT METHOD FOR READER/WRITER
First Claim
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1. An automatic output-value adjustment method of a reader/writer in a production system for managing production by the reader/writer reading a tag, comprising:
- setting an output value of a radio wave from an antenna of the reader/writer;
increasing the output of the radio wave from a prescribed value and reading/writing a tag attached to a product; and
returning the output of the radio wave to the prescribed value after reading/writing.
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Abstract
When a detector sensor such as an infrared sensor or the like detects a palette or cart mounting a product, the output of the radio wave from the antenna of the reader/writer is set to a minimum value. Then, the radio wave output value is gradually increased from the minimum value until an RFID tag can be read/written. After the RFID tag can be read/written, a target process such as the reading/writing of the RFID tag or the like is performed and the process is terminated. After the process is terminated, the radio wave output is returned to the minimum value.
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Citations
7 Claims
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1. An automatic output-value adjustment method of a reader/writer in a production system for managing production by the reader/writer reading a tag, comprising:
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setting an output value of a radio wave from an antenna of the reader/writer; increasing the output of the radio wave from a prescribed value and reading/writing a tag attached to a product; and returning the output of the radio wave to the prescribed value after reading/writing. - View Dependent Claims (2, 3, 4, 5)
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6. An automatic output-value adjustment method of a tag reader/writer, comprising:
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maximizing the output of a radio wave from an antenna of the reader/writer; reading/writing a tag when the tag enters a readable range of the reader/writer; reducing the radio wave output when detecting a tag attached to a user; and returning the radio wave output to a maximum after a prescribed time after detecting the tag attached to the user.
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7. A reader/writer which reads a tag, comprising:
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an output-value setting unit for setting an output value of a radio wave from an antenna of the reader/writer; a reading/writing unit for increasing the output value of the radio wave from a prescribed value and reading/writing a tag attached to a product; and a returning unit for returning the output value of the radio wave after reading/writing the tag.
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Specification