| 摘要 |
An object recognition device capable of recognizing distributed kinds and distributed positions of objects 11 is provided with: a plural kinds of resonant tags (1, 2, 3, ...) for sending different frequencies of echo waves (F1, F2, F3, ...) from each other; an object holding section Z for holding a plurality of objects each provided with a plurality of resonant tags; detection systems 9, 9' for transmitting predetermined frequencies of radio waves (W1, W2, W3, W4, W5, W6, W7, W8) to respective objects distributed from the object holding section to predetermined distribution areas (A, B, ...) and for detecting the echo waves sent from the plural kinds of resonant tags when the radio waves are transmitted; and a recognition system 27 for recognizing the distributed kinds and distributed positions of the objects based on the echo waves detected with the detection systems. A card medium with built-in resonant tags excellent in durability is provided through a manufacturing method that is simple and low in cost and that eliminates limitations to the number and kinds to be recognized. <IMAGE> <IMAGE> <IMAGE>
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