Wireless tag position estimation device, wireless tag communication device, wireless tag position estimation system, wireless tag position estimation method, and wireless tag position estimation program
First Claim
1. A wireless tag communication device which transmits and receives information to/from a wireless tag with wireless communication and which provides information related to the wireless tag to a wireless tag position estimation device which estimates a position of the wireless tag, comprising:
- radiowave irradiation means which irradiates a radiowave to transmit information to the wireless tag;
radiowave receiving means which receives a response radiowave from the wireless tag in response to radiowave irradiation by the radiowave irradiation means; and
wireless tag response information transmission means which transmits information related to a communication direction obtained by transmission/reception with the wireless tag to the wireless tag position estimation device, whereinat least one of that the radiowave irradiation means irradiates a radiowave having a directivity in a predetermined direction at a predetermined position and that the radiowave receiving means receives only a response radiowave transmitted from the predetermined direction at the predetermined position is applied.
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Accused Products
Abstract
There is provided a wireless tag position estimation system which includes a wireless tag communication device and a wireless tag position estimation device and estimates a position of an article on which a wireless tag is fitted regardless of an arrangement, an appearance, and a package of the article. The wireless tag communication device includes a unit which irradiates a radiowave from a predetermined position and direction to the wireless tag, and a unit which receives a response signal from the wireless tag with respect to radiowave irradiation. The wireless tag position estimation device includes a unit which estimates information about a specific position and direction which irradiates a radiowave when a response from the wireless tag can be received on the basis of the information received by the wireless tag communication device, and a unit which estimates the position of the wireless tag on the basis of estimated information.
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Citations
13 Claims
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1. A wireless tag communication device which transmits and receives information to/from a wireless tag with wireless communication and which provides information related to the wireless tag to a wireless tag position estimation device which estimates a position of the wireless tag, comprising:
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radiowave irradiation means which irradiates a radiowave to transmit information to the wireless tag; radiowave receiving means which receives a response radiowave from the wireless tag in response to radiowave irradiation by the radiowave irradiation means; and wireless tag response information transmission means which transmits information related to a communication direction obtained by transmission/reception with the wireless tag to the wireless tag position estimation device, wherein at least one of that the radiowave irradiation means irradiates a radiowave having a directivity in a predetermined direction at a predetermined position and that the radiowave receiving means receives only a response radiowave transmitted from the predetermined direction at the predetermined position is applied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 11)
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8. A wireless tag position estimation device which estimates a position of a wireless tag on the basis of information from a wireless tag communication device which transmits and receives information to/from the wireless tag, comprising:
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wireless tag response direction estimation means which estimates information about a specific position at which a response radiowave from the wireless tag can be received in communication and a specific direction in which the response radiowave can be received in communication on the basis of the information from the wireless tag communication device; and wireless tag position estimation means which estimates the position of the wireless tag on the basis of information of a plurality of response directions estimated by the wireless tag response direction estimation means. - View Dependent Claims (9, 10)
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12. A wireless tag position estimation method which estimates a position of a wireless tag, comprising:
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a wireless tag communication device which transmits and receives information to/from the wireless tag, and a wireless tag position estimation device which estimates a position of the wireless tag on the basis of information from the wireless tag communication device, wherein the wireless tag communication device has a configuration in which a direction of communication with the wireless tag when viewed from a certain position, and, with this configuration, information related to the acquired communication direction to the wireless tag position estimation device, and the wireless tag position estimation device obtains information of a plurality of response directions representing a specific position at which a response radiowave from the wireless tag can be received in communication and a specific direction in which the response radiowave can be received in communication on the basis of the information from the wireless tag communication device and then estimates the position of the wireless tag.
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13. The wireless tag position estimation program mounted on a computer which constructs a wireless tag position estimation device which estimates a position of the wireless tag on the basis of information from a wireless tag communication device which transmits and receives information to/from the wireless tag, wherein
the computer is caused to function as wireless tag response direction estimation means which estimates information about a specific position at which a response radiowave from the wireless tag can be received in communication and a specific direction in which the response radiowave can be received in communication on the basis of the information from the wireless tag communication device; - and
wireless tag position estimation means which estimates the position of the wireless tag on the basis of information of a plurality of response directions estimated by the wireless tag response direction estimation means.
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Specification