Item management system using tag information

A product management system using tag information, comprising:

• a wireless tag provided to each of a plurality of products;
• first to nth readers provided at different locations to receive tag information from the wireless tag, where n is a natural number equal to or greater than 2;
• and
• a control module configured to control the first to nth readers, the control module comprising:
• a receiving unit configured to receive the tag information;
• an information generating unit configured to generate the received tag information and response frequency information representing receipt of the tag information for each of the first to nth readers;
• a location information generating unit configured to generate location information of the wireless tag by using the response frequency information and the location information of the first to nth readers, the location information generating unit generating the location information of the corresponding wireless tag by proportionally applying a difference in response frequency of the corresponding tag information received from the readers to a separation distance between the two or more readers receiving the same tag information;
• a route generating unit configured to generate route data of the wireless tag when the location information of the wireless tag is changed;
• an image storing unit configured to receive and store image data from a plurality of imaging means that photograph images of regions of the first to nth readers;
• an object route generating unit configured to sense an object by analyzing the received image data and generate route data of the sensed object by matching coordinate information in the image data of the object with actual physical location coordinate information;
• and
• an integrated information unit configured to store integrated information in which the information about the wireless tag and the information of the object matched with each other are associated, when the route data of the wireless tag and the route data of the object are matched over reference similarity.