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1. (EP3020658) INVENTORY MANAGEMENT SYSTEM USING AUTOMATED GUIDED VEHICLE
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Claims

1. An inventory management system using an automated guided vehicle, comprising:

a scanning unit comprising one or more antennas vertically disposed at locations corresponding to heights of a shelf case in order to recognize information about articles placed in the shelf case;

guide lines deployed along one or more shelf cases;

a vehicle configured to support the scanning unit, to recognize the guide lines, and to move along the guide lines; and

a control unit configured to control the vehicle so that the vehicle moves along the guide lines.


  2. The inventory management system of claim 1, further comprising a charging station disposed adjacent to the guide lines, and configured to charge a battery of the vehicle in a state in which the vehicle moves along the guide lines, or moves and stops.
  3. The inventory management system of claim 1, further comprising:

a guidance rail installed on the shelf case in parallel with the guide lines; and

a guide portion formed on a side portion of the vehicle so that the vehicle can be supported by the guidance rail when the vehicle moves in parallel with the shelf case.


  4. The inventory management system of claim 1, wherein the guide lines employ a magnetic guidance method.
  5. The inventory management system of claim 1, wherein the vehicle comprises:

a body configured such that the scanning unit is mounted thereon;

a line recognition unit configured to recognize the guide lines;

a drive unit installed on the body, and configured to include drive rollers that move along the guide lines in response to a drive signal from the control unit; and

a battery configured to provide power to the drive unit.


  6. The inventory management system of claim 1, wherein the vehicle further comprises:

an obstacle detection unit configured to detect an obstacle located in front of itself; and

a communication module configured to apply sensing signals, detected by the line recognition unit and the obstacle detection unit, to the control unit.


  7. The inventory management system of claim 1, wherein the scanning unit comprises:

a support arm installed on the vehicle;

scanning arms spaced apart on the support arm in a vertical direction so that the scanning arms face shelf cells of the shelf case; and

antennas connected to front ends of the scanning arms in order to scan information from articles located in the shelf cells.


  8. The inventory management system of claim 7, wherein each of the scanning arms comprises:

a main scanning arm connected to the support arm; and

a sub scanning arm connected to an end of the main scanning arm so that the sub scanning arm can be selectively inserted into and retracted from the main scanning arm to adjust a length of the scanning arm.


  9. The inventory management system of claim 7, wherein RFID tags are attached to the articles, and the antennas recognize the RFID tags.
  10. The inventory management system of claim 7, wherein the antennas are connected to the scanning arms so that the antennas can be tilted.
  11. The inventory management system of claim 7, wherein the scanning unit further comprises an image processing unit installed at an upper end of the support arm in order to determine locations of the articles and to capture images of the articles.
  12. The inventory management system of claim 1, wherein the control unit controls the vehicle and the scanning unit using identifiers included in the guide lines.
  13. The inventory management system of claim 1, wherein the control unit receives location information of shelf cells from identifiers of the guide lines, and enables antennas of the scanning unit, located to face the shelf cells, to be selectively operated.