Patent ID: 11945002
Assignee: GIST(GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY)
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B

Claim 9:
10. An automatic metal sorting method using laser induced breakdown spectroscopy, the automatic metal sorting method comprising:
measuring a position and a shape of at least one of waste metals being on a conveyer that is being moved at a constant speed;
determining the kind of the measured waste metal by emitting a laser to the waste metal and by analyzing a plasma spectrum signal generated by the emitted laser; and
separating and discharging the waste metal in accordance with the determined kind of the waste metal,
wherein the determining comprises:
emitting the laser by a laser emitter;
receiving, by a focusing module, the laser from the laser emitter;
adjusting, by the focusing module, a focal length of the laser in accordance with a change in positions and shapes of the waste metals;
receiving, by a dichroic mirror, the laser having the adjusted focal length from the focusing module;
transmit, by the dichroic mirror, the received laser;
receiving, by a galvano-scanner, the laser from the dichroic mirror; and
directing, by the galvano-scanner, the laser to the waste metals located on the conveyer by changing a direction of the laser emitted from the laser emitter by adjusting an angle of a mirror disposed in the galvano-scanner, and
wherein the focusing module is positioned between the dichroic mirror and the laser emitter, and the dichroic mirror is positioned between the focusing module and the galvano-scanner.