Abstract: An automated material handling system includes: at least one state detecting sensor disposed inside or outside the carrier to detect an internal state of the carrier including a degree of pollution in the carrier; a carrier interface to transmit a carrier state value; a carrier controller including a controller interface disposed on the plate to obtain a carrier state value by communicating with the carrier interface, and a carrier control unit configured to generate carrier management information including the carrier state value obtained through the controller interface and current location information of the carrier and output the carrier management information to a server; and a server configured to analyze an internal pollution state of the carrier based on the carrier management information provided by the carrier controller.

Abstract: A data communication method for reducing a working time of an automated material handling system between a master communication device installed in an unmanned transfer device and a slave communication device installed in a manufacturing facility in the automated material handling system which transfers a carrier between manufacturing facilities through the unmanned transfer device where the method is to reduce a working time for a carrier by transmitting and receiving data to and from a manufacturing facility while an unmanned transfer device is stopped before performing a carrier work or while it is moving after performing a carrier work, when the unmanned transfer device and the manufacturing facility transmit and receive data for transferring the carrier by using a wireless data communicating device in an automated material handling system.