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: 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.

Abstract: Provided is a technique which performs an RF initialization setting process using a data input/output terminal in an unmanned transporting device without providing a separate terminal to build an RF communication based automated material handling system while minimizing a structural change of an optical communication based unmanned transporting device which has been already provided.

Abstract: A communicating method between a master and a slave connected through a belt connected to a gripper-unit in a hoist device of a rail car, and to technology in which the master and the slave perform power line communication through a power supply line for supplying power formed in a belt, thereby more stably transmitting and receiving signals in a simple system structure.

Abstract: An apparatus for controlling line guide of an automated material handling system, comprises: optical lines in which a side light emission optical fiber is installed in the whole section of a confluence of a plurality of lines of lines for moving the unmanned transport devices; a main confluence control device which is installed at the confluence, performs optical communication with the unmanned transport device through the optical line; and a sub-confluence control device which is installed in the unmanned transport device, performs optical communication with the main confluence control device through the optical line to report an entry state or a pass completion state for the confluence, and controls the unmanned transport device to perform an entry operation or a standby operation depending on the pass control signal.

Abstract: A communicating method between a master and a slave connected through a belt connected to a gripper-unit in a hoist device of a rail car, and to technology in which the master and the slave perform power line communication through a power supply line for supplying power formed in a belt, thereby more stably transmitting and receiving signals in a simple system structure.

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.

Abstract: Provided is a technology capable of constructing an RF communication automated material handling system while minimizing structural change for a previously installed optical-communication automated material handling system, by constructing RF communication environment between an automated guided vehicle and manufacturing equipment by using separate communication modules provided in the automated guided vehicle and the manufacturing equipment.

Abstract: An apparatus for controlling line guide of an automated material handling system, comprises: optical lines in which a side light emission optical fiber is installed in the whole section of a confluence of a plurality of lines of lines for moving the unmanned transport devices; a main confluence control device which is installed at the confluence, performs optical communication with the unmanned transport device through the optical line; and a sub-confluence control device which is installed in the unmanned transport device, performs optical communication with the main confluence control device through the optical line to report an entry state or a pass completion state for the confluence, and controls the unmanned transport device to perform an entry operation or a standby operation depending on the pass control signal.

Abstract: Provided is a technique which performs an RF initialization setting process using a data input/output terminal in an unmanned transporting device without providing a separate terminal to build an RF communication based automated material handling system while minimizing a structural change of an optical communication based unmanned transporting device which has been already provided.

Abstract: Provided is a technology capable of constructing an RF communication automated material handling system while minimizing structural change for a previously installed optical-communication automated material handling system, by constructing RF communication environment between an automated guided vehicle and manufacturing equipment by using separate communication modules provided in the automated guided vehicle and the manufacturing equipment.

Abstract: A dual-port memory controller having a memory controller and at least one delaying unit. Since the memory controller executes a data access by selecting one processor, the memory controller outputs at least one request disapproval signal indicating that it cannot accept data access requests from other processors. The delaying unit includes a clock oscillator, and flip-flops receiving the clock signal and delaying the request disapproval signal. The delaying unit varies the delay time by varying the clock frequency of the clock oscillator. The memory controller executes data access to the same memory area after a predetermined period of time elapses, so processors can read/write stabilized data.

Abstract: A dual-port memory controller having a memory controller and at least one delaying unit. Since the memory controller executes a data access by selecting one processor, the memory controller outputs at least one request disapproval signal indicating that it cannot accept data access requests from other processors. The delaying unit includes a clock oscillator, and flip-flops receiving the clock signal and delaying the request disapproval signal. The delaying unit varies the delay time by varying the clock frequency of the clock oscillator. The memory controller executes data access to the same memory area after a predetermined period of time elapses, so processors can read/write stabilized data.

Abstract: The present invention relates to a counter circuit for counting the rotated position of the motor and controlling absolute position of the same to control an absolute position of a robot system, which comprises, a RS-422 receiver for receiving encode signals from a motor driver, a 16-bit counter device for receiving rotated-number data of the motor supplied from the receiver and counting the data to output the counted value to a CPU via a bus line, a plurality of 4-bit counters for counting the signals when overflow or underflow is produced at the 16-bit counter portion, a first 8-bit latch circuit for receiving the counted values from the 4-bit counters and outputting the counted values to the CPU, and, a second 8-bit latch circuit for controlling the output state of the receiver on the basis of a control signal supplied through the bus line when a zero pulse control signal is inputted for searching an origin of the robot system thereby preventing erroneous counting operations due to a program and reducing t