Nippon Telegraph and Telephone Corporation

Murata Kikai Kabushiki Kaisha

Murata Machinery, Ltd.

Nippon Telegraph and Telephone West Corporate

Toyokazu Kobayashi

Takao Hayashi

Yoshinori Yamada

Hiroki Sone

Masayuki Tsujino

Akiya Inoue

Hiromichi Kawano

Ikuharu Shimamura

In response to a transfer request, for which a loading time at a transfer source and a loading time at a transfer target are designated by a production controller, there is created a transfer scenario, which contains a basic transfer (From) from the transfer source to a buffer near the transfer target, for example, and a basic transfer (To) from the buffer to the transfer target. In order that the basic transfers (From, To) may be able to be executed, the buffer is reserved, and a transfer vehicle is allocated. The time period for the transfer vehicle to run to the transfer source or the buffer and the time period for the transfer vehicle to run from the transfer source or the buffer are estimated to assign a transfer command to the transfer vehicle. The possibility that the loading and the loading time may deviate from a designated period is evaluated. In case this possibility is high, a production controller is informed that a just-in-time transfer is difficult.

Transfer system, and transfer method

A transport scenario composed of a basic transport (From) from a transport starting point to, e.g., a buffer near the transport destination point and a basic transport (To) from the buffer to the transport destination point is created in response to a transport request of a production controller for transport whose loading times at the transport starting point and at the transport destination point are specified. The buffer is reserved so as to perform the basic transport (From) and the basic transport (To), transport vehicles are allocated, the travel time to the transport starting point or the buffer and the travel time from the transport starting point or the buffer are estimated, and transport instructions are given to the transport vehicles. The possibility that the loading times are out of the specified period is evaluated. If the possibility is larger, the impossibility of a just-in-time transport is notified to the production controller.

Transport system and transport method

In the case of transporting an article to a load port which is occupied by another article, at the time of generating a transportation command, estimated arrival time Twhen the article arrives at the load port and estimated removal time Twhen the article which occupies the load port is removed are compared with each other. If the time Tis earlier than the time T, a transportation command for transporting the article to the load port is assigned. If the time tis later than the time T, a transportation command for transporting the article to a buffer on the upstream side of the load port is assigned.

Transportation system and transportation method

A plurality of intra-bay routes and an inter-bay route between the intra-bay routes are defined as a logic bay, and the minimum number of allocated transportation vehicles is determined based on the unit of each logic bay.

Transportation vehicle system

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Aichi, Japan

Toyokazu Kobayashi