REMOTE SUPERVISORY CONTROL SYSTEM

• Main Authors: MANABE YUICHI, TANAKA TETSUJI
• Format: Patent
• Language: English
• Published: 11.03.2004
• Edition: 7
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; SELECTING; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

PROBLEM TO BE SOLVED: To speed up transmission processing of supervisory control information between a master station and many slave stations. SOLUTION: Relay stations 151to 155each having a communication function equivalent to that of the master station 11 are placed among the master station and the slave stations 121to 145in order to make communication through communication paths adopting a multi-drop method among the master station and the N slave stations and transmit information of a slave station having 'information to be transmitted' to the master station, each relay station adjusts the number of slave stations being relay objects to be a proper number, each relay station collects information of each slave station being the relay object temporally in parallel. Each relay station sequentially transmits the collected slave station information to the master station, collects / edits the information of the slave stations and has a changeover switch for transmission lines in its inside. By changing over the switch, communication is enabled among the master station and each of the slave stations not through the relay stations, and the switch selects the direct communication system among the master station and the slave stations or the communication system between the master station and the slave station through the relay station. COPYRIGHT: (C)2004,JPO