The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 09, 2003

Filed:

Mar. 04, 1999
Applicant:
Inventors:

Yoshihiro Shirota, Takasaki, JP;

Katsuhiko Sekiguchi, Tama, JP;

Tetsuya Miyoshi, Fuchu, JP;

Yutaka Fuwa, Sagamihara, JP;

Yoshiyuki Shimokawa, Fuchu, JP;

Hideki Sasaki, Fuchu, JP;

Masao Hori, Ageo, JP;

Assignee:

Kabushiki Kaisha Toshiba, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D 3/12 ;
U.S. Cl.
CPC ...
G05D 3/12 ;
Abstract

The control system for a plant comprises a rectifier connected to a network. The rectifier has a unit for acquiring precise time, a unit for sampling the state quantity on the precise time to convert the state quantity into digital data and a unit for adding the precise time at each sampling timing to the digital data to transmit the digital data each having the precise time to the network. A breaker is connected to the network. The breaker has a unit for receiving, through the network, a control command thereto and a unit for transmitting an operating state thereof to the network. A control apparatus is connected to the network. The control apparatus has a unit for performing an operation process on the digital data transmitted through the communication network and the operating state of the breaker transmitted therethrough and a unit for transmitting the control command through the communication network to the breaker in response to a result of the control operation process of the performing unit.


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