Ashok Kumar Gupta

US Patent:

6424872, Jul 23, 2002

Filed:

Aug 21, 1997

Appl. No.:

08/916178

Inventors:

David A. Glanzer - Georgetown TX
Terrance L. Blevins - Austin TX
Ram Ramachandran - Austin TX
Kenneth D. Krivoshein - Elgin TX
Patricia E. Brett - Ft. Washington PA
Jack Elias - Ft. Washington PA
William R. Hodson - Fort Washington PA
Frank Lynch - Fort Washington PA
Ashok K. Gupta - Fairport NY
Lee A. Neitzel - Sacremento CA
Thomas B. Kinney - Foxboro MA
Chuji Akiyama - Tokyo, JP
Yasuo Kumeda - Tokyo, JP
Hiroshi Mori - Tokyo, JP
Mitsugu Tanaka - Tokyo, JP

Assignee:

Fieldbus Foundation - Austin TX

International Classification:

G05B 1101

US Classification:

700 18, 700 17, 700 4, 700 83, 700 86, 709224, 709227, 709230, 709201, 710 15, 710 72, 710105, 714 10, 714 11

Abstract:

The present invention is a block oriented control system that allows interoperability between devices made by different manufacturers. A block oriented control system is a system which includes a plurality of field devices incorporating a physical layer, communication stack, and user layer, with the field devices being connected by a transmission medium, such as a bus. The physical layer receives signals from the bus and translates the signals into a message for the communications stack, and receives messages from the communications stack and translates the messages into signals for the bus. The communication stack controls the communications between devices operating in the control system. The user layer is a block oriented approach to the systems control functions, and includes function blocks and system management. The function blocks are standardized encapsulations of control functions, such as analog input or proportional/derivative.

US Patent:

6594530, Jul 15, 2003

Filed:

Jun 4, 2002

Appl. No.:

10/160094

Inventors:

David A. Glanzer - Georgetown TX
Terrence L. Blevins - Round Rock TX
Ram Ramachandran - Austin TX
Kenneth D. Krivoshein - Elgin TX
Patricia E. Brett - Ft. Washington PA
Jack Elias - Lansdale PA
William R. Hodson - Ft. Washington PA
Frank Lynch - Ft. Washington PA
Ashok K. Gupta - Dayton NJ
Lee A. Neitzel - Austin TX
Thomas B. Kinney - Foxboro MA
Chuji Akiyama - Tokyo, JP
Yasuo Kumeda - Tokyo, JP
Hiroshi Mori - Tokyo, JP
Mitsugu Tanaka - Tokyo, JP

Assignee:

Fieldbus Foundation - Austin TX

International Classification:

G05B 1101

US Classification:

700 18, 700 4, 700 17, 700 83, 700 86, 709224, 709227, 709230, 709201, 710 15, 710 72, 710105, 714 10, 714 11

Abstract:

The present invention is a block oriented control system that allows interoperability between devices made by different manufacturers. A block oriented control system is a system which includes a plurality of field devices incorporating a physical layer, communication stack, and user layer, with the field devices being connected by a transmission medium, such as a bus. The physical layer receives signals from the bus and translates the signals into a message for the communications stack, and receives messages from the communications stack and translates the messages into signals for the bus. The communication stack controls the communications between devices operating in the control system. The user layer is a block oriented approach to the systems control functions, and includes function blocks and system management. The function blocks are standardized encapsulations of control functions, such as analog input or proportional/derivative.