Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Reexamination Certificate
2011-03-01
2011-03-01
Leja, Ronald W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
Reexamination Certificate
active
07898786
ABSTRACT:
A system and method for providing an intrinsically safe (IS) galvanically isolated barrier device. An IS barrier device provides IS galvanic isolation between a non-IS system and an IS system using a two-stage approach. In the first stage, a non-galvanically isolated IS barrier limits energy of electrical transmissions received from the non-IS system to convert such electrical transmissions into IS transmissions. In the second stage, the IS transmissions are transmitted through a galvanic isolator to the IS system to galvanically isolate the IS system from the non-IS system. A digital monolithic isolator cannot be IS certified to be the single bridge between IS and non-IS systems, however, it can be used in a certifiable fashion to isolate between IS systems. When used in conjunction with a non-galvanic IS barrier that is capable meeting the IS certification as non-IS to IS barrier, a digital monolithic isolator can be used to implement the galvanic isolator such that high speed, low cost galvanic isolation is possible. Such a galvanically isolated barrier device can be used to implement an IS galvanically isolated high speed communication bus for sample system control.
REFERENCES:
patent: 4691384 (1987-09-01), Jobe
patent: 4777375 (1988-10-01), Bozzuto, Jr.
patent: 5136630 (1992-08-01), Breneman et al.
patent: 5375454 (1994-12-01), Andrejasich et al.
patent: 5841648 (1998-11-01), Mansfield
patent: 6037857 (2000-03-01), Behrens et al.
patent: 6154679 (2000-11-01), Kessler et al.
patent: 6154683 (2000-11-01), Kessler et al.
patent: 6404609 (2002-06-01), Mansfield et al.
patent: 6501200 (2002-12-01), Engel et al.
patent: 6873065 (2005-03-01), Haigh et al.
patent: 7312716 (2007-12-01), Kothari et al.
“IEEE P1451.6 Home Page”, downloaded from http://grouper.ieee.org/groups/1451/6/index.htm on Dec. 23, 2009.
“IEEE P1451.6 Scope & Purpose Page”, downloaded from http://grouper.ieee.org/groups/1451/6/ScopePurpose.htm on Dec. 23, 2009.
“IEEE P1451.6 PAR Page”, downloaded from http://grouper.ieee.org/groups/1451/6/PAR.htm on Dec. 23, 2009.
“IEEE P1451.6 Terms & Definitions Page”, downloaded from http://grouper.ieee.org/groups/1451/6/TermsDefinitions.htm on Dec. 23, 2009.
“NeSSI (New Sampling/Sensor Initiative) Generation II Specification”, Center of Process Analytical Chemistry, May 26, 2003.
“NeSSI (New Sampling/Sensor Initiative) Generation II Specification”, Center of Process Analytical Chemistry, Jun. 21, 2004.
Dubois, Rob et al., “NeSSI—Generation II Revolution or Evolution?”, ISA 2001, Houston Texas, Sep. 10, 2001.
“Industrial Automation using the CAN Bux Platform White Paper”, Texas Instruments, May 2, 2003.
“Valve Communication Terminals” StoneL Corporation, downloaded from http://www.stonel.com/pdfs.vct—lit.pdf on Apr. 29, 2010.
“I.S. Isolators” pp. 3/50-3/51, downloaded from http://www.mega.ex.com/product—hazardous/Electrical%20Equipment/STAHL/03050051.pdf on Dec. 23, 2009.
“2001 IS Application Guide”, Pepperl+Fuchs, Inc., pp. 28-29, downloaded from http://www.am.pepperl-fuchs.com/pdf/documents/fieldbusapplication.pdf on Dec. 23, 2009.
“Fieldbus Repeater for IEC 1158.2”, Pepperl + Fuchs Group, downloaded from http://www.moniteurdevices.com/PDF/FF/PowerIS.pdf on Dec. 23, 2009.
“Fieldbus Intrinisically Safe Barrier and Repeater SB312-LP Datasheet”, Smar Research Corporation, downloaded from http://www.smar.com/pdf/catalogs/SB312-LPDSB.pdf on Dec. 23, 2009.
“The I2C-Bus Specification”, Version 2.1, Phillips Semiconductors, Jan. 2000.
“Profibus Guideline”, Version 1.1, Jun. 2003.
“CANopen Intrinsically Safe Capable Physical Layer Specification”, CiA Draft Standard Proposal 103, Version 1.0, Mar. 23, 2007.
Kowalewski Filip A.
Leja Ronald W
Siemens Industry Inc.
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