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특허 상세정보

Serial data isolator industrial control system providing intrinsically safe operation

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04B-001/00   
미국특허분류(USC) 340/310.03 ; 340/310.01 ; 340/310.07 ; 340/538
출원번호 US-0090205 (1998-06-03)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Baxter
인용정보 피인용 횟수 : 54  인용 특허 : 4
초록

Low voltage logic circuitry is used to permit an entire subsystem of an industrial controller to be placed within a hazardous environment to receive a high speed serial link and undertake the control of multiple control points without expensive and awkward long cable runs and electrically isolating circuits for each cable run. Energy and bandwidth limiting on the high speed link allows power levels commensurate with high data rates yet intrinsic safety of the media allowing it to freely pass in and out of the hazardous area. A mixture of intrinsically sa...

대표
청구항

[ We claim:] [1.] A network interface connecting components of an industrial controller communicating via electrical data signals comprising:an electrical conductor for communicating data signals between the components;a high pass filter positioned between a first component and the electrical conductor to attenuate low frequencies of a data signal to avoid the generation of sparks with sufficient energy to ignite a flammable atmosphere during a fault condition of the conductor;a power limiting circuit positioned between a first component and the electric...

이 특허를 인용한 특허 피인용횟수: 54

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