ES2000218A6 - Interfaz de comunicacion serie en linea de un ordenador a un bucle de corriente - Google Patents

Interfaz de comunicacion serie en linea de un ordenador a un bucle de corriente

Info

Publication number
ES2000218A6
ES2000218A6 ES8600382A ES8600382A ES2000218A6 ES 2000218 A6 ES2000218 A6 ES 2000218A6 ES 8600382 A ES8600382 A ES 8600382A ES 8600382 A ES8600382 A ES 8600382A ES 2000218 A6 ES2000218 A6 ES 2000218A6
Authority
ES
Spain
Prior art keywords
current loop
diode
fet
voltage
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES8600382A
Other languages
English (en)
Inventor
Edward Lee Sterling
William Lee Thompson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Publication of ES2000218A6 publication Critical patent/ES2000218A6/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Dc Digital Transmission (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Computer And Data Communications (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

SE ESTABLECE UN INTERFAZ DE COMUNICACION SERIE EN LINEA, DESDE UN CIRCUITO DIGITAL COMO UN ORDENADOR O UN TERMINAL ACCIONADO MANUALMENTE, HASTA UN BUCLE DE CORRIENTE QUE TIENE LINEAS PARA CONECTAR UN TRANSMISOR A UNA FUENTE DE ALIMENTACION. EL INTERFAZ COMPRENDE UN DIODO QUE SE CONECTA EN SERIE CON UNA DE LAS LINEAS DEL BUCLE DE CORRIENTE. EL DIODO SE CONECTA EN PARALELO CON LA FUENTE Y PURGA DE UN TRANSISTOR FET, CUYA PUERTA DE CONTROL SE HALLA CONECTADA A LA SALIDA DE UN AMPLIFICADOR DIFERENCIAL QUE RECIBE EN UNA DE SUS ENTRADAS UNA SEÑAL PULSATORIA DE TENSION DIGITAL. LA OTRA ENTRADA DEL AMPLIFICADOR SE MANTIENE A UNA TENSION SELECCIONADA, DE MANERA QUE LOS IMPULSOS DE TENSION SON EXTRAIDOS DEL AMPLIFICADOR CUANDO EL CIRCUITO DIGITAL GENERA SUS IMPULSOS DE TENSION. ESTO HACE QUE EL TRANSISTOR SEA O NO SEA CONDUCTOR EN SINCRONISMO CON LOS IMPULSOS DE TENSION.
ES8600382A 1985-08-12 1986-07-18 Interfaz de comunicacion serie en linea de un ordenador a un bucle de corriente Expired ES2000218A6 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/764,915 US4691328A (en) 1985-08-12 1985-08-12 On-line serial communication interface from a computer to a current loop

Publications (1)

Publication Number Publication Date
ES2000218A6 true ES2000218A6 (es) 1988-01-16

Family

ID=25072154

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8600382A Expired ES2000218A6 (es) 1985-08-12 1986-07-18 Interfaz de comunicacion serie en linea de un ordenador a un bucle de corriente

Country Status (8)

Country Link
US (1) US4691328A (es)
EP (1) EP0213768A3 (es)
JP (1) JPS6239926A (es)
KR (1) KR870002509A (es)
BR (1) BR8603347A (es)
CA (1) CA1242018A (es)
ES (1) ES2000218A6 (es)
IN (1) IN164088B (es)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4816703A (en) * 1985-08-12 1989-03-28 The Babcock & Wilcox Company On-line serial communication interface from a current loop to a computer and/or terminal
US4794372A (en) * 1987-08-24 1988-12-27 Fischer & Porter Co. Two-wire DC signal telemetering system
DE3908558A1 (de) * 1989-03-16 1990-09-20 Knick Elekt Messgeraete Gmbh Signaluebertragungssystem
US5416723A (en) * 1993-03-03 1995-05-16 Milltronics Ltd. Loop powered process control transmitter
US5434774A (en) * 1994-03-02 1995-07-18 Fisher Controls International, Inc. Interface apparatus for two-wire communication in process control loops
US5585777A (en) * 1994-06-07 1996-12-17 Rosemount Inc. Transmitter with electrical circuitry for inhibiting discharge of stored energy
US5610552A (en) * 1995-07-28 1997-03-11 Rosemount, Inc. Isolation circuitry for transmitter electronics in process control system
US6044305A (en) * 1996-10-04 2000-03-28 Fisher Controls International, Inc. Method and apparatus for debugging and tuning a process control network having distributed control functions
US6047222A (en) * 1996-10-04 2000-04-04 Fisher Controls International, Inc. Process control network with redundant field devices and buses
AU4744297A (en) * 1996-10-04 1998-04-24 Fisher Controls International Inc. Maintenance interface device for use in a process control network
US5970430A (en) * 1996-10-04 1999-10-19 Fisher Controls International, Inc. Local device and process diagnostics in a process control network having distributed control functions
WO1998014852A1 (en) 1996-10-04 1998-04-09 Fisher Controls International, Inc. A network accessible interface for a process control network
US6014612A (en) * 1997-10-02 2000-01-11 Fisher Controls International, Inc. Remote diagnostics in a process control network having distributed control functions
US6088665A (en) * 1997-11-03 2000-07-11 Fisher Controls International, Inc. Schematic generator for use in a process control network having distributed control functions
IT1302218B1 (it) 1998-09-16 2000-09-05 Abb Kent Taylor Spa Dispositivo di lettura e programmazione per trasmettitori dipressione, temperatura e simili.
US6510351B1 (en) 1999-03-15 2003-01-21 Fisher-Rosemount Systems, Inc. Modifier function blocks in a process control system
US6618745B2 (en) 1999-09-10 2003-09-09 Fisher Rosemount Systems, Inc. Linking device in a process control system that allows the formation of a control loop having function blocks in a controller and in field devices
CN101132377B (zh) * 2006-08-23 2010-06-23 中兴通讯股份有限公司 一种收发串行申请装置及其方法
US9340405B2 (en) 2012-01-26 2016-05-17 Progressive International Electronics Inc. Fuel transaction tracking system
CN115694468A (zh) * 2022-10-31 2023-02-03 中磊电子（苏州）有限公司 信号转换电路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057793A (en) * 1975-10-28 1977-11-08 Johnson Raymond E Current carrier communication system
FR2403695A1 (fr) * 1977-09-16 1979-04-13 Cii Honeywell Bull Dispositif pour assurer l'alimentation et la transmission de signaux electriques entre deux dispositifs par l'intermediaire de contacts en nombre reduit
US4520488A (en) * 1981-03-02 1985-05-28 Honeywell, Inc. Communication system and method
DE3280015D1 (en) * 1982-08-19 1989-12-14 Honeywell Inc Improvements in 2-wire analog communication systems
US4504959A (en) * 1983-02-25 1985-03-12 Johnson Service Company Noise-neutralizing digital interface circuit
JPS60148234A (ja) * 1984-01-13 1985-08-05 Yamatake Honeywell Co Ltd アナログ・デイジタル通信装置

Also Published As

Publication number Publication date
BR8603347A (pt) 1987-03-17
CA1242018A (en) 1988-09-13
EP0213768A3 (en) 1988-01-13
JPS6239926A (ja) 1987-02-20
EP0213768A2 (en) 1987-03-11
IN164088B (es) 1989-01-14
KR870002509A (ko) 1987-03-31
US4691328A (en) 1987-09-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20040503