ES2107350A1 - Circuito de vigilancia y proteccion de microordenador. - Google Patents

Circuito de vigilancia y proteccion de microordenador.

Info

Publication number
ES2107350A1
ES2107350A1 ES09402457A ES9402457A ES2107350A1 ES 2107350 A1 ES2107350 A1 ES 2107350A1 ES 09402457 A ES09402457 A ES 09402457A ES 9402457 A ES9402457 A ES 9402457A ES 2107350 A1 ES2107350 A1 ES 2107350A1
Authority
ES
Spain
Prior art keywords
supplied
comparator
charge
watchdog circuit
capacitor
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.)
Granted
Application number
ES09402457A
Other languages
English (en)
Other versions
ES2107350B1 (es
Inventor
John L Erdman
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of ES2107350A1 publication Critical patent/ES2107350A1/es
Application granted granted Critical
Publication of ES2107350B1 publication Critical patent/ES2107350B1/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

UN CIRCUITO DE VIGILANCIA Y PROTECCION DE MICROORDENADOR, EN EL QUE UNA TENSION INFERIOR A UNA TENSION DE REFERENCIA SE SUMINISTRA A UN COMPARADOR, SOLO EN RESPUESTA A UNA SEÑAL DE ESTADO DE TREN DE IMPULSOS QUE TIENE UNA FRECUENCIA DE REPETICION PREDETERMINADA. LA SENSIBILIDAD DE LA FRECUENCIA DE REPETICION RESULTA DE UNA BOMBA DE CARGA CONECTADA PARA RECIBIR EL TREN DE IMPULSOS DE ESTADO A TRAVES DE UNA RESISTENCIA Y DE UN CONDENSADOR CONECTADOS EN SERIE QUE TIENE UNA CONSTANTE DE TIEMPO ADECUADA. EL TERMINAL DE SALIDA DEL COMPARADOR EN EL QUE SE PRODUCE LA SEÑAL DE REPOSICION, PROPORCIONA UN CAMINO DE IMPEDANCIA BAJA A TIERRA SI LA BOMBA DE CARGA RETIRA CARGA DE UN SEGUNDO CONDENSADOR MAS DESPACIO DE LO QUE LA CARGA ES SUMINISTRADA A ELLA A TRAVES DE UNA RESISTENCIA DE CARGA, CON LO QUE SE AUMENTA LA TENSION SUMINISTRADA AL COMPARADOR.
ES09402457A 1993-11-30 1994-11-29 Circuito de vigilancia y proteccion de microordenador. Expired - Lifetime ES2107350B1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/159,387 US5426776A (en) 1993-11-30 1993-11-30 Microprocessor watchdog circuit

Publications (2)

Publication Number Publication Date
ES2107350A1 true ES2107350A1 (es) 1997-11-16
ES2107350B1 ES2107350B1 (es) 1998-07-01

Family

ID=22572400

Family Applications (1)

Application Number Title Priority Date Filing Date
ES09402457A Expired - Lifetime ES2107350B1 (es) 1993-11-30 1994-11-29 Circuito de vigilancia y proteccion de microordenador.

Country Status (4)

Country Link
US (1) US5426776A (es)
AU (1) AU7899394A (es)
CA (1) CA2136384A1 (es)
ES (1) ES2107350B1 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU677722B2 (en) * 1993-12-10 1997-05-01 Alcatel Australia Limited Watchdog timer circuit
US5563799A (en) * 1994-11-10 1996-10-08 United Technologies Automotive, Inc. Low cost/low current watchdog circuit for microprocessor
US5528756A (en) * 1995-01-30 1996-06-18 Elsag International N.V. Method and apparatus for performing supervisory functions in digital systems and obtaining diagnostics thereof
DE19780852D2 (de) * 1996-08-12 1999-11-11 Papst Motoren Gmbh & Co Kg Verfahren und Anordnung zur Überwachung eines Mikroprozessors
US6344959B1 (en) 1998-05-01 2002-02-05 Unitrode Corporation Method for sensing the output voltage of a charge pump circuit without applying a load to the output stage
DE10203807C1 (de) * 2002-01-31 2003-07-31 Siemens Ag Verfahren und Schaltungsanordnung zum Überwachen der Funktion eines Prozessors
US7116139B2 (en) * 2002-09-13 2006-10-03 Texas Instruments Incorporated Apparatus and method for controlling operation of a processor device during startup
DE102004017692A1 (de) * 2004-04-10 2005-11-10 Moeller Gmbh Verfahren zum Betreiben eines mechanisch-elektronischen Positionsgebers
DE102004017950B3 (de) * 2004-04-14 2005-06-23 Moeller Gmbh Mechanisch-elektronischer Positionsgeber
DE102005024550A1 (de) 2005-05-28 2006-11-30 Wilo Ag Hardwarekonzept einer Reset-Schaltung
DE102008008047B4 (de) * 2008-02-08 2016-09-22 Siemens Aktiengesellschaft Externer Watchdog sowie Schaltgerät, insbesondere Niederspannungsschaltgerät, mit einem externen Watchdog
IT1391181B1 (it) * 2008-07-09 2011-11-18 Indesit Co Spa Circuito watchdog particolarmente per uso in un elettrodomestico
CN101551671B (zh) * 2009-05-12 2012-05-23 奇瑞汽车股份有限公司 一种汽车整车控制器监控复位方法及装置
EP2565653B1 (en) * 2011-09-05 2019-05-08 Fluke Corporation Watchdog for voltage detector with display triggering visual warning
DE102014113226B3 (de) * 2014-09-15 2015-05-07 Pintsch Bamag Antriebs- Und Verkehrstechnik Gmbh Taktsignalausgabeeinrichtung, Schaltung mit einer solchen Taktsignalausgabeeinrichtung, Steuereinheit mit einer solchen Schaltung und Lichtsignalgeber mit einer solchen Steuereinheit
JP2018094720A (ja) * 2016-12-08 2018-06-21 キヤノン株式会社 電子機器
CN113157470B (zh) * 2020-03-23 2024-03-22 国电南京自动化股份有限公司 一种多处理器异构系统的看门狗控制系统及其控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586179A (en) * 1983-12-09 1986-04-29 Zenith Electronics Corporation Microprocessor reset with power level detection and watchdog timer
US4759592A (en) * 1986-09-08 1988-07-26 Spacesaver Corporation Movable storage unit control system with system resetting watchdog circuit
US4803682A (en) * 1985-03-04 1989-02-07 Sanyo Electric Co., Ltd. Resetting system
EP0441714A1 (fr) * 1990-02-09 1991-08-14 Valeo Securite Habitacle Dispositif de surveillance du fonctionnement d'un système à microprocesseur ou analogue
US5081625A (en) * 1988-10-05 1992-01-14 Ford Motor Company Watchdog circuit for use with a microprocessor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403302A (en) * 1980-10-30 1983-09-06 Essex Group Inc. Automatic resetting of control system for loss of time reference
DE3603082A1 (de) * 1986-02-01 1987-08-06 Bosch Gmbh Robert Vorrichtung zum ruecksetzen von recheneinrichtungen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586179A (en) * 1983-12-09 1986-04-29 Zenith Electronics Corporation Microprocessor reset with power level detection and watchdog timer
US4803682A (en) * 1985-03-04 1989-02-07 Sanyo Electric Co., Ltd. Resetting system
US4759592A (en) * 1986-09-08 1988-07-26 Spacesaver Corporation Movable storage unit control system with system resetting watchdog circuit
US5081625A (en) * 1988-10-05 1992-01-14 Ford Motor Company Watchdog circuit for use with a microprocessor
EP0441714A1 (fr) * 1990-02-09 1991-08-14 Valeo Securite Habitacle Dispositif de surveillance du fonctionnement d'un système à microprocesseur ou analogue

Also Published As

Publication number Publication date
AU7899394A (en) 1995-06-15
ES2107350B1 (es) 1998-07-01
CA2136384A1 (en) 1995-05-31
US5426776A (en) 1995-06-20

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Legal Events

Date Code Title Description
EC2A Search report published

Date of ref document: 19971116

Kind code of ref document: A1

Effective date: 19971116

FA2A Application withdrawn

Effective date: 19990303