IT1137944B - Sistema di rilevamento di guasto di un sensore mediante sorveglianza della sua attivita' - Google Patents

Sistema di rilevamento di guasto di un sensore mediante sorveglianza della sua attivita'

Info

Publication number
IT1137944B
IT1137944B IT8122597A IT2259781A IT1137944B IT 1137944 B IT1137944 B IT 1137944B IT 8122597 A IT8122597 A IT 8122597A IT 2259781 A IT2259781 A IT 2259781A IT 1137944 B IT1137944 B IT 1137944B
Authority
IT
Italy
Prior art keywords
surveillance
activity
sensor
detection system
fault detection
Prior art date
Application number
IT8122597A
Other languages
English (en)
Italian (it)
Other versions
IT8122597A0 (it
Inventor
Richard Dennis Murphy
Douglas Harold Clelford
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of IT8122597A0 publication Critical patent/IT8122597A0/it
Application granted granted Critical
Publication of IT1137944B publication Critical patent/IT1137944B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
    • G01R31/2829—Testing of circuits in sensor or actuator systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0038—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing pulses or pulse trains according to amplitude)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/0055—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Gyroscopes (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Navigation (AREA)
IT8122597A 1980-06-26 1981-06-26 Sistema di rilevamento di guasto di un sensore mediante sorveglianza della sua attivita' IT1137944B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/163,445 US4337516A (en) 1980-06-26 1980-06-26 Sensor fault detection by activity monitoring

Publications (2)

Publication Number Publication Date
IT8122597A0 IT8122597A0 (it) 1981-06-26
IT1137944B true IT1137944B (it) 1986-09-10

Family

ID=22590033

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8122597A IT1137944B (it) 1980-06-26 1981-06-26 Sistema di rilevamento di guasto di un sensore mediante sorveglianza della sua attivita'

Country Status (9)

Country Link
US (1) US4337516A (US20100223739A1-20100909-C00025.png)
JP (1) JPS5741711A (US20100223739A1-20100909-C00025.png)
AU (1) AU542308B2 (US20100223739A1-20100909-C00025.png)
CA (1) CA1164067A (US20100223739A1-20100909-C00025.png)
DE (1) DE3124082A1 (US20100223739A1-20100909-C00025.png)
ES (1) ES503363A0 (US20100223739A1-20100909-C00025.png)
FR (1) FR2488397A1 (US20100223739A1-20100909-C00025.png)
GB (1) GB2079466B (US20100223739A1-20100909-C00025.png)
IT (1) IT1137944B (US20100223739A1-20100909-C00025.png)

Families Citing this family (131)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411577A (en) * 1980-03-07 1983-10-25 Rapistan Division, Lear Siegler, Inc. Vehicle sensor monitoring system
US4545029A (en) * 1981-09-11 1985-10-01 Leeds & Northrup Company Remote correlation of sequence of events
US4490804A (en) * 1982-05-03 1984-12-25 Motorola, Inc. Self-correcting throttle position sensing circuit
JPS5937605U (ja) * 1982-08-31 1984-03-09 横河電機株式会社 変化率警報回路
US4599698A (en) * 1983-05-02 1986-07-08 United Technologies Corporation Aircraft trim actuator shutdown monitor system and method
JPS60117306A (ja) * 1983-11-30 1985-06-24 Nachi Fujikoshi Corp サ−ボ機構の制御装置
US4644479A (en) * 1984-07-31 1987-02-17 Westinghouse Electric Corp. Diagnostic apparatus
GB8521135D0 (en) * 1985-08-23 1985-10-02 Holset Engineering Co Measuring device calibration
US4660386A (en) * 1985-09-18 1987-04-28 Hansen John C Diagnostic system for detecting faulty sensors in liquid chiller air conditioning system
US4653280A (en) * 1985-09-18 1987-03-31 Hansen John C Diagnostic system for detecting faulty sensors in a refrigeration system
JPS6277002A (ja) * 1985-09-30 1987-04-09 Mitsubishi Electric Corp 列車用計測センサ検査装置
US4833613A (en) * 1986-04-18 1989-05-23 Eaton Corporation Method for controlling AMT system including throttle position sensor signal fault detection and tolerance
JPH0627598B2 (ja) * 1986-08-13 1994-04-13 三菱重工業株式会社 冷凍装置における圧力センサの故障診断方法
FR2611915B1 (fr) * 1987-02-27 1989-07-07 Mace Jacky Detecteur d'anomalie de fonctionnement d'un dispositif electrique, electrotechnique ou electronique
US4845475A (en) * 1987-11-17 1989-07-04 The Boeing Company Automatic testing of position sensing devices employing stored sensed position
JPH0738011B2 (ja) * 1988-05-16 1995-04-26 株式会社日立製作所 高圧電力機器の異常診断システム
JP2577981B2 (ja) * 1988-12-14 1997-02-05 株式会社堀場製作所 プロセス用イオン測定装置
US5025378A (en) * 1989-04-03 1991-06-18 Honeywell Inc. Horizontal stabilizer motion detector
JPH0351376U (US20100223739A1-20100909-C00025.png) * 1989-09-27 1991-05-20
US5394341A (en) * 1993-03-25 1995-02-28 Ford Motor Company Apparatus for detecting the failure of a sensor
US5369957A (en) * 1993-12-30 1994-12-06 Thermo King Corporation Method and apparatus for checking the position and condition of a temperature sensor in a refrigeration system
US5496450A (en) * 1994-04-13 1996-03-05 Blumenthal; Robert N. Multiple on-line sensor systems and methods
US5700090A (en) * 1996-01-03 1997-12-23 Rosemount Inc. Temperature sensor transmitter with sensor sheath lead
US5746511A (en) * 1996-01-03 1998-05-05 Rosemount Inc. Temperature transmitter with on-line calibration using johnson noise
US6539267B1 (en) 1996-03-28 2003-03-25 Rosemount Inc. Device in a process system for determining statistical parameter
US6654697B1 (en) 1996-03-28 2003-11-25 Rosemount Inc. Flow measurement with diagnostics
US7630861B2 (en) 1996-03-28 2009-12-08 Rosemount Inc. Dedicated process diagnostic device
US7949495B2 (en) 1996-03-28 2011-05-24 Rosemount, Inc. Process variable transmitter with diagnostics
US8290721B2 (en) 1996-03-28 2012-10-16 Rosemount Inc. Flow measurement diagnostics
US7085610B2 (en) 1996-03-28 2006-08-01 Fisher-Rosemount Systems, Inc. Root cause diagnostics
US7623932B2 (en) * 1996-03-28 2009-11-24 Fisher-Rosemount Systems, Inc. Rule set for root cause diagnostics
US6017143A (en) * 1996-03-28 2000-01-25 Rosemount Inc. Device in a process system for detecting events
US7254518B2 (en) * 1996-03-28 2007-08-07 Rosemount Inc. Pressure transmitter with diagnostics
US6907383B2 (en) 1996-03-28 2005-06-14 Rosemount Inc. Flow diagnostic system
US6601005B1 (en) 1996-11-07 2003-07-29 Rosemount Inc. Process device diagnostics using process variable sensor signal
US6449574B1 (en) 1996-11-07 2002-09-10 Micro Motion, Inc. Resistance based process control device diagnostics
US6434504B1 (en) 1996-11-07 2002-08-13 Rosemount Inc. Resistance based process control device diagnostics
US6754601B1 (en) 1996-11-07 2004-06-22 Rosemount Inc. Diagnostics for resistive elements of process devices
US5828567A (en) * 1996-11-07 1998-10-27 Rosemount Inc. Diagnostics for resistance based transmitter
US5956663A (en) * 1996-11-07 1999-09-21 Rosemount, Inc. Signal processing technique which separates signal components in a sensor for sensor diagnostics
US6519546B1 (en) 1996-11-07 2003-02-11 Rosemount Inc. Auto correcting temperature transmitter with resistance based sensor
JP4643771B2 (ja) * 1996-12-31 2011-03-02 ローズマウント インコーポレイテッド フィールド装置からの制御信号の有効性を確認するための方法および装置
CA2306767C (en) 1997-10-13 2007-05-01 Rosemount Inc. Communication technique for field devices in industrial processes
DE19756510C1 (de) * 1997-12-19 2000-02-03 Kendro Lab Prod Gmbh Verfahren zur Regelung der Temperatur eines in einem Behandlungsraum zu behandelnden Gutes sowie Vorrichtung
US6611775B1 (en) 1998-12-10 2003-08-26 Rosemount Inc. Electrode leakage diagnostics in a magnetic flow meter
US6615149B1 (en) 1998-12-10 2003-09-02 Rosemount Inc. Spectral diagnostics in a magnetic flow meter
US6298454B1 (en) 1999-02-22 2001-10-02 Fisher-Rosemount Systems, Inc. Diagnostics in a process control system
US6633782B1 (en) 1999-02-22 2003-10-14 Fisher-Rosemount Systems, Inc. Diagnostic expert in a process control system
US8044793B2 (en) 2001-03-01 2011-10-25 Fisher-Rosemount Systems, Inc. Integrated device alerts in a process control system
US7562135B2 (en) * 2000-05-23 2009-07-14 Fisher-Rosemount Systems, Inc. Enhanced fieldbus device alerts in a process control system
US7206646B2 (en) 1999-02-22 2007-04-17 Fisher-Rosemount Systems, Inc. Method and apparatus for performing a function in a plant using process performance monitoring with process equipment monitoring and control
US6356191B1 (en) 1999-06-17 2002-03-12 Rosemount Inc. Error compensation for a process fluid temperature transmitter
US7010459B2 (en) 1999-06-25 2006-03-07 Rosemount Inc. Process device diagnostics using process variable sensor signal
JP4824234B2 (ja) 1999-07-01 2011-11-30 ローズマウント インコーポレイテッド ２線式温度送信機およびプロセス温度測定方法
US6505517B1 (en) 1999-07-23 2003-01-14 Rosemount Inc. High accuracy signal processing for magnetic flowmeter
US6701274B1 (en) 1999-08-27 2004-03-02 Rosemount Inc. Prediction of error magnitude in a pressure transmitter
US6556145B1 (en) 1999-09-24 2003-04-29 Rosemount Inc. Two-wire fluid temperature transmitter with thermocouple diagnostics
JP2002022766A (ja) * 2000-07-07 2002-01-23 Hino Motors Ltd センサの故障判定装置
US6735484B1 (en) 2000-09-20 2004-05-11 Fargo Electronics, Inc. Printer with a process diagnostics system for detecting events
US20040063710A1 (en) * 2000-11-22 2004-04-01 Tomiya Mano Ophthalmological preparations
EP1364263B1 (en) 2001-03-01 2005-10-26 Fisher-Rosemount Systems, Inc. Data sharing in a process plant
US7720727B2 (en) 2001-03-01 2010-05-18 Fisher-Rosemount Systems, Inc. Economic calculations in process control system
US8073967B2 (en) 2002-04-15 2011-12-06 Fisher-Rosemount Systems, Inc. Web services-based communications for use with process control systems
DE60232711D1 (de) 2001-03-01 2009-08-06 Fisher Rosemount Systems Inc Bezugsmarkierungtechnik zur schätzung und benutzung von abbau-niveaux in einer prozessanlage
US6970003B2 (en) 2001-03-05 2005-11-29 Rosemount Inc. Electronics board life prediction of microprocessor-based transmitters
US6915459B2 (en) * 2001-03-27 2005-07-05 Texas Instruments Incorporated Active failsafe detection for differential receiver circuits
US6629059B2 (en) 2001-05-14 2003-09-30 Fisher-Rosemount Systems, Inc. Hand held diagnostic and communication device with automatic bus detection
US6772036B2 (en) 2001-08-30 2004-08-03 Fisher-Rosemount Systems, Inc. Control system using process model
DE10145485B4 (de) * 2001-09-14 2007-12-27 Siemens Ag Verfahren und Vorrichtung zur Diagnose eines Sensors
BRPI0214729B1 (pt) * 2001-12-06 2015-09-22 Fisher Rosemount Systems Inc ferramenta de manutenção de campo intrinsecamente segura
US7426452B2 (en) * 2001-12-06 2008-09-16 Fisher-Rosemount Systems. Inc. Dual protocol handheld field maintenance tool with radio-frequency communication
US20030204373A1 (en) * 2001-12-06 2003-10-30 Fisher-Rosemount Systems, Inc. Wireless communication method between handheld field maintenance tools
US20030229472A1 (en) * 2001-12-06 2003-12-11 Kantzes Christopher P. Field maintenance tool with improved device description communication and storage
US7027952B2 (en) * 2002-03-12 2006-04-11 Fisher-Rosemount Systems, Inc. Data transmission method for a multi-protocol handheld field maintenance tool
US7039744B2 (en) * 2002-03-12 2006-05-02 Fisher-Rosemount Systems, Inc. Movable lead access member for handheld field maintenance tool
DE10244905A1 (de) * 2002-09-25 2004-04-08 Austriamicrosystems Ag Regelvorrichtung mit einem Regelkreis und einem Sensor und Verfahren zum Betrieb der Regelvorrichtung
US7228249B2 (en) * 2002-11-19 2007-06-05 General Motors Corporation Methods and apparatus for determining the condition of a sensor and identifying the failure thereof
US10261506B2 (en) * 2002-12-05 2019-04-16 Fisher-Rosemount Systems, Inc. Method of adding software to a field maintenance tool
US6816816B2 (en) * 2003-02-12 2004-11-09 Bently Nevada, Llc Transducer fault detection system using slew rate measurements: apparatus and method
US8216717B2 (en) * 2003-03-06 2012-07-10 Fisher-Rosemount Systems, Inc. Heat flow regulating cover for an electrical storage cell
US7512521B2 (en) * 2003-04-30 2009-03-31 Fisher-Rosemount Systems, Inc. Intrinsically safe field maintenance tool with power islands
US7054695B2 (en) 2003-05-15 2006-05-30 Fisher-Rosemount Systems, Inc. Field maintenance tool with enhanced scripts
US8874402B2 (en) * 2003-05-16 2014-10-28 Fisher-Rosemount Systems, Inc. Physical memory handling for handheld field maintenance tools
US7526802B2 (en) * 2003-05-16 2009-04-28 Fisher-Rosemount Systems, Inc. Memory authentication for intrinsically safe field maintenance tools
US7199784B2 (en) * 2003-05-16 2007-04-03 Fisher Rosemount Systems, Inc. One-handed operation of a handheld field maintenance tool
US6925419B2 (en) * 2003-05-16 2005-08-02 Fisher-Rosemount Systems, Inc. Intrinsically safe field maintenance tool with removable battery pack
US7036386B2 (en) * 2003-05-16 2006-05-02 Fisher-Rosemount Systems, Inc. Multipurpose utility mounting assembly for handheld field maintenance tool
EP1646864B1 (en) 2003-07-18 2018-11-07 Rosemount Inc. Process diagnostics
US7018800B2 (en) 2003-08-07 2006-03-28 Rosemount Inc. Process device with quiescent current diagnostics
US7627441B2 (en) 2003-09-30 2009-12-01 Rosemount Inc. Process device with vibration based diagnostics
US7523667B2 (en) 2003-12-23 2009-04-28 Rosemount Inc. Diagnostics of impulse piping in an industrial process
US6920799B1 (en) 2004-04-15 2005-07-26 Rosemount Inc. Magnetic flow meter with reference electrode
US7046180B2 (en) 2004-04-21 2006-05-16 Rosemount Inc. Analog-to-digital converter with range error detection
US8005647B2 (en) 2005-04-08 2011-08-23 Rosemount, Inc. Method and apparatus for monitoring and performing corrective measures in a process plant using monitoring data with corrective measures data
US9201420B2 (en) 2005-04-08 2015-12-01 Rosemount, Inc. Method and apparatus for performing a function in a process plant using monitoring data with criticality evaluation data
US8112565B2 (en) 2005-06-08 2012-02-07 Fisher-Rosemount Systems, Inc. Multi-protocol field device interface with automatic bus detection
US7272531B2 (en) 2005-09-20 2007-09-18 Fisher-Rosemount Systems, Inc. Aggregation of asset use indices within a process plant
US20070068225A1 (en) 2005-09-29 2007-03-29 Brown Gregory C Leak detector for process valve
ES2281267B1 (es) * 2005-11-28 2008-09-01 Eugenio Bonilla Benegas Sistema de monitorizacion del amasado de conglomerados.
US7953501B2 (en) 2006-09-25 2011-05-31 Fisher-Rosemount Systems, Inc. Industrial process control loop monitor
US8774204B2 (en) * 2006-09-25 2014-07-08 Fisher-Rosemount Systems, Inc. Handheld field maintenance bus monitor
US8788070B2 (en) 2006-09-26 2014-07-22 Rosemount Inc. Automatic field device service adviser
JP2010505121A (ja) 2006-09-29 2010-02-18 ローズマウント インコーポレイテッド 検証を備える磁気流量計
US7321846B1 (en) 2006-10-05 2008-01-22 Rosemount Inc. Two-wire process control loop diagnostics
US20100243791A1 (en) * 2006-11-30 2010-09-30 Honeywell International Inc. Gyroscopic failure detection in a navigation device through sensor correlation
JP5097820B2 (ja) * 2007-06-13 2012-12-12 フィッシャー−ローズマウント システムズ，インコーポレイテッド 携帯用フィールドメンテナンス機器の機能改善方法
US8898036B2 (en) 2007-08-06 2014-11-25 Rosemount Inc. Process variable transmitter with acceleration sensor
US8301676B2 (en) 2007-08-23 2012-10-30 Fisher-Rosemount Systems, Inc. Field device with capability of calculating digital filter coefficients
US7702401B2 (en) 2007-09-05 2010-04-20 Fisher-Rosemount Systems, Inc. System for preserving and displaying process control data associated with an abnormal situation
US7590511B2 (en) 2007-09-25 2009-09-15 Rosemount Inc. Field device for digital process control loop diagnostics
US8055479B2 (en) 2007-10-10 2011-11-08 Fisher-Rosemount Systems, Inc. Simplified algorithm for abnormal situation prevention in load following applications including plugged line diagnostics in a dynamic process
US7933725B2 (en) * 2007-10-31 2011-04-26 The Boeing Company Using sensor spectral energy to detect and/or isolate sensor faults
US7827008B2 (en) * 2008-10-21 2010-11-02 General Electric Company System including phase signal saving during anomaly and related method
JP4386143B1 (ja) * 2009-02-05 2009-12-16 パナソニック株式会社 センサ装置
US8131508B2 (en) * 2009-02-05 2012-03-06 Panasonic Corporation Sensor apparatus
US7921734B2 (en) * 2009-05-12 2011-04-12 Rosemount Inc. System to detect poor process ground connections
US9014944B2 (en) * 2009-06-18 2015-04-21 United Technologies Corporation Turbine engine speed and vibration sensing system
FR2947052B1 (fr) * 2009-06-23 2011-07-29 Thales Sa Procede de mesure de vitesse d'un aeronef, par anemometrie laser doppler
US9207670B2 (en) 2011-03-21 2015-12-08 Rosemount Inc. Degrading sensor detection implemented within a transmitter
US9927788B2 (en) 2011-05-19 2018-03-27 Fisher-Rosemount Systems, Inc. Software lockout coordination between a process control system and an asset management system
CN103389434B (zh) * 2012-05-07 2017-11-17 布里斯托尔D/B/A远程自动化解决方案公司 检测电阻温度检测器的泄漏电流的方法和装置
US9052240B2 (en) 2012-06-29 2015-06-09 Rosemount Inc. Industrial process temperature transmitter with sensor stress diagnostics
US9207129B2 (en) 2012-09-27 2015-12-08 Rosemount Inc. Process variable transmitter with EMF detection and correction
US9602122B2 (en) 2012-09-28 2017-03-21 Rosemount Inc. Process variable measurement noise diagnostic
US9132911B2 (en) * 2013-02-28 2015-09-15 Sikorsky Aircraft Corporation Damage adaptive control
US9728014B2 (en) * 2013-04-23 2017-08-08 B. G. Negev Technologies And Applications Ltd. Sensor fault detection and diagnosis for autonomous systems
FR3007162B1 (fr) * 2013-06-17 2016-12-02 Airbus Operations Sas Procede et dispositif de detection d'une anomalie sur un aeronef.
KR20170076456A (ko) * 2015-12-21 2017-07-04 삼성전자주식회사 초음파 영상장치 및 초음파 영상장치의 제어방법
US10698033B2 (en) 2017-12-21 2020-06-30 Robert Bosch Battery Systems, Llc Sensor fault detection using paired sample correlation
CN111338322A (zh) * 2020-03-17 2020-06-26 许昌许继风电科技有限公司 一种主控柜测试系统及测试方法
CN113340344B (zh) * 2021-05-27 2023-03-24 中国建筑第四工程局有限公司 基于数字孪生技术的液压爬模智能监测控制预警系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1365590A (fr) * 1963-06-19 1964-07-03 Sperry Rand Corp Système de commande pour avions ou engins aériens analogues
US3505641A (en) * 1965-10-20 1970-04-07 Honeywell Inc Aircraft condition control apparatus with redundant sensors
FR1502774A (fr) * 1966-09-02 1967-11-24 Sud Aviation Dispositif améliorant dans le domaine latéral la sécurité des avions au cours des atterrissages automatiques
US3493836A (en) * 1967-03-30 1970-02-03 Sperry Rand Corp Static and dynamic failure monitor for aircraft automatic pilots
US3593012A (en) * 1969-01-17 1971-07-13 Simmonds Precision Products Engine life recorder system using engine temperature and rpm data
US3584507A (en) * 1970-03-06 1971-06-15 Avco Corp Engine usage indicator
US3678256A (en) * 1970-10-05 1972-07-18 Mc Donnell Douglas Corp Performance and failure assessment monitor
US3750465A (en) * 1971-09-09 1973-08-07 Howell Instruments Engine performance indicator
US3867717A (en) * 1973-04-25 1975-02-18 Gen Electric Stall warning system for a gas turbine engine
US3872292A (en) * 1973-07-26 1975-03-18 Us Navy Sonic means for detecting compressor stall
JPS592564Y2 (ja) * 1976-11-25 1984-01-24 横河電機株式会社 ２重化入力信号源の異常検出装置
US4176396A (en) * 1977-09-23 1979-11-27 The Charles Stark Draper Laboratory, Inc. Apparatus for directly measuring machine tool wear

Also Published As

Publication number Publication date
AU7215481A (en) 1982-01-07
DE3124082C2 (US20100223739A1-20100909-C00025.png) 1993-08-05
FR2488397A1 (fr) 1982-02-12
ES8204168A1 (es) 1982-04-16
IT8122597A0 (it) 1981-06-26
GB2079466B (en) 1984-03-07
US4337516A (en) 1982-06-29
FR2488397B1 (US20100223739A1-20100909-C00025.png) 1984-04-20
AU542308B2 (en) 1985-02-14
DE3124082A1 (de) 1982-03-25
JPS5741711A (en) 1982-03-09
CA1164067A (en) 1984-03-20
ES503363A0 (es) 1982-04-16
GB2079466A (en) 1982-01-20
JPH0551924B2 (US20100223739A1-20100909-C00025.png) 1993-08-04

Similar Documents

Publication Publication Date Title
IT1137944B (it) Sistema di rilevamento di guasto di un sensore mediante sorveglianza della sua attivita'
IT1118856B (it) Sistema di rivelazione a trasduttoro d'intrusione multipli
IT8167724A0 (it) Sistema di pesatura a combinazioni
IT1205351B (it) Sistema sensore ottico a duplice percorso
MX162841B (es) Mejoras a un sistema ponderador de senales autoadaptable
ES550823A0 (es) Un sistema detector de intrusion
ES547514A0 (es) Un sistema opto-electronico de deteccion de errores de enfo-que
BR8103624A (pt) Sistema de vigilancia
BR8205927A (pt) Sistema de contagem de dinheiro
IT1167787B (it) Disposizione di calcolo per un elaboratore di segnali
IT1163062B (it) Sensore a sensibilita' direzionale
GB2015223B (en) Surveillance system particularly for detecting the presence of moving persons in an area being monitored
MX153689A (es) Mejoras a sistema de deteccion de metal
BR8102234A (pt) Sistema de monitorizacao de posicao
BE878598A (fr) Systeme d'alarme a detecteur acoustique
IT1153483B (it) Apparecchiatura per rivelare la presenza di segnali multifrequenziali in un segnale ricevuto
IT1210603B (it) Sistema avvisatore di intrusione
IT1168165B (it) Dispositivo idraulico per la sorveglianza di un collegamento
IT1145237B (it) Sistema di rilevazione
IT1100047B (it) Sensore per un sistema di frenatura e metodo
IT8024670A0 (it) Impianto per la rivelazione dell'inviluppo di un segnale.
IT1137930B (it) Sistema di sorveglianza di microprocessore
IT1145553B (it) Sistema per la elaborazione di segnali
IT8667585A0 (it) Sistema di rilevazione di intrusione applicabile in particolare a un sistema di allarme
IT1151258B (it) Sistema per il ricupero di un segnale video

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970530