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BR7605541A - Circuito detector de limiar - Google Patents

Circuito detector de limiar

Info

Publication number
BR7605541A
BR7605541A BR7605541A BR7605541A BR7605541A BR 7605541 A BR7605541 A BR 7605541A BR 7605541 A BR7605541 A BR 7605541A BR 7605541 A BR7605541 A BR 7605541A BR 7605541 A BR7605541 A BR 7605541A
Authority
BR
Brazil
Prior art keywords
detector circuit
threshold detector
threshold
circuit
detector
Prior art date
Application number
BR7605541A
Other languages
English (en)
Inventor
P Rabe
J Hile
Original Assignee
Gen Motors 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 Gen Motors Corp filed Critical Gen Motors Corp
Publication of BR7605541A publication Critical patent/BR7605541A/pt

Links

Classifications

    • 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
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16585—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 for individual pulses, ripple or noise and other applications where timing or duration is of importance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/266—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors measuring circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
BR7605541A 1975-08-27 1976-08-24 Circuito detector de limiar BR7605541A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/608,076 US4001676A (en) 1975-08-27 1975-08-27 Solid-state threshold detector

Publications (1)

Publication Number Publication Date
BR7605541A true BR7605541A (pt) 1978-03-21

Family

ID=24434933

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7605541A BR7605541A (pt) 1975-08-27 1976-08-24 Circuito detector de limiar

Country Status (2)

Country Link
US (1) US4001676A (pt)
BR (1) BR7605541A (pt)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2617730C2 (de) * 1976-04-23 1982-04-29 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zur Überwachung des Tintenvorrates in Tintenschreibeinrichtungen
US4157539A (en) * 1976-10-14 1979-06-05 The Singer Company Charge rate, capacitive switch system
US4149231A (en) * 1977-05-04 1979-04-10 Bunker Ramo Corporation Capacitance-to-voltage transformation circuit
US4194395A (en) * 1978-12-21 1980-03-25 Ford Motor Company Capacitive liquid level sensor
US4176553A (en) * 1978-12-21 1979-12-04 Ford Motor Company Liquid level measuring system
US4265262A (en) * 1979-03-19 1981-05-05 William Hotine Fluent material level control system
US4292620A (en) * 1979-06-13 1981-09-29 Pagane Warren H Fuel level monitoring engine control and vehicle theft inhibiting device
US4316174A (en) * 1979-12-26 1982-02-16 General Motors Corporation Threshold detector for a condition indication
US4488823A (en) * 1979-12-31 1984-12-18 Whirlpool Corporation Selective temperature control system
USRE33119E (en) * 1979-12-31 1989-11-28 Whirlpool Corporation Selective temperature control system
US4328573A (en) * 1980-05-12 1982-05-04 Nad International Precision phonocartridge interface
US4517547A (en) * 1981-11-20 1985-05-14 Motorola, Inc. Water-in-fuel sensor circuit and method
US4470008A (en) * 1982-07-02 1984-09-04 Ryochi Kato Capacitance sensor
US4875497A (en) * 1984-04-23 1989-10-24 Worthington Ralph T Capacitance liquid level sensing and touch control system
US4567412A (en) * 1984-11-29 1986-01-28 General Motors Corporation Automatic wiper actuator for a vehicle window
US4638305A (en) * 1985-03-22 1987-01-20 General Motors Corporation Apparatus for detecting water in fuel
US4742244A (en) * 1986-10-15 1988-05-03 Itt Avionics Electronic float switch apparatus
US4825147A (en) * 1988-09-14 1989-04-25 Sencore, Inc. Capacitance measuring method and apparatus
US4915084A (en) * 1988-11-08 1990-04-10 General Motors Corporation Combustion engine with multi-fuel capability
US4971015A (en) * 1988-11-08 1990-11-20 General Motors Corporation Combustion engine with multi-fuel capability
US4949069A (en) * 1988-11-09 1990-08-14 Sparton Corporation Dynamic liquid level indicator
US5182545A (en) * 1989-01-06 1993-01-26 Standex International Corporation Fluid level sensor having capacitive sensor
US5042299A (en) * 1990-07-23 1991-08-27 Iimorrow, Inc. Capacitive fluid level sensor
US5089783A (en) * 1990-11-16 1992-02-18 General Motors Corporation Capacitive fuel composition sensor with padding capacitor
US5231358A (en) * 1990-11-16 1993-07-27 General Motors Corp. Capacitive fuel composition sensor with slow oscillator and high speed switch
US5103184A (en) * 1990-11-16 1992-04-07 General Motors Corporation Capacitive fuel composition sensor with ground isolation
GB2254150A (en) * 1991-03-23 1992-09-30 Ford Motor Co Low liquid level warning system
US5255656A (en) * 1991-06-27 1993-10-26 Borg-Warner Automotive, Inc. Alcohol concentration sensor for automotive fuels
US5537109A (en) * 1993-05-28 1996-07-16 General Scanning, Inc. Capacitive transducing with feedback
US5541523A (en) * 1994-09-19 1996-07-30 Ford Motor Company System for detecting operability of an airbag squib resistor
US5754963A (en) * 1996-07-30 1998-05-19 Hitachi America, Ltd. Method and apparatus for diagnosing and isolating faulty sensors in a redundant sensor system
US6014211A (en) * 1998-01-20 2000-01-11 Laser Reference Device and method for providing a laser level plane
US7006078B2 (en) * 2002-05-07 2006-02-28 Mcquint, Inc. Apparatus and method for sensing the degree and touch strength of a human body on a sensor
PL204266B1 (pl) * 2003-02-07 2009-12-31 Elektroniczny Zak & Lstrok Ad Sposób i układ elektroniczny do wykrywania obecności środowiska przewodzącego lub dielektrycznego o przenikalności dielektrycznej większej od powietrza

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS539542B2 (pt) * 1972-09-21 1978-04-06
US3863147A (en) * 1973-02-16 1975-01-28 Jensen Iii Owen F Capacitance sensing apparatus
US3931610A (en) * 1973-11-29 1976-01-06 Teletype Corporation Capacitive keyswitch sensor and method

Also Published As

Publication number Publication date
US4001676A (en) 1977-01-04

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