FR2374649A1 - Circuit de detection d'une variation de tension - Google Patents

Circuit de detection d'une variation de tension

Info

Publication number
FR2374649A1
FR2374649A1 FR7738046A FR7738046A FR2374649A1 FR 2374649 A1 FR2374649 A1 FR 2374649A1 FR 7738046 A FR7738046 A FR 7738046A FR 7738046 A FR7738046 A FR 7738046A FR 2374649 A1 FR2374649 A1 FR 2374649A1
Authority
FR
France
Prior art keywords
voltage variation
detection circuit
variation detection
comparators
amplifiers
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
FR7738046A
Other languages
English (en)
Other versions
FR2374649B1 (fr
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.)
JEFFCOAT JAMES
Original Assignee
JEFFCOAT JAMES
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 JEFFCOAT JAMES filed Critical JEFFCOAT JAMES
Publication of FR2374649A1 publication Critical patent/FR2374649A1/fr
Application granted granted Critical
Publication of FR2374649B1 publication Critical patent/FR2374649B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/02—Input circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • B65H63/032—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic
    • B65H63/0321—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators
    • B65H63/0324—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators using photo-electric sensing means, i.e. the defect signal is a variation of light energy
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/14—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage
    • 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
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
    • H03K5/24—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Nonlinear Science (AREA)
  • Geophysics (AREA)
  • Textile Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Looms (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

L'invention concerne les circuits de détection d'une variation de tension. Le circuit de l'invention comprend essentiellement deux amplificateurs opérationnels 22 et 24 qui attaquent des comparateurs de tension respectifs 38 et 32. Les signaux de sortie 40 et 42 des comparateurs réagissent à des variations, dans des sens respectifs, des signaux qui sont appliqués aux entrées des amplificateurs 22 et 24. Application à la détection de la rupture d'un fil dans une machine textile.
FR7738046A 1976-12-16 1977-12-16 Circuit de detection d'une variation de tension Granted FR2374649A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/751,216 US4079250A (en) 1976-12-16 1976-12-16 Programmable voltage sensing circuit

Publications (2)

Publication Number Publication Date
FR2374649A1 true FR2374649A1 (fr) 1978-07-13
FR2374649B1 FR2374649B1 (fr) 1982-11-26

Family

ID=25021004

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738046A Granted FR2374649A1 (fr) 1976-12-16 1977-12-16 Circuit de detection d'une variation de tension

Country Status (7)

Country Link
US (1) US4079250A (fr)
JP (1) JPS53114468A (fr)
CA (1) CA1100592A (fr)
DE (1) DE2756058A1 (fr)
FR (1) FR2374649A1 (fr)
GB (1) GB1567586A (fr)
IT (1) IT1090818B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306193A (en) * 1979-05-08 1981-12-15 Lasertron Company Comparison circuit for alignment apparatus
JPS57208465A (en) * 1981-06-18 1982-12-21 Pioneer Electronic Corp Discriminating circuit for frequency
GB8318785D0 (en) * 1983-07-12 1983-08-10 Herga Electric Control system
CA2312516C (fr) * 2000-06-27 2004-03-02 Ibm Canada Limited-Ibm Canada Limitee Emetteur-recepteur a infrarouge avec sortie analogique isolee
US6632415B2 (en) 2001-04-09 2003-10-14 Chevron U.S.A. Inc. Methods for making molecular sieves
US8111388B2 (en) 2010-08-04 2012-02-07 Oldenburg Group Incorporated Luminous flux depreciation notification system for light fixtures incorporating light emitting diode sources
CN117054796B (zh) * 2023-10-11 2023-12-26 成都光创联科技有限公司 一种光器件测试电路与方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760184A (en) * 1972-03-10 1973-09-18 Sick Erwin Fa Photoelectric monitoring device for pluralities of threads
DE2329937A1 (de) * 1973-06-13 1975-01-16 Visomat Geraete Gmbh Strahlenschranke
FR2304706A1 (fr) * 1975-03-21 1976-10-15 Sulzer Ag Casse-trame opto-electronique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931513A (en) * 1974-09-23 1976-01-06 Ampex Corporation Sensing circuit for tape position markers
US3943367A (en) * 1975-06-10 1976-03-09 The United States Of America As Represented By The Secretary Of The Army High frequency optically coupled differential voltage probe with logarithmic response

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760184A (en) * 1972-03-10 1973-09-18 Sick Erwin Fa Photoelectric monitoring device for pluralities of threads
DE2329937A1 (de) * 1973-06-13 1975-01-16 Visomat Geraete Gmbh Strahlenschranke
FR2304706A1 (fr) * 1975-03-21 1976-10-15 Sulzer Ag Casse-trame opto-electronique

Also Published As

Publication number Publication date
CA1100592A (fr) 1981-05-05
IT1090818B (it) 1985-06-26
FR2374649B1 (fr) 1982-11-26
DE2756058A1 (de) 1978-07-06
GB1567586A (en) 1980-05-21
JPS53114468A (en) 1978-10-05
US4079250A (en) 1978-03-14

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Legal Events

Date Code Title Description
ST Notification of lapse