EP0699614B1 - Procédé et dispositif de contrÔle du déroulement d'une bobine - Google Patents

Procédé et dispositif de contrÔle du déroulement d'une bobine Download PDF

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Publication number
EP0699614B1
EP0699614B1 EP19950401965 EP95401965A EP0699614B1 EP 0699614 B1 EP0699614 B1 EP 0699614B1 EP 19950401965 EP19950401965 EP 19950401965 EP 95401965 A EP95401965 A EP 95401965A EP 0699614 B1 EP0699614 B1 EP 0699614B1
Authority
EP
European Patent Office
Prior art keywords
reel
signal
unwinding
turns
wire
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 - Lifetime
Application number
EP19950401965
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0699614A1 (fr
Inventor
Francis Boue
Gilles Lacaisse
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.)
Airbus Group SAS
Original Assignee
Airbus Group SAS
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Filing date
Publication date
Application filed by Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0699614A1 publication Critical patent/EP0699614A1/fr
Application granted granted Critical
Publication of EP0699614B1 publication Critical patent/EP0699614B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H61/00—Applications of devices for metering predetermined lengths of running material
    • B65H61/005—Applications of devices for metering predetermined lengths of running material for measuring speed of running yarns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
    • F41F3/00—Rocket or torpedo launchers
    • F41F3/04—Rocket or torpedo launchers for rockets
    • F41F3/055—Umbilical connecting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
    • F42B15/01—Arrangements thereon for guidance or control
    • F42B15/04—Arrangements thereon for guidance or control using wire, e.g. for guiding ground-to-ground rockets

Definitions

  • the invention relates to a method for control the unwinding of a reel, as well as device implementing this method.
  • the method and the device according to the invention allow in particular to access information such as the frequency of unwinding the turns, the number of turns wound, the speed of unwinding the spool, the length of unwound thread, the number of layers of wire unwound from the spool, etc.
  • This process and this device apply to all techniques in which two objects moving away of each other remain connected, at least temporarily, by a wire. He finds an application preferred in the case of guided gear, in which information is transmitted, usually in both directions, between the machine and its firing point, in particular to allow remote control of this gadget.
  • the word “thread” indifferently designates any member capable of being rolled up on a coil, such as an electric wire, a fiber optic, cable, pipe, etc ...
  • the first category is based on the use of optical sensors operating without contact.
  • the second category is based on the break mechanical loops of electrical wires placed in the thickness of the coil.
  • the first category of known devices is illustrated in particular by document FR-A-2 533 689. It this is a particularly complex system which detects marks made on the unwinding cable of a winch. Such a system is practically not usable in the case of a very rapid progress of a very long wire.
  • Figure 1 of the document FR-A-2 675 250 also offers, in the application with wire-guided devices, determine the flight speed of the machine by means of an optical system which detects the presence of marks on the wire. It's about a technique ill-suited to mass production coils of fragile and very long wires. In Indeed, the achievement of the marks on the wire constitutes an extra delicate step, given the fragility of it.
  • Figure 2 illustrates the second category of devices known to carry out the monitoring of the unwinding of a reel.
  • This second category of devices is also illustrated by the document FR-A-1 308 884.
  • loops made of electrically conductive material in the coil, at predetermined levels.
  • the wire unwinding leads to successive breakage of each of the loops.
  • the wire feed control procedures belonging to this second category also present themselves many disadvantages.
  • integration of a number of loops electrically conductive in the coil is hardly compatible with mass production series.
  • the presence of these loops is results in increased reel resistance, which risk of breaking the wire when it is very fragile.
  • the main object of the invention is a method new, allowing to control the progress of a coil without the need to perform any prior marking on the wire, and without interference mechanical with the coil or its protective cover, so that the use of this process is without impact on coil manufacturing and wire unwinding.
  • this process using an audible signal allows non-contact measurement with wire and coil. he therefore has no influence on the course of this last. In addition, it does not require visual access to the coil, so that it allows the presence of a hood. In addition, no prior marking of the wire is necessary.
  • this process does not require either to introduce loops of material electrically conductor inside the coil. It does not increase therefore no risk of wire breakage during unfolding. Furthermore, it does not have to be taken into account during the manufacture of the coils.
  • the sound signal is picked up at a location laterally offset from the axis of the reel and located near a feed end of the latter.
  • the information related to the frequency of wire feed is chosen from the group comprising: the frequency of unwinding the coil turns, the number of turns the unwinding speed of the reel, the length of wire unwound from the spool, the number of layers of wire unwound from the spool, and the speed of relative displacement between two objects linked by the wire.
  • the means for picking up the signal sound include a microphone, preferably placed on the side of the spool, near one end unwinding the latter.
  • the microphone can also be located near the coil or inside of the wound core.
  • These means further include a sound level meter transforming a generated pressure signal by the microphone into an electrical signal constituting said periodic signal.
  • the processing means include a converter frequency-voltage connected to the output of means for picking up the sound signal and delivering a signal representative of the frequency of coil turns.
  • the processing means can further understand a multiplier circuit connected to the output of the frequency-voltage converter, multiplying the signal representative of the frequency of unwinding of the turns by a corresponding coefficient the length of a turn, and delivering a representative signal the reel unwinding speed.
  • the means of treatment can also include an integrator circuit connected to the circuit output multiplier and delivering a signal representative of the length of wire unwound from the spool.
  • the processing means include a counter of pulses connected to the output of the means for picking up the sound signal and delivering a representative signal the number of turns unwound from the coil.
  • the processing means can further understand a multiplier circuit connected to the output of the pulse counter, multiplying the signal representative of the number of turns unwound by a coefficient corresponding to the length of a turn, and delivering a signal representative of the length of wire unwound from the spool.
  • the reference 10 designates so generally a coil such as a coil on board a wire-guided vehicle.
  • This coil has a mandrel 12 on which is wound a wire 14 shown during unfolding.
  • the coil 10 further comprises a cover protection 16 which surrounds the wound wire and does not allow the unwinding of the wire 14 only by one end of the coil, turned to the left in Figure 1.
  • a long length of wire 14 (several tens of kilometers) is wound on the mandrel 12 and the unwinding takes place at high speed.
  • the thread produced a noise which has a periodic character.
  • the duration of the period of this noise is equal to the time taken by the wire to unwind a turn of the coil 10.
  • the invention is based on this observation and consists in receiving the sound signal corresponding to this noise, then treat it to deduce one or more several pieces of information related to the frequency of wire feed turns of the coil 10 such as the speed of unwinding of the reel, the length of the thread unwound, etc ...
  • the microphone 18 is placed near coil 10 a microphone 18. More precisely, the microphone 18 is placed on the side of the coil 10, outside the cover 16, at a location laterally offset from the axis of the coil. In addition, the microphone 18 is placed close from the end of the coil 10 to which the wire 14 unwinds, i.e. near the end left of the spool in Figure 1.
  • Microphone 18 transforms the sound signal produced by unwinding the wire 14 into a pressure signal P (in ⁇ bars) whose evolution as a function of time t (in milliseconds) is illustrated as an example on Figure 2.
  • the pressure signal delivered by the microphone 18 oscillates between pressure values positive and negative according to a period T substantially equal to 4 ms. This means that a turn of wire 14 is unwound from coil 10 in 4 ms.
  • T substantially equal to 4 ms.
  • the pressure signal delivered by the microphone 18 is transmitted to a sound level meter 20 which transforms it into a electrical signal whose amplitude varies according to amplitude variations of the pressure signal admitted in this sound level meter.
  • the output of the sound level meter 20 is connected to a frequency / voltage converter 22 which outputs a signal whose amplitude is representative of the frequency of unwinding of the turns of the coil 10.
  • Figure 3 shows by way of example the variations of the signal f (in Hz) delivered by the converter frequency / voltage 22, as a function of time t (in ms).
  • the frequency of unwinding turns usually stays between 240 Hz and 260 Hz.
  • the output of the frequency / voltage converter is connected 22 to a multiplier circuit 24.
  • This circuit 24 multiplies the signal f delivered by the converter 22 by a coefficient corresponding to the length of a turn of the reel 10. Since this length varies according to the layer of wire being unfolding, a different coefficient is preferably applied for each layer of the coil. All coefficients of a determined coil 10 is memorized before the launch of the machine as well as the number of turns corresponding to each of the layers, so that the coefficient is automatically adapted as the wire unwinds 14.
  • the signal representative of the unwinding speed of the coil 10, delivered by the multiplier circuit 24, can also be used to calculate the length of wire 14 unwound from coil 10.
  • the signal from the multiplier circuit 24 is injected into a integrator circuit 26 whose output is representative of this length of wire unwound from the spool.
  • the microphone 18 picks up in continuous the sound signal produced by the course of the wire 14.
  • the means of treatment constituted by the frequency / voltage converter 22, the multiplier circuit 24 and the integrator circuit 26 continuously process the sound signal received by the microphone 18, so as to deduce therefrom an evolution of the frequency of unwinding the coil 10 as a function of the time as well as the corresponding evolutions of the reel unwinding speed and length of wire unwound as a function of time.
  • Figure 4 shows a set of measures comparable to the one just described with reference in Figure 1, but in which the processing of signal delivered by the sound level meter 20 takes place so different.
  • the microphone 18 is placed in the same way as above with respect to to coil 10.
  • the pressure signal delivered by microphone 18 is transformed into a signal electric by a sound level meter 20.
  • the electrical signal delivered by the sound level meter 20 is transmitted to a counter of pulses 28.
  • This pulse counter 28 delivers a output signal whose amplitude is representative of the evolution of the number of turns unwound from the reel 10, as a function of time.
  • This signal from the pulse counter 28 is injected into a multiplier circuit 30 which can be identical to the multiplier circuit 24 used in the first embodiment described with reference to Figure 1.
  • This multiplier circuit 30 allows, as the previous, multiply the input signal by a coefficient corresponding to the length of a turn of the thread 14 in progress.
  • the output of this circuit multiplier 30 is then representative of the length of wire unwound from coil 10 since the signal injected into the multiplier circuit is itself representative of the number of coils wound.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Textile Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
EP19950401965 1994-08-30 1995-08-28 Procédé et dispositif de contrÔle du déroulement d'une bobine Expired - Lifetime EP0699614B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9410425 1994-08-30
FR9410425A FR2724014A1 (fr) 1994-08-30 1994-08-30 Procede et dispositif de controle du deroulement d'une bobine.

Publications (2)

Publication Number Publication Date
EP0699614A1 EP0699614A1 (fr) 1996-03-06
EP0699614B1 true EP0699614B1 (fr) 1998-12-09

Family

ID=9466566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950401965 Expired - Lifetime EP0699614B1 (fr) 1994-08-30 1995-08-28 Procédé et dispositif de contrÔle du déroulement d'une bobine

Country Status (4)

Country Link
EP (1) EP0699614B1 (enrdf_load_stackoverflow)
DE (1) DE69506498T2 (enrdf_load_stackoverflow)
ES (1) ES2126849T3 (enrdf_load_stackoverflow)
FR (1) FR2724014A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0965555A1 (de) * 1998-06-16 1999-12-22 Thomas Lammers Rolle bahnförmigen Materials mit Signalerzeugungseinrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1308884A (fr) 1960-12-20 1962-11-09 Bolkow Entwicklungen Kg Dispositif de déclenchement monté sur un corps commandé à distance par l'inter médiaire d'un fil métallique
JPS57196157A (en) * 1981-05-28 1982-12-02 Mitsubishi Electric Corp Measurement of number of revolution
FR2533689B1 (fr) 1982-09-27 1987-04-24 Geoservices Procede et appareil pour mesurer la longueur de deroulement d'un cable enroule sur un tambour de treuil
IT1238996B (it) * 1990-02-14 1993-09-17 Zugnago Tessile Dispositivo di controllo presenza filo per filatoi
DE4112016C1 (en) * 1991-04-12 1992-08-06 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Flight path and/or actual speed detector - uses sensor at circular gap between fixed parts of missile to register speed of unwinding of guiding optical fibre
IL107895A0 (en) * 1993-12-06 1994-08-26 Israel State Acoustic method and device for measuring coil unwinding speed

Also Published As

Publication number Publication date
FR2724014A1 (fr) 1996-03-01
EP0699614A1 (fr) 1996-03-06
ES2126849T3 (es) 1999-04-01
DE69506498D1 (de) 1999-01-21
FR2724014B1 (enrdf_load_stackoverflow) 1997-02-14
DE69506498T2 (de) 1999-09-30

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