CH399033A - Electric motion scanner - Google Patents

Electric motion scanner

Info

Publication number
CH399033A
CH399033A CH222563A CH222563A CH399033A CH 399033 A CH399033 A CH 399033A CH 222563 A CH222563 A CH 222563A CH 222563 A CH222563 A CH 222563A CH 399033 A CH399033 A CH 399033A
Authority
CH
Switzerland
Prior art keywords
movement
capacitor
electric motion
motion scanner
scanner
Prior art date
Application number
CH222563A
Other languages
German (de)
Inventor
Widmer Hans
Original Assignee
Eidgenoessisches Flugzeugwerk
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 Eidgenoessisches Flugzeugwerk filed Critical Eidgenoessisches Flugzeugwerk
Priority to CH222563A priority Critical patent/CH399033A/en
Priority to GB616964A priority patent/GB1055692A/en
Publication of CH399033A publication Critical patent/CH399033A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • 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
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • G01D5/38—Forming the light into pulses by diffraction gratings
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/21—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device

Description

  

  Elektrischer Bewegungsabtaster    Für automatische Steuerungsvorgänge ist es oft  erwünscht, den Bewegungszustand eines mechani  schen Teiles festzustellen, ohne ihn mechanisch zu       beeinflussen.     



  Diese Forderung tritt z. B. auf bei Ermüdungs  maschinen, wo der Stillstandsmoment erfasst werden  soll; bei     Textilmaschinen    zur Überwachung der Be  wegung; bei Antriebsaggregaten zur Lösung des  Bremsvorganges im Stillstandsmoment, usw.  



  Das nachstehend als Ausführungsbeispiel der Er  findung beschriebene Gerät erfüllt diese Bedingungen.  Zur Betätigung des Gerätes ist es vorerst notwendig,  die zu kontrollierende Bewegung durch eine geeignete  Vorrichtung 1 in Lichtschwankungen dunkel - hell  umzuwandeln. Diese Lichtschwankungen sind so  lange vorhanden, solange noch Bewegung vorhanden  ist. Bei     Stillstand    bleibt eine beliebige, jedoch kon  stante Lichtstärke bestehen. Die so erhaltenen Licht  schwankungen werden mittelst eines Photowiderstan  des 2 in Spannungsschwankungen umgewandelt und  in einem Vertärker 3 verstärkt. Mit den dabei er  haltenen Stromimpulsen wird ein Kondensator 4 auf  geladen. Dessen Ladespannung dient dazu, über ei  nen Multivibrator oder eine Kaltkathodenröhre ein  Relais 5 zu steuern.

      Sobald und solange Bewegung vorhanden ist, ist  der Kondensator somit aufgeladen und das Relais  aufgezogen. Bei Stillstand fallen die Ladestromstösse  aus, und der Kondensator entlädt sich über einen  Widerstand. Dies hat zur Folge, dass der Multivibra  tor umkippt oder die Kaltkathodenröhre löscht, wor  auf das     Relais        abfällt    und die gewünschte Schaltung  ausführt.  



  Die Spannungsschwankungen zur Steuerung des  Gerätes können auch auf kapazitivem oder indukti  vem Weg gewonnen werden. Die Feinheit der Bewe  gungsabtastung kann durch geeignete     Dimensionie-          rung    der Abtastung bis in die Grössenordnung von       1/10o    mm/sec gewählt werden.



  Electrical motion scanner For automatic control processes, it is often desirable to determine the state of motion of a mechanical part without influencing it mechanically.



  This requirement occurs z. B. on machines with fatigue, where the stall torque is to be recorded; in textile machines for monitoring the movement; with drive units to solve the braking process at standstill, etc.



  The device described below as an embodiment of the invention He meets these conditions. To operate the device, it is first necessary to convert the movement to be controlled into light fluctuations from dark to light using a suitable device 1. These light fluctuations are present as long as there is still movement. At a standstill, any, but constant light intensity remains. The light fluctuations obtained in this way are converted into voltage fluctuations by means of a photoresistor 2 and amplified in an amplifier 3. With the current pulses he holds, a capacitor 4 is charged. Whose charging voltage is used to control a relay 5 via a multivibrator or a cold cathode tube.

      As soon as and as long as there is movement, the capacitor is charged and the relay is pulled up. At standstill, the charging currents fail and the capacitor discharges through a resistor. As a result, the multivibrator will tip over or the cold cathode tube will be extinguished, causing the relay to drop and performing the desired circuit.



  The voltage fluctuations for controlling the device can also be obtained capacitively or inductively. The fineness of the movement scanning can be selected by suitable dimensioning of the scanning down to the order of magnitude of 1 / 10o mm / sec.

Claims (1)

PATENTANSPRUCH Elektrischer Bewegungsabtaster, dadurch gekenn zeichnet, dass die zu überwachende Bewegung eines festen Körpers auf optischem, kapazitivem oder induktivem Weg in Spannungschwankungen und Stromimpulse umgewandelt wird, dass diese Impulse einen Kondensator in Funktion der abzutastenden Bewegung auflagen und dass der Ladezustand dieses Kondensators einen spannungsabhängigen Schalter betätigt. PATENT CLAIM Electric movement scanner, characterized in that the movement of a solid body to be monitored is converted into voltage fluctuations and current pulses in an optical, capacitive or inductive manner, that these pulses place a capacitor in function of the movement to be scanned and that the charge status of this capacitor is a voltage-dependent switch actuated.
CH222563A 1963-02-20 1963-02-20 Electric motion scanner CH399033A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH222563A CH399033A (en) 1963-02-20 1963-02-20 Electric motion scanner
GB616964A GB1055692A (en) 1963-02-20 1964-02-13 Electronic pause detector or movement sensing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH222563A CH399033A (en) 1963-02-20 1963-02-20 Electric motion scanner

Publications (1)

Publication Number Publication Date
CH399033A true CH399033A (en) 1966-03-31

Family

ID=4228788

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222563A CH399033A (en) 1963-02-20 1963-02-20 Electric motion scanner

Country Status (2)

Country Link
CH (1) CH399033A (en)
GB (1) GB1055692A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012000603A1 (en) * 2010-06-30 2012-01-05 Wabco Gmbh Method and apparatus for detecting a vehicle movement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180928A (en) * 1985-09-28 1987-04-08 Stc Plc Optical displacement sensor for timing geophones in seismic survey equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012000603A1 (en) * 2010-06-30 2012-01-05 Wabco Gmbh Method and apparatus for detecting a vehicle movement

Also Published As

Publication number Publication date
GB1055692A (en) 1967-01-18

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