DE1090872B - Light contact instrument with an upper and a lower limit value assigned photoelectric cells - Google Patents

Light contact instrument with an upper and a lower limit value assigned photoelectric cells

Info

Publication number
DE1090872B
DE1090872B DEG24566A DEG0024566A DE1090872B DE 1090872 B DE1090872 B DE 1090872B DE G24566 A DEG24566 A DE G24566A DE G0024566 A DEG0024566 A DE G0024566A DE 1090872 B DE1090872 B DE 1090872B
Authority
DE
Germany
Prior art keywords
photoelectric cells
lower limit
light contact
limit value
value assigned
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.)
Pending
Application number
DEG24566A
Other languages
German (de)
Inventor
Helmut Peter
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.)
P Gossen and Co GmbH
Original Assignee
P Gossen and Co GmbH
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 P Gossen and Co GmbH filed Critical P Gossen and Co GmbH
Priority to DEG24566A priority Critical patent/DE1090872B/en
Publication of DE1090872B publication Critical patent/DE1090872B/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G05B24/00—Open-loop automatic control systems not otherwise provided for
    • G05B24/02—Open-loop automatic control systems not otherwise provided for electric
    • 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
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/16—Elements for restraining, or preventing the movement of, parts, e.g. for zeroising
    • 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
    • G01D5/12—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 using electric or magnetic means
    • G01D5/14—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 using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/18—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 using electric or magnetic means influencing the magnitude of a current or voltage by varying effective impedance of discharge tubes or semiconductor devices
    • 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/24—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil having light-sensitive input

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Details Of Measuring Devices (AREA)

Description

Lichtkontaktinstrument mit einem oberen und einem unteren Grenzwert zugeordneten lichtelektrischen Zellen Die Erfindung betrifft ein Lichtkontaktinsftument mit körperlichem Zeiger und lichtelektrischen Zellen, die einem oberen und unteren Grenzwert zugeordnet sind und durch eine an dem Zeiger angebrachte Abdeckfahne gesteuert werden. Light contact instrument with an upper and a lower limit value associated photoelectric cells The invention relates to a light contact instrument with physical pointer and photoelectric cells, which are an upper and a lower Limit values are assigned and controlled by a cover tab attached to the pointer will.

Bei Instrumenten dieser Art kann es bei einer erheblichen Über- oder Unterschreitung des Toleranzbereiches vorkommen, daß die Abdeckfahne an der lichtelektrischen Zelle vorbeischwingt und diese wieder freigibt, ohne daß inzwischen der Meßwert seinen Normalwert erreicht hat. Hierdurch wird den Folgegliedern ein Normalzustand vorgetäuscht und dadurch eine Fehlschaltung veranlaßt. With instruments of this type, there may be a significant over- or If the tolerance range falls below the limit, the cover flag on the photoelectric Cell swings past and releases it again without the measured value in the meantime has reached its normal value. This makes the following members a normal state simulated and thereby caused a faulty switching.

Es besteht daher die Aufgabe, dafür zu sorgen, daß die lichtelektrischen Zellen nach einem derartigen Vorbeigang der Abdeckfahne weiterhin abgedunkelt bleiben Um dies zu erreichen, hat man bei bekannten Anordnungen die Abdeckfahne verhältnismäßig lang gestaltet, so daß sich auch bei erheblichem Überschwingen noch ein Teil dieser Fahne vor der betreffenden lichtelektrischen Zelle befindet. Eine Abdeckfahne in dieser Form besitzt naturgemäß ein im Vergleich zu den Daten empfindlicher Meßwerke nicht zu vernachlässigendes Gewicht und erzeugt dementsprechend, insbesondere im Zusammenwirken mit dem erforderlichen Balancegewicht, ein erhebliches zusätzliches Trägheitsmoment. Aus diesem Grunde sind derartige Abdeckfahnen bisher relativ nahe bei der Drehachse der Meßwerke angeordnet worden. Hierdurch wird aber die Ansprechgenauigkeit eines Lichtkontaktinstrumentes stark herabgesetzt, da diese offensichtlich um so größer ist, je größer der radiale Abstand der Abdeckblende mit den dazugehörigen Fotowiderständen von der Drehachse gewählt wird. Außerdem können gewisse Mindestempfindlichkeiten bei der Wahl des Meßwerkes nicht unterschritten werden. There is therefore the task of ensuring that the photoelectric Cells continue to remain darkened after the cover flag has passed in this way In order to achieve this, in known arrangements, the cover flap is proportionate Long designed so that even with considerable overshoot a part of this Flag is located in front of the photoelectric cell in question. A cover flap in This form naturally has a measuring mechanism that is more sensitive than the data not negligible weight and generated accordingly, especially in the Interaction with the required balance weight, a considerable additional one Moment of inertia. For this reason, such cover flaps are relatively close so far has been arranged at the axis of rotation of the measuring mechanisms. However, this increases the accuracy of the response of a light contact instrument is greatly reduced, since this is obviously so is larger, the greater the radial distance between the cover panel and the associated Photoresistors from the axis of rotation is chosen. In addition, certain minimum sensitivities not be undercut when choosing the measuring mechanism.

Es ist auch bekannt, die lichtelektrischen Zellen durch fest angeordnete Blenden gegen einen direkten Lichteinfall abzuschirmen. Dies ist aber nur bei Lichtkontaktinstrumenten durchführbar, bei denen das Licht der Lichtquelle nicht auf kürzestem Wege auf die lichtelektrischen Zellen gelangt und hierbei durch die Abdeckfahne beeinflußt wird, sondern bei denen aus ganz bestimmten andersartigen Gründen eine Umwegoptik zwischengeschaltet ist. Außerdem kann diese Methode nur bei relativ kleinen Ausschlagwinkeln angewendet werden. It is also known to use the photoelectric cells by fixedly arranged To shield the blinds from direct incidence of light. But this is only for light contact instruments feasible where the light from the light source does not reach the photoelectric cells and is influenced by the cover flap, but with those for very specific different reasons a detour optics are interposed is. In addition, this method can only be used with relatively small deflection angles will.

Das Lichtkontaktinstrument gemäß vorliegender Erfindung weist demgegenüber die genannten Beschränkungen nicht auf. Es ist gekennzeichnet durch konzentrisch zur Drehachse am beweglichen System angeordnete ringförmige Blenden, welche nach dem selektiven Abdecken durch die vorbeischwingende Abdeckfahne die in zwei verschiedenen, zur Zeigerebene parallelen Ebenen angeordneten lichtelektrischen Zellen abschatten. In contrast, the light contact instrument according to the present invention has the mentioned restrictions do not apply. It is characterized by being concentric to the axis of rotation on the movable system arranged annular diaphragms, which according to the selective covering by the swinging cover flap which is available in two different, Shade the photoelectric cells arranged parallel to the pointer plane.

Die Erfindung ist an einem in der Zeichnung dargestellten Ausführungsbeispiel erläutert. The invention is based on an embodiment shown in the drawing explained.

An der Drehspule 1 eines nicht näher dargestellten Meßwerkes ist der Zeiger 2 angeordnet, dessen Spitze 3 über der Skala 4 spielt. Der Meßwerkszeiger ist nahe an seinem Ende abgekröpft; an dieser Stelle befindet sich die in ihren Abmessungen und ihrer Form auf das Notwendigste beschränkte Abdeckfahne 5. Diese Abdeckfahne bewegt sich beim Ausschlagen des Zeigers 2 vor den in bekannter Weise peripher verschiebbaren Fotozellen 6 und 7, die in zwei verschiedenen Ebenen so angebracht sind, daß die Fotozelle 6 von dem unteren und die Zelle 7 von dem oberen Teil der Abdeckfahne 5 gesteuert wird. On the moving coil 1 of a measuring mechanism, not shown in detail the pointer 2 is arranged, the tip 3 of which plays over the scale 4. The measuring mechanism pointer is bent near its end; at this point is the one in theirs Dimensions and shape restricted to the bare essentials 5. This Cover tab moves when the pointer 2 is knocked out in front of the in a known manner peripherally movable photocells 6 and 7, which are in two different planes so are attached that the photocell 6 from the lower and the cell 7 from the upper Part of the cover 5 is controlled.

In der Verlängerung der Meßwerkachse ist die Glühlampe 8 angeordnet, die von zwei auf dem beweglichen System angeordneten Blenden 9 und 10 konzentrisch umgeben wird. Diese werden von zwei ringförmig gebogenen und zwecks Zuordnung zu den Fotozellen ebenfalls in zwei Ebenen angeordneten Metallstreifen gebildet, deren Lage so gewählt ist, daß sich die in der Abbildung schraffiert dargestellten Schattenbilder 11 und 12 ergeben. The incandescent lamp 8 is arranged in the extension of the measuring mechanism axis, those of two apertures 9 and 10 arranged on the movable system are concentric is surrounded. These are made of two ring-shaped and curved for the purpose of assignment to The photocells also formed metal strips arranged in two levels, whose Position is chosen so that the shadows shown hatched in the figure 11 and 12 result.

Bewegt sich jetzt die Abdeckfahne 5 an einer Fotozelle vorbei aus dem durch die Lage der Zellen gegebenen Toleranzbereich hinaus, so bleibt die betreffende Fotozelle durch eine der beiden Schattenzonen weiterhin abgedunkelt. Daher hält beispielsweise die Kontaktgabe so lange an, bis der Meßwerkszeiger durch Ausregelung der Störgröße wieder in den Toleranzbereich gelangt. Ein quasistabiler Zustand bei Unterschreiten oder Überschreiten des Toleranzbereiches ist daher bei diesem neuen Lichtkontaktinstrument ausgeschlossen. If the cover flap 5 now moves past a photocell beyond the tolerance range given by the position of the cells, the relevant one remains Photocell still darkened by one of the two shadow zones. Hence it holds for example, making contact until the meter pointer is corrected the disturbance variable returns to the tolerance range. A quasi-stable state at Is falling below or exceeding the tolerance range therefore excluded with this new light contact instrument.

An Hand der dargestellten Arbeitsweise ist offensichtlich, daß die Abdeckblende 5 äußerst klein dimensioniert und demzufolge sehr nahe bei der Zeigerspitze angeordnet werden kann. Hierdurch wird, wie schon eingangs angedeutet, die Verwendung eines sehr empfindlichen Meßwerkes ermöglicht und weiterhin eine sehr hohe Ansprechgenauigkeit erreicht. On the basis of the mode of operation shown, it is obvious that the Cover 5 is extremely small and therefore very close to the pointer tip can be arranged. This, as already indicated at the beginning, the use a very sensitive measuring mechanism enables and continues to have a very high response accuracy achieved.

Claims (1)

PATENTANSPRUCH: Lichtkontaktinstrument mit einem oberen und einem unteren Grenzwert zugeordneten, durch eine an einem körperlichen Zeiger angeordnete Abdeckblende gesteuerten lichtelektrischen Zellen, gekennzeidinet durch konzentrisch zur Drehachse am beweglichen System angeordnete ringförmige Blenden, welche nach dem selektiven Abdecken durch die vorbeischwingende Abdeckfahne die in zwei verschiedenen, zur Zeigerebene parallelen Ebenen angeordneten lichtelektrischen Zellen abschalten. PATENT CLAIM: Light contact instrument with an upper and a lower limit value assigned by a arranged on a physical pointer Cover panel controlled photoelectric cells, marked by concentric to the axis of rotation on the movable system arranged annular diaphragms, which according to the selective covering by the swinging cover flap which is available in two different, Switch off photoelectric cells arranged in planes parallel to the pointer plane. -In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 525 211; französische Patentschrift Nr. 1 088 932. -Considered publications: German patent specification No. 525 211; French patent specification No. 1 088 932.
DEG24566A 1958-05-21 1958-05-21 Light contact instrument with an upper and a lower limit value assigned photoelectric cells Pending DE1090872B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG24566A DE1090872B (en) 1958-05-21 1958-05-21 Light contact instrument with an upper and a lower limit value assigned photoelectric cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG24566A DE1090872B (en) 1958-05-21 1958-05-21 Light contact instrument with an upper and a lower limit value assigned photoelectric cells

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DE1090872B true DE1090872B (en) 1960-10-13

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157796B (en) * 1959-02-05 1963-11-21 Gossen & Co Gmbh P Photoelectric follow-up control controlled by a measuring mechanism
DE1161046B (en) * 1959-12-17 1964-01-09 Siemens Ag Photoelectric tap for indicating and regulating measuring devices
DE1239247B (en) * 1962-11-30 1967-04-20 Telefonbau Contactor for electrical slave clocks
DE1262623B (en) * 1962-02-09 1968-03-07 Vdo Schindling Display device for measuring devices with light pointer
DE1541857B1 (en) * 1966-12-23 1972-03-23 Siemens Ag METHOD AND DEVICE FOR INDEPENDENT SERIAL MEASUREMENT OF PARAMETERS OF TWO AND FOUR POLES
DE2209615A1 (en) * 1971-03-02 1972-09-14 Citroen Sa Device which emits an electrical signal when at least two independent parameters assume values confirming a certain relationship
DE2721491A1 (en) * 1976-05-10 1977-11-24 Dresser Ind OPTICAL POSITION SENSOR

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE525211C (en) * 1929-08-11 1931-05-21 Aeg Device for the automatic control of prime movers, in particular for driving alternating current generators
FR1088932A (en) * 1953-08-25 1955-03-11 Device for the simultaneous measurement and control of several quantities and in particular for the simultaneous control of several dimensions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE525211C (en) * 1929-08-11 1931-05-21 Aeg Device for the automatic control of prime movers, in particular for driving alternating current generators
FR1088932A (en) * 1953-08-25 1955-03-11 Device for the simultaneous measurement and control of several quantities and in particular for the simultaneous control of several dimensions

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157796B (en) * 1959-02-05 1963-11-21 Gossen & Co Gmbh P Photoelectric follow-up control controlled by a measuring mechanism
DE1161046B (en) * 1959-12-17 1964-01-09 Siemens Ag Photoelectric tap for indicating and regulating measuring devices
DE1262623B (en) * 1962-02-09 1968-03-07 Vdo Schindling Display device for measuring devices with light pointer
DE1239247B (en) * 1962-11-30 1967-04-20 Telefonbau Contactor for electrical slave clocks
DE1541857B1 (en) * 1966-12-23 1972-03-23 Siemens Ag METHOD AND DEVICE FOR INDEPENDENT SERIAL MEASUREMENT OF PARAMETERS OF TWO AND FOUR POLES
DE2209615A1 (en) * 1971-03-02 1972-09-14 Citroen Sa Device which emits an electrical signal when at least two independent parameters assume values confirming a certain relationship
DE2721491A1 (en) * 1976-05-10 1977-11-24 Dresser Ind OPTICAL POSITION SENSOR

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