DE910457C - Trend indicator with capacitor - Google Patents

Trend indicator with capacitor

Info

Publication number
DE910457C
DE910457C DEL11128A DEL0011128A DE910457C DE 910457 C DE910457 C DE 910457C DE L11128 A DEL11128 A DE L11128A DE L0011128 A DEL0011128 A DE L0011128A DE 910457 C DE910457 C DE 910457C
Authority
DE
Germany
Prior art keywords
capacitor
iron
voltage
indicator according
tendency
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
Application number
DEL11128A
Other languages
German (de)
Inventor
Dipl-Ing Hermann Ragnar Eggers
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL11128A priority Critical patent/DE910457C/en
Application granted granted Critical
Publication of DE910457C publication Critical patent/DE910457C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/007—Transmitting or indicating the displacement of flexible diaphragms using variations in inductance
    • 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
    • G01D5/20—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 inductance, e.g. by a movable armature
    • G01D5/22—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 inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/225—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 inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils
    • G01D5/2258—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 inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils by a movable ferromagnetic element, e.g. core

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Description

Zur Ermittlung des Differentialquotienten sind bei elektrischen Reglern eine Reihe von Verfahren bekanntgeworden, insbesondere solche, bei denen die Tendenz mit Hilfe eines Kondensators ermittelt wird. Hierbei ist einerseits ein Verfahren denkbar, bei dem ein stufenförmig geteilter Widerstand an einer Gleichspannung liegt und die Spannung am von der Regelgröße gesteuerten Abgriff mit einem Kondensator auf das Meßwerk gegeben wird. Hierbei treten Schwierigkeiten auf infolge der Stufung des Widerstandes. Andererseits gibt es Ringrohre. bei denen ein stufenloser Widerstand in einem teilweise mit Quecksilber gefüllten Glasrohr eingeschmolzen ist. Dieser Widerstand kann jedoch nur verhältnismäßig niedrigohmig ausgebildet werden, so daß zur Erzielung ausreichender Ströme sehr große Kondensatoren verwendet werden müssen. To determine the differential quotient, electrical controllers a number of procedures have become known, especially those in which the tendency is determined with the help of a capacitor. Here, on the one hand, is a process conceivable in which a stepped split resistor is connected to a direct voltage and the voltage at the tap controlled by the controlled variable with a capacitor is given to the measuring mechanism. Difficulties arise here due to the gradation of resistance. On the other hand, there are ring tubes. where a stepless resistance melted in a glass tube partially filled with mercury. This However, resistance can only be formed with a relatively low resistance, so that very large capacitors must be used to achieve sufficient currents.

Erfindungsgemäß wird ein veränderlicher induktiver Widerstand verwandt, bei dem von der Meßgröße ein bewegliches Eisen verstellt wir. Eine von der Stellung des Eisens abhängige Wechselspannung wird gleichgerichtet und- einem Agondensator zugeführt. Der induktive Widerstand kann für eine hohe Spannung ausgelegt werden; so daß kleine Kon;densatoren ausreichen. Ferner tritt keine Stufigkeit der veränderten Spannung auf, so daß eine feinfühlige Impulsgabe gewährleistet ist. According to the invention, a variable inductive resistance is used, in the case of which a movable iron is displaced by the measured quantity. One of the position AC voltage dependent on iron is rectified and - an agon capacitor fed. The inductive resistance can be designed for a high voltage; so that small capacitors are sufficient. Furthermore, there is no gradation of the changed Voltage on, so that a sensitive impulse is guaranteed.

In der Zeichnung sind in Fig. I und 2 zwei Ausfübrungsbeispiele der Erfindung dargestellt. In Fig. I ist ein Zugmesser Z gezeichnet, dessen Membran 11 ein Eisen E auf und ab bewegt. Der Spulenkörper besteht aus der unmagnetischen Hülse H mit den vier Flanschen F und dem zur Abschirmung dienenden Rückschluß ring S. Die außenliegenden Primärwicklungen liegen am Wechselstromnetz und sind verhältnismäßig niedrigohmig gewickelt. Die innenliegenden Sekundärwicklungen sind mit verhältnismäßig viel Wicklungen gewickelt. Die entstehende Spannung wird über einen Gleichrichter G einem Widerstand R1 zugeführt. An derselben Spannung liegt die Reihenschaltung von Widerstand R" Kondensator C und Instrumeta. Das Instrument A wird bei Änderungen des angezeigten Zuges von einem Strom durchflossen, der ein Maß für die Anderungsgeschwindigkeit des Zuges ist. Es ist auch eine Ausführung möglich, bei der nur zwei Wicklungen verwendet werden und die Spannung an einer Wicklung gleich gerichtet wird. In the drawing, two exemplary embodiments are shown in FIGS Invention shown. In Fig. I a draft knife Z is drawn, its membrane 11 an iron E moves up and down. The coil body consists of the non-magnetic Sleeve H with the four flanges F and the return ring serving for shielding S. The external primary windings are connected to the alternating current network and are proportionate wound with low resistance. The internal secondary windings are proportionate a lot of wraps wound. The resulting voltage is supplied via a rectifier G is fed to a resistor R1. The series connection is at the same voltage of resistor R "capacitor C and instrumeta. The instrument A is used in case of changes of the indicated train flowed through by a current, which is a measure of the rate of change of the train is. It is also possible to have a version with only two windings and the voltage across a winding is rectified.

Fig. 2 zeigt eine ähnliche Anordnung, wobei je-1 doch nicht eine lineare, sondern eine Drehbewegung ausgenutzt wird. Auf der Achse 2, die einen Ausschlagswinkel von maxinial 2700 haben möge, sitzt das Zahnrad Z2, das von der Meßgröße verstellt wird. Dieses ist mit einem Zahnrad, auf der Achse I gekuppelt, wobei die Achse I einen Ausschlag von maximal go0 macht. Auf dieser Achse hinwieder ist das Dreheisen befestigt, welches in entgegengesetztem Sinne gegenüber zweier Spulen beweglich gelagert ist. Die Anordnung der beiden Spulen und ihrer Wicklungen erfolgt ähnlich wie nach Fig. I. Durch andere Schaltung wird jedoch am Anzeigegerät A die jeweilige Stellung des Dreheisens angezeigt, vermehrt um ein der itnderungsgeschwindigkeit proportionales Glied. Der Einfluß der Änderungsgeschwindigkeit kann durch den Abgriff des Potentiometers R3 verändert werden. Fig. 2 shows a similar arrangement, but not one linear, but a rotary movement is used. On the axis 2, the angle of deflection of maxinial 2700, there is gear Z2, which adjusts the measured variable will. This is coupled to a gear on axis I, with axis I makes a deflection of a maximum of go0. The moving iron is on this axis again attached, which is movable in opposite directions with respect to two coils is stored. The arrangement of the two coils and their windings is similar as shown in Fig. I. By other circuitry on the display device A, however, the respective Position of the moving iron displayed, increased by one of the rate of change proportional term. The influence of the rate of change can be influenced by the tap of the potentiometer R3 can be changed.

Die Tendenz oder Änderungsgeschwindigkeit wird vorzugsweise für Regler eingesetzt, um die Stabilität zu erhöhen. Falls ein Röhrenverstärker verwandt wird, kann an einem der Widerstände, z. B. an R2., eine Gleichspannung abgegriffen werden, die auf das Gitter einer Verstärkerröhre wirkt, wodurch die Verstärkung der Röhre zusätzlich geändert wird. The tendency or rate of change is preferred for regulators used to increase stability. If a tube amplifier is used, can be connected to one of the resistors, e.g. B. at R2., A DC voltage can be tapped, which acts on the grid of an amplifier tube, thereby increasing the amplification of the tube is also changed.

Claims (4)

PATENTANSPRÜCHE: 1. Tendenzanzeiger mit Kondensator, dadurch gekennzeichnet, daß die am Kondensator liegende Gleichspannung durch Veränderung einer Induktivität und mit Hilfe eines Gleichrichters erzeugt wird. PATENT CLAIMS: 1. Tendency indicator with capacitor, characterized in that that the DC voltage across the capacitor is changed by changing an inductance and is generated with the help of a rectifier. 2. Tendenzanzeiger nach Anspruch I mit zwei Spulen, dadurch gekennzeichnet, daß jede Spule eine Primär- und Sekundärwicklung erhält, von denen die Sekundärwicklung dem Eisen benachbart angeordnet ist. 2. tendency indicator according to claim I with two coils, characterized in that that each coil receives a primary and secondary winding, of which the secondary winding is arranged adjacent to the iron. 3. Tendenzanzeiger nach Anspruch I und 2, dadurch gekennzeichnet, daß der magnetische Kreis durch Eisenflansche und Eisenrückschlüsse weitgehend nach außen geschirmt ist. 3. tendency indicator according to claim I and 2, characterized in that that the magnetic circuit by iron flanges and iron flaps largely after shielded on the outside. 4. Tendenzanzeiger nach Anspruch I bis 3, dadurch gekennzeichnet, daß der durch den Kondensator fließende Strom an einem Widerstand einen Spannungsabfall erzeugt, der auf ein Gitter einer Verstärkerröhre zusätzlich gegeben wird. 4. tendency indicator according to claim 1 to 3, characterized in that that the current flowing through the capacitor causes a voltage drop across a resistor generated, which is added to a grid of an amplifier tube.
DEL11128A 1951-12-21 1951-12-21 Trend indicator with capacitor Expired DE910457C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL11128A DE910457C (en) 1951-12-21 1951-12-21 Trend indicator with capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL11128A DE910457C (en) 1951-12-21 1951-12-21 Trend indicator with capacitor

Publications (1)

Publication Number Publication Date
DE910457C true DE910457C (en) 1954-05-03

Family

ID=7258727

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL11128A Expired DE910457C (en) 1951-12-21 1951-12-21 Trend indicator with capacitor

Country Status (1)

Country Link
DE (1) DE910457C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006518B (en) * 1956-02-13 1957-04-18 Licentia Gmbh Trend indicator with capacitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006518B (en) * 1956-02-13 1957-04-18 Licentia Gmbh Trend indicator with capacitor

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