DE2604179A1 - Induction measured value converter - is for electrical indication or recording of mechanical movements and has special transmission of movements - Google Patents

Induction measured value converter - is for electrical indication or recording of mechanical movements and has special transmission of movements

Info

Publication number
DE2604179A1
DE2604179A1 DE2604179A DE2604179A DE2604179A1 DE 2604179 A1 DE2604179 A1 DE 2604179A1 DE 2604179 A DE2604179 A DE 2604179A DE 2604179 A DE2604179 A DE 2604179A DE 2604179 A1 DE2604179 A1 DE 2604179A1
Authority
DE
Germany
Prior art keywords
spring
movements
induction coil
recording
measured value
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
DE2604179A
Other languages
German (de)
Inventor
Erkki O T Huhmar
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of DE2604179A1 publication Critical patent/DE2604179A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G01D5/204—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 by influencing the mutual induction between two or more coils
    • G01D5/2066—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 by influencing the mutual induction between two or more coils by movement of a single coil with respect to a single other coil

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The mechanical movement is transmitted onto a spring within an induction coil (2). The change in the inductive impedance in proportional to the change in the length of the spring. The movement is transmitted onto a non-permanent magnetic steel spring which is surrounded by the induction coil (2). The mechanical movement will extend the spring also, a non-magnetic rod (3) in the spring and induction coil (2) is provided as a supporting element for the spring. If the spring is extended, the quantity of material in the induction coil (2) is reduced and the interval between individual spirals of the spring is increased.

Description

PATENTANWALTPATENT ADVOCATE

D-4150 Krefeld 1 · Moerser Straße 140 · Telefon (02151) 28222 α 20469D-4150 Krefeld 1 Moerser Strasse 140 Telephone (02151) 28222 α 20469

Datum 3. Febr. 1976Date Feb. 3, 1976

Bel Antwort bitte angebenPlease give your answer Mein Zeichen 2 st 76 068My sign 2 st 76 068 Ihr ZeichenYour sign

Erkki O.T. Huhmar, Rantalaivurintie 15, 00850 Helsinki 85, FinnlandErkki O.T. Huhmar, Rantalaivurintie 15, 00850 Helsinki 85, Finland

Induktions-Meßwertumwandler für die elektrische Anzeige von mechanischen BewegungenInduction transducer for the electrical display of mechanical movements

Die Erfindung bezieht sich auf einen Meßwertumwandler für die elektrische Anzeige bzw. Aufzeichnung mechanischer Bewegungen.The invention relates to a transducer for the electrical display or recording of mechanical movements.

Die Anforderungen an solche Meßwertumwandler sind verschieden. So muß jede Länge einer Bewegung registriert werden können. Der Meßwertumwandler muß also die entsprechende Empfindlichkeit aufweisen, wobei das Gewicht der bewegten Massen möglichst niedrig sein soll. Die aufgezeichneten bzw. angezeigten Ergebnisse sollen darüberhinaus so linear wie möglich wiedergegeben werden und auch einen Ruhezustand der Bewegung anzeigen. The requirements for such transducers are different. It must be possible to register every length of a movement. The transducer must therefore have the appropriate sensitivity, with the weight of the moving masses as possible should be low. The recorded or displayed results should also be reproduced as linearly as possible and also indicate an idle state of movement.

Von den bekannten Meßwertumformern sind die sogenannten Dehnungs-Of the known transducers, the so-called strain

609834/0697609834/0697

Deutsche Bank AG Krefefc, ,03*525 BLZ 32070080 . Stadt-Sp-rKaeee KrefeK. 305.722 BLZ 32050000 - Poe«»«* Essen 4055-43, BUZ 360,0043 Deutsche Bank AG Krefefc,, 03 * 525 BLZ 32070080. Stadt-Sp-rKaeee KrefeK. 305.722 BLZ 32050000 - Poe «» «* Essen 4055-43, BUZ 360.0043

•i.• i.

meßstreifen nicht geeignet, längere Bewegungsausschläge zu registrieren. Auch fotoelektrische Meßwertumformer sind in aller Regel nicht anwendbar.measuring strips are not suitable for registering longer movements. Photoelectric transducers are also in generally not applicable.

Der Erfindung liegt die Aufgabe zugrunde, einen Meßwertumwandler zu schaffen, der für beliebige Bewegungsabläufe geeignet ist.The invention is based on the object of creating a transducer that can be used for any motion sequences suitable is.

Diese Aufgabe wird dadurch gelöst, daß die mechanische Bewegung auf eine Feder innerhalb einer Induktionsspule übertragen wird, wobei die Änderung in der induktiven Impedanz (Widerstand) proportional der Längenänderung der Feder ist.This object is achieved in that the mechanical movement is transmitted to a spring within an induction coil, where the change in inductive impedance (resistance) is proportional to the change in length of the spring.

Nach der Erfindung wird also die Bewegung in einer speziellen Art und Weise auf die Induktionsspule übertragen. Normalerweise erfolgt eine solche Bewegungsübertragung unmittelbar auf den Eisenkern. Nach der Erfindung jedoch wird die Bewegung auf eine nicht permanente magnetische Stahlfeder 1 übertragen, die von der Induktionsspule 2 umgeben ist. Durch die mechanische Bewegung wird die Feder 1 gedehnt. Desweiteren ist als Stützelement für die Feder 1 ein nicht magnetischer Stab 3 innerhalb der Feder 1 und der Induktionsspule 2 vorgesehen. Aufgrund dieser Anordnung wird erreicht, daß bei einer Ausdehnung der Feder 1 die Materialmenge innerhalb der Induktionsspule 2 abnimmt und der Abstand zwischen den einzelnen Spiralen der Feder 1 zunimmt.According to the invention, the movement is transmitted to the induction coil in a special way. Normally, such a transfer of motion takes place directly on the iron core. According to the invention, however, the movement is transmitted to a non-permanent magnetic steel spring 1 which is surrounded by the induction coil 2. The spring 1 is stretched by the mechanical movement. Furthermore, a non-magnetic rod 3 is provided within the spring 1 and the induction coil 2 as a support element for the spring 1. Due to this arrangement, it is achieved that when the spring 1 expands, the amount of material within the induction coil 2 decreases and the distance between the individual spirals of the spring 1 increases.

Diese Wechsel verursachen, proportionale Änderungen in derThese changes cause proportional changes in the

609834/0697609834/0697

-ί- ?604179-ί-? 604179

induktiven Impedanz. Das gesamte System ist linear, wenn die Ausdehnung der Feder relativ kurz ist. Bei längeren Dehnungen nimmt das Ausgangssignal ab, es kann aber kompensiert werden. inductive impedance. The whole system is linear when the extension of the spring is relatively short. With longer stretches the output signal decreases, but it can be compensated.

Ein besonderer Fortschritt durch die Erfindung wird bei der Aufzeichnung bzw. Anzeige längerer Bewegungsausschläge erreicht. Der Empfänger der Induktionsspule 2 braucht nämlich nicht so lang ausgebildet werden, wie der Bewegungslänge entspricht. Vielmehr wird ja die Bewegung auf die Feder übertragen, wobei deren Ausdehnung wiederum proportional der eigentlichen Bewegungslänge ist. A particular advance by the invention is achieved in the recording or display of longer movements. The receiver of the induction coil 2 does not need to be made as long as corresponds to the length of movement. Rather, the movement is transmitted to the spring, the extent of which is in turn proportional to the actual length of movement .

Die induktive Impedanz ist mit einer Wheatstone'chen Brücke verbunden oder kann mit einem Phasenumformer auf eine Nullmarke eingestellt werden, wobei über einen Gleichrichter und einem Niveau-Wandler ein Analogsignal der Bewegungsänderung erhalten wird. The inductive impedance is connected to a Wheatstone bridge or can be set to a zero mark with a phase converter, an analog signal of the change in movement being obtained via a rectifier and a level converter.

609834/0697609834/0697

Claims (1)

• »f.• »f. PatentanspruchClaim Meßwertumwandler für die elektrische Anzeige von mechanischen Bewegungen, dadurch gekennzeichnet, daß die mechanische Bewegung auf eine Feder (1) innerhalb einer Induktionsspule (2) übertragen wird, wobei die Änderung in der induktiven Impedanz proportional der Längenänderung der Feder (1) ist.Measurement transducer for the electrical display of mechanical movements, characterized in that the mechanical movement is transmitted to a spring (1) within an induction coil (2) , the change in inductive impedance being proportional to the change in length of the spring (1). 609834/0697609834/0697
DE2604179A 1975-02-06 1976-02-04 Induction measured value converter - is for electrical indication or recording of mechanical movements and has special transmission of movements Pending DE2604179A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI750332A FI53512C (en) 1975-02-06 1975-02-06 INDUCTIVE MACHINERY FOR REGISTRATION AV EN ENKELRIKTAD VIDSTRAECKT MEKANISKT ROERELSE

Publications (1)

Publication Number Publication Date
DE2604179A1 true DE2604179A1 (en) 1976-08-19

Family

ID=8508954

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2604179A Pending DE2604179A1 (en) 1975-02-06 1976-02-04 Induction measured value converter - is for electrical indication or recording of mechanical movements and has special transmission of movements

Country Status (3)

Country Link
DE (1) DE2604179A1 (en)
FI (1) FI53512C (en)
SE (1) SE7601240L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602047A1 (en) * 1986-07-25 1988-01-29 Bosch Gmbh Robert Electrical displacement sensor, esp. vehicle control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602047A1 (en) * 1986-07-25 1988-01-29 Bosch Gmbh Robert Electrical displacement sensor, esp. vehicle control

Also Published As

Publication number Publication date
SE7601240L (en) 1976-08-09
FI750332A (en) 1976-08-07
FI53512C (en) 1978-05-10
FI53512B (en) 1978-01-31

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