DE702504C - Arrangement for measuring mechanical vibrations - Google Patents
Arrangement for measuring mechanical vibrationsInfo
- Publication number
- DE702504C DE702504C DE1936F0081932 DEF0081932D DE702504C DE 702504 C DE702504 C DE 702504C DE 1936F0081932 DE1936F0081932 DE 1936F0081932 DE F0081932 D DEF0081932 D DE F0081932D DE 702504 C DE702504 C DE 702504C
- Authority
- DE
- Germany
- Prior art keywords
- coil
- arrangement
- mechanical vibrations
- coils
- measuring
- 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
Links
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
'Anordnung zur Messung mechanischer Schwingungen . Meßgeräte, die auf der Anzeige der Veränderung der Induktivität von stromdurchflossenen, parallel geschalteten, in axialer Richtung hintereinander angeordneten Spulen durch Verschiebung eines Eisenkernes in deren Kraftfeldern beruhen, sind bekannt. Ihre Nachteile liegen in der Notwendigkeit des Aufbaues einer Brückenschaltung und in nicht genügender Empfindlichkeit.'' Arrangement for measuring mechanical vibrations. Measuring devices that on the display of the change in inductance of current-carrying, parallel switched coils arranged one behind the other in the axial direction by displacement of an iron core in their force fields are known. Their disadvantages lie in the need to build a bridge circuit and in insufficient Sensitivity.
Auch ist es bekannt, eine durch die Abtastnadel für Schallplatten gesteuerte Spule zwischen den Polen eines Wechs@lstromm_agnetsystems so anzuordnen, daß in der Spule Wechselspannungen verschiedener Höhe indiziert werden. Auch dieses Verfahren der Umwandlung mechanischer Schwingungen in elektrische Schwingungen schließt teilweise eine große Trägheit in sich, die es zur Messung von mechanischen Schwingungen höchster Frequenz für wenig geeignet erscheinen läßt.It is also known to use a stylus for gramophone records to arrange the controlled coil between the poles of an alternating current magnet system in such a way that that alternating voltages of different levels are indicated in the coil. This too Process of converting mechanical vibrations into electrical vibrations includes partly a great inertia in itself, which it for the measurement of mechanical vibrations highest frequency seems unsuitable.
Die Erfindung geht von der ebenfalls .bekannten Anordnung zur Messung mechanischer Schwingungen oder Verschiebungen mit Hilfe einer in einem Wechselfeld befindlichen Spule aus, welche durch die zu vermessende Schwingung (Verschiebung) so bewegt wird, daß durch die Messung der in ihr induzierten Spannung die Lage der Spule festgestellt werden kann. Die Erfindung ist dadurch gekennzeichnet, daß das Wechselfeld, in dem sich diese Spule befindet, durch zwei zu ihr ganz oder näherungsweise achsparallele Spulen erzeugt wird, deren Einwirkung auf die bewegliche Spule sich je nach deren Lage mehr oder weniger stark aufhebt. Die Wirksamkeit der Anordnung beruht also auf der Veränderung der Gegeninduktivität der Spulen a. und b gegen die Spule e durch die Verschiebung der Spule c.The invention is based on the also known arrangement for measuring mechanical vibrations or displacements with the aid of a coil located in an alternating field, which is moved by the vibration to be measured (displacement) so that the measurement of the voltage induced in it determines the position of the Coil can be determined. The invention is characterized in that the alternating field in which this coil is located is generated by two coils which are completely or approximately axially parallel to it, the effect of which on the moving coil is more or less canceled depending on its position. The effectiveness of the arrangement is based on the change in the mutual inductance of the coils a. and b against the coil e by moving the coil c.
In den Abbildungen sind die drei Ausführungsformen des Erfindungsgegenstandes schematisch dargestellt.The figures show the three embodiments of the subject matter of the invention shown schematically.
Die Spulen a und b werden von einer Wechselstromquelle beliebig hoher Frequenz erregt, und zwar sind sie so gestaltet, daß ihre gegeninduktive Wirkung auf die bewegliche Spule e je nach deren Lage sich mehr oder minder stark aufhebt. Man kann also die gegenseitige Lage der Spulen dadurch messen, daß man die in Spule c indizierte Spannung einer geeigneten Meßvorrichtung. z. B. Gleichrichter und Oszillograph, zuführt.The coils a and b are excited by an alternating current source of any high frequency, and indeed they are designed so that their mutual inductive effect on the movable coil e is more or less canceled depending on its position. The mutual position of the coils can thus be measured by using a suitable measuring device to measure the voltage indicated in coil c. z. B. rectifier and oscilloscope feeds.
Die Spulen können dabei als Zylinderspulen (Abb. t) oder Flachspulen (Abb. z und 3 ) gebaut sein. Im Gegensatz zu den schon bekannten Vorrichtungen zeichnet sich die neue Anordnung durch besonders einfachen Aufbau aus; durch die Wahl geeigneter Spulenabmessungen und Wicklungsdichten kann ein gewisser Einfluß auf die Beziehung zwischen mechanischer Verschiebung und induzierter Spannung gewonnen «erden. Es ist dadurch möglich, die Anordnung auch zur Messung sehr großer Schwingwege brauchbar zu gestalten.The coils can be used as cylinder coils (Fig. T) or flat coils (Fig. Z and 3). In contrast to the already known devices, it draws the new arrangement is characterized by a particularly simple structure; by choosing more suitable Coil dimensions and winding densities can have some influence on the relationship between mechanical displacement and induced tension. It This makes it possible to use the arrangement for measuring very large oscillation paths to design.
Wählt man beispielsweise die Sendefrequenz sehr hoch, dann sind nur Spulen mit wenigen Windungen erforderlich; die Abmessungen der Anordnung und die bewegten Massen werden dann sehr klein.If you choose, for example, the transmission frequency very high, then only Coils with a few turns required; the dimensions of the arrangement and the moving masses are then very small.
Im übrigen ist es für die Erfindung ohne Belang, welche der Spulen a, b oder c bewegt «-erden. Durch Anbringung einer in die Achse der Länge nach zu verschiebenden Spule c eingeschnittenen Schraubennute (Gewinde) o. dgl. kann eine besonders feine axiale Verschiebung unter Verdrehung der Spule c bzw. deren Achse zum Zwecke der Eichung erfolgen. Dies kenntlich zu machen, sind in der zeichnerischen Darstellung neben den Parallelverschiebungspfeilen auch solche dargestellt, welche eine schraubenförmige Verdrehung als Längsverschiebung kennzeichnen sollen.In addition, it is irrelevant for the invention which of the coils a, b or c moved «-earth. By attaching a lengthwise to the axis shifting coil c incised screw groove (thread) o. The like. Can a particularly fine axial displacement with rotation of the coil c or its axis for the purpose of calibration. This is to be made clear in the graphic Representation in addition to the parallel displacement arrows also those shown, which to identify a helical twist as a longitudinal displacement.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1936F0081932 DE702504C (en) | 1936-10-27 | 1936-10-27 | Arrangement for measuring mechanical vibrations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1936F0081932 DE702504C (en) | 1936-10-27 | 1936-10-27 | Arrangement for measuring mechanical vibrations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE702504C true DE702504C (en) | 1941-02-10 |
Family
ID=7113800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1936F0081932 Expired DE702504C (en) | 1936-10-27 | 1936-10-27 | Arrangement for measuring mechanical vibrations |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE702504C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1155258B (en) * | 1957-06-12 | 1963-10-03 | Westinghouse Electric Corp | Device for measuring the vibrations of rotating shafts u. like |
| DE1173674B (en) * | 1959-12-08 | 1964-07-09 | Bbc Brown Boveri & Cie | Measuring device for the determination of small movements in electromagnetic circuits |
| DE1199999B (en) * | 1959-11-24 | 1965-09-02 | Grundig Max | Measuring transducer for converting gas or liquid pressures and / or flow velocities into electrical measured quantities |
| DE1261681B (en) * | 1958-03-03 | 1968-02-22 | Eric Miles Langham | Electrical device for measuring the position of two moving parts in relation to one another |
| DE1296395B (en) * | 1963-09-20 | 1969-05-29 | Plessey Uk Ltd | Transmitter |
| DE1498258B1 (en) * | 1964-10-01 | 1970-01-29 | Westland Aircraft Ltd | Device for determining and displaying the position of two parts that can move relative to one another |
| DE3218508A1 (en) * | 1982-05-17 | 1983-12-01 | Oskar Ing.(grad.) 7073 Lorch Mohilo | Measuring coil system for an inductive angular resolver |
-
1936
- 1936-10-27 DE DE1936F0081932 patent/DE702504C/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1155258B (en) * | 1957-06-12 | 1963-10-03 | Westinghouse Electric Corp | Device for measuring the vibrations of rotating shafts u. like |
| DE1261681B (en) * | 1958-03-03 | 1968-02-22 | Eric Miles Langham | Electrical device for measuring the position of two moving parts in relation to one another |
| DE1199999B (en) * | 1959-11-24 | 1965-09-02 | Grundig Max | Measuring transducer for converting gas or liquid pressures and / or flow velocities into electrical measured quantities |
| DE1173674B (en) * | 1959-12-08 | 1964-07-09 | Bbc Brown Boveri & Cie | Measuring device for the determination of small movements in electromagnetic circuits |
| DE1296395B (en) * | 1963-09-20 | 1969-05-29 | Plessey Uk Ltd | Transmitter |
| DE1498258B1 (en) * | 1964-10-01 | 1970-01-29 | Westland Aircraft Ltd | Device for determining and displaying the position of two parts that can move relative to one another |
| DE3218508A1 (en) * | 1982-05-17 | 1983-12-01 | Oskar Ing.(grad.) 7073 Lorch Mohilo | Measuring coil system for an inductive angular resolver |
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