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DE459926C - Electric vibrometer - Google Patents

Electric vibrometer

Info

Publication number
DE459926C
DE459926C DEM99414D DEM0099414D DE459926C DE 459926 C DE459926 C DE 459926C DE M99414 D DEM99414 D DE M99414D DE M0099414 D DEM0099414 D DE M0099414D DE 459926 C DE459926 C DE 459926C
Authority
DE
Germany
Prior art keywords
plates
vibrometer
electric
mass
electric vibrometer
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
DEM99414D
Other languages
German (de)
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.)
HERMANN JOSEF MENGES DIPL ING
Original Assignee
HERMANN JOSEF MENGES DIPL ING
Publication date
Priority to DEM99414D priority Critical patent/DE459926C/en
Application granted granted Critical
Publication of DE459926C publication Critical patent/DE459926C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • 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
    • 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
    • G01L9/08—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 by making use of piezoelectric devices, i.e. electric circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining imbalance
    • G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
    • G01M1/22—Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Description

Elektrischer Schwingungsmesser. Bei dem durch das Patent 417 989 Beschützten Apparat kann man unter Umständen die Wirkung noch wesentlich dadurch steigern, daß man als elastische, piezoelektrische Substanz, die auch zugleich die träge Masse bilden kann, eine oder mehrere sogenannte Curiesche Platten verwendet. Unter letzterer versteht man eine Platte, die derart aus einem geeigneten piezoelektrischen Kristall (z. B. Bergkristall) herausgeschnitten wird, daß auf ihr bei Zug oder Druck in der Achse A-A (s. Abb. 1) auf den Seiten a, b entgegengesetzte .elektrische Ladungen auftreten. Da die letzteren proportional der Länge L und umgekehrt proportional der Dicked sind, ist man in der Lage, schon bei geringen Zug-oder Druckkräfteai verhältnismäßig große Ladungen zu erzeugen.Electric vibrometer. In the case of the apparatus protected by patent 417,989, the effect can be increased considerably by using one or more so-called Curies plates as the elastic, piezoelectric substance, which can also form the inertial mass at the same time. The latter is understood to be a plate that is cut out of a suitable piezoelectric crystal (e.g. rock crystal) in such a way that, when it is pulled or pushed in the axis AA (see Fig. 1), opposite sides on the sides a, b. electrical charges occur. Since the latter are proportional to the length L and inversely proportional to the thickness, it is possible to generate relatively large charges even with low tensile or compressive forces.

Ein Bespiel zur Ausführung eines S.chwingungsmessers nach Patent 417 989 unter Verwendung Curiescher Platten sei aus der Fülle der möglichen Formen herausgegriffen und in Abb. z dargestellt. m ist die träge Masse; C, C sind die beiden Platten, die auf ihren heiden elektrisch aktiven Seiten in geeigneter Weise elektrisch leitend gemacht sind. Wird die Grundplatte B in vertikale oder beliebig gerichtete Schwingungen versetzt, so entstehen auf den Belegungen der beiden Platten C infolge der Massenbeschleunigung elektrische Ladungen, die einen Rückschluß auf die erregende Schwingung zulassen. Bemerkt sei noch, daß man natürlich eine beliebige Zahl Curiescher Platten anwenden und in zweckmäßiger Weise elektrisch zusammenschalten kann.An example of the implementation of a vibration meter according to patent 417 989 using Curiescher plates is selected from the abundance of possible shapes and shown in Fig. Z. m is the inertial mass; C, C are the two plates which are made electrically conductive in a suitable manner on their two electrically active sides. If the base plate B is set in vertical or arbitrarily directed vibrations, electrical charges arise on the coverings of the two plates C as a result of the mass acceleration, which allow conclusions to be drawn about the exciting vibration. It should also be noted that any number of Curiesian plates can of course be used and connected together electrically in an expedient manner.

In Abb.3 ist eine Ausführungsform gezeichnet, bei der die besondere träge Masse fehlt und durch die Eigenmasse des Kristalls ersetzt ist.In Fig.3 an embodiment is drawn in which the special inert mass is missing and is replaced by the crystal's own mass.

Claims (1)

PATEN TANSPRIJCII Elektrischer Schwingungsmesser mit einem schwingfähigen System nach Patent ¢17 989, dadurch gekennzeichnet, daß als piezoelektrische Substanz .eine oder mehrere Curiesche Platten (z: B. aus Bergkristall) verwendet werden.PATEN TANSPRIJCII Electrical vibration meter with a vibratory System according to Patent [17,989], characterized in that the piezoelectric substance .one or more Curies plates (e.g. made of rock crystal) can be used.
DEM99414D Electric vibrometer Expired DE459926C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM99414D DE459926C (en) Electric vibrometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM99414D DE459926C (en) Electric vibrometer

Publications (1)

Publication Number Publication Date
DE459926C true DE459926C (en) 1928-05-15

Family

ID=7324053

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM99414D Expired DE459926C (en) Electric vibrometer

Country Status (1)

Country Link
DE (1) DE459926C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747008C (en) * 1939-03-11 1944-09-04 Peter Petersen Piezoelectric, acceleration-sensitive encoder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747008C (en) * 1939-03-11 1944-09-04 Peter Petersen Piezoelectric, acceleration-sensitive encoder

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