Vega Grieshaber Kg

Other

Hahn-schickard-gesellschaft Fuer Angewandte Forschung E.v.

Hans-schickard-gesellschaft Fur Angewandte Forschung E.v.

Zengerle, Roland

Holger Gruhler

Joern Jacob

Roland Zengerle

Nicolaus Hey

Martin Mellert

Gerd Ohmayer

Michael Freygang

Josef Fehrenbach

Volker Allgaier

Frank Becherer

Dominik Fehrenbach

Jörn Jacob

Martin Mueller

Hermann Sandmaier

Martin M&uuml;ller

Martin Muller

Jacob Jörn

The invention relates to a vibration sensor with a housing and a mechanical oscillator, with a first tine and a second tine arranged thereon, and a drive for exciting the mechanical oscillator, wherein the drive is fixed relative to the mechanical oscillator by means of a yoke, wherein the yoke defines at least one yoke cavity, wherein a shoulder of at least one tine defines a tine cavity, wherein the yoke cavity and the tine cavity are aligned with one another, and wherein a balancing element is moveably arranged in the yoke cavity, so that it can be arranged at least partially in the tine cavity. The invention further relates to a method for comparing the vibration properties of two tines of a vibration sensor.

Vibration sensor with an aligning element and method for aligning the oscillation properties of two prongs

The a vibration sensor comprising a membrane that can be stimulated so as to oscillate by means of a piezoelectric drive, and a mechanical oscillator arranged on the membrane, at least one piezoelectric element of the drive comprising at least one first electrical contact structure on an upper side of the piezoelectric element and at least one second electrical contact structure on a lower side of the piezoelectric element, such that the at least one piezoelectric element is designed so that an active area of the piezoelectric element corresponds to an area of a mechanical deformation of the unidirectional curvature of the membrane, during a pre-defined eigenmode of the mechanical oscillator.

Vibration sensor and method for optimizing a piezoelectric drive

Vibration sensor comprising a membrane, which can be excited to vibrate by means of a drive, wherein the drive has at least one piezo actuator, which is designed so as to be bonded with the membrane, wherein the membrane has at least one centering device that is designed to be suitable for orienting and keeping the drive centered relative to the membrane.

Vibration sensor with bonded drive

The invention is a fill-level measuring device having the following features: a housing, a membrane, a first drive unit have a first bolt, the bolt being coupled to the membrane, a second drive unit having a second bolt, the second bolt being operatively connected to the membrane and being connected to the housing at an end of the second bolt facing the membrane by means of an intermediate bottom, and the first drive unit and the second drive unit are mechanically connected to each other in series.

Fill-level measuring device

A vibration limit switch with a membrane, which can be set into oscillation, and a drive unit for setting the membrane into oscillation and/or for detecting an oscillation of the membrane, with the drive unit comprising at least one electromagnetic drive and one Piezo-electric drive.

Vibration limit switch

A method of manufacturing a conductive adhesive bond assembly consisting of a piezoactuator and a printed circuit board that are connected by at least one adhesive connection, with at least one electrical connection created by an electrically conductive adhesive between a first connection contact on the printed circuit board and between a second connection contact on the piezoactuator, whereby the connection contacts face in the same direction and the adhesive connection takes place through an opening in one of the components.

Method of manufacturing a conductive adhesive bond assembly

A layout arrangement and system consisting of a piezoactuator and a flexible circuit board, with at least one electrical and mechanical connection, produced by an electrically conducting adhesive, between a first connection contact on the circuit board and a second connection contact on the piezoactuator, wherein the connection is led through an opening in the flexible circuit board and wherein the surfaces of the connection contacts that are glued together have an essentially parallel and equally oriented normal vector, and a method for assembling and arranging the same.

Layout system consisting of a piezoactuator and a flexible circuit board and method for assembling the same

A vibration limit switch system and related method is provided with a piezoelectric transmitting- and/or receiving unit, in operable connection with a membrane that can be put in oscillation, and a mechanical oscillation arrangement that is coupled to the membrane, whereby the piezoelectric transmitting- and/or receiving unit is adhered directly, or via an adaptation layer by an adhesive layer, to the membrane. In this improvement, the adhesive layer between the membrane and the transmitting-and/or receiving unit or the adaptation layer has a thickness in an edge area R which thickness is elevated in comparison to a central area Z. This thickness is arranged in differing geometries and amounts to further improve performance.

Vibration limit switch system

The present invention is a measuring cell with a base body, a measurement membrane which is arranged on the base body, and a measurement device, where a clearance between the measurement membrane and the base body is filled with a fluid which presents an increased heat conductivity (&#x3ba;) compared to air.

Measuring cell and a method of use therefor

The invention is a vibration sensor with a carrying element capable of being set into vibration; a conversion device having a field coil to set and/or tap the carrying element into vibration; an anchor mounted in the field coil; and, a vibration element to transmit the vibrations from the carrying element into/from a surrounding space. The anchor is designed as two parts, having a permanent magnet and a coil core connected to the field coil, with an air gap arranged therebetween and lying in the area of the axial extension of the field coil. The permanent magnet is connected to the carrying element to transmit vibrations; and, the field coil and the permanent magnet are arranged to interact in such a way that any vibration of the permanent magnet induces current flow in the field coil and/or induces vibration of the permanent magnet in the field coil.

Vibration sensor

The present invention is a measuring cell comprising a base body. Layered upon the base body is a measurement membrane having a first measuring element, a measurement device, and an intermediate membrane. The intermediate membrane is arranged between the measurement membrane and the base body, and a second measuring element is arranged thereon. When a pressure force is applied to the cell, the measurement membrane is directed outward and undergoes deformation with respect to the intermediate membrane as well as the base body. The deformation causes the measuring capacitance formed by the measuring electrodes to change according to the pressure applied.

A fill-measuring device for determining and/or monitoring the fill level of a container, includes: a membrane () which can be caused to vibrate; a rigid membrane rim () in which the membrane () is disposed; a drive device () having a drive end face () to impel the membrane () into vibration, and/or to convert vibrations of the membrane () into an electrical signal; and an attaching device () for attaching the drive device () to the membrane rim (); wherewith, according to the invention: a part of the attaching device () is disposed in a region extending between the membrane () and the drive end face () of the drive device (); and at least one pressure transmission element () is disposed between the membrane () and the drive end face () of the drive device (), in a manner such that the membrane () and the drive end face () are coupled together for purposes of transmission of vibration.

Measuring device for determining and/or monitoring the amount of contents in a container

The invention is a method and system for detection and compensation of a rapid change in temperature on a pressure measurement cell, in which a measurement signal proportional to the deflection of a diaphragm is generated by means of a sensor. A reference signal proportional to the deflection of the diaphragm is generated by a second sensor; and, measured values are generated by a microprocessor from the measurement signal while the respective reference values are generated from the reference signal. The reference values are compared with the expected values from a tolerance band, and either a pressure-induced deflection of the diaphragm is detected when there is a correspondence, and the measured values are output as measured values for the measured pressure; or, if there is not a correspondence, a deflection of the diaphragm due to a rapid change in temperature is detected, the measured values are corrected and output.

Method and system for detection and compensation of a rapid temperature change on a pressure measurement cell

A device for device for applying a plurality of microdroplets onto a substrate has a plurality of nozzle orifices in a dosing head. In addition to walls for defining a liquid column of a medium to be dosed on each nozzle orifice, a pressure chamber is provided, which is adapted to be filled with a buffer medium and which is arranged in such a way that said buffer medium can simultaneously be used for applying a pressure to the liquid-column ends which are spaced apart from the nozzle orifices. A pressure generator is provided for applying a pressure to said buffer medium in such a way that a plurality of microdroplets will simultaneously be applied onto the substrate through said plurality of nozzle orifices. Finally, liquid reservoirs for the media to be dosed, which are in fluid communication with the liquid columns on the nozzle orifices are provided.

Method and device for applying a plurality of microdroplets onto a substrate

The invention relates to a level meter () with an outer oscillating body () and an inner oscillating body (), which bodies are coaxially positioned relative to a longitudinal axis (X), with a drive and reception device () for exciting an oscillation in the oscillating bodies or for detecting an oscillation in the oscillating bodies, with a diaphragm () for elastically coupling one of the oscillating bodies (), and with a clamping device () for clamping the drive and/or reception device () against the oscillating bodies. The level meter is advantageously characterized by the diaphragm (), which runs in a lateral direction relative to the longitudinal axis (X) of the outer oscillating body () and on the outside passes into a transitional element (), said transitional element () being positioned between the drive and/or reception device and the inner oscillating body for the purpose of transmitting the oscillations between the drive and/or reception device and the inner oscillating body, and said transitional element () running in part, with one wall (), in a lateral direction adjacent to the diaphragm (); the clamping device, which clamps the diaphragm () and the drive and/or reception device in such a way that the drive and/or reception device is clamped against the transitional element; and a gap (s) between the adjacent walls () of the diaphragm () and of the transitional element (). The design and dimensions of the gap permit the free oscillation of the diaphragm vis-a-vis the transitional element. At the same time, when strong lateral displacing forces are exerted on the outer oscillating body, the diaphragm will come up against the adjacent wall due to the smaller dimensions of the gap, with the result that a plastic deformation of the diaphragm is avoided. Also prevented is the disengagement of the drive and/or reception device.

Growing community of inventors

Tuningen, Germany

Holger Gruhler