EP4114585A1 - Wasserschallwandler - Google Patents
WasserschallwandlerInfo
- Publication number
- EP4114585A1 EP4114585A1 EP21707933.4A EP21707933A EP4114585A1 EP 4114585 A1 EP4114585 A1 EP 4114585A1 EP 21707933 A EP21707933 A EP 21707933A EP 4114585 A1 EP4114585 A1 EP 4114585A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- borne sound
- transducer
- electrode
- transducer element
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Soldering of electronic components
-
- 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
- B06B1/0644—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 using a single piezoelectric element
-
- 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
- B06B1/0644—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 using a single piezoelectric element
- B06B1/0655—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 using a single piezoelectric element of cylindrical shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, electron beams [EB]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
- B23K1/18—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams circumferential seams, e.g. of shells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
- B23K33/006—Filling of continuous seams for cylindrical workpieces
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic materials other than metals or composite materials
- B23K2103/52—Ceramics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
Definitions
- the invention relates to pressure-stable water-borne sound transducers, also referred to as hydrophones, and a production method for the same.
- Water-borne transducers typically have a piezoceramic. This can be designed as a hollow body, as a solid body or as a piezocomposite ceramic.
- the water-borne sound converter has electrodes.
- the electronics are then connected to the electrode by means of a wire or a conductive adhesive.
- Soldering a wire during production cannot be automated or can only be automated with great effort.
- the conductive adhesive is often hydrophilic, so that special precautions would have to be taken to ensure a permanently reliable and pressure-stable connection between the electronics and the electrode.
- the object of the present invention is therefore to create an improved concept for water-borne sound converters and their manufacturing method.
- Embodiments show a water-borne transducer with a transducer element which is designed to receive water-borne sound and to output a water-borne sound signal corresponding to the water-borne sound and / or to emit a water-borne sound corresponding to a water-borne signal.
- the transducer element has an electrode which enables electrical contact to be made with the transducer element.
- a circuit board is connected to the electrode, with a solder establishing the electrical and mechanical connection between the circuit board and the Electrode manufactures.
- the mechanical connection is advantageously designed in such a way that the circuit board and the electrode are connected to one another in a hermetically sealed manner. This means that an area within the mechanical connection is hermetically sealed from the outside world.
- an array can be built from the water-borne sound converters with its own array housing that is filled with oil.
- An electronic circuit for example, can be arranged on the circuit board. The electronic circuit can process the water-borne sound signal, ie tap the water-borne sound signal from the water-borne sound converter or apply the water-borne sound signal to the water-borne sound converter.
- the solder is a means that creates an electrically conductive, typically metallic, connection between the electrode and the circuit board by soldering. When soldering, the solder is heated so much that it melts. After cooling, the solder forms a mechanical and electrical (and in exemplary embodiments also hermetically sealed) connection between the electrode and the circuit board.
- the transducer element has, for example, a piezoelectric material, in particular a piezoceramic, as sensor material.
- the piezoelectric material can be arranged as a solid body (e.g. cylinder), as a hollow body (e.g. hollow sphere or hollow cylinder) or as a piezo composite.
- a piezocomposite comprises a multiplicity of rods of the piezoelectric material, which together form a transducer element. Typically, the rods are cast using a potting compound.
- solder the circuit board to the electrode of the transducer element. Soldering the circuit board directly onto the transducer element has the advantage over soldering a wire that it is easier to automate. In this way, the circuit board can be soldered to the transducer element in an automated manner, e.g. by means of reflow soldering.
- At least part of the electronics of the circuit board can even be soldered to the circuit board in the same manufacturing step.
- the soldering of the wire to the circuit board and the transducer element is difficult to automate and is therefore typically done by hand.
- the wire is not very stable mechanically and can break. The situation is similar with the direct soldering of the circuit board on the transducer element compared to gluing by means of a conductive adhesive. Gluing is complex to manufacture.
- the transducer element has a hollow shape, the hollow shape being closed by means of the plate.
- the conductive adhesive is less pressure-resistant compared to the solder and forms the weaker connection overall. The tightness and the electrical contact from the circuit board to the transducer element can be lost if mechanical stress on the conductive adhesive due to expansion (due to temperature changes or swelling of the conductive adhesive) and / or pressure becomes too great.
- the hollow shape can be a hollow cylinder which is closed on one side by the plate.
- the transducer element can, however, also have a further electrode which enables further electrical contact to be made with the transducer element. Contact can thus be made with a first pole of the transducer element by means of the electrode and a second pole of the transducer element by means of the further electrode.
- the circuit board can contact the further electrode, or a further (second) circuit board, which makes contact with the further electrode, is provided. Another solder creates an electrical and mechanical (and in exemplary embodiments, hermetically sealed) connection between the corresponding circuit board and the electrode.
- the second plate (if provided) then closes the hollow cylinder on both sides.
- the first plate closes a first opening of the hollow cylinder and the second plate closes a second opening of the hollow cylinder opposite the first opening.
- the board and, if provided, the further board are connected to an end face of the hollow cylinder by means of the solder.
- the solder is advantageously arranged (completely) circumferentially around the hollow cylinder, so that the solder describes a self-contained path.
- the second opening can, however, also be closed by means of any other terminating element.
- the hollow shape is a spherical half-shell, with the plate on an end face of the Ball half-shell is arranged.
- the board is advantageously arranged in the middle between two spherical half-shells, so that the board closes both spherical half-shells to form a full sphere.
- the two spherical half-shells form a connected transducer element made up of two transducer elements connected in series or separate transducer elements in each case.
- Such water-borne sound transducers which have a hollow body and are closed by means of the circuit board, have the advantage that they have a hermetically sealed space inside. Electronics can be arranged there, which are protected from interference from external electrical fields. By using the circuit board to close the hollow body, it is also no longer necessary to provide a bore in the hollow body through which a wire for making contact with the internal electrode can be guided into the hollow body.
- the transducer element comprises the sensory material which has a Curie temperature of more than 300 ° C, in particular more than 340 ° C. It has been shown that the sensory material is sensitive to heat. If the sensory material is exposed to too high a temperature, that is to say to a temperature greater than half the Curie temperature, for too long a period of time, the sensory material loses its necessary polarization. At temperatures whose value is higher than half the Curie temperature in degrees Celsius, the duration of the temporal temperature action must be limited in order to prevent depolarization effects. It is thus possible to use a soldering process in which the maximum temperature is well above half the Curie temperature.
- a temporal temperature profile is used so that the maximum soldering temperature is only applied to the component or the circuit board for a period of a maximum of 40s, for example approx. 30s. The entire duration of the soldering process is several minutes.
- One possible sensory material is PZT5 (lead zirconate titanate 5). This has a Curie temperature of 340-380 ° C so that common solders (both lead and lead-free) can be used in circuit board production.
- a low-temperature solder that has a melting temperature (or liquidus temperature) of less than 180 ° C, in particular less than 165 ° C, having.
- piezoceramic materials with Curie temperatures ⁇ 300 ° C can also be used.
- the circuit board and the electrode are connected electrically and mechanically (in exemplary embodiments also hermetically sealed) by means of reflow soldering. This enables the automation of the soldering in a standardized process.
- the circuit board and the electrode are connected electrically and mechanically (in exemplary embodiments also hermetically sealed) by means of laser reflow soldering.
- Laser reflow soldering is more complex and expensive but can still be automated.
- the advantage of laser reflow soldering is that the laser beam generates selective heat. This allows the laser to melt the solder without noticeably heating the sensory material. With the help of this process, all piezoceramic materials can be used, regardless of their Curie temperature.
- a contact surface for example an end face, on which the transducer element and the circuit board touch, has the absence of the electrode.
- this has the advantage that an outer electrode drawn onto the contact surface does not need to be insulated from the inner electrode (or vice versa). This simplifies the manufacturing process and reduces the risk of a short circuit between the outer electrode and the inner electrode.
- the electrode is arranged essentially perpendicular to the board. The solder is then arranged in the resulting angle between the electrode and the circuit board and connects the two with one another.
- a method for producing a water-borne transducer is shown with the following steps: providing a transducer element which is designed to receive water-borne sound and to output a water-borne sound signal corresponding to the water-borne sound and / or to emit a water-borne sound corresponding to a water-borne signal; Applying a solder to a circuit board and / or an electrode of the transducer element, so that the solder, when the The transducer element and the circuit board are brought together, the circuit board and the electrode are in contact; Heating the solder so that an electrical and mechanical (in exemplary embodiments also hermetically sealed) connection is created between the transducer element and the circuit board.
- FIG. 1 shows a schematic view of a cylindrical water-borne sound transducer, FIG. 1a showing a schematic perspective illustration, FIG. 1b a schematic sectional illustration of a hollow-cylindrical embodiment of the water-borne sound transducer, and FIG. 1c a schematic sectional illustration of a fully cylindrical embodiment of the water-borne sound transducer;
- FIG. 2 a schematic view of a spherical water-borne sound transducer, FIG. 2a showing a schematic side view and FIG. 1b showing a schematic sectional illustration; and
- FIG. 3 shows a schematic view of a double-hollow-cylindrical water-borne sound transducer, FIG. 3a showing a schematic perspective illustration and FIG. 3b showing a schematic sectional illustration.
- the water-borne sound transducer 20 has a transducer element 22.
- the transducer element 22 can receive water-borne sound and output a water-borne sound signal corresponding to the water-borne sound and / or corresponding to a water-borne sound signal Emit water-borne noise.
- the transducer element 22 has an electrode (cf. reference number 24 in FIGS. 1b and 1c) which enables electrical contact to be made with the transducer element 22.
- a circuit board 26 is connected to the electrode.
- a solder 28 establishes an electrical and mechanical connection between the circuit board 26 and the electrode 24.
- solder is advantageously arranged completely circumferentially around the transducer element or the circuit board, so that the solder forms a self-contained (circular) path.
- the solder then also forms a hermetically sealed connection between the transducer element and the circuit board.
- the solder is typically a solder paste.
- This perspective view allows both fully cylindrical and hollow cylindrical transducer elements 22.
- an (arbitrary) closing element 32 can (hermetically) close the cavity of the hollow cylinder (cf. FIG. 1b).
- a further circuit board 26 ' which, like circuit board 26, makes contact with the transducer element.
- the explanations regarding the contacting of the circuit board 26 with the solder can also be transferred to the circuit board 26 ′.
- the perspective illustration shown includes both hollow-cylindrical transducer elements and full-cylindrical transducer elements.
- FIG. 1b shows a hollow cylindrical transducer element 22.
- the electrode 24 is arranged on the lateral surface, in particular on the inner and outer lateral surface, of the transducer element 22.
- the solder 28 is then not arranged flat between the circuit board 26 and the electrode 24, but it is sufficient that the solder rather fills an angle that is enclosed by the electrode 24 and the circuit board 26.
- another solder 28a can be arranged in the cavity of the hollow cylinder 22, and contact another electrode 24a, which is arranged on the opposite (here inner) lateral surface of the hollow cylinder.
- the closing element 32 is shown as an example in order to (hermetically) close the cavity of the hollow cylinder. Electronics 30 arranged in the cavity are then protected against external interference, for example by electrical fields.
- the closing element can also be a circuit board.
- the further solder 28a can then be arranged at an opposite end of the hollow cylinder. In other words, the solder 28a can then connect the further electrode 24a to the further circuit board 26 '.
- the comments on Lot 28 can also be transferred to Lot 28a.
- FIG. 1c shows a schematic sectional illustration of a fully cylindrical transducer element 22 without a cavity.
- the electrodes 24, 24a are arranged on the end face and on the opposite (second) end face of the transducer element 22. That is, the electrode is arranged parallel to the board.
- the further solder 28a connects the further board 26 'to the further electrode 24' of the transducer element 22.
- the solders 28, 28a are then arranged between the transducer element or electrode and the corresponding board.
- Fig. 2 shows an embodiment of a hollow spherical water-borne sound transducer 20.
- Fig. 2a shows the water-borne sound transducer in a schematic side view
- the water-borne sound transducer 20 has two transducer elements 22, 22 ', which are each shaped as a spherical half-shell.
- the circuit board 26 is arranged between the spherical shells and connects them to form a hollow sphere.
- the board can be designed flat. In Fig. 2b, however, it is shown with an opening in the interior of the hollow sphere. This is advantageous in order not to adversely affect the acoustic properties of the water-borne sound transducer 20.
- the board is advantageously at least a two-sided board.
- the electronic circuit 30 can optionally be accommodated on the circuit board 26.
- the electronic circuit 30 is then advantageously arranged on the circuit board 26 in such a way that the electronic circuit is arranged in the cavity in the interior of the transducer element 22.
- the electronic circuit 30 can, however, also be arranged outside the converter element 22.
- the transducer element 22, ie the first half-shell has an electrode 24 and a further electrode 24a.
- the first electrode 24 is connected to the circuit board 26 by means of the solder 28.
- the second electrode 24a is connected to the circuit board 26 by means of the solder 28a.
- the transducer element 22 ', ie the second half-shell has an electrode 24' and a further electrode 24'a.
- the first electrode 24 ′ is connected to the circuit board 26 by means of the solder 28 ′.
- the second electrode 24'a is connected to the circuit board 26 by means of the solder 28'a.
- the first half-shell is advantageously connected to a first side of the circuit board 26 and the second half-shell to a second side of the circuit board 26.
- Fig. 3 shows a schematic representation of a further embodiment with double cylindrical transducer elements 22, 22 '.
- two hollow cylinders are connected here as separate transducer elements 22, 22 ′ by means of the circuit board 26.
- the hollow cylinders each have a closing element 32, 32 '.
- the further structural features can be taken from the exemplary embodiments relating to FIGS. 1 and 2 with the aid of the reference symbols.
- electronic circuit 30 is additionally shown, which is arranged on the circuit board.
- the electronic circuit 30 can process the water-borne sound signals picked up at the electrodes 24, 24a, 24 ', 24'a or provide a water-borne sound signal that is applied to the electrodes.
- the respective outer electrodes 24, 24 ′ can also be electrically connected.
- the transducer elements 22, 22 ' With an opposite polarization of the transducer elements 22, 22 ', the transducer elements are connected in series so that a water-borne sound signal, for example as a voltage, can be tapped or provided at the inner electrodes 24a, 24'a.
- the water-borne sound transducers described can all have a radially symmetrical shape. However, this does not apply to any electronics. Furthermore, a form the board can also be square instead of round, so that this too is not necessarily radially symmetrical.
- the disclosed (water) sound transducers are designed for use under water, in particular in the sea.
- the sound transducers are designed to convert water-borne sound into an electrical signal (e.g. voltage or current) corresponding to the sound pressure, the water-borne sound signal.
- the sound transducers are designed to convert an applied electrical voltage into water-borne sound.
- the sound transducers can accordingly be used as water-borne sound converters and / or as water-borne sound transmitters.
- the sound transducers typically have a piezoelectric material, for example a piezoceramic, as the sensor material.
- the transducers can be used for (active and / or passive) sonar (sound navigation and ranging).
- the sound transducers are not suitable for medical applications.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Optics & Photonics (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020202773.0A DE102020202773A1 (de) | 2020-03-04 | 2020-03-04 | Wasserschallwandler |
| PCT/EP2021/054356 WO2021175643A1 (de) | 2020-03-04 | 2021-02-22 | Wasserschallwandler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4114585A1 true EP4114585A1 (de) | 2023-01-11 |
Family
ID=74732895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21707933.4A Pending EP4114585A1 (de) | 2020-03-04 | 2021-02-22 | Wasserschallwandler |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4114585A1 (de) |
| DE (1) | DE102020202773A1 (de) |
| WO (1) | WO2021175643A1 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866683A (en) * | 1988-05-24 | 1989-09-12 | Honeywell, Inc. | Integrated acoustic receiver or projector |
| EP0609561A1 (de) * | 1993-02-04 | 1994-08-10 | Landis & Gyr Technology Innovation AG | Messwandler |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933919A (en) * | 1989-05-18 | 1990-06-12 | Westinghouse Electric Corp. | Hydrophone |
| US5148962A (en) * | 1991-05-20 | 1992-09-22 | General Electric Company | Holder for soldering a flexible circuit board to a substrate |
| US5467779A (en) * | 1994-07-18 | 1995-11-21 | General Electric Company | Multiplanar probe for ultrasonic imaging |
| US6215231B1 (en) * | 1998-05-04 | 2001-04-10 | The Penn State Research Foundation | Hollow sphere transducers |
| DE10212291C1 (de) * | 2002-03-20 | 2003-11-20 | Stn Atlas Elektronik Gmbh | Unterwasserantenne |
| DE102008029269A1 (de) | 2008-06-19 | 2009-12-24 | Atlas Elektronik Gmbh | Hydrophon für eine Unterwasserantenne |
| US9470806B2 (en) | 2013-08-29 | 2016-10-18 | Pgs Geophysical As | Piezoelectric accelerometer |
| DE102016104399A1 (de) | 2016-03-10 | 2017-09-14 | Atlas Elektronik Gmbh | Schallwandler zum senden und/oder empfangen von unterwasserschallsignalen, unterwasserantenne, sonar und wasserfahrzeug |
| US20180321402A1 (en) | 2017-05-03 | 2018-11-08 | Pgs Geophysical As | Geophysical sensor cables |
| RU2678956C1 (ru) | 2018-03-07 | 2019-02-04 | Общество с ограниченной ответственностью "СИ ТЕХНОЛОДЖИ" | Гидрофон |
| DE102019200754A1 (de) | 2019-01-22 | 2020-07-23 | Atlas Elektronik Gmbh | Piezokeramisches Hydrophon mit metallischer Beschichtung |
-
2020
- 2020-03-04 DE DE102020202773.0A patent/DE102020202773A1/de active Pending
-
2021
- 2021-02-22 EP EP21707933.4A patent/EP4114585A1/de active Pending
- 2021-02-22 WO PCT/EP2021/054356 patent/WO2021175643A1/de not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866683A (en) * | 1988-05-24 | 1989-09-12 | Honeywell, Inc. | Integrated acoustic receiver or projector |
| EP0609561A1 (de) * | 1993-02-04 | 1994-08-10 | Landis & Gyr Technology Innovation AG | Messwandler |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020202773A1 (de) | 2021-09-09 |
| WO2021175643A1 (de) | 2021-09-10 |
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