DE19952062A1 - Noise energy converter has flat piezoelectric material subjected to gas pressure and deformed in microscopic regions to form surface voltages picked up by microscopic electrodes - Google Patents
Noise energy converter has flat piezoelectric material subjected to gas pressure and deformed in microscopic regions to form surface voltages picked up by microscopic electrodesInfo
- Publication number
- DE19952062A1 DE19952062A1 DE1999152062 DE19952062A DE19952062A1 DE 19952062 A1 DE19952062 A1 DE 19952062A1 DE 1999152062 DE1999152062 DE 1999152062 DE 19952062 A DE19952062 A DE 19952062A DE 19952062 A1 DE19952062 A1 DE 19952062A1
- Authority
- DE
- Germany
- Prior art keywords
- microscopic
- deformed
- piezoelectric material
- energy converter
- gas pressure
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 5
- 239000002033 PVDF binder Substances 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 230000005684 electric field Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000272517 Anseriformes Species 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
Abstract
Description
Der Rauschenergieumwandler gehört zur Gattung der piezoelektrischen Druckaufnehmer.The noise energy converter belongs to the type of piezoelectric Pressure transducer.
Piezoelektrische Druckaufnehmer dienen der Umwandlung von Druckschwan kungen in eine elektrische Spannung.Piezoelectric pressure transducers are used to convert pressure swans into an electrical voltage.
Bekannte piezolelektrische Druckwandler haben eine zu große wirksame Membranfläche, um die regellosen Druckschwankungen des thermischen Rauschens, das im mikroskopischen Bereich auftritt, in eine elektrische Spannung umwandeln zu können.Known piezoelectric pressure transducers are too effective Membrane area to the random pressure fluctuations of the thermal Noise, which occurs in the microscopic range, into an electrical To be able to convert tension.
Außerdem werden sie ausschließlich als Sensoren, zum Messen von Druckschwankungen, genutzt.In addition, they are used exclusively as sensors, for measuring Pressure fluctuations used.
Die technologische Herausforderung besteht daher darin, entsprechende piezoelektrische Druckwandler mit sehr kleinen wirksamen Membranflächen zu entwickeln, wobei die Druckschwankungen nicht als Meßgröße, sondern als Energiequelle genutzt werden.The technological challenge is therefore, appropriate piezoelectric pressure transducers with very small effective membrane areas to develop, the pressure fluctuations not as a measured variable, but be used as an energy source.
Diese Aufgabe wird durch den erfindungsgemäßen Rauschenergieumwandler im Wesentlichen gelöst.This object is achieved by the noise energy converter according to the invention essentially solved.
Der erfindungsgemäße Rauschspannungsumwandler besteht aus einem flächigen piezoelektrischen Material, vorzugsweise einer piezoelektrischen Folie, z. B. Polyvenyldifloridfolie (PVDF-Folie).The noise voltage converter according to the invention consists of a flat piezoelectric material, preferably one piezoelectric film, e.g. B. Polyvinyl difloride film (PVDF film).
Auf dieses piezoelektrischen Material werden dann, z. B. mittels einer Maske, Flächenelektroden beliebiger Form beidseitig deckungsgleich aufgebracht.On this piezoelectric material, z. B. by means of a Mask, surface electrodes of any shape congruent on both sides upset.
Dabei können das Aufdampfen, das Aufdrucken, oder auch andere konventionelle Verfahren als Fertigungstechnologien zur Anwendung kommen.The evaporation, the printing, or other conventional processes as manufacturing technologies for use come.
Die Größenordnung, in der diese Flächenelektroden hergestellt werden, liegt vorzugsweise im Mikrometerbereich und darunter.The scale in which these surface electrodes are manufactured is preferably in the micrometer range and below.
Durch die Unterbringung der PVDF-Folie in einem Druckraum mit einem Gasinnendruck von ca. 200 bar, wirkt auf die Folie, im Bereich von z. B. einem Quadratmikrometer, ein wechselnder Druck von erheblicher Amplitude ein und führt zu einer entsprechenden Deformation der Folie. By placing the PVDF film in a pressure room with a Internal gas pressure of approx. 200 bar acts on the film in the range of e.g. B. a square micrometer, a changing pressure of considerable Amplitude and leads to a corresponding deformation of the film.
Dadurch entsteht an den Flächenelektroden eine ensprechende elektrische Wechselspannung.This creates a corresponding electrical on the surface electrodes AC voltage.
Die Flächenelektroden werden jeweils mit einem Gleichrichter, vorzugsweise einem Brückengleichrichter, elektrisch leitend verbunden, so daß die Wechselspannung in einen pulsierenden Gleichstrom umgewandelt wird.The surface electrodes are each equipped with a rectifier, preferably a bridge rectifier, electrically connected, so that the alternating voltage turns into a pulsating direct current is converted.
Der Gleichstromausgang des Gleichrichters kann dann mit den anderen Gleichstromausgängen paralell oder in Reihe geschaltet werden.The DC output of the rectifier can then be used with the others DC outputs can be connected in parallel or in series.
Durch die Paralellschaltung eines Kondensators kann die Gleichspannung geglättet werden.By connecting a capacitor in parallel, the DC voltage can to be smoothed.
Die elektrische Energie, die dem Rauschspannungsumwandler entnommen werden kann, entstammt dem Wärmeinhalt des Gases.The electrical energy taken from the noise voltage converter can be derived from the heat content of the gas.
Daher kühlt das Gas ab und durch einen Wärmeaustauscher muß diese Energie, z. B. durch Umgebungswärme, wieder ersetzt werden.Therefore, the gas cools down and must pass through a heat exchanger Energy, e.g. B. be replaced by ambient heat again.
Bei der PVDF-Folie funktioniert dieser Prozeß voraussichtlich bis zu einer Temperatur von -40°C.This process is expected to work for the PVDF film up to a temperature of -40 ° C.
Statt mit einem Gleichrichter können die Flächenkontakte auch jeweils mit einem ohmschen Widerstand verbunden werden, der räumlich getrennt vom Flächenkontakt untergebracht ist.Instead of using a rectifier, the surface contacts can also be used be connected with an ohmic resistor that is spatially separated from the surface contact.
Hierdurch läßt sich eine Vorrichtung herstellen, durch die sich selbsttätig eine Temperaturdifferenz erzeugen läßt.This allows a device to be manufactured through which can automatically generate a temperature difference.
Um eine Depolarisation der PVDF-Folie zu verhindern, kann an den beiden. Außenseiten der Folie elektrisch isoliert eine Metallfolie angebracht werden, an die permanent eine elektrische Spannung angelegt wird.To prevent depolarization of the PVDF film, you can use the two. A metal foil is attached electrically insulated to the outside of the foil to which an electrical voltage is permanently applied.
Das elektrische Feld greift so dann durch die Folie hindurch und sorgt so für deren ständige Polarisierung.The electric field then reaches through the film and provides so for their constant polarization.
Die Aufrechterhaltung dieses elektrischen Hilfsfeldes benötigt nur eine sehr geringe Energiemenge und kann durch den Rauschenergieumwandler selbst gewährleistet werden.The maintenance of this auxiliary electrical field only needs a very small amount of energy and can by the noise energy converter be guaranteed yourself.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999152062 DE19952062A1 (en) | 1999-10-28 | 1999-10-28 | Noise energy converter has flat piezoelectric material subjected to gas pressure and deformed in microscopic regions to form surface voltages picked up by microscopic electrodes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999152062 DE19952062A1 (en) | 1999-10-28 | 1999-10-28 | Noise energy converter has flat piezoelectric material subjected to gas pressure and deformed in microscopic regions to form surface voltages picked up by microscopic electrodes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19952062A1 true DE19952062A1 (en) | 2000-05-04 |
Family
ID=7927252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1999152062 Withdrawn DE19952062A1 (en) | 1999-10-28 | 1999-10-28 | Noise energy converter has flat piezoelectric material subjected to gas pressure and deformed in microscopic regions to form surface voltages picked up by microscopic electrodes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19952062A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001063738A2 (en) * | 2000-02-23 | 2001-08-30 | Sri International | Electroactive polymer thermal electric generators |
US6768246B2 (en) | 2000-02-23 | 2004-07-27 | Sri International | Biologically powered electroactive polymer generators |
US7034432B1 (en) | 1997-02-07 | 2006-04-25 | Sri International | Electroactive polymer generators |
US7064472B2 (en) | 1999-07-20 | 2006-06-20 | Sri International | Electroactive polymer devices for moving fluid |
US7320457B2 (en) | 1997-02-07 | 2008-01-22 | Sri International | Electroactive polymer devices for controlling fluid flow |
US7537197B2 (en) | 1999-07-20 | 2009-05-26 | Sri International | Electroactive polymer devices for controlling fluid flow |
US9195058B2 (en) | 2011-03-22 | 2015-11-24 | Parker-Hannifin Corporation | Electroactive polymer actuator lenticular system |
US9231186B2 (en) | 2009-04-11 | 2016-01-05 | Parker-Hannifin Corporation | Electro-switchable polymer film assembly and use thereof |
US9425383B2 (en) | 2007-06-29 | 2016-08-23 | Parker-Hannifin Corporation | Method of manufacturing electroactive polymer transducers for sensory feedback applications |
US9553254B2 (en) | 2011-03-01 | 2017-01-24 | Parker-Hannifin Corporation | Automated manufacturing processes for producing deformable polymer devices and films |
US9590193B2 (en) | 2012-10-24 | 2017-03-07 | Parker-Hannifin Corporation | Polymer diode |
US9761790B2 (en) | 2012-06-18 | 2017-09-12 | Parker-Hannifin Corporation | Stretch frame for stretching process |
US9876160B2 (en) | 2012-03-21 | 2018-01-23 | Parker-Hannifin Corporation | Roll-to-roll manufacturing processes for producing self-healing electroactive polymer devices |
-
1999
- 1999-10-28 DE DE1999152062 patent/DE19952062A1/en not_active Withdrawn
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7034432B1 (en) | 1997-02-07 | 2006-04-25 | Sri International | Electroactive polymer generators |
US7320457B2 (en) | 1997-02-07 | 2008-01-22 | Sri International | Electroactive polymer devices for controlling fluid flow |
US7537197B2 (en) | 1999-07-20 | 2009-05-26 | Sri International | Electroactive polymer devices for controlling fluid flow |
US7703742B2 (en) | 1999-07-20 | 2010-04-27 | Sri International | Electroactive polymer devices for controlling fluid flow |
US7971850B2 (en) | 1999-07-20 | 2011-07-05 | Sri International | Electroactive polymer devices for controlling fluid flow |
US7064472B2 (en) | 1999-07-20 | 2006-06-20 | Sri International | Electroactive polymer devices for moving fluid |
US7394182B2 (en) | 1999-07-20 | 2008-07-01 | Sri International | Electroactive polymer devices for moving fluid |
US7362032B2 (en) | 1999-07-20 | 2008-04-22 | Sri International | Electroactive polymer devices for moving fluid |
US7368862B2 (en) | 1999-07-20 | 2008-05-06 | Sri International | Electroactive polymer generators |
WO2001063738A3 (en) * | 2000-02-23 | 2002-02-21 | Stanford Res Inst Int | Electroactive polymer thermal electric generators |
WO2001063738A2 (en) * | 2000-02-23 | 2001-08-30 | Sri International | Electroactive polymer thermal electric generators |
US6768246B2 (en) | 2000-02-23 | 2004-07-27 | Sri International | Biologically powered electroactive polymer generators |
US6628040B2 (en) | 2000-02-23 | 2003-09-30 | Sri International | Electroactive polymer thermal electric generators |
US9425383B2 (en) | 2007-06-29 | 2016-08-23 | Parker-Hannifin Corporation | Method of manufacturing electroactive polymer transducers for sensory feedback applications |
US9231186B2 (en) | 2009-04-11 | 2016-01-05 | Parker-Hannifin Corporation | Electro-switchable polymer film assembly and use thereof |
US9553254B2 (en) | 2011-03-01 | 2017-01-24 | Parker-Hannifin Corporation | Automated manufacturing processes for producing deformable polymer devices and films |
US9195058B2 (en) | 2011-03-22 | 2015-11-24 | Parker-Hannifin Corporation | Electroactive polymer actuator lenticular system |
US9876160B2 (en) | 2012-03-21 | 2018-01-23 | Parker-Hannifin Corporation | Roll-to-roll manufacturing processes for producing self-healing electroactive polymer devices |
US9761790B2 (en) | 2012-06-18 | 2017-09-12 | Parker-Hannifin Corporation | Stretch frame for stretching process |
US9590193B2 (en) | 2012-10-24 | 2017-03-07 | Parker-Hannifin Corporation | Polymer diode |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
8122 | Nonbinding interest in granting licenses declared | ||
8139 | Disposal/non-payment of the annual fee |