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 electrodes

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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Withdrawn
Application number
DE1999152062
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German (de)
Inventor
Michael Johannes Jensen
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1999152062 priority Critical patent/DE19952062A1/en
Publication of DE19952062A1 publication Critical patent/DE19952062A1/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators

Abstract

The noise energy converter has a flat piezoelectric material subjected to gas pressure and deformed in microscopic regions by unregulated thermodynamically originated pressure fluctuations that are converted into surface voltages that are picked up by microscopic surface electrodes and used for electrical power supply in a conventional manner.

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)

Rauschenergieumwandler, gekennzeichnet dadurch, daß ein flächiges piezoelektrisches Material, das von einem Gasdruck beaufschlagt wird, im mikroskopischen Bereich durch regellose, thermodynamisch bedingte Druckschwankungen deformiert wird und diese schwankenden Deformationen zu entsprechend wechselnden elektrischen Oberflächenspannungen führen, die durch eine Anzahl von Flächenelektroden im mikroskopischer Größenordnung abgenommen und in konventioneller Weise zur elektrischen Energieversorgung genutzt werden.Noise energy converter, characterized in that a flat piezoelectric material, which is acted upon by a gas pressure, is deformed in the microscopic range by random, thermodynamically induced pressure fluctuations and these fluctuating deformations lead to correspondingly changing electrical surface voltages, which are reduced by a number of surface electrodes of the microscopic order and can be used in a conventional manner for electrical energy supply.
DE1999152062 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 Withdrawn DE19952062A1 (en)

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)

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DE19952062A1 true DE19952062A1 (en) 2000-05-04

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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

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Cited By (13)

* Cited by examiner, † Cited by third party
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

Cited By (20)

* Cited by examiner, † Cited by third party
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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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