New! View global litigation for patent families

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

Info

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
Grant status
Application
Patent type
Prior art keywords
microscopic
pressure
surface
material
noise
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Withdrawn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
Other languages
German (de)
Inventor
Michael Johannes Jensen
Original Assignee
Michael Johannes Jensen
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

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezo-electric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezo-electric 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 Rauschenergieumwandler belonging to the genus of the piezoelectric transducer.

Piezoelektrische Druckaufnehmer dienen der Umwandlung von Druckschwan kungen in eine elektrische Spannung. Piezoelectric pressure transducers are used to convert pressure into an electrical voltage fluctuations.

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 piezolelektrische pressure transducers have a too large effective membrane area, to convert the random pressure fluctuations of the thermal noise that occurs in the microscopic range, into an electrical voltage.

Außerdem werden sie ausschließlich als Sensoren, zum Messen von Druckschwankungen, genutzt. They will also only 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. Therefore, the technological challenge is to develop appropriate piezoelectric pressure transducer with very small effective membrane surfaces, the pressure fluctuations are not used as a measured variable, but as a source of energy.

Diese Aufgabe wird durch den erfindungsgemäßen Rauschenergieumwandler im Wesentlichen gelöst. This problem is solved by the invention Rauschenergieumwandler essentially.

Der erfindungsgemäße Rauschspannungsumwandler besteht aus einem flächigen piezoelektrischen Material, vorzugsweise einer piezoelektrischen Folie, z. The Rauschspannungsumwandler invention consists of a sheet-like piezoelectric material, preferably a piezoelectric film such. B. Polyvenyldifloridfolie (PVDF-Folie). B. Polyvenyldifloridfolie (PVDF film).

Auf dieses piezoelektrischen Material werden dann, z. are then applied to said piezoelectric material, such. B. mittels einer Maske, Flächenelektroden beliebiger Form beidseitig deckungsgleich aufgebracht. B. both sides congruent applied by means of a mask, patch electrodes of arbitrary shape.

Dabei können das Aufdampfen, das Aufdrucken, oder auch andere konventionelle Verfahren als Fertigungstechnologien zur Anwendung kommen. Here, the vapor deposition, the printing, or other conventional methods can be employed as manufacturing technologies applied.

Die Größenordnung, in der diese Flächenelektroden hergestellt werden, liegt vorzugsweise im Mikrometerbereich und darunter. The order in which these surface electrodes are made, 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. By accommodating the PVDF film in a pressure chamber with a gas pressure of about 200 bar, acting on the film in the range of z. B. einem Quadratmikrometer, ein wechselnder Druck von erheblicher Amplitude ein und führt zu einer entsprechenden Deformation der Folie. B. a square micrometers, an alternating pressure of considerable amplitude and causes a corresponding deformation of the film.

Dadurch entsteht an den Flächenelektroden eine ensprechende elektrische Wechselspannung. This results in the surface electrodes a ensprechende alternating electric 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 connected to a rectifier, preferably, so that the AC voltage is converted into a pulsating direct current to a bridge rectifier electrically connected.

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 connected with the other direct current outputs paralell or in series.

Durch die Paralellschaltung eines Kondensators kann die Gleichspannung geglättet werden. Through the parallel connection of a capacitor, the DC voltage can be smoothed.

Die elektrische Energie, die dem Rauschspannungsumwandler entnommen werden kann, entstammt dem Wärmeinhalt des Gases. The electrical energy that can be taken from the Rauschspannungsumwandler, comes from the heat content of the gas.

Daher kühlt das Gas ab und durch einen Wärmeaustauscher muß diese Energie, z. Therefore, the gas cools and through a heat exchanger that energy must, for. B. durch Umgebungswärme, wieder ersetzt werden. B. will be replaced again by ambient heat.

Bei der PVDF-Folie funktioniert dieser Prozeß voraussichtlich bis zu einer Temperatur von -40°C. In the PVDF film, this process works expected 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 be connected to an ohmic resistance also in each case, which is housed spatially separate from the surface contact.

Hierdurch läßt sich eine Vorrichtung herstellen, durch die sich selbsttätig eine Temperaturdifferenz erzeugen läßt. In this way, a device can be manufactured through which can generate a temperature difference itself.

Um eine Depolarisation der PVDF-Folie zu verhindern, kann an den beiden. In order to prevent depolarization of the PVDF film, can be applied to both. Außenseiten der Folie elektrisch isoliert eine Metallfolie angebracht werden, an die permanent eine elektrische Spannung angelegt wird. Outer sides of the film are electrically insulated metal foil be mounted permanently, an electrical voltage is applied to the.

Das elektrische Feld greift so dann durch die Folie hindurch und sorgt so für deren ständige Polarisierung. The electric field then engages so through the foil and thus ensures their constant polarization.

Die Aufrechterhaltung dieses elektrischen Hilfsfeldes benötigt nur eine sehr geringe Energiemenge und kann durch den Rauschenergieumwandler selbst gewährleistet werden. Maintaining this auxiliary electric field requires only a very small amount of energy and can be ensured by the Rauschenergieumwandler itself.

Claims (1)

  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. Rauschenergieumwandler, characterized in that a sheet-like piezoelectric material which is acted upon by a gas pressure, is deformed in the microscopic range by random, thermodynamically-induced pressure fluctuations and supply these fluctuating deformations correspondingly alternating electric surface tensions removed by a number of surface electrodes in a microscopic order of magnitude as used in a conventional manner for supplying electrical power.
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)

Publication Number Publication Date
DE19952062A1 true 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)

* 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
US7320457B2 (en) 1997-02-07 2008-01-22 Sri International Electroactive polymer devices for controlling fluid flow
US7034432B1 (en) 1997-02-07 2006-04-25 Sri International Electroactive polymer generators
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
US7394182B2 (en) 1999-07-20 2008-07-01 Sri International Electroactive polymer devices for moving fluid
US7064472B2 (en) 1999-07-20 2006-06-20 Sri International Electroactive polymer devices for moving fluid
US7971850B2 (en) 1999-07-20 2011-07-05 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
WO2001063738A3 (en) * 2000-02-23 2002-02-21 Stanford Res Inst Int Electroactive polymer thermal electric generators
US6628040B2 (en) 2000-02-23 2003-09-30 Sri International Electroactive polymer thermal electric generators
US6768246B2 (en) 2000-02-23 2004-07-27 Sri International Biologically powered electroactive polymer generators
WO2001063738A2 (en) * 2000-02-23 2001-08-30 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

Similar Documents

Publication Publication Date Title
Dan et al. Intrinsic response of graphene vapor sensors
Cahan et al. AC impedance investigations of proton conduction in Nafion™
Lipomi et al. Skin-like pressure and strain sensors based on transparent elastic films of carbon nanotubes
Williamson et al. Comparison of high-voltage ac and pulsed operation of a surface dielectric barrier discharge
Kofod et al. Actuation response of polyacrylate dielectric elastomers
Drougard et al. Domain clamping effect in barium titanate single crystals
Bezrukov et al. Noise-induced enhancement of signal transduction across voltage-dependent ion channels
Southgate Room‐temperature poling and morphology changes in pyroelectric polyvinylidene fluoride
Avasarala et al. Effect of surface roughness of composite bipolar plates on the contact resistance of a proton exchange membrane fuel cell
Nusimovici et al. Lattice dynamics of wurtzite: CdS. II
Sriraman et al. Magnetic Study of the Amino Group
JPS5691464A (en) Semiconductor device
DE3933956A1 (en) Force-cooled power resistor e.g. for railway locomotive converter - is of flat metal sheet of high specific electrical resistance presenting large cooling area
JPH01309242A (en) Surface conductive type emission element and image display device using the same
US2237006A (en) Electric hygrometer
Orazem et al. Critical issues associated with interpretation of impedance spectra
Sun et al. Room temperature detection of individual molecular physisorption using suspended bilayer graphene
Brockett et al. Electrical networks containing controlled switches
Wendt et al. The ac corrosion of stainless steel—II. The breakdown of passivity of ss304 in neutral aqueous solutions
Abyaneh et al. Giant piezoresistive response in zinc–polydimethylsiloxane composites under uniaxial pressure
DE4335004A1 (en) Sensor
Rehbein et al. NOx production in spark and corona discharges
Kolesar et al. Interdigitated gate electrode field effect transistor for the selective detection of nitrogen dioxide and diisopropyl methylphosphonate
Briere Electrical conduction in purified polar liquids
Gridchin et al. The four-terminal piezotransducer: theory and comparison with piezoresistive bridge

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