WO2011147430A1 - Vorrichtung und verfahren zur erfassung von schwingungen - Google Patents
Vorrichtung und verfahren zur erfassung von schwingungen Download PDFInfo
- Publication number
- WO2011147430A1 WO2011147430A1 PCT/EP2010/003194 EP2010003194W WO2011147430A1 WO 2011147430 A1 WO2011147430 A1 WO 2011147430A1 EP 2010003194 W EP2010003194 W EP 2010003194W WO 2011147430 A1 WO2011147430 A1 WO 2011147430A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- mass system
- cover
- mass
- electrode
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003534 oscillatory effect Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 1
- 241001124569 Lycaenidae Species 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000758 substrate Substances 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
- H02N2/186—Vibration harvesters
- H02N2/188—Vibration harvesters adapted for resonant operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B3/00—Devices comprising flexible or deformable elements, e.g. comprising elastic tongues or membranes
- B81B3/0018—Structures acting upon the moving or flexible element for transforming energy into mechanical movement or vice versa, i.e. actuators, sensors, generators
- B81B3/0021—Transducers for transforming electrical into mechanical energy or vice versa
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B3/00—Devices comprising flexible or deformable elements, e.g. comprising elastic tongues or membranes
- B81B3/0035—Constitution or structural means for controlling the movement of the flexible or deformable elements
- B81B3/0056—Adjusting the distance between two elements, at least one of them being movable, e.g. air-gap tuning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/06—Influence generators
- H02N1/08—Influence generators with conductive charge carrier, i.e. capacitor machines
-
- 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
- H02N2/181—Circuits; Control arrangements or methods
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
- H10N30/302—Sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B2201/00—Specific applications of microelectromechanical systems
- B81B2201/02—Sensors
- B81B2201/0228—Inertial sensors
- B81B2201/0235—Accelerometers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B2203/00—Basic microelectromechanical structures
- B81B2203/01—Suspended structures, i.e. structures allowing a movement
- B81B2203/0136—Comb structures
Definitions
- Microsystems MEMS - micro-electro-mechanical systems, are miniaturized devices developed for a specific task.
- the term microsystem derives from the fact that the components have the smallest dimensions (in the micrometer range) and interact as a system.
- a microsystem consists of one or more sensors, actuators and control electronics on a substrate or chip.
- Energy harvesting is the process of generating electricity from sources such as temperature gradients, vibrations, or air currents Energy sources for wireless sensor networks or applications such as remote controls in hard-to-reach places Energy Harvesting avoids the limitations of wired power or batteries in wireless technologies.
- Sensors and kinetic energy harvesters are also designed as a microsystem.
- the invention relates to a device and an associated method for detecting vibrations.
- it is necessary to tune its natural frequency / resonance frequency to the frequency of the vibration source. Outside this frequency, the extractable power is much lower and, as a rule, too low to supply even electronics with very low energy requirements with sufficient energy.
- the natural frequency of the microsystem can be calculated according to the following equation be adjusted.
- This requires knowledge of the frequencies of interest for energy production.
- the generator must be designed appropriately in advance and is then not universally applicable to all sources of vibration.
- the fixed frequency is also subject to certain tolerances due to manufacturing tolerances.
- the object of the invention is to solve the above-mentioned problems and to provide a device and a method which comprises a tuning principle that requires energy only for setting the intrinsic / resonant frequency. Furthermore, an apparatus and a method are to be specified, which works after setting the frequency in further operation without additional energy consumption.
- the device comprises a vibratory spring-mass system with electrode structures on at least one ner side of the spring-mass system, in particular with a
- the device further comprises a cover, which partially covers the oscillatory spring-mass system or an electrode electrically connected to the oscillatable spring-mass system for natural frequency tuning.
- the object is further achieved according to claim 9 by a method for detecting mechanical vibrations in a vibratory spring-mass system with at least one electrode structure on at least one side, in particular a comb structure. A cover which partially covers the oscillatory spring-mass system or an oscillating mass electrode for natural frequency tuning is shifted.
- the solution according to the invention is a further development of the abovementioned solutions.
- the force F at a comb electrode in the overlap principle is calculated with n number of fingers per comb,
- the device according to the invention can be advantageously used as a generator for generating electrical energy, which converts mechanical vibrations of the oscillatory spring-mass system into electrical energy. In a further advantageous embodiment of the invention, this is alternatively used as a vibration sensor.
- the cover of the oscillatable spring-mass system or an electrode electrically connected to the oscillatable spring-mass system can advantageously also consist of an electret.
- An electret is an electrically insulating material that contains quasi-permanently stored electrical charges or quasi-permanently oriented electrical dipoles and thus generates a quasi-permanent electric field in its environment or in its interior.
- Today electrets are usually made of polymers, but sometimes also of inorganic dielectrics such as silicon dioxide or silicon nitride.
- a novelty of this invention is to change the voltage by changing the effective area of the electret (based on an electrically conductive but electret electrically isolated layer, eg silicon) and thus to influence the resonant frequency.
- the mechanical adjustment can z. B. via an adapted form of the stepping switch and be realized so that it is self-holding (for example, via pawls or notches).
- Resonance tuning of the oscillatory system can be autonomous without manual intervention by the user.
- the device according to the invention includes at least two electrode structures, which are located on two, opposite sides of the oscillatory spring-mass system.
- the device can be embodied at least partially as a micromechanical structure.
- 1 a shows a schematic representation of the plan view to illustrate the variable coverage u of the electret with the underlying conductive material (here silicon),
- FIG. 1b Associated side view with schematic representation
- FIG. 1c shows simulation results for the power drop over R to clarify the resonance shift for the illustrated system by changing U po i on the basis of FIG
- FIG. 1 shows schematically the idea of this invention using the example of a capacitive Energy Harvesters.
- Ci and C 2 change but in opposite directions. Due to the high-resistance resistors R (for example, the consumers can be with the energy harvesters), the charges from the variable capacitors can only flow off with a delay.
- FIG. 2 shows a further embodiment of the invention.
- the resonant frequency of a piezoelectric harvester or piezoelectric / piezoresistive sensor is here also controlled by the fact that the overlap between
- Electret and the silicon surface is designed variable and can thus adjust the electrical voltage at the comb electrodes.
- the comb electrodes exert electrostatic forces on the oscillator, which act in the direction of the zero position.
- the overall spring stiffness is thus increased.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Micromachines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2010/003194 WO2011147430A1 (de) | 2010-05-26 | 2010-05-26 | Vorrichtung und verfahren zur erfassung von schwingungen |
DE112010005588.2T DE112010005588B4 (de) | 2010-05-26 | 2010-05-26 | Vorrichtung und Verfahren zur Erfassung von Schwingungen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2010/003194 WO2011147430A1 (de) | 2010-05-26 | 2010-05-26 | Vorrichtung und verfahren zur erfassung von schwingungen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011147430A1 true WO2011147430A1 (de) | 2011-12-01 |
Family
ID=43530615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/003194 WO2011147430A1 (de) | 2010-05-26 | 2010-05-26 | Vorrichtung und verfahren zur erfassung von schwingungen |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112010005588B4 (de) |
WO (1) | WO2011147430A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012217510A1 (de) * | 2012-09-27 | 2014-03-27 | Siemens Aktiengesellschaft | Schwingungsmessung eines schwingenden Objektes |
CN105897047A (zh) * | 2016-04-11 | 2016-08-24 | 西安交通大学 | 一种将连续位移转变为冲击载荷的梳子俘能器 |
CN111051235A (zh) * | 2017-08-09 | 2020-04-21 | 国立大学法人静冈大学 | Mems振动元件、mems振动元件的制造方法及振动发电元件 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19808549A1 (de) * | 1998-02-28 | 1999-09-02 | Bosch Gmbh Robert | Mikromechanische Kammstruktur |
US20040207369A1 (en) * | 2003-04-18 | 2004-10-21 | Landolt Oliver D. | Electromechanical power converter |
DE102005050351A1 (de) * | 2005-10-20 | 2007-04-26 | Siemens Ag | Vibrationsmesssystem |
US20070214890A1 (en) * | 2006-01-31 | 2007-09-20 | Ranjan Mukherjee | MEMS resonator using frequency tuning |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6430998B2 (en) * | 1999-12-03 | 2002-08-13 | Murata Manufacturing Co., Ltd. | Resonant element |
EP2240399B1 (de) * | 2008-02-11 | 2019-05-29 | Integrated Sensing Systems, Inc. | Mikrofluidische vorrichtung und betriebsverfahren sowie herstellungsverfahren dafür |
-
2010
- 2010-05-26 WO PCT/EP2010/003194 patent/WO2011147430A1/de active Application Filing
- 2010-05-26 DE DE112010005588.2T patent/DE112010005588B4/de not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19808549A1 (de) * | 1998-02-28 | 1999-09-02 | Bosch Gmbh Robert | Mikromechanische Kammstruktur |
US20040207369A1 (en) * | 2003-04-18 | 2004-10-21 | Landolt Oliver D. | Electromechanical power converter |
DE102005050351A1 (de) * | 2005-10-20 | 2007-04-26 | Siemens Ag | Vibrationsmesssystem |
US20070214890A1 (en) * | 2006-01-31 | 2007-09-20 | Ranjan Mukherjee | MEMS resonator using frequency tuning |
Non-Patent Citations (6)
Title |
---|
SCHEIBNER ET AL: "A Frequency Selective Silicon Vibration Sensor with Direct Electrostatic Stiffness Modulation", ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, KLUWER ACADEMIC PUBLISHERS, BO, vol. 37, 1 January 2003 (2003-01-01), pages 35 - 43, XP009137896, ISSN: 1573-1979 * |
SCHEIBNER, D.: "A Frequency Selective Silicon Vibration Sensor with Direct Electrostatic Stiffness Modulation", ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, vol. 37, 2003, pages 35 - 43 |
STERKEN T ET AL: "An electret-based electrostatic /spl mu/-generator", TRANSDUCERS, SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS, 12TH INN ATIONAL CONFERENCE ON, 2003, PISCATAWAY, NJ, USA,IEEE, vol. 2, 9 June 2003 (2003-06-09), pages 1291 - 1294, XP010647587, ISBN: 978-0-7803-7731-8 * |
STERKEN, T.; FIORINI, P.; BAERT, K.; PUERS, R.; BORGHS, G.: "An elektret based electrostatic g-generator.", PROC. TRANSDUCERS '03, 2003, pages 1291 - 1294 |
WU X ET AL: "A frequency adjustable vibration energy harvester", PROCEEDINGS OF POWER MEMS 2008 +MICROMEMS 2008,, 1 January 2008 (2008-01-01), pages 245 - 248, XP009137898 * |
WU, X.; LIN, J.; KATO, S.; ZHAN, K.; REN, T.; LIU, L.: "A frequency adjustable vibration energy harvester.", PROCEEDINGS OF POWERMEMS 2008 + MICROEMS2008, 2008, pages 245 - 248 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012217510A1 (de) * | 2012-09-27 | 2014-03-27 | Siemens Aktiengesellschaft | Schwingungsmessung eines schwingenden Objektes |
CN105897047A (zh) * | 2016-04-11 | 2016-08-24 | 西安交通大学 | 一种将连续位移转变为冲击载荷的梳子俘能器 |
CN105897047B (zh) * | 2016-04-11 | 2018-01-05 | 西安交通大学 | 一种将连续位移转变为冲击载荷的梳子俘能器 |
CN111051235A (zh) * | 2017-08-09 | 2020-04-21 | 国立大学法人静冈大学 | Mems振动元件、mems振动元件的制造方法及振动发电元件 |
EP3666726A4 (de) * | 2017-08-09 | 2021-04-21 | National University Corporation Shizuoka University | Mems-schwingungselement, herstellungsverfahren für mems-schwingungselement und schwingungsenergieerzeugungselement |
US11117795B2 (en) | 2017-08-09 | 2021-09-14 | National University Corporation Shizuoka University | MEMS vibration element, method of manufacturing MEMS vibration element, and vibration-driven energy harvester |
Also Published As
Publication number | Publication date |
---|---|
DE112010005588A5 (de) | 2013-10-24 |
DE112010005588B4 (de) | 2014-10-30 |
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