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Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "Harvester interface"

Morel, Adrien, Alexis Brenes, David Gibus, Elie Lefeuvre, Pierre Gasnier, Gaël Pillonnet, and Adrien Badel. "A comparative study of electrical interfaces for tunable piezoelectric vibration energy harvesting." Smart Materials and Structures 31, no. 4 (March 7, 2022): 045016. http://dx.doi.org/10.1088/1361-665x/ac54e8.

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Abstract The present work deals with tunable electrical interfaces able to enhance both the harvested power and bandwidth of piezoelectric vibration energy harvesters. The aim of this paper is to propose a general, normalized, and unified performance evaluation (with respect to the harvested power and bandwidth) of the various electrical strategies that can tune the harvester’s frequency response. By mean of a thorough analysis, we demonstrate how such interfaces influence the electromechanical generator response through an electrically-induced damping and an electrically-induced stiffness. The choice of the strategy determines these two electrical quantities, and thus the achievable frequency response of the system. Thereafter, we introduce a collection of graphical and analytical tools to compare and analyze single- and multi-tuning electrical strategies, including a qualitative performance evaluation of existing strategies. Finally, we establish a unified comparison of single- and multiple-tuning strategies which is supported by the definition and evaluation of a new optimization criterion. This comparison reveals which strategy performs best depending on the electromechanical coupling of the piezoelectric harvester and on the losses in the electrical interface. Furthermore, it quantifies the power and bandwidth gain brought by single- and multi-tuning strategies. Such quantitative criterion provides guidance for the choice of a harvesting strategy in any specific applicative case.

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Liu, Jiqiang, Junjie Yang, Ruofeng Han, Qisheng He, Dacheng Xu, and Xinxin Li. "Improved Interface Circuit for Enhancing the Power Output of a Vibration-Threshold-Triggered Piezoelectric Energy Harvester." Energies 13, no. 15 (July 25, 2020): 3830. http://dx.doi.org/10.3390/en13153830.

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The vibration-threshold-triggered piezoelectric energy harvester is a new type of piezoelectric energy harvester with a two-stage structure, which can generate electricity in a low frequency environment and recognize vibration intensity at the same time. In this study, a theoretical model of a vibration-threshold-triggered energy harvester was examined, and an equivalent circuit model of the energy harvester was obtained. Then, an interface circuit was proposed that can significantly improve the output power of the energy harvester. The interface circuit achieved impedance matching with the piezoelectric material to maximize the energy collected from the energy harvester. First, we calculated and analyzed the impedance characteristics of the energy harvester, based on the equivalent circuit model. It was found that because the piezoelectric material is in resonance as the energy harvester is in operation, the corresponding impedance is almost resistance. Therefore, a resistance-matching strategy was proposed. Last, we proposed an interface circuit with adjustable input impedance to achieve resistance matching. The experimental results show that the proposed interface circuit can increase the output power of the energy harvester by 48.1–55.7% over that achieved with the standard interface circuit.

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Chen, Yu-Yin, Dejan Vasic, Yuan-Ping Liu, and François Costa. "Study of a piezoelectric switching circuit for energy harvesting with bistable broadband technique by work-cycle analysis." Journal of Intelligent Material Systems and Structures 24, no. 2 (September 27, 2012): 180–93. http://dx.doi.org/10.1177/1045389x12460339.

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In this article, a piezoelectric energy harvesting device comprises a bistable vibrating cantilever beam and a switching-type interface circuit (synchronized switching harvesting on an inductor) is proposed, and the resulting performance is compared to the traditional linear technique. It was known that the synchronized switching techniques increase efficiently the output power of the piezoelectric energy harvester for low-coupled structures. However, the traditional piezoelectric energy harvester based on a cantilever beam is only efficient at resonance. To broaden the available bandwidth, a bistable nonlinear technique was proposed. In this article, the bistable technique and synchronized switching harvesting on an inductor interface are combined together to accomplish a more efficient broadband piezoelectric energy harvester. The power flow and work cycles are adopted to simplify the analysis of the switching techniques and then summarize the increasing performance of the nonlinear piezoelectric harvester. Finally, simulation results and experimental validations show that the proposed integrated device owns larger bandwidth and collects more harvested energy.

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Morel, Adrien, Adrien Badel, Romain Grézaud, Pierre Gasnier, Ghislain Despesse, and Gaël Pillonnet. "Resistive and reactive loads’ influences on highly coupled piezoelectric generators for wideband vibrations energy harvesting." Journal of Intelligent Material Systems and Structures 30, no. 3 (November 18, 2018): 386–99. http://dx.doi.org/10.1177/1045389x18810802.

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One of the main challenges in energy harvesting from ambient vibrations is to find efficient ways to scavenge the energy, not only at the mechanical system resonance but also on a wider frequency band. Instead of tuning the mechanical part of the system, as usually proposed in the state of the art, this article develops extensively the possibility to tune the properties of the harvester using the electrical interface. Due to the progress in materials, piezoelectric harvesters can exhibit relatively high electromechanical coupling: hence, the electrical part can now have a substantial influence on the global parameters of the piezoelectric system. In order to harness the energy efficiently from this kind of generator on a wide frequency band, not only the electrical load’s effect on the harvester’s damping should be tuned but also its effect on the harvester’s stiffness. In this article, we present an analytical analysis of the influences of the resistive and reactive behavior of the electrical interface on highly coupled piezoelectric harvesters. We develop a normalized study of the multiphysics interactions, reducing the number of parameters of the problem to a few physically meaningful variables. The respective influence of each of these variables on the harvesting power has been studied and led us to the optimal electrical damping expression and the influences of the damping and of the coupling on the equivalent admittance of the piezoelectric energy harvester. Finally, we linked these normalized variables with real reactive load expressions, in order to study how a resistive, capacitive, and inductive behavior could affect the global performances of the system. The theoretical analysis and results are supported by experimental tests on a highly coupled piezoelectric system [Formula: see text]. Using an adequate tuning of a RC load at each frequency, the maximum harvested power [Formula: see text] under a small acceleration amplitude of [Formula: see text] is reached over a 14 Hz large frequency band around 105 Hz which has been predicted by the model with less than 5% error.

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Aranda, Jesus Javier, Sebastian Bader, and Bengt Oelmann. "Self-Powered Wireless Sensor Using a Pressure Fluctuation Energy Harvester." Sensors 21, no. 4 (February 23, 2021): 1546. http://dx.doi.org/10.3390/s21041546.

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Condition monitoring devices in hydraulic systems that use batteries or require wired infrastructure have drawbacks that affect their installation, maintenance costs, and deployment flexibility. Energy harvesting technologies can serve as an alternative power supply for system loads, eliminating batteries and wiring requirements. Despite the interest in pressure fluctuation energy harvesters, few studies consider end-to-end implementations, especially for cases with low-amplitude pressure fluctuations. This generates a research gap regarding the practical amount of energy available to the load under these conditions, as well as interface circuit requirements and techniques for efficient energy conversion. In this paper, we present a self-powered sensor that integrates an energy harvester and a wireless sensing system. The energy harvester converts pressure fluctuations in hydraulic systems into electrical energy using an acoustic resonator, a piezoelectric stack, and an interface circuit. The prototype wireless sensor consists of an industrial pressure sensor and a low-power Bluetooth System-on-chip that samples and wirelessly transmits pressure data. We present a subsystem analysis and a full system implementation that considers hydraulic systems with pressure fluctuation amplitudes of less than 1 bar and frequencies of less than 300 Hz. The study examines the frequency response of the energy harvester, the performance of the interface circuit, and the advantages of using an active power improvement unit adapted for piezoelectric stacks. We show that the interface circuit used improves the performance of the energy harvester compared to previous similar studies, showing more power generation compared to the standard interface. Experimental measurements show that the self-powered sensor system can start up by harvesting energy from pressure fluctuations with amplitudes starting at 0.2 bar at 200 Hz. It can also sample and transmit sensor data at a rate of 100 Hz at 0.7 bar at 200 Hz. The system is implemented with off-the-shelf circuits.

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Wang, Shih-Wei, Yi-Wen Ke, Po-Chiun Huang, and Ping-Hsuan Hsieh. "Electromagnetic Energy Harvester Interface Design for Wearable Applications." IEEE Transactions on Circuits and Systems II: Express Briefs 65, no. 5 (May 2018): 667–71. http://dx.doi.org/10.1109/tcsii.2018.2820158.

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Elliott, A. D. T., and P. D. Mitcheson. "Piezoelectric energy harvester interface with real-time MPPT." Journal of Physics: Conference Series 557 (November 27, 2014): 012125. http://dx.doi.org/10.1088/1742-6596/557/1/012125.

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Al-Najati, Ibrahim Ali Hameed, Keng Wai Chan, and Swee-Yong Pung. "Tire strain piezoelectric energy harvesters: a systematic review." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (March 1, 2022): 444. http://dx.doi.org/10.11591/ijpeds.v13.i1.pp444-459.

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Intelligent tires are regular tires with additional sensors attached to measure different parameters, such as pressure, temperature, and tire dynamic condition. Sensors mounted inside tires are usually powered by batteries. An alternative power source for these sensors is piezoelectric energy, which uses piezoelectric patches that can be mounted close to the sensors inside vehicle tires. Piezoelectric energy is a battery-less energy source with a long lifespan and environmentally friendly characteristics. This paper presents a comprehensive review of piezoelectric energy harvesters that harvest vehicle tire strain and convert it to electrical energy to power inner tire sensors. The aim of this review was to characterize the possible available tire piezoelectric strain energy harvesters and their advantages and challenges for each type, shape, and material used by researchers so far. The related articles were categorized according to the installation method of the harvester inside the vehicle tire. The four categories are inner tire treadwall, tire bead–rim interface, tire inner sidewall, and tire bead. The maximum power generated was 2300 mW from a treadwall tire strain piezoelectric harvester. Ten challenges were mentioned and classified into three main groups: host environment, installation method, and scavenging system.

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Anand, Nadish, and Richard Gould. "Analysis of a Symmetrical Ferrofluid Sloshing Vibration Energy Harvester." Fluids 6, no. 8 (August 22, 2021): 295. http://dx.doi.org/10.3390/fluids6080295.

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Ferrofluid sloshing vibration energy harvesters use ferrofluid sloshing movement as a moving magnet between a fixed coil to induce current and, in turn, harvest energy from external excitations. A symmetric ferrofluid sloshing vibration energy harvester configuration is introduced in this study which utilizes four external, symmetrically placed, permanent magnets to magnetize a ferrofluid inside a tank. An external sinusoidal excitation of amplitude 1 m/s2 is imparted, and the whole system is studied numerically using a level-set method to track the sharp interface between ferrofluid and air. The system is studied for two significant length scales of 0.1 m and 0.05 m while varying the four external magnets’ polarity arrangements. All of the system configuration dimensions are parametrized with the length scale to keep the system configuration invariant with the length scale. Finally, a frequency sweep is performed, encompassing the structure’s first modal frequency and impedance matching to obtain the system’s energy harvesting characteristics.

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Dallago, Enrico, Alberto Danioni, Marco Marchesi, Valeria Nucita, and Giuseppe Venchi. "A Self-Powered Electronic Interface for Electromagnetic Energy Harvester." IEEE Transactions on Power Electronics 26, no. 11 (November 2011): 3174–82. http://dx.doi.org/10.1109/tpel.2011.2146277.

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Дисертації з теми "Harvester interface"

HAIDAR, MOHAMMAD. "Wind energy harvester interface for sensor nodes." Doctoral thesis, Università degli studi di Genova, 2021. http://hdl.handle.net/11567/1040050.

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The research topic is developping a power converting interface for the novel FLEHAP wind energy harvester allowing the produced energy to be used for powering small wireless nodes. The harvester’s electrical characteristics were studied and a strategy was developped to control and mainting a maximum power transfer. The electronic power converter interface was designed, containing an AC/DC Buck-Boost converter and controlled with a low power microcontroller. Different prototypes were developped that evolved by reducing the sources of power loss and rendering the system more efficient. The validation of the system was done through simulations in the COSMIC/DITEN lab using generated signals, and then follow-up experiments were conducted with a controllable wind tunnel in the DIFI department University of Genoa. The experiment results proved the functionality of the control algorithm as well as the efficiency that was ramped up by the hardware solutions that were implemented, and generally met the requirement to provide a power source for low-power sensor nodes.

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Hehn, Thorsten [Verfasser], and Yiannos [Akademischer Betreuer] Manoli. "A CMOS Integrated Interface Circuit for Piezoelectric Energy Harvesters = Eine CMOS-Integrierte Schnittstellenschaltung für Piezoelektrische Energy Harvester." Freiburg : Universität, 2014. http://d-nb.info/1123479119/34.

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Rahimi, Arian. "Design And Implementation Of Low Power Interface Electronics For Vibration-based Electromagnetic Energy Harvesters." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613820/index.pdf.

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For many years batteries have been used as the main power sources for portable electronic devices. However, the rate of scaling in integrated circuits and micro-electro-mechanical systems (MEMS) has been much higher than that of the batteries technology. Therefore, a need to replace these temporary energy reservoirs with small sized continuously charged energy supply units has emerged. These units, named as energy harvesters, use several types of ambient energy sources such as heat, light, and vibration to provide energy to intelligent systems such as sensor nodes. Among the available types, vibration based electromagnetic (EM) energy harvesters are particularly interesting because of their simple structure and suitability for operation at low frequency values (<
10 Hz), where most vibrations exits. However, since the generated EM power and voltage is relatively low at low frequencies, high performance interface electronics is required for efficiently transferring the generated power from the harvester to the load to be supplied. The aim of this study is to design low power and efficient interface electronics to convert the low voltage and low power generated signals of the EM energy harvesters to DC to be usable by a real application. The most critical part of such interface electronics is the AC/DC converter, since all the other blocks such as DC/DC converters, power managements units, etc. rely on the rectified voltage generated by this block. Due to this, several state-of-the-art rectifier structures suitable for energy harvesting applications have been studied. Most of the previously proposed rectifiers have low conversion efficiency due to the high voltage drop across the utilized diodes. In this study, two rectifier structures are proposed: one is a new passive rectifier using the Boot Strapping technique for reducing the diode turn-on voltage values
the other structure is a comparator-based ultra low power active rectifier. The proposed structures and some of the previously reported designs have been implemented in X-FAB 0.35 µ
m standard CMOS process. The autonomous energy harvesting systems are then realized by integrating the developed ASICs and the previously proposed EM energy harvester modules developed in our research group, and these systems have been characterized under different electromechanical excitation conditions. In this thesis, five different systems utilizing different circuits and energy harvesting modules have been presented. Among these, the system utilizing the novel Boot Strap Rectifier is implemented within a volume of 21 cm3, and delivers 1.6 V, 80 µ
A (128 µ
W) DC power to a load at a vibration frequency of only 2 Hz and 72 mg peak acceleration. The maximum overall power density of the system operating at 2 Hz is 6.1 µ
W/cm3, which is the highest reported value in the literature at this operation frequency. Also, the operation of a commercially available temperature sensor using the provided power of the energy harvester has been shown. Another system utilizing the comparator-based active rectifier implemented with a volume of 16 cm3, has a dual rail output and is able to drive a 1.46 V, 37 µ
A load with a maximum power density of 6.03 µ
W/cm3, operating at 8 Hz. Furthermore, a signal conditioning system for EM energy harvesting has also been designed and simulated in TSMC 90 nm CMOS process. The proposed ASIC includes a highly efficient AC-DC converter as well as a power processing unit which steps up and regulates the converted DC voltages using an on-chip DC/DC converter and a sub-threshold voltage regulator with an ultra low power management unit. The total power consumption on the totally passive IC is less than 5 µ
W, which makes it suitable for next generation MEMS-based EM energy harvesters. In the frame of this study, high efficiency CMOS rectifier ICs have been designed and tested together with several vibration based EM energy harvester modules. The results show that the best efficiency and power density values have been achieved with the proposed energy harvesting systems, within the low frequency range, to the best of our knowledge. It is also shown that further improvement of the results is possible with the utilization of a more advanced CMOS technology.

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Zhu, Zhenhuan. "Investigation of wireless sensor nodes with energy awareness for multichannel signal measurement." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/investigation-of-wireless-sensor-nodes-with-energy-awareness-for-multichannel-signal-measurement(36d8020b-a6e3-40e3-900e-5e941024990f).html.

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Wireless Sensor Networks (WSNets), consisting of a lot of Wireless Sensor Nodes (WSNs), play an important role in structural health and machine condition monitoring. But the WSNs provided by the current market cannot meet the diversity of application requirements because they have limited functions, unreliable node performance, high node cost, high system redundancy, and short node lifespan. The aim of the research is to design the architecture of a WSN with low power consumption and node cost, which can be dynamically configured according to application requirements for structural health and machine condition monitoring. This research investigates the improvement of node performance and reliability through the new design methodologies and the extension of node lifespan by interfacing energy harvesters and implementing node power management. The main contributions of the research are presented from the following aspects:1. Model development of node architecture for application diversityThe merits of model include: (1) The proposed node architecture can be dynamically configured in terms of application requirements for reducing system redundancy, power consumption and cost; (2) It supports multichannel signal measurement with the synchronous and asynchronous signal sampling modules and three interface circuits; (3)The model parameters can be calculated; (4) As the model is based on discrete electronic components, it can be implemented by using Components-Off-The-Shelf (COTS).2. A novel pipeline design of the built-in ADC inside a microprocessorThe merit of proposed pipeline solution lies in that the sampling time of the built-in ADCs is reduced to one third of the original value, when the ADC operates in sequence sampling mode based on multichannel signal measurement.3. Self-adjusting measurement of sampled signal amplitude This work provides a novel method to avoid the distortion of sampled signals even though the environmental signal changes randomly and over the sampling range of the node ADC. The proposed method can be implemented with four different solutions.4. Interface design to support energy harvesting The proposed interface will allow to: (1) collect the paroxysmal ambient energy as more as possible; (2) store energy to a distribution super-capacitor array; (3) harvest electrical energy at high voltage using piezoelectric materials without any transformer; (4) support the diversity of energy transducers; and (5) perform with high conversion efficiency.5. A new network task scheduling model for node wireless transceiver The model allows to: (1) calculate node power consumption according to network task scheduling; (2) obtain the optimal policy for scheduling network task.6. A new work-flow model for a WSN The model provides an easy way to (1) calculate node power consumption according to the work flow inside a WSN; (2) take fully advantage of the power modes of node electronic components rather than outside factors; (3) improve effectively node design.

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Lechuga, Aranda Jesus Javier. "Interfaces In Hydraulic Pressure Energy Harvesters." Licentiate thesis, Mittuniversitetet, Institutionen för elektronikkonstruktion, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-36106.

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The fourth industrial revolution is here and with it a tidal wave of challenges for its prosperous implementation. One of the greatest challenges frustrating the development of the internet of things, and hence the next industrial revolution, is the powering of wireless sensors, as these depend on batteries with a limited lifetime. Recent advances have shown that energy harvesting technologies can be employed to extend the lifetime of batteries and ultimately replace them, thus facilitating the deployment of autonomous self-powered sensors, key components of the internet of things. Energy harvesting is the process of capturing ambient energy and convertingit into electric power. For energy harvesting devices it is crucial that the transduction of energy is as efficient as possible, meaning that the methods for capturing, interfacing and converting the ambient energy should be understood and characterized for every application. This thesis investigates the harvesting of the energy found in pressure fluctuations in hydraulic systems, a widely used power transmission system used in the industry and consumer applications; the focus is on the fluid interface and energy focusing methods. In summary, the contributions in this thesis show that the methods for converting pressure fluctuations in hydraulic systems to electrical power depend on the hydraulic system environment, in essence, the static pressure and the frequency of the pressure fluctuations. The results can serve as a starting point in the research, design, and development of hydraulic pressure energy harvesters.
Den fjärde industriella revolutionen är här vilket innebär en rad utmaningar för att dess utveckling ska bli framgångsrik. En av de största utmaningarna som begränsar utvecklingen av sakernas internet för industriella tillämpningar är strömförsörjningen av trådlösa sensorer då dessa är beroende av batterier med begränsad livslängd. Nya framsteg har emellertid gjorts med tekniker för energiskördning som gör att livslängden för batterierna kan förlängas ochi förlängningen helt ersätta batterierna. Det, i sin tur, möjliggör autonoma sensorer som är självförsörjande på energi som är viktiga komponenter i sakernas internet. Energiskördning är den process som omvandlar energi som finns i omgivningen till elektrisk energi. För att kunna få ut så mycket energi som möjligt så är det avgörande att energiskördarna gör energiomvandlingen så effektivt som möjligt. Det gör att inhämtning av omgivande energi samt gränssnitt och energiomvandling måste förstås och karakteriseras för varje tillämpning. Den här avhandlingen undersöker energiskördning för hydrauliskasystem där tryckfluktuationer i dessa system är energikällan. Syftet med den här studien är att ta fram metoder för uppskattning och karakterisering av de nödvändiga gränssnitten för inhämtning, fokusering, och omvandling av fluktuationer i hydraultryck till elektrisk energi. Sammanfattningsvis visar avhandlingen att metoder för att omvandla tryckfluktuationer i hydraulsystem till elektrisk energi beror på den hydrauliska systemmiljön där det statiska trycket och frekvensen av tryckfluktuationerna är de viktigaste parametrarna. Resultaten kan fungera som utgångspunkt för fortsatt forskning och utveckling av energiskördare för hydrauliska system.
SMART (Smarta system och tjänster för ett effektivt och innovativt samhälle)

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Luo, Yuzhong. "Membrane extraction with a sorbent interface." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq38251.pdf.

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Elliott, Alwyn David Thomas. "Power electronic interfaces for piezoelectric energy harvesters." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/39965.

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Motion-driven energy harvesters can replace batteries in low power wireless sensors, however selection of the optimal type of transducer for a given situation is difficult as the performance of the complete system must be taken into account in the optimisation. In this thesis, a complete piezoelectric energy harvester system model including a piezoelectric transducer, a power conditioning circuit, and a battery, is presented allowing for the first time a complete optimisation of such a system to be performed. Combined with previous work on modelling an electrostatic energy harvesting system, a comparison of the two transduction methods was performed. The results at 100 Hz indicate that for small MEMS devices at low accelerations, electrostatic harvesting systems outperform piezoelectric but the opposite is true as the size and acceleration increases. Thus the transducer type which achieves the best power density in an energy harvesting system for a given size, acceleration and operating frequency can be chosen. For resonant vibrational energy harvesting, piezoelectric transducers have received a lot of attention due to their MEMS manufacturing compatibility with research focused on the transduction method but less attention has been paid to the output power electronics. Detailed design considerations for a piezoelectric harvester interface circuit, known as single-supply pre-biasing (SSPB), are developed which experimentally demonstrate the circuit outperforming the next best known interface's theoretical limit. A new mode of operation for the SSPB circuit is developed which improves the power generation performance when the piezoelectric material properties have degraded. A solution for tracking the maximum power point as the excitation changes is also presented.

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Madill, Daniel Richard. "Modelling and control of a haptic interface, a mechatronics approach." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq38253.pdf.

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Segal, Alina. "Development of membrane extraction with a sorbent interface for the analysis of environmental and clinical samples." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ65260.pdf.

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Waterhouse, Julie Frances. "A comparison of 2D and 3D interfaces for editing surfaces reconstructed from contours." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq21540.pdf.

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Книги з теми "Harvester interface"

Manoli, Yiannos, and Thorsten Hehn. CMOS Circuits for Piezoelectric Energy Harvesters: Efficient Power Extraction, Interface Modeling and Loss Analysis. Springer, 2014.

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Manoli, Yiannos, and Thorsten Hehn. CMOS Circuits for Piezoelectric Energy Harvesters: Efficient Power Extraction, Interface Modeling and Loss Analysis. Springer London, Limited, 2015.

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Manoli, Yiannos, and Thorsten Hehn. CMOS Circuits for Piezoelectric Energy Harvesters: Efficient Power Extraction, Interface Modeling and Loss Analysis. Springer, 2016.

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Частини книг з теми "Harvester interface"

Stanzione, Stefano, Chris van Liempd та Chris van Hoof. "An Ultra-Low-Power Electrostatic Energy Harvester Interface". У Wideband Continuous-time ΣΔ ADCs, Automotive Electronics, and Power Management, 343–52. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41670-0_18.

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Hehn, Thorsten, and Yiannos Manoli. "Analysis of Different Interface Circuits." In CMOS Circuits for Piezoelectric Energy Harvesters, 41–56. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9288-2_3.

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Daux, Valérie. "Air-Vegetation Interface: An Example of the Use of Historical Data on Grape Harvests." In Frontiers in Earth Sciences, 205–8. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-24982-3_17.

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Wang, Xu. "Analysis of Piezoelectric Vibration Energy Harvester System With Different Interface Circuits." In Frequency Analysis of Vibration Energy Harvesting Systems, 43–68. Elsevier, 2016. http://dx.doi.org/10.1016/b978-0-12-802321-1.00003-0.

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"- Cab, Controls, and Human–Machine Interface." In Combine Harvesters, 416–39. CRC Press, 2015. http://dx.doi.org/10.1201/b18852-19.

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Wang, Xu. "Analysis of Electromagnetic Vibration Energy Harvesters With Different Interface Circuits." In Frequency Analysis of Vibration Energy Harvesting Systems, 69–106. Elsevier, 2016. http://dx.doi.org/10.1016/b978-0-12-802321-1.00004-2.

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Akhakpe, Ighodalo Bassey. "Climate Change and Sustainable Development in Nigeria." In Handbook of Research on Environmental Policies for Emergency Management and Public Safety, 209–22. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3194-4.ch011.

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The chapter assesses the nature and effects of climate change on sustainable development in Nigeria. It observes that climate change has a multifarious effect not only on the environment but also on the socio-economic life of the people. Therefore, if sustainable development is to be realized in the country, climate change should be properly managed through extant public policies. However, if government track records on policies and program implementations is anything to go by, the future of sustainable development is gloomy. This makes an interrogation of the interface between climate change and sustainable development germane. The chapter observes that while government has shown willingness to manage climate change for the sustainability of the environment and its people, certain limitations stand on its path. These include poor policy or program implementation, inadequate funding of climate change management, poor sensitization program on environment management, among others. However, there are opportunities that can be harvested at the state and individual levels.

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Akhakpe, Ighodalo Bassey. "Climate Change and Sustainable Development in Nigeria." In Research Anthology on Environmental and Societal Impacts of Climate Change, 142–55. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3686-8.ch008.

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Poluru, Ravi Kumar, M. Praveen Kumar Reddy, Rajesh Kaluri, Kuruva Lakshmanna, and G. Thippa Reddy. "Agribot." In Advances in Computer and Electrical Engineering, 151–57. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0194-8.ch009.

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This robotic vehicle is a farming machine of significant power and incredible soil clearing limit. This multipurpose system gives a propel technique to sow, furrow, water, and cut the harvests with the least labor and work. The machine will develop the ranch by considering specific line and a section settled at a fixed distance depending on the crop. Moreover, the vehicle can be controlled through voice commands connected via Bluetooth medium using an Android smartphone. The entire procedure computation, handling, checking is planned with engines and sensor interfaced with the microcontroller. The major modules of the vehicle are cultivating, sowing seeds, watering, harvesting the crop. The vehicle will cover the field with the help of the motors fixed which is being controlled with the help of the voice commands given by the user. The main motto of this project is to make the vehicle available and should be operated by everyone even without any technical knowledge.

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Dalton, David R. "A Selection of Grapes." In The Chemistry of Wine. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190687199.003.0024.

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This undistinguished, productive, drought resistant, vigorous white grape, Airén, from the La Mancha region of Spain, was said to be the most widely planted grape in the world. In part the justification for this claim relies upon the observation that it is planted at a very low density! Except for its use in blending to make other wines “lighter,” it has not found wide accep¬tance. In part, it appears that its lack of popularity is the result of what is reported to be a mild, neutral flavor, and advertising has not pushed wines produced from it to the fore. Although it is now common to attempt to analyze the headspace (or ullage) in bottled wine (as well as the wine itself ) by chromatographic and mass spectrometric techniques it is less common to find that the grapes (skin, must, and seeds) are also subjected to such analysis. Nonetheless, the phenolic composition of V. vinifera var Airén was subjected to just such analysis during ripening from véraison to “technological” maturity (i.e., maturity which might actually be earlier than harvest, the latter being the decision of the viticulturist and vintner). The analysis of the ethyl ether extract of macerated skins, seeds, and accumulated solids (the pomace) was undertaken. Procyanidins and anthocyanins which would (the authors claim) interfere with subsequent analysis would not move into the ether phase. It was also found (using controls) that other highly polar materials (e.g., carboxylic acids) were only poorly extracted from the macerated skins and seeds. The isolated compounds and some information about their sources are provided in Figures 14.1 and 14.2. The analysis of the seeds, skin, and must did lead to the conclusion that “the maximum concentrations of benzoic and cinnamic acids and aldehydes and flavonol aglycones and glycosides at the end of the ripening period did not coincide with the minimum concentrations of the flavan-3-ols and hydroxycinnamic tartaric esters.” Depending upon what was sought, this information might thus affect decisions concerning the harvest date.

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Тези доповідей конференцій з теми "Harvester interface"

Silva, Paulo Lacerda da, William Freitas, Elias Alves Moura, and Tales Nereu Bogoni. "Interface Interaction for Grain Harvester Simulator." In 2013 XV Symposium on Virtual and Augmented Reality (SVR). IEEE, 2013. http://dx.doi.org/10.1109/svr.2013.49.

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Vasic, Dejan, and Yunxia Yao. "Piezoelectric energy harvester with PWM electric interface." In 2013 15th European Conference on Power Electronics and Applications (EPE). IEEE, 2013. http://dx.doi.org/10.1109/epe.2013.6631804.

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Li, Bin, Jeong Ho You, and Yong-Joe Kim. "Self-Powered Interface External Circuit for Low-Frequency Acoustic Energy Harvester." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65824.

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We present a self-powered interface external circuit design for multiple piezoelectric oscillators used in our recently developed low-frequency acoustic energy harvester. A synchronized switch harvesting on inductor (SSHI) interface circuit has exhibited a significant improvement in the energy harvesting efficiency of piezoelectric oscillator, compared with a standard circuit in AC/DC conversion. A self-powered SSHI interface circuit was developed to overcome the difficulties of typical SSHI, such as the requirements for external power and displacement sensor. The previous studies on self-powered SSHI only considered a single piezoelectric oscillator. The electrical response and operation of multiple piezoelectric oscillators in self-powered SSHI interface circuit has not been reported. In our previous study, multiple piezoelectric cantilever plates were installed in a quarter-wavelength tube resonator to harvest acoustic energy. The interface circuit for our acoustic energy harvester was not further discussed. In this study, a self-powered series-SSHI circuit (self-powered S-SSHI) for multiple cantilever piezoelectric plates has been studied by circuit simulation software Multisim. The simulation results indicate the total powers increase linearly with the piezoelectric plate numbers for both standard and self-powered S-SSHI circuits. The harvesting efficiency for multiple piezoelectric plates of self-powered S-SSHI is obviously higher than the standard circuit. The total maximum output power of 5 piezoelectric plates reaches 8.417 mW with the areal power density 0.421 mW/cm2. This is 335.2% better than the standard circuit (1.934 mW with the areal power density 0.0967 mW/cm2). Compared with the standard circuit, self-powered S-SSHI circuit significantly enhances the conversion efficiency by increasing the piezoelectric voltages and reducing the phase shifts between piezoelectric sources currents and voltages.

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Cojocariu, Bogdan, Anthony Hill, Alejandra Escudero, Han Xiao, and Xu Wang. "Piezoelectric Vibration Energy Harvester: Design and Prototype." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-85785.

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This paper proposes a new approach for vibration energy harvesting analysis. The research investigates and compares efficiencies of a vibration energy harvesting system with two different electric storage interface circuits. One of the interface circuits is the standard interface circuit comprised of four rectifier diodes connected in a classical single phase bridge. The other interface circuit is a newly proposed interface circuit integrated with a voltage multiplier, an impedance converter and an off shelf booster. To validate the effectiveness of the newly proposed interface circuit, a vibration energy harvesting beam system has been developed in connection with this proposed circuit. The harvested efficiency and harvested power output of the system with the two different electric storage interface circuits have been measured and compared.

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Bedier, Mohammed, and Dimitri Galayko. "A smart energy extraction interface for electrostatic vibrational energy harvester." In 2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS). IEEE, 2016. http://dx.doi.org/10.1109/icecs.2016.7841224.

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Hu, Guobiao, Lihua Tang, Junrui Liang, and Raj Das. "A tapered beam piezoelectric energy harvester shunted to P-SSHI interface." In Active and Passive Smart Structures and Integrated Systems IX, edited by Jae-Hung Han, Shima Shahab, and Gang Wang. SPIE, 2020. http://dx.doi.org/10.1117/12.2554871.

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Qu Tan and Bao-bao Tang. "Performance of a circular piezoelectric plate harvester with a rectified interface." In 2009 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA 2009). IEEE, 2009. http://dx.doi.org/10.1109/spawda.2009.5428890.

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Rahimi, Arian, Ozge Zorlu, Haluk Kulah, and Ali Muhtaroglu. "An interface circuit prototype for a vibration-based electromagnetic energy harvester." In 2010 International Conference on Energy Aware Computing (ICEAC). IEEE, 2010. http://dx.doi.org/10.1109/iceac.2010.5702289.

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Wahbah, Maisam, and Baker Mohammad. "Piezo Electric energy harvester and its interface circuit: Opportunities and challenges." In 2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS). IEEE, 2013. http://dx.doi.org/10.1109/icecs.2013.6815534.

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Skow, Ellen, Kenneth Cunefare, and Alper Erturk. "Design and Modeling of Hydraulic Pressure Energy Harvesters for Low Dynamic Pressure Environments." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38684.

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Hydraulic Pressure Energy Harvesters (HPEHs) use the direct piezoelectric effect to extract electrical power from the dynamic pressure ripple present in hydraulic systems. As with other energy harvesters, an HPEH is intended to be an enabling technology for powering sensor nodes. To date, HPEH devices have been developed for high-pressure, high-dynamic pressure ripple systems. High-pressure applications are common in industrial hydraulics, where static pressures may be up to 35 MPa. Other fluid systems, such as cross-country pipelines as well as water distribution networks operate at much lower pressures, e.g., from around 1 to 4 MPa, with proportionally lower dynamic pressures. Single-crystal piezoelectric materials are incorporated into the HPEH design, along with means to increase the load transfer into the piezoelectric material as well as increased output harvester circuits, so as to increase the power output of these devices. The load transfer from the pressurized fluid into the piezoelectric material is through an interface, where the interface area may be designed such that the area exposed to the fluid is greater than the cross-sectional area of the piezoelectric, yielding higher stress in the material than the pressure in the fluid. Furthermore, given the relatively large capacitance of the piezoelectric elements used in HPEH devices, inductive-tuned resonant harvester circuits implemented with passive elements are feasible. HPEH devices integrating these features are shown to produce viable power outputs from low dynamic pressure systems.

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Звіти організацій з теми "Harvester interface"

Blumwald, Eduardo, and Avi Sadka. Sugar and Acid Homeostasis in Citrus Fruit. United States Department of Agriculture, January 2012. http://dx.doi.org/10.32747/2012.7697109.bard.

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Citrus fruit quality standards have been determined empirically, depending on species and on the particular growing regions. In general, the TSS (total soluble solids) to total acidity (TA) ratio determines whether citrus fruit can be marketed. Soluble sugars account for most of the TSS during harvest while TA is determined almost solely by the citric acid content, which reaches levels of 1-5% by weight in many cultivated varieties. Acid and sugar homeostasis in the fruit is critical for the management of existing cultivars, the development of new cultivars, the improvement of pre- and post-harvest strategies and the control of fruit quality and disorders. The current proposal (a continuation of a previous proposal) aimed at: (1) completing the citrus fruit proteome and metabolome, and establish a citrus fruit functional database, (2) further characterization of the control of fruit acidity by studying the regulation of key steps affecting citrate metabolism, and determine the fate of citrate during acid decline stage, and (3) Studying acid and sugar homeostasis in citrus fruits by characterizing transport mechanisms across membranes. These aims were completed as the following: (1) Our initial efforts were aimed at the characterization and identification of citric acid transporters in citrus juice cells. The identification of citrate transporters at the vacuole of the citrus juice cell indicated that the steady-state citrate cytosolic concentration and the action of the cytosolic aconitase were key elements in establishing the pH homeostat in the cell that regulates the metabolic shift towards carbon usage in the fruit during the later stages of fruit development. We focused on the action of aconitase, the enzyme mediating the metabolic use of citric acid in the cells, and identified processes that control carbon fluxes in developing citrus fruits that control the fruit acid load; (2) The regulation of aconitase, catalyzing a key step in citrate metabolism, was further characterized by using two inhibitors, citramalte and oxalomalte. These compounds significantly increased citrate content and reduced the enzyme’s activity. Metabolite profiling and changes of amino-acid metabolizing enzymes in oxalomalate- treated cells suggested that the increase in citrate, caused by aconitase inhibition, induces amino acid synthesis and the GABA shunt, in accordance with the suggested fate of citrate during the acid decline stage in citrus fruit. (3) We have placed a considerable amount of time on the development of a citrus fruit proteome that will serve to identify all of the proteins in the juice cells and will also serve as an aid to the genomics efforts of the citrus research community (validating the annotation of the fruit genes and the different ESTs). Initially, we identified more than 2,500 specific fruit proteins and were able to assign a function to more than 2,100 proteins (Katz et al., 2007). We have now developed a novel Differential Quantitative LC-MS/MS Proteomics Methodology for the identification and quantitation of key biochemical pathways in fruits (Katz et al., 2010) and applied this methodology to identify determinants of key traits for fruit quality (Katz et al., 2011). We built “biosynthesis maps” that will aid in defining key pathways associated with the development of key fruit quality traits. In addition, we constructed iCitrus (http://wiki.bioinformatics.ucdavis.edu/index.php/ICitrus), a “functional database” that is essentially a web interface to a look-up table that allows users to use functional annotations in the web to identify poorly annotated citrus proteins. This resource will serve as a tool for growers and field extension specialists.

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