Piezoelectric energy harvesting device optimization by synchronous electric charge extraction
宽频压电振动俘能器的研究现状综述
宽频压电振动俘能器的研究现状综述徐振龙;单小彪;谢涛【摘要】In recent years,portable electronic devices,micro-electromechanical systems (MEMS) and wireless sensor networks have been widely used.The disadvantages of the batteries gradually become obvious.The piezoelectric vibration energy harvester can convert the ambient vibration energy to electric energy,so that the low-power microelectronic products can be wirelessly powered or self-powered.To enhance the environmental adaptability and improve the generating efficiency,the broadband piezoelectric energy harvesting turns to be a research hotspot.The principle,piezoelectric materials,and operation modes were presented firstly.The current status of the broadband piezoelectric energy harvester was reviewed.The problems in recent research work were summarized.Finally,the future research directions were proposed.The piezoelectric energy harvesting supplies a stable,safe,and enduring way to power the microelectronic products.It has a good application prospect.%随着便携式电子设备、微机电系统(MEMS)和无线传感器网络的广泛应用,化学电池供能的弊端日益显现.压电振动俘能器可以将环境中的振动能转换成电能,实现低功耗微电子产品的无线供能或能量自给.在实际应用中,为了增强俘能器的环境适应能力,提高其俘能效率,宽频压电俘能技术成为当前的研究热点.介绍了压电振动俘能器的工作原理、常用压电材料和工作模式,综述了宽频压电俘能技术的国内外研究现状,分析了当前研究中存在的问题和不足,提出了未来可能的研究方向.压电振动俘能技术为低功耗微电子产品提供了一种稳定、安全、长久的新供能方式,具有良好的应用前景.【期刊名称】《振动与冲击》【年(卷),期】2018(037)008【总页数】11页(P190-199,205)【关键词】振动俘能器;压电式;宽频【作者】徐振龙;单小彪;谢涛【作者单位】杭州电子科技大学机械工程学院,杭州310018;哈尔滨工业大学机电工程学院,哈尔滨150001;哈尔滨工业大学机电工程学院,哈尔滨150001【正文语种】中文【中图分类】TM619;TN384近几年，便携式电子设备、微机电系统(MEMS)和无线传感器网络在民用、军事、医疗和工业生产中得到了广泛应用。
piezoelectric effect 原理英文
piezoelectric effect 原理英文全文共3篇示例，供读者参考篇1The piezoelectric effect is a remarkable phenomenon in which certain materials exhibit an electric charge when subjected to mechanical stress. This effect forms the basis of many technological applications, from sensors to actuators to energy harvesting devices. Understanding the principles behind the piezoelectric effect is key to harnessing its potential in various fields.At the heart of the piezoelectric effect is the concept of symmetry breaking. In a crystal lattice, the atoms are arranged in a regular and repeating pattern. When a mechanical stress is applied to the crystal, it causes the atoms to deform slightly from their equilibrium positions. This deformation disrupts the symmetry of the crystal structure, leading to the separation of positive and negative charges within the material.The separation of charges creates an electric dipole moment in the material, resulting in the generation of an electric field. This electric field can be detected as a voltage across thematerial or used to apply a force on the crystal, causing it to deform further. This reciprocal relationship between mechanical stress and electric polarization is the essence of the piezoelectric effect.Certain materials possess intrinsic piezoelectric properties due to their crystal structure, such as quartz, Rochelle salt, and lead zirconate titanate (PZT). These materials exhibit piezoelectricity in both directions: they generate an electric charge when subjected to stress (direct piezoelectric effect) and deform in response to an applied electric field (inverse piezoelectric effect).The direct piezoelectric effect is commonly used in sensors and transducers to convert mechanical signals, such as pressure, acceleration, or vibration, into electrical signals. For example, piezoelectric sensors can be found in accelerometers for automotive airbags, ultrasound transducers for medical imaging, and acoustic pickups for musical instruments.On the other hand, the inverse piezoelectric effect is exploited in actuators and piezoelectric motors to convert electrical signals into mechanical motion. By applying a voltage to a piezoelectric crystal, it can be made to expand or contract, producing linear or angular displacement. This high-speed andprecise motion control is utilized in nanopositioning stages, inkjet printers, and fuel injectors.In recent years, the piezoelectric effect has gained attention as a means of harvesting energy from ambient vibrations and mechanical movements. Piezoelectric energy harvesters can convert wasted mechanical energy into electrical power, offering a sustainable and renewable energy source for wireless sensors, wearable devices, and structural health monitoring systems.Furthermore, advancements in piezoelectric materials and devices have enabled new applications in fields such as robotics, aerospace, and energy storage. For example, piezoelectric actuators are being used in soft robotics for delicate grippers and manipulators, while piezoelectric transformers are replacing traditional magnetic components in power electronics for higher efficiency and miniaturization.In conclusion, the piezoelectric effect is a fascinating phenomenon with diverse applications in modern technology. By understanding the underlying principles of symmetry breaking and electric polarization, researchers and engineers can continue to innovate and develop new devices that harness the potential of piezoelectric materials for a wide range of applications.篇2Piezoelectric Effect PrincipleIntroductionThe piezoelectric effect is a phenomenon in which certain materials generate an electric charge in response to applied mechanical stress. This effect was first discovered by the Curie brothers, Pierre and Jacques, in the late 19th century. Since then, piezoelectric materials have found widespread applications in various fields, including sensors, actuators, transducers, and energy harvesting devices. In this document, we will delve into the principle behind the piezoelectric effect and explore how it can be harnessed for practical applications.Piezoelectric MaterialsPiezoelectric materials are a class of crystals that exhibit the piezoelectric effect. These materials have a unique molecular structure that allows them to convert mechanical stress into electrical charge. The most common piezoelectric materials include quartz, lead zirconate titanate (PZT), and polyvinylidene fluoride (PVDF). These materials have different piezoelectric properties, such as the magnitude of the generated charge, the response time, and the frequency range of operation.Principle of Piezoelectric EffectThe piezoelectric effect arises from the asymmetry of the crystal lattice structure of piezoelectric materials. In a piezoelectric crystal, the positive and negative charges are displaced relative to each other, creating a dipole moment. When an external mechanical force is applied to the crystal, it causes the lattice to deform, which changes the distribution of the charges and induces an electric field. This electric field leads to the separation of positive and negative charges, resulting in a net electrical charge across the crystal.Direct and Inverse Piezoelectric EffectThere are two main modes of the piezoelectric effect: the direct piezoelectric effect and the inverse piezoelectric effect. In the direct piezoelectric effect, an applied mechanical stress generates an electric charge across the crystal. This effect is reversible, meaning that the crystal can also deform in response to an applied electric field. This reciprocal behavior is known as the inverse piezoelectric effect, where the crystal changes its shape when subjected to an electric field.Applications of Piezoelectric EffectThe piezoelectric effect has a wide range of applications across various industries. One of the most common applications is in sensors and transducers, where piezoelectric materials are used to convert mechanical signals into electrical signals. Piezoelectric sensors are used in pressure sensors, accelerometers, and ultrasonic transducers. In addition, piezoelectric actuators are used in precision positioning systems, MEMS devices, and inkjet printers.Energy HarvestingAnother promising application of the piezoelectric effect is in energy harvesting devices. By converting mechanical vibrations or movements into electrical energy, piezoelectric energy harvesters can power small electronic devices, such as wearable sensors, wireless sensors, and IoT devices. These devices can scavenge energy from ambient vibrations, such as footsteps, machinery vibrations, or wind movements, to generate power for low-power electronics.Future PerspectivesAs research on piezoelectric materials continues to advance, new opportunities for applications are emerging. Scientists are exploring novel piezoelectric materials and structures that offer enhanced performance, such as higher sensitivity, larger chargeoutput, and broader frequency response. In addition, the integration of piezoelectric materials with other technologies, such as flexible electronics, nanotechnology, and 3D printing, is opening up new avenues for innovative devices and systems.ConclusionIn conclusion, the piezoelectric effect is a fascinating phenomenon that has revolutionized various industries with its unique ability to convert mechanical stress into electrical charge. With its wide range of applications and potential for future advancements, piezoelectric materials are poised to play a key role in the development of next-generation technologies. By understanding the principles behind the piezoelectric effect and exploring new ways to harness this phenomenon, scientists and engineers can unlock the full potential of this remarkable material.篇3The piezoelectric effect is a fascinating phenomenon that occurs in certain materials, where an electric charge is generated when mechanical stress is applied. This effect was first discovered by Pierre Curie and Jacques Curie in 1880, and hassince been studied extensively for its various applications in technology and science.The piezoelectric effect is based on the principle of asymmetry in the crystal structure of certain materials, such as quartz, Rochelle salt, and lead zirconate titanate (PZT). When these materials are subjected to mechanical stress, the crystal lattice deforms, causing the positive and negative charges within the lattice to separate. This separation of charges creates an electric field within the material, resulting in the generation of an electric voltage.There are two types of piezoelectric materials: direct and converse. Direct piezoelectric materials generate an electric charge in response to applied mechanical stress, while converse piezoelectric materials deform in response to an applied electric field. Both types of materials are widely used in various applications, such as sensors, actuators, and transducers.One of the most common applications of the piezoelectric effect is in piezoelectric sensors, which are used to measure pressure, acceleration, and force. These sensors are highly sensitive and accurate, making them ideal for a wide range of applications, from medical devices to industrial machinery.Piezoelectric actuators are another important application of the piezoelectric effect, as they can convert electrical energy into mechanical motion. These actuators are used in a variety of devices, such as inkjet printers, precision positioning systems, and ultrasonic motors.In addition to sensors and actuators, the piezoelectric effect is also utilized in piezoelectric transducers, which are used to convert electrical signals into acoustic signals and vice versa. These transducers are commonly found in ultrasonic devices, such as medical imaging equipment and underwater sonar systems.Overall, the piezoelectric effect is a versatile and powerful phenomenon that has revolutionized the field of materials science and technology. Its applications span a wide range of industries and have led to numerous technological advancements. As researchers continue to explore and understand the underlying principles of the piezoelectric effect, we can expect to see even more innovative applications in the future.。
混合式三稳态压电能量俘获器动力性能分析
第32卷第1期2024年2月Vol.32No.1Feb.2024安徽建筑大学学报Journal of Anhui Jianzhu UniversityDOI：10.11921/j.issn.2095-8382.20240109混合式三稳态压电能量俘获器动力性能分析唐礼平1，2，胡庆南1，韩婷婷1，2（1.安徽建筑大学土木工程学院，安徽合肥230601；2.安徽省BIM工程中心，安徽合肥230601）摘要：为了提高压电能量俘获器在低强度外界激励下的俘能表现，基于三稳态压电悬臂梁能量俘获器模型，在U 形框架和基底之间以及压电悬臂梁固定端与U形框架之间分别装置一个弹性放大器，提出一种混合式三稳态压电能量俘获器（TPEH+DEM）模型。
基于Hamilton原理建立了TPEH+DEM系统的非线性力电耦合运动方程，并利用谐波平衡法分析了弹性放大器的质量和弹簧刚度、磁铁之间相对距离、负载电阻等对TPEH+DEM系统能量收集水平的影响。
结果表明：在一定的外界激励频率范围内，TPEH+DEM系统的响应输出功率存在两个峰值，合理调节弹性放大器的质量和刚度能使系统在较低的外界激励强度下进入阱间运动，产生很高的输出功率。
相比于仅带有弹性基底的传统三稳态压电能量俘获器，TPEH+DEM模型在低频外界激励下具有更好的俘能表现。
关键词：压电能量俘获器；力电耦合；弹性放大器；谐波平衡法；阱间运动中图分类号：O322文献标志码：A文章编号：1672-2337（2024）01-068-07Dynamic Performance Analysis of Hybrid Tri-stable Piezoelectric Energy HarvesterTANG Liping1，2，HU Qingnan1，HAN Tingting1，2（1.College of Civil Engineering，Anhui Jianzhu University，Hefei230601，China；2.BIM Engineering Center of Anhui Province，Hefei230601，China）Abstract：To improve the energy harvesting performance of the piezoelectric energy harvester under low external excitation level,based on the multi-stable piezoelectric cantilever energy harvester model,two elastic amplifiers were respectively installed,one was installed between the U-shaped frame and the substrate,and the other was installed between the U-shaped frame and the fixed end of the cantilever beam.Hence,a hybrid tri-stable piezoelectric energy harvester(TPEH+DEM)model was proposed.The nonlinear electro-mechanical coupling equation of the TPEH+DEM system was established by using Hamilton principle.The influences of the mass ratio and spring stiffness ratio of the two elastic amplifiers,the relative distance between the magnets,and the load resistance on the energy harvesting level of the TPEH+DEM system were analyzed.And it turned out that within a certain range of external excitation frequency, the response output power of the TPEH+DEM system had two peak value.Reasonable adjustment of the mass ratio and spring stiffness ratio of the two elastic amplifier can make the system enter inter-well motion under low external excitation intensity,and produce high output pared with the traditional multi-stable piezoelectric energy harvester with only an elastic substrate,the TPEH+DEM model has better energy harvesting performance under low frequency external excitation level.Keywords：piezoelectric energy harvester；electro-mechanical coupling；elastic amplifier；harmonic balance method；inter-well motion压电能量收集器能够利用压电效应使环境中的机械能转化成电能，进而为微电子设备供电。
LinearLTC3588~1压电能量收集电源方案
Lin ear LTC3588-1压电能量收集电源方案关键字：电源管理，能量收集器，DC/DC转换器Linear公司的LTC3588-1是压电能量收集电源，集成了低噪音全波整流和高效降压转换器，组成完整的能量收集解决方案，最适合高输岀阻抗的能量源如压电传感器•输入电压2.7V-20V,输岀电流高达100mA,可选输出电压1.8V, 2.5V, 3.3V和3.6V,可用于压电能量收集，电-机械能量收集无线HVAC传感器，轮胎压里传感器，遥控光开关，毫微瓦降压稳压器.本文介绍LTC3588-1主要特性，方框图以及多种应用电路图，包括100mA压电能量收集电源电路图，最小尺寸的1.8V低压输入压电能量收集电源电路图，电场能量和热电能量收集器电路图等.LTC3588-1: Piezoelectric Energy Harvesting Power SupplyThe LTC.3588-1 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric transducers. An ultralow quiescent current undervoltage lockout (UVLO) mode with a wide hysteresis window allows charge to accumulate on an input capacitor until the buck converter can effi ciently transfer a portion of the stored charge to the output. In regulation, the LTC3588-1 enters a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation.Four output voltages, 1.8V, 2.5V, 3.3V and 3.6V, are pin selectable with up to 100mA of continuous output current; however, the output capacitor may be sized to service a higher output current burst. An input protective shunt set at 20V enables greater energy storage for a given amount of input capacitance.LTC3588-1主要特性：950nA Input Quiescent Current (Output in Regulation - No Load)450nA Input Quiescent Current in UVLO2.7V to 20V Input Operating RangeIntegrated Low-Loss Full-Wave Bridge RectifierUp to 100mA of Output CurrentSelectable Output Voltages of 1.8V, 2.5V, 3.3V, 3.6VHigh Efficiency Integrated Hysteretic Buck DC/DCInput Protective Shunt - Up to 25mA Pull- Down at VIN > 20V Wide Input Undervoltage Lockout (UVLO) RangeAvailable in 10-Lead MSE and 3mm x3mm DFN Packages LTC3588-1 应用:Piezoelectric Energy HarvestingElectro-Mechanical Energy HarvestingWireless HVAC SensorsMobile Asset TrackingTire Pressure SensorsBattery Replacement for Industrial SensorsRemote Light SwitchesStandalone Nanopower Buck Regulator6恤10, 血IIHErUIAl FUILE 31 01 M)L} "T —6V图2.LTC3588-1 100mA 压电能量收集电源电路图图1.LTC3588-1方框图 100mA Piezoelectric Energy Harvesting Power Su 叩ly ACVAWCEO CERAMETPICS PFC-WU BUCK ：CCNrROLCSIORAGE25Y rIQpH---- -------------------- 畑 TI 丄＜ 砒 _H 刖nMi■ ] OUTPUT - ~ VOLTAGESELECTPGOOi?PGOODGWFRFJGR0ALD&APREFERENCE PZ1 PZ2v,Nsw n«&se -i如CAPPGOOO VlPiz00. Q1GRID工图 3.LTC3588-1 3.3V 压电能量收集电源电路图：给带无线发送器的微处理器和50mA 瞬态负载供电.图5.采用单个压电晶体和自动加电次序的双电源电路图PZ1VinmPGOODCAPLTG35W-1 鬧畑hiv tMHU ID9GMDCO^EENhMICROPROCESSORL.・ OpF I --------------------- ' 丄斗卉4 uS图4.最小尺寸的1.8V 低压输入压电能量收集电源电路图眺JO £*STLUSPZ2PZI PGODDDO10pF25V pdOO 序一1—MF "Rev rLTCJsea-iCAP SW图8.电场能量收集器电路图图6•带备份电池的压电能量收集器电路图图7.AC 火线供电的3.6V 降压稳压器，大输出电容支持重负载円㈣：”DANGER HIGH VOLTAGE 1150k信 DkI------------- z\l20VAC创用 1 5Qk 15CH<-T-弭9VBAHEHVPILZO SVSTEMS T22O-W-5WXtR05H40C&?7^rtFPANELS ARE PLACED G bFROM ?' x4' FLUORfSCEM LIGHT FiZTUFtESCCPPfR PAF1ELCOPPER 朋毗LP22V|kjPGOODITC358 &>1CftpSW V|H2VtMJT口DOGHCIF'A QOCP71 P7? V.|PGOODLTC3&B0-13Wv12 VOUTtnGMDPGOOD±±GU二询s图10.热电能量收集器电路图图9.5-16V 太阳能供电的2.5V 电源,其超大电容增加输出能量存储和备份电池10012I Pfi-1 THERMAL |鉅碰RATOR fflie 1-1,0-127-157I llfLLJflEKi丁阳 •ipf ■仙mi -w>5V TO 16VSOLAR PAN5LSVRAnERY[R06H4X5FTRM ： HE255 S' PER TAPACiTOR TAW ：RF1-'00300-^237—^— i OpfPGO QDP12WinPG&ODLTC358 时CAPBVJ恤0001 GND—團 - |'"4.7|jF 工PZ1PZ2 wPG-OTDLTG35S8-1CAPSW 畑VOUT ：DOD1GNDPGOOO。
压电电磁俘能器 英文
压电电磁俘能器英文Piezoelectric Electromagnetic Energy Harvester.Introduction.The field of energy harvesting has witnessedsignificant advancements in recent years, with the primary focus being on capturing ambient energy from various sources such as vibrations, light, temperature gradients, and more. Among these sources, vibrations are particularly abundant in many industrial and environmental settings, making piezoelectric electromagnetic energy harvesters a highly relevant and promising technology. Piezoelectric electromagnetic energy harvesters combine the principles of piezoelectricity and electromagnetic induction to convert mechanical vibrations into electrical energy.Working Principles of Piezoelectric Electromagnetic Energy Harvester.Piezoelectric materials, when subjected to mechanical stress or strain, generate an electrical charge due to the change in the alignment of dipoles within the material. This charge can be harnessed and used to power electronic devices. Electromagnetic energy harvesters, on the other hand, utilize the principle of electromagnetic induction to convert mechanical motion into electrical energy. They typically consist of a magnet and a coil, where therelative motion between the magnet and the coil induces a voltage across the coil.By combining these two principles, piezoelectric electromagnetic energy harvesters are able to capture and convert vibrations into electrical energy more efficiently. The vibrations cause stress or strain on the piezoelectric material, generating an electrical charge. Simultaneously, the vibrations also cause relative motion between the magnet and the coil, inducing an electrical voltage.Applications of Piezoelectric Electromagnetic Energy Harvester.Piezoelectric electromagnetic energy harvesters find applications in a wide range of fields. Here are some of the key areas where they are used:1. Structural Health Monitoring: These energy harvesters can be integrated into structures such as bridges, buildings, and aircraft to monitor their health and detect any damage or cracks. The vibrations generated by these structures can be harnessed to power the sensors used for monitoring.2. Wireless Sensor Networks: In wireless sensor networks, energy harvesters can provide a sustainable power source for sensors, enabling long-term monitoring and data collection without the need for regular battery replacements.3. Internet of Things (IoT) Devices: Piezoelectric electromagnetic energy harvesters can power IoT devices deployed in remote locations or in environments where accessing power grids is challenging.4. Wearable Devices: These energy harvesters can be used to power wearable devices such as health monitors, fitness trackers, and smartwatches. By capturing the vibrations generated by the wearer's movements, the energy harvesters can provide a continuous power source for these devices.5. Environmental Monitoring: Piezoelectric electromagnetic energy harvesters can be used in environmental monitoring applications to power sensors used to measure temperature, pressure, humidity, and other parameters.Advantages and Challenges of Piezoelectric Electromagnetic Energy Harvester.Advantages:Sustainability: Piezoelectric electromagnetic energy harvesters provide a sustainable and renewable source of energy, converting ambient vibrations into electrical energy without consuming any fuel.Maintenance-Free: These energy harvesters require minimal maintenance and have a long operational lifespan, making them suitable for long-term applications.Compact and Lightweight: Piezoelectric electromagnetic energy harvesters are typically compact and lightweight, enabling easy integration into various devices and structures.Challenges:Efficiency: The efficiency of piezoelectric electromagnetic energy harvesters can be affected by various factors such as the frequency and amplitude of vibrations, material properties, and design considerations. Optimizing these factors is crucial to enhance the overall efficiency of the energy harvester.Environmental Conditions: Environmental conditions such as temperature, humidity, and mechanical stress can affect the performance of piezoelectric electromagneticenergy harvesters. Designing energy harvesters that are robust to these environmental variations is a key challenge.Cost: While the technology of piezoelectric electromagnetic energy harvesters is constantly evolving,the cost of production and implementation can still be a limiting factor in some applications. Cost-effective manufacturing processes and materials research areessential to make these energy harvesters more accessible.Conclusion.Piezoelectric electromagnetic energy harvesters represent a promising technology for capturing and converting ambient vibrations into electrical energy. Their ability to harness energy from various sources, combinedwith their compact size and long-term reliability, makes them suitable for a wide range of applications, including structural health monitoring, wireless sensor networks, IoT devices, wearable devices, and environmental monitoring. However, challenges such as efficiency, environmental conditions, and cost still need to be addressed to fullyrealize the potential of this technology. Future research and development efforts should focus on improving the efficiency and robustness of piezoelectric electromagnetic energy harvesters while reducing their cost to make them more widely accessible and applicable.。
微弱能量收集电路技术的研究现状与发展趋势
微弱能量收集电路技术的研究现状与发展趋势荣训;陈志敏;曹广忠【摘要】随着物联网的发展和无线传感器网络的广泛使用,以电池为主的供能方式弊端日渐显露,微弱能量收集因其诸多优点而得到了极大重视.介绍了目前微弱能量收集电路技术研究的现状,对目前的微弱能量收集电路技术进行了分析,阐述了多种微弱能量的收集,介绍了目前高效率的微弱能量收集电路的设计模式.结合目前微弱能量收集电路的优缺点,展望了能量收集电路技术未来的研究趋势和方向.【期刊名称】《传感器与微系统》【年(卷),期】2015(034)009【总页数】5页(P6-10)【关键词】能量收集电路;物联网;无线传感器网络;微弱能量收集技术【作者】荣训;陈志敏;曹广忠【作者单位】深圳大学自动化研究所深圳电磁控制重点实验室,广东深圳518060;深圳大学自动化研究所深圳电磁控制重点实验室,广东深圳518060;深圳大学自动化研究所深圳电磁控制重点实验室,广东深圳518060【正文语种】中文【中图分类】TK01在过去的十多年里，处理、存储和通信技术得到了飞速发展，与之相比,电源技术进步的速度要小得多，能量密度上无明显提高[1]。
但传感器和交互节点网络方面已取得很大的研究成果，由于网络节点在数量上的增加和在尺寸上的减少，对电源的体积、寿命和能量密度要求越来越严格，传统上远程无线传感器一直依靠电池供电来测量数据并以无线方式发送数据[2]。
这种方式工作可靠，但传感器网络的可用寿命取决于电池的可用寿命[3]。
这些电池一般能持续工作3～5年时间，在每个传感器节点中都属于昂贵的组件。
在有些应用中难以更换电池，而且更换电池费用高昂。
因此，人们希望能实现传感器的自供电，将自供电系统用在传感器网络系统中，可取代电池或延长电池的使用寿命[4,5]。
与之相关的能量收集技术也得到人们越来越多的重视，最近国际上研究的热点是微弱能量收集技术[6,7]。
本文介绍了目前微弱能量收集电路技术研究的现状，对目前的微弱能量收集电路技术进行分析。
基于喷嘴-共振腔系统的压电能量收集
基于喷嘴-共振腔系统的压电能量收集邹华杰;王泽平;宋建【摘要】针对气流激振压电能量收集的机械激励问题,提出了一种基于喷嘴-共振腔系统的激振方法.应用CFD方法对压力流场进行分析;同时,结合压电效应,对输出电压进行仿真预测.结果表明,在入口压力为8KPa时,能产生峰-峰值33.6KPa以及频率1515Hz的振荡压力;压电片的振动位移峰-峰值为0.045mm,且其输出电压峰-峰值在40V左右.该方法能将环境气流转化为作用于压电材料上的周期性脉动压力载荷进而实现电能输出,从而验证了该压电能量收集方法的可行性.对于丰富压电能量收集在微功耗电子系统自供电的应用,具有重要价值和工程指导意义.【期刊名称】《科技视界》【年(卷),期】2018(000)007【总页数】3页(P31-33)【关键词】自供电;压电能量收集;气流激振;喷嘴-共振腔系统【作者】邹华杰;王泽平;宋建【作者单位】常州机电职业技术学院,江苏常州 213164;常州机电职业技术学院,江苏常州 213164;江苏中烟工业有限责任公司徐州卷烟厂,江苏徐州 221005【正文语种】中文【中图分类】TM619;TN929.5;TP212.90 引言近年来，环境能量收集受到了国内外研究者的广泛关注，它能够源源不断地将环境中各种形式的能量转化为电能，具有体积小、寿命长、能量密度高等显著优点，在无线传感网络、自供电系统等方面具有潜在的应用前景。
如何将环境气流动能转化为作用于压电材料上的周期性脉动压力载荷，实现机械激励，是一个关键技术问题。
国内外很多学者对这种基于气流激振的压电能量获取装置的原理模型和实验进行了研究。
Allen and Smits将压电薄膜放置在卡门涡街的后面获得来自流体运动的能量[1]。
Li Shuguang等研究了通过仿生压电叶子结构利用绕流中尾流的脉动压力载荷来获取风能[2]。
R Hernandez,S Jung和K I Matveev研究了利用气流通过开孔挡板后引起空腔内声振荡的装置，并用压电换能器实现了声能到电能的转换[3]。
The Properties of Piezoelectric Materials
The Properties of PiezoelectricMaterialsPiezoelectricity is a unique property that some materials possess, allowing them to convert mechanical energy into electrical energy and vice versa. This phenomenon has been known for over a century and has become increasingly important in the development of new technologies, particularly in the fields of sensors, actuators, and acoustic transducers. In this article, we will explore the properties of piezoelectric materials, their applications, and their recent developments.1. The Basics of PiezoelectricityPiezoelectricity is derived from the Greek word "piezo" which means to press or squeeze. The piezoelectric effect is the ability of some materials to generate an electrical charge when subjected to mechanical stress, and conversely, to produce a mechanical deformation when exposed to an electrical field. This effect is based on the alignment of electric charges within the crystal lattice of the material, which creates an electrical dipole moment.Piezoelectric materials can be divided into two types: natural and synthetic. Natural piezoelectric materials include quartz, tourmaline, and topaz, while synthetic piezoelectric materials include ceramics, polymers, and composites. These materials exhibit different levels of piezoelectric activity, which is quantified by the piezoelectric coefficient, a measure of the electrical charge produced per unit of mechanical stress.2. Applications of Piezoelectric MaterialsPiezoelectric materials have a wide range of applications due to their unique properties. One of their most common uses is in sensors, which can detect changes in pressure, acceleration, and force. These sensors are used in a variety of industries, from automotive manufacturing to medical devices.Piezoelectric materials are also used in actuators, which convert electrical energy into mechanical motion. They are commonly found in speakers, where they produce sound waves by vibrating a diaphragm. They are also used in robotics, where they provide precise control of movement.Another application of piezoelectric materials is in acoustic transducers, which convert electrical signals into sound waves and vice versa. These transducers are used in ultrasound machines, sonar imaging equipment, and musical instruments like guitars and violins.3. Recent Developments in Piezoelectric MaterialsIn recent years, there have been significant advancements in the development of piezoelectric materials, particularly in the field of energy harvesting. Energy harvesting refers to the conversion of ambient energy, such as vibrations or temperature differentials, into electrical energy that can be used to power electronic devices.One promising application of energy harvesting is in the development of self-powered sensors for the Internet of Things (IoT). These sensors could potentially eliminate the need for batteries or external power sources, reducing the cost and environmental impact of IoT devices.Researchers are also exploring the use of piezoelectric materials in flexible electronics, where they could be used to power wearable devices like smartwatches and fitness trackers. These materials could also be used in biomedical applications, such as implantable sensors or drug delivery systems.In addition, there have been recent developments in the use of piezoelectric materials in energy storage devices like batteries and capacitors. These materials have the potential to improve the performance and energy density of these devices, which could have significant implications for the development of renewable energy technologies.4. ConclusionPiezoelectric materials are a fascinating class of materials that have a wide range of applications, from sensors to acoustic transducers. Their unique properties have made them an important area of research and development, particularly in the fields of energy harvesting and flexible electronics. As technology continues to advance, it is likely that we will see even more innovative applications of piezoelectric materials.。
基于SICE_自供电式压电-_电磁俘能电路设计
0 引言无线传感网络（Wireless Sensor Network，WSN）的兴起使人们的生活面向更高效、更智能的方向发展。
传统无线传感网络的节点采用电池供电，但是电池寿命有限，导致无线传感网络节点的能量供应成为制约其发展的瓶颈[1]。
周围环境中存在太阳能、风能、热能、振动能等可再生能量[2]。
振动能是环境中广泛存在的能量之一，因其具有能量密度相对较高且易被俘获的优点而备受青睐[3]。
振动能量的俘获技术主要分为压电式、电磁式和静电式3类。
压电式俘能装置易于制作且机电耦合系数大，成为当前的研究热点[4]。
目前，关于单一能量转换原理的俘能装置相关研究已经比较丰富，为更进一步提升俘能技术，集成多种能量转换原理的压电-电磁复合俘能装置具有提高振动能量转换效率、提升结构可扩展性、丰富技术实现方式等优点而备受关注。
由于俘能器转换的电能无法直接给微小型电子产品供电，故需要设计能量管理电路将交变的俘能输出电压经整流和滤波转换为稳定的直流电压。
为了提升系统的转换效率，设计合理的能量管理电路具有重大的研究意义。
Ottman G K等[5]提出了标准能量管理电路基于SICE自供电式压电-电磁俘能电路设计*梅 杰 陈万杰 李立杰 陈定方 倪祥禄武汉理工大学交通与物流工程 武汉 430063摘 要：对SICE接口电路的回收功率进行理论分析和计算，并利用Multisim对SHE、SECE、P-SSHI、S-SSHI 和SICE 5种接口电路进行仿真和比较。
通过对5种电路的分析，文中提出了一种基于同步翻转电荷提取的压电-电磁俘能电路（Self-Powered SICE）。
所提出的电路由压电俘能部分、电磁供能部分、运算放大器、整流滤波电路、开关控制电路和同步翻转电荷提取电路组成。
电磁产生的能量为开关控制电路供能，避免了引入额外的电源对开关进行控制以达到自供能。
Multisim仿真结果表明本文设计的SP-SICE电路的回收功率是SHE电路的3.7倍，相比SICE电路的回收功率有所下降，但实现了自供电和负载的自适应。
PIEZOELECTRIC ENERGY HARVESTING
专利名称：PIEZOELECTRIC ENERGY HARVESTING 发明人：ZAWADA, Tomasz,XU, Ruichao,GUIZZETTI, Michele,BORREGAARD, LouiseMøller,RINGGAARD, Erling申请号：IB2014/002654申请日：20140915公开号：WO2015/036869A2公开日：20150319专利内容由知识产权出版社提供专利附图：摘要：An energy harvesting unit comprising: a package formed by a base and a lid, the package including a sealed interior volume and an exterior; a ledge formed in the sealedinterior volume with a first cavity above and a second cavity below the ledge; a plurality of inner electrical contacts formed on the ledge; a plurality of outer electrical contacts formed on the exterior of the package wherein the outer electrical contacts are electrically connected to the inner electrical contacts through the package; and, a piezoelectric member in electrical communication with the inner electrical contacts and coupled to the ledge on a first side of the package and spanning across the cavity and coupled to the ledge on an opposite side of the package.申请人：MEGGITT A/S地址：DK国籍：DK代理人：RØRDAM, Troels, Peter更多信息请下载全文后查看。
Materials Science for Energy Harvesting
Materials Science for EnergyHarvesting能源收集材料科学能源对于我们的日常生活而言是至关重要的，然而传统能源汇集和使用方式会破坏环境并导致资源匮乏。
因此，人们需要探索新的能源收集方式，这就需要一个新的科学领域——能源材料科学。
能源收集材料科学（Materials Science for Energy Harvesting）是一门专注于开发优质、高性能、低成本能源收集材料的学问。
这种材料大都基于能量转换和转移的原理，能够将周围的能源转换成我们所需要的能源，无须外来的能源支持。
以下是几种能源收集材料科学中的重要材料及其原理、应用：1.热电材料（Thermoelectric Materials）热电材料可以将周围温度差异转换成电能，应用于汽车排气管、航空发动机冷凝水管和微型发电机等。
其原理是热电材料会通过热电效应将热能变为电能。
该材料由p型半导体和n型半导体组成。
当n型半导体和p型半导体连接后，由于热电效应，在两个半导体连接处形成一个温度梯度。
这时，两者之间就会产生一个热电势差，从而引起电子的迁移。
最终形成一个电流，进而将热能转换成了电能。
2.光伏材料（Photovoltaic Materials）光伏材料主要用于太阳能电池板上。
当光子穿过该材料时，会将其中的电子击出，进而构成电流。
光伏材料通常有硅晶体、有机聚合物和过渡金属化合物等多种不同种类。
其中，硅晶体的应用范围最为广泛，因为其转化效率最高。
3.压电材料（Piezoelectric Materials）压电材料能将机械振动能量转换成电流，实现机械能的收集与转换。
压电材料是由非对称电荷组成，当材料被压缩时，会引起其中的电荷移动，从而导致电场的变化。
压电材料有许多不同的引用场景，例如机械振动下的嵌入式开关、无线传感器的电源和生物医学领域的可植入电池等。
4.热涨弛材料（Thermoelastic Materials）热涨弛材料是一种能够收集温度变化能量的材料。
机电耦合系数的英文缩写英语
机电耦合系数的英文缩写英语Electromechanical Coupling Coefficient: A Comprehensive Overview.Introduction.The electromechanical coupling coefficient, denoted by the symbol k, quantifies the interaction between electrical and mechanical energy in a piezoelectric material. It plays a pivotal role in determining the efficiency of piezoelectric devices, which are widely used in various applications such as sensors, actuators, and energy harvesting systems. In this article, we will explore the concept of electromechanical coupling coefficient, its significance, and the different methods used to measure it.Definition and Concept.The electromechanical coupling coefficient represents the ratio of the electrical energy converted to mechanicalenergy (or vice versa) to the total energy applied to the piezoelectric material. It is a dimensionless quantity that ranges from 0 to 1, where 0 indicates no coupling and 1 indicates perfect coupling.Mathematically, the electromechanical coupling coefficient is defined as:k = sqrt(E / (E + M))。
【国家自然科学基金】_压电俘能器_基金支持热词逐年推荐_【万方软件创新助手】_20140803
科研热词 俘能器 能量自供给 能量回收 能量俘获 流固耦合 机械振动 无铅 无线传感器网络 振动能量 振动 悬臂梁 压电陶瓷 压电转换 压电器件 压电-液压 压电 力电分析 vibration piezoelectric device energy harvesting cantilever beam
推荐指数 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1
2011年 序号 1 2 3 4 5科研热词 谐振器能量收集 悬臂梁 多模态 压电
推荐指数 1 1 1 1 1
2012年 序号 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
2009年 序号 1 2 3 4 5 6 7
科研热词 鼓形俘能器 自供能 耦合场 有限元分析 压电俘能器 压电 俘能效率
推荐指数 1 1 1 1 1 1 1
2010年 序号 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
科研热词 悬臂梁 压电俘能器 俘能器 能量储存 环境振源 无线供能 微电子器件 应变节点 工作频率带 变频 压电纤维复合材料 压电双晶片 力/电耦合 分段电极 交叉指电极
推荐指数 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
2013年 序号 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
2013年 科研热词 压电俘能器 路面振动 能量俘获 有限元法 风力 阵列式cymbal俘能器 阵列式 钹型阵列 谐振 能量回收 数学建模 发电 参数优化 压电效应 压电振子 压电俘能单元 卡门涡街 俘能器 俘能 串联 d15模式 推荐指数 3 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
PZT压电材料d31模式串联结构悬臂梁俘能性能研究
学校代码***** 学号************分类号TN384 密级公开硕士学位论文PZT压电材料d31模式串联结构悬臂梁俘能性能研究学位申请人梅靖羚指导教师郑学军教授学院名称材料与光电物理学院学科专业材料科学与工程研究方向功能薄膜材料与器件二零一四年六月七日Investigation on PZT piezoelectric material d31 model series cantilever energy harvestingperformanceCandidate Jingling MeiSupervisor Professor Xuejun ZhengCollege Faculty of Materials, Optoelectronics and PhysicsProgram Materials Science and EngineeringSpecialization Functional Thin Film and DevicesDegree Engineering MasterUniversity Xiangtan UniversityDate2014-6-7湘潭大学学位论文原创性声明本人郑重声明：所呈交的论文是本人在导师的指导下独立进行研究所取得的研究成果。
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对本文的研究做出重要贡献的个人和集体，均已在文中以明确方式标明。
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压电能量采集
There are various sources in environment such as mechanical vibrations, magnetic fields, thermal gradients, and light, which have been used to generate electricity through combination with available materials, including piezoelectric, magnetoelectric, thermoelectric, and semiconductors. All these methods have inherent advantages and disadvantages. When the mechanical vibrations are a dominant source of energy and solar light is not available, it has been found that piezoelectric energy harvesting is suitable.
纳米技术英语演讲稿a glimpse of the nano-word还有对应的word文档呢
Atomic force microscopy (AFM) or scanning force microscopy (SFM) is a very high-resolution type of scanning probe microscopy resolution:分辨率probe:探针
A scanning electron microscope (SEM) is a type of electron microscope that images a sample by scanning it with a beam of electrons in a raster pattern raster:光栅
nanowire:纳米线 nanogenerator:纳米发电机 nanorobot：纳米机器人
A nanometer is a unit of spatial measurement ,it is commonly used in nanotechnology,the building of extremely small machines spatial:空间的
Nanogenerator is an energy harvesting device converting the external kinetic energy into an electrical energy based on the energy conversion by nano-structured piezoelectric material piezoelectric:压电的 kinetic:运动的
A glimpse of the nano-word
nano-word:纳米世界
School of electronic information engineering
逆压电效应 英语
逆压电效应英语Piezoelectric Effect: An OverviewPiezoelectric effect, a phenomenon in which certain materials generate electric charge in response to applied mechanical stress, has gained significant attention in the field of physics and engineering. This effect, which has both practical and theoretical implications, finds its origin in the inverse piezoelectric effect. This article aims to provide a comprehensive understanding of the inverse piezoelectric effect, its significance, applications, and future prospects.1. IntroductionThe inverse piezoelectric effect, also known as the piezoelectric inverse effect or the converse piezoelectric effect, refers to the ability of certain materials to undergo mechanical deformation in response to an applied electric field. This phenomenon was discovered by Pierre Curie and Jacques Curie in 1880, and it revolutionized the field of materials science.2. Understanding the Inverse Piezoelectric EffectThe inverse piezoelectric effect can be explained by considering the crystal structure of piezoelectric materials such as quartz, tourmaline, and ceramics. These materials possess a unique arrangement of positive and negative charges, resulting in an electric dipole moment within the crystal lattice. When an electric field is applied, the electric dipole moments shift, causing the material to deform. This deformation can be harnessed for various applications.3. Significance of the Inverse Piezoelectric EffectThe inverse piezoelectric effect has significant importance in various fields. One of the key applications is in the production of ultrasound waves. Ultrasonic transducers utilize the inverse piezoelectric effect to convert electrical energy into mechanical vibrations, creating ultrasonic waves for medical imaging, industrial cleaning, and non-destructive testing.4. Applications in Sensors and ActuatorsThe inverse piezoelectric effect plays a crucial role in sensors and actuators. Sensors, such as pressure sensors, accelerometers, and force sensors, utilize the deformation caused by the inverse piezoelectric effect to detect and measure various physical quantities. Actuators, on the other hand, convert electrical energy into mechanical motion, enabling precise control in devices such as inkjet printers, robotic arms, and microelectromechanical systems (MEMS).5. Piezoelectric Energy HarvestingThe inverse piezoelectric effect has also been explored for energy harvesting purposes. Piezoelectric materials can convert mechanical energy from vibrations, movements, or even ambient noise into electrical energy, which can be used to power small electronic devices and wireless sensors. This presents an attractive approach for achieving sustainable and self-powered systems.6. Recent Advances and Future ProspectsIn recent years, researchers have been exploring novel materials and techniques to further enhance the efficiency and versatility of the inversepiezoelectric effect. The development of flexible and wearable electronics has prompted the investigation of piezoelectric polymers and nanogenerators. Furthermore, advancements in nanotechnology have opened new avenuesfor enhancing the potential of the inverse piezoelectric effect in various applications.ConclusionThe inverse piezoelectric effect, with its ability to convert electrical energy into mechanical motion, has transformed numerous fields, ranging from medical imaging to energy harvesting. Understanding and harnessing this effect has proven crucial for the development of advanced sensors, actuators, and energy conversion systems. As research in materials science continues to evolve, it is expected that the potential of the inverse piezoelectric effect will be further exploited, enabling diverse technological advancements in the future.。
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of this, the design of vibration-powered electronic devices is made possible by the recent development of ultralow-power integrated circuits, able for instance, to feed sensors, to carry out fast signal processing, and to radio-transmit data (Elvin et al., 2001; Ayers et al., 2003; Roundy et al., 2003a, b; Amirtharajah and Chandrakasan, 2004).
Various techniques for the construction of such piezoelectric microgenerators have been investigated. Mechanical parts constitute an important aspect in design, but previous studies have shown that electrical energy conditioning system has also a determinant effect on the energy conversion effectiveness (Ottman et al., 2002, 2003).
Vibrations take place in most of the structures, but their potential energy often remains very low. In spite
*Author to whom correspondence should be addressed. E-mail: elie.lefeuvre@insa-lyon.fr
ELIE LEFEUVRE,* ADRIEN BADEL, CLAUDE RICHARD AND DANIEL GUYOMAR
Laboratoire de Ge´nie Electrique et Ferroe´lectricite´, INSA de Lyon, 8 rue de la Physique, 69621 Villeurbanne Cedex, France
Key Words: energy harvesting, self-powered, renewable energy, piezoelectric, vibration.
INTRODUCTION
OVER the years, there has been a growing interest in stand-alone systems in numerous application fields, such as embedded sensors in buildings, medical implants, and other remote wireless sensing nodes. In many applications, the problem posed by these devices is how to supply the required power. Indeed, in some applications the system is completely embedded in the host structure and no physical connection is possible with the outside world. In this case, the conventional solution is to use electrochemical batteries. However, the use of batteries involves drawbacks, such as a finite available amount of energy and a limited lifetime. Moreover, certain applications do not tolerate the chemicals they contain and the possibility of batteries dying without warning may cause serious problems in the case of security monitoring.
>> Version of Record - Sep 29, 2005 What is This?
Downloaded from at Shanghai Jiaotong University on November 7, 2011
Piezoelectric Energy Harvesting Device Optimization by Synchronous Electric Charge Extraction
The aim of this article is to present a new power flow optimization principle based on the extraction of the electric charge produced by a piezoelectric element, synchronized with the mechanical vibration. First, a simple electromechanical model to analyze the global behavior of the system is proposed. The harvested power is theoretically evaluated using an optimization principle that can be assimilated to a linear load impedance adaptation (Ottman et al., 2002, 2003). The power flow is then theoretically evaluated using the so-called ‘synchronous electric charge extraction’ principle. A comparison between both the optimization approaches shows the interest of the new principle in terms of power gain and reduction of the piezoelectric material quantity. An electronic circuit designed to perform the synchronous electric charge extraction and its control principle are presented. Finally, the theoretical predictions are compared with the experimental results.
Journal of Intelligent Material Systems and Structures
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Piezoelectric Energy Harvesting Device Optimization by Synchronous Electric Charge Extraction Elie Lefeuvre, Adrien Badel, Claude Richard and Daniel Guyomar Journal of Intelligent Material Systems and Structures 2005 16: 865 DOI: 10.1177/1045389X05056859 The online version of this article can be found at: /content/16/10/865 Published by:
An alternative solution to build ‘perpetually powered’ systems is to include a microgenerator that converts available ambient energy into electrical energy. Some possible ambient energy sources are, for instance, thermal energy, light energy, or mechanical energy. The focus here is on the transformation of mechanical vibrations into electrical energy using piezoelectric materials.
ABSTRACT: This article presents a nonlinear approach to optimize the power flow of vibration-based piezoelectric energy-harvesting devices. This self-adaptive principle is based on a particular synchronization between extraction of the electric charge produced by the piezoelectric element and the system vibrations, which maximizes the mechanical to electrical energy conversion. An analytical expression of the optimal power flow is derived from a simple electromechanical model. An electronic circuit designed to perform the synchronous charge extraction is proposed. Theoretical predictions confirmed by experimental results show that the new principle increases the harvested power by 400% as compared with a quasilinear impedance adaptation optimization method.