Rotational piezoelectric energy harvester for wearable devices

Hanif, Noor Hazrin Hany Mohamad; Mohaideen, Ahmad Jazlan; Azam, Huda; Rohaimi, Mas Ehsan

doi:10.1080/23311916.2018.1430497

Cited by 16 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in this study, Mohamad Hanif et al [49] was utilised only the mass concept for excitation. They have designed a prototype consists of PZT cantilever, a rotor with a pole on it for PZT plucking, and aluminium proof mass, as in Figure 8a.…”

Section: Comparison Of Different Designs and Excitation Elementsmentioning

confidence: 99%

“…These revealed that using the same excitation elements with the right better design gives a better result; however, achieving good power at very low frequency is also important especially in human motion applications where the frequency is low and irregular. Regarding the design of the prototype, Mohamad Hanif et al [49] and Pillatsch et al [47] both have the best simple design with the best output power. Mohamad Hanif et al [49] used a straightforward design with only mass for excitation and harvest a good output power in less frequency compared to Pillatsch et al [47] which used magnetic force with mass for excitation.…”

Section: The Influence Of Excitation Elements and Design On Performance (Challenges And Issues)mentioning

confidence: 99%

“…Various types of rotational power sources have been used in the past few years for piezoelectric energy harvesting, such as rotational machines [9][10][11][12][13][14][15][16][17][18], vehicle tire [19][20][21][22][23], human motion [24][25][26][27][28], and even wind [29][30][31][32][33][34][35][36] and fluids [31,32,[37][38][39][40][41]. They have been applied in various applications, such as tire pressure monitoring system TPMS [42][43][44], WSNs in any rotary machine [11,45,46], wearable device and medical implants [47][48][49][50][51], and others.…”

Section: Introductionmentioning

confidence: 99%

“…This plucking could be done using different excitation elements. Researchers have used various excitation elements in RPZTEH such as magnetic [52][53][54], mass weight [44,49], gravitational force [55][56][57] centrifugal force [58,59], and gears teeth force [60,61], or a compilation of these elements [42,62,63]. They have utilised these elements for frequency up-conversion of rotational frequency, which is considered lower in general than the piezoelectric resonant frequency [9,62,64], or widen the broadband range [20,65,66].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Rotational Piezoelectric Energy Harvesting: A Comprehensive Review on Excitation Elements, Designs, and Performances

et al. 2021

View full text Add to dashboard Cite

Rotational Piezoelectric Energy Harvesting (RPZTEH) is widely used due to mechanical rotational input power availability in industrial and natural environments. This paper reviews the recent studies and research in RPZTEH based on its excitation elements and design and their influence on performance. It presents different groups for comparison according to their mechanical inputs and applications, such as fluid (air or water) movement, human motion, rotational vehicle tires, and other rotational operational principal including gears. The work emphasises the discussion of different types of excitations elements, such as mass weight, magnetic force, gravity force, centrifugal force, gears teeth, and impact force, to show their effect on enhancing output power. It revealed that a small compact design with the use of magnetic, gravity, and centrifugal forces as excitation elements and a fixed piezoelectric to avoid a slip ring had a good influence on output power optimisation. One of the interesting designs that future works should focus on is using gear for frequency up-conversion to enhance output power density and keep the design simple and compact.

show abstract

Section: Comparison Of Different Designs and Excitation Elementsmentioning

confidence: 99%

Section: The Influence Of Excitation Elements and Design On Performance (Challenges And Issues)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Rotational Piezoelectric Energy Harvesting: A Comprehensive Review on Excitation Elements, Designs, and Performances

et al. 2021

View full text Add to dashboard Cite

show abstract

“…One of the renewable and sustainable energies which is potential to be harvested by end users is from harvesting vibration energy [1][2][3]. Currently, most vibration-based energy harvesting is to convert mechanical energy from the ambient to electrical energy [4].…”

Section: Introductionmentioning

confidence: 99%

A Novel Non-Intrusive Vibration Energy Harvesting Method for Air Conditioning Compressor Unit

et al. 2021

View full text Add to dashboard Cite

The purpose of harvesting vibration energy is to obtain clean and sustainable energy by converting vibration energy from ambient sources into a voltage output. In this work, a piezoelectric sensor, PZT-5H is attached to a 3D printed and custom-made mounting to be placed at an air conditioning condenser unit, to harvest vibration energy. The configuration of the harvester is non-intrusive, in which the harvester did not intrude into compressor unit operation. Temperature (20 °C, 22 °C, and 24 °C) and air volume flow rates (3 levels of air volume flow rate at 245 L/second, 274 L/second, and 297 L/second) were taken into consideration in this investigation. An accelerometer was first used to investigate the optimum vibration frequency in Hertz, and six locations were identified. Next, the piezoelectric sensor was mounted at these six locations, and the output root-mean-square (RMS) voltage from the piezoelectric sensor was obtained. The analysis of variance (ANOVA) indicated that temperature and air volume flow rates factors were significant. It was found that the location identified with the highest amount of vibration at 830.2 Hz from accelerometer measurement, was also the highest amount of RMS voltage, at 510.82 mV, harvested by the piezoelectric, from the temperature of 20 °C and air volume flow rates at high level (air flow volume flow rate at 297 L/second). From this work, it is feasible to utilize this novel method of harvesting waste vibration energy from the air conditioning compressor unit.

show abstract