Harnessing low frequency-based energy using a K0.5Na0.5NbO3 (KNN) pigmented piezoelectric paint system

2017 ◽  
Vol 5 (22) ◽  
pp. 5501-5508 ◽  
Author(s):  
Yuvasree Purusothaman ◽  
Nagamalleswara Rao Alluri ◽  
Arunkumar Chandrasekhar ◽  
Sang-Jae Kim
Keyword(s):  
Low Frequency ◽  
Paint System ◽  
Lead Free ◽  
Vibration Energy ◽  
Low Frequency Vibration ◽  
System P ◽  
Highly Sensitive

A highly sensitive lead-free piezoelectric paint system for harvesting low-frequency vibration energy (<10 Hz) was developed.

A spring-assisted hybrid triboelectric–electromagnetic nanogenerator for harvesting low-frequency vibration energy and creating a self-powered security system

Nanoscale ◽  
2018 ◽  
Vol 10 (30) ◽  
pp. 14747-14754 ◽  
Author(s):  
Weichao Wang ◽  
Jiancheng Xu ◽  
Haiwu Zheng ◽  
Fangqi Chen ◽  
Kory Jenkins ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Low Frequency ◽  
Safety System ◽  
Security System ◽  
Vibration Energy ◽  
Low Frequency Vibration ◽  
System P ◽  
Hybrid Nanogenerator ◽  
Self Powered

A novel spring-assisted hybrid nanogenerator (HG) was developed for harvesting low-frequency vibration energy, which enabled us to develop a self-powered safety system and to power LEDs, and drive some electronic devices.

scholarly journals Enhanced low-frequency vibration energy harvesting with inertial amplifiers

2021 ◽  
pp. 1045389X2110322
Author(s):  
Sondipon Adhikari ◽  
Arnab Banerjee
Keyword(s):  
Low Frequency ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Micro Scale ◽  
Energy Harvesters ◽  
Low Frequency Vibration ◽  
Different Types ◽  
Mechanical Approach ◽  
Ambient Excitation ◽  
Piezoelectric Vibration

Piezoelectric vibration energy harvesters have demonstrated the potential for sustainable energy generation from diverse ambient sources in the context of low-powered micro-scale systems. However, challenges remain concerning harvesting more power from low-frequency input excitations and broadband random excitations. To address this, here we propose a purely mechanical approach by employing inertial amplifiers with cantilever piezoelectric vibration energy harvesters. The proposed mechanism can achieve inertial amplification amounting to orders of magnitude under certain conditions. Harmonic, as well as broadband random excitations, are considered. Two types of harvesting circuits, namely, without and with an inductor, have been employed. We explicitly demonstrate how different parameters describing the inertial amplifiers should be optimally tuned to maximise harvested power under different types of excitations and circuit configurations. It is possible to harvest five times more power at a 50% lower frequency when the ambient excitation is harmonic. Under random broadband ambient excitations, it is possible to harvest 10 times more power with optimally selected parameters.

Highly Sensitive Supermode Interferometer for Low Frequency Vibration Monitoring

2021 ◽  
Author(s):  
Josu Amorebieta ◽  
Angel Ortega-Gomez ◽  
Gaizka Durana ◽  
Enrique Antonio-Lopez ◽  
Axel Schülzgen ◽  
...  
Keyword(s):  
Low Frequency ◽  
Vibration Monitoring ◽  
Low Frequency Vibration ◽  
Highly Sensitive

Development of a tunable low-frequency vibration energy harvester and its application to a self-contained wireless fatigue crack detection sensor

2018 ◽  
Vol 18 (3) ◽  
pp. 920-933 ◽  
Author(s):  
Suyoung Yang ◽  
Sung-Youb Jung ◽  
Kiyoung Kim ◽  
Peipei Liu ◽  
Sangmin Lee ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Energy Harvesting ◽  
Crack Detection ◽  
Energy Harvester ◽  
Low Frequency ◽  
Vibration Energy ◽  
Low Frequency Vibration ◽  
Resonance Frequencies ◽  
Energy Harvesting System ◽  
Fatigue Crack Detection

In this study, a tunable electromagnetic energy harvesting system, consisting of an energy harvester and energy harvesting circuits, is developed for harnessing energy from low-frequency vibration (below 10 Hz) of a bridge, and the harvesting system is integrated with a wireless fatigue crack detection sensor. The uniqueness of the proposed energy harvesting system includes that (1) the resonance frequencies of the proposed energy harvester can be readily tuned to the resonance frequencies of a host structure, (2) an improved energy harvesting efficiency compared to other electromagnetic energy harvesters is achieved in low-frequency and vibration, and (3) high-efficiency energy harvesting circuits for rectification are developed. Furthermore, the developed energy harvesting system is integrated with an on-site wireless sensor deployed on Yeongjong Grand Bridge in South Korea for online fatigue crack detection. To the best knowledge of the authors, this is the very first study where a series of low-frequency vibration energy harvesting, rectification, and battery charging processes are demonstrated under a real field condition. The field test conducted on Yeongjong Grand Bridge, where fatigue cracks have become of a great concern, shows that the proposed energy harvester can generate a peak voltage of 2.27 V and a root mean square voltage of 0.21 V from 0.18-m/s2 root mean square acceleration at 3.05 Hz. It is estimated the proposed energy harvesting system can harness around 67.90 J for 3 weeks and an average power of 37.42 µW. The battery life of the wireless sensor is expected to extend from 1.5 to 2.2 years. The proposed energy harvesting circuits, composed of the AC–DC and boost-up converters, exhibit up to 50% battery charging efficiency when the voltage generated by the proposed energy harvester is 200 mV or higher. The proposed boost-up converter has a 100 times wider input power range than a conventional boost-up converter with a similar efficiency.

A piezoelectric spring pendulum oscillator used for multi-directional and ultra-low frequency vibration energy harvesting

2018 ◽  
Vol 231 ◽  
pp. 600-614 ◽  
Author(s):  
Yipeng Wu ◽  
Jinhao Qiu ◽  
Shengpeng Zhou ◽  
Hongli Ji ◽  
Yang Chen ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Low Frequency ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Low Frequency Vibration
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