Magnetic flux density analysis of magnetic spring in energy harvester by Hall-Effect sensors and 2D magnetostatic FE model

Bijak, Joanna; Sciuto, Grazia Lo; Kowalik, Zygmunt; Lasek, Paweł; Szczygieł, Marcin; Trawiński, T.

doi:10.1016/j.jmmm.2023.170796

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…Until now, SWIPT technology in HD networks has received extensive attention in the industry [5][6][7][8][9][10][11][12][13][14]. For instance, the cooperative SWIPT was proposed in [5], in which the near non-orthogonal multiple access (NOMA) users close to the source node are assumed to act as the energy harvesting HD relays for assisting remote users' data transmissions.…”

Section: Related Workmentioning

confidence: 99%

“…In [12], Wang W. et al exploit a nonlinear energy harvesting model to furnish SWIPT for NOMA users using unmanned aerial vehicles and ensure secure transmission for received users through controlled artificial interference. Moreover, the methods in [13,14] both make energy harvesting achievable. However, to the best of the authors' knowledge, SWIPT in FD networks has not been substantially studied in prior research.…”

Section: Related Workmentioning

confidence: 99%

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Ergodic Rate Analysis for Full-Duplex and Half-Duplex Networks with Energy Harvesting

Zhong,

Chen,

Zhang

2024

Electronics

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Considering energy harvesting, the ergodic data rates for both in band full-duplex (FD) and half-duplex (HD) wireless communications were studied. The analytic expressions of downlink and uplink ergodic rates for the proposed system were first derived with independent and identically distributed (i.i.d.) Rayleigh fading link. It was revealed that the uplink data rate can be improved by decreasing the downlink data rate. Furthermore, the uplink/downlink data rates are also shown to be influenced by some significance parameters, for example, the power split parameter and signal-to-noise ratio (SNR) (i.e., PS/σ2) of each link. Additionally, unlike the HD, the proposed FD node is capable of harvesting energy during the communication process; however, this is at the cost of performance loss induced by the residual self-interference (RSI), which is caused by the essence of simultaneous uplink and downlink transmissions in a single frequency band.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Ergodic Rate Analysis for Full-Duplex and Half-Duplex Networks with Energy Harvesting

Zhong,

Chen,

Zhang

2024

Electronics

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“…The traditional magnetic field measurement method is usually based on non-optical detection means. The more commonly used magnetic field sensors are Hall sensors, 4 , 5 magnetoelectric sensors, 6 and magnetoresistive sensors 7 . Compared to traditional magnetic field sensors, optical fiber magnetic field sensors have outstanding advantages in magnetic field sensing.…”

Section: Introductionmentioning

confidence: 99%

Temperature self-compensating photonic crystal fiber grating magnetic field sensor

Sun,

Yang,

Hao

et al. 2024

Opt. Eng.

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Magnetic fluid is a good magneto-optical material. In this paper, a kind of side-etch photonic crystal long-period grating based on magnetic fluid filling is proposed. Simultaneous detection of magnetic field strength and temperature through integrated surface plasma resonance (SPR) and long period grating (LPG) sensing. The refractive index of magnetic fluid changes with the influence of magnetic field intensity and temperature. Based on the above sensing mechanism, the test results show that the magnetic field intensity sensitivity of the LPG sensor is −35.91 pm∕GS, and the temperature sensitivity is 51.4 pm∕°C. The temperature sensitivity of the SPR sensor is −568 pm∕°C, which accurately compensates for temperature crosstalk. The calculated error rate is E ðΔBÞ ¼ 0.124%; E ðΔT Þ ¼ 0.308%. The sensor structure provides a good application prospect for precise magnetic field intensity measurements.

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A Triple Piezoelectric‐Electromagnetic‐Piezoelectric Energy Harvester with Cam Contact Driven and Cylindrical Magnet Noncontact Driven

Li,

Liu,

Pei

et al. 2024

Energy Tech

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For the traditional energy harvester converting other energy forms into electrical power, lots of energy is wasted as heat or other forms due to the single energy transduction mechanism. To further improve the energy conversion efficiency, the study presented here provides an idea and realization of a triple piezoelectric‐electromagnetic‐piezoelectric energy harvester with cam contact driven and cylindrical magnet noncontact driven for improving the conversion efficiency of energy. The proposed energy harvester is composed of a rectangular piezoelectric energy harvester (RPEH), a circular piezoelectric energy harvester (CPEH), and an electromagnetic energy harvester (EMEH) for harvesting mechanical energy. The design concepts and working principle are evaluated and explained with the structural and Simulink models. The output performance is experimentally tested under different rotating speeds, cam geometries, lengths of magnets, and load resistances. The results reveal that the output power can achieve a milliwatt level (1.34 mW) with 3 cam protrusions, 15 mm magnet length, and 200 r min−1 rotating speed. Finally, we successfully demonstrate the harvester has great potential in powering low‐power electronics such as light‐emitting diodes and digital clocks.

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Magnetic flux density analysis of magnetic spring in energy harvester by Hall-Effect sensors and 2D magnetostatic FE model

Cited by 5 publications

References 25 publications

Ergodic Rate Analysis for Full-Duplex and Half-Duplex Networks with Energy Harvesting

Ergodic Rate Analysis for Full-Duplex and Half-Duplex Networks with Energy Harvesting

Temperature self-compensating photonic crystal fiber grating magnetic field sensor

A Triple Piezoelectric‐Electromagnetic‐Piezoelectric Energy Harvester with Cam Contact Driven and Cylindrical Magnet Noncontact Driven

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