Review of Crucial Problems of Underwater Wireless Power Transmission

Liu, Yu; Sun, Han; Su, Shangwei; Tang, Huixuan; Sun, Hao; Zhang, Xiaoyu

doi:10.3390/electronics12010163

Cited by 8 publications

(2 citation statements)

References 109 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other fields that utilize WPT include underwater sensor networks, and SHM. The far-field radiative power transfer has limited energy transmission efficiency in the underwater, as such inductive wireless power transfer (IWPT) is more common in the underwater [42]- [44]. The underwater environment however does not closely resemble the UG environment.…”

Section: Related Workmentioning

confidence: 99%

Radio Frequency Energy Harvesting for Underground Sensor Nodes: Possibilities and Challenges

Mahenge,

Sinde,

Dida

et al. 2024

IEEE Access

View full text Add to dashboard Cite

Radio frequency energy harvesting (RFEH) is considered an optimal and environmentally friendly solution for energizing sensor devices and prolonging the lifetime of wireless sensor networks (WSNs). Despite being studied and experimented in several environments where WSNs are used, studies and experiments related to RFEH in underground wireless systems are limited to near-field wireless power transfer (WPT), measurement of received signal strength, and current conduction. The goal of this study is to examine the possibilities and challenges of actualizing RFEH in wireless underground sensor networks (WUSNs). A radio-frequency (RF) spectral survey was conducted, and a comparison was performed with similar surveys conducted worldwide to determine the generally available ambient RF energy. Using the aboveground to underground (AG2UG) RF communication model, the signal path loss was analyzed under varying conditions. By relating the ambient RF power and AG2UG signal path loss, it was found nearly impossible to harvest ambient RF energy with the harvesting antenna buried within the soil, as the best-case environment will require a rectenna with sensitivity of at least -62.75dBm. However ambient RF energy can be harvested when the harvesting antenna is in free space, while the other components are underground and will require a high sensitivity of at least -40 dBm. Another possibility for underground RFEH is the use of a dedicated WPT device located 1m above the ground, transmitting at 20 dBm with the RF energy harvester 30 cm below the soil surface with a sensitivity of at least -30 dBm.INDEX TERMS Internet of Underground Things (IoUT), Radio frequency energy harvesting (RFEH), wireless power transfer (WPT), wireless underground sensor networks (WUSNs).

show abstract

Section: Related Workmentioning

confidence: 99%

Radio Frequency Energy Harvesting for Underground Sensor Nodes: Possibilities and Challenges

Mahenge,

Sinde,

Dida

et al. 2024

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Compared with traditional electromagnetic wave wireless energy transmission methods, ultrasonic waves are not affected by electromagnetic interference and eddy current losses and can solve several limitations of electromagnetic induction and magnetic coupling resonant transmission methods for underwater applications, such as the coaxial retention of coils, the magnetic core axis offset, and the instability of the system-coupling state. In addition, acoustic waves have lower propagation losses underwater, resulting in longer propagation distances [ 6 , 7 , 8 ]. The evaluation of underwater wireless energy transmission performance is of great theoretical and practical significance for system design and optimization [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation Method for Underwater Ultrasonic Energy Radiation Performance Based on the Spatial Distribution Characteristics of Acoustic Power

Liu,

Zhang,

Yuan

et al. 2024

Sensors

View full text Add to dashboard Cite

In recent years, underwater wireless ultrasonic energy transmission technology (UWUET) has attracted much attention because it utilizes the propagation characteristics of ultrasound in water. Effectively evaluating the performance of underwater ultrasonic wireless energy transmission is a key issue in engineering design. The current approach to performance evaluation is usually based on the system energy transfer efficiency as the main criterion, but this criterion mainly considers the overall energy conversion efficiency between the transmitting end and the receiving end, without an in-depth analysis of the characteristics of the distribution of the underwater acoustic field and the energy loss that occurs during the propagation of acoustic waves. In addition, existing methods focusing on acoustic field analysis tend to concentrate on a single parameter, ignoring the dynamic distribution of acoustic energy in complex aquatic environments, as well as the effects of changes in the underwater environment on acoustic propagation, such as spatial variability in temperature and salinity. These limitations reduce the usefulness and accuracy of models in complex marine environments, which in turn reduces the efficiency of acoustic energy management and optimization. To solve these problems, this study proposes a method to evaluate the performance of underwater ultrasonic energy radiation based on the spatial distribution characteristics of acoustic power. By establishing an acoustic power distribution model in a complex impedance–density aqueous medium and combining numerical simulation and experimental validation, this paper explores the spatial variation of acoustic power and its impact on the energy transfer efficiency in depth. Using high-resolution spatial distribution data and actual environmental parameters, the method significantly improves the accuracy of the assessment and the adaptability of the model in complex underwater environments. The results show that, compared with the traditional method, this method performs better in terms of the accuracy of the acoustic energy radiation calculation results, and is able to reflect the energy distribution and spatial heterogeneity of the acoustic source more comprehensively, which provides an important theoretical basis and practical guidance for the optimal design and performance enhancement of the underwater ultrasonic wireless energy transmission system.

show abstract

FPC receiving coil for wireless power transmission to rotational axis sensors

Guo,

Wang,

2024

J. Power Electron.

View full text Add to dashboard Cite

Review of Crucial Problems of Underwater Wireless Power Transmission

Cited by 8 publications

References 109 publications

Radio Frequency Energy Harvesting for Underground Sensor Nodes: Possibilities and Challenges

Radio Frequency Energy Harvesting for Underground Sensor Nodes: Possibilities and Challenges

Evaluation Method for Underwater Ultrasonic Energy Radiation Performance Based on the Spatial Distribution Characteristics of Acoustic Power

FPC receiving coil for wireless power transmission to rotational axis sensors

Contact Info

Product

Resources

About