Energy storage solution for wireless sensor network used in bridge surface corrosion monitoring

Fujimoto, Takafumi; Shintaro, Uto; Ishizuka, Yoichi; Fujishima, Tomoyuki; Guan, Chai‐Eu; Okumatsu, Toshihiro; Sugimoto, Satoshi; Iwasaki, Shinya

doi:10.1049/el.2019.1875

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…If the changes are not on time, the energy of sensors will be insufficient, which will lead to node faults or even network interruptions [8]. To solve the abovementioned problems, some researchers tried to use natural energies such as radio frequency energy, photovoltaic energy, wind energy, water droplet impact energy and fuel cell to power WSNs [9][10][11][12][13]. However, these solutions all harvest energy from nature and they are easily affected by environmental and weather factors.…”

Section: Introductionmentioning

confidence: 99%

A Novel Single-Wire Power Transfer Method for Wireless Sensor Networks

Wang

Zhai

et al. 2020

Energies

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Wireless sensor networks (WSNs) have broad application prospects due to having the characteristics of low power, low cost, wide distribution and self-organization. At present, most the WSNs are battery powered, but batteries must be changed frequently in this method. If the changes are not on time, the energy of sensors will be insufficient, leading to node faults or even networks interruptions. In order to solve the problem of poor power supply reliability in WSNs, a novel power supply method, the single-wire power transfer method, is utilized in this paper. This method uses only one wire to connect source and load. According to the characteristics of WSNs, a single-wire power transfer system for WSNs was designed. The characteristics of directivity and multi-loads were analyzed by simulations and experiments to verify the feasibility of this method. The results show that the total efficiency of the multi-load system can reach more than 70% and there is no directivity. Additionally, the efficiencies are higher than wireless power transfer (WPT) systems under the same conductions. The single-wire power transfer method could satisfy the characteristics of WSNs and effectively solve the problem of poor power supply reliability.

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Section: Introductionmentioning

confidence: 99%

A Novel Single-Wire Power Transfer Method for Wireless Sensor Networks

Wang

Zhai

et al. 2020

Energies

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Safety monitoring method of vehicle bridge stress structure based on wireless sensing technology

Lian

2021

J. Phys.: Conf. Ser.

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In the safety monitoring of bridge stress structure, the influence of surrounding environment and noise interference will cause the change of monitoring node coverage and affect the monitoring accuracy. Based on wireless sensor technology, a safety monitoring method of vehicle bridge stress structure is proposed. The interpolation fitting method is used to calculate the stress value of the sensor, and the optimal layout of the sensor is determined with the minimum deflection transfer error as the objective function. Probability sensing model is used to establish wireless overlay network, and wireless sensing technology is used to collect monitoring data. Based on the monitoring data, the static and dynamic response equation is established to establish the finite element model of bridge stress structure. The first level early warning threshold is determined according to the monitoring data under the normal operation state of the bridge, and the second level early warning threshold is determined according to the most unfavorable load distribution of the finite element model, so as to complete the bridge safety monitoring. The experimental results show that the average deformation deviation of the monitoring method proposed in this paper is 0.26mm, which is 0.77mm and 1.22mm smaller than the monitoring methods based on machine vision and GPS differential positioning technology, indicating that the monitoring method in this paper is more accurate and meets the safety requirements of bridge engineering.

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