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Your search keyword '"Jeon, Deok Hwan"' showing total 18 results
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18 results on '"Jeon, Deok Hwan"'

7. Uniform stress distribution road piezoelectric generator with free-fixed-end type central strike mechanism

Author

Hong, Seong Do, primary, Ahn, Jung Hwan, additional, Kim, Kyung-Bum, additional, Kim, Jeong Hun, additional, Cho, Jae Yong, additional, Woo, Min Sik, additional, Song, Yewon, additional, Hwang, Wonseop, additional, Jeon, Deok Hwan, additional, Kim, Jihoon, additional, Jeong, Se Yeong, additional, Woo, Sang Bum, additional, Ryu, Chul Hee, additional, Song, Yooseob, additional, and Sung, Tae Hyun, additional

Published
2022
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9. A lever-type piezoelectric energy harvester with deformation-guiding mechanism for electric vehicle charging station on smart road

Author

Jeon, Deok Hwan, primary, Cho, Jae Yong, additional, Jhun, Jeong Pil, additional, Ahn, Jung Hwan, additional, Jeong, Sinwoo, additional, Jeong, Se Yeong, additional, Kumar, Anuruddh, additional, Ryu, Chul Hee, additional, Hwang, Wonseop, additional, Park, Hansun, additional, Chang, Cheulho, additional, Lee, Hyoungjin, additional, and Sung, Tae Hyun, additional

Published
2021
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17. Wearable Shoe-Mounted Piezoelectric Energy Harvester for a Self-Powered Wireless Communication System.

Author

Jeong, Se Yeong, Xu, Liang Liang, Ryu, Chul Hee, Kumar, Anuruddh, Hong, Seong Do, Jeon, Deok Hwan, Cho, Jae Yong, Ahn, Jung Hwan, Joo, Yun Hwan, Jeong, In Wha, Hwang, Won Seop, and Sung, Tae Hyun

Subjects
TRANSMITTERS (Communication), SHOE soles, WIRELESS communications
Abstract

This study covers a self-powered wireless communication system that is powered using a piezoelectric energy harvester (PEH) in a shoe. The lead-zirconate-titanate (PZT) ceramic of the PEH was coated with UV resin, which (after curing under UV light) allowed it to withstand periodic pressure. The PEH was designed with a simple structure and placed under the sole of a shoe. The durability of the PEH was tested using a pushing tester and its applicability in shoes was examined. With periodic compression of 60 kg, the PEH produced 52 μW of energy at 280 kΩ. The energy generated by the PEH was used to power a wireless transmitter. A step-down converter with an under-voltage lockout function was used to gather enough energy to operate the wireless transmitter. The transmitter can be operated initially after walking 24 steps. After the transmitter has been activated, it can be operated again after 8 steps. Because a control center receives signals from the transmitter, it is possible to check the status of workers who work outside at night or mostly alone, to detect emergencies. [ABSTRACT FROM AUTHOR]

Published
2022
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18. Enhanced flexible piezoelectric generating performance via high energy composite for wireless sensor network.

Author

Kim, Kyung-Bum, Cho, Jae Yong, Jeon, Deok Hwan, Ahn, Jung Hwan, Hong, Seong Do, Jeong, Young-Hun, Nahm, Sahn, and Sung, Tae Hyun

Subjects
*PIEZOELECTRIC devices, *PARTICLES, *MECHANICAL deformation measurement, *ENERGY harvesting, *POLYDIMETHYLSILOXANE
Abstract

Piezoelectric 0.72 Pb(Zr 0.47 Ti 0.53 )O 3 -0.28 Pb[(Zn 0.45 Ni 0.55 ) 1/3 Nb 2/3 ]O 3 + 0.5 mol% CuO (PNNC) particles were made for use in a composite of flexible energy harvester (FEH) that can convert sustainable mechanical deformation into electrical energy. The PNNC particles with a high transduction coefficient ( d 33  ×  g 33 ) were mixed with polydimethylsiloxane (PDMS) matrix to produce the FEH. The FEH generated maximum output voltage of 55.24 V and current density of 2.76 μA/cm 2 (power density: 554 μW/cm 3 , 3.2 mW) at the resonance frequency of 11 Hz. The energy conversion efficiency of about 20.7% has been achieved. The developed energy harvester is demonstrated in the self-powered wireless sensor node application in which the FEH spontaneously generated stable power under continuous mechanical stress. [ABSTRACT FROM AUTHOR]

Published
2018
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