Z
Zhengyang Qian
Researcher at Tohoku University
Publications - 8
Citations - 25
Zhengyang Qian is an academic researcher from Tohoku University. The author has contributed to research in topics: Waveform & Ring oscillator. The author has an hindex of 2, co-authored 8 publications receiving 9 citations.
Papers
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Journal ArticleDOI
Development of integrated photoplethysmographic recording circuit for trans-nail pulse-wave monitoring system
Zhengyang Qian,Yoshiki Takezawa,Kenji Shimokawa,Hisashi Kino,Takafumi Fukushima,Koji Kiyoyama,Tetsu Tanaka +6 more
TL;DR: A trans-nail pulse-wave monitoring system that was placed on the fingernail to detect photoplethysmographic (PPG) signals as pulse waves and electrical characteristics of the prototype system were evaluated precisely and PPG waveforms were obtained successfully.
Proceedings ArticleDOI
PPG and SpO 2 Recording Circuit with Ambient Light Cancellation for Trans-Nail Pulse-Wave Monitoring System
Ryosuke Yabuki,Tetsu Tanaka,Zhengyang Qian,Kar Mun Lee,Bang Du,Filipe Alves Satake,T. Fukushima,Hisashi Kino,Takafumi Fukushima,Koji Kiyoyama +9 more
TL;DR: A trans-nail pulse-wave monitoring system, which is able to record the PPG signal on nail-tip without discomfort and any effects from sweat is developed, proving that it worked as it designed.
Proceedings ArticleDOI
Experimental evaluation of stimulus current generator with Laplacian edge-enhancement for 3-D stacked retinal prosthesis chip
Kenji Shimokawa,Zhengyang Qian,Yoshiki Takezawa,Hisashi Kino,Takafumi Fukushima,Koji Kiyoyama,Tetsu Tanaka +6 more
TL;DR: Experimental results showed the fabricated stimulus current generator completely captured an input image and successfully performed the EE processing for the input image data, and total output current from photo-diodes, which became input currents of biphasic pulse generator, was reduced by 87% with the EE circuit.
Journal ArticleDOI
Significant Die-Shift Reduction and μ LED Integration Based on Die-First Fan-Out Wafer-Level Packaging for Flexible Hybrid Electronics
Takafumi Fukushima,Yuki Susumago,Zhengyang Qian,Chidai Shima,Bang Du,Noriyuki Takahashi,Shuta Nagata,Tomo Odashima,Hisashi Kino,Tetsu Tanaka +9 more
TL;DR: In this paper, an on-nail photoplethysmogram (PPG) sensor module is integrated with a polydimethylsiloxane (PDMS) mold resin for real-time monitoring pulse wave and percutaneous oxygen saturation (SpO2).
Proceedings ArticleDOI
Continuous Peripheral Blood Pressure Measurement with ECG and PPG Signals at Fingertips
Kar Mun Lee,Zhengyang Qian,Ryosuke Yabuki,Bang Du,Hisashi Kino,Takafumi Fukushima,Koji Kiyovama,Tetsu Tanaka +7 more
TL;DR: A system using the pulse arrival time (PAT) to measure BP, which fairly passed the strict standard set by IEEE, and has the potential to become a wireless wearable in the future.