2019 IEEE Biomedical Circuits and Systems Conference (BioCAS)最新文献

Live Demonstration: Optogenetic Neuro-prosthetics 现场演示:光遗传神经假肢

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8918976

Yu Liu, Dimitrios Firfilionis, A. Harvey, Epifanos Baikas, Yrgalem Zeleke, P. Degenaar

引用次数: 1

An Edge AI System-on-Chip Design with Customized Convolutional-Neural-Network Architecture for Real-time EEG-Based Affective Computing System 基于实时脑电图的情感计算系统的定制卷积神经网络架构的边缘人工智能片上系统设计

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8919038

Yu-De Huang, Kai-Yen Wang, Yun-Lung Ho, Chang-Yuan He, W. Fang

引用次数: 9

Towards a mm-Sized Free-Floating Wireless Implantable Opto-Electro Stimulation Device 研制一种毫米大小的自由漂浮无线植入式光电刺激装置

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8919217

Y. Jia, Maysam Ghovanloo

{"title":"Towards a mm-Sized Free-Floating Wireless Implantable Opto-Electro Stimulation Device","authors":"Y. Jia, Maysam Ghovanloo","doi":"10.1109/BIOCAS.2019.8919217","DOIUrl":"https://doi.org/10.1109/BIOCAS.2019.8919217","url":null,"abstract":"Next generation of brain-machine interfaces (BMI) will be able to interface with large-scale neuronal ensembles over large brain areas with a distributed architecture consisting of multiple tiny implants. This paper presents a system-on-a-chip (SoC) prototype towards a mm-sized free-floating wirelessly-powered implantable 16-ch opto-electro stimulation (FF-WIOS2) device. FF-WIOS2 is wirelessly powered and controlled through a 3-coil inductive link at 60 MHz. Forward telemetry link delivers stimulation parameters to the FF-WIOS2 via on-off keying (OOK) to configure stimulation patterns. Back telemetry link reports the FF-WIOS2 rectified voltage in a closed-loop fashion via load-shift-keying (LSK) to stabilize the implant received power. The SoC, fabricated in a 0.35-µm standard CMOS process, employs switched-capacitor-based stimulation (SCS) by charging an off-chip capacitor up to 5 V at 37% charging efficiency to provide large instantaneous current. At the onset of stimulation, the capacitor delivers charge, with peak current values of either 1.7-12 mA to a LED array for optical stimulation or 100-700 μA to a microelectrode array (MEA) for biphasic electrical stimulation. The latter mechanism is also actively charge-balanced to ensure stimulation safety.","PeriodicalId":222264,"journal":{"name":"2019 IEEE Biomedical Circuits and Systems Conference (BioCAS)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127481595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Live Demonstration: Smart tracker and gesture capturer for people with Parkinson’s diseases 现场演示:帕金森氏症患者的智能跟踪器和手势捕捉器

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8919250

José Ilton de Oliveira Filho, Mariane Bianca de Melo Bezerra, K. Salama

引用次数: 0

An 802.15.6 HBC Standard Compatible Transceiver and 90 pJ/b Full-Duplex Transceiver for Body Channel Communication 一个802.15.6 HBC标准兼容收发器和90 pJ/b全双工收发器的身体信道通信

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8919040

Jaeeun Jang, Hyunwoo Cho, H. Yoo

引用次数: 3

[Copyright notice] (版权)

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/biocas.2019.8919235

引用次数: 0

Multi-wavelengths Nonlinear Photoacoustic Imaging Based on Compact Laser Diode System 基于小型激光二极管系统的多波长非线性光声成像

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8918709

Hongtao Zhong, Yiyun Wang, Tingyang Duan, Daohuai Jiang, C. Yang, Fei Gao

{"title":"Multi-wavelengths Nonlinear Photoacoustic Imaging Based on Compact Laser Diode System","authors":"Hongtao Zhong, Yiyun Wang, Tingyang Duan, Daohuai Jiang, C. Yang, Fei Gao","doi":"10.1109/BIOCAS.2019.8918709","DOIUrl":"https://doi.org/10.1109/BIOCAS.2019.8918709","url":null,"abstract":"Photoacoustic imaging (PAI) combines the deep penetration of ultrasound imaging and the high absorption contrast of optical imaging, which has attracted increasing research interest in recent years. The PAI based on multi-wavelength laser source is conducive to detecting different components in the blood such as oxygen saturation. The generation of PA signals could rely on the relative low-cost pulsed laser diode. However, the multi-wavelength PAI system requires multiple pulsed laser diodes, which will multiply the cost of the imaging system. On the other hand, the amplitude of the PA signals will change when inducing the Gruneisen relaxation effect due to the heat accumulation. In this paper, we proposed a continuous multi-wavelength photoacoustic imaging (CMPAI) system based on the combination of a single-wavelength pulsed laser diode and a multi-wavelength continuous laser diode module. The continuous wave (CW) laser is adapted for heating the sample. The PA signals are induced by a single-wavelength pulsed laser. By controlling the laser irradiation sequence (pulse-CW-pulse), the images before and after heating will be attained. By proper differentiating operations, the images with different-wavelengths’ light absorption could be revealed. Furthermore, using this proposed system to detect the concentration of ink that is mixed by different portion of green and red ink would be demonstrated in the following.","PeriodicalId":222264,"journal":{"name":"2019 IEEE Biomedical Circuits and Systems Conference (BioCAS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129935066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

A Multi-channel NIRS System for Prefrontal Mental Task Classification Employing Deep Forest Algorithm 基于深度森林算法的多通道近红外系统前额叶心理任务分类

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8919082

Yizhen Wen, Xiangao Qi, Shaoyang Cui, Cheng Chen, Mingye Chen, Jian Zhao, Guoxing Wang

引用次数: 7

High Frequency Dielectric Spectroscopy Array with Code Division Multiplexing for Biological Imaging 用于生物成像的码分复用高频介电光谱阵列

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8919173

Kangping Hu, E. Kennedy, J. Rosenstein

引用次数: 9

The Design of CMOS Electrode-Tissue Impedance Measurement Circuit Using Differential Current Switch with CMFB Bias for Implantable Neuro-Modulation SoCs 基于CMFB偏置差分电流开关的CMOS电极-组织阻抗测量电路设计

2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2019-10-01 DOI: 10.1109/BIOCAS.2019.8919039

Chi-Wei Huang, C. Chung, Ruei-Syuan Syu, Chung-Yu Wu

{"title":"The Design of CMOS Electrode-Tissue Impedance Measurement Circuit Using Differential Current Switch with CMFB Bias for Implantable Neuro-Modulation SoCs","authors":"Chi-Wei Huang, C. Chung, Ruei-Syuan Syu, Chung-Yu Wu","doi":"10.1109/BIOCAS.2019.8919039","DOIUrl":"https://doi.org/10.1109/BIOCAS.2019.8919039","url":null,"abstract":"A new electrode-tissue impedance measurement circuit integrated with a System-on-Chip (SoC) is proposed and designed for implantable medical devices to monitor the electrode-tissue contact status. In the proposed circuit, a differential step current is injected into the electrode-tissue structure to generate a voltage. A differential current switch with a common-mode feedback (CMFB) bias circuit and shaped control signals are designed to generate accurate step currents and stable common-mode bias voltage. Moreover, the measurement circuit shares part of the bio-signal acquisition circuit in the SoC. Thus only an extra power dissipation of 4.3μW is needed at the operating frequency of 15.625Hz. The proposed circuit is fabricated by 0.18 um CMOS technology. The measurement results have shown that the resolution is 17 Ωpp and the maximum error is 3.4% for an impedance of 46kΩ. The proposed circuit is also verified in an in-vitro test by measuring the electrode-tissue impedance of a subdural grid electrode sunk in the phosphate buffered saline (PBS) buffer.","PeriodicalId":222264,"journal":{"name":"2019 IEEE Biomedical Circuits and Systems Conference (BioCAS)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125627522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6