2017 IEEE Biomedical Circuits and Systems Conference (BioCAS)最新文献_第2页

Adaptive power regulation and data delivery for multi-module implants 多模块植入的自适应功率调节和数据传输

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-19 DOI: 10.1109/BIOCAS.2017.8325208

A. Mifsud, Dorian Haci, S. Ghoreishizadeh, Yan Liu, T. Constandinou

{"title":"Adaptive power regulation and data delivery for multi-module implants","authors":"A. Mifsud, Dorian Haci, S. Ghoreishizadeh, Yan Liu, T. Constandinou","doi":"10.1109/BIOCAS.2017.8325208","DOIUrl":"https://doi.org/10.1109/BIOCAS.2017.8325208","url":null,"abstract":"Emerging applications for implantable devices are requiring multi-unit systems with intrabody transmission of power and data through wireline interfaces. This paper proposes a novel method for power delivery within such a configuration that makes use of closed loop dynamic regulation. This is implemented for an implantable application requiring a single master and multiple identical slave devices utilising a parallel-connected 4-wire interface. The power regulation is achieved within the master unit through closed loop monitoring of the current consumption to the wired link. Simultaneous power transfer and full-duplex data communication is achieved by superimposing the power carrier and downlink data over two wires and uplink data over a second pair of wires. Measured results using a fully isolated (AC coupled) 4-wire lead, demonstrate this implementation can transmit up to 120 mW of power at 6 V (at the slave device, after eliminating any losses). The master device has a maximum efficiency of 80 % including a dominant dynamic power loss. A 6 V constant supply at the slave device is recovered 1.5 ms after a step of 22 mA.","PeriodicalId":361477,"journal":{"name":"2017 IEEE Biomedical Circuits and Systems Conference (BioCAS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123049954","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

CPG-based circuitry for controlling musculoskeletal model of human locomotor system 基于cpg的人体运动系统肌肉骨骼模型控制电路

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-19 DOI: 10.1109/BIOCAS.2017.8325131

A. Shachykov, P. Hénaff, A. Popov, A. Shulyak

{"title":"CPG-based circuitry for controlling musculoskeletal model of human locomotor system","authors":"A. Shachykov, P. Hénaff, A. Popov, A. Shulyak","doi":"10.1109/BIOCAS.2017.8325131","DOIUrl":"https://doi.org/10.1109/BIOCAS.2017.8325131","url":null,"abstract":"In this paper, a new neuro-musculoskeletal simulator of human locomotor system is presented. This simulator is dedicated to reproduce healthy or altered walking gaits. It contains three joints per leg (hip, knee, ankle) controlled by twelve human muscle models activated by six specific models of central pattern generator (CPG). The CPG consists of three layers and four types of neurons and controls human leg joints. The CPGs are able to generate variable rhythmic signals by changing their intrinsic neural parameters which are controlled by descending signals from mesencephalic locomotor region (MLR), while output signals of motoneurons of CPGs control muscle models. Simulation results in Matlab show that it is possible to generate different stable walking gaits by changing intrinsic parameters of CPGs. According to these changes, the simulator can exhibit coherent or incoherent coordination between the two legs and consequently, stable or unstable walking gaits starting from the double support phase. Results show that this simulator will allow to reproduce walking gaits altered by basal ganglia decision-making system affected by Parkinson's disease.","PeriodicalId":361477,"journal":{"name":"2017 IEEE Biomedical Circuits and Systems Conference (BioCAS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130025173","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

Recombinase-based genetic circuit optimization 基于重组的遗传电路优化

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-19 DOI: 10.1109/BIOCAS.2017.8325220

Chun-Ning Lai, J. H. Jiang, F. Fages

引用次数: 2

A wireless system for continuous in-mouth pH monitoring 一种用于连续口腔pH监测的无线系统

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-19 DOI: 10.1109/BIOCAS.2017.8325556

Daryl Ma, Christine Mason, S. Ghoreishizadeh

引用次数: 7

Microwire-CMOS integration of mm-scale neural probes for chronic local field potential recording 微线- cmos集成的毫米级神经探针用于慢性局部场电位记录

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-19 DOI: 10.1109/BIOCAS.2017.8325185

K. Szostak, Federico Mazza, M. Maslik, Lieuwe B. Leene, Peilong Feng, T. Constandinou

{"title":"Microwire-CMOS integration of mm-scale neural probes for chronic local field potential recording","authors":"K. Szostak, Federico Mazza, M. Maslik, Lieuwe B. Leene, Peilong Feng, T. Constandinou","doi":"10.1109/BIOCAS.2017.8325185","DOIUrl":"https://doi.org/10.1109/BIOCAS.2017.8325185","url":null,"abstract":"This paper proposes a novel method for integrating CMOS microelectronics with microwire-based electrodes for next generation implantable brain machine interfaces. There is strong evidence to suggest that microwire-based electrodes outperform micromachined and polymer-based electrodes in terms of signal integrity and chronic viability. Furthermore, it has been shown that the recording of Local Field Potentials (LFPs) is more robust to tissue damage and scar tissue growth when compared to action potentials. This work therefore investigates the suitability of microwire electrodes for LFP recording by studying the electrical properties of key materials. We identify Niobium (Nb) as a candidate material with highly desirable properties. There is however also an inherent incompatibility when it comes to connection of microwire-based electrodes to silicon chips. Here we present a new process flow utilising a recessed glass substrate for mechanical support, silicon interposer for interconnection, and electroplating for contact adhesion. Furthermore, the proposed structure lends itself to hermetic encapsulation towards gas cavity based micropackages.","PeriodicalId":361477,"journal":{"name":"2017 IEEE Biomedical Circuits and Systems Conference (BioCAS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123203456","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: 11

Cortical motor intention decoding on an analog co-processor with fast training for non-stationary data 基于非平稳数据快速训练模拟协处理器的皮层运动意向解码

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-19 DOI: 10.1109/BIOCAS.2017.8325073

Shoeb Shaikh, Yi Chen, A. Basu, R. So

引用次数: 5

Efficient through-waveguide wireless power transfer for body area networks 体域网络的高效通波导无线能量传输

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-19 DOI: 10.1109/BIOCAS.2017.8325112

A. Vorobyov, Vladimir Kopta, J. Farserotu, C. Enz

引用次数: 1

A versatile electrode sorting module for MEAs: Implementation in a FPGA-based real-time system 用于mea的通用电极分选模块:在基于fpga的实时系统中的实现

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-17 DOI: 10.1109/BIOCAS.2017.8325154

A. Pirog, Y. Bornat, S. Renaud, R. Perrier, M. Jaffredo, M. Raoux, J. Lang

引用次数: 2

Measurement of energy transmission efficiency of transcutaneous energy transformer in NaCl solution for ventricular assist devices by reducing common-mode current in the range of 200–1500 kHz 降低200 - 1500khz共模电流，测量心室辅助装置用经皮能量转换器在NaCl溶液中的能量传输效率

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-01 DOI: 10.1109/BIOCAS.2017.8325213

T. Kaga, K. Shiba

{"title":"Measurement of energy transmission efficiency of transcutaneous energy transformer in NaCl solution for ventricular assist devices by reducing common-mode current in the range of 200–1500 kHz","authors":"T. Kaga, K. Shiba","doi":"10.1109/BIOCAS.2017.8325213","DOIUrl":"https://doi.org/10.1109/BIOCAS.2017.8325213","url":null,"abstract":"The air-core transcutaneous energy transmission system (TETS) uses magnetic fields to transfer energy wirelessly to a ventricular assist device; the energy is transferred from a coil placed on the surface of the body (primary coil) to one inside the body. Accurate measurement of efficiency of the TETS is difficult because of the large common-mode (CM) current which flows through the ground line and the low sampling rate of the measurement equipment. In this study, a CM choke coil and a floating type measurement equipment were used to reduce the CM current flowing through the ground. Furthermore, the value of the efficiency obtained from measurements made using a floating oscilloscope with a high sampling rate was compared with the theoretical estimate of the efficiency when the transformer was kept immersed in NaCl solution to imitate the human biological tissue. In the range of 200–1500 kHz, it was possible to effectively suppress the CM current in the NaCl solution; the ratio of the primary current I1 to the CM current Icm obtained in the improved method was 21% less compared to the corresponding ratio in the conventional method. At the frequency of 500 kHz, in the NaCl solution, the maximum measured value of efficiency was 91.82%, whereas the theoretical estimate was 93.50%. The measured efficiency in the improved measurement method is in good agreement with the theoretical efficiency.","PeriodicalId":361477,"journal":{"name":"2017 IEEE Biomedical Circuits and Systems Conference (BioCAS)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116654785","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: 3

Power analysis of a mobile EEG system with compressed sensing 基于压缩感知的移动脑电系统功率分析

2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2017-10-01 DOI: 10.1109/BIOCAS.2017.8325159

Bathiya Senevirathna, P. Abshire

引用次数: 0