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International Symposium on Bioelectronics and Bioinformations 2011最新文献

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ECG characteristic points detection using general regression neural network-based particle filters 基于广义回归神经网络的粒子滤波心电特征点检测
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107669
Guojun Li, Xiaona Zhou, Shu-ting. Zhang, N. Liu
{"title":"ECG characteristic points detection using general regression neural network-based particle filters","authors":"Guojun Li, Xiaona Zhou, Shu-ting. Zhang, N. Liu","doi":"10.1109/ISBB.2011.6107669","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107669","url":null,"abstract":"Characteristic points (CPs) detection is still an open problem for the automatic analysis of electrocardiogram (ECG). Past Kalman Filter-Based efforts to extract CPs rely on a locally linearized approximation of the nonlinear ECG dynamical model and fail to detect all CPs accurately for strong noisy ECG. In this study, an improved particle filters-based algorithm is developed to track the dynamical ECG morphology and localize its characteristic points in strong noisy environments. Experiments on real ECG records contaminated by different coloration noise clearly show the superior performance of the presented approach over the Kalman Filter method.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131458157","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
Wireless data and power transmission circuits in biomedical implantable applications 生物医学植入式应用中的无线数据和电力传输电路
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107632
Chen-Hua Kao, Yu-Po Lin, K. Tang
{"title":"Wireless data and power transmission circuits in biomedical implantable applications","authors":"Chen-Hua Kao, Yu-Po Lin, K. Tang","doi":"10.1109/ISBB.2011.6107632","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107632","url":null,"abstract":"Current bio-implantable systems have developed to possess a wireless power and data transmission structure. The two-way data transmission via wireless transmission, we can control the implant system and obtain information from the implanted system. This study presents a transceiver circuit that contains ASK demodulator and FSK modulator with an on-chip power regulator for biomedical implantable systems. This design has been fabricated and tested in TSMC 0.18-μm 1P6M CMOS technology. Transmission system receives external power energy and data by electromagnetic coupling. Power regulator generates a stable power to supply chip or other circuits. In implantable device, the ASK demodulator is used to demodulate the received ASK control signal and clock. FSK modulator is used to modulate the data and transmit the data.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131651809","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: 9
Bifurcation phenomenon of wendling's EEG model 温德林脑电图模型的分岔现象
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107658
Shujuan Geng, Weidong Zhou, Qi Yuan, Zheneng-hua Ma
{"title":"Bifurcation phenomenon of wendling's EEG model","authors":"Shujuan Geng, Weidong Zhou, Qi Yuan, Zheneng-hua Ma","doi":"10.1109/ISBB.2011.6107658","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107658","url":null,"abstract":"In this paper, we present a mathematical analysis of an EEG model proposed by Wendling et al. We analyze the Hopf bifurcation and saddle-node bifurcation phenomenon of the model for explaining how it can produce several different types of EEG activity. We give a fairly detailed description of the behavior of the model by the bifurcation diagram. Study on bifurcations of Wendling's model provides further theoretical reference for understanding brain's nonlinear electric activity.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129543710","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: 4
Time domain electrical impedance measurement method for ultrasound transducer 超声换能器时域电阻抗测量方法
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107701
Tan Jian-wen, Liao Rui-jin, Wang Hua, Li Long, Qiang Sheng-ze
{"title":"Time domain electrical impedance measurement method for ultrasound transducer","authors":"Tan Jian-wen, Liao Rui-jin, Wang Hua, Li Long, Qiang Sheng-ze","doi":"10.1109/ISBB.2011.6107701","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107701","url":null,"abstract":"High intensity focused ultrasound transducer (HIFU) is a key part of HIFU treatment system, the electrical impedance characteristics of which is an important parameter. The currently adopted electrical impedance measurement methods are based on frequency-domain, which are expensive and difficult to realize on-line measurement. The time-domain measurement method for electrical impedance of high intensity focused ultrasound transducer based on impulse response is studied in this paper. The principle of measurement is theoretically analyzed and verified through simulation. The measurement platform is experimentally established and the measurement results of impedance analyzer and impulse response method are compared. The approaches of current sampling resistor correction and wavelet denoising to reducing measurement error are presented. The study results show that: the impulse response measurement method can obtain good measurement accuracy after current sample resistance correcting and wavelet denoising; the measurement method is cost-effective and convenient for integrating in equipment to realize on-line measurement. This measurement method also provides an effective means of researching electrical impedance characteristic of high intensity focused ultrasound transducer.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128672361","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
Laser beacon adaptive optics ophthalmoscope for retinal multilayer imaging 激光信标自适应光学检眼镜用于视网膜多层成像
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107664
Li Ruixue, L. Dayu, Xiang Mingliang, Kong Ningning, Qi Yue, Zheng Xian-liang, Xuan Li
{"title":"Laser beacon adaptive optics ophthalmoscope for retinal multilayer imaging","authors":"Li Ruixue, L. Dayu, Xiang Mingliang, Kong Ningning, Qi Yue, Zheng Xian-liang, Xuan Li","doi":"10.1109/ISBB.2011.6107664","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107664","url":null,"abstract":"A flood-illuminated adaptive optics ophthalmoscope for retinal multilayer imaging is introduced in this paper. By arranging an alterable stop in the illumination path, the illuminated area of retinal layer can be changed. A laser beacon for wavefront sensing is formed when the stop is a narrow aperture. The large aperture allows flood illumination and expands imaging field. A moveable imaging camera can focus on different layers of the retina. In the confirming experiment, a subject who was a 25-years-old normal health Chinese male was imaged. We got clear images of photoreceptor layer, blood vessels and nerve fiber layer.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129533389","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: 1
Automated detection of plantar pressure ROIs based on multiple frame data 基于多帧数据的足底压力roi自动检测
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107638
Z. Mei, G. Zhao, L. Wang
{"title":"Automated detection of plantar pressure ROIs based on multiple frame data","authors":"Z. Mei, G. Zhao, L. Wang","doi":"10.1109/ISBB.2011.6107638","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107638","url":null,"abstract":"Semi-automatic or manual method were usually used to define the region of interest (ROI) of dynamic plantar pressure for foot's biomechanical research. However, the existing methods are time-consuming, complicated, or unrepeatable. So, automatic method to extract ROIs is needed. Moreover, spatial adjacency of ROIs in the forefoot put forward the challenge for automatic methods. The objective of this study is to find out an automatic method for defining the ROIs using dynamic plantar pressure information of multiple frames. Twenty subjects were asked to participate in tests. The plantar pressure data and 3D kinematical data were collected. The maximal inter-frame difference during stand phase was calculated. Then the locations of ROIs were determined by using maximal inter-frame difference and priori knowledge about spatial relation of anatomical location of ROIs. Recognition accuracy by using our method was compared with by using Motion Analysis. The results indicated that using inter-frame difference was able to produce recognition accuracy 100%, 100%, 90%, 100%, 90%, 90% for halluces and metatarsus I to V, respectively, which had highly agreement with the result of 3D motion capture system. Furthermore, our method is simple and discreet, which could be employed in wider applications.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124743629","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: 1
Analog front-end circuit with low-noise amplifier and high-pass sigma-delta modulator for an EEG or ECoG acquisition system 具有低噪声放大器和高通σ - δ调制器的模拟前端电路，用于脑电图或ECoG采集系统
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107634
Jia-Hua Hong, Ming-Chun Liang, Ming-Yang Haung, T. Tsai, Q. Fang, Shuenn-Yuh Lee
{"title":"Analog front-end circuit with low-noise amplifier and high-pass sigma-delta modulator for an EEG or ECoG acquisition system","authors":"Jia-Hua Hong, Ming-Chun Liang, Ming-Yang Haung, T. Tsai, Q. Fang, Shuenn-Yuh Lee","doi":"10.1109/ISBB.2011.6107634","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107634","url":null,"abstract":"The present paper proposes an analog front-end (AFE) circuit, including only one low-noise amplifier with chopping techniques and one high-pass sigma-delta modulator (HPSDM), which can be applied as a sensing circuit for electroencephalogram or electrocorticogram (ECoG) signal acquisition systems. The low-noise amplifier, which has a close-loop gain of 20 V/V and CMRR of 109.6 dB, is implemented by a differential difference amplifier with feedback pseudo-resistors and capacitors. The HPSDM is implemented in a feed-forward architecture with an order of 3, an oversampling ratio of 128, and a 1-bit quantizer under a sampling frequency of 51.2 kHz. The TSMC 0.18 μm 1P6M CMOS process is used in the entire AFE circuit with a supply voltage of 1.2 V and power consumption of 28.7 μW. Within the maximum range of ECoG signals, the simulated SNR and SFDR of the entire AFE circuits are 70.8 and 73 dB, respectively.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134296181","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
A human body communication transceiver based on on-off keying modulation 一种基于开关键控调制的人体通信收发器
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107645
Tengfei Leng, Ze-dong Nie, Wenchen Wang, Feng Guan, Lei Wang
{"title":"A human body communication transceiver based on on-off keying modulation","authors":"Tengfei Leng, Ze-dong Nie, Wenchen Wang, Feng Guan, Lei Wang","doi":"10.1109/ISBB.2011.6107645","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107645","url":null,"abstract":"This paper presents an on-off keying (OOK) human body communication (HBC) transceiver design method for wireless body-area network (WBAN). The HBC channel in shield chamber by adopting floating ground experiment setup is analyzed and the optimal carrier frequency of 30 MHz is chosen. A FPGA and a direct-digital synthesizer (DDS) are applied to achieve OOK modulation in the HBC transmitter. In the receiver part, the signal is firstly filtered by a band pass filter, and then converted to voltage through a logarithmic amplifier. Finally a comparator and a clock data recover (CDR) circuit are used to recovery the data. The proposed HBC transceiver is implemented in a PCB board and validated in human body. The result shows that the transceiver can transfer 2-Mbps none return zero (NRZ) data from forearm to finger through the human body successfully.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126676721","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: 12
A low-power circuit for BPSK and QPSK demodulation for body area networks applications 用于体域网络的BPSK和QPSK解调的低功耗电路
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107691
Jinzhao Lin, You Zhou, Yu Pang, Zhangyong Li, Zhiqiang Zhao, Heng Wang
{"title":"A low-power circuit for BPSK and QPSK demodulation for body area networks applications","authors":"Jinzhao Lin, You Zhou, Yu Pang, Zhangyong Li, Zhiqiang Zhao, Heng Wang","doi":"10.1109/ISBB.2011.6107691","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107691","url":null,"abstract":"Body area networks (BANs) are of importance for telemedicine and telehealth services, so they have caught many engineers' attention. A coordinator in a BAN plays a significant role to collect signals from sensors and interface with telecommunication networks. Since the wireless channel of BAN is very complicated and changeable, the modulation is not fixed. As a result, the coordinator must have different demodulators. In this paper, we propose a method to design a low-power circuit which can both demodulate BPSK and QPSK by using the technique of datapath merging. The results of the experiments show that the proposed demodulator implementation can reduce around 23% hardware area compared with the traditional implementation.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"81 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114330419","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: 2
Automated detection and quantification of early caries lesions on images captured by intraoral camera 自动检测和量化口腔内相机捕获的早期龋齿病变图像
International Symposium on Bioelectronics and Bioinformations 2011 Pub Date : 2011-12-19 DOI: 10.1109/ISBB.2011.6107694
Jiayong Yan, Yongjia Xiang, X. Jian
{"title":"Automated detection and quantification of early caries lesions on images captured by intraoral camera","authors":"Jiayong Yan, Yongjia Xiang, X. Jian","doi":"10.1109/ISBB.2011.6107694","DOIUrl":"https://doi.org/10.1109/ISBB.2011.6107694","url":null,"abstract":"In recent years, quantifying the severity of early caries lesions based on white light and/or fluorescence images captured by intraoral camera has been becoming a hot spot in caries research field. In order to quantify the severity of the early caries lesions, it needs to detect and segment the caries lesions accurately first. However, to date, the published methods are mainly based on threshold techniques, and it is difficult to obtain desirable results because the intensity of the teeth changes significantly. To solve this problem, this paper presents an automated detection and quantification algorithm by using a morphological top-hat/bottom-hat method along with a multi-resolution surface reconstruction technique, which is based on local intensity and morphological characteristics of caries images captured by the intraoral oral camera, for early caries lesions. The preliminary experimental results on ex vivo data demonstrated the potential of the proposed algorithm.","PeriodicalId":345164,"journal":{"name":"International Symposium on Bioelectronics and Bioinformations 2011","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122841343","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: 4
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