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2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)最新文献

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Design of a low power CMOS class-D amplifier for hearing aids 助听器用低功耗CMOS d类放大器的设计
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706675
Daniel E. Silva Piovani, M. C. Schneider, C. Galup-Montoro
{"title":"Design of a low power CMOS class-D amplifier for hearing aids","authors":"Daniel E. Silva Piovani, M. C. Schneider, C. Galup-Montoro","doi":"10.1109/CASME.2010.5706675","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706675","url":null,"abstract":"This work proposes a design of a class-D amplifier for low voltage operation and reduced power consumption, for application in hearing aid devices. Applying compact model equations to the design based on the inversion level guarantees an optimum trade-off among area, power consumption, minimum operation voltage and frequency. The correct operation of the system was verified through simulations of the circuits designed in commercial 0.35 µm technology. Efficiencies over 75 %, up to a maximum of 90.6 % were achieved for output power greater than one quarter of the maximum power. The power consumption without load is 68 µW at 1.4 V power supply, the minimum operation voltage is 1.1 V, with total harmonic distortion less than 1 %. The amplifier active area is around 0.073 mm2.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125670914","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
Respiration rate extraction from ECG signal via discrete wavelet transform 基于离散小波变换的心电信号呼吸频率提取
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706679
A. Espiritu Santo, C. Carbajal
{"title":"Respiration rate extraction from ECG signal via discrete wavelet transform","authors":"A. Espiritu Santo, C. Carbajal","doi":"10.1109/CASME.2010.5706679","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706679","url":null,"abstract":"In many vital signs monitoring systems, the ECG signal is detected but not the respiration rate. Nonetheless, the need for continuous, noninvasive, and reliable respiratory rate monitoring has long been recognized. We describe here a signal processing technique based on wavelets that derives the respiratory waveform from ordinary single-lead ECG. The proposed method first decomposes the ECG signal with the DWT up to its 9th or 10th level. Two correction rules are used for determining the decomposition level to be used according to the respiration frequency. Then the signal is reconstructed just one level using the high frequency reconstruction filter of the DWT in order to remove the coefficient Approximations (cA) components. Finally, a simple threshold is applied and a peak detection algorithm is used after obtaining the coefficients Details (cD) reconstruction. The results are interpreted as individual respiration movements. From there the respiration rate is extracted. The algorithm results were compared to the simultaneously recorded ECG and respiration recordings of the PhysioNet/PhysioBank Fantasia database. An absolute average error of 6.8% was obtained, considered highly acceptable for ambulatory patient monitoring.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129512264","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: 15
Transcorneal digital stimulator development based on a PC based signal generator 基于PC机的数字刺激器的开发
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706672
M. Alfaro, L. Niño De Rivera, I. Chairez
{"title":"Transcorneal digital stimulator development based on a PC based signal generator","authors":"M. Alfaro, L. Niño De Rivera, I. Chairez","doi":"10.1109/CASME.2010.5706672","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706672","url":null,"abstract":"Optical diseases like retinitis pigmentosa and glaucoma (among others) are the main cause of partial or total blindness in humans. These diseases are typically treated by allopathic medicine and visual surgery. Recent studies show that partial recovery of sight can be produced by electrical stimulation. Most of the equipment used in these stimulation therapies only allows the generation of a single type of wave, are not portable and require the obligatory presence of the patient in the hospital. In this paper, a new multiple signal generator provided by a personal computer given the user the freedom to generate the waveform is proposed. Besides, the electro-stimulator transmits the signal wirelessly. The signal selection is done according to the patient therapy, providing an additional advantage: to adapt the stimulation according to the required therapy. Also it has been demonstrated the relationship between the signal produced by software in the generator and the signal sent by the stimulator. The stimulator was tested with a real sample of tissue. The correlation between two signals demonstrates the efficiency of the generator proposed in a wide range of amplitude, frequency and repetition.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132468942","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
Design and construction of irradiation system for photodynamic therapy with temperature control 具有温度控制的光动力治疗照射系统的设计与构建
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706670
F. Y. L. Silva, S. S. Isakina, J. M. de la Rosa Vázquez, J. C. Milan, E. R. Gallegos
{"title":"Design and construction of irradiation system for photodynamic therapy with temperature control","authors":"F. Y. L. Silva, S. S. Isakina, J. M. de la Rosa Vázquez, J. C. Milan, E. R. Gallegos","doi":"10.1109/CASME.2010.5706670","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706670","url":null,"abstract":"This paper presents the development of an irradiation system for photodynamic therapy with temperature control. The system allows the application of an optical radiation whose wavelength is 630nm, using light-emitting high power diodes. The developed system has a power control to irradiate the target tissue with an adequate power density. A temperature sensor is placed in the irradiated sample to control the temperature. And, the irradiation time is automated as well. The penetration and the scattering properties of the tissue were considered in the system design. Additionally, some partial results from irradiations performed on mice, with induced adenocarcinoma tumour will be shown.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"215 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131923998","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: 0
Development of a spectrofluorometer with USB interface for in vivo measurements in surgical procedures 用于外科手术中体内测量的带有USB接口的荧光分光计的研制
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706669
D. Fabila, J. M. de la Rosa, S. Stolik, E. Moreno, T. Lopez, M. Álvarez, A. Arellano, G. De La Rosa, R. Mercado, J. Soto
{"title":"Development of a spectrofluorometer with USB interface for in vivo measurements in surgical procedures","authors":"D. Fabila, J. M. de la Rosa, S. Stolik, E. Moreno, T. Lopez, M. Álvarez, A. Arellano, G. De La Rosa, R. Mercado, J. Soto","doi":"10.1109/CASME.2010.5706669","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706669","url":null,"abstract":"In this paper we present the development of a portable spectrofluorometer with USB interface for in vivo measurements in biological tissue. The equipment consists of a mini-spectrometer HR4000CG-UV-NIR, with a working range from 200 to 1100 nm with a resolution of 0.5 nm FWHM. As the excitation source a light emitting diode at 365 nm, with maximum radiant power of 200 mW was used. A bifurcated fiber optic (R200-UV/VIS) with six 200 µm diameter irradiation fibers and one 200 µm collection fiber is used. The system is powered and controlled with a laptop, avoiding the use of an external power supply. A program to select the light source, to process and measure spectra in real time was developed using the graphic language G of LabVIEW 8.2. Also, in this issue are presented in vivo measurements of diffuse reflection and fluorescence of non-neoplastic and neoplastic cerebral tissue of patients affected with glioblastoma multiform tumors (GBM).","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121870547","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
Cell biology and microsystems - what a combination 细胞生物学和微系统，多好的组合啊
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706683
F. Gruhl
{"title":"Cell biology and microsystems - what a combination","authors":"F. Gruhl","doi":"10.1109/CASME.2010.5706683","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706683","url":null,"abstract":"In medical and biotechnological research and utilization the importance of analyzing single cells or cell groups via non-destructive and contamination-free characterization increases. Special focus should be given on behavior and communication of cell-cell and cell-ECM interactions, especially in the case of cancer and stem cells. Traditional molecular biology techniques need lyses and fixation of cells and enable no observations of living cells. Microsystems give the opportunity to revolutionize analyses. This paper should give a short overview of existing systems combining microtechnology with cell biology research and future perspectives.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122625839","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
A review of low-noise amplifiers for neural applications 神经系统低噪声放大器的研究进展
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706688
J. Ruiz-Amaya, A. Rodríguez-Pérez, M. Delgado-Restituto
{"title":"A review of low-noise amplifiers for neural applications","authors":"J. Ruiz-Amaya, A. Rodríguez-Pérez, M. Delgado-Restituto","doi":"10.1109/CASME.2010.5706688","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706688","url":null,"abstract":"This paper presents a comparative study of three low-noise amplifiers for neural recording applications. The topologies are thoroughly analysed in terms of area, power consumption and noise performance. Further, the theoretical results are confirmed by simulations of transistor-level implementations in a 0.13µm CMOS technology at 1.2V supply voltage.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122770797","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: 8
Acquisition and processing of ERG signals ERG信号的采集与处理
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706676
C. Herrera, A. Moreno, K. Chavez, L. Niño De Rivera, V. Ponomaryov
{"title":"Acquisition and processing of ERG signals","authors":"C. Herrera, A. Moreno, K. Chavez, L. Niño De Rivera, V. Ponomaryov","doi":"10.1109/CASME.2010.5706676","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706676","url":null,"abstract":"This paper proposes a low cost acquisition and processing system for electrical biopotentials that can be obtained of the cornea (electroretinography, ERG), of the brain (electroencephalography, EEG) and of the heart (electrocardiography, ECG) to mention ones. This system is built with discrete circuits and has a minimum level of amplification of 60 dB and a maximum of 100 dB alike has a pass band Butterworth filter of 4th grade with a bandwidth of 0.16 to 300 Hz. For the signal's acquisition we used the sound card of the PC and through one program developed in MatLab, several techniques of filtered are applied in order to improve the signal and finally show it in a graph. This work shows biological signals acquired from the retina of a 24 years old man.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116257942","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: 0
4 channel signal based FPGA architecture for myolectric features extraction by H.O.S. 基于FPGA的4通道肌电特征提取
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706690
S. A. A. Diaz, A. D. Sánchez, Luis Abraham Sánchez Gaspariano, Apolo Z. Escudero Uribe
{"title":"4 channel signal based FPGA architecture for myolectric features extraction by H.O.S.","authors":"S. A. A. Diaz, A. D. Sánchez, Luis Abraham Sánchez Gaspariano, Apolo Z. Escudero Uribe","doi":"10.1109/CASME.2010.5706690","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706690","url":null,"abstract":"In this paper, an FPGA-based parallel architecture for the computation of myoelectric signal feature extraction, employing higher order statistics in presented. The three channels myoelectric signal is obtained directly from the user's muscles, in order to obtain prosthesis movement commands which emulate a biological elbow. The proposed architecture was realized in Very High Speed Integrated Circuit (BHSIC) by Hardware Description Language (VHDL), and functionally verified on a Xilinx board, which uses a Spartan-3 XC3S700AN FG48-4 FPGA. Experimental results are presented, and establish a maximum operation frequency of 44.570MHz.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121530292","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
CMOS inverters for ammonia/amine sensors 氨/胺传感器CMOS逆变器
2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME) Pub Date : 2010-12-01 DOI: 10.1109/CASME.2010.5706684
Noah J. Tremblay, H. Katz, P. Breysse
{"title":"CMOS inverters for ammonia/amine sensors","authors":"Noah J. Tremblay, H. Katz, P. Breysse","doi":"10.1109/CASME.2010.5706684","DOIUrl":"https://doi.org/10.1109/CASME.2010.5706684","url":null,"abstract":"When detecting an analyte with organic electronic materials, there may be two or more materials that provide different types of responses. These materials can be integrated into an inverter or amplifier device configuration to exploit a synergistic response for increased selectivity and/or sensitivity. The detection of ammonia and amines with p-type and n-type materials is one example of this principle.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133076545","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: 0
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