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公开(公告)号：US20120095361A1
公开(公告)日：2012-04-19
申请号：US13227316
申请日：2011-09-07
申请人： Jiawei XU , Refet Firat Yazicioglu
发明人： Jiawei XU , Refet Firat Yazicioglu
CPC分类号： A61B5/04004 , A61B5/0428 , H03F3/45475 , H03F3/45928 , H03F2200/261 , H03F2203/45138
摘要： A multi-channel biopotential signal acquisition system is disclosed. In the system, a plurality of biopotential channels is corrected for common-mode interference. In one aspect, each biopotential channel includes an electrode for providing a biopotential input signal and an associated amplifier for amplifying the biopotential input signal and providing a biopotential output signal. The output signal is processed in a processor. Each biopotential output signal is passed to a common-mode feedback system, which determines an average common-mode signal and feeds that signal back to each of the amplifiers in each of the biopotential channels to enhance common-mode rejection ratio of the system.
摘要翻译： 公开了一种多通道生物电势信号采集系统。 在该系统中，针对共模干扰来校正多个生物电势通道。 在一个方面，每个生物电位通道包括用于提供生物电位输入信号的电极和用于放大生物电位输入信号并提供生物电位输出信号的相关放大器。 在处理器中处理输出信号。 每个生物电势输出信号被传递到共模反馈系统，该共模反馈系统确定平均共模信号，并将该信号反馈给每个生物电位通道中的每个放大器，以增强系统的共模抑制比。
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公开(公告)号：US08937509B2
公开(公告)日：2015-01-20
申请号：US13227316
申请日：2011-09-07
申请人： Jiawei Xu , Refet Firat Yazicioglu
发明人： Jiawei Xu , Refet Firat Yazicioglu
CPC分类号： A61B5/04004 , A61B5/0428 , H03F3/45475 , H03F3/45928 , H03F2200/261 , H03F2203/45138
摘要： A multi-channel biopotential signal acquisition system is disclosed. In the system, a plurality of biopotential channels is corrected for common-mode interference. In one aspect, each biopotential channel includes an electrode for providing a biopotential input signal and an associated amplifier for amplifying the biopotential input signal and providing a biopotential output signal. The output signal is processed in a processor. Each biopotential output signal is passed to a common-mode feedback system, which determines an average common-mode signal and feeds that signal back to each of the amplifiers in each of the biopotential channels to enhance common-mode rejection ratio of the system.
摘要翻译： 公开了一种多通道生物电势信号采集系统。 在该系统中，针对共模干扰来校正多个生物电势通道。 在一个方面，每个生物电位通道包括用于提供生物电位输入信号的电极和用于放大生物电位输入信号并提供生物电位输出信号的相关放大器。 在处理器中处理输出信号。 每个生物电势输出信号被传递到共模反馈系统，该共模反馈系统确定平均共模信号，并将该信号反馈给每个生物电位通道中的每个放大器，以增强系统的共模抑制比。
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公开(公告)号：US08755868B2
公开(公告)日：2014-06-17
申请号：US12882118
申请日：2010-09-14
IPC分类号： A61B5/04
CPC分类号： A61B5/0428 , A61B5/0456 , A61B5/7225 , A61B5/7232 , A61B5/7239 , A61B2560/0209
摘要： A method and apparatus is disclosed for adaptively sampling an analogue signal to increase the sampling rate in the presence of high frequency content within the signal, for example, QRS complex of an ECG signal. In one aspect, a change in a derivative of the analogue signal is used to control a voltage-controlled oscillator to provide a clock signal for an analogue-to-digital converter. The change in the derivative is compared to an automatically controlled threshold value. The clock signal controls the sampling rate of the analogue-to-digital converter so that the sampling rate is increased from one level, where only P and T waves are present to another higher level when the QRS complex has been detected.
摘要翻译： 公开了一种用于对模拟信号进行自适应采样以在存在信号内的高频内容（例如，ECG信号的QRS波形）的情况下增加采样率的方法和装置。 在一个方面，模拟信号的导数的改变用于控制压控振荡器以为模数转换器提供时钟信号。 将导数的变化与自动控制的阈值进行比较。 时钟信号控制模拟 - 数字转换器的采样率，使得采样率从一个级别增加，其中只有P和T波在检测到QRS波段时存在于另一个较高的电平。
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公开(公告)号：US08862210B2
公开(公告)日：2014-10-14
申请号：US12882120
申请日：2010-09-14
IPC分类号： A61B5/0402 , A61B5/04 , A61B5/053 , A61B5/0428 , A61B5/00 , G01R19/25 , A61B5/0476 , A61B5/0488
CPC分类号： A61B5/7225 , A61B5/04017 , A61B5/0402 , A61B5/0428 , A61B5/0476 , A61B5/0488 , A61B5/0531 , A61B5/7207 , A61B5/7221 , A61B5/7228 , A61B5/7232 , A61B5/7239 , G01R19/2509
摘要： An analog signal processor (ASP) application-specific integrated circuit (ASIC) is disclosed. The ACIS can be used for remotely monitoring ECG signals of a subject that has reduced power consumption. In one aspect, the ASIC performs the functions of: ECG signal extraction with high resolution using ECG readout channel, feature extraction using a band-power extraction channel, adaptive sampling the ECG signals using an adaptive sampling analog-to-digital converter, and impedance monitoring for signal integrity using an impedance monitoring channel. These functions enable the development of wireless ECG monitoring systems that have significantly lower power consumption but are more efficient that predecessor systems. In one embodiment, the ASP ASIC consumes 30 μW from a 2V supply with compression provided by adaptive sampling providing large reductions in power consumption of a wireless ECG monitoring system of which the ASP ASIC forms a part.
摘要翻译： 公开了一种模拟信号处理器（ASP）专用集成电路（ASIC）。 ACIS可用于远程监控具有降低功耗的对象的ECG信号。 在一个方面，ASIC执行以下功能：使用ECG读出通道具有高分辨率的ECG信号提取，使用带功率提取通道的特征提取，使用自适应采样模数转换器对ECG信号进行自适应采样，以及阻抗 使用阻抗监测通道监测信号完整性。 这些功能使得能够开发具有显着降低功耗的无线ECG监测系统，但是对于前一个系统而言更为有效。 在一个实施例中，ASP ASIC从具有通过自适应采样提供的压缩的2V电源消耗30μW，从而大大降低了ASP ASIC形成的无线ECG监测系统的功耗。
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5.发明授权Method and electronic medical device for simultaneously measuring an impedance and a biopotential signal 有权用于同时测量阻抗和生物电位信号的方法和电子医疗装置公开(公告)号：US08454505B2
公开(公告)日：2013-06-04
申请号：US12882126
申请日：2010-09-14
IPC分类号： A61B5/00
CPC分类号： A61B5/0531 , A61B5/04 , A61B5/0402 , A61B5/0428 , A61B5/0476 , A61B5/0488 , A61B5/7225 , G01R19/2509
摘要： A method and device is disclosed for continuously and simultaneously measuring an impedance signal and a biopotential signal on a biological subject's skin. In one aspect, the method includes attaching input and output electrodes to the biological subject's skin and applying a predetermined alternating current having a first frequency to the output electrodes for creating an alternating voltage signal over the input electrodes. The first frequency is above a predetermined minimum frequency. The method also includes measuring an input signal from the input electrodes which includes a biopotential signal and the alternating voltage signal. The method also includes extracting from the input signal the biopotential signal and the alternating voltage signal, and determining the impedance signal from the alternating voltage signal. The alternating voltage signal is extracted by amplifying and demodulating the input signal using a control signal having a frequency equal to the first frequency.
摘要翻译： 公开了用于连续并同时测量生物学对象皮肤上的阻抗信号和生物电位信号的方法和装置。 在一个方面，该方法包括将输入和输出电极附接到生物学对象的皮肤，并将具有第一频率的预定交流电施加到输出电极，以在输入电极上产生交流电压信号。 第一频率高于预定的最小频率。 该方法还包括测量来自输入电极的输入信号，其包括生物电位信号和交流电压信号。 该方法还包括从输入信号提取生物电位信号和交流电压信号，以及从交流电压信号确定阻抗信号。 通过使用具有等于第一频率的频率的控制信号来放大和解调输入信号来提取交流电压信号。
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6.发明申请METHOD AND ELECTRONIC MEDICAL DEVICE FOR SIMULTANEOUSLY MEASURING AN IMPEDANCE AND A BIOPOTENTIAL SIGNAL 有权用于同时测量阻抗和生物信号的方法和电子医疗设备公开(公告)号：US20110066054A1
公开(公告)日：2011-03-17
申请号：US12882126
申请日：2010-09-14
IPC分类号： A61B5/0402 , A61B5/053
CPC分类号： A61B5/0531 , A61B5/04 , A61B5/0402 , A61B5/0428 , A61B5/0476 , A61B5/0488 , A61B5/7225 , G01R19/2509
摘要： A method and device is disclosed for continuously and simultaneously measuring an impedance signal and a biopotential signal on a biological subject's skin. In one aspect, the method includes attaching input and output electrodes to the biological subject's skin and applying a predetermined alternating current having a first frequency to the output electrodes for creating an alternating voltage signal over the input electrodes. The first frequency is above a predetermined minimum frequency. The method also includes measuring an input signal from the input electrodes which includes a biopotential signal and the alternating voltage signal. The method also includes extracting from the input signal the biopotential signal and the alternating voltage signal, and determining the impedance signal from the alternating voltage signal. The alternating voltage signal is extracted by amplifying and demodulating the input signal using a control signal having a frequency equal to the first frequency.
摘要翻译： 公开了用于连续并同时测量生物学对象皮肤上的阻抗信号和生物电位信号的方法和装置。 在一个方面，该方法包括将输入和输出电极附接到生物学对象的皮肤，并将具有第一频率的预定交流电施加到输出电极，以在输入电极上产生交流电压信号。 第一频率高于预定的最小频率。 该方法还包括测量来自输入电极的输入信号，其包括生物电位信号和交流电压信号。 该方法还包括从输入信号提取生物电位信号和交流电压信号，以及从交流电压信号确定阻抗信号。 通过使用具有等于第一频率的频率的控制信号来放大和解调输入信号来提取交流电压信号。
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7.发明申请Large Time Constant Steering Circuit and Instrumentation Amplifier Implementing Same 有权大时间恒定转向电路和仪表放大器实现相同公开(公告)号：US20090195319A1
公开(公告)日：2009-08-06
申请号：US12362687
申请日：2009-01-30
CPC分类号： H03H1/02 , A61B5/0428 , A61B5/0476 , H03F3/387 , H03F3/45188 , H03F3/45475 , H03F3/45479 , H03F2200/261 , H03F2203/45136 , H03F2203/45424 , H03F2203/45438 , H03F2203/45441
摘要： The present invention relates to a large time constant steering circuit for slowly changing a voltage on a node between at least two discrete voltage levels. The present invention further relates to a slow steering current DAC comprising said large time constant steering circuit. The present invention further relates to an instrumentation amplifier device comprising a current balancing instrumentation amplifier for amplifying an input signal to an amplified output signal and a DC servo-loop for removing a DC-component from the input signal. The present invention further relates to an EEG acquisition ASIC comprising said instrumentation amplifier device.
摘要翻译： 本发明涉及一种用于在至少两个离散电压电平之间缓慢地改变节点上的电压的大时间常数转向电路。 本发明还涉及包括所述大时间常数转向电路的慢转向电流DAC。 本发明还涉及一种仪表放大器装置，其包括用于将输入信号放大到放大输出信号的电流平衡仪表放大器和用于从输入信号中去除DC分量的DC伺服环路。 本发明还涉及包括所述仪表放大器装置的EEG采集ASIC。
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8.发明授权Large time constant steering circuit and instrumentation amplifier implementing same 有权大时间恒定转向电路和仪表放大器实现相同公开(公告)号：US08466742B2
公开(公告)日：2013-06-18
申请号：US13035210
申请日：2011-02-25
IPC分类号： H03F3/68
CPC分类号： H03H1/02 , A61B5/0428 , A61B5/0476 , H03F3/387 , H03F3/45188 , H03F3/45475 , H03F3/45479 , H03F2200/261 , H03F2203/45136 , H03F2203/45424 , H03F2203/45438 , H03F2203/45441
摘要： The present invention relates to a large time constant steering circuit for slowly changing a voltage on a node between at least two discrete voltage levels. The present invention further relates to a slow steering current DAC comprising said large time constant steering circuit. The present invention further relates to an instrumentation amplifier device comprising a current balancing instrumentation amplifier for amplifying an input signal to an amplified output signal and a DC servo-loop for removing a DC-component from the input signal. The present invention further relates to an EEG acquisition ASIC comprising said instrumentation amplifier device.
摘要翻译： 本发明涉及一种用于在至少两个离散电压电平之间缓慢地改变节点上的电压的大时间常数转向电路。 本发明还涉及包括所述大时间常数转向电路的慢转向电流DAC。 本发明还涉及一种仪表放大器装置，其包括用于将输入信号放大到放大输出信号的电流平衡仪表放大器和用于从输入信号中去除DC分量的DC伺服环路。 本发明还涉及包括所述仪表放大器装置的EEG采集ASIC。
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9.发明申请Large Time Constant Steering Circuit and Instrumentation Amplifier Implementing Same 有权大时间恒定转向电路和仪表放大器实现相同公开(公告)号：US20110193623A1
公开(公告)日：2011-08-11
申请号：US13035210
申请日：2011-02-25
IPC分类号： H03F3/00
CPC分类号： H03H1/02 , A61B5/0428 , A61B5/0476 , H03F3/387 , H03F3/45188 , H03F3/45475 , H03F3/45479 , H03F2200/261 , H03F2203/45136 , H03F2203/45424 , H03F2203/45438 , H03F2203/45441
摘要： The present invention relates to a large time constant steering circuit for slowly changing a voltage on a node between at least two discrete voltage levels. The present invention further relates to a slow steering current DAC comprising said large time constant steering circuit. The present invention further relates to an instrumentation amplifier device comprising a current balancing instrumentation amplifier for amplifying an input signal to an amplified output signal and a DC servo-loop for removing a DC-component from the input signal. The present invention further relates to an EEG acquisition ASIC comprising said instrumentation amplifier device.
摘要翻译： 本发明涉及一种用于在至少两个离散电压电平之间缓慢地改变节点上的电压的大时间常数转向电路。 本发明还涉及包括所述大时间常数转向电路的慢转向电流DAC。 本发明还涉及一种仪表放大器装置，其包括用于将输入信号放大到放大输出信号的电流平衡仪表放大器和用于从输入信号中去除DC分量的DC伺服环路。 本发明还涉及包括所述仪表放大器装置的EEG采集ASIC。
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10.发明授权Large time constant steering circuit and instrumentation amplifier implementing same 有权大时间恒定转向电路和仪表放大器实现相同公开(公告)号：US07920005B2
公开(公告)日：2011-04-05
申请号：US12362687
申请日：2009-01-30
IPC分类号： H03H11/26
CPC分类号： H03H1/02 , A61B5/0428 , A61B5/0476 , H03F3/387 , H03F3/45188 , H03F3/45475 , H03F3/45479 , H03F2200/261 , H03F2203/45136 , H03F2203/45424 , H03F2203/45438 , H03F2203/45441
摘要： The present invention relates to a large time constant steering circuit for slowly changing a voltage on a node between at least two discrete voltage levels. The present invention further relates to a slow steering current DAC comprising said large time constant steering circuit. The present invention further relates to an instrumentation amplifier device comprising a current balancing instrumentation amplifier for amplifying an input signal to an amplified output signal and a DC servo-loop for removing a DC-component from the input signal. The present invention further relates to an EEG acquisition ASIC comprising said instrumentation amplifier device.
摘要翻译： 本发明涉及一种用于在至少两个离散电压电平之间缓慢地改变节点上的电压的大时间常数转向电路。 本发明还涉及包括所述大时间常数转向电路的慢转向电流DAC。 本发明还涉及一种仪表放大器装置，其包括用于将输入信号放大到放大输出信号的电流平衡仪表放大器和用于从输入信号中去除DC分量的DC伺服环路。 本发明还涉及包括所述仪表放大器装置的EEG采集ASIC。
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