公开(公告)号：US20170007186A1

公开(公告)日：2017-01-12

申请号：US14795703

申请日：2015-07-09

Applicant: QUALCOMM Incorporated

Inventor： David Boettcher Baek ,  Donald Bernard Lemersal ,  Lars Lading

IPC: A61B5/00 ,  A61B5/053

CPC classification number: A61B5/725 ,  A61B5/021 ,  A61B5/0295 ,  A61B5/053 ,  A61B5/0535 ,  A61B5/6801 ,  A61B5/6825 ,  A61B5/7225 ,  A61B2560/0214 ,  A61B2562/04

Abstract: This disclosure provides systems, methods and apparatus for performing signal processing in impedance sensing applications, and more specifically, for recovering data from an amplitude-modulated signal. In one aspect, a device includes a sensing circuit operable to sense an amplitude-modulated signal having a carrier frequency. The device also includes a mixer operable to mix the amplitude-modulated signal with a mixing signal having a mixing frequency to provide a frequency-downshifted signal having an intermediate frequency less than the carrier frequency. The device also includes a filter operable to filter the frequency-downshifted signal to provide a filtered signal. The device further includes a sampler operable to undersample the filtered signal at an undersampling frequency to provide a digital signal, the digital signal being representative of a modulating signal.

Abstract translation: 本公开提供了用于在阻抗感测应用中执行信号处理的系统，方法和装置，更具体地，用于从幅度调制信号恢复数据。 一方面，一种设备包括感测电路，其可操作以感测具有载波频率的幅度调制信号。 该装置还包括可操作以将调幅信号与混频信号混合的混频器，以提供具有小于载频的中频的降频转换信号。 该装置还包括可用于对降频转换信号进行滤波以提供滤波信号的滤波器。 该装置还包括采样器，其可操作以在欠采样频率下对经滤波的信号进行欠采样以提供数字信号，数字信号代表调制信号。

公开(公告)号：US20150327784A1

公开(公告)日：2015-11-19

申请号：US14714776

申请日：2015-05-18

Applicant: QUALCOMM Incorporated

Inventor： Lars Lading ,  David Boettcher Baek

IPC: A61B5/021 ,  A61B5/11 ,  A61B5/00

CPC classification number: A61B5/02108 ,  A61B5/0059 ,  A61B5/0082 ,  A61B5/02007 ,  A61B5/021 ,  A61B5/02116 ,  A61B5/053 ,  A61B5/0535 ,  A61B5/1075 ,  A61B5/1126 ,  A61B5/6898 ,  A61B5/725 ,  A61B5/726 ,  A61B5/7275 ,  A61B5/7278 ,  A61B5/7282 ,  A61B5/7285 ,  A61B8/04 ,  A61B2560/0223 ,  A61B2560/0238 ,  A61B2560/0242 ,  A61B2560/0247 ,  A61B2562/0214 ,  A61B2562/0219

Abstract: Systems, methods, and devices of various embodiments enable measurement of blood pressure from an artery. The various embodiments may measure, using a non-interfering arterial measurement sensor, a first change in distension of the artery at a measurement location without interference to an arterial pressure at the measurement location during a series of pulses. A first pulse rate and estimated pulse pressures may be determined from the first change in distension. A coefficient may be determined fitting an exponentially decaying function representing an exponential decay of a portion of a diastolic phase to select ones of the estimated pulse pressures corresponding to the diastolic phase. An absolute blood pressure may be determined by applying the coefficient to a select mathematical model expressing a first relationship between the first change in distension of the artery and the pulse pressure in the artery at the measurement location.

Abstract translation: 各种实施例的系统，方法和装置能够测量来自动脉的血压。 各种实施例可以使用非干扰性动脉测量传感器在一系列脉冲期间测量动脉在测量位置处的扩张的第一变化，而不干扰测量位置处的动脉压。 可以从膨胀的第一变化确定第一脉搏率和估计的脉搏压力。 可以确定系数，其适合表示舒张期的一部分的指数衰减的指数衰减函数，以选择与舒张期相对应的估计脉冲压。 可以通过将系数应用于表示动脉扩张的第一变化与测量位置的动脉中的脉压之间的第一关系的选择数学模型来确定绝对血压。