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    METHOD AND SYSTEM FOR MOTOR FAILURE DETECTION
    11.
    发明申请
    METHOD AND SYSTEM FOR MOTOR FAILURE DETECTION 审中-公开
    电机故障检测方法与系统

    公开(公告)号：US20150323605A1

    公开(公告)日：2015-11-12

    申请号：US14804771

    申请日：2015-07-21

    Applicant: ResMed Limited

    Inventor： Jeffrey Peter ARMITSTEAD ,  Dion Charles Chewe Martin ,  William Mcinnes Somerville

    IPC: G01R31/34 ,  A61M16/00 ,  F04B51/00

    CPC classification number: G01R31/34 ,  A61M16/00 ,  A61M16/0051 ,  A61M16/0066 ,  A61M16/024 ,  A61M2205/103 ,  A61M2205/3317 ,  A61M2205/3331 ,  A61M2205/3365 ,  A61M2205/3368 ,  A61M2205/702 ,  F04B51/00 ,  G01R31/343 ,  H02K11/20 ,  H02P29/02

    Abstract: Systems and methods for detecting developing faults in a flow generator or ventilator during therapeutic use thereof are provided. The motor current may be measured to estimate the torque input by the motor, while the output torque from the impeller may be determined (e.g., as inferred from the motor control system model and/or by consulting a lookup table). One or more transducers may collect data useful in determining the input and output torques. A difference between the input (to the motor) torque and the output (from the impeller) torque may be calculated. The difference, optionally filtered using a low-pass filter to reduce noise, may be compared to a predetermined threshold once or over a period of time to detect gross failures and/or developing failures. Once a failure or developing failure is detected, a user may be alerted and/or the flow generator may be placed into a “service required” mode.

    Abstract translation: 提供了用于在治疗使用期间检测流量发生器或呼吸机中的发展中故障的系统和方法。 可以测量电动机电流以估计由电动机输入的扭矩，而可以确定来自叶轮的输出扭矩（例如，从电动机控制系统模型推断和/或通过查询表）。 一个或多个换能器可以收集有用的确定输入和输出转矩的数据。 可以计算输入（电机）转矩和输出（从叶轮）转矩之间的差异。 可以使用低通滤波器任意滤波以减少噪声的差异可以与预定阈值进行一次或一段时间的比较，以检测总体故障和/或发展中的故障。 一旦检测到故障或发展中的故障，用户可能被警告和/或流量发生器可能被置于“所需服务”模式。

    Method and system for motor failure detection
    14.
    发明授权
    Method and system for motor failure detection 有权

    公开(公告)号：US10175300B2

    公开(公告)日：2019-01-08

    申请号：US14804771

    申请日：2015-07-21

    Applicant: ResMed Limited

    Inventor： Jeffrey Peter Armitstead ,  Dion Charles Chewe Martin ,  William Mcinnes Somerville

    IPC: G01R31/34 ,  H02K11/21 ,  A61M16/00 ,  F04B51/00 ,  H02P29/02 ,  H02K11/20

    Abstract: Systems and methods for detecting developing faults in a flow generator or ventilator during therapeutic use thereof are provided. The motor current may be measured to estimate the torque input by the motor, while the output torque from the impeller may be determined (e.g., as inferred from the motor control system model and/or by consulting a lookup table). One or more transducers may collect data useful in determining the input and output torques. A difference between the input (to the motor) torque and the output (from the impeller) torque may be calculated. The difference, optionally filtered using a low-pass filter to reduce noise, may be compared to a predetermined threshold once or over a period of time to detect gross failures and/or developing failures. Once a failure or developing failure is detected, a user may be alerted and/or the flow generator may be placed into a “service required” mode.

    METHODS, SYSTEMS AND APPARATUS FOR PACED BREATHING
    15.
    发明申请
    METHODS, SYSTEMS AND APPARATUS FOR PACED BREATHING 审中-公开

    公开(公告)号：US20170326314A1

    公开(公告)日：2017-11-16

    申请号：US15668171

    申请日：2017-08-03

    Applicant: ResMed Limited

    Inventor： Dion Charles Chewe Martin ,  David John Bassin

    IPC: A61M16/00 ,  A61M16/06 ,  A61M16/20 ,  A61M16/04

    CPC classification number: A61M16/0003 ,  A61M16/0069 ,  A61M16/026 ,  A61M16/0468 ,  A61M16/0672 ,  A61M16/202 ,  A61M16/204 ,  A61M2016/0018 ,  A61M2016/0036 ,  A61M2205/502 ,  A61M2230/06 ,  A61M2230/205 ,  A61M2230/42 ,  A61M2230/005

    Abstract: Methods, systems and/or apparatus for slowing a patient's breathing by using positive pressure therapy. In certain embodiments, a current interim breathing rate target is set, and periodically the magnitude of a variable pressure waveform that is scaled to the current interim breathing rate target is increased if the patient's breathing rate is greater than the interim breathing rate target in order to lengthen the patient's breath duration. The magnitude of the pressure increase may be a function of the difference between the interim breathing rate target and the patient's breathing rate. The interim breathing rate target may be periodically reduced in response to the patient's breathing rate slowing down toward the current interim breathing rate target. The variable pressure waveform cycles from an inhalation phase to an exhalation phase when the patient airflow decreases to a cycle threshold, the cycle threshold being a function of flow versus time within a breath and generally increasing with time. Different interim breathing rate targets have different cycle threshold functions, and the cycle threshold functions allow easier cycling as the interim breathing rate targets decrease. Similarly, the variable pressure waveform triggers from an exhalation phase to an inhalation phase when the patient airflow increases to a trigger threshold, the trigger threshold being a function of flow versus time within a breath and generally decreasing with time. Different interim breathing rate targets have different trigger threshold functions, and the trigger threshold functions allow easier triggering as the interim breathing rate targets decrease.

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