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    • 13. 发明授权
    • Rotating machinery condition monitoring using position sensor
    • 使用位置传感器进行旋转机械状态监控
    • US08810173B2
    • 2014-08-19
    • US12948951
    • 2010-11-18
    • Linglai LiWei QianThomas D. Lundell
    • Linglai LiWei QianThomas D. Lundell
    • H02P6/16
    • H02P29/0241
    • Continuous monitoring and fault diagnosis of rotating machinery during variable speed operation is performed using only a position feedback signal. The position sensor generates a periodic waveform having multiple pulses per revolution of the machine. A circuit is included to detect, for example, a zero crossing or edge of the periodic waveform. At each detected zero crossing or edge, the time and position of the event is stored in memory. Other data, such as the current in the motor, may also be sampled and stored in memory. Because the sampled data is triggered by repeated feature of the position feedback signal, the sampled data is in a stationary reference frame in the position domain. Frequency analysis is performed on the sampled data, and the frequency components present in either the sampled signal are analyzed to identify the presence of a fault in the rotating machinery.
    • 只能使用位置反馈信号,进行变速运转时旋转机械的连续监控和故障诊断。 位置传感器产生每单位具有多个脉冲的周期性波形。 包括电路以检测例如周期性波形的过零或边缘。 在每个检测到的零交叉或边缘,事件的时间和位置存储在存储器中。 其他数据,例如电动机中的电流也可以被采样并存储在存储器中。 由于采样数据由位置反馈信号的重复特征触发,采样数据位于位置域中的静止参考帧。 对采样数据进行频率分析,并分析存在于采样信号中的频率分量,以识别旋转机械中故障的存在。
    • 15. 发明申请
    • Optical device having light sensor with doped regions
    • 具有掺杂区域的光传感器的光学装置
    • US20130020668A1
    • 2013-01-24
    • US13507468
    • 2012-06-28
    • Wei QianDazeng FengMehdi Asghari
    • Wei QianDazeng FengMehdi Asghari
    • H01L31/0232
    • G02B6/12004G02B6/131G02B2006/12061G02B2006/12176
    • The optical device includes a waveguide on a base. The waveguide is configured to guide a light signal through a light-transmitting medium to a light sensor. The light sensor includes a sensor waveguide on the base. The sensor waveguide receives the light signal from the input waveguide. Additionally, the sensor waveguide includes a light-absorbing medium having an input side. The input side is interfaced with the light-transmitting medium such that at least a portion of the light signal received by the sensor waveguide travels through the input side of the light-absorbing medium upon being received by the sensor waveguide. The light-absorbing medium includes doped regions. One or more of the doped regions each extends from within the light-absorbing medium to the input side of the light-absorbing medium.
    • 光学器件包括在基底上的波导。 波导被配置为将光信号通过光传输介质引导到光传感器。 光传感器包括在基座上的传感器波导。 传感器波导接收来自输入波导的光信号。 另外,传感器波导包括具有输入侧的光吸收介质。 输入侧与光传输介质接口,使得由传感器波导接收的光信号的至少一部分在被传感器波导接收时行进通过光吸收介质的输入侧。 光吸收介质包括掺杂区域。 一个或多个掺杂区域各自从光吸收介质延伸到光吸收介质的输入侧。
    • 16. 发明授权
    • Computer-aided pathological diagnosis system
    • 计算机辅助病理诊断系统
    • US08077958B2
    • 2011-12-13
    • US11772288
    • 2007-07-02
    • Wei QianDansheng SongTatyana A. Zhukov
    • Wei QianDansheng SongTatyana A. Zhukov
    • G06K9/00
    • G06T7/0012G06K9/0014G06K9/00147G06T2207/30024G06T2207/30061
    • The present invention is a computer-aided pathological diagnosis method for the classification of cancer cells in a tissue specimen based on a digital cellular image of the tissue specimen. The method of the present invention includes the steps of, extracting the histological characteristic features of the cellular image using preprocessing algorithms having adaptive strategies to enhance the cellular image, declustering the extracted histological characteristic features of the cellular image to isolate the individual cells and the nuclei inside the cells, segmenting the declustered cellular image, labeling the segmented cellular image and classifying the cells in the labeled cellular image as cancer cells or non-cancer cells.
    • 本发明是一种计算机辅助病理诊断方法,用于根据组织标本的数字细胞图像对组织标本中的癌细胞进行分类。 本发明的方法包括以下步骤:使用具有增强细胞图像的自适应策略的预处理算法来提取细胞图像的组织学特征,对提取的细胞图像的组织学特征进行分解以分离各个细胞和细胞核 在细胞内,分割去分解的细胞图像,标记分割的细胞图像并将标记的细胞图像中的细胞分类为癌细胞或非癌细胞。
    • 17. 发明授权
    • System and method for controlling input line harmonics in a motor drive
    • 用于控制电机驱动器中输入线谐波的系统和方法
    • US07728544B2
    • 2010-06-01
    • US11745861
    • 2007-05-08
    • Wei QianQiang YinLixiang WeiRichard A. Lukaszewski
    • Wei QianQiang YinLixiang WeiRichard A. Lukaszewski
    • H02P27/04
    • H02M1/126H02M1/44H02P27/16
    • A motor drive system is disclosed that includes a power input configured to receive alternating current (AC) power and a rectifier having a switching frequency selected to convert the AC power to direct current (DC) power. The motor drive unit also includes an input filter circuit connected between the power input and the rectifier and configured to suppress frequency harmonics across a range of harmonics. Additionally, the motor drive unit includes a block filter circuit connected between the power input and the rectifier and configured to substantially block frequency harmonics associated with the switching frequency of the rectifier. Furthermore, the motor drive unit includes an inverter configured to receive the DC power from the rectifier and convert the DC power to a series of pulses configured to drive a motor.
    • 公开了一种电动机驱动系统,其包括被配置为接收交流(AC)电力的功率输入和具有选择的开关频率的整流器,以将AC功率转换为直流(DC)功率。 马达驱动单元还包括连接在功率输入和整流器之间的输入滤波器电路,并被配置为抑制跨越谐波范围的频率谐波。 此外,电动机驱动单元包括连接在电力输入和整流器之间的块滤波器电路,并被配置为基本上阻挡与整流器的开关频率相关联的频率谐波。 此外,马达驱动单元包括反相器,其被配置为从整流器接收DC电力并将DC电力转换成被配置为驱动马达的一系列脉冲。
    • 18. 发明申请
    • Method and System for Inductive Proximity Sensing that Includes Mounting Effect Compensation
    • 包括安装效果补偿的感应接近感测方法和系统
    • US20100060270A1
    • 2010-03-11
    • US12207737
    • 2008-09-10
    • Xiaofeng GongWei QianWeihua Chen
    • Xiaofeng GongWei QianWeihua Chen
    • G01B7/00
    • H03K17/952H03K17/9502H03K17/954H03K2217/94031
    • An inductive proximity sensor and related method for sensing a presence/position of a target, with mounting effect compensation, are disclosed. In at least one embodiment, the method includes providing a proximity sensor having first and second coils that are both at least indirectly in communication with control circuitry. The method also includes receiving respective first and second signals at least indirectly indicative of respective first and second electromagnetic field components respectively experienced by the first coil as influenced both by a target and a structure supporting the sensor and the second coil as influenced by the supporting structure. The method further includes determining by way of the circuitry a third signal based at least in part upon the first signal, as modified based at least in part upon the second signal, whereby the third signal is indicative of the presence or position of the target relative to the sensor.
    • 公开了一种用于感测目标的存在/位置的感应式接近传感器和相关方法,具有安装效果补偿。 在至少一个实施例中,该方法包括提供具有至少间接地与控制电路通信的第一和第二线圈的接近传感器。 该方法还包括接收相应的第一和第二信号,至少间接地指示由第一线圈经历的相应的第一和第二电磁场分量,受到目标和支撑传感器和第二线圈的结构的影响,受支撑结构的影响 。 该方法还包括至少部分地基于第一信号通过电路确定第三信号,至少部分地基于第二信号进行修改,由此第三信号指示目标相对的存在或位置 到传感器。
    • 19. 发明申请
    • System and Method for Controlling Input Line Harmonics in a Motor Drive
    • 控制电机驱动输入线谐波的系统和方法
    • US20080278109A1
    • 2008-11-13
    • US11745861
    • 2007-05-08
    • Wei QianQiang YinLixiang WeiRichard A. Lukaszewski
    • Wei QianQiang YinLixiang WeiRichard A. Lukaszewski
    • H02P27/04H02P27/00
    • H02M1/126H02M1/44H02P27/16
    • A motor drive system is disclosed that includes a power input configured to receive alternating current (AC) power and a rectifier having a switching frequency selected to convert the AC power to direct current (DC) power. The motor drive unit also includes an input filter circuit connected between the power input and the rectifier and configured to suppress frequency harmonics across a range of harmonics. Additionally the motor drive unit includes a block filter circuit connected between the power input and the rectifier and configured to substantially block frequency harmonics associated with the switching frequency of the rectifier. Furthermore, the motor drive unit includes an inverter configured to receive the DC power from the rectifier and convert the DC power to a series of pulses configured to drive a motor.
    • 公开了一种电动机驱动系统,其包括被配置为接收交流(AC)电力的功率输入和具有选择的开关频率的整流器,以将AC功率转换为直流(DC)功率。 马达驱动单元还包括连接在功率输入和整流器之间的输入滤波器电路,并被配置为抑制跨越谐波范围的频率谐波。 另外,电动机驱动单元包括连接在电力输入和整流器之间的块滤波器电路,并被配置为基本上阻挡与整流器的开关频率相关联的频率谐波。 此外,马达驱动单元包括反相器,其被配置为从整流器接收DC电力并将DC电力转换成被配置为驱动马达的一系列脉冲。
    • 20. 发明申请
    • INDUCTION MOTOR ANALYSIS AND CONTROL METHOD
    • 感应电动机分析与控制方法
    • US20080203954A1
    • 2008-08-28
    • US12039602
    • 2008-02-28
    • Wei QianHaihui LuThomas A. Nondahl
    • Wei QianHaihui LuThomas A. Nondahl
    • G01R27/02G01R27/08G01R27/26
    • H02P23/14H02P27/16Y10S388/917
    • An induction motor controller that may include three phase paths leading from a power input to a power output, a solid-state switching device interposed between the power input and the power output on each of the three phase paths, a voltage sensor coupled to two of the phase paths between the solid-state switching device and the power input, a current sensor on one of the phase paths, a processor communicatively coupled to the voltage sensor, the current sensor, and the solid state switching device; and a memory coupled to the processor. The processor may be configured to calculate a motor parameter based on a signal from the voltage sensor and a signal from the current sensor and store the calculated motor parameter in memory.
    • 一种感应电动机控制器,其可以包括从电力输入到功率输出的三相路径,插在电源输入端和三相路径中的每一个上的功率输出端之间的固态开关装置, 固态开关器件和功率输入之间的相位路径,在一个相位路径上的电流传感器,通信地耦合到电压传感器,电流传感器和固态开关器件的处理器; 以及耦合到处理器的存储器。 处理器可以被配置为基于来自电压传感器的信号和来自电流传感器的信号来计算电动机参数,并将计算的电动机参数存储在存储器中。