公开(公告)号：US20130044012A1

公开(公告)日：2013-02-21

申请号：US13583107

申请日：2011-03-04

Applicant: Ian J. Shaylor ,  David A. Clifton

Inventor： Ian J. Shaylor ,  David A. Clifton

IPC: H03M7/30

CPC classification number: H03M7/30

Abstract: A method and apparatus for data compression, particularly applicable to spectral signals such as Fast Fourier Transforms of vibration data. The data is merged to remove redundant frequencies when recorded at multiple sample rates, thresholded with respect to a noise floor to remove even more redundant data, and then the positions of non-zero signal values, with respect to the noise floor, are recorded in a first dataword and the non-zero signal values themselves are all recorded concatenated to form a second dataword. The compressed data set consists of the first and second datawords, together with the value of the noise floor, maximum original amplitude and the broadband power. In the event of successive data sets having the same or similar locations for non-zero signal values a re-use flag may be set and the locations dataword discarded. Preferably the signal values are non-linearly quantized to further reduce the amount of data.

Abstract translation: 一种用于数据压缩的方法和装置，特别适用于频谱信号，例如振动数据的快速傅里叶变换。 当以多个采样率记录时，合并数据以消除冗余频率，相对于本底噪声阈值，以消除更多的冗余数据，然后将非零信号值相对于本底噪声的位置记录在 第一数据字和非零信号值本身都被记录连接以形成第二数据字。 压缩数据集包括第一和第二数据字，以及本底噪声值，最大原始幅度和宽带功率的值。 在对于非零信号值具有相同或相似位置的连续数据集的情况下，可以设置重用标志并丢弃位置数据字。 优选地，信号值被非线性量化以进一步减少数据量。

公开(公告)号：US20120150491A1

公开(公告)日：2012-06-14

申请号：US13379196

申请日：2010-06-08

Applicant: Dongfeng Shi ,  Charles E. Dibsdale ,  Richard CT. Douglas ,  Toby Clarke ,  Peter A. Shone ,  William J. Puglia

Inventor： Dongfeng Shi ,  Charles E. Dibsdale ,  Richard CT. Douglas ,  Toby Clarke ,  Peter A. Shone ,  William J. Puglia

IPC: G06F15/00

CPC classification number: G07C3/00 ,  F05B2260/80 ,  G05B23/0235

Abstract: A method for managing machine operation comprising sensing a plurality of operational variables for a machine during use thereof so as to generate operational data for said variables. The operational data is processed so as to determine features within the operational data which are indicative of a divergence from a desired operational state of the machine. Confidence values associated with said features are determined and used to assess whether the plurality of features and associated confidence values are indicative of a predetermined diagnosis for said machine. A confidence value for said diagnosis is determined based upon the associated feature confidence values and used to generate a signal indicative of an operational state of the machine. The invention may be used for engine health monitoring applications and may be used for determining necessary servicing or repair work for the engine.

Abstract translation: 一种用于管理机器操作的方法，包括在使用期间感测机器的多个操作变量，以便生成用于所述变量的操作数据。 对操作数据进行处理，以便确定操作数据中的特征，其指示与机器的期望操作状态的偏离。 确定与所述特征相关联的置信度值并用于评估所述多个特征和相关联的置信度值是否表示所述机器的预定诊断。 基于相关联的特征置信度确定用于所述诊断的置信度值，并且用于产生指示机器的操作状态的信号。 本发明可用于发动机健康监测应用，并且可用于确定发动机的必要维修或维修工作。