公开(公告)号：US20130268229A1

公开(公告)日：2013-10-10

申请号：US13439487

申请日：2012-04-04

申请人： William J. Gleeson, III ,  Robert S. Wagoner ,  Neil W. Kunst

发明人： William J. Gleeson, III ,  Robert S. Wagoner ,  Neil W. Kunst

IPC分类号： G06F19/00

CPC分类号： G01R31/2849

摘要： A method is proposed for finding Fault-to-Failure signatures using ordered health states. A data matrix including reference values for a healthy device and degraded values for different degradation levels is processed to determine which data parameters, and more particularly which data parameter time windows, vary from the reference values both with an “order” and a “separation” consistent with ordered health states. The time sample at which a minimum gap between ordered health states is a maximum may determine the window end point. The window start point may be determined by walking back from the end point to the time sample at which the minimum gap crosses a threshold. In this manner, the time window starts when an acceptable order among the health states is first attained and ends when the separation is the strongest.

摘要翻译： 提出了一种使用有序健康状态查找故障到失败签名的方法。 处理包括健康设备的参考值和不同劣化水平的劣化值的数据矩阵，以确定哪些数据参数，更具体地，哪些数据参数时间窗口与“顺序”和“分离”两者的参考值不同， 符合有序健康状态。 有序健康状态之间的最小差距最大的时间样本可以确定窗口终点。 窗口起始点可以通过从终点走到最小间隙跨越阈值的时间样本来确定。 以这种方式，当首先获得健康状态之间的可接受的顺序时，时间窗开始，并且当分离最强时结束。

公开(公告)号：US5043659A

公开(公告)日：1991-08-27

申请号：US452185

申请日：1989-12-18

申请人： Donald A. Lowmiller ,  James D. Fraser ,  Neil W. Kunst

发明人： Donald A. Lowmiller ,  James D. Fraser ,  Neil W. Kunst

IPC分类号： G01P3/48

CPC分类号： G01P3/4807

摘要： An non-intrusive tachometer for measuring engine RPM includes a hand-held probe having an antenna for sensing radio frequency electromagnetic signals radiated from an operative spark ignition engine. The probe includes means for providing a pulse signal indicative of plug firing events to signal processing means which executes a statistical algorithm to determine the time between spark plug firings and engine RPM. A visual display displays engine RPM. Automatic gain contol means provides the pulse signal with a relatively constant amplitude by compensating for the inherently wide variation in amplitude of the electromagnetic signals among different automobile ignition systems. The signal processing means and display are located separate from the probe in an emissions testing system, or the signal processing means and display are integrated within the probe.

公开(公告)号：US5063515A

公开(公告)日：1991-11-05

申请号：US374026

申请日：1989-06-30

申请人： Neil W. Kunst ,  James D. Fraser ,  Josephina Amaro

发明人： Neil W. Kunst ,  James D. Fraser ,  Josephina Amaro

IPC分类号： F02P17/08

CPC分类号： F02P17/08

摘要： A vehicle ignition signal is sensed and digitized for subsequent display on a display device, the digitization comprising sampling the sensed signal at a number of predetermined time intervals, all shorter in duration than an interval determined by the display device resolution, to determine a signal transition to a maximum spark value, to determine the maximum spark value, and to determine the sample within each display resolution interval having the greatest absolute value displacement from that of the determined sample from the previous resolution interval, the determined sample and the maximum value sample being displayed on the display device.

摘要翻译： 车辆点火信号被感测并被数字化以便随后在显示设备上显示，数字化包括以预定的时间间隔对所感测的信号进行采样，其持续时间比由显示设备分辨率确定的间隔更短，以确定信号转换 以确定最大火花值，并且确定具有最大绝对值位移的显示分辨率间隔中的样本与来自先前分辨率间隔的确定样本位置的最大值，所确定的样本和最大值样本为 显示在显示设备上。