초록 ▼

A method and apparatus for compressing, storing and transmitting measurement data correlative to machine status is disclosed in which the measurement data is continuously sensed, sampled and processed to extract significant spectral elements including magnitude and phase information from each succes

A method and apparatus for compressing, storing and transmitting measurement data correlative to machine status is disclosed in which the measurement data is continuously sensed, sampled and processed to extract significant spectral elements including magnitude and phase information from each successive period of the originally measured data and to store those spectral elements in a memory means from an initial period of significant spectral elements and each successive period of significant spectral elements which have changed since the previous period for developing a compressed data history correlative to a continuous history of the status of the machine being monitored and from which continuous signals can be regenerated and analyzed for any earlier historical time.

대표청구항 ▼

[ I claim:] [1.] A signal processing method for processing machinery signals correlative to machine status, the steps including:sensing signals correlative to machine status;converting said signals into digital values;storing a series of said digital values into a packet defining a previously stored

[ I claim:] [1.] A signal processing method for processing machinery signals correlative to machine status, the steps including:sensing signals correlative to machine status;converting said signals into digital values;storing a series of said digital values into a packet defining a previously stored packet;comparing a subsequent packet of said digital values with said previously stored packet of said digital values;storing only said digital values included in said subsequent packet which are anomalous because they differ by a criteria from comparable digital values of said previously stored packet of said digital values;transmitting a signal correlative to said previously stored packet of digital values and to said subsequent packet of said digital values including flagging anomalous data in said subsequent packet of digital values.