# US 9,038,475 B2 · Detection of anomalous movement in a reciprocating device

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- Number: US 9,038,475 B2
- Document ID: US9038475B2
- Status: Granted
- Kind: B2
- Application number: 13/584,385
- Filed: 2012-08-13
- Published: 2012-12-06
- Granted: 2015-05-26
- Earliest claimed: 2009-07-30
- Assignees: General Electric Company
- Applicants: Brian F. Howard; Roger A. Hala; L John Kitchens, Jr.; Stephen Edward Plaisance
- Inventors: Brian F. Howard; Roger A. Hala; L John Kitchens, Jr.; Stephen Edward Plaisance
- Web page: https://patentgrep.com/patent/US9038475B2

## CPC

- G01H 11/00: Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES

## Abstract

One embodiment of the invention provides a system for identifying an anomalous movement of a reciprocating element in a reciprocating device, the system comprising: at least one sensing device for sensing a vibration signal of the reciprocating element; a processing apparatus for separating the vibration signal into a first component having a first frequency range and a second component having a second frequency range different than the first frequency range; and a device for at least one of analyzing or displaying at least one of the first or the second components of the vibration signal, wherein the vibration signal includes positional data of the reciprocating element along at least one axis of the reciprocating element.

## Claims

### Claim 1

A system for identifying an anomalous movement of a reciprocating element in a reciprocating device, the system comprising:
at least one sensing device for sensing a vibration signal of the reciprocating element;
a processing apparatus for separating the vibration signal into a first component having a first frequency range and a second component having a second frequency range different than the first frequency range; and
a device for at least one of analyzing or displaying at least one of the first or the second components of the vibration signal, wherein the vibration signal includes positional data of the reciprocating element along at least one axis of the reciprocating element.

### Claim 2 (depends on 1)

The system of claim 1, wherein the first frequency range is lower than the second frequency range.

### Claim 3 (depends on 1)

The system of claim 1, wherein the first frequency range and the second frequency range are substantially non-overlapping.

### Claim 4 (depends on 1)

The system of claim 1, wherein the device for at least one of analyzing or displaying is selected from a group consisting of:
a printing device, an electronic display, and a computing device having at least one of hardware or software for analyzing the vibration signal.

### Claim 5 (depends on 1)

The system of claim 1, wherein the processing apparatus is capable of separating the vibration signal into at least three components.

### Claim 6 (depends on 5)

The system of claim 5, wherein each of the at least three components has a frequency range different than the other of the at least three components.

### Claim 7 (depends on 6)

The system of claim 6, wherein the at least three frequency ranges are substantially non-overlapping.

### Claim 8 (depends on 1)

The system of claim 1, wherein the reciprocating device is selected from a group consisting of:
an engine, a pump, and a compressor.

### Claim 9

A system for identifying an anomalous movement of a reciprocating element in a reciprocating device, the system comprising:
a first sensing device for sensing a first component of a vibration signal of the reciprocating element, the first component having a first frequency range;
a second sensing device for sensing a second component of the vibration signal of the reciprocating element, the second component having a second frequency range different than the first frequency range; and
a device for at least one of analyzing or displaying at least one of the first and the second components of the vibration signal, wherein the vibration signal includes positional data of the reciprocating element along at least one axis of the reciprocating element.

### Claim 10 (depends on 9)

The system of claim 9, wherein the first frequency range is lower than the second frequency range.

### Claim 11 (depends on 9)

The system of claim 9, wherein the first frequency range and the second frequency range are substantially non-overlapping.

### Claim 12 (depends on 9)

The system of claim 9, wherein the device for at least one of analyzing or displaying is selected from a group consisting of:
a printing device, an electronic display, and a computing device having at least one of hardware or software for analyzing the vibration signal.

### Claim 13 (depends on 9)

The system of claim 9, wherein the reciprocating device is selected from a group consisting of:
an engine, a pump, and a compressor.

### Claim 14

A reciprocating device comprising:
a reciprocating element;
at least one non-reciprocating element through which the reciprocating element passes; and
at least one sensing device for sensing a vibration signal of the reciprocating element, wherein at least a portion of the at least one sensing device is located within the at least one non-reciprocating element and the vibration signal includes positional data of the reciprocating element along at least one axis of the reciprocating element.