# US 11,906,471 B2 · Vibration analysis device, vibration analysis system, and vibration analysis method

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,906,471 B2
- Document ID: US11906471B2
- Status: Granted
- Kind: B2
- Application number: 17/572,888
- Filed: 2022-01-11
- Published: 2022-07-14
- Granted: 2024-02-20
- Earliest claimed: 2021-01-13
- Assignees: KELK Ltd.
- Applicants: KELK Ltd.
- Inventors: Tomonori Murata
- Web page: https://patentgrep.com/patent/US11906471B2

## CPC

- G01N 29/449: {Statistical methods not provided for in G01N29/4409, e.g. averaging, smoothing and interpolation}
- G01N 29/14: using acoustic emission techniques {(echo of particles G01N29/046; measuring mechanical vibrations or acoustic waves in solids in general G01H1/00)}
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

An analysis device includes a vibration sensor that detects vibration of a machine, a calculation unit that defines a peak value on the basis of a standard deviation of detection data of the vibration sensor, and a wireless communication device that transmits processed data output from calculation performed by the calculation unit.

## Claims

### Claim 1

An analysis device comprising:
a vibration sensor configured to detect vibration of a machine in a x-axis direction, a y-axis direction, and a z-axis direction;
a calculation unit, implemented using one or more computing devices, configured to determine a peak value based on a standard deviation of data including the detected vibration; and
a transceiver configured to transmit, to a management computer, processed data including the determined peak value to thereby cause the management computer to detect an abnormality in the machine based on the processed data including the determined peak value,
wherein the calculation unit is configured to determine, as the peak value, an average value of accelerations having absolute values greater than a value obtained by multiplying the standard deviation by a coefficient, with respect to the data including the detected vibration.

### Claim 2 (depends on 1)

The analysis device according to claim 1, wherein the calculation unit is configured to change the coefficient.

### Claim 3 (depends on 1)

The analysis device according to claim 1, further comprising a thermoelectric generator including a thermoelectric semiconductor,
wherein the vibration sensor is driven by power generated by the thermoelectric generator.

### Claim 4 (depends on 1)

The analysis device according to claim 1, wherein the processed data includes at least one of the peak value, an effective value, a frequency, an overall value, and a crest factor of the vibration of the machine based on the data including the detected vibration.

### Claim 5

An analysis method comprising:
acquiring, from a vibration sensor, data including detected vibration of a machine in a x-axis direction, a y-axis direction, and a z-axis direction;
determining a peak value, based on a standard deviation of the data including the detected vibration; and
transmitting, to a management computer, processed data including the determined peak value to thereby cause the management computer to detect an abnormality in the machine based on the processed data including the peak value,
wherein determining the peak value comprises:
determining, as the peak value, an average value of accelerations having absolute values greater than a value obtained by multiplying the standard deviation by a coefficient, with respect to the data including the detected vibration.

### Claim 6 (depends on 5)

The analysis method according to claim 5, further comprising:
driving the vibration sensor by power generated by a thermoelectric generator including a thermoelectric semiconductor.