# US 2021/0333243 A1 · Detection device and diagnostic system

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- Number: US 2021/0333243 A1
- Document ID: US20210333243A1
- Status: Published application
- Kind: A1
- Application number: 17/238,547
- Filed: 2021-04-23
- Published: 2021-10-28
- Earliest claimed: 2020-04-28
- Assignees: KELK Ltd.
- Applicants: KELK Ltd.
- Inventors: Tomonori MURATA
- Web page: https://patentgrep.com/patent/US20210333243A1

## CPC

- G01N 29/46: by spectral analysis, e.g. Fourier analysis {or wavelet analysis (spectral signal processing per se G06F17/14)}
- 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 29/2431: {using other means for acoustic excitation, e.g. heat, microwaves, electron beams (sound producing devices not otherwise provided for G10K15/04)}
- G01N 2291/014: Resonance or resonant frequency
- G01N 2291/0258: Structural degradation, e.g. fatigue of composites, ageing of oils
- G01N 2291/2696: Wheels, Gears, Bearings
- 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

A detection device includes a vibration sensor configured to detect vibration of a machine, a calculation unit configured to perform FFT analysis on detection data of the vibration sensor, divide a specific frequency range into a plurality of frequency ranges, and calculate a partial overall value for each of the plurality of frequency ranges, and a wireless communication device configured to transmit the partial overall value.

## Claims

### Claim 1

A detection device comprising:
a vibration sensor configured to detect vibration of a machine;
a calculation unit configured to perform FFT analysis on detection data of the vibration sensor, divide a specific frequency range into a plurality of frequency ranges, and calculate a partial overall value for each of the plurality of frequency ranges; and
a wireless communication device configured to transmit the partial overall value.

### Claim 2 (depends on 1)

The detection device according to claim 1, wherein
the calculation unit calculates an overall value, an effective value, or a peak value of the detection data, and
the wireless communication device transmits the overall value, the effective value, or the peak value.

### Claim 3 (depends on 1)

The detection device according to claim 1, further comprising:
a thermoelectric generation module, wherein
the vibration sensor is driven by power generated by the thermoelectric generation module.

### Claim 4 (depends on 3)

The detection device according to claim 3, wherein
the thermoelectric generation module, the vibration sensor, and the wireless communication device are housed in a single housing.

### Claim 5 (depends on 1)

A diagnostic system comprising:
the detection device according to claim 1; and
a management computer configured to receive the partial overall value transmitted from the detection device to diagnose the machine.