Sensor unit, control method, and non-transitory recording medium
AssigneeOMRON Corporation
InventorsHidekatsu Nogami, Yahiro Koezuka, Yoshimitsu Nakano, Arata Kataoka
Life of this patent
Estimating the term…
Abstract
In the disclosure, a failure of a device performing work while moving is more reliably detected while the data amount of failure diagnosis data is reduced. The disclosure includes a frequency analyzing part which performs a frequency analysis on acquired data from an acceleration sensor; a maximum frequency detecting part which detects a maximum frequency from a result of the frequency analysis; and a failure diagnosis data generating part which sets a frequency twice or more of the maximum frequency as a sampling frequency, samples the acquired data from the acceleration sensor, and generates the failure diagnosis data.
Claims10
A sensor unit, outputting failure diagnosis data for detecting a failure of a device performing work while moving, the sensor unit comprising:
- an acceleration sensor measuring acceleration related to the moving;
- a frequency analyzing part performing a frequency analysis on acquired data from the acceleration sensor;
- a maximum frequency detecting part detecting a maximum frequency which is the highest frequency among at least one type of frequency having a level not lower than a predetermined threshold from a result of the frequency analysis;
- and
- a failure diagnosis data generating part, setting a frequency twice or more of the maximum frequency as a sampling frequency, sampling the acquired data from the acceleration sensor, and generating the failure diagnosis data,
- wherein the frequency analyzing part stops the frequency analysis at a time when an absolute value of the acquired data from the acceleration sensor is not lower than a predetermined threshold.
A control method of a sensor unit comprising an acceleration sensor that measures acceleration related to moving of a device performing work while moving, and outputting failure diagnosis data for detecting a failure of the device, the method comprising:
- performing a frequency analysis on acquired data from the acceleration sensor;
- detecting a maximum frequency that is the highest frequency among at least one type of frequency having a level not lower than a predetermined threshold from a result of the frequency analysis;
- and
- setting a frequency twice or more of the maximum frequency as a sampling frequency, sampling the acquired data from the acceleration sensor, and generating the failure diagnosis data,
- wherein the frequency analysis is stopped at a time when an absolute value of the acquired data from the acceleration sensor is not lower than a predetermined threshold.
Dependencies are inferred from the claim text.