US 12,360,007 B2
Apparatus for collecting data on a mechancial apparatus
Shohei Hashizume, Kuwana (JP)
Assigned to NTN CORPORATION, Osaka (JP)
Appl. No. 17/626,417
Filed by NTN CORPORATION, Osaka (JP)
PCT Filed Mar. 24, 2020, PCT No. PCT/JP2020/013028
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/009973, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 2019-129900 (JP), filed on Jul. 12, 2019.
Prior Publication US 2022/0252482 A1, Aug. 11, 2022
Int. Cl. G01M 13/04 (2019.01)
CPC G01M 13/04 (2013.01) 10 Claims
OG exemplary drawing
 
1. A data collection apparatus that collects data on a mechanical apparatus, the data collection apparatus comprising:
an input portion to which a result of detection by a sensor that detects a state of the mechanical apparatus is provided; and
a controller configured to collect the result of detection by the sensor provided to the input portion in prescribed sampling cycles for storage, wherein
the controller changes the sampling cycle in accordance with the result of detection by the sensor provided to the input portion,
the mechanical apparatus includes a bearing apparatus including a bearing including an inner ring and an outer ring,
the sensor includes a first sensor that detects a heat flux in the bearing or in vicinity of the bearing based on a Seebeck effect,
the controller changes the sampling cycle in accordance with the result of detection by the first sensor,
when a magnitude of the result of detection by the first sensor collected in first cycles is larger than a corresponding switching threshold value, the controller changes the sampling cycle to a second cycle shorter than the first cycle and collects the result of detection by the first sensor in the second cycles, and
when a rate of change of the result of detection by the first sensor collected in the second cycles is larger than a corresponding judgment threshold value, the controller performs processing for preventing damage to the bearing apparatus.