Title:
BEARING WITH SENSOR
Document Type and Number:
Japanese Patent JP2018189125
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a bearing with a sensor that can suppress a possibility that the sensor operates not normally.SOLUTION: A bearing with a sensor comprises the sensor, an electric power generator, and a power circuit which outputs electric power generated by the electric power generator to the sensor. The power circuit comprises: a step-up circuit; a step-down circuit; a decoupling capacitor connected between a step-down voltage and a reference potential; a transistor having its source-drain path inserted into a low potential-side output line or high potential-side output line; and a step-up voltage threshold comparison part which outputs a signal for controlling the transistor into an ON state to the gate of the transistor when the step-up voltage is equal to or larger than the step-up voltage threshold, and also outputs a signal for controlling the transistor into an OFF state to the gate of the transistor when the step-up voltage is smaller than the step-up voltage threshold.SELECTED DRAWING: Figure 9
Inventors:
OKAMURA TOSHIHIKO
YANAGISAWA TOMOYUKI
KOBAYASHI HIDEKI
YANAGISAWA TOMOYUKI
KOBAYASHI HIDEKI
Application Number:
JP2017090430A
Publication Date:
November 29, 2018
Filing Date:
April 28, 2017
Export Citation:
Assignee:
NSK LTD
International Classes:
F16C41/00; G05F1/67; H02M3/155
Domestic Patent References:
| JPH1042553A | 1998-02-13 | |||
| JPH1098872A | 1998-04-14 | |||
| JPH09149631A | 1997-06-06 | |||
| JP2007249812A | 2007-09-27 | |||
| JP2009240025A | 2009-10-15 | |||
| JP2003269477A | 2003-09-25 |
Attorney, Agent or Firm:
Sakai International Patent Office