Title:
センサ異常検出装置及び方法、分散型電源ユニット、及びコンピュータプログラム
Document Type and Number:
Japanese Patent JP7279364
Kind Code:
B2
Abstract:
To accurately determine whether an operation of a current sensor is normal or abnormal at a lower cost.SOLUTION: A sensor abnormality detection device for sensing an abnormality of a sensor attached to a cable in which AC current flows, used for control of a predetermined distributed power supply unit connected to the cable, comprises: a measurement circuit for measuring an effective current value of an output from the sensor; a limiting circuit for limiting an output from the distributed power supply unit so as to reduce a predetermined amount of power supplied from the distributed power supply unit to the cable when the effective current value of the output from the sensor measured by the measurement circuit is equal to or lower than a predetermined threshold; and a determination circuit for determining whether the sensor is abnormal depending on whether the effective current value measured by the measurement circuit is equal to or lower than the predetermined threshold after a first predetermined time has elapsed from the limitation of the output of the distributed power supply unit by the limiting circuit.SELECTED DRAWING: Figure 9
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Inventors:
Yui Yoshida
Tetsuo Akita
Tetsuo Akita
Application Number:
JP2019001747A
Publication Date:
May 23, 2023
Filing Date:
January 09, 2019
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
G01R31/00; H02H7/00
Domestic Patent References:
| JP2015089144A | ||||
| JP2018113732A | ||||
| JP2011160562A | ||||
| JP2015122819A |
Attorney, Agent or Firm:
Satoshi Shimizu
Tetsushi Kamidai
Naomi Jinno
Tetsushi Kamidai
Naomi Jinno
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