Title:
ELEVATOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2018154429
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce the work load of a maintenance engineer by using a smoothing capacitor up to its appropriate life and to address an abnormality by announcing before breakage.SOLUTION: This elevator control device is provided with: a current voltage detection unit 21; a change rate detection unit 22; a charging/discharging rate detection unit 23; an abnormality determination unit 24; and an announcement unit 25. The current voltage detection unit 21 detects a current value or a voltage value of a smoothing capacitor 12 at the time of activating or stopping an elevator. The change rate detection unit 22 detects the change rate of the current value or the voltage value of the smoothing capacitor 12. The charging/discharging rate detection unit 23 detects the charging/discharging counts of the smoothing capacitor 12. The abnormality determination unit 24 determines the abnormality of the smoothing capacitor 12 on the basis of the change rate of the current value/voltage value and the charging/discharging counts. The announcement unit 25 announces that the smoothing capacitor 12 is in an abnormal state.SELECTED DRAWING: Figure 1
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Inventors:
NOJIMA SHUICHI
Application Number:
JP2017051378A
Publication Date:
October 04, 2018
Filing Date:
March 16, 2017
Export Citation:
Assignee:
TOSHIBA ELEVATOR CO LTD
International Classes:
B66B5/02; B66B1/34; B66B3/00
Domestic Patent References:
| JP2010006568A | 2010-01-14 | |||
| JP2007207585A | 2007-08-16 | |||
| JP2007318872A | 2007-12-06 | |||
| JPH08157152A | 1996-06-18 | |||
| JPH07222436A | 1995-08-18 |
Foreign References:
| WO2010019123A1 | 2010-02-18 |
Attorney, Agent or Firm:
Suzue International Patent Office