Title:
ABNORMALITY DETECTION DEVICE FOR ACCELERATION SENSOR
Document Type and Number:
WIPO Patent Application WO/2019/181346
Kind Code:
A1
Abstract:
This abnormality detection device (1) for an acceleration sensor (A) detects an abnormality in an acceleration sensor (A) comprising: a pendulum (10) having a weight (10a); a displacement detector (11) for detecting displacement of the weight (10a); a coil (12) that is attached to the weight (10a) and is capable of, when energized, applying a force for stopping the weight (10a); a servo amplifier (13) for outputting a current capable of stopping the weight (10a) to the coil (12) in accordance with the signal from the displacement detector (11); a first resistor (R1) connected in parallel with the coil (12); and a second resistor (R2) connected in series with the coil (12) and first resistor (R1). The abnormality detection device (1) detects an abnormality on the basis of a first output (S1) that is the voltage between the first resistor (R1) and second resistor (R2) and a second output (S2) that is a voltage at a position closer to the servo amplifier (13) than the first resistor (R1).
Inventors:
IMAI SHUICHI (JP)
KOBAYASHI MASAYUKI (JP)
KOBAYASHI MASAYUKI (JP)
Application Number:
PCT/JP2019/006483
Publication Date:
September 26, 2019
Filing Date:
February 21, 2019
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
G01P21/00; G01P15/13
Foreign References:
| JP2012112695A | 2012-06-14 | |||
| JP2010236992A | 2010-10-21 | |||
| JP2005300231A | 2005-10-27 | |||
| JPH09281248A | 1997-10-31 | |||
| US4651075A | 1987-03-17 | |||
| JPS60233565A | 1985-11-20 |
Attorney, Agent or Firm:
ISHIKAWA Ken (JP)
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