Title:
KNOCKING SIGNAL PROCESSING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2022/038851
Kind Code:
A1
Abstract:
Provided are a device and a method for processing a knocking signal, which enable improvement in the accuracy of knocking signal measurement by minimizing variations among individual units without using an additional circuit. The knocking signal processing device can be mounted on a vehicle. The knocking signal processing device is provided with: a delta-sigma AD converter 20; a plurality of digital filters (digital filter processing unit 30) that have different frequency properties and that are each disposed at a stage subsequent to the delta-sigma AD converter 20; and a BGL signal output unit 11 or a correction signal output unit 10 for outputting a correction signal. The knocking signal processing device is configured so as to cause the output of the digital filter processing unit 30 to be varied depending on the correction signal.
Inventors:
KOJIMA SATOSHI (JP)
AKAGI YOSHIHIKO (JP)
MATOHARA SHINYA (JP)
TAKAHASHI HIRONORI (JP)
OKONOGI ATSUSHI (JP)
AKAGI YOSHIHIKO (JP)
MATOHARA SHINYA (JP)
TAKAHASHI HIRONORI (JP)
OKONOGI ATSUSHI (JP)
Application Number:
PCT/JP2021/019269
Publication Date:
February 24, 2022
Filing Date:
May 20, 2021
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F02D45/00; G01H17/00
Domestic Patent References:
| WO2017141582A1 | 2017-08-24 |
Foreign References:
| JP2018096255A | 2018-06-21 | |||
| JP2005299579A | 2005-10-27 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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