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Patent Searching and Data


Title:
CLEANING DEVICE, IMAGING UNIT EQUIPPED WITH CLEANING DEVICE, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/004060
Kind Code:
A1
Abstract:
A cleaning device according to the present disclosure comprises: a protective cover (2) that is disposed in the field of view of a camera (5); a piezoelectric body (15) that oscillates the protective cover (2); a driver circuit (31) that drives the piezoelectric body (15); an oscillation sensor (70) that detects a signal pertaining to the oscillation level of the protective cover (2) oscillated by the piezoelectric body (15); and a PID control circuit (36) that controls the driver circuit (31) on the basis of the signal detected by the oscillation sensor (70). The PID control circuit (36) controls the driver circuit (31) such that the signal detected by the oscillation sensor (70) coincides with a pre-set target value for the oscillation level of the protective cover (2).

Inventors:
TAKATA MASAAKI (JP)
MIZUSHIMA YUZO (JP)
MORI TAKAAKI (JP)
Application Number:
PCT/JP2021/008976
Publication Date:
January 06, 2022
Filing Date:
March 08, 2021
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04N5/225; B08B7/02; H04N5/232
Domestic Patent References:
WO2018198465A12018-11-01
Foreign References:
JP2020519433A2020-07-02
JP2020501200A2020-01-16
US20130276627A12013-10-24
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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