Title:
WIPER VIBRATION MEASURING DEVICE AND WIPER VIBRATION MEASURING METHOD
Document Type and Number:
Japanese Patent JP2023092141
Kind Code:
A
Abstract:
To provide a wiper vibration measuring device and a wiper vibration measuring method with which it is possible to easily measure the minute vibration of a wiper during wiping operation.SOLUTION: A coordinate data list obtained by linking a pixel coordinate of an end part Wbx of a wiper blade Wb which is displaced at every time is acquired from moving-image data Da including a wiper W1 in an operating state. Next, a pixel coordinate position in the coordinate data list is converted to a position on a circular arc wiping locus of the wiper blade Wb. Then, a temporal change of the position on the wiping locus is frequency-analyzed, and a measurement result of a minute vibration that may occur during wiping operation of the wiper W1 is obtained. A series of image processing can be coped with by installing an easily available, easily handleable open source function program to a terminal 23 for measurement. That is, the minute vibration can be easily measured by capturing a moving-image of the wiper W1 which performs wiping operation by a familiar camera 21 and processing the image by the open source function program.SELECTED DRAWING: Figure 2
Inventors:
MARUCHI KATSUYA
OTA SHUNSAKU
OTA SHUNSAKU
Application Number:
JP2021207154A
Publication Date:
July 03, 2023
Filing Date:
December 21, 2021
Export Citation:
Assignee:
DENSO CORP
International Classes:
G01H17/00; G01M17/00; G06T7/246
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda