Title:
PHYSICAL QUANTITY DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/057513
Kind Code:
A1
Abstract:
Provided is a physical quantity detection device capable of achieving low current consumption through control of an energization method even during a ground-contact period. A physical quantity detection device 2 according to the present invention is characterized by: extracting a stepping-in peak value 43 of strain generated at stepping-in time Pa when a strain detection area 10a of a tire 10 comes into ground-contact with a road surface 30, and an intermediate time-point peak value 42 of strain generated at an intermediate time point Pb between the stepping-in time and kicking-out time when the strain detection area of the tire moves away from the road surface; calculating the cycle of subsequent generations of stepping-in peak values and intermediate time peak values from a time difference t between the stepping-in peak value and the intermediate time-point peak value or inclination of a strain change; and energizing a strain detection unit 3 in accordance with the cycle.
Inventors:
HOSOKAWA TAKEO (JP)
YUKI FUMIO (JP)
SOMA ATSUO (JP)
YUKI FUMIO (JP)
SOMA ATSUO (JP)
Application Number:
PCT/JP2022/034691
Publication Date:
March 21, 2024
Filing Date:
September 16, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
G01L5/00
Domestic Patent References:
| WO2019142869A1 | 2019-07-25 |
Foreign References:
| JP2022520499A | 2022-03-30 | |||
| US20160303928A1 | 2016-10-20 | |||
| JP2015217713A | 2015-12-07 | |||
| JP2009248783A | 2009-10-29 | |||
| JP2005088662A | 2005-04-07 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
Download PDF:
Previous Patent: SQUARE WASHER AND FASTENING STRUCTURE
Next Patent: RADIOACTIVITY ANALYSIS DEVICE AND RADIOACTIVITY ANALYSIS METHOD
Next Patent: RADIOACTIVITY ANALYSIS DEVICE AND RADIOACTIVITY ANALYSIS METHOD