Title:
TIRE PNEUMATIC PRESSURE MONITORING SYSTEM AND TIRE PNEUMATIC PRESSURE MONITORING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/080221
Kind Code:
A1
Abstract:
The present invention comprises: a data acquisition unit (101) that acquires tire pneumatic pressure data at regular detection periods; a storage unit (102) that stores newly acquired pneumatic pressure data P(0) and pneumatic pressure data P(1) to P(N) acquired before 1 to N periods from the pneumatic pressure data P(0); a determination unit that determines a state of a decrease in pneumatic pressure on the basis of the pneumatic pressure data; and a communication unit (transmitter 150) that transmits the determination result of the determination unit to an external device, wherein the determination unit compares the pneumatic pressure data P(1) to P(N) with the pneumatic pressure data P(0) to calculate a reduction value, compares the reduction value with a preset first threshold (th1), and determines that the tire pneumatic pressure is reduced when at least one reduction value is equal to or greater than the first threshold value.
Inventors:
ICHIKAWA HIROMITSU
FUKUMORI HAJIME
FUKUMORI HAJIME
Application Number:
PCT/JP2021/037098
Publication Date:
April 21, 2022
Filing Date:
October 07, 2021
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C23/04
Domestic Patent References:
| WO2016103453A1 | 2016-06-30 |
Foreign References:
| JP2006168457A | 2006-06-29 | |||
| JP2006071642A | 2006-03-16 | |||
| JP2012171464A | 2012-09-10 | |||
| JP2017087941A | 2017-05-25 | |||
| US20150091720A1 | 2015-04-02 | |||
| JP2012171463A | 2012-09-10 |
Other References:
See also references of EP 4230442A4
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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