| 摘要 |
PROBLEM TO BE SOLVED: To accurately obtain variation in tire air pressure before and after occurrence of a specific traveling state of a vehicle if the state occurs.SOLUTION: A tire air pressure monitoring device includes a tire sensor unit 10 disposed in each wheel 3 of a vehicle 1, a receiver unit 20 disposed in a vehicle body, and a detecting part for detecting a specific traveling state where the state related to the traveling of the vehicle 1 rapidly changes. When the specific traveling state is detected by the detecting part, each tire sensor unit 10 detects, immediately after the detection, the tire air pressure with a pressure sensor, and radio-transmits a signal including data showing the tire air pressure and a tire air pressure that is detected with the pressure sensor at least immediately before the detection of the specific traveling state and stored. The receiver unit 20 records a plurality of data segments included in the signal received immediately after the detection of the specific traveling state in a drive recorder device 2. |
