Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 05, 2021 - September 08, 2021
In recent years, various problems have occurred with the spread of automobiles. It’s the illegal entry for which a car was used as one of the problems. In this study, Authors devised the system to distinguish human being presence in a car. Piezoelectric ceramics were used to measure micro-vibrations generated by humans in the car. This sensor was placed under a tire. This sensor was used to measure the vibration of the vehicle body when a person was or was not in the car. By using the cross-correlation function for the measurement results, the presence or absence of people in the car was determined. The maximum of the cross-correlation coefficient and a total were acquired and that was classified using the distribution. As a result, between when human being was not in the inside of car and when it was in car, meaningful difference was seen in many cases and was able to distinguish it.
