US 12,227,137 B2
Impact analysis method, feature amount extraction method, impact analysis apparatus, and program
Hiroaki Ito, Tokyo (JP); and Shin Murata, Tokyo (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 18/022,066
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Aug. 20, 2020, PCT No. PCT/JP2020/031463
§ 371(c)(1), (2) Date Feb. 17, 2023,
PCT Pub. No. WO2022/038744, PCT Pub. Date Feb. 24, 2022.
Prior Publication US 2023/0322174 A1, Oct. 12, 2023
Int. Cl. B60R 21/0136 (2006.01); B60W 40/12 (2012.01)
CPC B60R 21/0136 (2013.01) [B60W 40/12 (2013.01); B60W 2420/54 (2013.01); B60W 2422/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An impact analysis method comprising:
acquiring an observed signal with a sensor installed at a predetermined position of a vehicle; and
outputting a result obtained by analyzing a time at which an impact occurs and a type of the impact from the observed signal with respect to the impact occurring on the vehicle at a position different from a position at which the sensor is installed in the vehicle,
wherein the type of impact includes at least one type of:
impact among impact from collision of an obstacle with the vehicle,
impact from the vehicle driving over a curb,
impact from collision of a flying object with the vehicle,
impact from the vehicle rubbing against an object other than the vehicle, or
impact from an object other than the vehicle rubbing against the vehicle,
the analyzing a combination of the time of the impact and the type of the impact is based on a first feature amount and a second feature amount,
the first feature amount corresponds to an attenuation degree according to univariate time-series data of the observed signal, and
the second feature amount corresponds to an oscillation degree obtained by performing dynamic mode decomposition of data according to the univariate time-series data of the observed signal.