Patent ID: 11884208
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Control (Instruments)
Classification: CPC B  G | IPC B  G

Claim 5:
6. A danger detection method for detecting a danger on a road, the danger that changes with a time-series change and may become less dangerous due to the time-series change, the danger detection method comprising:
acquiring, by a vibration acquisition unit, an acoustic signal collected by a microphone mounted on a vehicle when the vehicle passes through a region on a predetermined road;
determining, by a danger determination unit, whether the acoustic signal is derived from the danger;
determining, by a danger location detection unit, whether the danger is present in the region on the predetermined road based on the number of times an acoustic signal acquired from each of a plurality of the vehicles is determined to be derived from the danger; and
notifying, by a danger information notification unit, a communication device with a possibility of passing through the region on the predetermined road of danger information that is information regarding a region on a road determined to have the danger.