Patent ID: 11947014
Assignee: NEC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A passenger monitoring system comprising:
a ranging sensor that is provided in a vehicle and capable of outputting a distance information corresponding to a distance to a passenger in the vehicle;
a processor; and
a memory storing instructions executable by the processor to estimate a state of congestion of the vehicle based on the distance information,
wherein the ranging sensor includes a first ranging sensor to scan a first scanning region and a second ranging sensor to scan a second scanning region,
wherein the first scanning region and the second scanning region include an overlapping area at which the first scanning region and the second scanning region overlap,
wherein the instructions are executable by the processor to count a number of the passengers in the vehicle by subtracting the number of the passengers based on distance information corresponding to the overlapping area from a sum of the number of the passengers based on distance information output from the first ranging sensor and the number of the passengers based on distance information output from the second ranging sensor.