Title:
DETERMINATION DEVICE, DETERMINATION SYSTEM, DETERMINATION METHOD, AND PROGRAM
Document Type and Number:
Japanese Patent JP2023051582
Kind Code:
A
Abstract:
To detect an overweight vehicle.SOLUTION: A determination device includes: a feature quantity calculation unit that calculates a feature quantity dependent on magnitude of a peak wave of time-series data of observed values representing displacements of a bridge in a vehicle traveling direction at a position on the bridge where sensors are disposed, a vehicle determination unit that determines a weight of a vehicle, which has passed the bridge, using a determination model for use in determining the weight of the vehicle on the basis of the feature quantity; an overweight vehicle determination unit that, when the feature quantity is larger than a threshold, determines that the vehicle having passed the bridge is an overweight vehicle; a model learning unit that trains the determination model in learning processing on the basis of feature quantities calculated when plural test vehicles whose weights are already known pass the bridge; and an outlier learning unit that discriminates the feature quantities which are calculated in the learning processing when the respective test vehicles have passed the bridge, as a group of normal values, detects a border between the normal values and outliers, and designates the detected border as a threshold.SELECTED DRAWING: Figure 4
Inventors:
OKAWA HIROSHI
KOSUGI AKIFUMI
KOIZUMI DAISUKE
KOSUGI AKIFUMI
KOIZUMI DAISUKE
Application Number:
JP2021162390A
Publication Date:
April 11, 2023
Filing Date:
September 30, 2021
Export Citation:
Assignee:
TAIYO YUDEN KK
International Classes:
G08G1/015; G08G1/01; G08G1/065
Attorney, Agent or Firm:
Sakai International Patent Office