Patent ID: 11943687
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 8:
9. A data collection method to be performed by a data collection system which includes a server device and at least one probe vehicle,
wherein the server device collects data obtained by the at least one probe vehicle, the method comprising:
storing a master map which is divided into a plurality of segments, each of the plurality of segments having a corresponding segment ID and including a plurality of unit ranges, wherein a necessity of data collection for each of the plurality of unit ranges included in each of the plurality of segments is indicated by a binary value;
determining a segment where a respective probe vehicle among the at least one probe vehicle is located based on a segment ID transmitted from the respective probe vehicle, extracting a partial map corresponding to the determined segment from the stored master map, and transmitting the extracted partial map to the respective probe vehicle;
obtaining data by the respective probe vehicle; and
transmitting, by the respective probe vehicle, a request for the partial map with the segment ID to the server device, receiving the partial map from the server device, identifying a unit range where data collection is needed in the partial map received from the server device, and transmitting data obtained in the identified unit range, to the server device,

wherein the method further comprises:
updating the stored master map according to a collection situation of data; and
when the master mag is updated, assigning a version number to a partial map included in the updated master map, and transmitting both of the partial map and the version number to the respective probe vehicle.