| 主权项 |
1. A vehicle control system comprising
a mobile device carried by a user of a vehicle and an onboard device mounted on the vehicle, wherein the onboard device performs vehicle control predetermined for the vehicle when wireless communication between the mobile device and the onboard device is performed and the onboard device receives an authentication code unique to the vehicle from the mobile device located within an effective area around a specified vehicular place in the vehicle, wherein the onboard device includes: a vehicle-based transmission portion to wirelessly transmit a specified vehicle signal via an antenna provided at the vehicular place when a predetermined vehicle-based trigger is detected; wherein the mobile device includes: a mobile-based reception portion to receive the vehicle signal; a strength measurement portion to measure reception strength of the vehicle signal received by the mobile-based reception portion; a strength information storage portion to settle a target distance between the mobile device and the vehicular place and store strength information indicating characteristics of the reception strength corresponding to the target distance; an area determination portion to determine whether or not the mobile device is located within the effective area, based on the reception strength measured by the strength measurement portion and the strength information stored in the strength information storage portion; and a determination signal transmission portion to wirelessly transmit a specified determination signal when the area determination portion determines that the mobile device is located within the effective area; wherein the mobile device further includes: a state detection portion to detect a mobile state quantity as at least one of a tilt amount of the mobile device with reference to a gravity direction and a remaining battery level of the mobile device; a correction information acquisition portion to acquire correction information indicating characteristics of the reception strength corresponding to the mobile state quantity; and a strength information correction portion to correct the strength information stored in the strength information storage portion based on
the mobile state quantity detected by the state detection portion at a time of receipt of the vehicle signal andthe correction information acquired by the correction information acquisition portion. |
