Hitachi Construction Machinery Co., Ltd.

Hitachi, Ltd.

Godo Kaisha IP Bridge 1

Hirotake Ishii

Hidefumi Ishimoto

Akiyoshi Kirimura

Tomoyuki Hamada

Tomonori Yamamoto

A vehicle control system that makes it possible to ensure the safety and enhance the productivity at the same time is provided. An unmanned dumpreceives positional information about a manned vehicleby using infrastructure-to-vehicle communicationand infrastructure-to-infrastructure communication. In a case where an inter-vehicle distance X between the unmanned dumpand the manned vehicleis equal to or shorter than a reference distance Y, the unmanned dumpdecides whether or not vehicle-to-vehicle communicationis established between the unmanned dumpand the manned vehicle. In a case where it is decided that the vehicle-to-vehicle communicationis established, the upper limit of the travel speed of the unmanned dumpis set to a first speed V, and in a case where it is decided that the vehicle-to-vehicle communicationis not established, the upper limit of the travel speed of the unmanned dumpis set to a second speed V

Vehicle control system

A vehicle control system includes an autonomous traveling vehicle configured to autonomously travel in a mine, a manned vehicle. The autonomous traveling vehicle and the manned vehicle each include an own position estimating device and a vehicle mounted communication terminal. The autonomous traveling vehicle and the manned vehicle are communicatively connected via one wireless channel. The manned vehicle transmits manned vehicle location information using a first communication method at a first granularity. When a distance from the manned vehicle is determined to be a first inter-vehicular distance threshold or less based on the manned vehicle location information transmitted by the first communication method, the autonomous traveling vehicle instructs the manned vehicle to transmit the manned vehicle location information by a second communication method different from the first communication method at a second granularity smaller than the first granularity.

Growing community of inventors

Tokyo, Japan

Hirotake Ishii