Hitachi Construction Machinery Co., Ltd.

Seiya Katou

Takeshi Ito

Hiroshi Watanabe

Akiyoshi Kirimura

The safe operation assistance deviceincludes: a connecting destination detecting sectionthat detects and manages a connection state between the safe operation assistance deviceand a connecting destination device; a unique information setting sectionthat sets unique information identifying a vehicle type of an own vehicle according to the connecting destination device; a positional information acquisition sectionthat acquires positional information of the own vehicle; an own vehicle information management sectionthat manages the positional information and the unique information of the own vehicle; an inter-vehicle communication sectionthat transmits the own vehicle information to other vehicle and acquires other vehicle information; and a risk determination sectionthat determines presence or absence of a collision risk between the own vehicle and the other vehicle using the own vehicle information and the other vehicle information.

Safe operation assistance device, fleet management terminal, and safe operation assistance system

A safe driving assistance device includes a region setting section that sets a collision risk determination region used for determining presence or absence of a collision risk of a host vehicle, and a determination section that determines a collision risk between the host vehicle and another vehicle using a host vehicle collision risk determination region, another vehicle collision risk determination region, and environment data. The host vehicle collision risk determination region of the host vehicle is set based on travel data of the host vehicle, a vehicle specification of the host vehicle, and the environment data obtained by the host vehicle. The other vehicle collision risk determination region is obtained by a vehicle-to-vehicle communication device. The other vehicle collision risk determination region is the collision risk determination region of the other vehicle as a collision risk determination target with the host vehicle set by the other vehicle.

Safe driving assistance device

Onboard terminal device includes its own vehicle information acquisition section, a vehicle-to-vehicle communication section, and a collision risk determination section. The vehicle information acquisition section acquires the vehicle information including position information of an own vehicle. The vehicle-to-vehicle communication section performs wireless communications with another vehicle to communicate one's vehicle information to another vehicle and to receive the another vehicle's information, which includes position information of the another vehicle, from the another vehicle. The collision risk determination section determines a risk of collision between the one vehicle and the another vehicle by using a predetermined determination algorithm. The collision risk determination section sets priority of the one vehicle and priority of the another vehicle based on details of work, which the one vehicle and the another vehicle are performing, respectively, and changes the determination algorithm based on the priority of the one vehicle and the priority of the another vehicle.

Safe operation assistance system and vehicle collision prevention method

An on-board terminal device includes a location measuring section that measures a location of an own vehicle, a wireless communication section that transmits own vehicle information including location information of the own vehicle to other vehicles and receives other vehicle information including location information of the other vehicles from the other vehicles by execution of wireless communication with the other vehicles, and a monitoring section that estimates the location of the other vehicles and calculates a relative distance between the own vehicle and the other vehicles when the wireless communication has been interrupted, and executes an alarm process for preventing collision of the own vehicle and the other vehicles when the relative distance is less than a predetermined threshold.

Growing community of inventors

Tokyo, Japan

Seiya Katou