Yanmar Power Technology Co., Inc.

Yanmar Holdings Co., Ltd.

Japan Agency for Marine-earth Science and Technology

Tomoya Fukukawa

Naohiro Hara

Yuichiro Dake

Toshiyuki Yokoue

Yasuhiro Ueda

Isao Wakabayashi

Hiroshi Yoshida

Tadahiro Hyakudome

Ryotaro Suga

Hideki Endou

Takashi Yoshioka

Hisashi Sugiura

Ryuji Nakazono

Satoshi Minamiyama

A ship docking assistance device includes a position azimuth information acquisition unit; a LIDAR; a map generation updating unit; a high-point acquisition unit; and a position azimuth estimation unit. The LIDAR acquires point-group data three-dimensionally indicating the environment around a ship. The map generation updating unit generates a map around the ship based on the point-group data. The high-point acquisition unit acquires, from within the point-group data, a high point having a prescribed height or more. The position azimuth estimation unit estimates the position and the azimuth of the ship through matching between the position of the high point acquired by the high-point acquisition unit and the position of the high point in the map. The map generation updating unit updates the map by placing the point-group data in the map using, as references, the position and the azimuth of the ship estimated by the position azimuth estimation unit.

Ship docking assistance device

This ship maneuvering device causes a ship having at least one propulsion device mounted thereon to travel along a scheduled course. The ship maneuvering device is provided with a control unit. The control unit acquires an azimuth deviation between an actual bow azimuth, which is the current bow azimuth of the ship, and a target bow azimuth of the ship, and, on the basis of the azimuth deviation, generates a thrust command that indicates the thrust with which the ship is to be propelled. In the case where the azimuth deviation is equal to or greater than a prescribed value, the control unit generates a thrust command such that causes the speed of the ship is reduced below an actual speed which is the current speed of the ship.

Ship maneuvering device and ship

The present disclosure includes a radar configured to detect surrounding objects and terrain, and a LIDAR configured to detect the surrounding objects and terrain using a narrower detection range and a higher resolution than the radar. The disclosure also includes a first map, such as a wide-area map, generated based on information about the surrounding as detected by the radar, a second map, such as a high-resolution map, based on information about the surroundings as detected by the LIDAR, and a composite map that has the grid width of the first map and the grid width of the second map.

Map generation method and map generation device

A control target controller generates control targets in accordance with a route, the control targets being for controlling the location and orientation of a ship. The route has a plurality of via points. Each of the via points has information about a target location and a target orientation for the ship. The route is made up of a plurality of partial routes that sequentially connect the target locations of the via points. The control target controller comprises a transit target point generation part and an arrival determination part. The transit target point generation part can generate, as control targets, transit target points that are in the middle of the partial routes and have information about a target location and a target orientation for the ship. On the basis of the current location and the current orientation of the ship, the arrival determination part determines whether the ship has arrived at the transit target points.

Control target generation device and ship-steering control device

A LiDAR included in this automatic docking device measures the distance to a surrounding object at each predetermined angle by irradiating the object with light and receiving the light reflected by the object. When a ship offshore is instructed to perform automatic docking, the ship navigates to some extent by automatic navigation based on satellite positioning, and is then switched to automatic navigation based on the LiDAR. Before switching to the automatic navigation based on the LiDAR, the LiDAR performs preparatory measurement for measuring the distance to an object around a docking position. In this preparatory measurement, a control unit controls to change, for example, the orientation of the ship such that light emitted from the LiDAR can be reflected by the object around the docking position and can be received by the LiDAR.

Automatic docking device

The present invention provides an unmanned watercraft capable of sufficiently cooling equipment that generates a large amount of heat, capable of cooling such equipment without using energy in the watercraft, and capable of improving mean time between failures (MTBF) of a cooling device. An unmanned watercrafthas a cooling structure CS for cooling a central processing unit CPUfor image recognition and a central processing unit CPUfor control that constitute a central processing unit CPU as a heat-generating body. The cooling structure CS includes a waterproof containerthat accommodates the heat-generating body (an insulating envelope that surrounds the heat-generating body in an electrically insulated state). The waterproof containeris arranged outside a submerged partof the unmanned watercraftso as to be in contact with water present outside the unmanned watercraft, the submerged partbeing submerged in water.

Growing community of inventors

Osaka, Japan

Tomoya Fukukawa