Komatsu Corporation

Yukihiro Nakanishi

Takeshi Kurihara

Shinji Mitsuta

Masaomi Machida

Tomikazu Tanuki

Dai Tsubone

Eishin Masutani

Shigeru Harada

Satoshi Fukuhara

Yasunori Ohkura

Makito Yahata

A perimeter monitoring device is configured to monitor a surrounding of a work vehicle and to display a monitored result on a display device. The perimeter monitoring device comprises a vehicle information detecting part, a plurality of cameras, a bird's-eye image display unit, a plurality of obstacle detecting sensors, an obstacle processing part, and a camera image displaying unit. The vehicle information detecting part detects a speed of the work vehicle. The cameras capture image data regarding the surrounding of the work vehicle. The bird's-eye image display unit displays a bird's-eye image based on the image data. The obstacle detecting sensors detect obstacles in the surrounding. The obstacle processing part issues a warning when an obstacle is detected. The camera image displaying unit displays a camera image adjacent the bird's-eye image. The images are not displayed and the warning is not issued when the vehicle speed exceeds a threshold value.

Perimeter monitoring device for work vehicle

A surroundings monitoring system includes: a detection device that is disposed in a work vehicle and configured to be able to detect an object around the work vehicle; an acquisition unit that acquires a command signal indicating an operation checking mode for inspecting the detection device; a determining unit that determines a quality of an operating state of the detection device based on a detection result of the detection device after the command signal is acquired; and a display device that displays identification information of the detection device of which the operating state is determined to be not good by the determining unit.

Surroundings monitoring system, work vehicle, and surroundings monitoring method

A work vehicle periphery monitoring system which monitors a periphery of a work vehicle with a vessel for loading a load thereon, the work vehicle periphery monitoring system includes: a plurality of object detecting devices each of which is attached to the work vehicle and detects an object existing around the work vehicle; and a controller which notifies an alarm based on a detection result of the object detecting device and switches between a notification mode for notifying the alarm and a restriction mode for restricting the notification of the alarm based on a state of the work vehicle.

Work vehicle periphery monitoring system and work vehicle

A surroundings monitoring system includes: a detection device that is disposed in a work vehicle and configured to be able to detect an object around the work vehicle; and a display device that is disposed in the work vehicle so as to display the work vehicle on a screen and display a detection area of the detection device in which an abnormality has occurred around the work vehicle on the screen.

A dump truck having a periphery monitoring apparatus is adapted to display an image of surroundings of the dump truck on a display apparatus. A rearward camera is attached to a vehicle body of the dump truck underneath a vessel of the dump truck and positioned forward of a rear edge portion of the vessel. A rearward camera image captured by the rearward camera includes the rear edge portion of the vessel, an area below the vessel, and an area rearward of the vehicle body. A display control section is configured to display the rear edge portion of the vessel in an upper region of the rearward camera image, to display a ground surface below the vessel in a lower region of the rearward camera image, and to display a vehicle body outer edge line obtained by vertically projecting an outer edge of the vessel onto the ground surface.

Dump truck periphery monitoring apparatus

A periphery monitoring apparatus for a work vehicle includes a plurality of obstacle detection sensors, a warning region setting section and a warning section. The obstacle detection sensors are mounted on the work vehicle, and each of the obstacle detection sensors is configured to determine a relative position of an obstacle with regard to the work vehicle by detecting the obstacle in the surroundings of the work vehicle. The warning region setting section is configured to set a warning region, where it is necessary to warn a driver of a presence of the obstacle, according to a movement state of the work vehicle. The warning section is configured to warn a driver that the relative position of the obstacle is positioned in the warning region.

Work vehicle periphery monitoring apparatus

A perimeter monitoring device for a work vehicle is configured to monitor a surrounding of the work vehicle and display a monitored result on a display device. The perimeter monitoring device includes cameras, a bird's-eye image display unit, obstacle detecting sensors, a camera image specifying unit, and a camera image displaying unit. The camera image specifying unit is configured to specify one or more camera images in which one or more of obstacles are captured when the one or more of obstacles are detected by the obstacle detecting sensors. The camera image displaying unit is configured to display a relevant camera image in alignment with the bird's-eye image on the display device when a plurality of camera images are specified by the camera image specifying unit, the relevant camera image being ranked in a high priority ranking based on a priority order set in accordance with travelling states.

A work vehicle periphery monitoring system which monitors a periphery of a work vehicle including a vehicle body frame supporting front and rear wheels and a vessel loading a load thereon, the work vehicle periphery monitoring system includes: an object detecting device which is attached to the work vehicle and detects an object existing at a rear side of the work vehicle; and a controller which notifies an alarm based on a detection result of the object detecting device and switches between a notification mode for notifying the alarm and a standby mode for stopping the notification of the alarm based on a state of the work vehicle.

A dump truck includes radars attached, facing backward, to a position projected sideward a front fender extended from a lower deck to an upper deck of a front side of the vehicle, in which an irradiation beam has an angle of dip to cross at least a front wheel; and radars attached, facing sideward, to the side of the lower deck, and the radars and the radars are arranged such that a horizontal forward detection limit line of each of the radar and a horizontal backward detection limit line of each of the radar overlap and the horizontal backward detection limit lines of the radar are directed to a side of a center plane of the vehicle to detect the obstacle in the side of the vehicle.

Dump truck with obstacle detection mechanism and method for detecting obstacle

A controller includes: a bird's eye image synthesizer generating bird's eye image information for displaying a bird's eye image of a work vehicle and a periphery of the work vehicle; a display controller displaying a first image in which a mark representing an object detected by radar devices overlaps the bird's eye image and a second image captured on the same screen of a monitor; an alarm notifying unit notifying, as the alarm, at least one of a first alarm of displaying a region with the mark differently from a region without the mark in the first image and a second alarm of notifying the existence of the object by a sound; and an alarm releasing unit releasing the alarm in accordance with a releasing order based on a position in which the object exists.

A dump truck includes a body and a plurality of cameras. The body includes an upper deck and a main frame disposed in a longitudinal direction. The cameras are configured and arranged to obtain images to be combined to generate a bird's-eye image to monitor a periphery of the dump truck. The cameras include a front camera, a rear camera and side cameras. The front camera is disposed at the front of the upper deck to obtain an image of an area in front of the body. The rear camera is disposed at a rear end of the main frame to obtain an image of an area in rear of the body. The side cameras are respectively provided on left and right sides of the upper deck to obtain images of an area between diagonally to the front and diagonally to the rear of the body.

Dump truck

In a work vehicle, a controller controls an engine based on an engine torque curve for defining a relationship between an engine speed, an engine output torque, and an operation amount of an accelerator operation member. The controller controls the engine based on a first engine torque curve during torque conversion travel. The controller controls the engine based on a second engine torque curve during lockup travel. The engine output torque of the second engine torque curve is less than the engine output torque of the first engine torque curve in at least a portion of a range of the engine speed when at least the operation amount of the accelerator operation member is a predetermined operation amount that is less than a maximum operation amount.

Work vehicle and work vehicle control method

A periphery monitoring device () comprises a monitor () that displays a bird's-eye image () that includes an image of a dump truck (), a payload meter ECU () that detects the load of the dump truck (), and a controller () that switches the size of a cargo image (C) displayed over the vessel () of the dump truck () and displays this image on the monitor () on the basis of the detection result of the payload meter ECU (). In a load display device for a dump truck, a plurality of cameras are installed and the load display device monitors the periphery by using a bird's-eye image that combines images obtained by the plurality of cameras. The load display device includes a display component, a detector and a display controller. The display component is configured to display the bird's-eye image including an image of the dump truck. The detector is configured to detect a load of the dump truck. The display controller is configured to switch a size of a simulated cargo image displayed over a vessel of the dump truck based on a detection result of the detector and to display the simulated cargo image on the display component.

Load display device for dump truck

A work vehicle surrounding area monitoring device includes an imaging unit, a bird's-eye view image creating unit, a display unit and a traveling state determining unit. When the work vehicle is in the stopped state, the bird's-eye view image creating unit is configured to use a first virtual projection plane to create the bird's-eye view image, and at least an outer edge portion of the first virtual projection plane has a shape that increases in height from the ground surface as a distance from the work vehicle increases. When the work vehicle is in the traveling state, the bird's-eye view image creating unit is configured to use a second virtual projection plane to create the bird's-eye view image, and at least an outer edge portion of the second virtual projection plane has a shape having a uniformly flat height from the ground surface.

Surrounding area monitoring device for work vehicle

A work vehicle includes an engine, a travel device, a hydraulic pump, a work implement, a torque converter device, and a controller. The torque converter includes a torque converter and a lockup clutch. The controller is configured to switch the lockup clutch between a connected state and a non-connected state in accordance with a travel state of the work vehicle. The controller is configured to determine whether load increase conditions associated with an increase in load on the work implement are satisfied, and to control the lockup clutch so that the lockup clutch is in the non-connected state when the load increase conditions are satisfied.

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Hiratsuka, Japan

Yukihiro Nakanishi