Komatsu Corporation

Jun Morinaga

Tadashi Kawaguchi

Hiroaki Inoue

Masanori Minagawa

Qi Ding

Yasuhiro Ibusuki

Yasuhiro Ohyama

Hiroaki Take

Kentaro Murakami

Shuki Akushichi

Hikosaburou Hiraki

Koichiro Itow

Kazuki Takehara

Kouzou Suzuki

Takao Suehiro

Shimon Jinbo

A captured image acquisition unit configured to acquire a captured image captured by an imaging device mounted on a work vehicle. A posture image acquisition unit configured to acquire a posture image representing at least one of a roll angle and a pitch angle of the work vehicle. A display image generation unit configured to generate a display image in which the posture image is disposed on the captured image so as to display the posture image at a position facing the operator's seat in a width direction of the display device. A display control unit configured to output a display signal for displaying a display image to the display device.

Display control system, display control method, and remote operation system

A work vehicle includes work equipment having a work tool and a support member supporting the work tool. A display control system controls a display device provided outside the work vehicle. The display control system includes a captured image acquisition unit, a supplementary image acquisition unit, a display image generation unit, and a display control unit. The captured image acquisition unit acquires a captured image captured by an imaging device mounted on the work vehicle. The supplementary image acquisition unit acquires a supplementary image representing information related to the work vehicle. The display image generation unit generates a display image in which the supplementary image is disposed in an area where a side surface of the support member can be shown in the captured image. The display control unit outputs a display signal in order to display the display image on the display device.

Display control system and display control method

A bucket height notification device includes a bucket height specification unit and a bucket height notification unit. The bucket height specification unit specifies a bucket height from a ground surface to a bucket of work equipment included in a work vehicle related to remote operation. The bucket height notification unit notifies of the bucket height.

Bucket height notification device and bucket height notification method

A captured image acquisition unit of a display control device according to the present invention acquires an image captured by an imaging device mounted on a loading vehicle. A loaded weight acquisition unit acquires a loaded weight measured by a weight scale mounted on a transport vehicle. A display image generation unit generates a display image obtained by disposing an image showing the loaded weight on the captured image. A display control unit outputs a display signal for displaying the display image to a display device.

Display control device, display control system, and display control method

A display control device includes an image receiving unit that receives an image captured by an imaging device included in a work machine and a display control unit that processes the image based on a movement amount of the work machine in receipt delay time of the image, and generates a display signal.

Display control device and display control method

A work vehicle includes: an imaging device that captures an image in which a work target is shown; an image transmission unit that transmits the image captured by the imaging device to a control device; an operation signal reception unit that receives an operation signal from the control device; and an operation control unit that limits the operation signal according to a transmission status of the image.

Work vehicle, control device, and method for controlling work vehicle

A work vehicle includes a changing object that is an object in which a known change in an external appearance occurs for each fixed time, an imaging device that images an area where the changing object appears, and a transmitting device that transmits an image captured by the imaging device.

Work vehicle, display device, and fault determination method

A control device of an electric motor includes: an operating state setting unit configured to set an operating state; a maximum output acquiring unit configured to acquire maximum output of the electric motor that is preset according to the operating state set; a speed detecting unit configured to detect a speed of the electric motor; a torque limit value calculating unit configured to calculate a torque limit value based on the speed and the maximum output; and a torque limiting unit configured to limit torque of the electric motor by the torque limit value when accelerating the electric motor.

Control device and method for controlling electric motor

A control device of an electric actuator adapted to perform a forward-reverse movement includes a control unit adapted to be operated in a forward direction or a reverse direction in accordance with the forward-reverse movement of the electric actuator. It also includes a pilot circuit, which is connected to the control unit and which generates a forward pilot pressure or a reverse pilot pressure in accordance with the forward operation or the reverse operation of the control unit. The control device has a differential pressure acquiring unit that acquires a differential pressure between a pilot pressure corresponding to an operation direction of the control unit and a pilot pressure, in a direction opposite to the operation direction, and it has a control command generator that generates a control command for controlling the electric actuator based on the differential pressure acquired by the differential pressure acquiring unit. The control device includes a drive controller for controlling a drive of the electric actuator based on the generated control command.

Control device for an electric actuator

A display device includes a display controller and displays a content based on display signals output from the display controller. The display controller includes: a gauge value converter that converts measurements of a plurality of devices displayed in a predetermined unit into gauge values with the same scale; and a maximum gauge value determiner that determines a maximum one of the gauge values converted by the gauge value converter, so as for the gauge value determined by the maximum gauge value determiner to be displayed.

Display device for construction machine

It is determined that assisting is required when a deviation of a target matching engine speed and a current engine speed is equal to or more than a predetermined value, and for a predetermined period of time since the time point at which it is determined that assisting is required, a target assist engine speed is set at a high rotation target matching engine speed which is more than the target matching engine speed, and thereafter the target assist engine speed is set gradually closer to the target matching engine speed, and an assist torque command value is output to the generator assisting output of the engine, and the engine speed is controlled, so that the engine speed attains the target assist engine speed.

Engine control device of work machine and engine control method therefor

The disclosed rotating parking brake control device obviates the need for an operator to operate an emergency-stop switch. A hybrid controller, to which a brake is connected, outputs a drive control signal to a rotating electric motor to control drive of an upper rotating body and also controls the brake by generating a brake release command signal and outputting the brake release command signal to the brake. A pump controller also generates a brake release command signal, and the brake release command signal generated by the pump controller is transmitted to the hybrid controller through an inter-controller signal line. The brake release command signal is outputted to the brake only when the brake release command signal is generated by the hybrid controller and the brake release command signal is transmitted from the pump controller through the inter-controller signal line.

Rotating parking brake control device for construction machinery

An engine control device is provided including: detection units for detecting a driving state of a work machine using a generator, target engine speed setting units for causing, on the basis of the driving state, a target engine speed set for a case where electric power generation by the generator is OFF to be the same as a target engine speed set for a case where the electric power generation by the generator is ON, and engine target output calculation units for calculating an engine target output during electric power generation OFF that can be output at most when the electric power generation by the generator is OFF, and calculates an engine target output obtained by adding an output corresponding to an electric power generation amount by the generator to the engine target output when the electric power generation by the generator is ON.

An engine control apparatus includes a hydraulic pump driven by an engine, a hydraulic actuator to which pressure oil discharged form the hydraulic pump is supplied, an operation lever configured to operate the hydraulic actuators, a detection means detecting operation amounts of operation lever means, an target flow rate calculation unit () calculating an target flow rate of the hydraulic pump based on the operation amount of the operation lever, a first target speed calculation unit () calculating a first target speed of the engine according to the target flow rate, a pump output limit value calculation unit () limiting the maximum target speed of the engine in an relief operation according to a load pressure of the hydraulic pump, a fourth engine target speed calculation unit ().

Engine control apparatus

A work machine includes: hydraulic actuators, and; a capacitorfor storing electric power when a generator motoroperates as a generator and for supplying electric power when the generator motoroperates as a motor; and a swing electric motor, the hydraulic actuators, andand the swing electric motorare operated by operation of operating levers. The work machine includes an idling stop control unitfor stopping the idling of an engineand retains the swing electric motorin an operation prohibited state at least on the condition that stored voltage of the capacitoris predetermined voltage or higher when the neutral states of the operating leverscontinue for a predetermined stop time during operation of the engine

Growing community of inventors

Yokohama, Japan

Jun Morinaga