Tadano Ltd.

The School Corporation Kansai University

Keita Mashima

Iwao Ishikawa

Satoshi Kubota

Shigenori Tanaka

Masaya Nakahara

Takayuki Kosaka

Koki Nakahata

Shinsuke Kanda

The present invention provides a guide display device capable of recognizing a feature in a work area while distinguishing whether the feature is a moving body or not. In a guide display device of a crane, 3D maps are created for continuous frames; an altitude value for each grid in a 3D map that is created at time closest to the current time is obtained as a first altitude value; altitude values for respective corresponding grids in a predetermined number of 3D maps other than the 3D map that is created at time closest to the current time are obtained, and the average of the altitude values is calculated as a second altitude value; and it is determined that the feature is a moving body when the difference between the first altitude value and the second altitude value exceeds a predetermined threshold.

Guide display device and crane equipped with same

An outrigger control device (A) includes: a plurality of outriggers () that is provided in a traveling body () and extendable/contractible between a non-grounding state where the traveling body is not supported and a grounding state where the traveling body is supported; an inclination sensor () that is provided in the traveling body and can detect inclination of the traveling body; and a controller () that controls an extension/contraction action of each outrigger and acquires a detection signal of the inclination sensor (). Further, the controller is provided with a grounding determination processing unit () that controls the outriggers to perform a predetermined grounding determination action and determines whether or not each outrigger is in the grounding state on the basis of the detected value of the inclination sensor at the time.

Outrigger control device

A guide display device of a crane including a data processing unit that creates a plurality of surfaces using point cloud data, which is acquired by a laser scanner from above a hung load and which includes the hung load, and creates a three-dimensional map according to the plurality of surfaces, the three-dimensional map being created for each prescribed period, wherein the data processing unit is configured to set a reference position at the hung load in the three-dimensional map and also set a current surface present within a prescribed distance from a past reference position as the surface of the hung load, thereby tracking the hung load in the three-dimensional map.

Guide display device, and crane provided with same

Provided is a guide display device with which incorrect recognition of a place having small features as a ground surface having no features can be suppressed in generating and updating a three-dimensional map. A data processing unit (): detects an edge (Eg) of a feature (E) on the basis of a result of subjecting image data captured by a camera () to image processing, and recognizes the feature (E) on the basis of the edge (Eg); and accumulates, from a predetermined number of frames from before the time at which the image data was captured, point group data (P) of a nearby range (Ma) of the edge (Eg) of the feature (E) that was recognized as a ground surface (F), and generates, on the basis of the accumulated point group data (P), a three-dimensional map (M) of the feature (E) the edge (Eg) of which has been recognized.

Guide display device and crane provided with same

A guide display unit for a crane, wherein a data processing unit: calculates a measurement area corresponding to the measurement area of a camera; the measurement area from the viewpoint of the camera and generates a first image; performs mosaic-processing on the image captured by the camera according to the particle size of the three-dimensional map and generates a second image; performs registration processing on the first image and the second image and calculates the amount of deviation between the first image and the second image; corrects the position of a guide frame figure with respect to the image of a suspended load and a feature on the basis of the calculated amount of deviation; and overlays the guide frame figure on the images of the suspended load and the feature and displays the result on the data display unit.

Provided is a guide display device that prevents misidentification of the same feature as a plurality of different features or the ground surface even if an occlusion area occurs. A guide display device for a crane includes: a laser scanner that scans a suspended load and a ground surface from above the suspended load; and a data processing unit that calculates a representative point for each grid using the point cloud data acquired by the laser scanner, creates a three-dimensional map based on the representative points, and updates the three-dimensional map if the newly calculated representative point differs from the existing representative point. When an occlusion area, which is a shadow of the suspended load, occurs in the three-dimensional map, the occlusion area is not updated even if the newly calculated representative point and the existing representative point are different.

Growing community of inventors

Kagawa, Japan

Keita Mashima