OPERATIONAL STABILITY ENHANCING DEVICE FOR CONSTRUCTION MACHINERY

• US 20140118533A1
• Filed: 01/28/2013
• Published: 05/01/2014
• Est. Priority Date: 01/27/2012
• Status: Abandoned Application

• Current Assignee: Doosan Infracore Company Limited
• Original Assignee: Doosan Infracore Company Limited
• Inventors: Chang, Kyung Yul
• Application Number:
  US14/125,467
• Publication Number:
  US 20140118533A1
• Time in Patent Office: Days
• US Class Current: 348/118
• CPC Class Codes: B60R 1/00 Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
• CPC Class Codes: B60R 1/27 providing all-round vision, e.g. using omnidirectional cameras
• CPC Class Codes: B60R 1/28 with an adjustable field of view
• CPC Class Codes: B60R 2300/301 combining image information with other obstacle sensor information, e.g. using RADAR/LIDAR/SONAR sensors for estimating risk of collision
• CPC Class Codes: B60R 2300/70 characterised by an event-triggered choice to display a specific image among a selection of captured images
• CPC Class Codes: E02F 9/24 Safety devices , e.g. for preventing overload E02F9/226 takes precedence
• CPC Class Codes: E02F 9/261 Surveying the work-site to be treated
• CPC Class Codes: G06T 3/4038 Image mosaicing, e.g. composing plane images from plane sub-images

Abstract

According to the present invention, an operational stability enhancing device for construction machinery is provided. The operational stability enhancing device for construction machinery includes: a plurality of cameras configured to capture surrounding images of construction machinery; a plurality of sensors configured to detect an obstacle located in the surrounding area of the construction machinery; a monitor configured to display the surrounding images captured by the plurality of cameras; and a control unit configured to, in a case where a detected object is detected in a surrounding area of a moving path by the sensor, and the detected object is an avoidance processing target, display an image of the captured detected object on a monitor through screen conversion or change the image of the captured detected object so as to be easily recognized by an operator when the construction machines approaches the detected object.

Claims

1. An operational stability enhancing device for construction machinery, comprising:

a plurality of cameras configured to capture surrounding images of construction machinery;

a plurality of sensors configured to detect an obstacle located in a surrounding area of the construction machinery;

a monitor configured to display the surrounding images of the construction machinery captured by the plurality of cameras;

an electronic hydraulic pressure control valve configured to control an output flow rate of a corresponding hydraulic system driving unit so as to correspond to a manipulation signal of a user manipulation unit of the construction machinery; and

a control unit configured to, in a case where a detected object is detected in a surrounding area of a moving path by the sensor, and the detected object is an avoidance processing target, display an image of the captured detected object on a monitor through screen conversion or change the image of the captured detected object when the construction machinery approaches the detected object.

2. The operational stability enhancing device of claim 1, wherein in a case where the detected object is an avoidance processing target, the control unit delays or stops an operation command for the manipulation signal by automatically controlling the electronic hydraulic pressure control valve when the construction machinery approaches the detected object.

3. The operational stability enhancing device of claim 1, further comprising:

a scanner configured to scan surrounding information of the construction machinery.

4. The operational stability enhancing device of claim 3, wherein the scanner is installed at an upper side of the construction machinery to 3D scan obstructions scattered in an irregular ground and a field environment.

5. The operational stability enhancing device of claim 3, wherein the control unit includes:

an image processor configured to process images captured by the scanner and the cameras;

a graphic processor configured to process the processed images on a monitor as at least one of the respective images, a single image, or a selected image and display the processed image;

a manipulation signal determiner configured to determine a current operation state of the construction machinery by receiving the manipulation signal of the construction machinery;

an obstacle determiner configured to read from the camera the surrounding image of the moving path of the construction machinery when the manipulation signal determiner determines the operation state, compare the read image with the surrounding information obtained by the scanner, check whether the surrounding information is changed, and determine an existence of the obstacle; and

a control signal generator configured to receive from the operator an input signal for determining whether the detected object is an operation target or the avoidance processing target when the obstacle is detected as a result of the determination of the obstacle determiner, and filter a current value of the manipulation signal, which disables the operation of the obstacle determiner when a signal corresponding to the operation target is generated, and which makes the corresponding operation command be automatically delayed or stopped when the construction machinery approaches the detected object when a signal corresponding to the avoidance processing object is generated.

6. The operational stability enhancing device of claim 1, wherein the plurality of cameras includes a camera capturing a right-front-upper area of the construction machinery.

7. The operational stability enhancing device of claim 6, wherein the control unit makes an image captured by the camera capturing the right-front-upper area be output on an entire region or at least a predetermined region of the monitor when a boom is up or a turning body turns.

8. The operational stability enhancing device of claim 6, wherein the camera capturing the right-front-upper area captures images for a right-front side of the turning body of the construction machinery, a right side having a predetermined angle with respect to the right-front side, and a 3D space at a right-upper side vertical to the right-front side and the right side.

9. The operational stability enhancing device of claim 1, wherein the image of the captured detected object is changed by selecting at least one of a method of making the corresponding image flicker, a method of displaying a screen image with a different color, and a method of displaying the corresponding image on the entire monitor or displaying the corresponding image at a center portion of the monitor in a pop-up form in a case where the corresponding image is displayed on one screen among the plurality of screens.