Patent ID: 8205164
Filing Date: 2012-06-19
Classification: E02F,G01C

Abstract:
1. An image display system for controlling automatic leveling of heavy equipment with a lower frame, an upper frame, and leveling means, the lower frame having traveling means, the upper frame being tiltably and swingably connected to the lower frame, and the leveling means being for adjusting horizontal levels of the upper frame, the image display system comprising: a sensor unit, adapted to sense posture information of the heavy equipment; a leveler electronic control unit, adapted to generate an image signal from the posture information; and an image display unit, adapted to display the image signal on a display screen, wherein the posture information includes inclination angles of the upper frame and the lower frame sensed on the basis of a horizontal surface against a direction of gravity, an azimuth angle of the heavy equipment sensed against a forward direction of the upper frame, and a swing angle of the upper frame sensed on the basis of a front direction of the lower frame, wherein the sensor unit comprises: an electronic compass, installed on one side of the upper frame, for sensing the azimuth angle of the heavy equipment against the forward direction of the upper frame, and swing angle sensing means, installed briefly in a center position of the leveling means, for sensing the swing angle of the upper frame, wherein the image display unit displays the heavy equipment as a symbol that symbolizes the heavy equipment, and the pitching and rolling angles of each of the lower frame and the upper frame is displayed as an operation change of the symbol on the image display unit, wherein, on the symbol, a horizontal line against a direction of gravity is displayed as a reference line of the leveling means, and wherein the azimuth angle of the heavy equipment is further displayed on the image display unit.