Crane Tilt Angle Determination Using GNSS Positioning

The patent replaces conventional mechanical bubble level instruments with a GNSS-based satellite positioning system. The system uses multiple GNSS receivers mounted on the crane to obtain position coordinates, which are then processed through mathematical algorithms (including Kalman filtering) to calculate the crane's tilt angle and levelness. This substitution of mechanical measurement with electronic positioning and computational processing achieves high measurement precision for complex crane structures without being constrained by the physical limitations of traditional level instruments.

The patent merges multiple measurement functions into a single integrated GNSS-based system. Instead of placing and coordinating multiple independent bubble levels on different crane portions, the system uses multiple GNSS receivers that simultaneously track satellite signals and provide position data. The central processing unit automatically collects coordinates from all receivers, performs unified computational processing using algorithms like Kalman filtering, and outputs comprehensive levelness measurements. This integration maintains high measurement accuracy while significantly improving operational ease, as the system requires minimal manual intervention once the receivers are installed.