| 摘要 |
<p>The present invention relates to a mobile station of Global Position System for rubber-tyred gantry crane, and it comprises a global position system receiver, a radio receive station, a crane coder, control processor, and a programmable logic controller. The mobile station uses RTK (Real Time Kinematic) technology of the global position system, and gets a high precision coordinate of three dimensions, then sends it to the control processor and gets the currently crane position of the rubber-tyred gantry crane and the offset between crane wheel and crane racetrack's central line. At the same time, the control processor receives and calculates the signal which send by the crane wheel coder, and checks up and reckons the crane position and the crane wheel offset, converts it to the 4~20MA current signal by a digital-analog converter (D/A) or transfers it to the programmable logic controller directly by a serial port, and complete the crane auto-steering; on the other hand, calculates the crane position by the control processor and transfers it to the programmable logic controller by the serial port, complete the auto-register of the container management. The present invention can make the rubber-tyred gantry crane keeping agility when turnable yard, and also can make it working stability and credibility like the rail-mounted gantry crane, nicety reporting the container position, complete highly automation of container management.</p> |
