Design of vision positioning system for opening of train tank

Vision positioning is an effective way for oil autoloading and unloading in oil refinery.A vision positioning system is developed with Insight1000 as the detecting device.The system can acquire images of circular opening continuously and detect the center of opening on real-time.In order to speed up the detection and improve its precision,the system is designed to use a composite method of matching and circle detection.The system transmits the data of position of circular opening to PLC through RS232 serial port.And then,the oil pipe is controlled to move,lower and transport oil by PLC.The performance of this system meets the requirements and the positioning data of the vision system is precise.