Monitoring method for anticollision of quayside container crane sling

Abstract

The invention relates to a monitoring method for anticollision of a quayside container crane sling. The method of the invention employs two two-dimensional laser scanners, and once a car enters a seaside scanning area, the occluded two-dimensional laser scanner stops transmitting scanning data to an industrial control computer and a PLC (programmable logic controller) on-site, while the other two-dimensional laser scanner reads the height of the area and transmits the scanning data; once the car moves out of the occluded area, the two-dimensional laser scanner stopping transmitting scanning data transmits updated scanning data again to the industrial control computer and the PLC on-site; if the two two-dimensional laser scanners are both occluded by the car, ineffective data are first transmitted to the occluded area, and the height data are updated immediately when the car leaves. In the invention, the employment of two two-dimensional laser scanners can reduce the scope of a scanning blind area to the utmost and improve measuring accuracy, scanning efficiency and precision. Once one laser scanner breaks down, the other scanner can still maintain the normal work of an anticollision system. Thus, the method of the invention has high reliability.

Description

technical field [0001] The invention relates to a monitoring method, in particular to a monitoring method for anti-collision of a quay crane spreader. Background technique [0002] With the strong demand for container transportation in the world and the continuous growth of container port throughput, the quay crane spreader in the container yard is also becoming increasingly busy. Containers stacked in the yard are generally at random heights. During the actual operation of the driver of the quay crane spreader, the height of the spreader (with containers) must be higher than the highest height of the container in the yard, so that the trolley can pass safely. , otherwise, the spreader will knock down the container in the yard. In particular, the horizontal direction of the trolley and the vertical direction of the spreader are operated at the same time, although the efficiency of the operation is improved, but it is also prone to operator errors, and the height of the spre...

AI Technical Summary

Problems solved by technology

Through the cooperation of corresponding hardware and software, the system specifically realizes the optimization of the movement trajectory of the spreader, so that the safety index and efficiency index can be satisfied at the same time, and the collision between the spreader and the container can be effectively prevented, but the anti-interference ability of the system is weak. Once the spreader trolley blocks the laser sensor of a certain working lane, it is easy to cause the PLC controller to receive wrong information; at the same time, once a laser sensor fails, other laser sensors cannot maintain the normal operation of the system, and the reliability is low; At the same time, one laser sensor is only aimed at one operation lane, and the scanning efficiency and accuracy are not high

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