Device and method for measuring swing angle of double-hanger bridge crane on basis of image detection

Abstract

The invention discloses a device and a method for measuring a swing angle of a double-hanger bridge crane on the basis of the image detection. A lamp box is used as a main body of the device; four lateral surfaces of the lamp box are provided with linear array CCD (Charge Coupled Device) devices and LED (Light-Emitting Diode) lamps; the linear array CCD devices and the LED lamps are oppositely arranged; a lifting rope is arranged at the middle position of the lamp box; the linear array CCD devices are connected with a CCD shallow measurement device by wires; and two groups of linear array CCD devices are provided. According to a vision principle of a machine, double hangers process and calculate obtained pulsed signals to obtain the swing angle by two sets of illuminating devices and the linear array CCD shadow measurement device; and the obtained data can be used as feedback information for the anti-sway control of the bridge crane and can also be directly shown to a cab of the bridge crane. The device and the method for measuring the swing angle of the double-hanger bridge crane on the basis of the image detection have the advantages of simple structure, high accuracy, strong anti-interference capacity and the like.

Description

technical field [0001] The invention relates to a measuring device, in particular to a device and method for measuring the swing angle of a double-slinger bridge based on image detection. Background technique [0002] The movement of the bridge crane will cause the load and spreader to swing, making it possible to collide with other surrounding objects or operators, resulting in property damage or even casualties. Especially when the bridge crane reaches the designated position and stops moving, the residual swing of the load will not only bring safety hazards, but also greatly reduce the working efficiency of the crane. With the development of container transportation and the expansion of port construction scale, in order to improve the speed of container ship loading and unloading, the use of double container spreaders of container bridge cranes is becoming more and more extensive. To better control the swing of the double spreaders and the load under the bridge crane so ...

AI Technical Summary

Problems solved by technology

However, its structure is complex and its working methods are diverse. The two spreaders can be lifted independently or synchronously, which brings great difficulty to the detection of the swing angle of the spreader.

[0003] Existing bridge crane swing angle detection devices are all designed for single-sling bridge cranes. These detection devices use relatively complicated detection instruments, which are expensive, inconvenient to maintain, and low in accuracy.

Moreover, the existing container cranes have a low degree of automation in operation, and most rely on the operator to visually observe the spreader and the load to obtain its swing situation. This method is not only low in accuracy but also easily causes work fatigue, which affects work efficiency and work quality.

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