A monitoring system for a tower crane

Abstract

The invention provides a monitoring system of a tower crane. The monitoring system comprises an image acquisition unit, an image processing computing unit and an alarm unit, wherein the image acquisition unit comprises a first camera arranged at the position of a driving cabin, a second camera arranged at the tail end of a tower boom and two reference scales arranged in front of the visual fields of the two cameras respectively; the image processing computing unit selects a hook image shot by the camera from images acquired by the image acquisition unit as a computing image, acquires a straight connection line between the bottom end of the hook in the computed image and the center of a lens of the corresponding camera and the scale, through which the straight connection line or an extension line of the straight connection line passes, of the corresponding reference scale in the image, and computing the actual height parameter and amplitude parameter of the hook at the current position relative to the tower boom by taking a corresponding calculation basis as a criterion; and the alarm unit is connected with the image processing computing unit. According to the monitoring system, a driver can intuitively know the current operating condition of the tower crane; therefore, the potential safety hazard of operating of the tower crane is reduced.

Description

technical field [0001] The invention relates to the technical field of safe operation of tower cranes on construction sites, in particular to a tower crane monitoring system capable of monitoring the operating state of the tower crane hooks. Background technique [0002] Tower crane is a commonly used lifting and handling equipment for heavy objects in construction engineering, referred to as tower crane (also known as tower crane). And horizontal conveying and installation of building components. [0003] During the work of the tower crane, it usually monitors its operating environment through signal workers' gestures, semaphores, walkie-talkies or closed-circuit television. Monitoring through closed-circuit television generally uses one or more cameras to shoot the operating environment, and directly transmits it to the video wall or display screen for the driver to watch. However, since the TV wall or display screen is generally composed of multiple screens, there is no...

AI Technical Summary

Problems solved by technology

[0004] 1. It is not intuitive enough, that is, the quantitative parameters of the current operating state of the tower crane cannot be given, and the driver cannot intuitively evaluate the operation of the tower crane. For drivers with little experience, there are great safety hazards, such as hooks Running on the tower arm is too far beyond the safe range, and the hook is running too high on the tower arm beyond the height range, etc.;

[0005] 2. The alarm prompt cannot be given, that is, when the tower crane is running beyond the safe range, the alarm signal cannot be given to remind the driver to pay attention to the driving of the tower crane in time, making it easy for the driver to ignore some dangerous situations

[0006] Of course, in the prior art, sensors are also used to collect various operating parameters of the tower crane, but after a period of use, errors will be caused due to sensor loss, which will affect the normal operation of the tower crane.

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