Distributed tower group anti-collision system

Abstract

The invention relates to a distributed tower group anti-collision system. Control systems arranged on tower cranes realize dynamic information interaction among tower cranes by adopting a radio communication mode. The system comprises a main controller for signal acquisition and relay output control, a display for displaying a running state in real time and a radio communication module for finishing information transmission among site cranes, wherein the radio communication module is provided with a preset protocol among the tower cranes. In the system, the controllers on the tower cranes have no primary or secondary points and are in the equal status, and each controller respectively has the functions of information acquisition, control decision and information exchange and is mainly in charge of the detection of the state of the local tower crane, the anti-collision calculation of the local tower crane and related tower cranes and the output control of the local tower crane. The invention provides a system capable of guaranteeing the normal interaction of information among the tower cranes, recovering network communication according to a certain protocol when the network has a fault and guaranteeing that the tower groups have no collision accidents.

Description

technical field [0001] The invention relates to a communication technology, in particular to a communication connection technology used for tower cranes on a construction site. Background technique [0002] On the construction site, there are usually multiple tower cranes busy. In order to ensure safety and prevent collisions with each other, there needs to be convenient and reliable communication between tower cranes, that is, wired or wireless communication can be used. method to contact. Due to the limited conditions of the construction site, remote data collection, monitoring and control are realized by means of wireless stations. Compared with erecting dedicated cables (or optical cables) and renting telecommunication lines, etc., it has the advantages of low cost, fast construction, reliable operation, and simple maintenance. However, wireless communication is prone to communication failures, and the network is prone to disconnection and other problems; in addition, d...

AI Technical Summary

Problems solved by technology

In this control mode, the exchange of information between sub-controllers is completed through the transfer of the main controller. Therefore, the main controller needs to have strong computing power, especially when the system scale is large (that is, there are many control tower cranes) When it is necessary to complete the scheduling and control of multiple devices at the same time, the load is heavy

However, due to the influence of the tower arm, when the tower crane is running at high speed, the linear speed is high, which makes the real-time requirements for the control of the tower crane anti-collision system also high. This centralized control method can no longer meet the real-time requirements of the system.

In addition, in the centralized control mode, since the entire system is completely dependent on the main controller, the fault tolerance of the system is low. Once the main controller has a problem, the entire system will be paralyzed

The centralized control mode also has the disadvantage that the control system is not easy to modify and expand, and it is not suitable for the randomness of the tower crane on the construction site.

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