Automatic recognizing system of object hoisting of overhead travelling crane

Abstract

The invention relates to an automatic recognizing system of the object hoisting of an overhead travelling crane. The automatic recognizing system comprises a resistance strain type load sensor, a signal amplifying circuit, a voltage current converting circuit, a voltage stabilizing circuit and a PLC (programmable logic controller) control system, wherein the PLC control system comprises the following steps that the program starts to operate, if the electrification scanning of the PLC program is the first time, a PLC is invoked for setting a hoisting and falling judgment value input into a program memory unit, and meanwhile, crane action signals and object weight data are scanned to be used as judgment conditions; and if the electrification is not the first time, the PLC hoisting and falling judgment value memory unit and the object weight data (the first state is the state without hoisting objects) are directly invoked, when the scanned object weight data is greater than the initial value of the object weight, a (hoisting judgment program) is invoked, and when the scanned object weight data is smaller than the initial value of the object weight, b (falling judgment program) is invoked. The automatic recognizing system has the advantages that simplicity and stability are realized, the error rate is low, the maintenance amount is small, and the like.

Description

Technical field [0001] The invention relates to an automatic detection device for hanging objects, in particular to an automatic identification system for crane hanging objects. Background technique [0002] In industrial production, the handling and hoisting of large tonnage materials generally adopts the crane crane system. At present, the application technology of crane crane is developing in the direction of technology and in-depth development. The technical problems involved in crane crane are increasing. Refinement. [0003] The existing overhead crane hoisting sensing system and signal transmission system are the application bottleneck of the overhead crane hoisting system. Due to unstable sensor and signal transmission, the failure rate is high, and the anti-interference ability is weak, and data is often lost. [0004] Program flow control is also the application bottleneck of the crane crane system. The current crane crane program is complicated, unstable and has a high er...

AI Technical Summary

Problems solved by technology

[0003] The existing overhead crane sensor system and signal transmission system are the application bottlenecks of the overhead crane system. Due to the unstable sensing and signal transmission, the failure rate is high, and the anti-interference ability is weak, and data is often lost

[0004] Program flow control is also the bottleneck in the application of crane hoisting system. The current crane hoisting program is complex, unstable and has a high error rate

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