Crane strain monitoring method based on time-to-digital conversion technology

Abstract

The invention discloses a crane strain monitoring method based on a time-to-digital conversion technology. According to the crane strain monitoring method, strain is collected by adopting the time-to-digital conversion technology, inclination angles and acceleration data collected through combination of a tilt angle sensor and a trajectory tracing sensor are sent to a microcontroller together, and the microcontroller transmits the data to a remote monitoring terminal through a 3G module; the remote monitoring terminal mainly realizes analysis for performance of a crane and is used for estimating remaining fatigue life with a rain-flow counting method, testing crane deformation and tracking a space trajectory. Compared with the prior art, the crane strain monitoring method adopts time variation to replace strain gauge resistance variation for strain measurement, an additional AD conversion circuit is not needed, and the system power consumption is reduced; data are transmitted in a 3G mode, data transmission is not limited by distance, meanwhile, the data are subjected to algorithm analysis, stress and deformation conditions of the crane are monitored in real time, and safe operation of the crane is guaranteed.

Description

technical field [0001] The invention belongs to the field of crane operation state monitoring, and relates to a method capable of monitoring the strain, inclination angle, space trajectory and other states of the crane. Background technique [0002] A crane refers to a multi-action hoisting machine that lifts vertically and carries heavy objects horizontally within a certain space. At present, as a kind of handling machinery, cranes are widely used in ports, construction sites, and industrial and mining enterprises. As hoisting machinery plays an increasingly important role in national production, the monitoring of crane status has attracted more and more attention. [0003] The biggest feature of crane work is to do intermittent movement, that is, the corresponding mechanisms for retrieving, moving, unloading and other actions in a working cycle work alternately. During the alternating cycle operation of the crane, the crane may experience stress fatigue and insufficient ...

AI Technical Summary

Problems solved by technology

At present, the commonly used supervision method for cranes is regular inspection by special personnel, which fails to achieve the purpose of real-time monitoring and consumes a lot of manpower

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