Steel wire rope double-loop magnetic flaw detection sensor

Abstract

The invention provides a steel wire rope double-loop magnetic flaw detection sensor. The double-loop magnetic flaw detection sensor comprises a magnetic field generation module, a magnetic field detection module, a direct-current signal preprocessing module, an alternating-current signal summator, a direct-current signal processing module, a single-chip microcomputer analog-to-digital conversion module, a power supply module and an upper computer intelligent processing module display module. An abrasion condition of the whole steel wire rope is evaluated by integrally measuring a diameter change of the steel wire rope, basic parameters of flaw detection software are intelligently set, then fine detection is performed, finally, a purpose of accurately measuring internal and external damageof the steel wire rope is achieved, and a transmission speed of a sensor to detected steel wire rope damage signals can be monitored. Quantification of damage signals of the steel wire rope is achieved by inquiring signal standards in a database according to the sizes of the damage signals. The sensor is stable and reliable in work and wide in application range, measurement sensitivity and accuracy are greatly improved, the damage condition of the steel wire rope can be found more easily and accurately, and quantification of damage to the steel wire rope is achieved.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a double-loop magnetic flaw detection sensor for steel wire ropes. Background technique [0002] At present, with the rapid development of industry and service industry, the application fields of steel wire ropes (such as mines, cableways, hoisting equipment, elevators, port machinery, cable bridges, etc.) are also expanding, but this is also accompanied by the Security risks are becoming more and more prominent. Therefore, the requirements for flaw detection of steel wire ropes are becoming more and more stringent. The principle of magnetic flaw detection in China can be divided into two types: weak magnetic detection and strong magnetic detection. The detection methods used by these manufacturers have some defects to varying degrees: for example: first, there is a deviation in the uniformity of the steel wire rope itself, which leads to false alarms during the measurement pro...

AI Technical Summary

Problems solved by technology

The principle of magnetic flaw detection in China can be divided into two types: weak magnetic detection and strong magnetic detection. The detection methods used by these manufacturers have some defects to varying degrees: for example: first, there is a deviation in the uniformity of the steel wire rope itself, which leads to false alarms during the measurement process; The jitter of the sensor will lead to deviations in the detection results of the sensor; third, in the case of the same damage to the steel wire rope, the internal damage and the magnetic flux leakage are small, while the external damage and the magnetic flux leakage are large. These factors lead to this type of flaw detection sensor. is more difficult

Fourth, there is a large amount of residual magnetism after the wire rope is tested, which will affect the next test

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