Eddy current type sensing device and engineering machinery

Abstract

The invention provides an eddy current type sensing device and engineering machinery. The eddy current type sensing device comprises a pair of eddy current type sensors spaced with a preset distance, a resolving unit and a control unit, wherein the resolving unit is used for receiving output signals of the pair of eddy current type sensors and calculating, determining and outputting differential mode signals or / and common-mode signals corresponding to the output signals of the pair of eddy current type sensors; and the control unit is used for determining a wearing state of a metal conductor between the pair of eddy current type sensors according to the amplitude variation of the common-mode signals or / and used for determining a motion state of the metal conductor according to the amplitude variation and the frequency variation of the differential mode signals. The eddy current type sensing device can be used for automatically and effectively monitoring the motion state or / and wearing state of the metal conductor.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to an eddy current sensing device and construction machinery provided with the eddy current sensing device. Background technique [0002] With the increasingly fierce competition in the domestic construction machinery industry and the high price of construction machinery, users have increasingly higher requirements for the degree of automation and operational safety of construction machinery. However, at present, there is no effective monitoring of the state of the steel cables commonly used in construction machinery. For example, the wear state of the steel cables cannot be monitored, so that it may continue to work in the damaged state of the steel cables, resulting in potential safety hazards; The motion state of the wire rope (including the running and stopping of the wire rope) cannot be monitored, so it is impossible to carry out corresponding control operations according...

AI Technical Summary

Problems solved by technology

However, at present, there is no effective monitoring of the state of the steel cables commonly used in construction machinery. For example, the wear state of the steel cables cannot be monitored, so that it may continue to work in the damaged state of the steel cables, resulting in potential safety hazards; The motion state of the wire rope (including wire rope running and stopping) cannot be monitored, so it is impossible to carry out corresponding control operations according to the real-time motion state of the wire rope, and it is difficult to realize the automatic operation of construction machinery

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