Eddy current type sensing device and engineering machinery

A technology for sensing devices and construction machinery, applied in measuring devices, material analysis through electromagnetic means, instruments, etc., can solve problems such as difficulty in realizing automatic operation of construction machinery, inability to monitor the movement state of steel cables, hidden safety hazards, etc., and achieve an improvement The effect of automation capability or/and safety controllability, simple and practical overall structure, and low cost

Inactive Publication Date: 2012-09-12
SANY HEAVY IND CO LTD (CN)
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  • Abstract
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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

Method used

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  • Eddy current type sensing device and engineering machinery
  • Eddy current type sensing device and engineering machinery
  • Eddy current type sensing device and engineering machinery

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] Such as figure 1 and figure 2 As shown, the embodiment of the eddy current sensor device of the present invention includes: a pair of eddy current sensors 11, 13, a calculation unit 3 and a control unit 5; wherein, the pair of eddy current sensors 11, 13 are separated by a preset distance ;

[0021] The calculating unit 3 is used to receive the output signals of the eddy current sensors 11, 13, and calculate and output the differential mode signal or / and ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/90G01P13/00G01N27/904
Inventor 聂周王汉其
Owner SANY HEAVY IND CO LTD (CN)
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