Hall element based net-type ferromagnetic component surface crack detector

The invention discloses a Hall element based net-type ferromagnetic component surface crack detector. The detector comprises a probe subassembly and a drive subassembly; the probe subassembly comprises Hall elements arranged in an array form or a Hall element subassembly, a data acquisition processi...

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Hauptverfasser: HAN LIANG, LIAO CHANGRONG, WANG BINBO, SHI XIANGCONG, WEI WENXIONG, XIE YUNSHAN
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a Hall element based net-type ferromagnetic component surface crack detector. The detector comprises a probe subassembly and a drive subassembly; the probe subassembly comprises Hall elements arranged in an array form or a Hall element subassembly, a data acquisition processing unit, and a shell for packaging the Hall elements arranged in an array form or the Hall element subassembly and the data acquisition processing unit; and an array is aligned with a to-be-detected surface of a work piece, and is used for acquiring a magnetic flux leakage signal of the surface crack of the work piece. The Hall element based net-type ferromagnetic component surface crack detector can avoid omission to the surface crack defects of the ferromagnetic component, can realize the real-time acquisition for the magnetic flux leakage information, and consequently, can obtain the position of the defect and the distance between the defect and a component reference position, thereby helping operators to analyz