Magnetic detection of air gaps formed at breaks in conveyor belt cards

申请公布号：US4864233(A)

申请号：US19850761971

申请日期：1985.08.01

申请公布日期：1989.09.05

申请人：

COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION

发明人：HARRISON, ALEXANDER

分类号：G01N27/82

主分类号：G01N27/82

摘要：There is disclosed herein a method and apparatus wherein conveyor belt cords are first de-gaussed to remove any stray magnetic fields, and then longitudinal unidirectionally magnetized. The belt is then magnetically scanned and the electrical output signal is passed through a low pass filter in order to produce a break signal indicative of breaks in the magnetically permeable cords of the conveyor belt.

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