INDUCTIVE LOOP DETECTINGS SYSTEM AND THE PROCESS FOR THE APPLICATION THEREOF

申请公布号：ZA8204554(B)

申请号：ZA19820004554

申请日期：1982.06.25

申请公布日期：1983.04.27

申请人：

VILATI VILLAMOS AUTOMATIKA FOEVALLALKOZO ES GYARTO VALLA

发明人：KUELK K

分类号：G01V3/11;G01V3/10;G08G1/065

主分类号：G01V3/11

摘要：An eddy-current loop detector operates to sense the presence of an electrically conductive object by applying D.C. onto a conducting loop so that a permanent magnetic field is induced, which field partly penetrates into the object; ensuring the quick cessation of self-inductive transient operation of the loop when the D.C. is switched off; and measuring the change in the part of the flux passing through the measuring loop arising from eddy-currents induced in the conductive object, and evaluating such change while the relatively slowly decreasing flux is maintained. By repeating these operations with the desired frequency, the eddy-current detector is well suited for continuous measuring of the position of the object.

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