发明名称 |
Inductive sensor arrangement with field coils and sense coils, and methods for detecting ferrous objects |
摘要 |
The inductive sensor arrangement for detecting metal objects hidden in a surrounding medium comprises a pair of field coils for generating an alternating magnetic flux by a sequential excitation with an AC-current and a pair of sense coils respectively mounted inside each associated field coil in an orientation to the axes of each of said field coils such that essentially no voltage is induced in said sensor coils in an environment free of a metallic object. If a metallic object comes into the vicinity of the inductive sensor four characteristic voltage value sets are produced by the sense coil pair which become subject of an algorithmic processing for defining a position and distinction criterion in respect to said hidden metallic object. The sensor arrangement has the advantage of a single point measurement resulting in an accurate position discrimination for a hidden metallic object like a rebar in concrete.
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申请公布号 |
US6541965(B1) |
申请公布日期 |
2003.04.01 |
申请号 |
US20000687641 |
申请日期 |
2000.10.13 |
申请人 |
HILTI AKTIENGESELLSCHAFT |
发明人 |
BINDER ALBERT;GOLDER ROGER |
分类号 |
G01V3/10;(IPC1-7):G01V3/10;G01V3/165;G01N27/72 |
主分类号 |
G01V3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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