Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position
Reexamination Certificate
2005-07-19
2005-07-19
Bui, Bryan (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
Orientation or position
C250S227170, C324S207120, C324S207260, C340S562000, C702S052000
Reexamination Certificate
active
06920411
ABSTRACT:
A proximity sensor has a resonant circuit which when stimulated by a pulse produces a signal with decaying oscillations. The number of such oscillations above a signal threshold varies in relation to the distance between a metal object and the proximity sensor. The sensor operation is configured by deriving a function that defines how the performance of a given proximity sensor deviates from performance reference data. The function is employed to normalize the count of oscillations produced by the given proximity sensor and the normalized count is used to determine presence of an object. By normalizing sensor performance, common configuration data can be used to setup a given proximity sensor without having to take into account specific performance variations of that sensor.
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patent: 6014022 (2000-01-01), Demma et al.
patent: 6025711 (2000-02-01), Demma et al.
patent: 6348862 (2002-02-01), McDonnell et al.
patent: 6650111 (2003-11-01), Christensen
Christensen Timothy A.
Fulmer John Eugene
Bui Bryan
Eaton Corporation
Le John
Union Marvin L.
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