Position sensing method with window of detector elements providing a unique logic output

摘要

A position sensor is disclosed with detector elements 11 coupled to a set of output lines 20 according to a connection pattern 30. An object 2 triggers a window subset of the detector elements 11, causing a logic output on the set of output lines 20. Some output lines 20a are coupled to more that one detector element 11. However, the connection pattern 30 is arranged such that for any window subset of the detector elements falling in a variable length range, a unique logic output is provided on the set of output lines 20 to identify the position of the object. A sensing method and search process for determining the connection pattern are also disclosed.