| 摘要 |
<p>An inductive sensory system generally comprises a sense inductor (20), a reference sense inductor, an oscillator (22), a feedback control loop, and a comparator (30). The oscillator (22) is connected to both the sense inductor (20) and the reference sense inductor. Upon the oscillator (22) being connected to the reference sense inductor, the feedback control loop establishes a fixed reference level. Upon the sense inductor (20) being connected to the oscillator (22), the comparator (30) compares the state of the sense inductor (20) against a threshold that is derived from the fixed reference level to determine the change in inductance of the sense inductor (20).</p> |
