Displacement sensor and distance adjustment apparatus
AssigneeJapan System Development Co., Ltd.
InventorsYoshiichi YOSHIDA, Hiroki TOMINO
Life of this patent
Estimating the term…
Abstract
A displacement sensor includes a coil, an inverter electrically connected to the coil, the inverter being configured to generate an oscillation signal, a reducer electrically connected between the coil and an output terminal of the inverter, the reducer being configured to reduce the strength of the oscillation signal, and a frequency detector electrically connected to the inverter, the frequency detector being configured to detect an oscillation frequency of an oscillator circuit in response to a distance between a measurement target and the coil, the oscillator circuit including the coil, the inverter, and the reducer and having an oscillation frequency of 30 MHz or higher.
Claims13
A displacement sensor comprising:
- a coil;
- an inverter electrically connected to the coil, the inverter being configured to generate an oscillation signal;
- a reducer electrically connected between the coil and an output terminal of the inverter, the reducer being configured to reduce the strength of the oscillation signal, and
- a frequency detector electrically connected to the inverter, the frequency detector being configured to detect an oscillation frequency of an oscillator circuit in response to a distance between a measurement target and the coil, the oscillator circuit comprising the coil, the inverter, and the reducer and having an oscillation frequency of 30 MHz or higher.
Dependencies are inferred from the claim text.