Flat-type proximity sensor

Abstract

The flat-type proximity sensor detects a detection object in proximity to a plate-shaped member, and includes a head body, a cable, and an amplifier. The head body includes a case member, a coil, and a head board. The case member has a first surface and a second surface. The coil and the head board are accommodated in the case member, the first surface includes a detection surface, and the second surface is installed on the installation surface. The coil generates a magnetic field by applying a pulse-shaped excitation current. The head board includes a head circuit through which a detection current flows due to a change in a magnetic field. The cable guides the detection current from the head circuit to the amplifier. The amplifier includes a processing circuit that performs processing related to detection of the detection object based on the change in the detection current.

Dependencies are inferred from the claim text.