Patent ID: 11867536
Assignee: ASM AUTOMATION SENSORIK MESSTECHNIK GMBH
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A magnetostrictive position sensor (100) according to the time-of-flight principle of a mechanically-elastic density wave comprising:
a flexible or semi-flexible circuit board;
a waveguide unit (1) with a magnetoelastic waveguide,
a position-transmitting encoder magnet, which can be moved without contact, along the waveguide in its running direction, and
a detector unit arranged at a defined longitudinal position of the waveguide unit with a detector coil and an electronic evaluation circuit,
wherein the detector coil is formed in or on a semiconductor chip substrate and the electronic evaluation circuit is formed in or on the same semiconductor substrate as the detector coil;
the detector coil comprising at least one flat detector coil, the spiral plane of the flat detector coil being parallel to the direction of the waveguide,
wherein the semiconductor substrate is a semiconductor chip that is embodied and mounted as a bare chip, the bare chip being provided on the rear side of the circuit board,
wherein a base body, in which the waveguide is located, is fastened in the length region of the bare chip on the front side of the circuit board opposite the bare chip, so that the waveguide and the bare chip comprising the flat detector coil are located on opposite sides of the circuit board.