Induktive Drehzahlsensoren

Inductive rotational speed sensors

Capteurs inductifs de vitesse de rotation

Abstract

An inductive rotational speed sensor assembly (100) includes a first PCB (10) with a transmitter coil (12) configured to convert an alternating electrical input into an alternating magnetic field. A second PCB (20) is operatively connected to the first PCB for relative rotation and includes a resonance coil (25; 25, 25A) in combination with a capacitor configured to couple to the alternating magnetic field of the first PCB to output a modulating position signal. The first PCB includes a receiver coil (15; 15, 15A) configured to receive the first and the modulating position signal and to output a signal indicative of rotational speed of the second PCB relative to the first PCB, derived from the frequency or time separation between pulses in the received signal indicating a high coupling between transmitter and receiver coil.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (8)

    Publication numberPublication dateAssigneeTitle
    EP-0198272-A2October 22, 1986Horst Prof. Dr. ZieglerTransducer for transferring a mechanical input value into an electrical output value
    EP-2108963-A2October 14, 2009Prof. Dr. Horst Ziegler und Partner GbRDevice for detecting a rotation of a rotary element
    US-2008164869-A1July 10, 2008SappelInductive Angular-Position Sensor
    US-2011025349-A1February 03, 2011Mark Anthony Howard, Darran KreitInductive position detector
    US-4425511-AJanuary 10, 1984Amnon BroshPlanar coil apparatus employing a stationary and a movable board
    US-6043644-AMarch 28, 2000Cesm Centre Suisse D'electronique Et De Microtechnique Sa - Recherche Et DeveloppementDevice for detecting position and movement by using magnetic field variation
    US-6534970-B1March 18, 2003Synaptics (Uk) LimitedRotary position sensor and transducer for use therein
    US-8129985-B2March 06, 2012Sagentia LimitedPosition encoder

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle