Aktiebolaget Skf

Ab Skf

Jens Graf

Armin Olschewski

Hendrik Anne Mol

Rico Dittmar

Arno Stubenrauch

Sebastian Ziegler

Defeng Lang

Johannes Biegner

Laurens Verhulst

Simon Hubert

Christian Knoche

Milen Kourtev

Russell Bugden

Roberto Moretti

Bernd Stephan

Sylvain Chaussat

Georg Tenckhoff

Damien Joucgnoux

Silvano Sema

Johannes Schaefer

Arnaud Pinon

Olivier Cheve

Cornelia Haag

Luk Geens

Michael Gierling

Andre Tubbesing

Michael Eller

Goran Christiansson

Marc Defossez

Charlotte Olivier

Patrick Mayer

Kris Smolders

Clemens Hütten

A condition monitoring device configured to be mounted on a machine for sensing, for example, vibrations produced by the machine during operation, includes a base, a printed circuit board assembly lying in a first plane, and first and second fasteners, each having a longitudinal axis, lying in a second plane perpendicular to the first plane, the first and second fasteners extending through the printed circuit board assembly and into the base. A third plane is perpendicular to the first and second planes and is located halfway between the longitudinal axes of the first and second fasteners. An integrated power supply is connected to the printed circuit board assembly, and at least two active sensing cells, such as vibration sensors, are arranged symmetrically relative to the second plane and/or symmetrically relative to the third plane.

Wireless machine condition monitoring device

A device for determining a rotational speed and a vibration of a wheel end of a vehicle, in particular a truck, is disclosed. The device includes a single sensor measuring a signal during a rotation of the wheel end. The sensor is arranged at the wheel end, and a determination unit for determining the rotational speed and the vibration of the wheel end using the signal of the single sensor is provided.

Device for determining a rotational speed and a vibration of a wheel end of a vehicle

A lean signal processing method, a bearing monitoring unit and a wheel monitoring unit using the lean signal processing method are presented that are especially suitable for embedded systems. The invention is based on the basic inventive idea of digitally adjusting measured signals that are to be analyzed in different frequency bands to thereby enable to have a single common analogue front end and a single common digital spectrum analyzer back end. This will save analogue components and relax the need for memory in addition to a lean signal processing.

Signal processing method and device

In a planetary gear arrangement with a planetary gear which includes a rotating part and a non-rotating part, and with a sensor module for sensing properties of the planetary gear, the sensor module includes a sensor as well as a first sending/receiving unit and a second sending/receiving unit, wherein the sensor and the first sending/receiving unit are coupled and arranged at the rotating part, and wherein the second sending/receiving unit is arranged at the non-rotating part, wherein the first sending/receiving unit and the second sending/receiving unit are configured for being inductively coupled, wherein the first sending/receiving unit includes an energy storage, wherein the energy storage is configured for being charged during each turn of the rotating part for powering the sensor via the first sending/receiving unit in order to perform measurements.

Planetary gear arrangement

A sensor module configured to detect a vibration of a mechanical component includes a base connectable to the mechanical component, at least one spacer extending from the base, and a circuit board connected to the base by the spacer such that a mechanical vibration is transmitted from the component to the base to the spacer to the circuit board. The circuit board includes a circuit and wirelessly transmits signals indicative of a detected vibration. The spacer includes a body portion and a pin portion projecting from an end of the body portion. The pin portion extends into the at least one hole, and the body portion is blocked from passing though the at least one hole by contact with a region of a first side of the circuit board surrounding the at least one hole.

Spacer and sensor module for detecting a vibrational behavior of a mechanical component including the spacer

A device for detecting a pressure change in a tire includes a first temperature sensor located outside the tire being configured to produce a first temperature signal indicative of a first temperature, an input apparatus configured to receive the first temperature signal from the first temperatures sensor, and to receive a second temperature signal from a second temperature sensor being indicative of a second temperature, and to receive a tire pressure signal from a tire pressure sensor being indicative of a tire pressure of the tire, and a processor configured to output an evaluation signal including information about a change of tire pressure based on the pressure signal and based on the first temperature signal and the second temperature signal. The processor is configured to evaluate the pressure signal only if a temperature difference between the first temperature and the second temperature is smaller than a predefined limit value.

Device and method for detecting a pressure change in a tire using a plurality of temperature signals

A device for detecting a pressure change in a tire includes a first temperature sensor located outside the tire, the first temperature sensor being configured to produce a first temperature signal indicative of a first temperature, an input apparatus configured to receive the first temperature signal from the first temperatures sensor, and to receive a second temperature signal from a second temperature sensor, the second temperature signal being indicative of a second temperature, and to receive a tire pressure signal from a tire pressure sensor, the tire pressure signal being indicative of a tire pressure of the tire, and a processor configured to output an evaluation signal including information about a change of tire pressure based on the pressure signal and based on the first temperature signal and the second temperature signal.

A module includes a first partial housing and a second partial housing, wherein the first partial housing and the second partial housing together form a recess, a circuit board disposed in the recess; and an encapsulation mass, which closes the recess. A material from which the first partial housing is manufactured and a material from which the second partial housing is manufactured have a difference in thermal expansion coefficients that is at most 10% of the largest value of the two thermal expansion coefficients, the first partial housing includes a sealing structure and the second partial housing includes a counter-sealing structure, and at least one of the sealing structure and the counter-sealing structure is configured to extend into the other of the sealing structure and the counter-sealing structure.

Module for a tire pressure monitoring system

A module for detecting a physical value of a gaseous medium includes a discrete component including a detection section on a surface, the discrete component being configured to detect the physical value of the gaseous medium that acts on the detection section, a supply-line component configured to introduce the gaseous medium to the detection section, a seal in contact with the supply-line component and the surface of the discrete component and configured to fluidly seal the detection section on the surface of the discrete component. The seal includes a seal lip configured to enclose the detection section such that the seal forms a sealing space, the sealing space including the detection section and being separated from an external space by the seal.

Module for detecting a physical value of a gaseous medium

A module for detecting a vibrational behavior of a mechanical component includes an attachment component configured to be rigidly mechanically connected to the mechanical component in order to absorb a mechanical vibration of the mechanical component, a circuit board including a circuit, the circuit board being configured to detect the mechanical vibration of the mechanical component and, based on the detected vibration, to wirelessly transmit a signal indicative of the vibrational behavior, and at least one spacer mechanically connecting the circuit board to the attachment component such that the mechanical vibration is transferable from the attachment component to the circuit board.

Module for detecting a vibrational behavior of a mechanical component

The invention refers to a device for attachment to a rotating part () of a railway vehicle incorporating an arrangement, which is adapted, during movement of the railway vehicle, to detect and evaluate parameters related to the railway vehicle service and/or to an incipient fault state of wheel bearings () in the railway vehicle, and which device () is arranged to emit signals representative for the detected and evaluated parameters.

Device for attachment to a rotating part of a railway axle

A wheel monitoring apparatus includes a measuring and evaluation unit designed to be fastened to the wheel in the region of at least one wheel nut or bolt of the wheel. The wheel monitoring apparatus includes at least one sensor for detecting a characteristic variable for a state of a wheel bearing and at least one sensor for detecting a tire pressure of a tire of the wheel.

Wheel monitoring device

A device for attachment to a motor vehicle wheel includes an arrangement which, during movement or driving of the motor vehicle, detects vibrations which occur, evaluates the vibrations for an incipient fault state of a wheel bearing of the vehicle wheel, and delivers a signal when the monitoring or evaluation yields or indicates the incipient fault state.

Growing community of inventors

Schweinfurt, Germany

Jens Graf