Continental Teves, Ag and Company Ohg

Sören Lehmann

Josko Kurbasa

Ralf Hartmann

Hilmar Müller

Andreas Schirling

Christian Burgdorf

Frank Grunwald

A transformer including a primary circuit with a primary inductor, a first secondary circuit with a first secondary inductor that is galvanically isolated from the primary inductor and coupled to the primary inductor, a second secondary circuit with a second secondary inductor that is galvanically isolated from the primary inductor and coupled to the primary inductor. The second secondary inductor is implemented redundantly with respect to the first secondary inductor, in particular such that the first secondary inductor encloses the second or the second encloses the first. The first and second secondary inductors are connected to one, or each to one, DC voltage source as well as each to a test circuit with a tapping point for tapping off a test voltage.

Transformer with test circuit

A method for testing a sensor with a primary inductor which is galvanically isolated from first and second secondary inductors which are respectively coupled inductively to the primary inductor, including: calculating a sensor output signal, wherein the sensor output signal is dependent on the coupling between the primary inductor and the first secondary inductor as well as that between the primary inductor and the second secondary inductor; determining a first electrical variable, which is different from the sensor output signal; comparing the first electrical variable with a first limiting value in order to determine whether the sensor is in a faulty state, as well as to a corresponding device and to a sensor having the device.

Method for testing a sensor

A method for testing a transformer including a first inductance and a second inductance, which is galvanically isolated from the first inductance, the inductances being connected in a first circuit and in a second circuit, correspondingly, the method comprising: &#x2014;applying a DC voltage between a first circuit point and a second circuit point in the first circuit; &#x2014;tapping off a test voltage between two circuit points in the first or second circuit, wherein one of the two circuit points is different than the first circuit point and the second circuit point; and &#x2014;testing the transformer on the basis of a comparison between the DC voltage and the test voltage.

Method for testing a transformer

A position sensor connected to first and second electric signal sources to output a first electric signal with a first frequency and a second electric signal with a second frequency. The position sensor includes: a primary coil generating a magnetic alternating field with the first frequency; a first and a second secondary coil, the first and second secondary coils each magnetically coupled to the primary coil by the position transmitter, and third and fourth electric signals induced in the first and second secondary coils respectively by the generated magnetic alternating field; a frequency converter converts the third and fourth electric signals into respective first and second intermediate frequency signals, the frequency converter connectable to the second electric signal source. A Goertzel filter bank demodulates the first intermediate frequency signal to obtain a first demodulated signal and demodulates the second intermediate frequency signal to obtain a second demodulated signal.

Inductive position sensor with frequency converter and Goertzel filter for analyzing signals

The invention relates to an inductive angle sensor that includes a measuring element able to be positioned, within an angle measurement range, in different angle-positions about a rotational axis, as well as a coil that is at a distance from said measuring element. The surface of the measuring element is at a different distance from the coil in each angle-position, within said angle measurement range.

Eddy current-based angle sensor

Displacement sensor arrangement including at least one primary coil, at least a first and a second secondary coil and at least one magnetically soft coupling element, which magnetically couples the primary coil and the two secondary coils, the displacement sensor being designed so that a position and/or deflection depending on the magnetic coupling between the primary coil and at least the first and second secondary coil is detected, the displacement sensor arrangement having a signal processing unit, which is designed to perform digital signal processing of at least one electrical variable of the two secondary coils and determine the position and/or deflection, the signal processing unit having at least one Goertzel filter.

Amplitude evaluation by means of a goertzel algorithm in a differential transformer displacement sensor

The invention specifies a sensor arrangement for a brake system for braking a wheel in a vehicle, which brake system includes a travel sensor for detecting a position of a brake pedal of the brake system, wherein the travel sensor is provided for detecting operation of the brake pedal based on the position of the brake pedal and for outputting a signal which indicates operation of the brake pedal.

Growing community of inventors

Frankfurt-am-Main, Germany

Sören Lehmann