Robert Boschgmbh

Ruslan Khalilyulin

Andrea Visconti

Francesco Diazzi

Johannes Classen

Amin Jemili

Falk Roewer

Wolfram Geiger

Guangzhao Zhang

Matthias Meier

Gregor Wetekam

Thomas Zebrowski

A sensor system. The sensor system comprises a MEMS gyroscope, comprising at least: a seismic mass, which can be excited to vibrate and has at least one electrode assembly for capacitively detecting a measurement signal, a drive circuit for generating a drive voltage for exciting and maintaining a defined vibratory movement of the seismic mass, there being a parasitic capacitive coupling between the drive circuit and the at least one electrode assembly, a detection circuit for reading out the measurement signal and for generating an angular rate signal on the basis of the measurement signal, characterized by circuitry means for compensating for an offset of the angular rate signal on the basis of the drive voltage.

Sensor system and method for compensating for an offset of an angular rate signal

A sensor system. The sensor system includes: an analog processing arrangement comprising: a drive circuit which generates an analog drive signal to drive an oscillating element of a microelectromechanical gyroscope; a detection circuit configured to generate analog rotation-rate and quadrature signals from a signal detected by the gyroscope; an analog-to-digital converter(s) configured to convert the analog rotation-rate and quadrature signals into digital rotation-rate and quadrature signals; a compensation circuit, which, in a measurement operating mode of the sensor system, compensates a quadrature effect on the analog quadrature signal using at least one quadrature compensation value; and a digital processing arrangement comprising a digital processing circuit, which, in the measurement operating mode of the sensor system, is configured to compensate a temperature-dependent quadrature-induced zero rate offset ZRO of the digital rotation-rate signal using at least one ZRO compensation value and temperature information.

Compensating a temperature-dependent quadrature-induced zero rate offset for a microelectromechanical gyroscope

A sensor system having a MEMS gyroscope. The sensor system includes a seismic mass for acquiring a measuring signal, a drive circuit, an acquisition circuit for reading out and demodulating the measuring signal, whereby a rate of rotation signal and a quadrature signal phase-shifted relative to the rate of rotation signal is generated, and a digital processing circuit for compensating an offset of the digitized rate of rotation signal using the digitized quadrature signal. The acquisition circuit and the digital processing circuit encompass a rate of rotation circuit, and a quadrature circuit for generating and processing the quadrature signal and generating a compensation signal for the offset compensation of the digitized rate of rotation signal. At least part of the quadrature circuit is operable in at least one other operating mode than the rate of rotation circuit, independently of the operating mode of the rate of rotation circuit.

Sensor system, method for operating a sensor system

A coupling of two electronic apparatuses for a wireless information exchange. The coupling is authenticated through the evaluation of motion patterns previously executed by the apparatuses.

Electronic apparatus, system for wireless information exchange, and method for coupling two apparatuses

Recalibrating a micromechanical sensor. The sensor is assigned a signal processing device for correcting the sensor signal on the basis of at least one previously determined initial trim value that is selected such that, given a defined sensor excitation, a production-related deviation of the sensor signal from a target sensor signal is compensated. The method for recalibrating the sensor includes: applying a defined electrical test excitation signal to the sensor structure, acquiring the corresponding sensor response signal, ascertaining a trim correction value for the at least one initial trim value on the basis of a previously determined relation between the sensor response signal and the trim correction value, and determining at least one current trim value for correcting the sensor signal, the determination of the at least one current trim value taking place on the basis of the at least one initial trim value and the ascertained trim correction value.

Method for recalibrating a micromechanical sensor, and recalibrateable sensor

Apparatuses and methods are described for processing the sensor signal of a sensor component, a noise signal that is generated as a function of specific properties of an interference signal component of the sensor signal and/or of specific properties of a temperature signal of a temperature sensor being mixed into a useful signal component of the sensor signal.

Apparatuses and methods for processing a sensor signal

A yaw rate sensor having a drive for exciting an oscillation of an oscillatory mass, the drive having at least one drive amplifier circuit, and having a detector for detecting a displacement of the oscillatory mass, the detector having at least one detector amplifier circuit, either a low bias current being able to be set for operating the drive amplifier circuit and/or the detector amplifier circuit in an energy-saver mode, or a higher bias current being able to be set for operating the drive amplifier circuit and/or the detector amplifier circuit in a normal mode.

Growing community of inventors

Munich, Germany

Ruslan Khalilyulin