Micromechanical clocking system with improved timing precision
AssigneeRobert Bosch GmbH
InventorsGerhard Lammel, Timo Giesselmann
Life of this patent
Estimating the term…
Abstract
A system having a micromechanical clocking system component a clocking system component. The system includes a micromechanical oscillation element, which is able to be induced to an oscillation with a natural frequency, and a first circuit, which generates from the natural frequency of the oscillation element a clock frequency which is pre-calibrated to a predefined setpoint clock frequency; a memory for the remaining deviation of the clock frequency from the setpoint clock frequency, the deviation having been individually determined for the clocking system component; and a processing unit which generates a reference time basis for at least a part of the system on the basis of the generated clock frequency and the stored deviation.
Claims13
A system, comprising:
- a clocking system component, including:
- a micromechanical oscillation element, which is able to be induced to an oscillation with a natural frequency, and
- a first circuit configured to generate from the natural frequency of the oscillation element a clock frequency, that is pre-calibrated to a predefined setpoint clock frequency,
- wherein a remaining deviation of the clock frequency from the setpoint clock frequency is stored, the deviation having been individually determined for the clocking system component;
- and
- a processing unit configured to generate a reference time basis for at least a part of the system based on the generated clock frequency and the stored deviation.
A method for operating a sensor system having a micromechanical yaw rate sensor in whose sensor structure at least one oscillation element is developed, in which the oscillation element is induced to oscillations with a natural frequency for a measured signal acquisition, the method comprising the following steps:
- generating a clock frequency from the natural frequency of the oscillation element, which is pre-calibrated to a predefined setpoint clock frequency and which determines an output sampling rate for sensor data of the yaw rate sensor;
- storing an individually remaining deviation of the clock frequency for the yaw rate sensor from the setpoint clock frequency;
- and
- based on the generated clock frequency and the stored deviation, generating a reference time basis for at least a part of the sensor system.
Dependencies are inferred from the claim text.