Patent ID: 7757556

Claim:
A method for diagnosing a component, comprising: providing a sensor for structure-borne noise; providing a device for analyzing a received measurement signal; measuring the measurement signal via the sensor; outputting the measurement signal by the sensor in a bandpass filtered manner by virtue of its mechanical resonance frequency, a capacitance of the sensor and an inductance of the sensor; determining an occurrence with which a level of the measurement signal exceeds a first predefined threshold value; and generating an error report signal if the ascertained occurrence exceeds a second predefined threshold value, wherein the measurement signal for determining the occurrence is supplied to a digital input of a microcontroller, wherein the microcontroller polls a present value of the measurement signal at the digital input at predefined time intervals, and wherein the time intervals are longer, by a magnitude of at least one, than a maximal period duration of the signal portions of a relevant frequency range in the measurement signal.