SENSOR FUNCTION FOR CONTROLLING AT A VARIABLE TRANSMISSION FREQUENCY FOR THE PURPOSE OF DETECTING CONTAMINATION
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Abstract
In a method for functional testing of a mechanical vibration sensor, a vibration signal is generated on the vibration component of the vibration sensor with the aid of a periodic excitation signal, the frequency of which excitation signal is varied, and a post-vibration process of the vibration component of the vibration sensor is analyzed once the excitation signal has been switched off.
14 Citations
32 Claims
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1-16. -16. (canceled)
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17. A method for functional testing of a mechanical vibration sensor, comprising:
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generating a vibration signal on a vibration component of the vibration sensor with the aid of a periodic excitation signal wherein the frequency of the periodic excitation signal is varied; and analyzing a post-vibration process of the vibration component of the vibration sensor once the excitation signal has been switched off. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A measuring system for a motor vehicle having functional testing, comprising:
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at least one ultrasonic sensor unit; and signal generator configured to generate a periodic function test signal as signal for a vibration component of the sensor unit, wherein the function test signal is variable in its frequency. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. A distance measuring system for obstacle detection, comprising:
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an ultrasonic transmitter; an ultrasonic receiver; an excitation unit configured to achieve periodic excitation of the transmitter, wherein variable frequencies are used for the periodic excitation of the transmitter; and an evaluation unit configured to evaluate the signal from the receiver.
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Specification