Patent ID: 9349281
Filing Date: 2016-05-24
CPC Classification: B60G,B60N,F16F,G08C,H04B

Claim Text:
1. An air spring height sensor comprising: a transmitter unit for transmitting a height measuring signal; a receiver unit for sensing a height signal; a carrier frequency switching unit; and an evaluation unit, wherein the transmitter unit is switchable between a first carrier frequency and a second carrier frequency of a height measuring signal, wherein the evaluation unit comprises a frequency filter being switchable between the first carrier frequency and the second carrier frequency, wherein the carrier frequency switching unit is adapted for switching the frequency filter at the receiver unit from the first carrier frequency to the second carrier frequency at a predetermined first point of time (t wherein the carrier frequency switching unit is adapted for periodically switching the frequency filter from the first carrier frequency to the second carrier frequency of the receiver unit at a periodic predetermined first point of time (t