Measuring range shift for smart air springs

摘要

An air spring height sensor (100) is provided which comprises a receiver (101) for receiving a height signal and an evaluation unit (200). The receiver is adapted for being mounted to an air spring so as to sense a height signal with respect to said air spring. The evaluation unit comprises an input terminal (201), a multiplexer (240), a first signal branch (210) starting from the input terminal and terminating at a first multiplexer input (241), and a second signal branch (220) starting from the input terminal and terminating at a second multiplexer input (242). The first signal branch includes a first amplitude limiter (211) being adapted to cut off the amplitude above a predetermined first threshold value. The multiplexer is adapted to select a measurement signal from one of the inputs of the multiplexer.

主权项

1. An air spring height sensor comprising:
a receiver for receiving a height signal; and an evaluation unit, wherein the receiver is adapted for:
being mounted to an air spring so as to sense the height signal with respect to said air spring, andproviding the height signal to the evaluation unit, wherein the evaluation unit comprises:
an input terminal,a multiplexer,a first signal branch starting from the input terminal and terminating at a first multiplexer input, anda second signal branch starting from the input terminal and terminating at a second multiplexer input, wherein the first signal branch includes a first amplitude limiter being adapted to cut off the amplitude above a predetermined first threshold value, wherein the second signal branch includes a second amplitude limiter which is adapted to cut off the amplitude above a predetermined second threshold value, wherein the second threshold value is higher than the first threshold value, and wherein the multiplexer is adapted to select a measurement signal from one of the inputs of the multiplexer for leading through based on a value of the height signal.