Patent ID: 8676521

Claim:
A system for acquiring data on vibrations, comprising: a sensor configured to output a vibration signal in response to sensing the vibrations; a coupling configured to remove direct current bias voltage from the vibration signal and to output an alternating current voltage signal; a converter configured to convert the alternating current voltage signal to a current signal; a logarithmic amplifier configured to compress a dynamic range of the current signal and output an output signal; an anti-aliasing filter configured to attenuate signals outside an operating frequency range of the analog-to-digital converter; and an analog-to-digital converter configured to digitize the output signal and output a digital signal, wherein the analog-to-digital converter comprises a first analog-to-digital converter, wherein the first analog-to-digital converter has a first resolution lower than a second resolution of a second analog-to-digital converter used to convert the current signal without compression of the current signal by the logarithmic amplifier.