This paper describes a measurement-circuit design approach based on switched-capacitor filters, and an analog vibroacoustic signal-matching-and-conversion device. We also develop an adaptive control algorithm for measurement-circuit parameters, and find that analog matching devices can be used advantageously for and monitoring and diagnostics of process status in industrial equipment.
MAXIM Corporation, MAX262 Microprocessor Programmable Universal Active Filters, https://www.maximintegrated.com/en/products/analog/analog-filters/MAX262.html, acc. May 29, 2018.
Texas Instruments, Programmable Gain Instrumentation Amplifier, www.ti.com/lit/ds/symlink/pga204.pdf, acc. May 29, 2018.