We are thrilled to announce the release of OASIS-UROS - the Open Acquisition System for IEPE Sensors - Upgraded, Refined, and Overhauled Software! OASIS-UROS continues the previously published Open Acquisition System for IEPE Sensors (OASIS), a fully open acquisition system for IEPE (also called ICP) sensors. While still building on the ESP32 microcontroller, this version improves the overall performance by switching to an SD card caching system and upgrading the analog-digital converter to an AD7606C-18, which has a higher resolution, provides eight channels, oversampling, and software-adjustable voltage ranges. Also improved is the IEPE front-end and power supply, as well as the firmware of the acquisition system, which can now achieve a sample rate of up to 36 kHz while sampling all eight channels.
The corresponding paper documents the hardware and software of OASIS-UROS and provides all materials required to reproduce the open acquisition system. OASIS-UROS was validated against commercial hardware and software in an experimental modal analysis context, which showed that the system performs close to the commercial one in some aspects with respect to the utilized test case. While OASIS-UROS cannot match the full performance of the commercial system, the developed system can be a viable alternative for students, people in academia, or smaller companies that have a constrained budget or require complete insight as well as adaptability of the hardware and software.
You can find all the details in the preprint avilable here: https://www.researchgate.net/publication/386177933_OASIS-UROS_Open_Acquisition_System_for_IEPE_Sensors_-_Upgraded_Refined_and_Overhauled_Software