Design and calibration of a multi-channel low voltage data acquisition system

In this paper the design, fabrication and calibration of a battery powered multi-channel low voltage data acquisition system has been described. The aim of the development of the system is to acquire bio-potentials from multiple locations of the human skin simultaneously. Measurement of such bio-pot...

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Bibliographic Details
Published in:	2018 IEEE Applied Signal Processing Conference (ASPCON) pp. 119 - 123
Main Authors:	Sarkar, Arindam, Biswas, Somen, Datwal, Gaytri, Debnath, Sayantan, Goswami, Bhaswati, Ghosh, Ratna
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-12-2018
Subjects:	accuracy Biomedical measurement Calibration Data acquisition data acquisition system EDA Instruments Linearity Low voltage precision Sensitivity static characteristics
Online Access:	Get full text
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Summary:	In this paper the design, fabrication and calibration of a battery powered multi-channel low voltage data acquisition system has been described. The aim of the development of the system is to acquire bio-potentials from multiple locations of the human skin simultaneously. Measurement of such bio-potentials is a particular application of the endosomatic measurement of electrodermal activity (EDA). Each of these multiple signals, which are usually low voltages of the order of microvolts and millivolts, are acquired in a differential mode. These differential voltages are stored simultaneously and then processed using a dedicated micro-controller. The micro-controller based design adopted for this system makes it more reliable, with higher resolution and controlled sampling rate. Calibration of this system has been performed and statistical parameters have been determined to quantify the accuracy, precision, linearity and sensitivity of this system for the stated application. It has been observed that the performance of the developed data acquisition system is high and it is suitable for measuring bio-potentials from four (4) locations simultaneously and reliably.
DOI:	10.1109/ASPCON.2018.8748769