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http://dx.doi.org/10.17703/JCCT.2018.4.4.379

Digital Transmission and Isolation of Multichannel Analog Signals using a Single Optocoupler  

Nam, Jin Moon (Dept. of Pierson College, Pyeongtaek Univ.)
Publication Information
The Journal of the Convergence on Culture Technology / v.4, no.4, 2018 , pp. 379-385 More about this Journal
Abstract
The transmission of analog signals through Galvanic isolators often results in signal distortion. Optocoupler gain is temperature dependent and also varies considerably, which would cause deformations of analog signals. Digital isolators have better noise immunity than analog, and digital transmission is a cost-effective noise rejection method for multichannel analog signals, which can solve temperature-induced signal distortion problems. Digital data, converted from multichannel analog signals, can be transmitted through a single optocoupler. We proposed advanced circuits and data frame for robust transmission of multichannel analog signals. Numerical experiments were performed to investigate distortion of multichannel analog signals during transmission.
Keywords
Multichannel; Analog Signal; Digital Conversion; Optocoupler; Isolation;
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