Comparison of electromagnetic interference mitigation schemes in signal transmission
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Which transmission method is least susceptible to interference when transmitting signals from on-site instruments to the control room? Such as 4–20mA signal computer cables, Modbus communication, FF bus communication, optical fibers, etc. Thank you, Haiyou, for actively participating in the discussion!
Personally, I think it should be fiber optic, as it offers a faster transmission speed; however, most of the instruments on site still use 4–20mA for transmission
This post was last edited by ssln123 on 2017-5-15 at 10:48. Optical cables are the least susceptible to interference, as they transmit light signals; all other types transmit electrical signals, and those are low-voltage signals as well, so they are naturally subject to interference to varying degrees. But costs, reliability, safety, and so on need to be taken into account; therefore, each case must be analyzed on its own merits.
Indeed, optical cables are definitely number one. Which one is in second place?
It refers to the impact of external strong magnetic fields on signal transmission, not the signal itself! @1111111 (7 ones)
There is no first or second; the reliability of the signals themselves is more or less the same. . . I can see you’ve gotten better at handling that signal