Electronic jamming source control system from the first space radiation interference
Electromagnetic radiation (EMI) from the space mainly by the electricity network, electrical equipment such as transient, lightning, radio, television, radar, high-frequency induction heating equipment generated, commonly referred to, also known as radiation interference, signal Fence and its distribution is extremely complex. If the PLC system is placed in the RF field, it recovered to the radiation interference, it mainly affects mainly through two paths; one is internal radiation directly to the PLC, interference by the sensor circuit; but within the PLC communications network Well then just radiation, induced by the introduction of interference communication lines. Radiated electromagnetic interference and field equipment layout and size generated by the equipment, particularly related to the frequency of the analog signal isolation barrier ,, general signal by setting the isolator shielded cables and shield local PLC and the high-pressure discharge protection element.
Secondly interference from outside the system lead
This mainly refers mainly introduced through the power and signal lines, commonly referred to as conducted interference signal fence. This interference in China's industrial scene more serious.