Does the AI inference accuracy of industrial AI edge gateways decrease under inverter interference?

The industrial AI edge gateway deployed next to the inverter cabinet may experience strong electromagnetic fields coupling to the video input interface, leading to a decrease in AI inference accuracy. Tests showed that when the inverter output current was 100A, the AI recognition accuracy of the unprotected gateway dropped from 99.2% to 91.5%. The corrective measures were:

1. Adding a common-mode filter (CMZ20212A-900T) in series at the camera's MIPI interface;

2. Adding an LC filter inductor (CML3225A-101T) to the 1.8V power supply for the AI core;

3. Grounding the shielding layer of all external I/O cables at both ends and installing ferrite cores (CMZ7060A-701T).

After on-site testing and protection, the AI inference accuracy recovered to 98.7%, a decrease of only 0.5%.