Suggestions to shield wiring from magnetic fields I have setup a standalone ECU on a custom build of mine. Now it involves a custom wiring harness with a lot of wires. For fueling, ignition, charging, misc inputs and outputs. The build is fairly small in size, so cabling space is limited, so a lot of wiring is bundled up together.
I faced a peculiar problem today. There is serial communication cable that I hook up to my laptop to access the ECU. With the engine off, it connects perfectly, lets me run diagnostics, setup, make changes etc. However, when I'm running the software with the engine running, after a while the communication is invariably lost. This happens after 2-3000 rpm. This issue never occurred when we ran the engine on the test bench. Where we had a lot of space to route the cabling.
I spoke to tech support for my ECU and they are pretty sure it needs EMF shielding of some sort due to magnetic fields causing noise in the communications cable or the USB-Serial converter. I would like to now what sort of DIY magnetic shielding I can do for the wires locally. I see a lot of options on the internet but I'm not sure I would have access to them here, financially or otherwise.
Also, if noise due to magnetic fields is such an issue, how can I be sure it's not affecting my signals to actuators or my signals from my sensor pickups? |