I use RP2 for data collection purposes and i am testing its limits. I use it next to diesel engine and its alternator.(I know pi is not for industrial use and this is a prototype.)
There is not too much work load on pi, it is mostly at idle state. I use industrial grade power supply 5.2V - 5A. As heat comes from diesel engine i used some fans to cool down pi and i saw cpu temperature is around 50 degree Celcious without any computation.(This is in its range.) I use usb - rs232 converters for collecting data.(i tried 10 different with high quality chips even used digitus)
When i check ttyUSB*, pi starts from ttyUSB0 but without unpluging and pluging i found my device at ttyUSB16. and there is no ttyUSB0 anymore,
I use a usb detector for measuring voltage and amperage at the end of usb converter, i see that 5V is stable but amperage is getting lower and stucks at some point which leads to problems collecting data.
I double checked pi psu voltage, cable voltage and all, pi is supplied properly for sure. Pi with usb converter attached draws around 400mA at all.
- Can ambient temperature effect LAN9514(usb controller chip)? makes it stop sending and receving data?
- Can an alternators electromagnetic interference effect LAN9514(usb controller chip)? The cable is shielded by the way.
Is there a way to SCREEN/SHIELD to protect from EMI interference?
Thanks in advance.