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Solution: Custom datalogger with
on-board signal conditioning for analog signals, opto isolation for digital
signals and J1939 for engine ECU messages. Unique ruggedized power supply
accepts unconditioned vehicle power, disconnects datalogger on low battery
voltage, and provides hold-up power to complete SD card writes. SD card is
read on startup for J1939 message filters. Companion Windows program
allows user to set message filters and read logged data in engineering format.
This was a technology demonstration project.
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