The storm hit, but the auto-helm held course using Elena’s filtered, validated, and converted NMEA 0183 data. That night, she wrote a short user guide titled “Surviving NMEA 0183 in LabVIEW: Checksums, State Machines, and the Producer/Consumer Pattern.”
To make this useful, you must "parse" it. The most common LabVIEW method involves: How to decode & analyze NMEA-0183 in PicoScope 7
She added a function (Technical Data Management Streaming) to record every valid NMEA sentence with a timestamp for post-cruise analysis. labview nmea 0183
NMEA 0183 is a text-based (ASCII) serial protocol. It is simple, human-readable, and surprisingly robust.
A typical GPS sentence looks like this: $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47 The storm hit, but the auto-helm held course
Since most NMEA 0183 devices use (differential) or RS-232 (single-ended) signals, you will likely need a serial-to-USB converter to plug the sensor into your PC. 2. The Data Acquisition (VISA)
Use VISA Configure Serial Port.vi . Set the baud rate (usually 4800) and enable the Termination Character (Line Feed, \n ). NMEA 0183 is a text-based (ASCII) serial protocol
She wrote a more robust state machine in LabVIEW:
Elena’s first parser started dropping sentences. The auto-helm display flickered.