One of the highlights of going to the RVTEC meeting is getting to hear about some of the cool projects that are underway at the various institutions. One talk that caught my attention was the SUDS system, an NSF sponsored project that was given by the techs at Oregon State University.
I talked David O’Gorman and Toby Martin into doing a quick rundown on their SUDS system on camera during one of the breaks. SUDS is an acronym for the Ships Underway Data System, which consists of software and two data acquisition boards that they designed in-house – one analog and one digital. Each board can be programmed with metadata about the sensors that are attached to them. When the boards are plugged into the ships network they broadcasting XML data packets which include both data and metadata about the data via UDP for a back-end data acquisition to capture and store. For redundancy, there can be multiple acquisition systems on the network as well I’m told.
The data acquisition cards can be either powered directly or via POE (Power Over Ethernet). They can also supply power to the sensor if needed. The digital cards can accept RS232 and RS485. The analog has 4 differential input channels which can do 0-5v on two of the channels and 0-15v on the other two and range from 600Hz to 20kHz input signals.
Their website has links to a PDF of the presentationthey did at the 2010 UNOLS RVTEC meeting as well as various examples of data packets that the system broadcasts. Definitely something that could be quite useful to handle the ever-changing data acquisition needs on today’s research vessels. I look forward to learning more about the SUDS system in the days to come.