University of North Florida

Transcription

1 Water Quality Buoy Michael Toth, Patrick Welsh and J. David Lambert Environmental Monitoring Mapping Analysis and Planning Systems Laboratory ONR Buoy Conference Monterey, CA March 9-11, 2010

2 Buoy Design Criteria Create a sheltered-water buoy capable of producing EPA approved water quality measurements Low cost, but survivable, buoy structure of easily obtained materials Self sufficient on solar power Human launchable, and easily transportable Dual mode wireless data telecommunications Small waterplane cross-section with high stability High quality instrumentation

3 Mission Fill the gap between an ocean capable buoy and manual sampling for EPA CWA Monitoring Useable in hundreds of Florida waterbodies (WBIDs) Continuously monitor multiple water quality parameters in sheltered locations (selectable intervals) Improved real-time data availability with cell phone alerts Captures episodic events missed by manual sampling Easily launched, serviced and retrieved by small boat Two man launch and pickup truck transportable

4 Buoy Overview Power-managed solar panel/ Lead-acid battery Spread spectrum 900 MHz radio & text messaging communication USCG approved navigation light Integral lightning protection Campbell Scientific data logger YSI 6600 V2 Datasonde with multiple water quality sensors

5 Structure Subsystem Schedule 40, 4 PVC pipe and fittings Angle aluminum frame ¼ Lexan plastic or aluminum deck Stainless steel hardware Outrigger design for stability Small water plane cross-section Expanded foam sealing of pipes Reinforced sensor mounting point Three point moor (sun oriented)

6 Power Subsystem 35 watt solar panel 12 volt 24 Ah sealed lead-acid battery 35W 12V Solar Panel Morningstar charge controller System voltage reporting Self contained NEMA 4X battery box Morningstar Charge Controller 12V 12Ah Sealed Lead-acid Battery 12V 12 Ah Sealed Lead-acid Battery Parallel Configuration: 12V 24Ah total Loads: YSI Data Sonde Freewave Radio TELIT Cellular Modem CR800 Datalogger

7 Data Subsystem Standard SDI-12 protocol Campbell Scientific CR800 data logger YSI Data Sonde (options) Conductivity, Salinity, TDS, Redox, ph, Depth and level, Temperature, Dissolved oxygen, Nitrate, Ammonium and Ammonia, Chloride, Turbidity, Chlorophyll, Rhodamine, Phycocyanin, Phycoerythrin, Flow Atlantic Scientific lightning suppression Reserve power supply (12 Volts) NEMA 4X Enclosure

8 Communication Subsystem 900 MHz Freewave spread spectrum radio TELIT cellular data/text/ messaging 8 db gain tuned omni-directional antennas 900 MHz 8dB Gain Antenna 900 MHz 8dB Gain Antenna TVSS TVSS Freewave Radio Cellular Modem Atlantic Scientific lightning suppression Water resistant RF connections TI MSP430 Microcontroller Future TI MSP430 microprocessor control CR800 Datalogger TVSS YSI Data Sonde

9 Lake Oneida Deployment

10 Lake Oneida Deployment

11 Lake Oneida Deployment Data

12 Summary UNF developed water quality buoy fills the need for a low cost sheltered water buoy which can be deployed by two people in a lake, stream or estuary. Greatly increases data availability over manual sampling and captures episodic events, such as storm data when manual sampling would be unsafe. Produces EPA quality data in real-time via wireless communication and can be configured for cell phone alerts. (Patent in process)

13 Point of Contact Michael A. Toth - m.toth@unf.edu Dr. Pat Welsh (904) pwelsh@unf.edu Dr. Dave Lambert (904) jlambert@unf.edu