Turbidity monitoring�via a KdUINO buoy
But first – all about BOB
BOB measures:
Where do the BOBs live?
ID | LOCATION | ACTIVE? |
BOB-01 | Lovers Point Oyster Sanctuary | No |
BOB-02 | South of Lovers Point | Yes |
BOB-03 | Cherry Cove | Yes |
BOB-04 | Calvert Marine Museum | Yes |
BOB-05 | Leonardtown Wharf | Yes |
BOB-06 | Moll Dyer Run? | No |
BOB-07 | Combs Creek? | No |
Updated 11/3/2023
Turbidity Project Inspiration
Journal article: Estimating the Underwater Diffuse Attenuation Coefficient with a Low-Cost Instrument: The KdUINO DIY Buoy
The authors Raul Bardaji, Albert-Miquel Sánchez, Carine Simon and Jaume Piera are associated with the Department of Physical and Technological Oceanography, Marine Sciences Institute (ICM-CSIC), Barcelona, Spain; Marcel R. Wernand is associated with Department of Physical Oceanography, Royal Netherlands Institute for Sea Research (NIOZ), Texel, The Netherlands
Published in the 15 March 2016 in the journal Sensors
Original KdUINO concept
One way to quantify water transparency is to determine the diffuse attenuation coefficient – Kd – which is estimated by measuring the decrease of downwelling irradiance with depth.
The KdUINO is designed to compute Kd as the slope of the linear regression of the measurements.
Conceptual Design
BoM / Components
Component | Qty / Notes |
TCS34725 Light Sensor | 6 |
TCA9548A I2C Multiplexer | 1 |
PVC pipe and fittings | 5 tees; 1” straight pipe cut to fit; 1 cap |
Weight | @ bottom cap to maintain orientation |
Swan STM32L4R5 | Microcontroller |
Wire | |
Open Design Issues
Build Plan
Component Pinouts
TCS34725 (light sensor)
TCA9548A (mux)
Swan (mcu)
Circuit Wiring
QR code to Forrest Tech BOBs website
March 2023: NRM students on field trip to CBL
Sources & further reading
Sources
1. Bardaji, R.; Sánchez, A.-M.; Simon, C.; Wernand, M.R.; Piera, J. Estimating the Underwater Diffuse Attenuation Coefficient with a Low-Cost Instrument: The KdUINO DIY Buoy. Sensors 2016, 16, 373. https://doi.org/10.3390/s16030373
2. Carlos Rodero, Raul Bardaji, Jaume Piera. 2021. KduPRO. User’s guide and technical documentation. doi: http://doi.org/10.5281/zenodo.5721155�
3. Rodero García, C. [et al.]. Water quality monitoring program through the KduSTICK, a low-cost and Do-It-Yourself instrument connected by the Internet of Things. 9th International Workshop on Marine Technology (MARTECH 2021). "Instrumentation Viewpoint", 2021, núm. 21, p. 64-65.
4. https://www.monocle-h2020.eu/Sensors_and_platforms/KdUINO_en
Further reading: MONOCLE
MONOCLE website > https://www.monocle-h2020.eu
MONOCLE: Multiscale Observation Networks for Optical monitoring of Coastal waters, Lakes and Estuaries
Low cost and high-autonomy sensors and platforms for optical water quality monitoring.
Funded by EU H2020, MONOCLE brought together 12 partners from across Europe to create sustainable in situ observation solutions for Earth Observation (EO) of optical water quality in inland and transitional waters. Developing essential research and technology to lower the cost of acquisition, maintenance, and regular deployment of in situ sensors.�
�The MONOCLE sensor system establishes firm links between operational Earth Observation (EO) and essential environmental monitoring in inland and transitional water bodies. These aquatic ecosystems, which are particularly vulnerable to direct human impacts, represent areas of the weakest performance in current EO capability, despite the major technological advances in recent decades. At the same time, these areas are of great economic importance and are crucial to sustainable food, energy, and clean water supply.
Other sources: Trevanthan
Sensors journal article: Towards the Development of an Affordable and Practical Light Attenuation Turbidity Sensor for Remote Near Real-Time Aquatic Monitoring
Authors: Jarrod Trevathan and Wayne Read at Institute of Integrated and Intelligent Systems, Griffith University, Brisbane, Australia and Simon Schmidtke at Substation33, Logan, Australia
Published: 2 April 2020