8 documents found, page 1 of 1

Wave profile and tide monitoring system for scalable implementation

Presentation of a wave profile and tide monitoring system, with low-cost and low-power pressure sensors connected to a datalogger in a wired or acustic network.

Wave profile and tide monitoring system for scalable implementation

A versatile, miniaturized, cost-effective, low-power wave profile and tide monitoring system, capable of long-term and scalable deployment, was developed to integrate pressure and temperature sensors in an RS485 network, for standalone operation with organized memory or real-time shared data monitoring. The pressure and temperature sensors are controlled by low-power microcontrollers, that communicate the data ...

Inductive salinity sensor

Salinity determinations are usually made indirectly, measuring electrical conductivity, which depends on salinity and temperature. Unusual conductivity and salinity are indicative of pollution, regardless anthropogenic or natural sources. Aquatic species adapt to specific salinity levels. If this level is altered, it can result in the death of them, because there are changes in the oxygen concentrations. The go...

Design of a multipoint cost-effective optical instrument for continuous in-situ...

A cost-effective optical instrument for continuous in-situ monitoring applications is presented. With a production cost in raw materials of 38 €, a power consumption of 300 A in sleep mode and 100 mA in active mode (5 ms reading), and a capacity to monitor turbidity and sedimentary displacement at eight different depths in the water column, the sensor was developed for sediment monitoring in coastal areas. Due ...

Development of a cost-effective optical sensor for continuous monitoring of tur...

A cost-effective optical sensor for continuous in-situ monitoring of turbidity and suspended particulate matter concentration (SPM), with a production cost in raw materials less than 20 €, is presented for marine or fluvial applications. The sensor uses an infrared LED and three photodetectors with three different positions related to the light source-135º, 90º and 0º-resulting in three different types of light...

Building a reference DNA barcode library for marine amphipods of Portugal

From DNA barcodes to monitoring of amphipod communities: status and relevance o...

Revising the biodiversity of macrobenthos from the Portuguese coast using DNA b...