5 documents found, page 1 of 1
Wave profile and tide monitoring system for scalable implementation
Rocha, J. L.; Matos, Tiago; Faria, C. L.; Penso, Camila Maria Ramos Aires Moreira; Martins, Marcos Silva; Gomes, P. A.; Gonçalves, L. M.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
Rocha, J. L.; Matos, Tiago; Faria, C. L.; Penso, Camila Maria Ramos Aires Moreira; Martins, Marcos Silva; Gomes, P. A.; Gonçalves, L. M.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
Barroso, Maria; Rocha, J. L.; Faria, C. L.; Gomes, P. A.; Gonçalves, L. M.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...
Development of a cost-effective optical sensor for continuous monitoring of tur...
Matos, T.; Faria, C. L.; Martins, Marcos; Henriques, Renato; Gomes, P. A.; Gonçalves, L. M.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...
Energy harvesting to supply moored oceanographic monitoring stations
Faria, C. L.; Martins, Marcos; Lima, R.; Gonçalves, L. M.This work aims to study a new energy harvesting device to be anchored on the ocean floor and convert any type of currents, tides or oscillation movement into electrical energy using linear electromagnetic generators. The final application is to supply energy to a set of moored monitoring sensors that collects data and allowing the system to be energetically autonomous. The proposed setup is a spherical buoy wit...