Browsing by Author "CANCINO MADARIAGA, BEATRIZ XIMENA"
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Thesis DISEÑO Y CONSTRUCCIÓN DE UN SISTEMA DE MONITOREO Y OPERACIÓN LOCAL Y REMOTA DE BAJO COSTO PARA LA AIREACIÓN DE AGUAS CON PRESENCIA DE MICROALGAS(Universidad Técnica Federico Santa María, 2016) Mamani Gómez, Jeffries Brian; Universidad Tecnica Federico Santa Maria UTFSM DEPARTAMENTO DE ELECTRONICA; OLIVARES SALINAS, MANUEL ANTONIO; CANCINO MADARIAGA, BEATRIZ XIMENAA good ventilation of waters allows fishes to obtain enough measurememt of oxigen for their survival and growth. The oxigen’s quantity changes because of the temperature, turbidity of the water, radiation, pH, among other variables. It is of interest to give a tool that allows to make an study to obtain the correlation among these variables to predict the variation of oxigen in waters with microalgae. As a solution’s proposal, a Monitoring System of Local and Remote Operation based on sensors, actuators and hardware of low cost was made. The sensors and actuators were connected to an Arduino Nano with the idea of using the Analog Digital conversor along with digital inputs and outputs. Reconditioning circuits for analog sensors were made to amplify weak signals and the actuation was implemented with a two relay module qualified to operate in high currents and alternating or continuous voltage. A Web System protected with user and password was made, which shows a real time summary of the measured variables, individual graphs for each sensor, buttons for initiate or stopping actuations, download of data, procedures for calibration of sensors, pictures of the system, among other informations. The Web System was implemented in a Raspberry Pi, which besides being the operations center to communicate with the Arduino Nano, it posses characteristics like sincronization of local database with and an external databes, date and time record in RTC, automatic connection to internet by modem 3G, a record of all done actions to depurate error of comunication or sensors and remote access through internet.
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