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Recolector de Ciencia Abierta, RECOLECTA
Doctoral thesis . 2021
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Medida de la conductividad en líquidos con procesamiento en microcontrolador

Authors: García Blanes, Laura;

Medida de la conductividad en líquidos con procesamiento en microcontrolador

Abstract

Son diversos los ámbitos en los cuales la conductividad de los líquidos es de gran importancia, por ejemplo, en el ámbito de la salud, beber agua en unas condiciones inadecuadas puede derivar a enfermedades de diversos tipos. Otro ejemplo, puede ser en el sector agrícola, debido a que el agua de riego no puede sobrepasar un cierto valor de conductividad. En la industria un valor inadecuado de conductividad puede provocar depósitos indeseables en partes cromadas causando problemas significativos en la fabricación de semiconductores y componentes de turbinas utilizadas en la industria de la energía. En este trabajo fin de grado se propone desarrollar un conductímetro para la obtención de la medida de la conductividad de líquidos. Se trabaja en corriente alterna debido a que, en este tipo de medidas, si la corriente es continua aparecen deposiciones en los electrodos y por tanto errores en las medidas. Para ello se ha diseñado un generador de funciones senoidales trabajando a una frecuencia de 1000Hz. Se ha trabajado con una plataforma basada en el microcontrolador de Texas Instruments en este caso es un LaunchPad MSP430FR6989, a partir de él obtendremos el valor de la conductividad del líquido, leyendo la tensión de salida del conductímetro y pasando por el ADC, mostrando el dato tomado mediante un display LCD, además con la funcionalidad de poder enviar los datos obtenidos mediante un protocolo de comunicaciones por puerto serie tipo UART. La programación del microcontrolador se ha realizado en un entorno de desarrollo como es Code Composer Studio de Texas Instruments. Abstract: It is well-known that liquid conductivity has great importance in all areas. For instance, in the health sector, drinking water in bad conditions can lead to serious illnesses. Regarding the agricultural field, the irrigation water cannot exceed a certain conductivity level. In the industrial areas, an inadequate conductivity value may provoke undesirable sediments in chromed parts, causing significant problems in energy industry when making semiconductors and turbine components. This TFG attempts to develop a conductivity meter to measure liquid conductivity. It works in alternating current because, in this type of measurements, if the current is continuous, depositions appear in the electrodes and therefore errors in the measurements. In order to fulfil this task, a sinusoidal functions generator that operates in 1000Hz frequency has been designed. Furthermore, this project works with a platform based in Texas Instruments microcontroller, more specifically a LaunchPad MSP430FR6989. From this device, liquid conductivity value will be obtained, reading the output voltage of the conductivity meter, going through the ADC to finally show the data through a LCD display. It also deals with the functionality to send the obtained data through a communications protocol via a serial port UART type. The microcontroller programming has been carried out in a development environment like Code Composer Studio created by Texas Instruments.

Country
Spain
Related Organizations
Keywords

microcontroller, microcontrolador, functions generator, conductímetro, generador funciones, conductivity meter, UART, Trabajo Fin de Grado de la Universidad de Almería

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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