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D-ves : dispositivo de visualización de exposición solar : visualizar para visibilizar
(Universidad de Chile, 2023)
través de la investigación de métodos de medición solar y el uso de recursos tecnológicos de fuente abierta, se logró una convergencia entre la dosimetría UV y el ecosistema de Arduino. Esto resultó en un producto que se incorpora a la indumentaria...
Desarrollo de prototipo de medición de contaminantes gaseosos a través de sensores de bajo costo basados en sistemas Arduino.
(Universidad de Chile, 2021)
medición de gases de bajo costo, a través de una plataforma Arduino y sensores de óxidos metálicos semiconductores (sensores MOS) CJMCU-6814 y CJMCU-811 para medir CO, H2, CH4, C2H5OH, NH3, C3H8, C4H10, NO2, eCO2, TVOC y temperatura ambiental.
Para esto, se...
The high cost of air quality measurement equipment that is approved or certified by the United States Environmental Protection Agency (USEPA) or by the Directives of the European Community (EU), have made it difficult to achieve a monitoring of the quality of the air with wide coverage on the part of the different authorities in the world. In recent times, various sensors have emerged that allow monitoring of air quality, which can cost a minimal fraction of the cost of reference certificate equipment. At present, various air quality monitoring projects have been developed in the world, both with fixed and mobile devices. As are the CURMOS project (Correos Urban Mobile Sensors) in the city of Malaga, Spain, Life + Respira in the city of Pamplona, Spain and the Smairt project in the city of Guadalajara, Spain. Which have made it possible to show that air pollution is not homogeneous and at the same time, have made it possible to determine the degree of exposure of some groups of people such as cyclists, pedestrians, postmen, among others. The objective of this Title Seminar is to design and build a prototype of low-cost portable gas measurement equipment, through an Arduino platform and semiconductor metal oxide sensors (MOS sensors) CJMCU-6814 and CJMCU-811 to measure CO, H2, CH4, C2H5OH, NH3, C3H8, C4H10, NO2, eCO2, TVOC and room temperature. For this, a bibliography and audiovisual material search was carried out on different projects with Arduino boards available to know the correct operation on these boards. Consecutively, the operation of each of the prototype components was tested to know the software and the electrical circuit necessary for its operation individually, where it was discovered that for the operation of the MOS sensors, external components called pull up resistors, where 3 pull up resistors are required for the CJMCU-6814 sensor with values of 1 MΩ, 330 KΩ and 20 KΩ (values obtained through different tests) and 2 pull up resistors for the CJMCU-811 sensor both have a value of 4,7 KΩ (value obtained from bibliography). Subsequently, the software for the components was compiled into a single software for the prototype and assembled the complete system in such a way that all the components could work simultaneously. To verify that the prototype is working correctly, various tests were carried out in which a continuous operation of the prototype was sought and that it would react to different disturbances (disturbances of incense, candle, incinerated paper and body spray), where it was found that For continuous operation, the system requires a fully charged battery that is also connected to the electrical supply, furthermore the disturbances generated different variations in the measurements generated by the prototype, which is an indicator that the prototype is operating. Finally, a two-month monitoring campaign was carried out to analyze the operation of the prototype, where it was found that the prototype did not present any inconvenience during the measurement campaign, that the continuous operation of the sensor for a long time generates a micro heat island altering In environmental temperature measurements, the low concentration of the different gaseous pollutants present in an urban interior environment is undetectable for the prototype, and only through some disturbances it is possible to appreciate signals for these, due to the operation that the prototype presents to detect the different gases, in addition, some measurements that are related to the reduction and ammonia sensor may be overestimated, since the sensors do not differentiate the gases that are measured in these sensors. With which it is concluded that the development of a prototype of low-cost portable gas measurement equipment was achieved, through an Arduino platform and MOS sensors, which can be used indoors and outdoors in various urban and rural environments. as industrial, being in the industrial environment the most recommended due to the great wealth of information available on gaseous pollutants in these areas. Before being properly implemented, the developed prototype must be validated in controlled laboratory conditions with standard concentrations or through comparison with equipment that is approved or certified by USEPA and / or the EU, such as the THERMO 42i for measure NO, NO2 and NOx, THERMO 48i to measure CO, among others....
The high cost of air quality measurement equipment that is approved or certified by the United States Environmental Protection Agency (USEPA) or by the Directives of the European Community (EU), have made it difficult to achieve a monitoring of the quality of the air with wide coverage on the part of the different authorities in the world. In recent times, various sensors have emerged that allow monitoring of air quality, which can cost a minimal fraction of the cost of reference certificate equipment. At present, various air quality monitoring projects have been developed in the world, both with fixed and mobile devices. As are the CURMOS project (Correos Urban Mobile Sensors) in the city of Malaga, Spain, Life + Respira in the city of Pamplona, Spain and the Smairt project in the city of Guadalajara, Spain. Which have made it possible to show that air pollution is not homogeneous and at the same time, have made it possible to determine the degree of exposure of some groups of people such as cyclists, pedestrians, postmen, among others. The objective of this Title Seminar is to design and build a prototype of low-cost portable gas measurement equipment, through an Arduino platform and semiconductor metal oxide sensors (MOS sensors) CJMCU-6814 and CJMCU-811 to measure CO, H2, CH4, C2H5OH, NH3, C3H8, C4H10, NO2, eCO2, TVOC and room temperature. For this, a bibliography and audiovisual material search was carried out on different projects with Arduino boards available to know the correct operation on these boards. Consecutively, the operation of each of the prototype components was tested to know the software and the electrical circuit necessary for its operation individually, where it was discovered that for the operation of the MOS sensors, external components called pull up resistors, where 3 pull up resistors are required for the CJMCU-6814 sensor with values of 1 MΩ, 330 KΩ and 20 KΩ (values obtained through different tests) and 2 pull up resistors for the CJMCU-811 sensor both have a value of 4,7 KΩ (value obtained from bibliography). Subsequently, the software for the components was compiled into a single software for the prototype and assembled the complete system in such a way that all the components could work simultaneously. To verify that the prototype is working correctly, various tests were carried out in which a continuous operation of the prototype was sought and that it would react to different disturbances (disturbances of incense, candle, incinerated paper and body spray), where it was found that For continuous operation, the system requires a fully charged battery that is also connected to the electrical supply, furthermore the disturbances generated different variations in the measurements generated by the prototype, which is an indicator that the prototype is operating. Finally, a two-month monitoring campaign was carried out to analyze the operation of the prototype, where it was found that the prototype did not present any inconvenience during the measurement campaign, that the continuous operation of the sensor for a long time generates a micro heat island altering In environmental temperature measurements, the low concentration of the different gaseous pollutants present in an urban interior environment is undetectable for the prototype, and only through some disturbances it is possible to appreciate signals for these, due to the operation that the prototype presents to detect the different gases, in addition, some measurements that are related to the reduction and ammonia sensor may be overestimated, since the sensors do not differentiate the gases that are measured in these sensors. With which it is concluded that the development of a prototype of low-cost portable gas measurement equipment was achieved, through an Arduino platform and MOS sensors, which can be used indoors and outdoors in various urban and rural environments. as industrial, being in the industrial environment the most recommended due to the great wealth of information available on gaseous pollutants in these areas. Before being properly implemented, the developed prototype must be validated in controlled laboratory conditions with standard concentrations or through comparison with equipment that is approved or certified by USEPA and / or the EU, such as the THERMO 42i for measure NO, NO2 and NOx, THERMO 48i to measure CO, among others....
Implementación de circuito para medir la eficiencia en la producción de energía en los paneles solares (suciedad, orientación y horarios del día)
(Universidad de Chile, 2022)
dispositivos para tomar mediciones de curva I-V y temperatura superficial
de paneles solares de forma exitosa con tecnologías y presupuesto disponibles para realizarlo. El panel utilizado para el análisis se conectó a dos microcontroladores Arduinos distintos...
Diseño e implementación de una infraestructura para un sistema de control distribuido (DCS)
(Universidad de Chile, 2015)
servidor de control el SBC Raspberry Pi B+, y como elemento de control el sistema embebido Arduino Yún. Para conectar el equipo al elemento de control, se utilizó circuitos y dispositivos electrónicos con el fin de enlazar los actuadores y sensores...
Diseño e implementación de una experiencia para talleres de introducción a la ingeniería
(Universidad de Chile, 2014)
Arduino, que permite la manipulación de dispositivos electrónicos. Se mantiene el enfoque CDIO (Concebir, diseñar, implementar y operar) en el que se busca acercar el quehacer de la ingeniería, al estructurar una actividad en base a un problema concreto...
Diseño y construcción de un sistema para detectar, localizar y caracterizar accidentes automovilísticos
(Universidad de Chile, 2017)
elección de componentes de mercado y fácil uso, en la que se optó por Arduino como controlador, un MPU9250 como sensor de aceleraciones y un FONA 2G como módulo para comunicaciones. Luego, se desarrolló la arquitectura completa implementando una plataforma...
The Life Cycle of a Radiosonde
(American Meteorological Society, 2013)
Psychiatric Hospital Beds and Prison Populations in South America Since 1990 Does the Penrose Hypothesis Apply?
(American Medical Association, 2015)
Development of a visible light communications versatile research platform with potential application on vehicular networks
(Universidad de Chile, 2018)
grupo fueron las plataformas de hardware programable como radios definidas por software (SDRs) y las placas Arduino. Otro tema fue la red de control interna de los vehículos y cómo existen interfaces para acceder a ella y obtener mediciones de los...
Desarrollo y evaluación de un sistema de comunicación para un nanosatélite
(Universidad de Chile, 2016)