Oscillations studied with the smartphone ambient light sensor

Sans, J. A.; Manjón, F. J.; Pereira, Aledir Silveira; Gómez-Tejedor, José A.; Monsoriu, Juan A.

doi:10.1088/0143-0807/34/6/1349

Cited by 76 publications

(53 citation statements)

References 13 publications

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“…One of the main problems of these sensors is that they are located inside the device, allowing for measuring only the light that falls directly on the device, not the ambient light. However, the results obtained in different research studies show how they can be useful in practical cases, as in the undergraduate physics laboratory [31], where a high level of accuracy is not needed.…”

Section: Mobile Ambient Light Sensormentioning

confidence: 99%

Smartphones as a Light Measurement Tool: Case of Study

et al. 2017

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Abstract:In recent years, smartphones have become the main computing tool for most of the population, making them an ideal tool in many areas. Most of these smartphones are equipped with cutting-edge hardware on their digital cameras, sensors and processors. For this reason, this paper discusses the possibility of using smartphones as an accessible and accurate tool, focusing on the measurement of light, which is an element that has a high impact on human behavior, which promotes conformance and safety, or alters human physiology when it is inappropriate. To carry out this study, three different ways to measure light through smartphones have been checked: the ambient light sensor, the digital camera and an external Bluetooth luxmeter connected with the smartphone. As a result, the accuracy of these methods has been compared to check if they can be used as accurate measurement tools.

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Section: Mobile Ambient Light Sensormentioning

confidence: 99%

Smartphones as a Light Measurement Tool: Case of Study

et al. 2017

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“…In addition, the smartphone acceleration sensors were used to quantitatively analyze a system of coupled oscillators [21]. Furthermore, the smartphone ambient light sensor has been used to study a system of two coupled springs [22]. The rotation sensors have been used to study the conservation of angular momentum, non-conservation of rotational kinetic energy [23], rotational energy in a pendulum [24], and the relation between angular velocity and centripetal acceleration [25,26].…”

Section: Introductionmentioning

confidence: 99%

Solar Irradiance Measurements Using Smart Devices: A Cost-Effective Technique for Estimation of Solar Irradiance for Sustainable Energy Systems

Al-Ta’ani

Arabasi

2018

Sustainability

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Solar irradiance measurement is a key component in estimating solar irradiation, which is necessary and essential to design sustainable energy systems such as photovoltaic (PV) systems. The measurement is typically done with sophisticated devices designed for this purpose. In this paper we propose a smartphone-aided setup to estimate the solar irradiance in a certain location. The setup is accessible, easy to use and cost-effective. The method we propose does not have the accuracy of an irradiance meter of high precision but has the advantage of being readily accessible on any smartphone. It could serve as a quick tool to estimate irradiance measurements in the preliminary stages of PV systems design. Furthermore, it could act as a cost-effective educational tool in sustainable energy courses where understanding solar radiation variations is an important aspect.

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“…En relación a los otros sensores, también se pueden citar trabajos publicados por el grupo del Prof. Monsoriu (Sanz et al 2013, Gomez-Tejedor et al, 2013 y por otros autores (Parolin y Pezzi, 2013;Thoms at al., 2013;Kuhn y Vogt, 2013b;Silva, 2012;Forinash y Wisman, 2012; Thoms at al. (2013) utilizan el sensor de luz ambiental.…”

Section: Introductionunclassified

El smartphone como barómetro en experimentos de Física

Salilnas

Giménez

Monsoriu

et al. 2018

Model. Sci. Educ. Learn.

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En este trabajo se presentan dos experimentos que sacan partido del sensor de presión de los teléfonos inteligentes, utilizándolo para determinar su valor en el seno de agua en equilibrio en una probeta. En un primer experimento, destinado a estudiantes de Secundaria y niveles superiores, las medidas de la presión obtenidos a diferentes profundidades permiten realizar un ajuste lineal, comprobando así la validez de la Ley de Stevin. Además, a partir de dicha ley y de los parámetros del ajuste se puede determinar la densidad del agua. Los valores obtenidos indirectamente por este procedimiento difieren entre un 2 % y un 4 % del resultado de dividir entre sí la masa y el volumen de una muestra. En un segundo experimento, más enfocado a estudiantes de primeros cursos universitarios de asignaturas de Física, el teléfono móvil sumergido oscila suspendido de un muelle. Las medidas del sensor de presión permiten, mediante la Ley de Stevin, obtener la serie temporal de la presión en la correspondiente oscilación amortiguada, cuyos parámetros se determinan mediante un ajuste no lineal. La comparación de la pulsación libre obtenida a partir de estos valores difiere en un 1, 5 % respecto del obtenido a partir de la medición directa del periodo fuera del agua. En ambos casos, los resultados obtenidos indican la efectividad del método utilizado en contextos docentes. This paper presents two experiments that take advantage of smartphones pressure sensor, using it to determine the value of the pressure within in equilibrium water in a test tube. In a first experiment, aimed at students of secondary and higher levels, the data collected with the pressure sensor of a smartphone at different depths allow a linear fit, thus checking the validity of Stevin's Law. In addition, based on this law and the parameters of the adjustment it has been possible to determine the density of the water. The density values obtained indirectly by this procedure differ between 2 % and 4 % of the result of dividing the mass and volume of a sample. In a second experiment, more focused on students of the first university courses of Physics subjects, the submerged smartphone oscillates suspended from a spring. The measurements of the pressure sensor allow, through Stevin's Law, to obtain the time series of the pressure in the corresponding damped oscillation, whose parameters are determined by a non-linear adjustment. The comparison of the free pulsation obtained from these values differs by 1.5 % from that obtained from the direct measurement of the period outside the water. In both cases, the results obtained indicate the suitability of the current methodology in teaching contexts.Palabras clave: teléfonos inteligentes, hidrostática, enseñanza de la Física.

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Oscillations studied with the smartphone ambient light sensor

Cited by 76 publications

References 13 publications

Smartphones as a Light Measurement Tool: Case of Study

Smartphones as a Light Measurement Tool: Case of Study

Solar Irradiance Measurements Using Smart Devices: A Cost-Effective Technique for Estimation of Solar Irradiance for Sustainable Energy Systems

El smartphone como barómetro en experimentos de Física

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