Advanced sensors technology survey

This project assesses the state-of-the-art in advanced or 'smart' sensors technology for NASA Life Sciences research applications with an emphasis on those sensors with potential applications on the space station freedom (SSF). The objectives are: (1) to conduct literature reviews on relevant advanced sensor technology; (2) to interview various scientists and engineers in industry, academia, and government who are knowledgeable on this topic; (3) to provide viewpoints and opinions regarding the potential applications of this technology on the SSF; and (4) to provide summary charts of relevant technologies and centers where these technologies are being developed

Modelamiento de redes de transmisión inalámbricas para la comunicación de sensores dentro del cuerpo humano

En esta tesis se realiza una comparación entre los modelos actualmente existentes para el modelado de transmisión de señales en el cuerpo humano más concretamente IBC, para esto se desarrolló un modelo por diferencias finitas para evaluar el SAR (Tasa de absorción específica) en las diferentes capas orgánicas del cuerpo humano, realizando esta simulación entre capas a diferentes frecuencias con el fin observar su comportamiento y validarlo contra los parámetros del estándar IEEE 802.15.6. Lo cual dio resultados de tasa de absorción con un máximo de 0.15 W/kg a 20 GHz y con una tendencia a disminuir a menores frecuencias.Abstract: In this thesis a comparison is made between the currently existing models for the modeling of signal transmission in the human body, more specifically IBC, for this a model was developed by finite differences to evaluate the SAR (Specific absorption rate) in the different organics layers of the human body, performed this simulation between layers at different frequencies in order to observe their behavior and validate it against the parameters of the IEEE 802.15.6 standard.Maestrí

Design and Control of Power Converters 2019

In this book, 20 papers focused on different fields of power electronics are gathered. Approximately half of the papers are focused on different control issues and techniques, ranging from the computer-aided design of digital compensators to more specific approaches such as fuzzy or sliding control techniques. The rest of the papers are focused on the design of novel topologies. The fields in which these controls and topologies are applied are varied: MMCs, photovoltaic systems, supercapacitors and traction systems, LEDs, wireless power transfer, etc