In recent years several techniques have been developed to measure and monitor the pollution of the air. Among these techniques, remote sensing using optical methods stands out due to several advantages for air quality control applications. A Passive Differential Optical Absorption Spectroscopy system that uses the ultraviolet region from 200 to 355 nm of the solar radiation is presented. The developed system is portable; therefore it is practical for real time and in situ measurements. The enhanced wavelength range of the system is intended to detect the ultraviolet light penetration in the Mexican Valley considering the solar zenith angle and the altitude. The system was applied to retrieve atmospheric SO2 columns emitted either by anthropogenic (power plant) or natural sources (volcano), reaching a detection limit of about 1 ppm. The measurement of the penetrating solar radiation on the earth surface at the UVC range is presented and the possibility to measure pollution traces of some contaminants as O3, NO2 and aromatic compounds in real time and in situ in the ultraviolet region is discussed.
Los robots colaborativos son de interés en variadas áreas de control, especialmente en la manipulación, desarrollo y precisión de tareas programadas; parte de su funcionalidad radica, entonces, en la plataforma de comunicación entre ellos. En este artículo de investigación se presenta el desarrollo de una plataforma para la comunicación entre robots colaborativos empleando dispositivos lógicos programables CPLD (Complex Programmable Logic Device), sensores ultrasónicos y sensores infrarrojos con la finalidad de que realicen múltiples tareas. Según la forma en que sean programadas, estas plataformas robóticas pueden apoyarlas empresas a enfrentar dificultades tales como los altos costos derivados de otras plataformas robóticas convencionales; asimismo, pueden orientarse a facilitar tareas cotidianas —como la transportación de objetos o el apoyo en labores domésticas—que se pueden automatizar de manera eficaz.
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