93 resultados para Microcontrolador
Resumo:
In this work, a platform to the conditioning, digitizing, visualization and recording of the EMG signals was developed. After the acquisition, the analysis can be done by signal processing techniques. The platform consists of two modules witch acquire electromyography (EMG) signals by surface electrodes, limit the interest frequency band, filter the power grid interference and digitalize the signals by the analogue-to- digital converter of the modules microcontroller. Thereby, the data are sent to the computer by the USB interface by the HID specification, displayed in real-time in graphical form and stored in files. As processing resources was implemented the operations of signal absolute value, the determination of effective value (RMS), Fourier analysis, digital filter (IIR) and the adaptive filter. Platform initial tests were performed with signal of lower and upper limbs with the aim to compare the EMG signal laterality. The open platform is intended to educational activities and academic research, allowing the addition of other processing methods that the researcher want to evaluate or other required analysis.
Resumo:
En el presente documento se diseña e implementa un controlador de carga de baterías a pulsos, el cual está basado en el circuito integrado BQ24650 de National Instruments, para mejorar el sistema de alimentación de las estaciones sísmicas de la Red Sísmica del Austro. Además, se ha desarrollado un sistema de monitoreo de los niveles de tensión del panel solar y la batería. Esta información será transmitida a través de un radio enlace analógico existente en la RSA, usando el ancho de banda no ocupado del sistema analógico de transmisión de información sísmica, sin alterar, perturbar o añadir ruido al sistema. Posteriormente esta información será visualizada y almacenada en una base de datos en las oficinas de la RSA en la ciudad de Cuenca.
Resumo:
141 p.
