Generación de Nuevo Conocimiento: Artículos publicados
Módulo inalámbrico para el sensado de vibraciones superficiales en suelos
Fecha
2013-10-01Registro en:
Fulla, Marlon R., Palacio-Bedoya, Juan L., Flórez-Velásquez, Camilo A., Aristizábal-Tique, Víctor H., Módulo Inalámbrico para el Sensado de Vibraciones Superficiales en Suelos. TecnoLógicas [en linea] 2013, (Octubre-Sin mes)
0123-7799
Autor
Rincón Fulla, Marlon
Palacio Bedoya, Juan Luis
Flórez Velásquez, Camilo Andrés
Aristizábal Tique, Víctor Hugo
Institución
Resumen
In the present work, the feasibility of implementing the XBee technology in wireless accelerometric sensors (WAS) development for sensing of elastic waves on soils surface is analyzed. The incidence of distance and obstacles between a coordinator and end-device pair in their radio link by examining the number of packets received successfully was verified. Additionally, it was investigated the influence of the transmission rate over the sampling frequency of signals associated to mechanical vibrations from a testing ground by measuring the effective sampling periods of the "A / D Conversion - Transmission" process. The data reception errors introduced by the channel attenuation and the presence of obstacles, impose severe restrictions on the maximum allowable distance between the communication modules. The transmission rate features provided by XBee technology in association with the A / D time sampling of the microcontroller, allow to carry out recordings to a maximum sampling frequency of 1 kHz , useful for real-time applications where seismic signals are into the spectral range 0 to 500 Hz. In order to increase the sampling frequency of the sensor for prospection applications with signals with bandwidths greater than 500 Hz , it was successfully tested a prototype that uses a fast external memory for storing data, which significantly improves the sampling signal allowing to retake XBee technology due to its excellent low consumption features.