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Energy efficient wireless sensor platform for a snow load measurement
Bačinský, Martin ; Kouřil, Jiří (referee) ; Mráz, Ľubomír (advisor)
This bachelor thesis describes the problematics of snow load measuring. At first, sensors' principles of functionality for indirect measurements are mentioned. In the second part, the problematics of direct measurement with tensiometer takes place. The construction of wireless apparatus with the help of module ZigBit for the snow load measurement is the result of this work. Sensor board is designed in Eagle software, obeying standards for machine vacuum pickup and fabrication. The apparatus works in two modes. During indirect measuring, additional processing of data is necessary. In this mode, the sensor board has very low energy consuption and therefore long service life also after a battery connection. In the second mode, the apparatus is automatically sending data about actual snow load of particular roof. The whole machine communicates with the help of ZigBit module and ZigBee protocol IEEE 802.15.4. The communication distance between sensorial points is allowed up to 100m. At last but not at least, tensiometer UTILCELL M230 measurements are attached. In attachments, chemas and printed circuit boards are presented, too. Except documentation, the CD contains also libraries for components and details for DPS machine production in Eagle Software.
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