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http://hdl.handle.net/10609/118806
Title: Diseño de sensor de alarma inalámbrico. Transmisión en FSK. Banda ISM 868 MHz
Author: Montero Visent, Ángel Rubén
Director: Cobo Rodríguez, Germán  
Tutor: Moreno Soriano, Carlos Gonzalo
Keywords: microcontroller
band ISM 868 MHz
FSK
sensors
electronic systems
Issue Date: Jun-2020
Publisher: Universitat Oberta de Catalunya (UOC)
Abstract: Nowadays, many devices are based on sensors. Electronics provides implementation solutions on electronic systems with these components. This Final Degree Project describes the design and characterization of a circuit, in which the sensor supplies a modulated signal in the time domain, specifically the variation in temperature. The signal is digitized directly by a microcontroller, using an internal timer. Firstly, the analogue-digital conversion is analyzed. Secondly, the "alarm activation and deactivation state" (siren and bulb) are accurately programmed when a specific temperature value is detected. And, finally, FSK digital transmission in the ISM 868 MHz allows communication with the control module. The work includes a detailed study of the equipment's power supply, stepping down alternating voltage of the home network to each of the stages of the circuit using rectifying devices. Simulations and assembly of the invention conclude the work through software tools focused on the project, design and production of electronic circuits, such as TINA-TI, MLPAB y EAGLE.
Language: Spanish
URI: http://hdl.handle.net/10609/118806
Appears in Collections:Bachelor thesis, research projects, etc.

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