The development of IoT product has generated multiple needs in the field of information and communication technologies. Among them, the challenge of creating technological products capable of functioning independently of the power grid arises, leading to a line of development in telecommunications that, instead of maximizing the transmission capabilities of a system, seeks to minimize its power consumption.
This TFG is developed within the ESTAR project, an autonomous IoT product meant for monitoring multiple environments. More specifically, it focuses on ESTAR_COMMS, the module which will be in charge of connecting the device to an external server.
In order to provide wireless communications with the lowest energy cost, an analysis of different components is given, concluding with the SARA-R510S-01B. The SARA has access to NBIoT radio technology from the LPWANs that allows for low speed, low payload, sporadic and Ultra-Low-Power transmissions.
In the thesis, the following results are presented:
A functional communication design and PCB prototype that uses the SARA-R510S-01B module, with an analysis of all design stages.
A first approach to the software design, in addition to a summary of the main AT commands that will be used to control the SARA.
The first energy consumption tests with the KeysightB2901A.
Today, the use of monitoring systems is widespread in society. However, it is not common to see them in animals.
This end-of-grade work aims to design and implement a wearable system for cows, horses, sheep and goats. Thus, the farmer can know the state of the animals and their location. Taking into account the signs and characteristics that occur in this type of animals in situations of interest, the system has several sensors: a microphone, a temperature and humidity sensor, a gyroscope, an accelerometer, an air quality sensor, a gas sensor to detect diseases and a GPS.
Thanks to the information of these sensors it is possible to know when the animal is sick, has problems walking or even the period of heat of the females and later the time of delivery.
Finally, all data is sent to the farmer to make decisions on the farm, improving the welfare of the animal and increasing its productivity.
For the development of the system, the complete hardware design and implementation was carried out, in addition to the realization of a hardware abstraction layer (HAL) for all sensors.
The objective of
this Master Thesis is the design, implementation and validation of a wireless
node network that will have as target the energy management in home automation
environments. This system will be capable of sending the collected data to a
server and will also be able to control certain nodes from others. Furthermore,
it will operate autonomously, not needing any user intervention to connect a
new node to the network or for sending data to the server.
To achieve that,
first, existing solutions have been analyzed and three nodes have been built,
having each one of them a different functionality. For their construction, both
their hardware electrical design and implementation, and their software implementation
have been developed. Their stability has also been tested with several
communications and functionality tests.
After the initial
tests, several aspects of the nodes where found to be improvable, so the boards
were revised and build again, one of each functionality, with the detected
errors corrected. Along with theses ones, three additional copies (nine in
total) were built with a different communications submodule, substituting the
original RF chip and its support components.
battery-operated nodes, current consumption was measured, and a battery
duration was estimated. Also, all these nodes were put under test as part of
one common network, where the coverage of the nodes and system stability were
checked, among others.
At the end of this
document, some conclusions of the obtained results are discussed, and the
original objectives of the thesis were checked to see if they have been
This group of
nodes will be left installed in the laboratory B105 permanently, allowing the
increase in the number of nodes and functionality in future work or as a base
for future tests.
El pasado día 25 de Mayo de 2016 se llevó a cabo una demostración de uso y funcionamiento del equipo de monitorización desarrollado para el proyecto DAMAS.
La demostración se llevó a cabo in situ en el Embalse de La Tajera, en Guadalajara. Se distribuyeron varias cajas de monitorización a lo largo de la corona superior de la presa y a cada una de las mismas se conectaron acelerómetros de alta precisión para recoger las vibraciones naturales de la estructura.
A la demostración asistió el consorcio al completo, es decir, la empresa Valoriza y el B105 Electronic Systems Lab. como parte de la Universidad Politécnica de Madrid. Además también asistieron los evaluadores del Centro para el Desarrollo Tecnológico Industrial (CDTi).
Tras la demostración los evaluadores dieron el visto bueno al proyecto y a los desarrollos llevados a cabo y dieron por finalizado el proyecto.