Design, implementation and monitoring of an embedded data logger using a free hardware platform

Abstract

The present project work is about to design, implement and monitoring of an embedded data logger using a Single Board Computer (SBC). It will consist of a hardware board, 2 pressure sensors and one adaptation circuit for them. All assembled in a PVC box with controls and LED indicators, pluggable to 100-240V~ 50-60Hz. The board will read the value of the sensors and store it in a local database hosted in a removable storage device at speed at least 50 lectures per second for each sensor (100 writes per second in total). This document reflects the full process of design and implementation, and also the instructions for manage it, the explanation of the user interface. It will start with the selection of the components, especially the board, which has to be able to read and write in the database at needed speed. After that starts the process of verify if the board is suitable to accomplish the work at needed speed and without mistakes or any problem. Next step is the process of install the database. After that it is needed to focus on the sensors and how to connect them to the board, having the need of one or more circuits of adaptation like voltage range and analog-to-digital conversion. In this part those circuits will be designed and implemented, and finally, tested. Last part of the project is the research of the language used in those kind of applications and the programming language of the board (Arduino, Linux, etc...) and the process of implementation step by step, testing each part of the code by different ways. Implementation and connection of all the parts and finally the test of the final device, checking all the features.