Data Acquisition System For Computer Science Electrical Automation ENG (Milano Leonardo) Data Acquisition Project 2020-21 The project, purely optional, allows the student for increasing its final assessment up to 3 points. The project will consist of three steps (every point will be evaluated up to 1 point) and can be completed by the registration of the mark. The project will be developed individually. The project can be developed on a microcontroller platform of this type: https://developer.mbed.org/platforms/ST-Nucleo-F334R8/ or equivalent such as Arduino, Raspberry etc, etc ... Furthermore, in order to realize the data acquisition system, a temperature sensor of this type (DHT11) will be required: https://amzn.to/3hGFUs8 and a card that allows WI-FI connection of this type (ESP8266): https://amzn.to/2JepGrC You will also need a pair of resistors and capacitors and a breadboard to organize the circuit to use the entire dynamics of the converter within the chosen board that works in the 0-3 V range. The main idea is to create a small thermometric station that connects to the WI-FI to the home network or that created by a hotspot there a cell phone and create a web page from where with LabVIEW you download the data and you can view and save them in a text file. The deadline for the presentation of the project is the April 30^st 2021.
	1^st step of the project: Through a microcontroller connected via USB, communicate with the PC via the serial port (simulated via USB). The student must create a LabVIEW program that allows the acquisition of data from the temperature sensor present on the board. The data must be shown on a waveform chart with the possibility of modifying the reading time, with a resolution from 1 s to 60 s with steps of 10 s (1 s, 10 s, 20 s,etc.etc.). In addition to the possibility of displaying the data, it must be possible to save the data in text files, which as a name must have the date on which the data hour in which will be saved (dd_mm_yyyy_hh_mm_ss.txt). There will be a switch button with a label on it saying SAVE, that when will be pushed the program will create a new file and will start to save data. When the button will pushed another time the program will stop to save data. Every time the user will push the button to save it will be created a new file. In the file will be two columns one for time (hh:mm:ss) the data will be saved and the other for temperature.
	2^nd step of the project: Connect the microcontroller board to the WIFI board, for example ESP8266. Once the micro is connected to the card it must be possible to create a web page in which the temperature of the sensor must be displayed. Then you have to develop a LabVIEW program that allows data visualization through the LabVIEW http blocks, downloading data from the webpage you have created and you are connected on the subnet. (https://zone.ni.com/reference/en-XX/help/371361R-01/lvcomm/http_client/).
	3^rd step of the project: Save the temperature, date and time data of the measurement in a database in PostGres (https://www.postgresql.org/) through the database connectivity toolkit LabVIEW (https://bit.ly/2Vh918o) and allow the user to view database data on a LabVIEW program while the program is running.

Home Page dei Corsi di Misure - Didattica