Elena Maria Migliorin

• Development of Printed Circuit Board (PCB) for low-frequency IoT (Internet of Things) applications in industrial setting (12-24V) Realtime Embedded is developing a custom made IoT solution to allow remote control of a system used for the waste water management in residential buildings and commercial activities. Specifically, I developed the schematics and layout (4-6 layers) in KiCad of the PCB that manages the sensors interfaces and the communication with the Cloud. I was responsible for the hardware interfaces for some of the sensors in the system (fluid pressure, temperature, and weight), the power management of the board (linear regulators and buck DC/DC converter from 10-30V to 5V and from 12V to 3.3V), and communication interfaces on OSI 1 (PHY) for CAN, RS 232/485, I2C, SPI, Ethernet, and USB (C and Mini). I carried out the integration of microcontrollers and Raspberry Pis in the custom made PCB
• In addition to schematic and layout, I developed prototype boards by testing and debugging the hardware, and generated the documents for production and BOM (Bill of Material). During the prototyping phase, I assembled the mechanical structure of the system and produced the appropriate documentation.
• Finally, I have assisted the customer in the production phase, which included testing the product for EMC pre-compliance in a specialized lab. The test targeted both immunity and emissions, according to the light industrial standards.

Design in VHDL of a full-duplex synchronous converter Ethernet-SLIP to speed up the transmission of messages in BT's proprietary railway communication system, I have developed a new interface Ethernet-SLIP in the OSI Layer 2 and I have tested the communication chain in the OSI Layer 3. The new converter was developed in VHDL using XIlinx Vivado ISE and standard communication protocols. I have simulated the new interface with Modelsim both as a stand-alone component and integrated in the whole VHDL code. I have then tested the new code on a proprietary board with the aid of Xilinx ChipScope PRO.

During the internship I was responsible of testing one of the proprietary boards of the ATE (Automatic Testing Equipment) that has been updated and modified after the End of Life of some of its components. The board includes a variable-voltage/fixed-current system to properly stimulate the element under test in the ATE. I have tested if the updated board behaved as expected and analyzed the operational limits in terms of frequency response and application range (voltage, current).