Pablo Ruiz

At CTN we have built a demonstrator to demonstrate 3D technologies, interactive displays, virtual reality, augmented reality and gamification, among others. We have based our work on three concepts:

• Digital twin of aquaculture 4.0
• Digital twin for shipbuilding industry 4.0
• Digital twin for new technologies in port areas.

This project is conceived to help Europe in the implementation of D11 of the MSFD. In this case CTN has developed a complete tool to register and process impulsive noise in the Mediterranean Sea. This tool is being used by several Member States in the Mediterranean like Spain, France, Italy, Greece, Malta, Turkey…

In this project I have designed, developed, and deployed the ‘Impulsive Noise Register in The Mediterranean Sea’. The first version of this software has a register of noise generating activities and calculate the indicators of impulsive noise. The backend was developed with Django (python) and the frontend with Vuex.js (Javascript). Furthermore, there is another backend based on ARCGIS where the layers and maps are found.

Development of intelligent automated systems that allow to optimize the feeding processes in the aquaculture facilities. In particular, development of intelligent automatic feeders by passive acoustics for the detection of satiety in fattening fish

In the context of an European Project, I worked with the Polytechnic University of Cataluña (Spain), the Canary Island Ocean Platform (Spain) and with SMID Technology (Italy) among others to develop and manufacture a Smart Hydrophone from scratch capable of processing indicators of Descriptor 11 of the Marine Strategy Framework Directive (MSFD) in real time.

The processing algorithms both in prototype and in hardware were work developed entirely for CTN. I was in charge of design all the algorithms based on requirements of MSFD and to port them into a microcontroller: LPC4300 Series: High-Performance Microcontrollers (MCUs) based on Arm® Cortex®-M4/M0 Cores. The firmware was developed in C with a little portion of code in assembler when it was necessary. The most important library used in the firmware was CMSIS DSP Software Library (keil.com). In total we managed to integrate up to 8 different algorithms running in real time successfully. • MSFD Indicator 11.2.1 • MSFD Indicator 11.2.1. Extended • Noise Band Monitoring • MSFD Indicator 11.1.1 • Click Detector • Whistle Detector • Low Frequency Tone Detector • Sound Source Localization The most importants challenges in this project were: • Perform FFTs of 4096 points in a really small memory • Optimize use of memory in some of algorithms doing use of auxiliary memory modules presented in LPC4300. • Get real time performance in Sound Source Localization (TDOA algorithm)
Related deliverable: D.06.2 – Integrated passive acoustic transducer development.

Application No.: P201232056 Country of priority: Spain Holding company: Asociación Centro Tecnológico Naval y del Mar

Inventors (p.o. Of signature): Juan Antonio Madrid Mendoza, Pablo Ruiz Molina, Noelia Ortega Ortega, Daniel Alonso Moreno, Jordi Solé Rebull, Marta Galindo Romero

One of the first prototypes that I built in CTN was an underwater modem from scratch. The idea was to study the feasibility to get an 2D underwater network.

In this project I entirely designed the underwater modem and programmed the software. Specifically, I made: • Design a prototype from scratch. • Supervise electronic works. • Firmware on a Thinkerboard using C++. o Control of analog/digital inputs/ouptuts. o Integration of libraries to use FSK and OFDM modulations. o Communication protocol from scratch to improve the performance as opposed to low bandwidth. o Tests in control and in real scenarios.

With directional hydrophones I achieve a successful communication up to 500 meters with 128 KB/sec as transmission rate.

In 2008 the R&D department of BMW was developing technology to automate driving of their vehicles. Through the Technical University of Munich, Germany (TUM), I had the opportunity to collaborate with them to develop a part of that technology.