Con esta herramienta te facilitamos un acceso a todas las ofertas y demandas de tecnología europeas y a búsquedas de socios para participar en propuestas europeas de I+D publicadas en la red Enterprise Europe Network, pudiendo filtrar los resultados para facilitar las búsquedas más acordes con tus necesidades.

¿Quieres recibir estos listados de oportunidades de colaboración en tu correo de forma periódica y personalizada? Date de alta en nuestro Boletín

Los términos de búsqueda han de ser en inglés.

Plataforma de adquisición de señales acústicas y procesamiento de datos en tiempo real

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TORS20150122002
Publicado:
13/07/2015
Caducidad:
12/07/2016
Resumen:
Un centro de I+D serbio ha desarrollado una plataforma FPGA (Field Programmable Gate Array) de adquisición de señales acústicas y procesamiento de datos en tiempo real. Esta plataforma permite ejecutar varios algoritmos complejos en tiempo real y ofrece ventajas en términos de seguridad, fiabilidad, rapidez y consumo de energía. La plataforma FPGA se alimenta mediante conexión USB o fuente de alimentación externa. La aplicación de usuario para monitorización y control se ha diseñado en entorno de LabVIEW. Se buscan socios con el fin de establecer acuerdos de cooperación y comercialización con asistencia técnica.




Details

Tittle:
Platform for real time acoustic signal acquisition and data processing
Summary:
A Serbian R&D institution developed an FPGA (Field Programmable Gate Array) platform for real-time acoustic signal acquisition and data processing. The platform enables execution of various complex algorithms (such as beamforming) in real time and brings many benefits in terms of safety, reliability, rapidity, and power consumption.
The R&D institution is interested in commercial agreement with technical assistance and technical cooperation agreement.
Description:
The acoustic system for localization of the dominant noise source and sound (noise) monitoring in the surrounding field is performing tracing of environmental noise sources (form 100 Hz to 12 kHz), based on beamforming delay-and-sum algorithm, calculating signals from 360 degrees (horizontal plane) around the measurement location. The system is mounted on a vertical stand 4 m above the ground and developed by Serbian R&D institution. The system performs calculation of directivity pattern vector of 60 measurement angles (6 degree step), and calculation of two waveforms from two directions: from the direction of the dominant noise source and from the direction preselected by user. Signal suppression of the noise source at the ±30° regarding the observed sound source is over 12 dB in frequency range between 500 Hz to 6000 Hz. The averaging of the directivity pattern is set to 125 msec, and another averaging time constant can be set to N · 125 msec.
The system is composed of a platform for acoustic signal acquisition and data processing and a platform for monitoring and control.The platform for acoustic signal acquisition and data processing consists of the sensor block, the interface block and the central block. The sensor block is composed of digital MEMS microphone array, arranged in a specific pattern, which covers both the advantages of ring and star arrays. The sensor block performs acoustic signal sampling, analog-to-digital conversion and PDM (Pulse Density Modulation) conversion. The interface block connects the sensor and the central block. The central block is based on FPGA platform and it performs data acquisition and processing, and sends results via USB 2.0 interface (realized on a microcontroller) to the platform for monitoring and control - a computer with a user application. The FPGA platform can be powered via USB connection or with an external power supply.
The user application for monitoring and control is designed in LabVIEW environment. On the graphical user interface the following graphs are shown:
· time diagram of the selected microphone (1 - 33);
· time diagram of the selected direction (0 - 59);
· time diagram of the dominant sound source direction;
· 360 degrees directivity pattern (6 degree step) for 125 msec averaging;
· 360 degrees directivity pattern (6 degree step) for N · 125 msec averaging.
The user application sends commands to the FPGA platform (which microphone to monitor, which direction to monitor, averaging time constant). Future realizations will include corrections for wind speed and direction, and speed of sound.
The R&D institute is looking for partners for Commercial agreement with technical assistance to design and adapt the technology in order to provide tailor made solutions in accordance to the specific needs of the market/client requirements.This technology can be used in various systems and devices for detection, localization, and/or classification of acoustic sources;specific fields of application are:
· medical (ultrasound probes, patient care),
· industrial (nondestructive testing, material examination, power transformers diagnostics),
· military (submarine localization, localization of the sniper's position in a counter-sniper system),
· ecology (noise pollution sources localization),
· biology (cataloging wildlife),
· civil (videoconferencing, home surveillance).
R&D institutions willing to cooperate on further development of the solution are sought in order to establish technical cooperation agreement.
Potential partners should be companies or R&D institutions from the field of Acoustics, Electronics, Signal Processing,Embedded Systems and Real Time Systems.
Advantages and Innovations:
Acoustic beamforming can be regarded as a spatial filter operation for the data received from a microphone array. This technique of sound source localization has found a wide range of applications in many fields.
Since the most optimal solution assumes that data from all the microphones to be processed in parallel, the application of FPGA (Field Programmable Gate Array) technology arises as the best solution for the implementation of the beamforming algorithm on a single module and real time execution, especially due to the possibility of adding new algorithms and improving the existing. Additionally, FPGAs are bringing many benefits in terms of safety, reliability, rapidity, and power consumption. Recently, digital MEMS (Micro Electro Mechanical Systems) microphones have been introduced. Their quality is continuously improving, resulting in very compact and lightweight designs on a single chip (microphone, signal conditioning, analog-to-digital conversion). A digital MEMS microphone connects to an FPGA directly on the digital level, without converters.
The facts posed above induced an idea to design an acoustic system for localization of the dominant sound source and sound (noise) monitoring by implementation of the conventional delay-and-sum beamforming algorithm on FPGA platform with a sound receiver system based on digital MEMS microphones. It can be used as a standalone device with a computer,which can be powered via USB connection. Intuitive user interface of the user application, realized in Labview, gives good presentation of surrounding sound sources.
Generally, the developed FPGA platform presents a good solution for various efficient real-time low-cost low-power systems with beamforming algorithm and a high number of input/output signals.
Stage of Development:
Prototype available for demonstration
IPs:
Patents granted

Partner sought

Type and Role of Partner Sought:
The R&D institute is looking for partners for commercial agreement with technical assistance to design and adapt the technology in order to provide tailor made solutions in accordance to the specific needs of the market/client requirements.This technology can be used in various systems and devices for detection, localization, and/or classification of acoustic sources;specific fields of application are:
· medical (ultrasound probes, patient care),
· industrial (nondestructive testing, material examination, power transformers diagnostics),
· military (submarine localization, localization of the sniper's position in a counter-sniper system),
· ecology (noise pollution sources localization),
· biology (cataloging wildlife),
· civil (videoconferencing, home surveillance).
R&D institutions willing to cooperate on further development of the solution are sought in order to establish technical cooperation agreement.
Potential partners should be companies or R&D institutions from the field of Acoustics, Electronics, Signal Processing,Embedded Systems and Real Time Systems.

Client

Type and Size of Client:
Industry >500
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
Serbian
Slovenian

Keywords

Technology Keywords:
01003023 Actuadores, sensores medioambientales y biométricos
01002003 Ingeniería electrónica
01003008 Intercambio / procesado de datos, software personalizado
01006009 Procesado de señales
01002004 Sistemas embebidos y sistemas en tiempo real