Hybrid control and acquisition system for distributed sensors for environmental monitoring

Fabio Garufi; Fausto Acernese; Alfonso Boiano; Rosario De Rosa; Rocco Romano; Fabrizio Barone

doi:10.1117/12.715364

10 April 2007 Hybrid control and acquisition system for distributed sensors for environmental monitoring

Fabio Garufi, Fausto Acernese, Alfonso Boiano, Rosario De Rosa, Rocco Romano, Fabrizio Barone

Proceedings Volume 6530, Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007; 65301M (2007) https://doi.org/10.1117/12.715364
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

In this paper we describe the architecture and the performances of a hybrid modular acquisition and control system prototype we developed in Napoli for the implementation of geographycally distributed monitoring and control systems. The system, an improvement of a VME-UDP/IP based system developed by our group for interferometric detectors of gravitational waves, is based on a dual-channel 18-bit low noise ADC and 16-bit DAC module at 1 MHz, managed by an ALTERA FPGA, that can be used standalone or mounted as mezzanine (also in parallel with other modules) on a motherboard. Both the modules and the motherboard can send/receive the configuration and the acquired/correction data for control through a standard EPP parallel port to an external PC, where the real-time computation is performed. Experimental tests have demonstrated that this architeture allows the implementation of distributed control systems, using a standard laptop PC for the realtime computation, with delay time &Dgr;t < 30 &mgr;s on a single channel, that is a sustained sampling frequency f_c > 30kHz. Each module is also equipped with a 20-bit slower ADC necessary for the acquisition of an external calibration signal. The system is now under extensive test in two different experiments, i.e. the control of a Michelson Interferometer to be used as Velocimeter for Seismic Waves in Geophysics and the control of the end mirrors a suspended Michelson Interferometer through electrostatic actuators, a prototype for mirror control for Interferometric Detectors of Gravitational Waves.

Citation Download Citation

Fabio Garufi, Fausto Acernese, Alfonso Boiano, Rosario De Rosa, Rocco Romano, and Fabrizio Barone "Hybrid control and acquisition system for distributed sensors for environmental monitoring", Proc. SPIE 6530, Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007, 65301M (10 April 2007); https://doi.org/10.1117/12.715364

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available