Versatile synchronized real-time MEG hardware controller for large-scale fast data acquisition
| Autor: | Douglas Paulson, Lorenz Esch, Christoph Dinh, Kevin Pratt, Limin Sun, Yoshio Okada, Menglai Han, Matti Hämäläinen |
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| Rok vydání: | 2017 |
| Předmět: |
Finite-state machine
Workstation Computer science business.industry Controller (computing) 0206 medical engineering 02 engineering and technology 020601 biomedical engineering law.invention 03 medical and health sciences 0302 clinical medicine Data acquisition Software law Interfacing Internet Protocol business Instrumentation 030217 neurology & neurosurgery Computer hardware Communication channel |
| Zdroj: | The Review of scientific instruments. 88(5) |
| ISSN: | 1089-7623 |
| Popis: | Versatile controllers for accurate, fast, and real-time synchronized acquisition of large-scale data are useful in many areas of science, engineering, and technology. Here, we describe the development of a controller software based on a technique called queued state machine for controlling the data acquisition (DAQ) hardware, continuously acquiring a large amount of data synchronized across a large number of channels (>400) at a fast rate (up to 20 kHz/channel) in real time, and interfacing with applications for real-time data analysis and display of electrophysiological data. This DAQ controller was developed specifically for a 384-channel pediatric whole-head magnetoencephalography (MEG) system, but its architecture is useful for wide applications. This controller running in a LabVIEW environment interfaces with microprocessors in the MEG sensor electronics to control their real-time operation. It also interfaces with a real-time MEG analysis software via transmission control protocol/internet protocol, to control the synchronous acquisition and transfer of the data in real time from >400 channels to acquisition and analysis workstations. The successful implementation of this controller for an MEG system with a large number of channels demonstrates the feasibility of employing the present architecture in several other applications. |
| Databáze: | OpenAIRE |
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