ࡱ> `b_[ $bjbj TjjUlTl4hzdLU'26"4,1\&&&&&&&$( *v&A@S _&Y,,'YYYgX,,&YA&YYw%%[ &,* r &8&%'0U'&-~/ &YRequirements Specification Version: 0.02  CREATEDATE \@ "MMMM d, yyyy" \* MERGEFORMAT February 10, 2002 Document ID: OpenEEG-Software-REQ_SPEC Group Name: OpenEEG Editor: John Morrison (OpenEEG@ahc.net.au) Group Members: name student number John Morrison OpenEEG@ahc.net.au Moritz v. Buttlar moritzvb@users.sf.net Rob Sacks editor@realization.org Approved: Date: Table of Contents  TOC \o "1-3" \h \z  HYPERLINK \l "_Toc1222685" Version History  PAGEREF _Toc1222685 \h ii  HYPERLINK \l "_Toc1222686" 1.0 Introduction  PAGEREF _Toc1222686 \h 1  HYPERLINK \l "_Toc1222687" 2.0 Environment Characteristics  PAGEREF _Toc1222687 \h 2  HYPERLINK \l "_Toc1222688" 2.1 Hardware / Support Software  PAGEREF _Toc1222688 \h 2  HYPERLINK \l "_Toc1222689" 2.2 Peripherals  PAGEREF _Toc1222689 \h 2  HYPERLINK \l "_Toc1222690" 2.3 Users  PAGEREF _Toc1222690 \h 2  HYPERLINK \l "_Toc1222691" 3.0 Conceptual Model  PAGEREF _Toc1222691 \h 3  HYPERLINK \l "_Toc1222692" 4.0 Life-Cycle Considerations  PAGEREF _Toc1222692 \h 4  HYPERLINK \l "_Toc1222693" 4.1 Core System  PAGEREF _Toc1222693 \h 4  HYPERLINK \l "_Toc1222694" 4.2 Standard System  PAGEREF _Toc1222694 \h 4  HYPERLINK \l "_Toc1222695" 4.3 Extended System  PAGEREF _Toc1222695 \h 4  HYPERLINK \l "_Toc1222696" 4.4 Fundamental Assumptions  PAGEREF _Toc1222696 \h 4  HYPERLINK \l "_Toc1222697" 4.5 Potential Changes  PAGEREF _Toc1222697 \h 4  HYPERLINK \l "_Toc1222698" 4.6 Gantt Chart  PAGEREF _Toc1222698 \h 4  HYPERLINK \l "_Toc1222699" 5.0 Functional Requirements  PAGEREF _Toc1222699 \h 5  HYPERLINK \l "_Toc1222700" 5.1 Functional Summary  PAGEREF _Toc1222700 \h 5  HYPERLINK \l "_Toc1222701" 5.2 Screen Layouts  PAGEREF _Toc1222701 \h 5  HYPERLINK \l "_Toc1222702" 5.3 Example of Usage  PAGEREF _Toc1222702 \h 5  HYPERLINK \l "_Toc1222703" 5.4 System Error Handling  PAGEREF _Toc1222703 \h 5  HYPERLINK \l "_Toc1222704" 6.0 Data / Database Requirements  PAGEREF _Toc1222704 \h 6  HYPERLINK \l "_Toc1222705" 7.0 Non-Functional Requirements  PAGEREF _Toc1222705 \h 7  HYPERLINK \l "_Toc1222706" 8.0 Glossary  PAGEREF _Toc1222706 \h 8  HYPERLINK \l "_Toc1222707" 9.0 Summary  PAGEREF _Toc1222707 \h 9  HYPERLINK \l "_Toc1222708" 10.0 Acknowledgments  PAGEREF _Toc1222708 \h 10  Version History IssueDateChange0.0111/02/02Creation0.0213/02/02Some small additions here and there 1.0 Introduction The software described in this specification will act as a skeleton for plug in modules designed and written for man machine interfacing (eg EEG, ECG, etc) written by various authors. The specification will set down rigorous interfaces to use between these modules to remove incompatibilities and allow for mixing or modules built by any author. This means that modules can be designed and used that werent even thought of at design time of this software. This platform will be designed so that it doesnt require recompiling to incorporate new or updated modules. The platform itself should require very little updating after it is stabilised. The main application for the system is real-time biofeedback of biological signals, especially Neuro feedback. Great flexibility is achieved by the mixture of different modules and their interconnections, which is controlled by a configuration file. This is also referred to as a protocol. Summarise system and requirements What needs does it satisfy? What does it do? Who will use it? 2.0 Environment Characteristics 2.1 Hardware / Support Software The software will be as platform independent as possible and be able to run on Linux or Windows platforms. This should be achieved by writing code that can be cross-compiled for both platforms. The use of embedded systems as a host is also possible. SYMBOL 183 \f "Symbol" \s 10 \h itemised minimal configuration SYMBOL 183 \f "Symbol" \s 10 \h itemised optimal configuration 2.2 Peripherals The software will interface with any biological signal measurement hardware currently available. This is achieved by the addition of hardware specific interface modules for each device. 2.3 Users The initial audience will be the users on the buildcheapeeg e-mail group and users of the hardware being designed there. The wider audience is everyone that has an EEG, ECG or any physical monitoring devices. 3.0 Conceptual Model An abstract model aiding the user in understanding the system. Usually a high level diagram like a DFD or Use Case. 4.0 Life-Cycle Considerations Define goals for given time frame: ensure each feature is clearly, but briefly, described. 4.1 Core System The core system will read a plain text configuration file (Hand written) that describes the connections necessary between modules to achieve the users requirements. The core system will be restricted to a text display (Though modules may have higher requirements.). The interfaces will be fully developed and available for authors wishing to build modules for the system. A configuration file could describe a simple system for EEG display, consisting of a hardware module connected to a filter/smoothing module then on to a display module. Or it could be as complex as the user pleases adding a recording module, bi-audio feedback module synced to the users brain waves and anything else that the user wants to add. List of features that make up the core of the system. This should be a working core or minimal version of the system. All other features will be added incrementally to this core. 4.2 Standard System The standard system will include the addition of a GUI interface to display the modules, as they are loaded. Standard recording and playback modules will be added to standardise the format of recorded data and to aid users to swap data and experiment. List of features to be added to the core system to make up the system planned for final delivery. 4.3 Extended System A separate GUI design platform will be created to help in the creation of the configuration files. List of foreseeable future extensions to standard system. 4.4 Fundamental Assumption The input data from all biomedical measurement devices will consist of time-series of real numbers. Differences between signals are mainly in timescales. These timescales reach from 1 Hz for slow-changing signals like temperature or skin resistance to 2 kHz for EMG measurements. eg. Which features are definitely excluded, what does the above depend on? 4.5 Potential Changes Not extensions to the system. What features listed above may be changed due to later discoveries. 4.6 Gantt Chart Outline proposed timetable for the major milestones for the project. 5.0 Functional Requirements Precisely describes services provided by the standard system from the users viewpoint. 5.1 Functional Summary Describe in a consistent and detailed manner how to use each function of the system. Heading (state of interaction eg. Mark Selected Section of Text.) Description (brief, often one sentence) Input (from the users perspective) Output (from the users perspective) Error handling (if all handled uniformly, describe this in section 5.4) 5.2 Screen Layouts The screen layouts will be determined at a later stage. The first step is to get the core system running. Major ones only, with formal definition of fields 5.3 Example of Usage An example of typical usage. Ensure this is precise! This will become the Tutorial part of the Users Manual. eg. Show snap shots of the screen with brief comments: 5.4 System Error Handling 6.0 Data / Database Requirements Using a simple diagrammatic notation like NIAM or ER. 7.0 Non-Functional Requirements (itemised only) 8.0 Glossary 9.0 Summary 10.0 Acknowledgments PAGE  Requirements Specification Version 0.01 PAGE 10 ITB424-REQ_SPEC PAGE \# "'Page: '#' '" Precisely defines properties and constraints which the software product must satisfy (WHAT is going to be done not HOW). Generally for a non-technical audience. PAGE \# "'Page: '#' '" Reference: Sommerville: part 2 (chapters 4 to 7) and Pressman: part 2 PAGE \# "'Page: '#' '" Limit: 22 pages (excluding title page, table of contents, and version history). 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