Design and Implementation Issues

Thomas, P.J. and Evans, N.J. (1991). Introduction to design and implementation issues of microprocessor based systems. Chapter 2 of Microprocessor Based Protection Systems, edited by A. Churchley, Elsevier Applied Science, London. 

The next two levels. Design Representation and Physical Representation, provide the information necessary to reason about individual component design and implementation issues. Some parts of level 4 may not be needed if at least portions of the physical design can be generated automatically from the models at level 3. 

From a health and safety study report in the United Kingdom, it has been found that, of the total number of accidents involving control systems, 44% resulted from specification-related issues, 15% from design and implementation issues, 6% from installation and commissioning, 15% from O M issues, and 20% from changes after commissioning (indicated anticlockwise in the figure). 

Figure 3. Optical sensor design and implementation issues...

Guimares, E.G., Cardozo, E., Moraes, H., Coelho, P.R. Design and implementation issues for modern remote laboratories. IEEE Trans. Learn. Technol. 4(2), 149-161... 

The design and implementation of safety systems must be undertaken with a view of two issues ... 

Taking these issues into the process sampling domain. Figures 3.12-3.14 show some of the many ways in which sampling valves are designed and implemented in current process technology. A fair estimate... 

Section 5.3 described a number of alternative design and implementation strategies for near-infrared analyzers, suitable for operation in a process analytical environment. However, none of these analyzers can operate without a robust, maintainable and repeatable sampling interface with the process sample under consideration. In addition to this question of the optical interface to the sample, there is a whole wider area of concern, which is how far the particular sample interface is representative of the sample in the process as a whole. This complex issue is not addressed here, and is dealt with separately in Chapter 3. 

Baertschi SW. Current trends in photostability. Practical considerations in designing and implementing photostability studies. Stability of Pharmaceuticals Current Issues, Practices, and Technologies, University of Wisconsin-Madison Seminar Series, Costa Mesa, CA, November 13-14, 2000. 

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