This is a student design project to present the procedures and the results of conceptual design for identification systems. The sub-function structure of the identification system is created after recognizing the requirement and establishing the specification. The physical effects, physical principles and solution principles are found based on the sub-functions, and the alternatives or combined solution principles are generated. The Saaty method with the modified normalized values is used to determine the relative importance or weighting factors of the standard evaluation items by paired comparisons. The eigenvalues and eigenvectors of the evaluation items and alternatives are determined. The web method is then used to determine the most preferred design of the alternatives and the best alternative is recommended. It is learned that to determine the sub-functions, the physical effects, physical principles, solution principles and combined solution principles, surveys of evaluation items, matrices of evaluation items and alternatives are very difficult, tedious and time consuming.

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