Application of DIPA in LED Stage Light Design Improvement

• Main Authors: WEN-JIE ZHUO, 卓文傑
• Other Authors: Zone-Ching Lin
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/44411387034569528467

碩士 === 國立臺灣科技大學 === 機械工程系 === 105 === The paper takes LED stage light as a carrier in conducting patent analysis, and develops a DIPA that combines modified Importance Performance Analysis (IPA) with modified Decision-making Trial and Evaluation Laboratory (DEMATEL). After that, using DIPA in technical/functional matrix, the paper makes overall exploration of the mutual relational influence among the techniques and functions of LED stage light, and selects a combination of techniques and functions for prioritized improvement and another combination for secondary improvement. Finally, through modified Teoria Reshenia Isobretatelnych Zadatch (TRIZ), focusing on the technical/functional matrices of LED stage light that corresponds to the abovementioned combinations of techniques and functions for prioritized improvement and secondary improvement obtained from DIPA, improvement of techniques is proposed, and furthermore, the functions of product is further improved. The paper firstly takes LED projection light for example, and then explains one by one the research approaches used in the study. First of all, related technical patents of LED projection light have to be collected. Through the term and word segmentation system, the paper defines respectively the normalized numerical values of important technical words and functional words about the techniques and functions of the related LED projection light patents, and establishes a technical/functional matrix. After that, in accordance with the calculation steps of modified DEMATEL, the paper acquires technique- and function-related general relational influence matrices respectively, direct/indirect relationship diagram and causal diagram. In accordance with the physical meanings that the four quadrants on the causal diagram of techniques and function represent respectively, the paper explores the relationship among different techniques and different functions of LED projection light. After that, modified IPA is used to further explore the mutual relational influence between the techniques and functions of LED projection light. This research approach has to firstly define the importance scale of techniques and functions respectively in accordance with the previously defined normalized numerical values of the most important technical words and functional words of LED projection light.The paper suggests taking the importance of different technical categories as the importance level, and taking the functional performance of functional category as the performance level. Of them, the physical meanings of importance level of different technical categories can be divided into extremely important (4 points), important (3 points) and slightly important (2 points). And the performance level of the functional performance of different functional categories can be divided into excellent (4 points), good (3 points) and fair (2 points). Then, in accordance with the normalized numerical values of the most important technical words and functional words in each technical category and functional category, the paper defines the scoring intervals for importance level and performance level of the techniques and functions respectively, and draws a coordinate map for analysis between technical importance level and functional performance level. Finally, pairs of technical items and functions on each quadrant are drawn on the coordinate map. In accordance with the difference in physical meaning revealed in the four quadrants, the paper explores the mutual relationship between different techniques and different functions. Finally, from the second quadrant and third quadrant on the map, technical items and functional items can be found and taken into consideration for making prioritized improvement and secondary improvement, and also can serve as a reference for engineers to make follow-up studies.The paper further refers to the number of the related patents in the technical/functional matrix of LED projection light. The finally determined combination of techniques and functions of LED projection light for prioritized improvement and another combination for secondary improvement are: combination of B. base structure technique and C. heat dissipation enhancement; and combination of C. fin design technique and a. structural stability enhancement. Nevertheless, since modified IPA is not a quantified research tool, it can only be used to make preliminary analysis. If further analysis is to be made, there should be other research approaches attached to modified IPA. Lastly, the paper develops an innovative decision-making method ––DIPA, which is an integration of modified DEMATEL and modified IPA. With the DIPA, the paper uses the above method of LED projection light, searches the related patents of LED stage light, uses the term and word segmentation system, establishes the normalized numerical value of each technical word and each function word, and establishes again a technical/functional matrix of LED stage light. Based on the mutual relational influence between different techniques and different functions of the technical/functional matrix of LED stage light, the paper conducts overall analysis. Through the technical items and functional items of the second quadrant and third quadrant on the coordinate map for analysis between importance levels of different technical categories and performance levels of different functional categories drawn by modified IPA, and in accordance with the normalized numerical value of a technical category corresponding to a functional category in the technical/functional matrix of LED stage light, the paper determines a combination of techniques and functions for prioritized improvement and another combination for secondary improvement. Finally, a combination of techniques and functions for prioritized improvement and another combination for secondary improvement are selected by DIPA. The paper further refers to the number of the related patents in the technical/functional matrix of LED stage light. Through the technical/functional matrix of LED stage light and modified TRIZ, improvement of techniques is proposed so as to enhance the overall functionality of product. DIPA developed in the study can be provided to patent engineers to improve the techniques used by a certain product in the later days, and can be a reference for analysis on improvement of functions and techniques of the product.