# Research on the Design Method of _Camellia oleifera_ Fruit Picking Machine
## 5 Discussion  
This study proposes an innovative FAHP-FAST-TRIZ-E product design integration methodology based on the science, versatility, innovation and efficiency of product design decisions. The methodology aims to help designers develop innovative products from new perspectives. The applicability and effectiveness of the method are verified through design practice studies. Compared with other conventional design decision-making methods, the technique shows apparent advantages.  
The unique advantages of the proposed FAHP-FAST-TRIZ-E methodology lie in the accuracy of user orientation, scientific and focused clarity of decision-making, the ability to transform requirements for functional realization, the stimulation of innovativeness, and the concretization of solutions. Unlike traditional methods that rely only on the experience of designers or the guidance of a single theory, the methodology of this study integrates Fuzzy Hierarchical Analysis, Functional Analysis Systematic Technique Method, TRIZ Theory, and Topologically Transformable Theory, which can accurately transform user needs into specific design improvement points. This interdisciplinary integration not only deepens the understanding of user requirements but also improves the reliability of the design, ultimately leading to innovative solutions.  
In addition, this study demonstrates a new approach to bridge the shortcomings of a single theory and produce a universal design theory. The proposed FAHP-FAST-TRIZ-E methodology, by integrating different design theories, especially applying TRIZ theory and Extension transformation theory in solving design problems, provides designers with an efficient tool that helps them quickly generate solutions when faced with complex design challenges. The FAHP-FAST-TRIZ-E approach provides a new perspective to overcome the challenge of translating the principle guidance of TRIZ theory into concrete product conceptual solutions in previous design research. Topological transformation theory reduces the difficulty of translating the original TRIZ understanding. It provides new ideas for innovative design by formally investigating the solution of contradictory problems to generate specific design solutions.  
The conceptual design of this picker offers unique advantages over previous research pickers, and bears the potential to solve specific problems and meet market needs.  
1. Adaptability comparison. Compared with the traditional ground picker, the aerial rail-type _Camellia oleifera_ fruit picker is more adaptable to complex terrain. It can work flexibly in steep slopes and narrow passages in _Camellia oleifera_ forests, overcoming the difficulty of access for ground pickers.
2. Picking efficiency comparison. Through the application of automation and intelligent technology, the picking efficiency of the aerial rail picker is much higher than that of the traditional manual picking and ground picker. This not only improves the harvesting speed of _Camellia oleifera_ fruit but also reduces the labour intensity of fruit farmers.
3. Cost-benefit comparison. Although the initial investment is significant, the overall cost-effectiveness of the picker is superior to that of the traditional picking method, considering the long-term use of the picker and the cost-reduction effect (e.g., reduction of labour costs, reduction of fruit damage rate, etc.).  
In summary, the FAHP-FAST-TRIZ-E product design integration method embodies the innovation of product design decision-making methods and proves its effectiveness through empirical research. This approach provides designers with a new tool to better understand user needs, translate requirements, analyse functionality, reduce the difficulty of translating the original TRIZ understanding and generate specific design solutions, which ultimately promotes the development of the product service design field.