# Research on Design Method of Product Functional Hybridization for Integrated Innovation
## 3 Proposed Methods
### Process Model of Product Functional Hybridization Design  
Starting from the existing product function system, its position on the S curve is judged, and the scenario analysis model based on the dispersion tree is then applied to obtain goal products for function hybridization. Finally, product functional hybridization can be achieved through product gene recombination. A process model of product functional hybridization design is shown in Figure 14.  
Step 1: Preparation phase. The prototype product is selected, and the application timing of the product functional hybridization is judged. Combining the development status of the product technology, the technology maturity prediction method is applied to  
Figure 14: Process model of product functional hybridization design. Figure 13: Transcription process of the product genome. judge whether the prototype product is in the maturity stage. If not, the other innovation methods are chosen. Step 2: Acquiring goal products. (1) Establishment of the initial scenario of the prototype product. After analyzing the main daily activities of the prototype product and identifying its main application audience and the general environment, the initial scenario analysis model of the prototype product can be built. (2) Goal product prediction for functional hybridization. An extension model of the relevant elements as action objects, people, or objects is established and then extended according to the divergence tree. After that, different scenarios can be built based on the obtained extension model to acquire scenario-related products. (3) Evaluation of scenario-related products. After acquiring scenario-related products, the occurrence probability and the weight of the scenario-related product relative to the prototype product are obtained by the designer based on their own design experience. Finally, the probability scores and weights are multiplied to determine the scores of scenario-related products, as shown in Table 1.  
(4) Determination of goal products. The scenario-related products with higher scores are identified according to the score list of scenario-related products. On this basis, goal products are determined according to market demand. Step 3: Establishing a new product concept structure. (1) The product genomes of the prototype product and the goal product are built separately. (2) The product genes are recombined. The allelomorphic genes and personality genes in the prototype product and goal product genomes are determined. The allelomorphic genes are transformed into shared genes through a sharing operation, and then a new product genome is formed by recombining shared genes and personality genes according to the separation, addition, replacement, and variation operations. (3) The new product concept structure is generated through transcription and translation. Step 4: Problem-solving and evaluation of the new concept structure. (1) By analyzing problems of the new product concept structure, whether there are problems in the new product concept structure is judged. If the answer is yes, the problems are solved according to TRIZ problem-solving tools, such as the Invention Principle, Separation Principle, 76 Standard Solutions, Trimming, etc., [74; 75; 76]. Then, the improved product concept structure is established. (2) Solution evaluation is performed on the improved product concept structure to form a new product. In this paper, the analytic hierarchy process (AHP) [77] is used to evaluate the solution. Firstly, the hierarchical structure of the evaluation index is established. Secondly, the pairwise comparison judgment matrix is constructed. Then, the relative weights of the compared elements are calculated by the judgment matrix and consistency checking is carried out. Finally, the total scores of each solution are calculated. The specific steps of consistency checking are as follows:  
1. Calculate the consistency index (CI), as shown in Equation (3).