Generating and designing

This activity involves conducting research to explore alternative solutions and assess feasibility. Researching the problem involves considering various approaches for its resolution, including examination of subsystems, mechanical and electronic components, processes, associated costs, and the generation of multiple design options. These approaches help to consider different design options and the selection of the most suitable systems option, referred to as the proposed design, against the evaluation criteria developed from the design brief.

Generating and designing requires the creation of drawings, flow diagrams, and the exploration of testing and trialing possibilities, either through simulation or using actual components. Drawings are created using computer applications such as computer-aided design (CAD). This design and modelling of potential systems uses various methods, including physical models, scale prototypes, or virtual models with CAD software. CAD drawings should follow standard drawing conventions, including specific scales, to ensure dimensions are accurately represented relative to real-world measurements. CAD drawings should also adhere to conventions for symbols, line types, scale indications and notation.

Calculations are an example of modelling and may be necessary to ascertain functionality and performance. Selection of components, materials and tools for the system or subsystem is conducted with reference to technical data and specifications, including online sources. Calculations involve mathematical analyses to determine various parameters and behaviours of systems. Students can use calculations to ensure that the system meets performance requirements and adheres to safety standards. Calculations are also important in optimising designs and identifying areas for improvement.

The justification of the proposed design for the system to be fabricated/produced must be clearly indicated. During the iteration of the proposed design, the system, subsystems and/or components undergo continual testing and diagnosis.

Second Diamond

• Design and model systems.
• Develop drawings including flow diagrams (using digital tools or handdrawn).
• Conduct trials and testings and simulations and/or modelling (such as calculations) to assess feasibility and identify alternatives.
• Select manual and digital tools, and materials.
• Select appropriate electrotechnological and mechanical subsystems and components that will form operational systems and subsystems.
• Conduct diagnostic testing to ensure correct function of the system.
• Select and justify the most suitable systems option (proposed design from the feasible proposals (design options).

Evaluation

• Evaluate design options