To improve the development of advanced electron microscopes, and support the decisions made by its engineers, Thermo Fisher Scientific has introduced a reference architecture with the help of TNO-ESI.
Based on a clear functional breakdown, it allows to specify the TEM according to three aspects: Workflows (what is expected by the system), Functions (what does the system do), and Decomposition (how does the system realize this). Following this architecture, a TEM is broken down into subsystems, i.e. combinations of hardware and software, interconnected by high-level interfaces.
Capella has been chosen to implement this approach. With its native support of a Model-Based Systems Engineering (MBSE) method, and used with a system decomposition approach, Capella makes it easier to maintain consistency in the design of the systems. It also increases automation opportunities by leveraging the model’s digital format.
In addition to Capella, a specific add-on has been developed to obtain quantitative information, such as throughput numbers, for a particular workflow. By using the open-source simulation tool POOSL, systems engineers can simulate Capella’s Functional Chains, and visualize the results using the freely available TRACE4CPS tool.