The Internet of Things (IoT) holds enormous promise of new capabilities for users and new opportunities for businesses. It also presents enormous challenges to systems engineers. Model-Based Systems Engineering (MBSE) potentially provides an efficient way to address those challenges, being holistic, integrated, flexible and object-oriented. To explore this promise, Intercax has started a series of technical notes on modeling the Smart Home, a well-known example of the IoT, using MBSE, SysML and Syndeia, an integration platform linking systems engineering to the rest of the engineering process.
In Part 1 of this series, we described an MBSE process going from requirements specification to a detailed multi-level functional design. In Part 2 we created a structural reference architecture, allocated functions to structural elements, added parametric modeling for cost and power consumption, and imported IoT component product data from external databases
In this technote (Part 3), we will:
- create a specific configuration, a four-room home,
- check functionality against the reference model,
- build a complete four-room IBD connection model,
- evaluate cost and power consumption using the embedded parametric models (with ParaMagic) and
- use the final design to create a Bill of Materials in a commercial PLM system (using Syndeia).
The next notes in the series describe how this model can link to models of different type and scale, including CAD models of the home, time-varying simulation models, and larger SysML models, e.g. the Smart Grid for electrical power.
Reference architecture for a Smart Home IoT system as a SysML block definition diagram (BDD)4Rm Home BDD, showing redefinition of part properties for the generic components in the Reference Architecture
4 Rm Audio Subsystem block definition diagram, showing specialization and subsetting of audio components
ParaMagic Browser for IoT System Cost (left) and Power Consumption (right), after solution
Syndeia dashboard in preparation for building Bill-of-Materials in Teamcenter PLM
- Smart Home – Modeling IoT with SysML (Part 5: Design, Simulation and System Architecture) technote
- Smart Home – Modeling IoT with SysML (Part 4: Smart Home to Smart Grid) technote
- Smart Home – Modeling IoT with SysML (Part 3: Procurement to Evaluation) technote
- Smart Home – Modeling IoT with SysML (Part 2: Functional Design to Procurement) technote
- Smart Home – Modeling IoT with SysML (Part 1: Requirements to Functional Design) technote
- Smart Home – Modeling IoT with SysML Part 5: Design, Simulation and System Architecture
- Smart Home – Modeling IoT with SysML Part 4: Smart Home to Smart Grid
- Smart Home – Modeling IoT with SysML Part 3: Procurement to Evaluation (This post)
- Smart Home – Modeling IoT with SysML Part 2: Functional Design to Procurement
- Smart Home – Modeling IoT with SysML Part 1: Requirements to Functional Design