Figure 7-5 SysML Internal Block Diagram of the Rain Sensing Wiper system
In Figure 7-5we refine our initial description of the RSW by showing how parts are interacting inside the block named Rain Sensing Wiper. Previously to constructing the IBD, we have to define a model for the associations characterizing the relationships between the different blocks. Also, additional blocks are defined for example to type the ports. We show this model in another BDD that can be found in Figure 7-6.
The central part of Figure 7-5consists of the parts of the system that represent the embedded hardware. The parts underneath are used for mounting the system in the car. The parts above represent the software. A set of standard ports and interfaces are defined to represent the functional aspect of the communication between the parts. For example, the Processing Unit (ECU) accesses the Actuation (interface) of the wiper through the interface WiperECUCommunication. Details about the interfaces used in this IBD are found in Figure 7-6.
154Model Driven Systems Development with Rational Products
