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A.5 Humidifier: A.5.1 Introduction: This subannex gives a model of a room humidifier as an example of signal flows and state machines.

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Figure 64: Total humidifier system example (MOCKUP)
Figure 65: Internal structure of the total humidifier system - black box vs details
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SysPhS-1.1
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About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes
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A.5 Humidifier

A.5.1 Introduction

This subannex gives a model of a room humidifier as an example of signal flows and state machines.
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Some signals in the example reflect physical quantities, but this is not physical interaction in the sense of physical substances with flow rates and potentials ...
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A.5.2 System being modeled: The total humidifier system has two main components: the humidified room and the humidifier, see Figure 64.
The humidifier uses information about the room’s humidity level to determine how much vapor to input to the room. The humidifier includes a water tank, a heater controller, and a vapor generation plant.
A.5.3 Internal structure: Figure 65 through Figure 71 show the internal structure of the total humidifier system and its components through seven nested internal block diagrams.
The internal structure of the block HumidifierSystem shown in Figure 65 uses the blocks HumidifiedRoom and Humidifier. These two blocks have their own internal structures.
The internal structure of HumidifiedRoom depicted in Figure 66 uses a block RelativeHumidity, which has an internal structure depicted in Figure 67.
The internal structure of Humidifier in Figure 68 uses a block VaporGenerationPlant, which has an internal structure shown in Figure 69.
The internal structure of VaporGenerationPlant uses blocks Heating and Evaporation, which have internal structures depicted in Figure 70 and Figure 71, respectively.
The blocks used in these diagrams are introduced in Subannex A.5.4.
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Some signals in the example reflect physical quantities, but this is not physical interaction in the sense of physical substances with flow rates and potentials ...
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