Use state diagrams to model object lifecycles, design control systems, document state-dependent behavior, and illustrate workflow states.
Explore 3 real-world state diagram examples with detailed explanations and PlantUML source code.
A state diagram modeling the behavior of a smart home thermostat system with states for idle, heating, cooling, fan only, and error conditions. Shows transitions based on temperature changes, manual overrides, and device failures.
A state diagram modeling a traffic light control system with the standard Green → Yellow → Red cycle, including a maintenance state for sensor errors and system malfunctions. Demonstrates automated traffic flow control with safety mechanisms.
A state diagram modeling an elevator control system with states for idle, moving up/down, door operations, and maintenance mode. Includes safety mechanisms for emergency stops, overload detection, and proper door sequencing.
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