🌾 Agriculture · State Machine
Automated Irrigation Controller
The states of an automated drip irrigation controller: idle, scheduled watering, moisture-based watering, rain delay and fault handling.
Drawing diagram…
What this diagram shows
- Watering starts on schedule or when soil is too dry
- Rain forecast delays watering to save water
- Low pressure or no flow triggers a fault alert
Prompt used
State machine for an irrigation controller: Idle, Checking conditions at scheduled time or when soil moisture drops below 25%, Rain Delay if rain is forecast within 12 hours, Opening Valve, Watering until the target moisture or time limit, Closing Valve and back to Idle. No flow or low pressure while watering goes to Fault, alerting the farmer; Manual Override allows the farmer to start or stop from the app.
Mermaid code
stateDiagram-v2 [*] --> Idle Idle --> CheckingConditions: Schedule time or moisture below 25% CheckingConditions --> RainDelay: Rain forecast within 12h RainDelay --> Idle: Delay over CheckingConditions --> OpeningValve: OK to water OpeningValve --> Watering Watering --> ClosingValve: Target moisture reached or 45 min Watering --> Fault: No flow or low pressure Fault --> Idle: Farmer resets ClosingValve --> Idle Idle --> ManualOverride: Farmer starts from app ManualOverride --> Watering
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