# smart-oil-heating-control-system

## Software
### Design

```mermaid
classDiagram
Inputs <|-- Control
Outputs <|-- Control
Sntp <|-- Control
Inputs <|-- Safety
Outputs <|--|> Safety

Inputs <|-- Metrics
Outputs <|-- Metrics
Control <|-- Metrics
Safety <|-- Metrics
Sntp <|-- Metrics

    class Inputs{
        +initInputs()
        -taskInput()
        +getChamberTemperature()
        +getOutdoorTemperature()
        +getInletFlowTemperature()
        +getReturnFlowTemperature()
        +getBurnerError()
    }

    class Outputs{
        +initOutputs()
        +getCirculationPumpState()
        +setCirculationPumpState()
        +getBurnerState()
        +setBurnerState()
        +getSafetyControlState()
        +setSafetyControlState()
    }

    class Control{
        +taskControl()
        -timetable
    }

    class Safety{
        +initSafety()
        -taskSafety()
        -setSafeState()
        -checkSensorSanity()
        +getSensorSanityStates()
        +getSafetyState()
    }


    class Wifi{
        +initWifi()
    }

    class Sntp{
        +initSntp()
        +getSntpState()
    }

    class Metrics{
        +initMetrics()
        -taskMetrics()
        -metrics
        +event_handler()
        +connect_wifi()
        +setMetrics()
    }
```

### Hardware

| Function                              | ESP32 | PLC ES32C14               |
|---------------------------------------|-------|---------------------------|
| Output CirculationPump                | IO27  | Relay 1 NO1               |
| Output Burner Fire Signal             | IO14  | Relay 2 NC2               |
| Output Safety Contact (powers Burner) | IO12  | Relay 3 NC2               |
| Input Burner Fault                    | IO19  | Digital Input IN1         |
| Input Temperature DS10B20             | IO04  | 1-Wire                    |