meta-facebook/meta-bletchley/recipes-phosphor/sensors/phosphor-virtual-sensor/virtual_sensor_config.json

[
    {
        "Desc":
        {
            "Name": "Virtual_CFM_Sensor",
            "SensorType": "airflow"
        },
        "Params":
        {
            "DbusParam":
            [
                {
                    "ParamName": "fan0",
                    "Desc":
                    {
                        "Name": "FAN0_TACH_IL",
                        "SensorType": "fan_tach"
                    }
                },
                {
                    "ParamName": "fan1",
                    "Desc":
                    {
                        "Name": "FAN1_TACH_IL",
                        "SensorType": "fan_tach"
                    }
                },
                {
                    "ParamName": "fan2",
                    "Desc":
                    {
                        "Name": "FAN2_TACH_IL",
                        "SensorType": "fan_tach"
                    }
                },
                {
                    "ParamName": "fan3",
                    "Desc":
                    {
                        "Name": "FAN3_TACH_IL",
                        "SensorType": "fan_tach"
                    }
                }
            ]
        },
        "Expression": "max(0, (avg(fan0, fan1, fan2, fan3) * 0.0478) - 11.467)"
    },
    {
        "Desc":
        {
            "Name": "Virtual_Inlet_Temp",
            "SensorType": "temperature"
        },
        "Threshold":{
            "CriticalHigh": 40,
            "CriticalLow": 0
        },
        "Params":
        {
            "DbusParam":
            [
                {
                    "ParamName": "inlet_temp",
                    "Desc":
                    {
                        "Name": "FRONT_PANEL_TEMP",
                        "SensorType": "temperature"
                    }
                },
                {
                    "ParamName": "fan0",
                    "Desc":
                    {
                        "Name": "FAN0_TACH_IL",
                        "SensorType": "fan_tach"
                    }
                },
                {
                    "ParamName": "fan1",
                    "Desc":
                    {
                        "Name": "FAN1_TACH_IL",
                        "SensorType": "fan_tach"
                    }
                },
                {
                    "ParamName": "fan2",
                    "Desc":
                    {
                        "Name": "FAN2_TACH_IL",
                        "SensorType": "fan_tach"
                    }
                },
                {
                    "ParamName": "fan3",
                    "Desc":
                    {
                        "Name": "FAN3_TACH_IL",
                        "SensorType": "fan_tach"
                    }
                }
            ]
        },
        "Expression": "if(avg(fan0, fan1, fan2, fan3) > 0, inlet_temp - (((avg(fan0, fan1, fan2, fan3)^2) * (5e-8)) - (avg(fan0, fan1, fan2, fan3) * (6e-4)) + 1.5841), inlet_temp)"
    }
]