Class SwitchingAnemometer

Driver for a "switching" anemometer (wind speed gauge) that has an internal switch that is triggered during every revolution.

Assembly: SwitchingAnemometer.dll

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public class SwitchingAnemometer : PollingSensorBase<Speed>, IObservable<IChangeResult<Speed>>, IAnemometer, ISamplingSensor<Speed>, ISensor<Speed>, ISensor, ISamplingSensor, IDisposable

Inheritance: System.Object -> Meadow.Foundation.ObservableBase<UNIT> -> Meadow.Foundation.SamplingSensorBase<UNIT> -> Meadow.Foundation.PollingSensorBase<UNIT>

Implements:
System.IObservable<Meadow.IChangeResult<Meadow.Units.Speed>>, Meadow.Peripherals.Sensors.Weather.IAnemometer, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Speed>, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Speed>, Meadow.Peripherals.Sensors.ISensor, Meadow.Peripherals.Sensors.ISamplingSensor, System.IDisposable

Properties

WindSpeed

The current wind speed

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public Speed? WindSpeed { get; protected set; }

NoWindTimeout

Time to wait if no events come in to register a zero speed wind

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public TimeSpan NoWindTimeout { get; set; }

OneTimeReadDuration

Time to capture samples for a one time Read if IsSampling is false

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public TimeSpan OneTimeReadDuration { get; set; }

SampleCount

Number of samples to take for a reading

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public int SampleCount { get; set; }

KmhPerSwitchPerSecond

Calibration for how fast the wind speed is when the switch is hit once per second. Used to calculate the wind speed based on the time duration between switch events. Default is 2.4kmh.

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public float KmhPerSwitchPerSecond { get; set; }

IsDisposed

Is the object disposed

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public bool IsDisposed { get; }

Methods

StartUpdating(TimeSpan?)

Starts continuously sampling the sensor

This method also starts raising Updated events and IObservable subscribers getting notified. Use the standbyDuration parameter to specify how often events and notifications are raised/sent.

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public override void StartUpdating(TimeSpan? updateInterval = null)

Parameters

Type	Name
System.Nullable<System.TimeSpan>	updateInterval

StopUpdating()

Stops the driver from raising wind speed events

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public override void StopUpdating()

ReadSensor()

Reads data from the sensor

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protected override Task<Speed> ReadSensor()

Returns

System.Threading.Tasks.Task<Meadow.Units.Speed>: The latest sensor reading### SwitchIntervalToKmh(TimeSpan) A wind speed of 2.4km/h causes the switch to close once per second

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protected float SwitchIntervalToKmh(TimeSpan interval)

Returns

System.Single

Parameters

Type	Name	Description
System.TimeSpan	interval	The interval between signals

Dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

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public void Dispose()

Dispose(bool)

Dispose of the object

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protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
System.Boolean	disposing	Is disposing

Implements

• System.IObservable<Meadow.IChangeResult<Meadow.Units.Speed>>
• Meadow.Peripherals.Sensors.Weather.IAnemometer
• Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Speed>
• Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Speed>
• Meadow.Peripherals.Sensors.ISensor
• Meadow.Peripherals.Sensors.ISamplingSensor
• System.IDisposable