private static async Task CreateLoggingMessage(ConveyorBeltSimulator conveyor, double vibration)
{
// Create the logging JSON message.
var loggingDataPoint = new
{
vibration = Math.Round(vibration, 2),
packages = conveyor.PackageCount,
speed = conveyor.BeltSpeed.ToString(),
temp = Math.Round(conveyor.Temperature, 2),
};
var loggingMessageString = JsonConvert.SerializeObject(loggingDataPoint);
var loggingMessage = new Message(Encoding.ASCII.GetBytes(loggingMessageString));
// Add a custom application property to the message. This is used to route the message.
loggingMessage.Properties.Add("sensorID", "VSLog");
// Send an alert if the belt has been stopped for more than five seconds.
loggingMessage.Properties.Add("beltAlert", (conveyor.BeltStoppedSeconds > 5) ? "true" : "false");
Console.WriteLine($"Log data: {loggingMessageString}");
// Send the logging message.
await deviceClient.SendEventAsync(loggingMessage);
ConsoleHelper.WriteGreenMessage("Log data sent\n");
}
// This method creates a JSON message string and uses the Message
// class to send the message, along with additional properties. Notice
// the sensorID property - this will be used to route the VSTel values
// appropriately at the IoT Hub. Also notice the beltAlert property -
// this is set to true if the conveyor belt haas stopped for more than 5
// seconds.
private static async Task CreateTelemetryMessage(
ConveyorBeltSimulator conveyor,
double vibration)
{
var telemetryDataPoint = new
{
vibration = vibration,
};
var telemetryMessageString =
JsonConvert.SerializeObject(telemetryDataPoint);
var telemetryMessage =
new Message(Encoding.ASCII.GetBytes(telemetryMessageString));
// Add a custom application property to the message. This is used to route the message.
telemetryMessage.Properties.Add("sensorID", "VSTel");
// Send an alert if the belt has been stopped for more than five seconds.
telemetryMessage.Properties
.Add("beltAlert", (conveyor.BeltStoppedSeconds > 5) ? "true" : "false");
Console.WriteLine($"Telemetry data: {telemetryMessageString}");
// Send the telemetry message.
await deviceClient.SendEventAsync(telemetryMessage);
ConsoleHelper.WriteGreenMessage($"Telemetry sent {DateTime.Now.ToShortTimeString()}");
}
// Async method to send simulated telemetry.
private static async void SendDeviceToCloudMessagesAsync()
{
var conveyor = new ConveyorBeltSimulator(intervalInMilliseconds);
// Simulate the vibration telemetry of a conveyor belt.
while (true)
{
var vibration = conveyor.ReadVibration();
await CreateTelemetryMessage(conveyor, vibration);
await Task.Delay(intervalInMilliseconds);
}
}
private static async Task CreateTelemetryMessage(ConveyorBeltSimulator conveyor, double vibration)
{
var telemetryDataPointVibration = new
{
conveyor = conveyor.id,
vibration = vibration
};
var telemetryDataPointTemperature = new
{
conveyor = conveyor.id,
temp = conveyor.Temperature
};
var telemetryDataPointBeltSpeed = new
{
conveyor = conveyor.id,
speed = conveyor.BeltSpeed
};
var telemetryDataPointPackages = new
{
conveyor = conveyor.id,
packages = conveyor.PackageCount
};
var telemetryMessageVibrationString = JsonConvert.SerializeObject(telemetryDataPointVibration);
var telemetryMessageVibration = new Message(Encoding.ASCII.GetBytes(telemetryMessageVibrationString));
var telemetryMessageTemperatureString = JsonConvert.SerializeObject(telemetryDataPointTemperature);
var telemetryMessageTemperature = new Message(Encoding.ASCII.GetBytes(telemetryMessageTemperatureString));
var telemetryMessageBeltSpeedString = JsonConvert.SerializeObject(telemetryDataPointBeltSpeed);
var telemetryMessageBeltSpeed = new Message(Encoding.ASCII.GetBytes(telemetryMessageBeltSpeedString));
var telemetryMessagePackagesString = JsonConvert.SerializeObject(telemetryDataPointPackages);
var telemetryMessagePackages = new Message(Encoding.ASCII.GetBytes(telemetryMessagePackagesString));
// Send the telemetry message.
await deviceClientVibrationSensor.SendEventAsync(telemetryMessageVibration);
await deviceClientTemperatureSensor.SendEventAsync(telemetryMessageTemperature);
await deviceClientBeltSpeedSensor.SendEventAsync(telemetryMessageBeltSpeed);
await deviceClientPackagesSensor.SendEventAsync(telemetryMessagePackages);
CheckAlerts(conveyor, vibration);
ConsoleHelper.WriteGreenMessage($"Telemetry sent {DateTime.Now.ToShortTimeString()}");
}
// Async method to send simulated telemetry.
private static async void SendDeviceToCloudMessagesAsync()
{
// The ConveyorBeltSimulator class is used to create a
// ConveyorBeltSimulator instance named `conveyor`. The `conveyor`
// object is first used to capture a vibration reading which is
// placed into a local `vibration` variable, and is then passed to
// the two create message methods along with the `vibration` value
// that was captured at the start of the interval.
var conveyor = new ConveyorBeltSimulator(intervalInMilliseconds);
// Simulate the vibration telemetry of a conveyor belt.
while (true)
{
var vibration = conveyor.ReadVibration();
await CreateTelemetryMessage(conveyor, vibration);
await CreateLoggingMessage(conveyor, vibration);
await Task.Delay(intervalInMilliseconds);
}
}
private static async Task CheckAlerts(ConveyorBeltSimulator conveyor, double vibration)
{
if (conveyor.Temperature > 80)
{
var telemetryDataPoint = new
{
conveyor = conveyor.id,
TemperatureAlert = true
};
var telemetryMessageString = JsonConvert.SerializeObject(telemetryDataPoint);
var telemetryMessage = new Message(Encoding.ASCII.GetBytes(telemetryMessageString));
await deviceClientTemperatureAlertSensor.SendEventAsync(telemetryMessage);
ConsoleHelper.WriteGreenMessage($"Alert sent {DateTime.Now.ToShortTimeString()}");
}
else
{
var telemetryDataPoint = new
{
conveyor = conveyor.id,
TemperatureAlert = false
};
var telemetryMessageString = JsonConvert.SerializeObject(telemetryDataPoint);
var telemetryMessage = new Message(Encoding.ASCII.GetBytes(telemetryMessageString));
await deviceClientTemperatureAlertSensor.SendEventAsync(telemetryMessage);
ConsoleHelper.WriteGreenMessage($"Alert sent {DateTime.Now.ToShortTimeString()}");
}
if (vibration > 12)
{
var telemetryDataPoint = new
{
conveyor = conveyor.id,
vibrationAlert = true
};
var telemetryMessageString = JsonConvert.SerializeObject(telemetryDataPoint);
var telemetryMessage = new Message(Encoding.ASCII.GetBytes(telemetryMessageString));
await deviceClientVibrationAlertSensor.SendEventAsync(telemetryMessage);
ConsoleHelper.WriteGreenMessage($"Alert sent {DateTime.Now.ToShortTimeString()}");
}
else
{
{
var telemetryDataPoint = new
{
conveyor = conveyor.id,
vibrationAlert = false
};
var telemetryMessageString = JsonConvert.SerializeObject(telemetryDataPoint);
var telemetryMessage = new Message(Encoding.ASCII.GetBytes(telemetryMessageString));
await deviceClientVibrationAlertSensor.SendEventAsync(telemetryMessage);
ConsoleHelper.WriteGreenMessage($"Alert sent {DateTime.Now.ToShortTimeString()}");
}
}
}
