SensirionSPS30

Description

The SensirionSPS30 object provides an interface for the Sensirion SPS30 particle sensor and allows reading measured masss concentrations, number concentrations and the typical particle size. Additionally operations such as cleaning the fan can configured to be performed automatically or triggered manually.

› Inherits:

SensirionHDLC

Overview

Properties

Methods

Signals

Enumerations

Properties

autoCleaningInterval

This property holds the interval [ms] of the periodic fan-cleaning. When the module is in measurement mode an automatic fan-cleaning procedure will be triggered periodically following a defined cleaning interval. This will accelerate the fan to maximum speed for 10 seconds in order to blow out the dust accumulated inside the fan. While cleaning measurement values are not updated. Set to 0 to disable. Default interval is 604800000 milliseconds (1 week). If the sensor is switched off, the time counter is reset to 0. Make sure to trigger a cleaning cycle at least every week if the sensor is switched off and on periodically (e.g., once per day).

› Type:

SignedInteger

› Default:

604800000

› Signal:

autoCleaningIntervalChanged()

› Attributes:

Writable

enabled

This property holds whether the sensor is enabled. After power up, the module is in Idle-Mode. Before any measurement values can be read, the sensor needs to be enabled. If enabling was successful the fan starts running.

› Type:

Boolean

› Default:

true

› Signal:

enabledChanged()

› Attributes:

Writable

massPM10

This property holds the mass concentration PM10 in μg/m³.

› Type:

Float

› Default:

0

› Signal:

massPM10Changed()

› Attributes:

Readonly

massPM1_0

This property holds the mass concentration PM1.0 in μg/m³.

› Type:

Float

› Default:

0

› Signal:

massPM1_0Changed()

› Attributes:

Readonly

massPM2_5

This property holds the mass concentration PM2.5 in μg/m³.

› Type:

Float

› Default:

0

› Signal:

massPM2_5Changed()

› Attributes:

Readonly

massPM4_0

This property holds the mass concentration PM4.0 in μg/m³.

› Type:

Float

› Default:

0

› Signal:

massPM4_0Changed()

› Attributes:

Readonly

numberPM0_5

This property holds the number concentration PM0.5 in #/cm³.

› Type:

Float

› Default:

0

› Signal:

numberPM0_5Changed()

› Attributes:

Readonly

numberPM10

This property holds the number concentration PM10 in #/cm³.

› Type:

Float

› Default:

0

› Signal:

numberPM10Changed()

› Attributes:

Readonly

numberPM1_0

This property holds the number concentration PM1.0 in #/cm³.

› Type:

Float

› Default:

0

› Signal:

numberPM1_0Changed()

› Attributes:

Readonly

numberPM2_5

This property holds the number concentration PM2.5 in #/cm³.

› Type:

Float

› Default:

0

› Signal:

numberPM2_5Changed()

› Attributes:

Readonly

numberPM4_0

This property holds the number concentration PM4.0 in #/cm³.

› Type:

Float

› Default:

0

› Signal:

numberPM4_0Changed()

› Attributes:

Readonly

timestamp

This property holds a timestamp in milliseconds corresponding to the time when the latest measurements have been received.

This property was introduced in InCore 2.6.

› Type:

SignedBigInteger

› Signal:

timestampChanged()

› Attributes:

Writable

typicalSize

This property holds the typical particle size in μm.

› Type:

Float

› Default:

1

› Signal:

typicalSizeChanged()

› Attributes:

Readonly

values

This property holds all available values provided for convenience in the following order:

› Type:

List

› Signal:

valuesChanged()

› Attributes:

Readonly, Requires Polling

Methods

pollValues()

This method polls the values property. It is called automatically when using a Polling property modifier on this property and usually does not have to be called manually.

startFanCleaning()

This method starts the fan-cleaning manually. For more details, see autoCleaningInterval

Example

import InCore.Foundation 2.5
import InCore.IO 2.5

Application {

    SensirionSPS30 {
        serialPort: SerialPort { portName: "ttyUSB0" }
        autoCleaningInterval: 10 * 60 * 1000
        onErrorChanged: console.log( errorString )
        Polling on values { interval: 2000 }
        onValuesChanged: console.log( values )
    }
}