IlluminancePublisher QML Type

Publishes sensor_msgs::msg::Illuminance messages — Single photometric illuminance measurement. Light should be assumed to be measured along the sensor's x-axis (the area of detection is the y-z plane). More...

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Properties

• header : header
• illuminance : double
• variance : double

Methods

• void publish(illuminance msg)

Detailed Description

The illuminance should have a 0 or positive value and be received with the sensor's +X axis pointing toward the light source.

Photometric illuminance is the measure of the human eye's sensitivity of the intensity of light encountering or passing through a surface.

All other Photometric and Radiometric measurements should not use this message. This message cannot represent:

• Luminous intensity (candela/light source output)
• Luminance (nits/light output per area)
• Irradiance (watt/area), etc.

IlluminancePublisher publishes illuminance values to a ROS 2 topic. Set the topic and node properties, then call publish() to send messages.

See also IlluminanceSubscriber and illuminance.

Property Documentation

header : header

The header field value included in the next publish. Setting this property emits headerChanged and, when autoPublish is true, requests a publish at the end of the current event-loop iteration.

illuminance : double

The illuminance field value included in the next publish. Setting this property emits illuminanceChanged and, when autoPublish is true, requests a publish at the end of the current event-loop iteration.

variance : double

The variance field value included in the next publish. Setting this property emits varianceChanged and, when autoPublish is true, requests a publish at the end of the current event-loop iteration.

Method Documentation

void publish(illuminance msg)

Publishes illuminance msg to the ROS 2 topic set by the topic property. Does nothing if the publisher is not connected.