IlluminanceSubscriber QML Type

Subscribes to 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...

• List of all members, including inherited members

Properties

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

Signals

• messageReceived(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.

IlluminanceSubscriber receives illuminance values from a ROS 2 topic. Set the topic and node properties, then connect to the messageReceived() signal.

See also IlluminancePublisher and illuminance.

Property Documentation

header : header

The header field of the last received message. Updated whenever a new message arrives. headerChanged is emitted on every update.

illuminance : double

The illuminance field of the last received message. Updated whenever a new message arrives. illuminanceChanged is emitted on every update.

message : illuminance

The last message received on topic. Updated whenever a new message arrives.

variance : double

The variance field of the last received message. Updated whenever a new message arrives. varianceChanged is emitted on every update.

Signal Documentation

messageReceived(illuminance msg)

Emitted when a new illuminance arrives on topic. msg contains the received value.