Term |
Description |
|---|---|
Channel |
Abstraction of a sensor. Data from one physical sensor may be mapped to several channels. |
Channel condition |
A value-operator pair targeting a single value inside a data item, indicated by an index. A condition is met when the channel data value comparison with the condition value using condition operator is true. The conditions are gathered in condition sets. There are two condition types: single limit conditions and range conditions. Range conditions are actually made up from two separate conditions representing the lower and upper limits of the range. |
Channel item property |
A single property inside a channel data item. |
Channel property |
A single channel property. |
Data item |
A discrete data package that contains sensor data or an event parsed from sensor data and possibly some related values, such as a timestamp. Each channel provides a single type of data item only. |
Property |
Properties are configuration values of sensor channels. Changing a property affects all clients listening to the affected channel(s). |
Sensor |
Physical sensor. A single sensor can provide multiple channels, such as raw data channel and event channels, or multiple sensor readings can be incorporated into a single channel. |
Channel data types
Continuous data channel |
A continuous data channel outputs data at regular intervals. Examples: Accelerometer XYZ, Rotation, Magnetometer XYZ. |
Event channel |
A channel that signals a client when an event has happened. Examples: Single Tap, Double Tap. |
State channel |
A channel that signals a client when its state has changed. Examples: Orientation, Proximity Monitor. You can also query the current state of the channel. |