3.2 OPC UA for Global Positioning terms
3.2.1 Global Position
Defines the spatial data representing a point in a global coordinate system, including longitude, latitude, elevation, and accuracy.
Note: This term comprises all parameters required to uniquely locate an object globally.
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EXAMPLE 1: | A GPS sensor reporting a complete set of coordinates. EXAMPLE 2: An asset tracking system providing full spatial data. |
3.2.2 Global Location
| Refers to a spatial representation that extends a global position by including orientation or directional information. Note: Global Location is used when both position and heading are necessary. EXAMPLE 1: | A mobile robot reporting its position along with its heading. EXAMPLE 2: A navigation system integrating position data with directional readings. |
3.2.3 Zone
| Represents a defined area wherein positioning data is collected and can be transformed into global coordinates, or vice versa. EXAMPLE 1: | A manufacturing floor segmented into zones for localized tracking. EXAMPLE 2: An area designated for converting local sensor data into global coordinates. |
3.2.4 SourceId
| Describes the unique identifier that indicates the origin of the positioning data, such as the Zone of an RTLS or self-localizing device that computed the position. Note: The SourceId may represent either a Zone identifier or the unique identifier of a device (e.g. a GPS tracker). EXAMPLE 1: | An identifier for a GPS device generating global position data. EXAMPLE 2: A reference to the Zone of an RTLS system providing the location. |
3.2.5 Local Coordinate System
A local cartesian coordinate system defined within a limited, specific area, such as a manufacturing floor or a building.
Note: Unlike global coordinate systems that use standardized projections (e.g., EPSG codes) to reference positions on Earth, a local system uses a relative, often arbitrarily defined, origin and axes for the specific environment.
| EXAMPLE 1: | A mobile robot using a local coordinate system within the production area to navigate and perform tasks. |