SAREF extension for environment

A point, typically described using a coordinate system relative to Earth, such as WGS84. Uniquely identified by lat/long/alt. i.e. spaciallyIntersects(P1, P2) :- lat(P1, LAT), long(P1, LONG), alt(P1, ALT), at(P2, LAT), long(P2, LONG), alt(P2, ALT). sameThing(P1, P2) :- type(P1, Point), type(P2, Point), spaciallyIntersects(P1, P2).

Anything with spatial extent, i.e. size, shape, or position. e.g. people, places, bowling balls, as well as abstract areas like cubes.

A temporal unit of measure, which provides a scale factor for a time quantity.

A tangible object designed to accomplish a particular task in households, common public buildings or offices. In order to accomplish this task, the device performs one or more functions. For example, a washing machine is designed to wash (task) and to accomplish this task it performs the start and stop function.

Represents the measured value made over a property. It is also linked to the unit of measure in which the value is expressed and the timestamp of the measurement.

An aspect of an entity that can be observable by a sensor.

A device that detects and responds to events or changes in the physical environment such as light, motion, or temperature changes. A device that has category saref:Sensor and performs a saref:SensingFunction.

A service is a representation of a function to a network that makes the function discoverable, registerable, remotely controllable by other devices in the network. A service can represent one or more functions. A Service is offered by a device that wants (a certain set of) its function(s) to be discoverable, registerable, remotely controllable by other devices in the network. A Service must specify the device that is offering the service, the function(s) to be represented, and the (input and output) parameters necessary to operate the service.

The unit of measure is a standard for measurement of a quantity, such as a Property. For example, Power is a property and Watt is a unit of power that represents a definite predetermined power: when we say 10 Watt, we actually mean 10 times the definite predetermined power called "watt". Our definition is based on the definition of unit of measure in the Ontology of units of Measure (OM). We propose here a list of some units of measure that are relevant for the purpose of the Smart Appliances ontology, but this list can be extended.

Device that can act over at least one property.

Color of the emitted light. It might be indicated by named colors or using other type of color values like hexadecimal for RGB, color temperature, etc.

An interface defines which primitive operations and services the lower layer makes available to the upper one, when referring to network layers. (Definition adapted from "Tanenbaum, A. S. (2003). Computer networks, 4-th edition. ed: Prentice Hall.")

A protocol is an agreement between the communicating parties on how communication is to proceed. (Definition taken from "Tanenbaum, A. S. (2003). Computer networks, 4-th edition. ed: Prentice Hall.")

The four cardinal directions or cardinal points are the directions of north, east, south, and west, commonly denoted by their initials: N, E, S, W. East and west are at right angles to north and south, with east being in the clockwise direction of rotation from north and west being directly opposite east. Intermediate points between the four cardinal directions form the points of the compass. (definition taken from https://en.wikipedia.org/wiki/Cardinal_direction)

A thing made or adapted for a particular purpose, especially a piece of mechanical or electronic equipment. For example ‘a measuring device’ (definition taken from https://en.oxforddictionaries.com/definition/device). In this ontology it refers to the devices for environmental purposes.

A digital representation encapsulates a physical object accessible via Web services

Represents the measured value made over a frequency property. It is also linked to the frequency unit of measure in which the value is expressed and the timestamp of the measurement.

Unit of measure for the quantity frequency.

Represents the shape of the light emission. It might be instantiated by individuals like "spherical", "cylindrical", etc. even though it is open to more comples representation of geometries using other vocabularies.

Represents the measured value made over a height property. It is also linked to the height unit of measure in which the value is expressed and the timestamp of the measurement.

A tall pole with a light at the top.

Unit of measure for the quantity lenght.

A light source, which may be a lantern, a street light, a floodlight, a signal lamp or any other device whose primary purpose is the generation of light. (Definition taken from http://wiki.openstreetmap.org/wiki/Proposed_features/Key:light_source#Description)

An spatial point from where a light is projected. It might belong to a lamppost.

An aspect of light that can be observable by a sensor.

Represents the measured value over a period property. It is also linked to the period unit of measure in which the value is expressed and the timestamp of the measurement.

A photometer, generally, is an instrument that measures light intensity or optical properties of solutions or surfaces.

Any Object that has a proper space region. (Definition extracted from DUL ontology)

A group of related hardware units or programs or both, especially when dedicated to a single application. (Definition taken from https://en.oxforddictionaries.com/definition/system)

The Telescope Encoder and Sky Sensor (TESS) is a Sky Brightness and Cloud detector developed as a device for a remote observatory. A TESS can observe the light magnitude and other properties as ambient temperature and sky temperature.