{

"$schema": "https://json-schema.org/draft/2020-12/schema",

"title": "Sensor Reading",

"description": "An IoT telemetry observation modelled after the W3C SOSA ontology, with the measured quantity in a prefixed SI unit, the observed property as a dereferenceable IRI, and the sensor location as GeoJSON from the standard library",

"examples": [

{

"observedProperty": "http://qudt.org/vocab/quantitykind/Voltage",

"result": 743.2,

"resultTime": "2026-08-03T14:30:00Z",

"location": {

"type": "Point",

"coordinates": [ -58.3816, -34.6037 ]

}

}

],

"x-jsonld-type": "http://www.w3.org/ns/sosa/Observation",

"x-license": "https://github.com/sourcemeta/std/blob/main/LICENSE",

"x-links": [ "https://www.w3.org/TR/vocab-ssn/" ],

"type": "object",

"required": [ "observedProperty", "result", "resultTime" ],

"properties": {

"observedProperty": {

"x-jsonld-id": "http://www.w3.org/ns/sosa/observedProperty",

"$ref": "../schemas/ietf/uri/3986/uri/v1.json"

},

"result": {

"x-jsonld-id": "http://www.w3.org/ns/sosa/hasResult",

"$ref": "../schemas/bipm/si/2019/derived/prefixed/millivolt/v1.json"

},

"resultTime": {

"x-jsonld-id": "http://www.w3.org/ns/sosa/resultTime",

"$ref": "../schemas/iso/datetime/2019/datetime/calendar-utc-extended/v1.json"

},

"location": {

"x-jsonld-id": "https://schema.org/location",

"$ref": "../schemas/ietf/geojson/7946/point/v1.json"

}

},

"additionalProperties": false

}