Streetlight

This repository is now archived and subsequent works will be carried out the in Smart data models repositories. The latest version of this Data Model can be found at https://github.com/smart-data-models/dataModel.Streetlighting

An entity of type Streetlight represents a urban streetlight. Actually, there will be an entity of type Streetlight per lamp. Thus, if a particular pole holds more than one lantern there will be as many streetlight entites as installed lamps. As a result there might be more than one streetlight entity per location. A Streetlight entity does not contain any attribute corresponding to structural characteristics. Such data is captured by entities of type StreetlightModel.

Data Model

The data model is defined as shown below:

• id : Entity's unique identifier.

• type : It must be equal to Streetlight.

• source : A sequence of characters giving the source of the entity data.

  • Attribute type: Property. Text or URL
  • Optional

• dataProvider : Specifies the URL to information about the provider of this information

  • Attribute type: Property. URL
  • Optional

• location : Streetlight's location represented by a GeoJSON Point.

  • Attribute type: GeoProperty. geo:json.
  • Normative References: https://tools.ietf.org/html/draft-ietf-geojson-03
  • Mandatory if address is not present.

• address : Civic address where the streetlight is located.

  • Attribute type: Property. Address
  • Normative References: https://schema.org/address
  • Mandatory if location is not present.

• areaServed : Higher level area to which this streetlight belongs to. It can be used to group streetlights per responsible, district, neighbourhood, etc.

  • Attribute type: Property. Text
  • Normative References: https://schema.org/areaServed
  • Optional

• circuit : The circuit to which this streetlight connects to and gets power from. Typically it will contain an identifier that will allow to obtain more information about such circuit.

  • Attribute type: Property. Text
  • Optional

• refStreetlightModel : Streetlight's model.

  • Attribute type : Reference to a StreetlightModel entity.
  • Optional

• refStreetlightControlCabinet : If this streetlight is individually controlled, reference to the control cabinet in charge of.

  • Attribute type : Reference to a StreetlightControlCabinet entity.
  • Optional

• status : The overall status of this street light.

  • Attribute type: Relationship. Text
  • Allowed values: one Of (ok, defectiveLamp, columnIssue, brokenLantern)
    • Or any other value meaningful to the application and not covered by the values above.
  • Attribute metadata:
    • timestamp: Timestamp when the last update of the attribute happened.
      • Type: DateTime
  • Mandatory

• powerState : Streetlight's power state.

  • Attribute type: Property. Text
  • Attribute metadata:
    • timestamp : Timestamp when the last update of the attribute happened.
      • Type: DateTime
  • Allowed values: one Of (on, off, low, bootingUp)
  • Optional

• refDevice : Reference to the device(s) used to monitor this streetligth.

  • Attribute type: Relationship. List of Reference to entity(ies) of type Device
  • Optional

• refStreetlightGroup : Streetlight's group, if this streetlight belongs to any group.

  • Attribute type : Reference to a StreetlightGroup entity.
  • Optional

• dateLastLampChange : Timestamp of the last change of lamp made.

  • Attribute type: Property. DateTime
  • Attribute metadata:
    • timestamp : Timestamp when the last update of the attribute happened.
      • Type: DateTime
  • Optional

• dateLastSwitchingOn : Timestamp of the last switching on.

  • Attribute type: Property. DateTime
  • Attribute metadata:
    • timestamp : Timestamp when the last update of the attribute happened.
      • Type: DateTime
  • Optional

• dateLastSwitchingOff : Timestamp of the last switching off.

  • Attribute type: Property. DateTime
  • Attribute metadata:
    • timestamp : Timestamp when the last update of the attribute happened.
      • Type: DateTime
  • Optional

• controllingMethod : The method used to control this streetlight.

  • Attribute type: Relationship. Text
  • Allowed values: one Of (group, individual)
  • Optional

• dateModified : Timestamp of the last update made to this entity

  • Attribute type: Property. DateTime
  • Read-Only. Automatically generated.

• dateServiceStarted : Date at which the streetlight started giving service.

  • Attribute type: Property. Date
  • Optional

• image : A URL containing a photo of the streetlight.

  • Normative References: https://schema.org/image
  • Optional

• description : Description about the streetlight.

  • Attribute type: Property. Text
  • Normative References: https://uri.etsi.org/ngsi-ld/description equivalent to description
  • Optional

• annotations : A field reserved for annotations (incidences, remarks, etc.).

  • Attribute type: Property. List of Text
  • Optional

• locationCategory : Category of the location where the streetlight is placed.

  • Attribute type:
  • Allowed values: oneOf (façade, sidewalk, pedestrianPath, road, playground, park, garden, bridge, tunnel, parking, centralIsland)
    • Or any other value with semantics not covered by the above list.

• lanternHeight : Lantern's height. In columns with many arms this can vary between streetlights. Another variation source of this property are wall-mounted streetlights.

  • Attribute type: Property. Number
  • Default unit: Meters.
  • Optional

• illuminanceLevel : Relative illuminance level setting.

  • Attribute type: Property. Number
  • Allowed values: A number between 0 and 1.
  • Attribute metadata:
    • timestamp: Timestamp when the last update of the attribute happened.
      • Type: DateTime
  • Optional

Note: JSON Schemas are intended to capture the data type and associated constraints of the different Attributes, regardless their final representation format in NGSI(v2, LD).

Examples

Normalized Example

Normalized NGSI response

{
    "id": "streetlight:guadalajara:4567",
    "type": "Streetlight",
    "status": {
        "value": "ok"
    },
    "powerState": {
        "value": "off"
    },
    "circuit": {
        "value": "C-456-A467"
    },
    "locationCategory": {
        "value": "centralIsland"
    },
    "location": {
        "type": "geo:json",
        "value": {
            "type": "Point",
            "coordinates": [-3.164485591715449, 40.62785133667262]
        }
    },
    "areaServed": {
        "value": "Roundabouts city entrance"
    },
    "controllingMethod": {
        "value": "individual"
    },
    "refStreetlightGroup": {
        "type": "Relationship",
        "value": "streetlightgroup:G345"
    },
    "dateLastLampChange": {
        "type": "DateTime",
        "value": "2016-07-08T08:02:21.753Z"
    },
    "lanternHeight": {
        "value": 10
    },
    "refStreetlightModel": {
        "type": "Relationship",
        "value": "streetlightmodel:STEEL_Tubular_10m"
    }
}

key-value pairs Example

Sample uses simplified representation for data consumers ?options=keyValues

{
    "id": "streetlight:guadalajara:4567",
    "type": "Streetlight",
    "location": {
        "type": "Point",
        "coordinates": [-3.164485591715449, 40.62785133667262]
    },
    "areaServed": "Roundabouts city entrance",
    "status": "ok",
    "refStreetlightGroup": "streetlightgroup:G345",
    "refStreetlightModel": "streetlightmodel:STEEL_Tubular_10m",
    "circuit": "C-456-A467",
    "lanternHeight": 10,
    "locationCategory": "centralIsland",
    "powerState": "off",
    "controllingMethod": "individual",
    "dateLastLampChange": "2016-07-08T08:02:21.753Z"
}

LD Example

Sample uses the NGSI-LD representation

{
    "id": "urn:ngsi-ld:Streetlight:streetlight:guadalajara:4567",
    "type": "Streetlight",
    "location": {
        "type": "GeoProperty",
        "value": {
            "type": "Point",
            "coordinates": [-3.164485591715449, 40.62785133667262]
        }
    },
    "areaServed": {
        "type": "Property",
        "value": "Roundabouts city entrance"
    },
    "status": {
        "type": "Property",
        "value": "ok"
    },
    "refStreetlightGroup": {
        "type": "Relationship",
        "object": "urn:ngsi-ld:StreetlightGroup:streetlightgroup:G345"
    },
    "refStreetlightModel": {
        "type": "Relationship",
        "object": "urn:ngsi-ld:StreetlightModel:streetlightmodel:STEEL_Tubular_10m"
    },
    "circuit": {
        "type": "Property",
        "value": "C-456-A467"
    },
    "lanternHeight": {
        "type": "Property",
        "value": 10
    },
    "locationCategory": {
        "type": "Property",
        "value": "centralIsland"
    },
    "powerState": {
        "type": "Property",
        "value": "off"
    },
    "controllingMethod": {
        "type": "Property",
        "value": "individual"
    },
    "dateLastLampChange": {
        "type": "Property",
        "value": {
            "@type": "DateTime",
            "@value": "2016-07-08T08:02:21.753Z"
        }
    },
    "@context": [
        "https://schema.lab.fiware.org/ld/context",
        "https://uri.etsi.org/ngsi-ld/v1/ngsi-ld-core-context.jsonld"
    ]
}

Test it with a real service

Open Issues

• Initially is not considered practical to monitor individual power consumptions