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Open Sensor Networks

Presentation on Open Sensor Networks, Smart Emission, SensorThings API, TheThingsNetwork, @pycomIOT etc. Presented at SenseMakersAms Meetup: https://meetup.com/sensemakersams/events/pwflgryzmbxb/

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Open Sensor 

Networks
Just van den Broecke
Just Objects B.V.
https://justobjects.nl
https://twitter.com/justb4
IoT SenseMakers Ams Meetup
Amsterdam - 18 sept, 2019
Met dank aan
ABOUT
Independent Open
Source Geospatial
Professional
justobjects.nl
Member of the
OpenGeoGroep (NL)
www.opengeogroep.nl
Chair 

OSGeo.nl
1. Intro
Air Quality Sensor Projects
• 2014/2015 - SOSPilot - Geonovum en RIVM

RIVM LML Data via OGC Sensor Observation Service (SOS)

http://sensors.geonovum.nl 

• 2015-2017 - Smart Emission Nijmegen - Consortium

Burgers meten zelf luchtkwaliteit en geluid, building the SE Platform

http://smartemission.ruhosting.nl 

• 2017-2018 - Smart Emission - Consolidation en Scaling

Smart City Living Lab (multiple cities),

Green Challenge Nijmegen, AirSensEUR (EU JRC)

Luftdaten.info Integration

SE Platform Migration to PDOK - Kadaster

https://data.smartemission.nl 

• 2018- AirSensEUR - Open HW Sensor Box - European Commission JRC

deploy 5 AirSensEUR Boxes, connect to Smart Emission Platform

https://justobjects.nl/emit-5
Smart Emission
Nijmegen Project
Participants
http://smartemission.ruhosting.nl/
Inclusive Citizen Sensing
▪ Citizen-sensor-networks for fine-grained
measurements, with new low-cost sensing devices
▪ Transparency and democracy of pollution
monitoring, ‘making the externalities (e.g. noise, air
pollution) visible’
▪ Cost-effective environmental monitoring with 

Open Source, Open Data, Open Standards (APIs)
Smart Emission Nijmegen
Which type of low cost sensors to deploy?
Quality and Price
Number of sensors applied in a city
Smart Emission
“Jose”
Aireas
“Airbox”
“Smart Citizen Kit”
RIVM National
AQ Stations
Smart Emission Nijmegen
Ad

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Open Sensor Networks

  • 1. Open Sensor 
 Networks Just van den Broecke Just Objects B.V. https://justobjects.nl https://twitter.com/justb4 IoT SenseMakers Ams Meetup Amsterdam - 18 sept, 2019 Met dank aan
  • 2. ABOUT Independent Open Source Geospatial Professional justobjects.nl Member of the OpenGeoGroep (NL) www.opengeogroep.nl Chair 
 OSGeo.nl 1. Intro
  • 3. Air Quality Sensor Projects • 2014/2015 - SOSPilot - Geonovum en RIVM
 RIVM LML Data via OGC Sensor Observation Service (SOS)
 http://sensors.geonovum.nl 
 • 2015-2017 - Smart Emission Nijmegen - Consortium
 Burgers meten zelf luchtkwaliteit en geluid, building the SE Platform
 http://smartemission.ruhosting.nl 
 • 2017-2018 - Smart Emission - Consolidation en Scaling
 Smart City Living Lab (multiple cities),
 Green Challenge Nijmegen, AirSensEUR (EU JRC)
 Luftdaten.info Integration
 SE Platform Migration to PDOK - Kadaster
 https://data.smartemission.nl 
 • 2018- AirSensEUR - Open HW Sensor Box - European Commission JRC
 deploy 5 AirSensEUR Boxes, connect to Smart Emission Platform
 https://justobjects.nl/emit-5
  • 5. Inclusive Citizen Sensing ▪ Citizen-sensor-networks for fine-grained measurements, with new low-cost sensing devices ▪ Transparency and democracy of pollution monitoring, ‘making the externalities (e.g. noise, air pollution) visible’ ▪ Cost-effective environmental monitoring with 
 Open Source, Open Data, Open Standards (APIs) Smart Emission Nijmegen
  • 6. Which type of low cost sensors to deploy? Quality and Price Number of sensors applied in a city Smart Emission “Jose” Aireas “Airbox” “Smart Citizen Kit” RIVM National AQ Stations Smart Emission Nijmegen
  • 8. Smart Emission Platform Resulting from the
 Smart Emission Nijmegen project and subsequent integration into the Dutch Kadaster PDOK Kubernetes Cloud
  • 9. Smart Emission Platform WMS WFS SOS STA Client Apps/Viewers web-APIs sensors Collector APIs SE Platform - The Big Picture Dataflow luftdaten.info
  • 10. luftdaten.info Smart 
 Emission Platform WMS WFS SOS STA Intemo Data Collector InfluxDB Data Collector RIVM LML SOSInfluxDB HTTP Luftdaten API Harvesters ETL LML Influx HTTP Sensors API API Outbound Inbound Dataflow SE Platform - Dataflow and APIs Whale API Decoupling
 Push/Pull:
 Data Collectors +Harvesters MQTT
  • 11. Viewers talk to (OGC) APIs https://data.smartemission.nl (data platform) Heron Viewer Smart App 52North SOS Viewer Grafana Extern
  • 14. All Data 
 is 
 Spatio-Temporal Spatial Temporal Geo IoT
  • 17. All Data 
 is 
 Spatio-Temporal Spatial Temporal Geo IoT
  • 20. Open APIs & Tech for Spatio-temporal to the Rescue?
  • 22. OGC SensorThings API Showcase Modern Standard (REST) API-based: HTTP Verbs Data Model is First Class Citizen Multiple FOSS Implementations Linked Data, Paging, OData Pub/Sub via MQTT GOST SOS-Killer? (Geo)JSON Encoding
  • 25. STA Entity Real World Entity Instance Thing Thermostaat Honeywell Lyric T6 #234 Location Locatie Thermostaat Building 9, Kamer 14 Sensor Temperatuur Sensor DHT11 #12 ObservedProperty Temperatuur Graden Celsius Observation Waarde + Tijd 21C op 2018-12-11T18:09:05 Datastream (Verbindt T, S, OP en O) FeatureOfInterest Kamer Building 9, Kamer 14 SensorThings API - Not just Sensor Devices
  • 26. SensorThings API - Example SE Entity Mapping
  • 27. STA Entity Real World Entity Instance Thing Vogelhut Natuurmon. Vogelhut #234 Location Plaats Vogelhut Mosselseweg 64, 1245AF Otterlo Sensor Verrekijker Swarovski Swarovision 1900 10x40 ObservedProperty Diersoort Vogels Observation Aantal + Tijd 1 op 2018-12-11T18:09:05 Datastream (Verbindt T, S, OP en O) FeatureOfInterest Soort en Locatie Vogel Merel op 4.9344, 52.567 SensorThings API - Example Mapping
  • 28. Geodan GOST - Open Source STA in GoLang https://github.com/gost
  • 33. IoT Platform met STA SensorThings API Server API Dataflow MQTT STA Dashboards/ Viewers Sensors
  • 34. Fun PoC 
 Bridging IoT with Geo: TheThingsNetwork to SensorThings API
  • 35. Demo Setup GOST API Dataflow GOST Dashboard Node-Red ThingsNode MQTT MQTT STA Process MQTTBridge ttn2sta PySense + LoPy Docker 
 Postman ProvisioningAny LoRa/TTN Device Docker Containers
  • 36. Steps • Install ThingsNode as TTN App and Device as usual • Test MQTT uplink: 
 $ mosquitto_sub -h eu.thethings.network -t ‘+/devices/+/ up'-u 'mythingsnode1' -P ‘ttn-account-v2.*****’ -v • Install SensorThings Geodan GOST Stack
 $ wget https://raw.githubusercontent.com/gost/
 docker-compose/master/docker-compose.yml
 $ docker-compose up • Postman: provision STA Entities, Examples: 
 https://github.com/gost/workshops/tree/master/ 2017_foss4g_boston • Node-Red (or regular Python): develop MQTT Bridge
 MQTT from TTN: 
 https://www.thethingsnetwork.org/docs/applications/mqtt/
 MQTT to STA: see “GOST FOSS4G Boston” workshop above
 ttn2sta: copy TTN Payload data to STA result and 
 result- and/or phenomenonTime

  • 37. TTN to STA Mapping
  • 38. All the Code needed!
  • 40. ▪ All Entities (root)
 http://localhost:8080/v1.0 ▪ All Observations from all Things (paged)
 http://localhost:8080/v1.0/Observations ▪ All Observations Thing with id=3
 http://localhost:8080/v1.0/Things(3)?$expand=Datastreams/Observations ▪ Last Observation Thing(3)
 http://localhost:8080/v1.0/Things(3)?$expand=Datastreams/Observations($top=1) ▪ All Observations after Dec 11, 2018 20:57 UTC
 http://localhost:8080/v1.0/Observations?$filter=resultTime%20gt %20%272018-12-11T20:57:00.000Z%27 ▪ Etc, more examples:
 https://smartplatform.readthedocs.io/en/latest/cookbook.html STA REST/OData Queries
  • 41. Links https://data.smartemission.nl (data platform) https://github.com/smartemission (source code) https://smartplatform.readthedocs.io (documentation) https://smartplatform.readthedocs.io/en/latest/evolution.html (SensorSDI) https://geoforum.nl/c/datasets/sensordata (support and comms) https://en.wikipedia.org/wiki/SensorThings_API (SensorThings API, STA) https://www.gostserver.xyz/ (Geodan STA Open Source Implementation) https://justobjects.nl/category/smartemission/ (Just’s Blog on sensor stuff) https://airsenseur.org/ (EU AirSensEUR) https://www.geonovum.nl/over-geonovum/actueel/doe-mee-met-de- hackaton-sensorthings-api-eind-oktober (STA Hackathon) 
 We would like to acknowledge for their valuable input: All partners of the Smart Emission Consortium Thank You! https://www.slideshare.net/justb4/open-sensor-networks This Presentation: