SensLog is an integrated solution for sensor networks that consists of a data model and server-side application. It receives measured data from nodes or gateways, stores it in a database based on the OGC Observations & Measurements standard, analyzes and publishes the data through web services. SensLog is suitable for both static sensors like meteorological stations and mobile sensors like vehicle tracking. It provides a REST API and can perform analytical services on sensor data stored in its relation database with spatial extension.

1. SensLog – way to standardize VGI data
collection.
Karel Charvat, Michal Kepka and Runar
Bergheim, Simon Leitgeb, Dmitrij Kozuch, Tomas
Reznik
28.09.2016 INSPIRE 2016 Barcelona

2. SensLog
• SensLog is an integrated solution for sensor
networks.
• SensLog consists of data model and server-side
application which is capable to store, analyses and
publish data in various ways.
• SensLog receives measured data from nodes or
gateways, stores data properly in the database,
pre-processes for easier queries if desired and then
publishes data through the system of web-services.
28.09.2016 INSPIRE 2016 Barcelona

3. SensLog
• SensLog is suitable for sensor networks with static
sensors (e.g. meteorological stations) as well as for
mobile sensors (e.g. tracking of vehicles, human-as-
sensor).
• Database model was based on standardized data
model for observations from OGC
Observations&Measurements.
28.09.2016 INSPIRE 2016 Barcelona

4. SensLog
• Main component for storing, managing and
publishing sensor data
• Meeting point for measured sensor data
• Provides REST API for both sides of chain – data
producers and data consumers
• Works above relation DB with spatial extension –
can provide variety of analytical services
28.09.2016 INSPIRE 2016 Barcelona

5. Database model - core
28.09.2016 INSPIRE 2016 Barcelona

6. Database model - VGI
extension
Core model
28.09.2016 INSPIRE 2016 Barcelona

7. SensLog VGI extension
• Stores VGI observations from web and mobile
applications
• Attributes of VGI observations not only simple
datatypes but multimedia files too
• Few mandatory attributes, optional according to
users needs with only small limitation on data
volume
28.09.2016 INSPIRE 2016 Barcelona

8. Examples of usage
Ground water monitoring
Meteorogical station
28.09.2016 INSPIRE 2016 Barcelona

9. Farm Telemetry
28.09.2016 INSPIRE 2016 Barcelona

10. VGI examples
28.09.2016 INSPIRE 2016 Barcelona

11. White board example
28.09.2016 INSPIRE 2016 Barcelona

12. SensLog
• Source code available on:
https://github.com/mkepka/senslog
• News and detail documentation:
http://sdi4apps.eu/keywords/opensensorsnetwork/
• Running instance on:
http://portal.sdi4apps.eu/SensLog-VGI/
The instance is under high development now…
…new features are available every day!
28.09.2016 INSPIRE 2016 Barcelona

13. HSLayers NG, HSLayers NG
Mobile
• Source code of HSLayers available on:
https://github.com/hslayers/hslayers-ng
• Source Code of HSlayers Mobile available on
https://github.com/hslayers/cordova
• Web Pages https://ng.hslayers.org/
• charvat@ccss.cz
28.09.2016 INSPIRE 2016 Barcelona