DELI data platform

Note: The DELI data platform is currently under development and not yet operational. This documentation is provided for demonstration purposes only.

Overview

The DELI data platform is a system designed for storing, sharing, and analyzing energy research data. Many datasets documented in the energy research data catalogue are stored and accessed through this platform.

Key Features

  • Centralized storage for energy research data
  • Secure access control managed by dataset maintainers
  • Support for time series data using Apache IoTDB
  • Multiple access methods: Web UI, Grafana visualization, and programmatic access

Data Storage and Structure

The DELI platform utilizes Apache IoTDB for storing time series data. Understanding the IoTDB data model is crucial for effectively accessing and working with the data.

IoTDB Data Model

The data model consists of the following hierarchical components:

  1. Database: The top-level container for data
  2. Path Components: Organizational structure within the database
  3. Device: Represents a data source (e.g., a sensor or equipment)
  4. Measurement: Individual data points collected by a device
Example Data Path

root.kampusareena.Weather.WeatherStation.Temperature

In this example:

  • root.kampusareena is the database name
  • Weather is a path component that all weather data sources share.
  • WeatherStation is the device
  • Temperature is the measurement

Accessing Data

Users can access data through multiple methods:

  1. DELI platform web UI
  2. Grafana visualization platform
  3. IoTDB REST API
  4. Programming language-specific client libraries for IoTDB

Data Access Workflow

  1. Identify Required Data: Review the dataset documentation to find the database name, devices, and measurements you need.
  2. Request Access: Contact the dataset maintainer, providing the specific device names or measurement paths you require.
  3. Receive Credentials: Once approved, the maintainer will grant you access credentials.
  4. Connect and Query: Use your preferred access method to connect to the platform and query the data.

Dataset Documentation

For datasets stored in the DELI platform, the documentation will include:

  • Database name
  • List of devices
  • Available measurements for each device
  • Full path for each measurement

Example: Procem Project Weather Station

Weather observations from the weather station on the roof of the Sähkötalo buiding at Hervanta campus.

Database: root.kampusareena Device: WeatherStation Measurements:

  • Temperature: root.kampusareena.Weather.WeatherStation.Temperature
  • Humidity: root.kampusareena.Weather.WeatherStation.Humidity

Further Information

For detailed instructions on using the DELI data platform, including query examples and best practices, please refer to the DELI platform user guide (coming soon).

Support

If you encounter any issues or have questions about accessing data through the DELI platform, please contact the dataset maintainer or the DELI platform maintainers.