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METRON Glossary

In this article, we will describe some of the terms used in the METRON-Energy Optimization platform to help you become familiar with the vocabulary of METRON's environment.

Navigation

  • Workspace: METRON-Energy Optimization workspaces are the menus for editing, creating and viewing your plant data. There are 4 different workspaces in METRON-Energy Optimization: Data Visualization, Alarms, Mapping, and Data Source.

Data Visualization workspace

  • Page: Also called dashboard, allows you to organize and visualize the different performance indicators of your energy projects through widgets. 
  • Project: Another term used in METRON-Energy Optimization to designate your pages. Projects are visible from the Data Visualization workspace, organized in your different energy uses or folders. 
  • Folder: Folders in METRON-Energy Optimization allow you to organize your pages/projects in a single space. You can only create folders from the "Data Visualization" workspace.
  • Widget: Widgets are data visualization tools allowing you to display your tags, in several different ways (curve, pie chart, table, etc.), to follow or explore your relevant data related to your energy projects. 
  • Tag: A tag is a piece of data that goes into the METRON database. It can be of any type (from the industrial site, from a weather station or from calculations made by METRON with calculated variables). Several synonyms are used on the platform to designate a tag: variable, sensor or series. 

  • Granularity: Granularity is a term defining the time interval between two points after aggregation of a series.
    Example: If a series has several points per hour and we apply the granularity 1h, and the aggregation Maximum then we will display: 
    - at 00h00 the maximum reached by the series between 00h00 and 00h59,
    - at 1h00 the maximum reached by the series between 1h and 1h59
    and so on.

Data source workspace

  • Variable: A set of data linked through equations available in the METRON syntax
  • Series: Another term for a variable.
  • Sensor: Another term for a tag
  • Qualified series: To be able to visualize and use a tag on the platform, it is necessary to qualify it. This action allows you to change the data coming back as raw data to aggregated (processed) data. Once your tag is qualified you can display it in real time in the data visualization space, create an alarm or create a new calculated series.
  • Calculated series: Variable created from the Data Source workspace from other variables already uploaded on the platform
  • Contextualize the data:  Assign a context to your data by associating it with a perimeter, an equipment, a network or an energy use of your plant.
  • Tag Path: Corresponds to the unique identifier of a tag, which is automatically generated by the platform when it is stored in METRON databases.
  • Aggregation: Calculation performed between your raw data in order to aggregate them together at a particular granularity to speed up the display time on the platform. This aggregation result is stored in a database called "Cache".
  • Interpolation: The value taken between two points: draw a linear line or a step.
  • Cache: To speed up the visualization of the data, the data is stored in a temporary memory: the cache, which is updated periodically. In detail, the cache is automatically refreshed every 5 minutes over the previous hour, every hour over the previous 48 hours, every day over the previous 40 days.
  • Boolean/Boolean variables: A Boolean variable is an expression that gives a Boolean value (true or false)

Mapping workspace

  • Energy use: All the energy consumed on the industrial site (electricity, natural gas, propane gas, fuel ...) according to the different processes and uses of the latter. In METRON-Energy Optimization, the energy uses are created from the Cartography area and allow you to classify your different pages/projects.
  • Property: Allows you to bring more contextualization to your tags and link them to your networks or machines. Ex: humidity, pressure, volume, etc. The properties available in METRON -Energy Optimization are directly derived from the METRON ontology.
  • Ontology: The ontology is a structured knowledge base that contains data models representing concepts and the relationships between these concepts. Within the METRON ontology, we transcribe the human knowledge of the industrial world. For example, we define the set of utilities (compressor, chiller, etc.), the actions performed by the utilities (compressing a fluid, etc.) or the physical properties attached to the energy fluids (pressure, humidity level, etc.). One of the objectives of the ontology is to define all the concepts in a generic way once. The concepts can then be reused from one project to another.

EnergyLab workspace

  • Reference model/baseline: Mathematical model based on sample data, known as "training data", in order to make predictions (e.g. predict electric consumption based on the production). The score of a model is calculated by looking at the difference between the model and the test data.
  • Bloc: data processing blocks are the foundations used to create models. They have inputs and outputs. A block is dedicated to a specific task, like “Data Cleaning”, “Feature construction”.  Given a set of data as input and some configuration, it will process the data and return outputs.