CX2 is an open data layer that makes a building's operational data accessible, understandable and usable, without creating a new dependency on a single vendor.
CX2 has been developed and tested on two pilot buildings, and development continues. This page explains where we come from, what we hold on to, what the six layers of CX2 are, and what comes next. Each layer has its own page.
CX1 was founded in 2016 as an engineering firm with a single focus: commissioning of buildings, that is, verifying that a building performs as designed. The background was the experience that even good projects often end up as buildings that do not run as drawn. The faults sit in operation, and they show up in the data.
Data-driven commissioning therefore became a field of its own: systematic follow-up on operational data, so technical faults are caught in time and every kilowatt-hour turns into a good indoor climate.
That work ran into the same three obstacles in every building:
CX2 is the answer to those three obstacles. Not as yet another building management system, but as a data layer between the building's technical systems and the tools that need the data.
Data is stored locally with the building owner, and it can be exported and taken along. CX2 is meant to reduce vendor dependency, not create a new one.
Where the data is stored, which connections leave the building, and who has access must be possible to show. We would rather show how it fits together than ask for trust.
A data point without context is not information. CX2 therefore describes the building as relations, so both people and software can work with the meaning of the data. How it works.
We explain the technology in the order it makes sense: first the problem and the value, then the architecture, and finally the details.
CX2 is built in layers. Three of them you can get today. Three we are working towards. Each layer has its own page.
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Available
The foundation of CX2: data collection from the building's technical systems, a local time-series database, a semantic model and tools for viewing and analysing data. By open we mean documented interfaces, exportable data and open data models, so other tools can build on top of the data layer.
Developed and tested on the pilot buildings in the Energy Cluster project.
Read more about CX2 Open →Available
Consulting and implementation from CX1: installation, integration with the building management system, mapping of data points, quality assurance of the semantic model, dashboards and commissioning analyses.
Read more about CX2 Service →Available
Operation of the local CX2 installation: monitoring, security updates, backup and support, so the building owner does not have to administer a server.
Read more about CX2 Care →Planned
Overview across many buildings: comparison, benchmarking, central alarm handling and analyses that can be run on the whole portfolio at once.
Does not exist yet.
Read more about CX2 Hub →Planned
An idea: building owners voluntarily making anonymised data available for research and education under controlled terms. Data is protected. Knowledge is shared.
Requires external funding and has not been started.
Read more about CX2 Commons →Planned
The active layer on top of CX2 Open: algorithms that calculate setpoints and start times from the building's data and the Brick model, while the building management system continues to perform the control.
Does not exist yet.
Read more about CX2 Algorithm →CX2 has been developed and tested among other things through AI-Cx, a proof-of-concept project under Energy Cluster Denmark.
The project investigates whether generative AI can automate the mapping of building data that is done by hand today: reading the building's documentation (diagrams, floor plans, point lists and 3D models) and translating it into a semantic model in Brick Schema and RealEstateCore.
CX2 itself uses Brick Schema. RealEstateCore is a related standard from the real estate sector, and the two are designed to work together.
It is being tested on two newly built educational buildings that have just been through traditional commissioning: TEC Ballerup and TietgenSkolen City in Odense (TCU).
CX1 ApS is a consultancy in Herning, Denmark, specialising in commissioning of buildings. We have worked with buildings across Denmark since 2016.
CX2 has been developed and is run by CX1 ApS.
If you have a question, a building, or want to follow along, write to cx1@cx1.dk.
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