Michał Kruszewicz, CTO, Ampio, says that infrastructure needs to be truly decentralised.
When discussing smart building automation, the industry is largely divided into well-established paths. For decades, European smart homes have been shaped by either the robust, highly standardised framework of KNX or centralised platforms like Loxone, built around a core Miniserver. Both have earned their market share. However, as buildings scale and operational demands increase, a critical engineering debate is resurfacing: the vulnerability of the single point of failure.
In modern high-end residential complexes and sprawling commercial spaces, traditional designs often rely on a master controller to dictate logic and traffic. If that central brain goes down, the entire installation halts. For future-proof buildings, true reliability requires shifting from centralised control to decentralised resilience.
The vulnerability of centralisation vs. distributed logic
In a typical centralised setup, a main server processes commands for lighting, HVAC, shading, and security. While configuration during setup is straightforward, the long-term risks are apparent. A power surge, software glitch, or hardware degradation at the core can immobilise an entire building.
To overcome this, true resilience demands distributed logic, where decision-making is embedded directly into every module along the communication line, rather than concentrated in a single controller.
The CAN bus advantage
This is where standardised industrial technologies like the CAN (Controller Area Network) bus - originally developed by Bosch in the 1980s - change the paradigm. Unlike master-slave networks, the CAN bus is a broadcast messaging architecture where no superior module directs traffic. Any device plugged into the bus can transmit a message that all other nodes on the network can hear.
European manufacturers embracing this topology, such as Ampio, leverage this decentralised approach as an alternative tier to traditional giants like KNX or Loxone. Because logic resides locally in the modules, the failure of a single device never shuts down the broader installation.
Managing network collisions on a masterless bus requires robust protocols. The implementation found in Ampio building automation utilises an access priority mechanism based on bit dominance (arbitration via MAC addresses). When two modules attempt to transmit data simultaneously, the system resolves the conflict seamlessly without dropping packets or interrupting transmission. Combined with industrial power supply redundancy modules protecting against phase shutdowns and short circuits, this ensures high uptime for commercial properties.
Real-world resilience in action: the NCDC office building
Theory is essential, but performance is proven on the ground. A prime example of distributed automation handling complex commercial requirements is the implementation at the NCDC office building in Szczecin, Poland, powered by Ampio building automation.
Commercial office spaces demand rigorous control - balancing multi-zone access control, high-density lighting, and environmental management across large operational areas. At NCDC, an advanced Ampio deployment handles critical infrastructure, including sophisticated access control integration, seamless security features, and dynamic environmental adjustments.
Because the system relies on a distributed bus network rather than a fragile central core, the NCDC installation operates with absolute predictability. High-frequency traffic from access control readers, security sensors, and lighting nodes flows across the CAN bus without administrative bottlenecks. If maintenance or reconfiguration is required in one zone, the rest of the building's infrastructure remains fully operational.
Building for the next decades
While centralised controllers and industry-pioneering standards have defined European smart buildings for years, architectural evolution never stops. For developers, system integrators, and architects, exploring decentralised, bus-based topologies with solutions like Ampio isn't about replacing established market players, it's about expanding the definition of absolute building resilience. When the infrastructure is truly decentralised, downtime becomes a thing of the past.