Building Digital Twin Change Feed for Context-Aware Operations
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Solution Overview
Problem
Current building management systems lack dynamic, scalable, and adjustable solutions for holistic management of building operations, as discrete predefined controlling systems operate independently without knowledge of the building's overall state.
Innovation Solution
A cloud-based building system that receives events from building equipment, enriches them with contextual data, and provides enriched events to consuming applications, utilizing schema matching, graph projections, and change feeds to facilitate holistic management and communication across building subsystems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If discrete predefined controlling systems operate each subsystem individually, then each subsystem can be controlled independently, but holistic management of the building cannot be achieved
Solution Approach 1:
The patent merges discrete subsystems into a unified event-driven architecture where all building subsystems (HVAC, lighting, security, etc.) are integrated through a central event bus. This allows holistic management while maintaining individual subsystem independence through event-based communication rather than tight coupling.
Solution Approach 2:
The event bus serves as a universal communication infrastructure that handles multiple functions: event routing, data distribution, contextual information sharing, and coordination between different subsystems. This single universal mechanism replaces multiple dedicated communication channels.
2Adaptability or versatility
If predefined controlling systems are used, then implementation is straightforward, but dynamic and scalable solutions cannot be provided
Solution Approach 1:
The system transitions from static predefined control to dynamic event-driven control where subsystems can be added, removed, or modified at runtime. Event sources and consuming applications can dynamically subscribe to or publish events without system reconfiguration, enabling flexible adaptation to changing building requirements.
Solution Approach 2:
The building management system is segmented into independent event sources, event bus, and consuming applications. Each component operates autonomously and communicates through standardized events, allowing individual components to be developed, deployed, and scaled independently while maintaining ease of implementation through modular architecture.
3Loss of information
If subsystems operate independently without knowledge of building state, then subsystem control is simple, but contextual awareness and coordinated operation are lost
Solution Approach 1:
The event bus acts as an intermediary that collects, standardizes, and distributes contextual information from all subsystems. Instead of subsystems directly exchanging complex information, they publish events to the bus which handles routing and distribution, reducing information processing complexity while improving contextual awareness.
Solution Approach 2:
The event-driven architecture establishes feedback loops where subsystems publish state changes as events, consuming applications process these events and generate control actions, which are published back as events to actuate subsystems. This continuous feedback enables contextual awareness and coordinated operation while maintaining simple subsystem design.
Data Source
AI summary
A building system of a building including one or more memory devices having instructions thereon, that, when executed by one or more processors, cause the one or more processors to manage a plurality of entitlements for a plurality of subscriptions of one or more buildings with a building entitlement model, receive a first request to perform a first operation for a first subscription and a second request to perform a second operation for a second subscription, and implement the first operation on first computing resources of a first zone based on the building entitlement model in response to a first determination that the first subscription has the first entitlement and implement the second operation on second computing resources of the second zone based on the building entitlement model in response to a second determination that the second subscription has the second entitlement.