Building Automation Controller With Global Data Sync and Secure BACnet/SC
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Solution Overview
Problem
Existing building automation systems face challenges in secure communication and integration of multiple subsystems, lacking IT friendliness and cybersecurity, which hampers seamless operation and management.
Innovation Solution
Implementing BACnet Secure Connect (BACnet/SC) with TLS 1.3 encryption and certificate-based authentication for secure, encrypted communication, along with an embedded web interface for commissioning and servicing, enhancing firmware upgrade capabilities and supporting various communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional building automation communication protocols are used, then device compatibility and integration are achieved, but security and cybersecurity are compromised
Solution Approach 1:
The patent introduces an embedded web interface as an intermediary layer between traditional building automation devices and modern IT systems. This web interface acts as a mediator that enables secure HTTPS communication while maintaining compatibility with existing automation protocols, thus resolving the contradiction between security requirements and IT compatibility needs
2Adaptability or versatility
If multiple subsystems are integrated in building automation systems, then functional capability is enhanced, but system complexity and operational complexity increase
Solution Approach 1:
The patent implements a universal web-based interface that can serve multiple subsystems (HVAC, lighting, security, etc.) through a single standardized access point. This multi-functional interface reduces operational complexity by providing consistent commissioning, monitoring, and control capabilities across all integrated subsystems, thereby managing complexity while maintaining versatility
3Reliability
If secure communication protocols like BACnet/SC with TLS 1.3 are implemented, then cybersecurity is improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent implements automatic certificate management and encryption/decryption functions within the automation controller itself. The device performs self-service security operations including TLS 1.3 handshakes, certificate validation, and encrypted data processing without requiring external security infrastructure, thereby reducing implementation complexity while maintaining high cybersecurity standards
Data Source
AI summary
A controller of a building automation system, and a method thereof, comprising a communication component and a processor. The communication component communicates with one or more other controllers of multiple automation level devices. The automation level devices are associated with an automation level network of the building automation system. The automation level devices include the controller and the other controller(s). The processor designates a particular controller of the automation level devices as a global data server. The global data server provides synchronized images of a predefined set of objects across all controllers of the automation level network.