HVAC Data Bus Communication for Coordinated Control and Diagnostics
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Solution Overview
Problem
Conventional HVAC systems lack advanced control and data acquisition techniques, leading to limitations in installation, operation, maintenance, and energy efficiency, as well as requiring more complex and costly repairs.
Innovation Solution
A networked HVAC system with a data bus architecture that enables communication among components for identity, capability, status, and operational data sharing, allowing for more flexible installation, easier operation, superior temperature and humidity control, and improved diagnostics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If conventional HVAC systems are used, then basic temperature control is achieved, but advanced control and data acquisition capabilities are lacking
Solution Approach 1:
The patent implements a nested communication architecture where a data bus network is embedded within the HVAC system, allowing multiple levels of data exchange between components such as controllers, sensors, and actuators. This nested structure enables advanced control and comprehensive data acquisition without adding external complexity.
Solution Approach 2:
The patent introduces communication protocols as intermediaries that facilitate data exchange between HVAC components. These protocols act as mediators that enable standardized information transfer, allowing advanced control functions and data acquisition capabilities to be implemented across the system without direct complex connections between all components.
2Ease of operation
If conventional HVAC systems are used, then basic operation is achieved, but installation and maintenance complexity increases
Solution Approach 1:
The patent divides the HVAC system into modular components that communicate through standardized data bus protocols. This segmentation allows for easier installation as components can be independently configured and connected, reducing overall installation complexity while maintaining ease of operation through modular architecture.
Solution Approach 2:
The patent implements universal communication protocols that enable different HVAC components to interact through standardized interfaces. This multi-functionality allows the same data bus infrastructure to support multiple functions including control, monitoring, and diagnostics, simplifying installation while enhancing operational capabilities.
3Use of energy by moving object
If conventional HVAC systems are used, then basic cooling and heating is achieved, but energy efficiency is limited
Solution Approach 1:
The patent implements feedback mechanisms through the data bus network that continuously monitor system performance and environmental conditions. This feedback enables dynamic adjustment of operating parameters to optimize energy efficiency, with the added system architecture complexity offset by the energy savings achieved through intelligent control.
Solution Approach 2:
The patent enables dynamic control of HVAC operations through real-time data exchange on the communication bus. System parameters such as temperature setpoints, fan speeds, and compressor operation can be dynamically adjusted based on current conditions, improving energy efficiency while the dynamic architecture becomes increasingly sophisticated.
Data Source
AI summary
The disclosure provides an HVAC data processing and communication network and a method of manufacturing the same. In an embodiment, the network includes a first subnet controller and a system device. The first subnet controller is coupled to a data bus and configured to arbitrate with a second subnet controller for control of the subnet. The system device is configured to transition from a reset state to a first state that includes pre-startup tasks, and transition from the first state to a second state that includes waiting for the subnet controller to provide configuration parameters to the system device.