Device for operating a heating, ventilation, and air conditioning network
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Solution Overview
Problem
Traditional HVAC systems face challenges in communication, device interoperability, and user connectivity, relying heavily on Internet availability and centralized control, leading to siloed operation of multiple units and limited user control and monitoring capabilities.
Innovation Solution
A control unit with RS-BUS interface, UART ports, and a Wi-Fi module that communicates with HVAC sensors and units, enabling pan-HVAC communications, secure data transmission, and easy onboarding to existing wireless networks, allowing for distributed HVAC system management and user control from multiple locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional HVAC systems use centralized control and Internet-dependent communication, then system management is simplified, but system reliability deteriorates when Internet is unavailable and device interoperability is limited
Solution Approach 1:
The patent divides the HVAC system into distributed control units, each capable of independent operation and local decision-making. Each control unit manages specific HVAC equipment and can communicate with other units through multiple protocols (RS-485, Wi-Fi, Bluetooth), eliminating dependency on centralized control and Internet connectivity. This segmentation enables the system to continue functioning autonomously even when Internet access is unavailable.
Solution Approach 2:
The control units are designed with multi-functional communication capabilities, supporting multiple communication protocols (RS-485 for traditional HVAC devices, Wi-Fi for wireless connectivity, Bluetooth for mobile device pairing). This universality allows different types of devices and communication methods to interoperate within the same system, improving both reliability and adaptability without requiring complex centralized management.
2Productivity
If multiple HVAC units operate independently in siloed fashion, then device complexity is reduced, but system-wide coordination and energy optimization are limited
Solution Approach 1:
The distributed control units continuously exchange operational data, temperature readings, and system status information with neighboring units through supported communication protocols. This feedback mechanism enables real-time coordination across the HVAC system, allowing units to optimize their operation based on overall system conditions rather than working in isolation, thereby improving energy efficiency without requiring complex centralized management.
Solution Approach 2:
The patent combines multiple communication protocols (RS-485, Wi-Fi, Bluetooth) and control functions within each distributed control unit. This merging allows the system to achieve system-wide coordination and energy optimization while maintaining the simplicity of individual units, as each unit possesses integrated capabilities for both local control and network communication.
3Ease of operation
If thermostats offer limited control capabilities, then device complexity is minimized, but user control and monitoring capabilities are insufficient
Solution Approach 1:
The patent extends user control beyond the traditional thermostat interface by enabling communication with mobile devices through Wi-Fi and Bluetooth protocols. Users can control and monitor HVAC systems remotely through smartphone applications, adding a wireless communication dimension to the user interface. This approach enhances user control capabilities without significantly complicating the physical thermostat device, as the complexity is shifted to the software layer.
Data Source
AI summary
In one embodiment a control unit for managing an HVAC system includes an RS-BUS interface that may communicate with one or more HVAC units. A plurality of universal asynchronous receiver/transmitter (UART) ports, wherein at least one of the UART ports may communicate with an interactive display using an RS-485 communication protocol, A secure digital input output (SDIO) port configured to interface with a Wi-Fi module, wherein the Wi-Fi module is operable to communicate with a plurality of HVAC sensors, wherein the plurality of HVAC sensors operable to measure temperature. A processor that may receive, from the SDIO port, a sensor reading from one of the plurality of HVAC sensors, the sensor reading formatted according to an 802.11 Wi-Fi protocol. The processor may then convert the sensor reading from the 802.11 Wi-Fi protocol into an RS-BUS protocol, the RS-BUS protocol may control the one or more HVAC units. The processor may also convert the sensor reading from the 802.11 Wi-Fi protocol into the RS-485 communication protocol that may communicate with the interactive display. The processor may then transmit the sensor reading in the RS-485 communication protocol to the interactive display using the at least one UART port. The processor may also transmit the RS-BUS protocol to the one or more HVAC units using the RS-BUS interface.