HVAC switchable communication bus and power bus control board systems and methods
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Solution Overview
Problem
HVAC systems face operational inflexibility due to the use of different communication protocols and power supplies by various devices, leading to compatibility issues and increased complexity in control systems.
Innovation Solution
A control board with switchable I/O ports and power buses that can dynamically adapt to different communication protocols and power supplies by determining the target protocol and coupling the appropriate communication and power buses, allowing for seamless integration of diverse devices and enhanced operational flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple communication protocols are supported through separate I/O ports, then compatibility with different devices is improved, but device complexity increases
Solution Approach 1:
The control board implements a universal I/O port that can dynamically adapt to different communication protocols (BACnet, Modbus, etc.) through software configuration rather than requiring separate dedicated ports for each protocol. This multi-functional approach allows a single port to serve multiple protocol requirements, reducing hardware complexity while maintaining broad device compatibility
Solution Approach 2:
The system employs dynamic protocol selection where the communication protocol is determined at runtime based on the connected device type. The control board can switch between different communication protocols on the same I/O port depending on what device is detected, allowing flexible adaptation without permanent hardware configurations for each protocol
2Adaptability or versatility
If separate power buses are used for different equipment configurations, then power supply compatibility is improved, but system complexity increases
Solution Approach 1:
The control board implements a universal power bus system that can dynamically provide different voltage levels (24VAC, 24VDC, 120VAC, etc.) through a single power interface. The system detects the power requirements of connected equipment and automatically configures the appropriate power supply, eliminating the need for separate dedicated power buses for each equipment type
Solution Approach 2:
A power management intermediary component is introduced that sits between the power source and equipment, detecting power requirements and automatically selecting or converting power types. This intermediary handles the complexity of multiple power configurations internally while presenting a simplified interface to both the power source and connected equipment
3Ease of operation
If switchable I/O ports are implemented, then operational flexibility is improved, but manufacturing complexity increases
Solution Approach 1:
The control board implements software-based switchable I/O ports that can be configured through firmware or software settings rather than requiring physical switches or complex hardware reconfiguration. This allows the same hardware design to support multiple operational modes and device types through software programming, simplifying manufacturing while maintaining operational flexibility
Solution Approach 2:
The system changes operational parameters (communication protocol type, power voltage level, data transmission rate) through software configuration rather than physical hardware changes. This allows a single manufactured control board to adapt to different operational requirements by modifying software parameters, avoiding the need for multiple hardware variants
Data Source
AI summary
The present disclosure includes a control board including a switchable input/output port. The switchable I/O port may provide a switchable communication bus capable of selectively supporting one of multiple different communication protocols and may provide a switchable power bus capable of selectively conducting electrical power from one of multiple different power supplies. As such, the control board may communicatively and/or electrically couple to a wide range of devices. To that end, the control board may support the dynamic interchange and reconfiguration of devices coupled to the control board, allowing a control system including the control board greater operational flexibility.