Systems and methods for variable control and operation of HVAC components
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Solution Overview
Problem
Single-zone Variable-Air-Volume (VAV) HVAC systems require OEM-specific integrated controllers or Building Automation Systems controllers for operation, limiting flexibility and compatibility with other control systems.
Innovation Solution
A method and system that utilize a controller to measure temperature, setpoint, and determine operating modes for HVAC systems, allowing operation with non-OEM specific controllers by calculating temperature differences and selecting appropriate modes based on predetermined values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If VAV systems use OEM-specific integrated controllers or Building Automation Systems controllers, then the system operates with precise temperature control and energy efficiency, but the system lacks flexibility and compatibility with other control systems
Solution Approach 1:
The patent implements a universal controller that can interface with VAV systems from different manufacturers, enabling a single controller design to work across multiple OEM platforms. This is achieved through standardized communication protocols and adaptive control algorithms that can be configured for different system types, thereby improving controller compatibility without significantly increasing system complexity
Solution Approach 2:
The controller dynamically adjusts operational parameters such as airflow rates, temperature setpoints, and valve positions based on real-time sensor data and system conditions. By changing these parameters adaptively, the system maintains precise temperature control and energy efficiency across different OEM platforms while using a generic controller interface
2Adaptability or versatility
If VAV systems use generic controllers, then user flexibility and compatibility are enhanced, but precise temperature control and energy efficiency may be compromised
Solution Approach 1:
The controller continuously monitors temperature sensors, airflow measurements, and system status, then adjusts control outputs accordingly. This closed-loop feedback mechanism ensures that even with a generic controller interface, the system maintains precise temperature control by constantly comparing actual conditions with desired setpoints and making real-time corrections
Solution Approach 2:
The control system dynamically adapts its behavior based on operating conditions, transitioning between different control strategies as needed. For example, it can switch between proportional control, integral control, and derivative control components depending on the current system state, thereby maintaining temperature precision across varying conditions while using a universal controller
3Measurement precision
If VAV systems use OEM-specific controllers, then temperature control precision is maintained, but system adaptability and ease of operation are limited
Solution Approach 1:
The patent introduces an intermediary layer between the user interface and the VAV system components. This intermediary controller translates user-friendly commands into system-specific control signals, allowing users to operate the system with a generic, easy-to-use interface while the intermediary handles the complexity of OEM-specific protocols and control algorithms, thereby improving ease of operation without sacrificing temperature control precision
Data Source
AI summary
A method of controlling operations of an HVAC system includes measuring temperature within an enclosed space, receiving a setpoint temperature within the enclosed space, calculating a temperature difference between the measured temperature and the received setpoint temperature, and determining whether the temperature difference between the measured temperature and the received setpoint temperature is greater than or equal to a first predetermined temperature differential value. If the temperature difference between the measured temperature and the received setpoint temperature is greater than or equal to the first predetermined temperature differential value, determining whether the temperature difference between the measured temperature and the received setpoint temperature is greater than or equal to a second predetermined temperature differential value. If the temperature difference between the measured temperature and the received setpoint temperature is less than the second predetermined temperature differential value, selecting a first operating mode of a plurality of operating modes of the HVAC system.