Systems and methods for air temperature control using a target time based control plan
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Solution Overview
Problem
Existing HVAC systems face challenges with interoperability between communicating and non-communicating equipment, leading to limited consumer choice, high costs, and difficulty in retrofitting or upgrading without complete replacement.
Innovation Solution
A controller that operates HVAC systems independently of a thermostat, capable of communicating with both communicating and non-communicating units, adjusts control plans based on target times to achieve desired temperatures efficiently, and iteratively refines the control strategy based on actual performance versus target performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If communicating thermostats and HVAC equipment are used to provide increased flexibility and automated identification, then control precision and system intelligence are improved, but system cost and device complexity increase significantly
Solution Approach 1:
A communicating thermostat acts as an intermediary between the user and communicating HVAC equipment. The thermostat handles complex communication protocols, equipment identification, and control signal generation, while presenting a simplified interface to the user. This mediator approach allows sophisticated control capabilities without requiring the entire system to be complex, resolving the contradiction between control precision and system complexity.
2Extent of automation
If communicating systems are implemented to provide automated identification and control capabilities, then system intelligence and ease of installation are improved, but interoperability with legacy equipment deteriorates
Solution Approach 1:
The communicating thermostat is designed with multi-functionality to work with both communicating and non-communicating (legacy) HVAC equipment. It can automatically detect equipment type and adapt its communication method accordingly, providing automated identification and control for modern equipment while maintaining compatibility with older systems through traditional control signals. This universal approach resolves the contradiction between automation and interoperability.
3Productivity
If communicating HVAC equipment is used to achieve improved control and automation, then system performance is improved, but consumer choice and ease of retrofitting deteriorate due to limited equipment compatibility
Solution Approach 1:
The communicating thermostat serves as a mediator that enables high-performance communicating equipment to work with legacy systems. It translates between modern communication protocols and traditional control signals, allowing consumers to upgrade individual components (like a thermostat or HVAC unit) without requiring complete system replacement. This resolves the contradiction between system performance and equipment compatibility by isolating the complexity in the thermostat while maintaining broad interoperability.
Data Source
AI summary
A system and method for controlling the air temperature of a building using a control plan based on a target time. The system includes a controller which may be connected to a number of indoor and outdoor heating ventilation and air-conditioning units. The system may include a thermostat. The system may also operate without a thermostat. The method includes determining a control plan to reach a desired temperature in a target time. The method also includes updating the plan by comparing the actual time to reach the desired temperature with the target time.