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 limitations due to the high cost and limited interoperability of communicating systems, which restrict consumer choice and flexibility in retrofitting or upgrading, while legacy systems lack advanced control features.
Innovation Solution
A controller that can operate both communicating and non-communicating HVAC units, coupled with thermostats and sensors, using a communication module for data exchange and a control plan adjustment mechanism to achieve target temperatures within specified times, allowing for device discovery and configuration through various methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If communicating HVAC systems are used, then control flexibility and automation are improved, but system cost increases and interoperability decreases
Solution Approach 1:
The HVAC controller is designed to support multiple communication protocols including BACnet, Modbus, and proprietary protocols, allowing it to function with both communicating and non-communicating equipment. This multi-functionality enables the system to achieve advanced control capabilities while maintaining broad compatibility across different equipment types and manufacturers.
Solution Approach 2:
The controller acts as an intermediary device that bridges communicating HVAC equipment and traditional non-communicating equipment. It translates between different communication protocols and provides standardized control interfaces, enabling interoperability without requiring complete system replacement while still delivering automated control benefits.
2Ease of operation
If communicating systems are implemented, then control capability is improved, but equipment compatibility and consumer choice are reduced
Solution Approach 1:
The communication interface is segmented into multiple protocol handlers that can independently process different communication standards. This allows the controller to selectively engage appropriate communication methods based on the connected equipment type, maintaining advanced control capabilities while supporting diverse equipment choices including legacy devices.
3Adaptability or versatility
If legacy HVAC equipment is used, then cost and interoperability are improved, but control precision and efficiency are reduced
Solution Approach 1:
The controller pre-configures optimized control strategies and setpoint schedules before operating the HVAC equipment. By calculating and preparing control parameters in advance based on building characteristics, weather forecasts, and occupancy patterns, the system achieves precise temperature control and energy optimization even when working with simple legacy equipment that lacks advanced control capabilities.
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.