HVAC Controller Wire Detection for Automatic System Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing HVAC systems lack efficient control mechanisms that can effectively utilize temperature signals from multiple sensors to optimize heating, cooling, and ventilation operations, leading to suboptimal comfort and energy usage within buildings.
Innovation Solution
The development of an HVAC controller that communicates with the HVAC system through field wires, utilizing a double pole relay and control circuitry to adjust operations based on temperature sensors, and includes wire detection circuits to identify HVAC system configurations and potential wiring errors, enabling precise control and optimization of heating, cooling, and ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wire detection circuits are added to detect field wire connections, then system reliability and configuration accuracy are improved, but device complexity increases
Solution Approach 1:
The patent replaces manual wire connection verification with automated electrical detection. Wire sensing circuits electrically detect whether field wires are properly connected to input terminals, substituting manual inspection and testing with automated electrical measurement. This resolves the contradiction by providing reliable wire connection verification through electrical fields rather than mechanical or manual methods.
Solution Approach 2:
The HVAC controller performs self-verification of its own wiring configuration through integrated wire sensing circuits. The system automatically detects wire connections, identifies system type (heat pump vs. conventional), and configures operation without external intervention. This self-service capability improves reliability while the integration into existing controller architecture minimizes added complexity.
2Ease of operation
If multiple temperature sensors are utilized for HVAC control, then comfort level and energy efficiency are improved, but control system complexity increases
Solution Approach 1:
The control circuitry is designed to universally handle multiple temperature sensors through standardized signal processing. The same control logic processes temperature signals from various sensors (indoor, outdoor, remote) to determine HVAC operation, making the system adaptable to different sensor configurations without requiring separate control paths for each sensor type.
Solution Approach 2:
The patent divides the temperature sensing function across multiple independent sensors placed in different locations (indoor environment, outdoor environment, remote zones). Each sensor independently measures local temperature, and the control system integrates these segmented measurements to make comprehensive HVAC control decisions, improving comfort while distributing system complexity across multiple simple sensing elements.
3Adaptability or versatility
If wire sensing circuits are implemented to detect HVAC system configuration, then adaptability and automatic configuration are improved, but manufacturing complexity increases
Solution Approach 1:
The patent replaces manual system configuration and wiring verification with automated electrical detection. Wire sensing circuits automatically detect the presence and configuration of field wires, enabling the system to adapt to different HVAC configurations (heat pump, conventional heating, cooling only) without manual programming. This substitution of manual configuration with automated detection improves adaptability while the use of standard electrical sensing techniques keeps manufacturing complexity manageable.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for enhanced control of HVAC systems, improving comfort levels and energy efficiency by accurately responding to temperature signals and system configurations, reducing energy waste and enhancing user interface capabilities.
Implementation Method 1
a first wire sensing circuit operably coupled with the first input terminal, wherein when the double pole relay is the open state, the first wire sensing circuit is configured to electrically detect when the first field wire is electrically coupled with the first input terminal
Data Source
AI summary
An HVAC controller includes a first input terminal configured to be electrically coupled with a first field wire and a second input terminal configured to be electrically coupled with a second field wire, and a double pole relay including two input terminals and two output terminals. Control circuitry is operably coupled to the temperature sensor and the double pole relay and is configured to determine whether the first field wire is electrically coupled with the first input terminal and whether the second field wire is electrically coupled with the second input terminal.