HVAC Auxiliary Controller Backup for Main Controller Replacement
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Solution Overview
Problem
HVAC systems face delays and improper operation due to the loss of unit-specific information during main controller replacement, requiring manual intervention and potential incorrect model information entry, which can lead to error codes and feature set loading issues.
Innovation Solution
A method where main controller application information is stored in both the main and auxiliary controllers during manufacturing, allowing the auxiliary controller to provide a backup copy to the main controller upon initialization, eliminating the need for external hardware and manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If main controller application information is stored only in the main system controller, then device complexity is reduced, but reliability deteriorates due to information loss during controller replacement
Solution Approach 1:
The patent creates a backup copy of the main controller application information and stores it in an auxiliary controller. This copying mechanism ensures that when the main controller is replaced, the application information can be retrieved from the auxiliary controller, thereby maintaining reliability without requiring complex external storage systems.
Solution Approach 2:
The auxiliary controller serves as an intermediary storage device between the main controller and external storage media. It holds a backup copy of the application information and can transfer it to a replacement main controller, simplifying the overall system architecture while ensuring information preservation.
2Ease of operation
If manual intervention is required to enter model information during controller replacement, then ease of operation deteriorates, but manufacturing precision can be maintained
Solution Approach 1:
The system enables self-service during controller replacement by automatically transferring application information from the auxiliary controller to the replacement main controller. This eliminates the need for manual data entry, making the operation easier while ensuring accurate model information transfer without human error.
Solution Approach 2:
The auxiliary controller is pre-loaded with a backup copy of the main controller application information during system setup or manufacturing. This preliminary action ensures that when controller replacement is needed, the information is already available and can be automatically transferred, eliminating manual intervention and ensuring accuracy.
3Reliability
If external hardware is used to store and transfer controller information, then reliability improves, but device complexity increases
Solution Approach 1:
The patent merges the backup storage function with the existing auxiliary controller in the HVAC system. Instead of adding separate external hardware, the auxiliary controller is configured to store and transfer application information, thereby improving reliability while avoiding additional system complexity.
Solution Approach 2:
The auxiliary controller is given multiple functions: it controls auxiliary HVAC components and simultaneously serves as a backup storage device for main controller application information. This multi-functionality eliminates the need for dedicated external backup hardware, maintaining system simplicity while ensuring information preservation.
Data Source
AI summary
The disclosure provides a method of starting a heating, ventilation and air conditioning (HVAC) system, a method of manufacturing a HVAC system, a HVAC system, and an integrated controller thereof. In one embodiment, the method of starting includes: (1) receiving an initiation signal at a main system controller of the HVAC system, (2) determining if main controller application information associated with the main system controller is stored thereon, (3) querying an auxiliary controller of the HVAC system when determining the main controller application information is not stored on the main system controller, (4) sending the main controller application information to the main system controller from the auxiliary controller when the auxiliary controller includes the main controller application information and (5) initiating the HVAC system based on the initiation signal and employing the main controller application information sent to the main system controller from the auxiliary controller.