HVAC Controller Startup Using Auxiliary Backup Application Data
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Solution Overview
Problem
HVAC systems face delays and potential improper operation during controller replacement or failure due to missing unit information, requiring manual intervention and risking incorrect model identification, which can lead to error codes and feature set loading issues.
Innovation Solution
A method where main controller application information, including model specific data and feature sets, is copied to an auxiliary controller during manufacturing, allowing the system to query and retrieve this information automatically upon power-up if not stored on the main controller, 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 on the main system controller, then device complexity is reduced, but reliability deteriorates due to potential data loss during controller replacement or failure
Solution Approach 1:
The patent implements a copying mechanism where main controller application information is duplicated from the main system controller to an auxiliary controller during manufacturing. This creates a backup copy that ensures system reliability when the main controller fails or is replaced, while maintaining relatively simple device architecture through automated copying processes
Solution Approach 2:
The patent applies preliminary action by pre-copying the main controller application information to the auxiliary controller during the manufacturing process. This advance preparation ensures that backup data is already available before any potential controller failure occurs, eliminating the need for manual data transfer during maintenance or replacement scenarios
2Productivity
If manual intervention is required to transfer controller information, then ease of manufacture is improved, but loss of time increases during controller replacement
Solution Approach 1:
The patent implements self-service functionality where the system automatically queries the auxiliary controller for backup information and initiates the data transfer process without requiring manual intervention. The controller replacement process becomes self-sufficient, with the system independently retrieving and loading the necessary application information from the auxiliary controller
Solution Approach 2:
The patent employs feedback mechanisms where the main system controller automatically queries the auxiliary controller to determine whether backup information is available. This feedback loop enables the system to dynamically assess data availability and initiate appropriate recovery actions, reducing both manual intervention requirements and system startup delays
3Reliability
If external hardware is used to store controller information, then reliability is improved, but device complexity and construction costs increase
Solution Approach 1:
The patent merges the data storage function into the existing auxiliary controller component that is already part of the HVAC system architecture. Instead of adding separate external storage hardware, the auxiliary controller serves dual purposes: its original function plus backup storage for main controller application information, thereby improving reliability without increasing overall device complexity or construction costs
Data Source
AI summary
The disclosure provides, in one aspect, a method of starting a HVAC system is disclosed. In one embodiment, the method 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.