Method for operating a heat cool system during a sensor failure and a system thereof
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional HVAC systems face issues with sensor failures leading to system shutdown, particularly in extreme temperatures, posing safety risks and lack of protection for system components.
Innovation Solution
A method and system that utilize a controller to determine virtual sensor values based on predetermined values and a multi-sensor failure matrix, allowing the HVAC system to continue operating even in the event of single or multi-sensor failure by calculating virtual values for failed sensors using interlock value matrices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the system stops operation upon sensor failure, then system safety is improved, but system reliability and uptime deteriorate
Solution Approach 1:
The controller stores predetermined values for sensors before operation begins. When a sensor fails, the controller retrieves and uses these pre-stored values to maintain system operation, avoiding shutdown while ensuring safety through validated predetermined parameters
Solution Approach 2:
The controller creates virtual sensor values by copying and using predetermined values stored during system initialization. This virtual sensor data allows the control system to continue operating with accurate enough information to maintain safety without requiring physical sensor functionality
2Reliability
If the system continues operation without sensor protection, then system reliability is improved, but component protection deteriorates
Solution Approach 1:
The controller continuously monitors sensor status and provides feedback to determine whether to use predetermined values or real-time sensor data. This feedback mechanism ensures components are protected by switching to predetermined values when sensors fail, while maintaining normal operation when sensors function properly
Solution Approach 2:
The controller dynamically changes the parameter source for sensor data - switching between real-time sensor readings and predetermined stored values based on sensor operational status. This parameter switching ensures component protection is activated only when necessary while maintaining system reliability
3Measurement precision
If multiple sensors are used for monitoring, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The controller serves multiple functions: it acts as both a control unit and a data storage unit by storing predetermined sensor values internally. This multi-functionality eliminates the need for separate backup storage systems, maintaining measurement precision while reducing overall device complexity
Solution Approach 2:
The patent merges the control unit and predetermined value storage into a single integrated controller. This combination reduces the number of separate components needed while maintaining the ability to provide accurate sensor data through predetermined values when sensors fail
Data Source
AI summary
The present invention discloses a method for operating a heat cool system during a sensor failure and system thereof. The method comprises determining, by controller, in the event of single or multi-sensor failure, a virtual value of at least a failed sensor based on a plurality of first and second predetermined values; determining the heat cool system run status based on a multi-sensor failure matrix in the event of multi-sensor failure; and obtaining, determining a real-time virtual value of at least the failed sensor based on an interlock value matrix for running heat and cool refrigeration cycles without stopping the heat cool system.