Method for controlling air conditioner system
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Solution Overview
Problem
As the number of devices connected via wireless communication in air conditioning systems increases, communication quality may degrade, communication speed may be reduced, and communication interference may increase unless an optimal communication channel configuration is made, necessitating a method for wirelessly connected units to set an optimal communication channel.
Innovation Solution
The air conditioner system employs a method where outdoor and indoor units perform a channel scan across a sub-GHz frequency band, determining a channel with the lowest communication load to set as the optimal communication channel, allowing for efficient wireless communication within the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of wirelessly connected devices is increased, then the system functionality and coverage are improved, but communication quality degrades and interference increases
Solution Approach 1:
The system dynamically adjusts communication parameters by performing channel scans and automatically selecting optimal communication channels based on real-time environmental conditions. The controller adapts the communication frequency and channel configuration to maintain reliable wireless communication as devices are added or removed from the system.
Solution Approach 2:
The invention changes communication parameters such as frequency channel and transmission power based on detected environmental conditions. By scanning multiple channels and selecting the one with lowest interference, the system optimizes communication quality without requiring manual configuration, thus resolving the contradiction between system expansion and communication reliability.
2Reliability
If manual communication channel configuration is performed, then communication quality can be optimized, but installation complexity and time increase
Solution Approach 1:
The system performs self-configuration by automatically scanning available communication channels and selecting the optimal channel without user intervention. The controller autonomously detects interference levels and configures the wireless communication parameters, eliminating the need for manual setup while maintaining high communication quality.
Solution Approach 2:
The system performs preliminary channel scanning and selection during the initialization phase before actual operation begins. By pre-configuring the optimal communication channel in advance, the system avoids installation complexity while ensuring communication quality from the start of operation.
3Reliability
If channel scanning is performed across the entire frequency band, then optimal channel selection is improved, but communication setup time increases
Solution Approach 1:
The system performs a focused channel scan on a subset of relevant frequency bands rather than scanning the entire spectrum. By scanning only the sub-GHz band and selected channels within it, the system achieves sufficient channel selection accuracy while significantly reducing the time required compared to a complete frequency band scan.
Data Source
AI summary
A method for controlling an air conditioner system may include receiving, by one of an outdoor unit and a plurality of indoor units in a group, a command; transmitting, by the outdoor unit, a channel scan command to the plurality of indoor units; performing a channel scan by each of the outdoor unit and the plurality of indoor units; transmitting, by the plurality of indoor units, channel scan results to the outdoor unit; determining, by the outdoor unit, a channel to be used among a plurality of pre-set channels of a particular group based on a result of the channel scan performed by the outdoor unit and the channel scan results received from the plurality of indoor units; and outputting, by the outdoor unit, information on the channel to the plurality of indoor units. According to this method, an optimal wireless communication channel may be set.