Method and device for controlling communication compensation, and air conditioner
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Solution Overview
Problem
The existing multi-split air conditioning systems face unstable communication due to severe signal attenuation caused by long distances between the outdoor and indoor units, leading to interference and instability in Homebus communication.
Innovation Solution
A method and apparatus for controlling communication compensation, which determine a length class of the communication link based on the time length of pulse data and apply a compensation scheme to prevent attenuation, improving communication stability by automatically adjusting for signal degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the outdoor unit is connected to more than 32 indoor units through Homebus communication, then the system capacity and connectivity are improved, but the communication distance increases causing severe signal attenuation and instability
Solution Approach 1:
The communication link is segmented into multiple length classes (first length class and second length class) based on transmission distance. Different compensation schemes are applied to different segments, allowing the system to handle both short and long distance communications effectively. This segmentation resolves the contradiction by enabling the system to maintain reliability across varying communication distances while supporting expanded connectivity.
Solution Approach 2:
The patent changes the parameter of communication compensation based on the detected length class of the communication link. By dynamically adjusting compensation parameters according to transmission distance, the system maintains communication stability regardless of whether the outdoor unit is connected to 32 or more than 128 indoor units, thus resolving the contradiction between system adaptability and communication reliability.
2Productivity
If the communication distance between outdoor unit and terminal indoor unit increases, then more indoor units can be connected, but signal attenuation becomes severe causing timing jitter and communication errors
Solution Approach 1:
The system performs preliminary detection of the communication link length class before actual data transmission. Based on this preliminary detection, appropriate compensation schemes are pre-configured to counteract signal attenuation effects. This preliminary action ensures that even in long-distance communication scenarios with many connected units, the signal accuracy is maintained through proactive compensation measures.
Solution Approach 2:
The patent implements a feedback mechanism where the communication link length class is detected based on pulse data transmission time, and this feedback information is used to select appropriate compensation schemes. The system continuously monitors and adjusts compensation based on the actual communication conditions, ensuring signal accuracy is maintained regardless of the number of connected indoor units or communication distance.
3Extent of automation
If pulse data transmission time is used to determine communication link length, then automatic distance detection is achieved, but communication compensation complexity increases
Solution Approach 1:
Instead of implementing continuous or excessive compensation adjustments, the patent divides the communication link into a finite number of length classes (at least two classes). This partial classification approach provides sufficient automation for distance detection while keeping the compensation control complexity manageable by limiting the number of discrete compensation schemes needed.
Data Source
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AI summary
The present disclosure relates to a method for controlling communication compensation, comprising: determining a length class of a communication link according to a time length of pulse data transmitted on the communication link; and determining a compensation scheme for communication compensation according to the length class of the communication link. In the invention, a length class of a communication link determined according to a time length of pulse data transmitted on the communication link is used to determine a compensation scheme for communication compensation so as to perform time compensation on data, thereby preventing attenuation caused by an excessively long communication distance, and improving the stability of long-distance communication performed by means of Homebus. Also disclosed are an apparatus for controlling communication compensation, and an air conditioner.