Communication control method and apparatus for air conditioner, and communication system and readable storage medium
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems in air conditioners suffer from signal distortion due to disturbances in inductance, capacitance, resistance, and signal reflection, leading to incorrect data readings and reduced communication quality, particularly in long communication lines.
Innovation Solution
A communication control method that involves acquiring voltage signals on a bus, determining voltage slope-rising and falling edges, performing time comparisons, and matching the signals with data models in a library to restore accurate data, while ensuring the voltage and slope conditions meet specific thresholds to minimize interference effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the communication rate is increased to improve communication efficiency, then productivity is improved, but the signal transmission becomes slower due to line resistance and capacitance, causing communication quality to deteriorate
Solution Approach 1:
The patent changes the detection parameter from voltage threshold to voltage slope (rate of change). By detecting the slope of voltage change rather than absolute voltage levels, the system can accurately identify signal transitions even when signal transmission is slow due to long communication lines. This parameter transformation resolves the contradiction by making detection independent of signal transmission speed.
2Ease of operation
If a fixed voltage threshold is used for signal detection to simplify the detection process, then ease of operation is improved, but measurement precision deteriorates when signal distortion occurs due to inductance, capacitance, and resistance disturbances
Solution Approach 1:
The patent transforms the detection parameter from static voltage threshold to dynamic voltage slope. By measuring the rate of voltage change (slope) rather than absolute voltage, the system maintains simple detection operations while achieving high precision even under signal distortion. The slope detection method is robust against noise and distortion because it focuses on the transition characteristic rather than absolute levels.
3Device complexity
If voltage threshold detection is used to simplify the communication interface, then device complexity is reduced, but reliability deteriorates when signal distortion causes incorrect data reading
Solution Approach 1:
The patent changes the detection parameter from voltage threshold to voltage slope, enabling the simple communication interface to reliably distinguish signal transitions even when distortion occurs. The slope detection method identifies the direction and rate of voltage change, making it immune to absolute voltage shifts caused by distortion, thus maintaining high reliability without increasing interface complexity.
4Adaptability or versatility
If the communication line length is increased to extend the communication range, then adaptability is improved, but signal distortion increases due to resistance, capacitance, and reflection, causing measurement precision to deteriorate
Solution Approach 1:
The patent transforms detection from voltage threshold to voltage slope, which remains effective even over long communication lines. The slope detection method focuses on the transition characteristic (rate of change) rather than absolute voltage levels, making it insensitive to voltage drops and distortion caused by long line resistance and capacitance. This enables extended communication range while maintaining detection precision.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided are a communication control method and apparatus for an air conditioner, and a communication system and a readable storage medium. The communication control method for an air conditioner comprises: acquiring a voltage signal on a bus; determining a voltage slope-rising edge and a voltage slope-falling edge in the voltage signal based on that the voltage signal satisfies a comparison condition of a power supply voltage of a communication device and a reference voltage on the bus; performing time comparison on the voltage signal to obtain a processed voltage signal based on that the voltage slope-rising edge and the voltage slope-falling edge satisfy a slope comparison condition; determining, from a data model library, a target data model that is consistent with the processed voltage signal; and outputting data information corresponding to the target data model. The voltage signal on the bus is identified by means of model comparison, such that the occurrence of the phenomenon where signal data obtained by means of detection is abnormal when the inductance, capacitance, resistance and signal reflection, etc. in an air conditioner and other communication systems are disturbed is reduced.