Control method and control apparatus for communication device, and communication system and storage medium
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Solution Overview
Problem
Existing air-conditioning communication systems face challenges due to the simultaneous presence of power and data on the communication bus, requiring the use of inductors to block DC power during data interaction, which increases the size and complexity of the controller and affects communication distance and anti-interference ability.
Innovation Solution
A control method that periodically outputs first and second level signals to the communication bus, allowing data connections to be established when the level signal is at the first level and power supply connections when it is at the second level, thereby avoiding simultaneous data transmission and power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inductors are used to block DC power during data interaction on the communication bus, then data communication can be achieved, but the volume of the controller increases and driving ability decreases
Solution Approach 1:
The patent implements time-division multiplexing where the communication bus alternates between power supply mode and data communication mode through periodic control of the level signal. During data communication periods, power supply is blocked; during power supply periods, data communication is suspended. This eliminates the need for inductors while maintaining both functions.
2Power
If inductors are used to block AC signals during power supply on the communication bus, then power supply capability is improved, but the design size increases and affects communication distance and anti-interference ability
Solution Approach 1:
The system uses periodic switching between power supply mode and communication mode through level signal control. When power supply is needed, the bus is configured for power transmission; when communication is needed, it switches to data mode. This time-division approach eliminates inductors and reduces system complexity while maintaining both power supply and communication capabilities.
3Adaptability or versatility
If capacitors and inductors are used to simultaneously support power and data on the communication bus, then both functions are available, but the controller volume is increased and driving ability is reduced
Solution Approach 1:
The patent employs time-division multiplexing where the communication bus periodically switches between power supply function and data communication function through level signal control. This eliminates the need for both capacitors and inductors, reducing controller volume while maintaining dual functionality through temporal separation of operations.
Data Source
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AI summary
A control method and control apparatus for a communication device, and a communication system and a storage medium. The control method for a communication device comprises: periodically outputting a first level signal and a second level signal to a communication bus, wherein on the basis of a level signal of the communication bus being a first level signal, a second communication device establishes a data connection with a first communication device, and on the basis of the level signal of the communication bus being a second level signal, the second communication device establishes a power supply connection with the first communication device. A data connection and a power supply connection do not occur at the same time, and therefore, compared with a traditional Homebus, a communication bus to which the control method is applied does not need to be provided with an inductor, such that the volume of a controller is reduced, the influence of the inductor on the driving capability of an air conditioner communication system and on the communication distance and anti-interference capability of the whole air conditioner communication system is reduced, and the cost of the controller is also reduced.