Control method of communication system and air conditioner

By detecting and switching the electrical parameters of the signal lines between the master module and the slave module, the problem of reverse connection of signal lines in multi-unit systems is solved, achieving automatic correction and improving the reliability and security of the communication system.

CN116743621BActive Publication Date: 2026-04-14GREE ELECTRIC APPLIANCE INC OF ZHUHAI
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Patent Information

Application Number
CN202310643204.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-01
Publication Date
2026-04-14
Estimated Expiration
2043-06-01

AI Technical Summary

Technical Problem

In existing multi-unit systems, the signal lines between the master and slave units are easily reversed, leading to communication failures that cannot be automatically corrected.

Method used

By detecting the electrical parameters on the signal lines of the master module and slave module, especially the voltage parameters of the RX signal on the slave module, it can be determined whether the signal lines are reversed. If they are reversed, the communication signal path is switched so that the signal transmitted on the signal line is opposite to that when reversed, thus correcting the signal line reversal problem.

Benefits of technology

It automatically corrects reverse connection of signal lines, ensures normal communication between the master module and the slave module, and triggers alarms when necessary, thereby improving the reliability and security of the system.

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Abstract

The application discloses a control method of a communication system and an air conditioner. The communication system comprises a host module and at least one slave module connected with the host module. The control method comprises the following steps: detecting an electrical parameter on a signal line connecting the host module and the slave module when the communication system is in a normal communication state; judging whether the signal line is reversely connected according to the electrical parameter; and switching a communication signal on the signal line if the signal line is reversely connected. Compared with the prior art, the application can detect the electrical parameter on the RX signal of the slave module during the communication between the host module and the slave module, judge whether the signal line is reversely connected according to the detected electrical parameter, switch the TX signal and the RX signal when the signal line is reversely connected, and automatically correct the communication problem caused by the reverse connection of the signal line.
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