Air conditioning system and its communication method

Abstract

The invention discloses an air conditioning system and a communication method of the air conditioning system. The air conditioning system comprises an indoor unit and an outdoor unit. The indoor unit comprises a first wireless communication module. The outdoor unit comprises a second wireless communication module. The second wireless communication module is in communication with the first wireless communication module. One of the indoor unit and the outdoor unit is a host. The other one of the indoor unit and the outdoor unit is a slave. The host and the slave complete handshake through one of at least one shared channel. One of multiple work channels is selected by the host to be used as the work channel between the host and the slave, the work channel is transmitted to the slave from one of the shared channel, and therefore the host and the slave conduct communication through the selected work channel. By the adoption of the air conditioning system and a communication method of the air conditioning system, wireless communication between the indoor unit and the outdoor unit of the air conditioner is achieved, the problems that when wire communication is adopted, efficiency is low, the fault rate is high, and energy is wasted are solved, and the problem of channel disturbance caused during wireless communication is also solved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioning system and a communication method for the air conditioning system. Background technique [0002] At present, most indoor and outdoor units of air conditioners are connected by wires, such as figure 1 As shown, the indoor unit of the air conditioner and the outdoor unit of the air conditioner are connected by wires through power lines and communication lines, and in order to save connection lines, the signal is superimposed on the neutral line of the AC power line. In order to achieve AC-DC isolation, a high-voltage optocoupler must be used. The power supply part is stepped down by AC voltage resistance and capacitance, which requires relatively high withstand voltage of components, resulting in unnecessary heat loss and waste of energy. During the installation process, the live wire, neutral wire, ground wire, and signal wire are required to be conn...

AI Technical Summary

Problems solved by technology

However, there is a problem: when this channel is interfered, the air conditioner cannot communicate

And the same type of product usually chooses the same channel for communication. When there are many users using the same product nearby, air conditioners will also conflict with each other. There is a problem of channel occupancy for wireless communication, that is, there is a problem of channel interference for wireless communication.

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