Protection method and protection system for air conditioner wire controller

Abstract

The invention provides a protection method and a protection system for an air conditioner wire controller. The method comprises the following steps: 1, supplying power to the wire controller, and monitoring the return signal of the wire controller in a running state in real time; 2, when the returned signal is abnormal for 60 seconds, stopping supplying power to the wire controller, sending a fault to a user mobile phone, and ending the monitoring, and when the return signal is normal, continuing to monitor the voltage of the protection end; and 3, when the voltage of the protection end exceeds a critical value, stopping supplying power to the wire controller, recovering the power supply after 100ms, then returning to the step 1, and when the voltage of the protection end does not exceed the critical value, directly returning to the step 1. According to the protection method, power supply can be directly stopped when the wire controller is short-circuited, and a fault signal is sent, so that the damage of the short circuit of the wire controller to the main controller is completely avoided. In addition, the wire controller and the main control board can be effectively protected when the voltage of the power grid fluctuates, and the self-recovery function of the wire controller and the main control board greatly improves the convenience degree of using products by users.

Description

technical field [0001] The invention relates to the field of air conditioner wire controllers, in particular to a protection method and protection system for an air conditioner wire controller. Background technique [0002] At present, as an auxiliary device for controlling air conditioners, wire controllers are widely used in the market due to their unique advantages. At the same time, there are many after-sales problems and cumbersome solutions. Because the wire controller is directly connected to the main control board of the indoor unit, a problem with the wire controller may even damage the main control board of the indoor unit. [0003] With the continuous development of the air-conditioning industry, people's demand for air-conditioning is increasingly diversified. In the field of modern air-conditioning, multi-connected air conditioners have their own advantages such as convenient installation, flexible use, and random adjustment. Usually, a multi-connected air-cond...

AI Technical Summary

Problems solved by technology

The technical solution of the wire controller overvoltage protection in the prior art: monitor the protection terminal voltage of the wire controller, if it is greater than 0.36V, stop the power supply to the wire controller, and restore the power supply after a preset time, mainly to deal with the fluctuation of the power grid. When there is a short-circuit problem in the circuit breaker, because the stop power supply time is too short, only 100ms, and the circuit is repeatedly disconnected, the overload operation time of the resistance will be too long, and the resistance of the main control board will burn out due to the high temperature, which cannot provide effective protection.

That is, the overvoltage protection scheme of the prior art cannot solve the short circuit protection problem of the wire controller

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