An interface multiplexing system and method for an air-conditioning controller

Abstract

The invention discloses an interface multiplexing system of an air conditioner controller. The interface multiplexing system comprises an air conditioner controller and a protection switch, wherein the air conditioner controller is provided with a thermal bulb interface for connecting an air conditioner thermal bulb, and the thermal bulb interface comprises two connecting ends; the protection switch and the air conditioner thermal bulb are connected in series between the two connecting ends of the thermal bulb interface. The interface sharing system of the air conditioner controller of the invention can multiplex the air conditioner thermal bulb interface. The invention also provides an interface multiplex method for the air conditioner controller.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an interface multiplexing system and method for an air conditioner controller. Background technique [0002] At the beginning of the development of the air-conditioning controller, according to the system design, there are corresponding high-voltage protection switch interfaces. Each switching value and analog value must have an interface on the controller board; for example, if the system has a high-voltage protection switch, the control board must have an interface for the high-voltage protection switch. circuit, the main board judges whether it is in a protection state by detecting whether the switch is closed. [0003] However, some air conditioner controllers did not reserve corresponding protection switch interfaces on the controller board because the corresponding systems did not have switch requirements such as high protection voltage, low voltage protection, and overload...

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Problems solved by technology

[0003] However, some air-conditioning controllers do not have corresponding protection switch interfaces reserved in the controller board because the corresponding system does not have high protection voltage, low voltage protection, overload protection and other switch requirements in the early stage of development.

For example, a controller board currently has 10 switch interfaces, and all of them have been used. If you need to add another high-voltage switch interface, you need to develop a derivative development to add a high-voltage switch in the later stage, and there will be no interface problem. You need to change the hardware circuit to realize it, which will increase the cost.

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