Method and Apparatus for Controlling Fresh Air System, and Air-Conditioning Unit

Abstract

A method and apparatus for controlling a fresh air system, and an air conditioning unit. The method includes acquiring the opening state of an air valve; and detecting a voltage signal of a photoelectric switch. The voltage signal includes at least the number of changes in a level, and a final level state; and determining, according to the voltage signal, whether the air valve has been fully opened/closed, and controlling the operation of a fresh air system according to a determination result.

1 . A method for controlling a fresh air system having an air valve equipped with a photoelectric switch, comprising:
 obtaining a switch state of the air valve;   detecting a voltage signal of the photoelectric switch, wherein the voltage signal comprises at least a number of times of level changes and a final level state; and   determining whether the air valve is switched in place according to the voltage signal, and controlling an operation of the fresh air system according to a determination result.   
     
     
         2 . The method for controlling the fresh air system according to  claim 1 , wherein the determining whether the air valve is switched in place according to the voltage signal comprises:
 if the number of times of level changes is greater than or equal to  1  and the final level state is low, determining that the air valve is switched in place, otherwise, determining that the air valve has a fault.   
     
     
         3 . The method for controlling the fresh air system according to  claim 2 , wherein the air valve comprises at least a fresh air valve and a return air valve, and the photoelectric switch comprises at least a first photoelectric switch disposed on the fresh air valve and a second photoelectric switch disposed on the return air valve. 
     
     
         4 . The method for controlling the fresh air system according to  claim 3 , wherein the obtaining a switch state of the air valve comprises:
 determining an operating mode of the fresh air system; and   determining a switch state of the fresh air valve and a switch state of the return air valve according to the operating mode, wherein the operating mode comprises at least an external circulation mode in which the fresh air valve and the return air valve are both in an open state.   
     
     
         5 . The method for controlling the fresh air system according to  claim 4 , wherein the determining an operating mode of the fresh air system comprises:
 detecting an operating state of the fresh air system, wherein the operating state at least comprises a power-on state; and   determining the operating mode of the fresh air system according to the operating state of the fresh air system, wherein the operating mode is the external circulation mode in a case where the operating state is the power-on state.   
     
     
         6 . The method for controlling the fresh air system according to  claim 3 , wherein the controlling an operation of the fresh air system according to a determination result comprises:
 in a case where the fresh air valve and return air valve are switched in place, obtaining an environmental parameter of an indoor environment where the fresh air system is located; and   determining the operating mode of the fresh air system according to the environmental parameter, and controlling switch states of the fresh air valve and the return air valve according to the operating mode, wherein the operating mode further comprises at least an internal circulation mode in which the fresh air valve and the return air valve are both in a closed state.   
     
     
         7 . The method for controlling the fresh air system according to  claim 3 , wherein the controlling an operation of the fresh air system according to a determination result comprises: controlling the fresh air system to enter a standby mode or shutdown mode in a case where the fresh air valve or the return air valve has a fault. 
     
     
         8 . The method for controlling the fresh air system according to  claim 6 , further comprising: in a case where the operating mode is the internal circulation mode, after the controlling switch states of the fresh air valve and the return air valve according to the operating mode,
 detecting a voltage signal of the first photoelectric switch and a voltage signal of the second photoelectric switch; and   determining whether the fresh air valve and the return air valve are switched in place according to the voltage signal of the first photoelectric switch and the voltage signal of the second photoelectric switch.   
     
     
         9 . The method for controlling the fresh air system according to  claim 5 , further comprising: in a case where the operating state is the power-on state, resetting the fresh air valve and the return air valve to a closed state before the determining the operating mode of the fresh air system according the operating state. 
     
     
         10 . (canceled) 
     
     
         11 . An air conditioning unit, comprising: a fresh air system and an apparatus for controlling the fresh air system, wherein the apparatus is configured to:
 obtain a switch state of the air valve;   detect a voltage signal of the photoelectric switch, wherein the voltage signal comprise at least a number of times of level changes and a final level state; and   determine whether the air valve is switched in place according to the voltage signal, and control an operation of the fresh air system according to a determination result.   
     
     
         12 . The air conditioner unit according to  claim 11 , wherein the fresh air system is equipped with an air valve having a photoelectric switch. 
     
     
         13 . A non-transitory computer-readable storage medium stored thereon a computer program that, when executed by a processor, causes the processor to implement the method for controlling the fresh air system according to  claim 1 . 
     
     
         14 . An apparatus for controlling a fresh air system, comprising:
 a processor; and   a memory coupled to the processor for storing instructions that, when executed by the processor, cause the processor to;
 obtain a switch state of the air valve; 
 detect a voltage signal of the photoelectric switch, wherein the voltage signal comprise at least a number of times of level changes and a final level state; and 
 determine whether the air valve is switched in place according to the voltage signal, and control operation of the fresh air system according to a determination result. 
   
     
     
         15 . (canceled) 
     
     
         16 . The apparatus for controlling the fresh air system the according to  claim 14 , wherein the determining whether the air valve is switched in place according to the voltage signal comprises:
 if the number of times of level changes is greater than or equal to 1 and the final level state is low, determining that the air valve is switched in place, otherwise, determining that the air valve has a fault.   
     
     
         17 . The apparatus for controlling the fresh air system according to  claim 16 , wherein the air valve comprises at least a fresh air valve and a return air valve, and the photoelectric switch comprises at least a first photoelectric switch disposed on the fresh air valve and a second photoelectric switch disposed on the return air valve. 
     
     
         18 . The apparatus for controlling the fresh air system according to  claim 17 , wherein the obtaining a switch state of the air valve comprises:
 determining an operating mode of the fresh air system;   determining a switch state of the fresh air valve and a switch state of the return air valve according to the operating mode, wherein the operating mode comprises at least an external circulation mode in which the fresh air valve and the return air valve are both in an open state.   
     
     
         19 . The apparatus for controlling the fresh air system according to  claim 18 , wherein the determining an operating mode of the fresh air system comprises:
 detecting an operating state of the fresh air system, wherein the operating state at least comprises a power-on state; and   determining the operating mode of the fresh air system according to the operating state of the fresh air system, wherein the operating mode is the external circulation mode in a case where the operating state is the power-on state.   
     
     
         20 . The apparatus for controlling the fresh air system according to  claim 17 , wherein the controlling an operation of the fresh air system according to a determination result comprises:
 in a case where the fresh air valve and return air valve are switched in place, obtaining an environmental parameter of an indoor environment where the fresh air system is located; and   determining the operating mode of the fresh air system according to the environmental parameter, and controlling switch states of the fresh air valve and the return air valve according to the operating mode, wherein the operating mode further comprises at least an internal circulation mode in which the fresh air valve and the return air valve are both in a closed state.   
     
     
         21 . The apparatus for controlling the fresh air system according to  claim 17 , wherein the controlling operation of the fresh air system according to a determination result comprises: controlling the fresh air system to enter a standby mode or shutdown mode in a case where the fresh air valve or the return air valve has a fault.