A signal conversion control method and valve box device

Abstract

An embodiment of the present invention provides a signal conversion control method and a valve box device. The method includes: determining the control type indicated by the target control signal based on the target control signal sent by the control system; if the control type is a compressor control type, determining the compression ratio corresponding to the target control signal, and controlling the first air conditioning device based on the compression ratio; if the control type is a temperature control type, determining the target temperature corresponding to the target control signal, and controlling the first air conditioning device based on the target temperature and the ambient temperature. The present invention can improve the compatibility of the control system and the air conditioning device by determining the control type indicated by the target control signal and controlling the air conditioning device based on target control signals of different control types.

Description

Technical Field

[0001] The present invention relates to the technical field of signal conversion, and in particular to a signal conversion control method and a valve box device. Background Art

[0002] When configuring the air conditioning system of a building, different types of equipment are often used in combination. When combining the building control system with different air conditioning equipment, there will be a problem of control interface mismatch, resulting in the control signal sent by the building control system being unable to control the air conditioning equipment. Therefore, it is very necessary to improve the compatibility of the building control system and air conditioning equipment through signal conversion control. Summary of the invention

[0003] The purpose of the embodiment of the present invention is to provide a signal conversion control method and a valve box device, which can improve the compatibility of the control system and the air conditioning equipment. The specific technical solution is as follows:

[0004] The present invention provides a signal conversion control method, which is applied to a valve box device, and the method comprises:

[0005] Based on the target control signal sent by the control system, determining the control type indicated by the target control signal;

[0006] If the control type is a compressor control type, determining a compression ratio corresponding to the target control signal, and controlling the first air conditioning device based on the compression ratio;

[0007] If the control type is a temperature control type, a target temperature corresponding to the target control signal is determined, and the first air conditioning device is controlled based on the target temperature and the ambient temperature.

[0008] Optionally, determining the compression ratio corresponding to the target control signal includes:

[0009] Obtaining a voltage analog signal of the target control signal;

[0010] Based on the corresponding relationship between the voltage range and the compression ratio, the compression ratio corresponding to the voltage range to which the voltage simulation signal belongs is obtained.

[0011] Optionally, determining a target temperature corresponding to the target control signal includes:

[0012] Obtaining a voltage analog signal and a digital signal of the target control signal;

[0013] Determine a device control mode corresponding to the digital signal of the target control signal;

[0014] When the device control mode is a cooling mode, based on the correspondence between the voltage range and the cooling set temperature, obtaining a first target temperature corresponding to the voltage range to which the voltage simulation signal belongs;

[0015] When the device control mode is the heating mode, based on the corresponding relationship between the voltage range and the heating set temperature, a second target temperature corresponding to the voltage range to which the voltage simulation signal belongs is obtained.

[0016] Optionally, also include:

[0017] If the control type is an air supply volume control type, a wind speed corresponding to the target control signal is determined, and the second air conditioning device is controlled based on the wind speed.

[0018] Optionally, also include:

[0019] If the target control signal includes a digital signal and a mode signal, then when the digital signal indicates that the first air-conditioning device is turned on, the first air-conditioning device is controlled based on the mode signal; wherein the mode signal is any one of a signal representing a cooling mode, a signal representing a heating mode, and a signal representing a dehumidification mode.

[0020] Optionally, the determining, based on the target control signal sent by the control system, the control type indicated by the target control signal specifically includes:

[0021] In the case where the control system is a building control system, and the target control signal sent by the building control system at least includes a voltage analog signal, the control type indicated by the target control signal is determined.

[0022] Optionally, also include:

[0023] When the control system is a valve box control system, the first air conditioning device is controlled based on a first air conditioning device control signal sent by the valve box control system, and the second air conditioning device is controlled based on a second air conditioning device control signal sent by the valve box control system;

[0024] The first air conditioning equipment control signal is any one of a power on / off signal, a temperature signal, a cooling signal, a heating signal and a dehumidification signal; and the second air conditioning equipment control signal is an air supply signal.

[0025] The present invention also provides a valve box device, comprising:

[0026] Dial switches and controllers;

[0027] The code dial is connected to the controller;

[0028] The code dial is used for adjusting multiple modes, and the controller determines the control type indicated by the target control signal sent by the control system based on the mode adjusted by the code dial;

[0029] The controller is used to determine a compression ratio corresponding to the target control signal when the control type is a compressor control type, and control the first air conditioning device based on the compression ratio;

[0030] The controller is further configured to determine a target temperature corresponding to the target control signal when the control type is a temperature control type, and control the first air conditioning device based on the target temperature and the ambient temperature.

[0031] Optionally, also include:

[0032] Analog signal input port and digital signal input port;

[0033] The analog signal input port and the digital signal input port are both connected to the control system;

[0034] The voltage analog signal sent by the control system is transmitted to the controller through the analog signal input port, and the digital signal sent by the control system is transmitted to the controller through the digital signal input port.

[0035] Optionally, the number of the analog signal ports is 1, the number of the digital signal ports is 5, and different digital signal ports transmit digital signals representing different air conditioning equipment control modes.

[0036] A signal conversion control method and a valve box device provided by an embodiment of the present invention determine the control type indicated by the target control signal based on the target control signal sent by the control system; if the control type is a compressor control type, the compression ratio corresponding to the target control signal is determined, and the first air conditioning device is controlled based on the compression ratio; if the control type is a temperature control type, the target temperature corresponding to the target control signal is determined, and the first air conditioning device is controlled based on the target temperature and the ambient temperature. The present invention can improve the compatibility of the control system and the air conditioning device by determining the control type indicated by the target control signal and controlling the air conditioning device based on target control signals of different control types.

[0037] Of course, it is not necessary to achieve all of the advantages described above at the same time to implement any product or method of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A flow chart of a signal conversion control method provided by an embodiment of the present invention;

[0040] Figure 2 A flow chart of another signal conversion control method provided by an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the structure of a valve box device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The present invention provides a signal conversion control method, which is applied to a valve box device, such as Figure 1 As shown, the signal conversion control method includes:

[0044] Step 101: Based on a target control signal sent by a control system, determine a control type indicated by the target control signal.

[0045] The control system may be a building control system or a valve box control system. If the control system is a building control system, the building control system may send an analog signal and a digital signal. The analog signal may be a voltage analog signal, and the voltage range may be 0-10 V. The signal conversion control method provided by the present invention is applied to a valve box device. A code dial is provided on the valve box device. The code dial may provide multiple mode selections. The control types indicated by the target control signal in different modes are different.

[0046] As an optional implementation, based on the target control signal sent by the control system, determining the control type indicated by the target control signal specifically includes:

[0047] When the control system is a building control system, and the target control signal sent by the building control system includes at least a voltage analog signal, a control type indicated by the target control signal is determined.

[0048] Step 102: If the control type is a compressor control type, determine a compression ratio corresponding to the target control signal, and control the first air conditioning device based on the compression ratio.

[0049] Optionally, the first air conditioning device is an air-conditioning outdoor unit.

[0050] As an optional implementation, determining a compression ratio corresponding to the target control signal includes:

[0051] Obtaining a voltage analog signal of a target control signal;

[0052] Based on the correspondence between the voltage range and the compression ratio, the compression ratio corresponding to the voltage range to which the voltage simulation signal belongs is obtained.

[0053] Among the multiple modes provided by the dial encoder, the first mode is when the building control system transmits voltage analog signals and digital signals, corresponding to the target pressure set by the building control system. The target pressure can be a cooling target pressure and a heating target pressure. The target pressure can directly control air conditioning equipment, such as an air conditioner outdoor unit for cooling or heating. In this mode, the compression ratio corresponding to the target control signal can be determined. The target pressure set by the building control system can be achieved by controlling the air conditioner outdoor unit through the compression ratio.

[0054] The voltage range of the voltage analog signal generated by the building control system can be 0-10V. 0-10V is divided into multiple intervals, each voltage interval corresponds to a compression ratio, and different voltage intervals correspond to different compression ratios. In practical applications, the corresponding relationship between the voltage range and the compression ratio can be shown in Table 1.

[0055] Table 1 Correspondence between voltage range and compression ratio

[0056]

[0057]

[0058] In the first mode provided by the encoder, the building control system can input 0-10V voltage analog signals and digital signals to the valve box device, and the digital signals may include cooling signals, heating signals, air supply signals and dehumidification signals. When the voltage range of the voltage analog signal in the target control signal sent by the building control system is 0-0.5V, the compression ratio is 0%, and the air conditioner outdoor unit is in the off state; when the voltage range of the voltage analog signal in the target control signal sent by the building control system is 0.6-10V, the air conditioner outdoor unit is in the on state.

[0059] Step 103: If the control type is a temperature control type, determine a target temperature corresponding to the target control signal, and control the first air conditioning device based on the target temperature and the ambient temperature.

[0060] As an optional implementation, determining a target temperature corresponding to the target control signal includes:

[0061] Obtaining a voltage analog signal and a digital signal of a target control signal;

[0062] Determine the device control mode corresponding to the digital signal of the target control signal;

[0063] When the device control mode is the cooling mode, based on the corresponding relationship between the voltage range and the cooling set temperature, a first target temperature corresponding to the voltage range to which the voltage simulation signal belongs is obtained;

[0064] When the device control mode is the heating mode, based on the corresponding relationship between the voltage range and the heating set temperature, the second target temperature corresponding to the voltage range to which the voltage simulation signal belongs is obtained.

[0065] Among the multiple modes provided by the dial encoder, the second mode is when the building control system transmits voltage analog signals and digital signals, corresponding to the target temperature set by the building control system, the target temperature and ambient temperature can be used to control the air conditioner outdoor unit for cooling or heating. In this mode, the target temperature corresponding to the target control signal can be determined, and the target temperature set by the building control system can be achieved by controlling the air conditioner outdoor unit through the target temperature and ambient temperature.

[0066] The voltage range of the voltage simulation signal generated by the building control system can be 0-10V, and 0-10V is divided into multiple intervals, each voltage interval corresponds to a first target temperature, and each voltage interval corresponds to a second target temperature. The first target temperature and the second target temperature corresponding to the same voltage interval can be the same. Optionally, the first target temperature can be a cooling set temperature, and the second target temperature can be a heating set temperature. In practical applications, the corresponding relationship between the voltage range and the set temperature can be shown in Table 2.

[0067] Table 2 Correspondence between voltage range and set temperature

[0068]

[0069] In the second mode provided by the dialer, the building control system can input 0-10V voltage analog signals and digital signals to the valve box device. The digital signals may include cooling signals, heating signals, air supply signals, and dehumidification signals. The difference from the first mode provided by the dialer is that the digital signal includes a power on / off signal in addition to the above four signals, and the 0-10V voltage analog signal corresponds to the target temperature set by the building control system.

[0070] In an optional embodiment, the signal conversion control method provided by the present invention is as follows: Figure 2As shown, the method includes:

[0071] Step 201: Based on the target control signal sent by the control system, determine the control type indicated by the target control signal.

[0072] Step 201 and Figure 1 The step 101 shown is similar and will not be described again here.

[0073] Step 202: If the control type is a compressor control type, determine a compression ratio corresponding to the target control signal, and control the first air conditioning device based on the compression ratio.

[0074] Step 202 and Figure 1 The step 102 shown is similar and will not be described again here.

[0075] Step 203: If the control type is a temperature control type, determine a target temperature corresponding to the target control signal, and control the first air conditioning device based on the target temperature and the ambient temperature.

[0076] Step 202 and Figure 1 The step 103 shown is similar and will not be described again.

[0077] Step 204: If the control type is the air supply volume control type, determine the wind speed corresponding to the target control signal, and control the second air conditioning device based on the wind speed.

[0078] Optionally, the second air conditioning device is a fresh air fan. When the mode provided by the encoder is the first mode or the second mode, when the digital signal in the target control signal transmitted by the building control system corresponds to the air supply mode, the wind speed corresponding to the target control signal can be determined. The output end of the valve box device can have multiple ports, which output wind speeds of different gears respectively. If the wind speed has three gears of high, medium and low, the corresponding valve box device has three output ports, which can control the wind speed of the fresh air fan when supplying air.

[0079] As an optional embodiment, if the target control signal includes a digital signal and a mode signal, then when the digital signal indicates that the first air-conditioning device is turned on, the first air-conditioning device is controlled based on the mode signal; wherein the mode signal is any one of a signal representing a cooling mode, a signal representing a heating mode, and a signal representing a dehumidification mode.

[0080] In this embodiment, the mode provided by the dialer is the third mode, and the third mode is that the building control system transmits a digital signal and a mode signal. The digital signal can be a 0 / 1 digital signal, and the mode signal can be a combination signal of 0 and 1. Among them, the 0 / 1 digital signal corresponds to the on / off signal of the first air conditioning device. Optionally, the first air conditioning device is an air conditioner outdoor unit. If the digital signal is 0, it corresponds to the shutdown signal of the air conditioner outdoor unit. If the digital signal is 1, it corresponds to the power-on signal of the air conditioner outdoor unit. Under the condition that the digital signal is 1, the air conditioner outdoor unit can be controlled based on the mode signal. If the mode signal is a signal representing a cooling mode, a signal representing a heating mode, or a signal representing a dehumidification mode, the air conditioner outdoor unit can be controlled according to the target compression ratio. Optionally, the target compression ratio can be 100%.

[0081] As an optional implementation, the signal conversion control method provided by the present invention further includes:

[0082] When the control system is a valve box control system, the first air conditioning device is controlled based on a first air conditioning device control signal sent by the valve box control system, and the second air conditioning device is controlled based on a second air conditioning device control signal sent by the valve box control system.

[0083] The first air conditioning equipment control signal is any one of a power on / off signal, a temperature signal, a cooling signal, a heating signal and a dehumidification signal; and the second air conditioning equipment control signal is an air supply signal.

[0084] In this embodiment, the mode provided by the dial is the fourth mode, and the fourth mode is a mode in which the valve box control system controls the first air conditioning device and the second air conditioning device. Optionally, the first air conditioning device can be an air conditioner outdoor unit, and the second air conditioning device can be a fresh air fan. When the air conditioner outdoor unit control signal sent by the valve box control system is a cooling signal, a heating signal, or a dehumidification signal, the air conditioner outdoor unit starts after receiving the signal and sends a start-up signal, which is transmitted to the fresh air fan through the valve box device, so that the fresh air fan starts.

[0085] The present invention also provides a valve box device, such as Figure 3 As shown, the valve box device includes: a code dial 301 and a controller 302. The code dial is connected to the controller.

[0086] The code dial is used for adjusting multiple modes, and the controller determines the control type indicated by the target control signal sent by the control system based on the mode adjusted by the code dial.

[0087] The controller is used to determine a compression ratio corresponding to the target control signal when the control type is a compressor control type, and control the first air conditioning device based on the compression ratio.

[0088] The controller is also used to determine a target temperature corresponding to the target control signal when the control type is a temperature control type, and control the first air conditioning device based on the target temperature and the ambient temperature.

[0089] Optionally, the valve box device further includes: an analog signal input port and a digital signal input port. Both the analog signal input port and the digital signal input port are connected to the control system; the voltage analog signal sent by the control system is transmitted to the controller through the analog signal input port, and the digital signal sent by the control system is transmitted to the controller through the digital signal input port.

[0090] Among them, the number of analog signal ports is 1, the number of digital signal ports is 5, and different digital signal ports transmit digital signals representing different air conditioning equipment control modes.

[0091] The control system is a building control system. When the first air conditioning device is an outdoor air conditioner, different building control systems output 0-10V voltage analog signals that can correspond to the capacity output of the outdoor air conditioner or the target set temperature. In addition, the building control system outputs a digital value of 0 indicating that the outdoor air conditioner is off, and 1 indicating that the outdoor air conditioner is on.

[0092] The code dialer of the present invention can provide multiple mode selections. The control types indicated by the template control signal in different modes are different. The four modes can be switched by code dialing.

[0093] In the first mode of the dialer, that is, when the building control system transmits voltage analog signals and digital signals, the target pressure set by the building control system is corresponding. This mode uses 1 analog signal port and 4 digital signal ports. The signals corresponding to these four digital signal ports are cooling signal, heating signal, air supply signal and dehumidification signal respectively. The building control system is connected to the air conditioner outdoor unit and the fresh air fan respectively through the valve box. Of course, the building control system can be connected to the air conditioner outdoor unit through the valve box, and the fresh air fan is directly connected to the building control system. In this mode, the controller can obtain the compression ratio corresponding to the voltage range to which the voltage analog signal belongs based on the corresponding relationship between the voltage range and the compression ratio. By controlling the air conditioner outdoor unit through the compression ratio, the target pressure set by the building control system can be achieved.

[0094] In the second mode of the dialer, that is, when the building control system transmits voltage analog signals and digital signals, the target temperature set by the building control system is corresponding. This mode uses 1 analog signal port and 5 digital signal ports. The signals corresponding to these five digital signal ports are cooling signal, heating signal, air supply signal, dehumidification signal and switch signal. The building control system is connected to the air conditioner outdoor unit and the fresh air fan through the valve box. Of course, the building control system can be connected to the air conditioner outdoor unit through the valve box, and the fresh air fan is directly connected to the building control system. In this mode, the controller can determine the device control mode corresponding to the digital signal of the target control signal; when the device control mode is cooling mode, based on the correspondence between the voltage range and the cooling set temperature, the first target temperature corresponding to the voltage range to which the voltage analog signal belongs is obtained; when the device control mode is heating mode, based on the correspondence between the voltage range and the heating set temperature, the second target temperature corresponding to the voltage range to which the voltage analog signal belongs is obtained. Of course, when the device control mode is dehumidification mode, based on the correspondence between the voltage range and the dehumidification set temperature, the third target temperature corresponding to the voltage range to which the voltage analog signal belongs can be obtained.

[0095] In the third mode of the dialer, that is, the third mode is that the building control system transmits a digital signal and a mode signal, the digital signal can be a 0 / 1 digital signal, and the mode signal can be a combination signal of 0 and 1. Among them, the 0 / 1 digital signal corresponds to the on / off signal of the air conditioner outdoor unit. The building control system is connected to the air conditioner outdoor unit and the fresh air fan respectively through the valve box. Of course, the building control system can be connected to the air conditioner outdoor unit through the valve box, while the fresh air fan is directly connected to the building control system. In this mode, the controller can control the air conditioner outdoor unit based on the mode signal when the digital signal indicates that the air conditioner outdoor unit is turned on; wherein the mode signal is any one of a signal representing a cooling mode, a signal representing a heating mode, and a signal representing a dehumidification mode.

[0096] In the fourth mode of the dialer, that is, the mode in which the valve box control system controls the first air conditioning device and the second air conditioning device. The valve box control system is connected to the air conditioner outdoor unit and the fresh air fan through the valve box. When the air conditioner outdoor unit control signal sent by the valve box control system is a cooling signal, a heating signal, or a dehumidification signal, the air conditioner outdoor unit starts after receiving the signal and sends a start-up signal, which is transmitted to the fresh air fan through the valve box device, so that the fresh air fan starts.

[0097] The valve box device provided by the present invention only requires one 0-10V analog input port and 5 digital signal ports. Different ports correspond to different controls of air conditioning equipment, and the compatibility of the control system and the air conditioning equipment is achieved by selecting the dial mode, avoiding the problem that the control signal sent by the building control system cannot control the air conditioning equipment.

[0098] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0099] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. It should also be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0100] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0101] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A signal conversion control method, characterized in that: Applied to a valve box device, a dial is provided on the valve box device, and the dial can provide multiple mode selections. The control types indicated by the target control signal in different modes are different. The control system is compatible with the air conditioning equipment by selecting the dial mode. The method includes: Based on the target control signal sent by the control system, determining the control type indicated by the target control signal; If the control type is a compressor control type, determining a compression ratio corresponding to the target control signal, and controlling the first air conditioning device based on the compression ratio; If the control type is a temperature control type, determining a target temperature corresponding to the target control signal, and controlling the first air conditioning device based on the target temperature and the ambient temperature; If the control type is an air supply volume control type, determining a wind speed corresponding to the target control signal, and controlling the second air conditioning device based on the wind speed; When the control system is a valve box control system, the first air conditioning device is controlled based on a first air conditioning device control signal sent by the valve box control system, and the second air conditioning device is controlled based on a second air conditioning device control signal sent by the valve box control system; Among them, the first air conditioning equipment control signal is any one of a power on / off signal, a temperature signal, a cooling signal, a heating signal and a dehumidification signal; the second air conditioning equipment control signal is an air supply signal, the first air conditioning equipment is an air conditioner outdoor unit, and the second air conditioning equipment is a fresh air fan.

2. The signal conversion control method according to claim 1, characterized in that: The determining of the compression ratio corresponding to the target control signal comprises: Obtaining a voltage analog signal of the target control signal; Based on the corresponding relationship between the voltage range and the compression ratio, the compression ratio corresponding to the voltage range to which the voltage simulation signal belongs is obtained.

3. The signal conversion control method according to claim 1, characterized in that: The determining a target temperature corresponding to the target control signal comprises: Obtaining a voltage analog signal and a digital signal of the target control signal; Determine a device control mode corresponding to the digital signal of the target control signal; When the device control mode is a cooling mode, based on the correspondence between the voltage range and the cooling set temperature, obtaining a first target temperature corresponding to the voltage range to which the voltage simulation signal belongs; When the device control mode is the heating mode, based on the corresponding relationship between the voltage range and the heating set temperature, a second target temperature corresponding to the voltage range to which the voltage simulation signal belongs is obtained.

4. The signal conversion control method according to claim 1, characterized in that: Also includes: If the target control signal includes a digital signal and a mode signal, then when the digital signal indicates that the first air-conditioning device is turned on, the first air-conditioning device is controlled based on the mode signal; wherein the mode signal is any one of a signal representing a cooling mode, a signal representing a heating mode, and a signal representing a dehumidification mode.

5. The signal conversion control method according to claim 1, characterized in that: The determining, based on the target control signal sent by the control system, the control type indicated by the target control signal specifically includes: In the case where the control system is a building control system, and the target control signal sent by the building control system at least includes a voltage analog signal, the control type indicated by the target control signal is determined.

6. A valve box device, characterized in that: A dial is provided on the valve box device, which can provide multiple mode selections. The control type indicated by the target control signal in different modes is different. The control system is compatible with the air conditioning equipment through the selection of the dial mode, including: Dial switches and controllers; The code dial is connected to the controller; The code dial is used for adjusting multiple modes, and the controller determines the control type indicated by the target control signal sent by the control system based on the mode adjusted by the code dial; The controller is used to determine a compression ratio corresponding to the target control signal when the control type is a compressor control type, and control the first air conditioning device based on the compression ratio; The controller is further configured to determine a target temperature corresponding to the target control signal when the control type is a temperature control type, and control the first air conditioning device based on the target temperature and the ambient temperature; If the control type is an air supply volume control type, determining a wind speed corresponding to the target control signal, and controlling the second air conditioning device based on the wind speed; Wherein, when the control system is a valve box control system, the first air conditioning device is controlled based on a first air conditioning device control signal sent by the valve box control system, and the second air conditioning device is controlled based on a second air conditioning device control signal sent by the valve box control system; Among them, the first air conditioning equipment control signal is any one of a power on / off signal, a temperature signal, a cooling signal, a heating signal and a dehumidification signal; the second air conditioning equipment control signal is an air supply signal, the first air conditioning equipment is an air conditioner outdoor unit, and the second air conditioning equipment is a fresh air fan.

7. The valve box device according to claim 6, characterized in that: Also includes: Analog signal input port and digital signal input port; The analog signal input port and the digital signal input port are both connected to the control system; The voltage analog signal sent by the control system is transmitted to the controller through the analog signal input port, and the digital signal sent by the control system is transmitted to the controller through the digital signal input port.

8. The valve box device according to claim 7, characterized in that: The number of the analog signal input ports is 1, the number of the digital signal input ports is 5, and different digital signal input ports transmit digital signals representing different air conditioning equipment control modes.

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