Circuit device suitable for remote control of multi-split air conditioner

Abstract

The utility model discloses a circuit device suitable for remote control of a multi-split air conditioner, which comprises a plurality of wire controllers and a plurality of air conditioner control modules, and the plurality of air conditioner control modules are in one-to-one correspondence with the plurality of wire controllers; each air conditioner control module comprises an SOC module matched with an infrared transmitting tube and a gateway protocol, the SOC module is connected with the infrared transmitting tube through an MOS tube so as to control the infrared transmitting tube to transmit an infrared control signal, and each wire controller is provided with an infrared receiver so as to receive the infrared control signal transmitted by the infrared transmitting tube. By arranging the gateway and the air conditioner control module with matched communication protocols, the air conditioner control module can send a control signal to the infrared receiver of the wire controller through the infrared transmitting tube, and then the wire controller sends an air conditioner control signal to the air conditioner according to the control signal. Therefore, communication protocol butt joint of the gateway and various air conditioner manufacturers is avoided, intelligent transformation of the multi-split air conditioner can be achieved, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning control technical field especially suitable for circuit device of remote control of multi -connected machine air conditioning. BACKGROUND

[0002] At present, the existing air conditioner that most residences and enterprise companies have installed is many and cannot carry out remote intelligent control, needs to be reformed, and the line controller of multi -connected machine central air conditioning is generally based on bus system mode control, and different air conditioner manufacturers use different bus control protocols. The reform scheme on the market generally adopts centralized control mode, that is, an air conditioner is controlled by a gateway, which needs to be connected with the air conditioner manufacturer, or the communication protocol of the air conditioner manufacturer is cracked to make the gateway and the communication protocol of the air conditioner manufacturer connect.

[0003] However, for multi -connected machine air conditioning, because the air conditioner control protocols of different manufacturers are different, the hardware is different, when the original air conditioner is intelligently reformed, the protocol connection problem with the original air conditioner manufacturer is faced, which is laborious and time -consuming, and if the protocol cannot be connected, the upgrading and reform cannot be carried out. INVENTION CONTENTS

[0004] In order to solve the problem of connecting the protocol with the original air conditioner manufacturer when the existing technology is reformed to the multi -connected machine air conditioner, the utility model provides a kind of circuit device suitable for remote control of multi -connected machine air conditioning.

[0005] The utility model discloses a kind of circuit device suitable for remote control of multi -connected machine air conditioning, including multiple line controllers and multiple air conditioner control modules, multiple air conditioner control modules are one-to-one with multiple line controllers;Wherein, each air conditioner control module includes SOC module matched with infrared emitter tube and gateway protocol, the SOC module is connected with infrared emitter tube by MOS tube, to control infrared emitter tube to send infrared control signal, infrared receiver is provided on each line controller, to receive the infrared control signal sent by the infrared emitter tube.

[0006] In some embodiments, the data transmission line of the line controller is connected with the air conditioner and the air conditioner control module.

[0007] In some embodiments, the air conditioner control module further includes an operational amplifier module, a first triode, a second triode and an LDO module; the operational amplifier module is connected with the data transmission line of the line controller, the first triode is connected with the operational amplifier module, the second triode is connected with the first triode, the SOC module is connected with the first triode and the second triode; the input end of the LDO module is connected with the power supply voltage end, and the output end of the LDO module is connected with the first triode, the second triode, the SOC module and the infrared emitter tube.

[0008] In some embodiments, the first transistor and the second transistor are both NPN transistors; the air conditioner control module further comprises a jumper interface connected with a power voltage end and a data transmission line of the drive-by-wire controller; a third pin of the jumper interface is connected with a third pin of a second control chip of the operational amplifier module, a first pin of the jumper interface is connected with a fourth pin of a fifth control chip of the LDO module and the third pin of the second control chip of the operational amplifier module; a third pin of the fifth control chip of the LDO module is connected with a collector of the first transistor, a collector of the second transistor, a twenty-first pin of a fourth control chip of the SOC module and a positive electrode of the infrared emitter tube.

[0009] In some embodiments, a first pin of the second control chip is connected with a base of the first transistor and the ground, a second pin of the second control chip is grounded, and an emitter of the first transistor is grounded.

[0010] In some embodiments, the collector of the first transistor is connected with a seventh pin of the fourth control chip of the SOC module in addition to the third pin of the fifth control chip of the LDO module.

[0011] In some embodiments, the base of the second transistor is connected with the third pin of the fifth control chip of the LDO module, the collector of the first transistor and the ground, and the collector of the second transistor is connected with a ninth pin of the fourth control chip of the SOC module in addition to the third pin of the fifth control chip of the LDO module.

[0012] In some embodiments, the MOS transistor is an N-channel MOS transistor; a thirteenth pin of the fourth control chip of the SOC module is connected with a gate of the MOS transistor, a drain of the MOS transistor is connected with a negative electrode of the infrared emitter tube, and a source of the MOS transistor is grounded.

[0013] In some embodiments, the air conditioner control module further comprises a current limiting resistor, one end of the current limiting resistor is connected with the third pin of the fifth control chip of the LDO module, and the other end of the current limiting resistor is connected with the positive electrode of the infrared emitter tube.

[0014] In some embodiments, each of the infrared receivers is arranged adjacent to the infrared emitter tube of the control air conditioner module corresponding to the drive-by-wire controller.

[0015] The utility model discloses a beneficial effect: the utility model discloses the circuit device suitable for multi -connected machine air conditioner remote control of embodiment, through setting up the gateway and air conditioning control module that communication protocol has matched, and air conditioning control module can send control signal to the infrared receiver of line control ware through infrared emission tube, and line control ware again sends air conditioning control signal to air conditioning according to the control signal. Thus avoid the gateway and the communication protocol of various air conditioning manufacturers docking, namely can realize the intelligent reconstruction of multi -connected machine air conditioner, save time and effort. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the utility model embodiment technical scheme, below will to the drawing needed to use in the embodiment description simple introduction, obviously, below description in the drawing is some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 The circuit connection schematic diagram of the circuit device suitable for multi -connected machine air conditioner remote control provided by the utility model embodiment is provided.

[0018] Figure 2 The circuit diagram of the jumper interface and LDO module in the circuit device suitable for multi -connected machine air conditioner remote control provided by the utility model embodiment is provided.

[0019] Figure 3 The circuit diagram of the operational amplifier module, the first triode and the second triode part in the circuit device suitable for multi -connected machine air conditioner remote control provided by the utility model embodiment is provided.

[0020] Figure 4 The circuit diagram of the SOC module in the circuit device suitable for multi -connected machine air conditioner remote control provided by the utility model embodiment is provided.

[0021] Figure 5 The circuit diagram of the MOS tube and infrared emission tube part in the circuit device suitable for multi -connected machine air conditioner remote control provided by the utility model embodiment is provided.

[0022] Drawing reference: D1, infrared emission tube;Q1, first triode;Q4, second triode;JP1, jumper interface;U2, second control chip;U4, fourth control chip;U5, fifth control chip;R2, current limiting resistor;Q2, MOS tube. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0024] It should be understood that the terms "comprise" and "include" as used in the specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0025] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intervening elements. The terms "first", "second", "third" and the like are only for the convenience of describing the technical solutions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] It should also be understood that the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, unless otherwise clear from the context, the singular form "a", "an" and "the" is intended to include the plural form.

[0027] It should be further understood that the terms "and / or" used in the present application specification and the appended claims refer to any combination of one or more of the associated listed items and all possible combinations, and include these combinations.

[0028] Together with Figures 1 to 5 , wherein, Figure 1A circuit connection diagram of a circuit device for remote control of a multi-split air conditioner provided in an embodiment of this utility model; Figure 2 A circuit diagram of the jumper interface and LDO module in a circuit device for remote control of a multi-split air conditioner provided in this embodiment of the utility model; Figure 3 The circuit diagram of the operational amplifier module, the first transistor, and the second transistor in the circuit device for remote control of multi-split air conditioners provided in this embodiment of the utility model; Figure 4 A circuit diagram of the SOC module in a circuit device for remote control of a multi-split air conditioner provided in this embodiment of the present invention; Figure 5 The circuit diagram of the MOS transistor and infrared emitting diode in the circuit device for remote control of multi-split air conditioners provided in the embodiments of this utility model.

[0029] like Figure 1 and Figure 5 As shown, this utility model embodiment provides a circuit device suitable for remote control of multi-split air conditioners. It is applied to multi-split air conditioner systems that currently cannot be remotely controlled, to modify them and enable remote intelligent control. The circuit device for remote control of multi-split air conditioners may include multiple wired controllers and multiple air conditioner control modules, with each air conditioner control module corresponding to one of the multiple wired controllers. Each air conditioner control module includes an infrared transmitter D1 and a SOC module compatible with a gateway protocol. The SOC module is connected to the infrared transmitter D1 via a MOS transistor Q2 to control the infrared transmitter D1 to send infrared control signals. Each wired controller is equipped with an infrared receiver (not shown in the figure) to receive the infrared control signals sent by the infrared transmitter D1.

[0030] Specifically, the specific number of the plurality of wire controllers and the plurality of air conditioner control modules corresponds to the number of air conditioners in the multi-connected air conditioner system. Each wire controller is connected to an air conditioner (not shown in the figure) for data transmission between the wire controller and the air conditioner to control the switching of the air conditioner or to adjust the mode and parameters, etc. The plurality of air conditioner control modules correspond to the wire controllers one by one, that is, one air conditioner control module corresponds to one wire controller and one air conditioner. The connection line between the wire controller and the air conditioner can be 4 lines including VCC, GND, RX and TX lines, RX is used for receiving data, and TX line is used for sending data; the connection line can also be 3 lines including power line, ground line and RTX line, data transmission is on the same RTX line. The VCC voltage can be 12v or 5V. The air conditioner control module matches the protocol of the gateway, and the protocol of the gateway can be zigbee, Bluetooth and other communication protocols. The user can use a mobile terminal such as a mobile phone, a notebook computer, a smart watch, etc. which can install an application program, communicate with the air conditioner control module through the gateway, input remote control instructions to the air conditioner control module, and the SOC (System on Chip) module of the air conditioner control module receives the remote control instructions sent by the user, and sends corresponding control signals to the wire controller through the infrared emitter D1. The infrared receiver of the wire controller receives the control signal and sends the air conditioner control signal through the connection line between the wire controller and the air conditioner, so as to realize the remote control of the air conditioner by the user.

[0031] The existing scheme needs to be connected with the air conditioner manufacturer or to crack the communication protocol of the air conditioner manufacturer, which is high in cost, difficult to connect, and poor in stability. The circuit device for remote control of multi-connected air conditioner disclosed in the embodiment of the utility model avoids the connection of the gateway and the communication protocol of various air conditioner manufacturers, that is, the intelligent transformation of the multi-connected air conditioner can be realized, time and labor are saved, and the transformation cost is reduced.

[0032] As shown in Figure 1 In a specific embodiment, the data transmission line of the wire controller is connected with the air conditioner and the air conditioner control module at the same time.

[0033] Specifically, the wired controller retains its original local wired control function. The controller's display screen features touch-sensitive virtual buttons for sending commands to the air conditioner, such as power on / off, mode adjustment, and parameter adjustment. When the user directly controls the air conditioner via the wired controller, the controller simultaneously sends a signal to the air conditioner control module along with the data transmission line. Upon receiving this signal, the SOC module of the air conditioner control module communicates with the user's mobile terminal via the gateway, synchronizing the user's input commands on the wired controller to the user's mobile terminal. This allows the user to monitor the air conditioner's operation in real time via their mobile terminal. Users can see both their own remote control of the air conditioner via their mobile terminal and the control status of other users via the wired controller, improving the user experience. This embodiment does not require changing the original wired controller's control circuitry; simply connecting the air conditioner control module in parallel with the wired controller is sufficient.

[0034] In other embodiments, when a user directly controls the air conditioner via a wired controller, command input can also be achieved through mechanical buttons on the wired controller.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown ( Figure 1 The connection relationship between the LDO module and the first transistor Q1 and the second transistor Q4 is not shown in the diagram. Further reference is available. Figure 2 and Figure 3 In a specific embodiment, the air conditioning control module further includes an operational amplifier module, a first transistor Q1, a second transistor Q4, and an LDO module; the operational amplifier module is connected to the data transmission line of the wired controller, the first transistor Q1 is connected to the operational amplifier module, the second transistor Q4 is connected to the first transistor Q1, and the SOC module is connected to the first transistor Q1 and the second transistor Q4; the input terminal of the LDO module is connected to the power supply voltage terminal, and the output terminal of the LDO module is connected to the first transistor Q1, the second transistor Q4, the SOC module, and the infrared emitting diode D1.

[0036] The operational amplifier module can be used as a current follower, and its input impedance is infinite, which prevents the TX line signal of the drive-by-wire controller from being deteriorated after being connected to the air conditioner control module, and affects the data reception of the drive-by-wire controller and the air conditioner control module. The operational amplifier module supports high-voltage power input. The first transistor Q1 is mainly used for signal level conversion, which converts the high-voltage level signal output by the operational amplifier module into a 3.3v level signal. The second transistor is used as an inverter to keep the signal level input to the SOC module consistent with the signal level output by the operational amplifier module. The LDO (Low Dropout Regulator, low dropout regulator) module is mainly used for voltage reduction, which is used to reduce the high-level power supply voltage signal (such as 5V, 12V, 24V, etc.) to a 3.3v level signal, and input the 3.3v level signal to the first transistor Q1, the second transistor Q4, the SOC module, and the infrared emitter D1.

[0037] As shown in Figure 2 and Figure 3 In a specific embodiment, the first transistor Q1 and the second transistor Q4 are both NPN type transistors. The air conditioner control module further includes a jumper interface JP1, which is connected to the power supply voltage end and the data transmission line of the drive-by-wire controller. The third pin of the jumper interface JP1 is connected to the third pin of the second control chip U2 of the operational amplifier module. The first pin of the jumper interface JP1 is connected to the fourth pin of the fifth control chip U5 of the LDO module and the third pin of the second control chip U2 of the operational amplifier module. The third pin of the fifth control chip U5 of the LDO module is connected to the collector of the first transistor Q1, the collector of the second transistor Q4, the twenty-first pin of the fourth control chip U4 of the SOC module, and the positive electrode of the infrared emitter D1.

[0038] The first pin of the jumper interface JP1 is used as a level output pin, and the third pin of the jumper interface JP1 is used as a data transmission pin. The fourth pin of the fifth control chip U5 of the LDO module is used as a level input pin, and the third pin of the fifth control chip U5 is used as a level output pin. The third pin of the second control chip U2 of the operational amplifier module is used as a level input pin and a data reception pin.

[0039] As shown in Figure 2 and Figure 3 In a specific embodiment, the first pin of the second control chip U2 is connected to the base of the first transistor Q1 and the ground, and the second pin of the second control chip U2 is connected to the ground. The emitter of the first transistor Q1 is connected to the ground.

[0040] The first pin of the second control chip U2 is used as a level output pin, and the second pin of the second control chip U2 is used as a level input pin.

[0041] AsFigure 2 , Figure 3 and Figure 4 As shown, in a specific embodiment, the collector of the first transistor Q1 is connected to the third pin of the fifth control chip U5 of the LDO module, and also to the seventh pin of the fourth control chip U4 of the SOC module.

[0042] Among them, the seventh pin of the fourth control chip U4 serves as the first data receiving pin.

[0043] like Figure 2 , Figure 3 and Figure 4 As shown, in a specific embodiment, the base of the second transistor Q4 is simultaneously connected to the third pin of the fifth control chip U5 of the LDO module, the collector of the first transistor Q1, and ground. The collector of the second transistor Q4 is connected to the ninth pin of the fourth control chip U4 of the SOC module while being connected to the third pin of the fifth control chip U5 of the LDO module.

[0044] In this configuration, the emitter of the second transistor Q4 is grounded. Pin 9 of the fourth control chip U4 serves as the second data receiver pin. Thus, the SOC module can receive control signals sent to the air conditioner by the wired controller when an operation command is input. These operation commands can include on / off, mode adjustment, and parameter adjustment. The second control chip U2 of the SOC module can parse these control signals and synchronize them to the user's mobile device via the gateway, allowing the user to understand the control status of the air conditioner by other users through the wired controller. When the user directly controls the air conditioner through the wired controller, the wired controller sends a signal via the data transmission line, which is simultaneously transmitted to the SOC module of the air conditioner control module via jumper interface JP1, operational amplifier module, first transistor Q1, and second transistor Q4.

[0045] like Figure 3 , Figure 4 and Figure 5 As shown, in a specific embodiment, the MOS transistor Q2 is an N-channel MOS transistor Q2; the thirteenth pin of the fourth control chip U4 of the SOC module is connected to the gate of the MOS transistor Q2, the drain of the MOS transistor Q2 is connected to the negative terminal of the infrared emitting diode D1, and the source of the MOS transistor Q2 is grounded.

[0046] In this circuit, the positive terminal of infrared LED D1 is connected to the output terminal of the LDO module and ground. Pin 13 of the fourth control chip U4 serves as the infrared signal output pin. The fourth control chip U4 controls the gate level of MOSFET Q2 through the output infrared signal, thereby controlling the switching of MOSFET Q2 and, consequently, whether the circuit containing infrared LED D1 is on. This allows the SOC module to control infrared LED D1 to send infrared control signals to the infrared receiver of the wired controller. The infrared control protocol between infrared LED D1 and the infrared receiver can be pre-acquired using an infrared remote control.

[0047] like Figure 2 , Figure 4 and Figure 5 As shown, in a specific embodiment, the air conditioning control module further includes a current-limiting resistor R2. One end of the current-limiting resistor R2 is connected to the third pin of the fifth control chip U5 of the LDO module, and the other end is connected to the positive terminal of the infrared emitting tube D1.

[0048] In order to facilitate users to control the air conditioner via wired controllers, multiple wired controllers of a multi-split air conditioning system are usually installed side by side on the wall. The current-limiting resistor R2 is used to limit the current through the infrared emitting tube D1, thereby limiting the infrared control signal transmission power of the infrared emitting tube D1. This prevents the infrared control signal transmission power of the infrared emitting tube D1 from being too high, causing the infrared receivers of other wired controllers to receive the infrared control signal of the infrared emitting tube D1. This prevents the user from accidentally controlling air conditioner B or C when trying to remotely control air conditioner A, thus ensuring the user experience.

[0049] In a specific embodiment, each of the infrared receivers and the infrared emitting tube D1 of the control air conditioning module corresponding to the wired controller are arranged adjacent to each other.

[0050] For example, in the A wired controller used to control air conditioner A, the infrared receiver is placed adjacent to the infrared transmitter D1 in the air conditioner module A connected to the A wired controller. This ensures that the infrared receiver can receive the infrared control signal sent by the infrared transmitter D1 completely and accurately, avoiding control errors caused by incomplete or incorrect signal reception, thereby ensuring the user experience.

[0051] In conclusion, the circuit device for remote control of the multi-connected air conditioner provided by the embodiment of the present application can include multiple wire controllers and multiple air conditioner control modules, the multiple air conditioner control modules correspond to the multiple wire controllers one by one; wherein each air conditioner control module includes a SOC module matched with an infrared emitter D1 and a gateway protocol, the SOC module is connected with the infrared emitter D1 through a MOS tube Q2 to control the infrared emitter D1 to send an infrared control signal, and each wire controller is provided with an infrared receiver to receive the infrared control signal sent by the infrared emitter D1.

[0052] The user uses an application program of a mobile terminal, for example, a touch input, a voice input, sends a control instruction to the SOC module through a gateway, the SOC module controls the infrared emitter D1 to send a corresponding infrared control signal, and the wire controller can send a corresponding control signal to the air conditioner after receiving the infrared control signal, thereby completing remote control of the air conditioner.

[0053] The circuit device for remote control of the multi-connected air conditioner provided by the embodiment of the present application has at least the following advantages:

[0054] It is unnecessary to spend time and effort to perform protocol docking with air conditioner manufacturers;

[0055] Convenient control: the air conditioner can be remotely controlled through a mobile terminal app;

[0056] The original control circuit and installation mode do not need to be changed, the air conditioner control module can be directly connected in parallel to the original wire controller for use, and the transformation cost is low.

[0057] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A circuit device suitable for remote control of multi-split air conditioners, characterized in that, The system includes multiple wired controllers and multiple air conditioning control modules, with each air conditioning control module corresponding to one of the multiple wired controllers. Each air conditioning control module includes an infrared transmitter and a SOC module that matches the gateway protocol. The SOC module is connected to the infrared transmitter via a MOS transistor to control the infrared transmitter to send infrared control signals. Each wired controller is equipped with an infrared receiver to receive the infrared control signals sent by the infrared transmitter.

2. The circuit device for remote control of multi-split air conditioners according to claim 1, characterized in that, The data transmission line of the wired controller is connected to the air conditioner and also to the air conditioner control module.

3. The circuit device for remote control of multi-split air conditioners according to claim 2, characterized in that, The air conditioning control module further includes an operational amplifier module, a first transistor, a second transistor, and an LDO module; the operational amplifier module is connected to the data transmission line of the wired controller, the first transistor is connected to the operational amplifier module, the second transistor is connected to the first transistor, and the SOC module is connected to both the first and second transistors; the input terminal of the LDO module is connected to the power supply voltage terminal, and the output terminal of the LDO module is connected to the first transistor, the second transistor, the SOC module, and the infrared emitting diode.

4. The circuit device for remote control of multi-split air conditioners according to claim 3, characterized in that, Both the first transistor and the second transistor are NPN transistors. The air conditioning control module also includes a jumper interface, which is connected to the power supply voltage terminal and the data transmission line of the wired controller. The third pin of the jumper interface is connected to the third pin of the second control chip of the operational amplifier module, and the first pin of the jumper interface is connected to the fourth pin of the fifth control chip of the LDO module and the third pin of the second control chip of the operational amplifier module. The third pin of the fifth control chip of the LDO module is connected to the collector of the first transistor, the collector of the second transistor, the twenty-first pin of the fourth control chip of the SOC module, and the positive terminal of the infrared emitting diode.

5. The circuit device for remote control of multi-split air conditioners according to claim 4, characterized in that, The first pin of the second control chip is connected to the base of the first transistor and ground, the second pin of the second control chip is grounded, and the emitter of the first transistor is grounded.

6. The circuit device for remote control of multi-split air conditioners according to claim 5, characterized in that, The collector of the first transistor is connected to the third pin of the fifth control chip of the LDO module, and also to the seventh pin of the fourth control chip of the SOC module.

7. The circuit device for remote control of multi-split air conditioners according to claim 6, characterized in that, The base of the second transistor is simultaneously connected to the third pin of the fifth control chip of the LDO module, the collector of the first transistor, and ground. The collector of the second transistor is connected to the third pin of the fifth control chip of the LDO module, and also to the ninth pin of the fourth control chip of the SOC module.

8. The circuit device for remote control of multi-split air conditioners according to claim 7, characterized in that, The MOS transistor is an N-channel MOS transistor; the thirteenth pin of the fourth control chip of the SOC module is connected to the gate of the MOS transistor, the drain of the MOS transistor is connected to the negative terminal of the infrared emitting diode, and the source of the MOS transistor is grounded.

9. The circuit device for remote control of multi-split air conditioners according to claim 8, characterized in that, The air conditioning control module also includes a current-limiting resistor, one end of which is connected to the third pin of the fifth control chip of the LDO module, and the other end is connected to the positive terminal of the infrared emitting diode.

10. The circuit device for remote control of multi-split air conditioners according to claim 1, characterized in that, Each of the infrared receivers and the infrared transmitter of the air conditioning control module corresponding to the wired controller are arranged adjacent to each other.

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