An air conditioning system

Abstract

The embodiment of the application provides an air conditioning system, and relates to the technical field of electrical appliances.The air conditioning system sets the pin of a main control chip into an output level adjustable mode to facilitate function perfection.The air conditioning system comprises a first bus, a second bus and a controller;the controller comprises a main control chip;the main control chip comprises a first pin and a second pin;the first pin is electrically connected with the first bus, and the second pin is electrically connected with the second bus.A level conversion circuit is electrically connected with a logic control module, and also electrically connected with a first voltage end and a second voltage end;an output end of the level conversion circuit is electrically connected with the first pin or the second pin;the logic control module is configured to output a control signal, and the level conversion circuit is configured to output a voltage signal of the first voltage end to the pin electrically connected with the level conversion circuit or output a voltage signal of the second voltage end to the pin electrically connected with the level conversion circuit under the control of the control signal.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and more particularly to an air conditioning system. Background Technology

[0002] With the development of science and technology, air conditioning is becoming more and more common, and more and more people's daily lives are closely related to air conditioning.

[0003] Currently, the central air conditioning industry commonly uses home bus communication for communication between indoor and outdoor units, between the wired controller and the indoor unit, and between outdoor units. This communication circuit utilizes a communication chip, a communication protocol conversion chip, such as the 1192 communication chip. Because each indoor unit, outdoor unit, or wired controller in a central air conditioning system needs to communicate, the demand for this chip is enormous, and its high unit price hinders further promotion of air conditioning systems. If the main control chip has built-in home bus communication functionality, its output voltage needs to be adjusted. However, the communication pins of the main control chip cannot be arbitrarily adjusted, which is detrimental to the development of subsequent new functions. Summary of the Invention

[0004] This invention provides an air conditioning system that reduces costs by disassembling the functions of the communication chip into the main control chip and additional circuitry.

[0005] The aforementioned air conditioning system includes: a first bus, a second bus, and a controller; the controller includes an indoor unit, an outdoor unit, and a wired controller; the controller includes: a main control chip; the main control chip includes: a first pin and a second pin; the first pin is electrically connected to the first bus, and the second pin is electrically connected to the second bus.

[0006] The main control chip includes: a first output module and a second output module; the first output module is electrically connected to the first pin, and the second output module is electrically connected to the second pin; at least one of the first output module and the second output module includes: a logic control module and a level conversion circuit.

[0007] The level conversion circuit is electrically connected to the logic control module and also electrically connected to the first voltage terminal and the second voltage terminal; the output terminal of the level conversion circuit is electrically connected to the first pin or the second pin; the logic control module is configured to output a control signal, and the level conversion circuit is configured to, under the control of the control signal, output the voltage signal of the first voltage terminal to the pin it is electrically connected to, or output the voltage signal of the second voltage terminal to the pin it is electrically connected to.

[0008] Based on the above technical solutions, some embodiments of the air conditioning system provided in this application improve the communication function of the main control chip by setting the pins of the main control chip to an adjustable output level mode. At the same time, the circuitry added to the main control chip further ensures its safe operation.

[0009] In some embodiments, the logic control module includes a first control terminal and a second control terminal; the first control terminal is configured to output a first control signal, and the second control terminal is configured to output a second control signal; the level conversion circuit includes a first sub-circuit and a second sub-circuit; the first sub-circuit is electrically connected to the first control terminal, the first voltage terminal and the output terminal; the second sub-circuit is electrically connected to the second control terminal, the second voltage terminal and the output terminal.

[0010] The logic control module is configured to output a first control signal with an on level and a second control signal with an off level to control the first sub-circuit to turn on and the second sub-circuit to turn off; the first sub-circuit is configured to transmit the voltage signal of the first voltage terminal to the output terminal.

[0011] The logic control module is further configured to output a first control signal with a cutoff level and a second control signal with an on level to control the first sub-circuit to turn off and control the second sub-circuit to turn on. The second sub-circuit is configured to transmit the voltage signal of the second voltage terminal to the output terminal.

[0012] In some embodiments, the first sub-circuit includes: a first transistor; the control electrode of the first transistor is electrically connected to the first control terminal, the first electrode of the first transistor is electrically connected to the first voltage terminal, and the second electrode of the first transistor is electrically connected to the output terminal.

[0013] In some embodiments, the second sub-circuit includes: a second transistor; the control electrode of the second transistor is electrically connected to the second control terminal, the first electrode of the second transistor is electrically connected to the output terminal, and the second electrode of the second transistor is electrically connected to the second voltage terminal.

[0014] In some embodiments, the logic control module is configured to output a control signal, and the level conversion circuit is further configured to output a set voltage signal to a pin electrically connected thereto under the control of the control signal, wherein the voltage of the set voltage signal is any voltage between the voltage of the first voltage terminal and the voltage of the second voltage terminal.

[0015] In some embodiments, the logic control module further includes a third control terminal configured to output a third control signal; the level conversion circuit further includes a third sub-circuit, a first voltage divider sub-circuit, and a second voltage divider circuit.

[0016] The first voltage divider circuit is electrically connected between the first voltage terminal and the first sub-circuit; the first terminal of the second voltage divider circuit is electrically connected to the first sub-circuit and the output terminal; the third sub-circuit is electrically connected to the third control terminal, the second voltage terminal, and the second terminal of the second voltage divider circuit.

[0017] The logic control module is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, to control the first sub-circuit and the third sub-circuit to turn on, and to control the second sub-circuit to turn off; the level conversion circuit is configured to output the set voltage signal to the output terminal.

[0018] In some embodiments, the third sub-circuit includes: a third transistor; the control electrode of the third transistor is electrically connected to the third control terminal, the first electrode of the third transistor is electrically connected to the second terminal of the second voltage divider circuit, and the second electrode of the third transistor is electrically connected to the second voltage terminal.

[0019] In some embodiments, the first sub-circuit includes: a first transistor; a first voltage divider circuit including a first resistor, and a second voltage divider circuit including a second resistor; a first terminal of the first resistor is electrically connected to the first voltage terminal, and a second terminal of the first resistor is electrically connected to the first electrode of the first transistor; a first terminal of the second resistor is electrically connected to the second electrode of the first transistor, and a second terminal of the second resistor is electrically connected to the first electrode of the third transistor.

[0020] In some embodiments, the first resistor and / or the second resistor are adjustable resistors. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0022] Figure 1 A schematic diagram of the composition of an air conditioning system provided in the prior art;

[0023] Figure 2 This is a schematic diagram of the composition of an air conditioning system provided in an embodiment of the present invention;

[0024] Figure 3A system block diagram of a main control chip provided in an embodiment of the present invention;

[0025] Figure 4 A system block diagram of an output module provided in an embodiment of the present invention;

[0026] Figure 5 A system block diagram of another output module provided in an embodiment of the present invention;

[0027] Figure 6 A system block diagram of another output module provided in an embodiment of the present invention;

[0028] Figure 7 A system block diagram of a first sub-circuit provided in an embodiment of the present invention;

[0029] Figure 8 A system block diagram of a second sub-circuit provided in an embodiment of the present invention;

[0030] Figure 9 A system block diagram of the overall output module provided in an embodiment of the present invention;

[0031] Figure 10 A circuit diagram of an overall output module provided for an embodiment of the present invention;

[0032] Figure 11 A circuit diagram of another output module provided in an embodiment of the present invention;

[0033] Figure 12 A circuit diagram of the main control chip provided in an embodiment of the present invention;

[0034] Figure 13 A circuit diagram showing that part of the resistor is an adjustable resistor, as provided in an embodiment of the present invention;

[0035] Figure 14 A circuit diagram showing another type of resistor where the partial resistor is adjustable, provided for an embodiment of the present invention;

[0036] Figure 15 A circuit diagram showing another type of circuit where part of the resistor is an adjustable resistor, provided as an embodiment of the present invention;

[0037] Figure 16 A circuit diagram showing another type of circuit where part of the resistor is an adjustable resistor, provided as an embodiment of the present invention;

[0038] Figure 17 A circuit diagram showing another type of circuit where part of the resistor is an adjustable resistor, provided as an embodiment of the present invention;

[0039] Figure 18 A circuit diagram showing another type of circuit where part of the resistor is an adjustable resistor, provided as an embodiment of the present invention;

[0040] Figure 19 A circuit diagram showing another type of circuit where part of the resistor is an adjustable resistor, provided as an embodiment of the present invention;

[0041] Figure 20 A circuit diagram showing another type of circuit where part of the resistor is an adjustable resistor, provided as an embodiment of the present invention;

[0042] Figure 21 A circuit diagram provided for an embodiment of the present invention, wherein all resistors are adjustable.

[0043] Figure 22 This is a flowchart illustrating the pin output levels of a main control chip, provided as an embodiment of the present invention. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0046] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this invention have the meaning of enabling conduction. The specific meaning needs to be understood in conjunction with the context.

[0048] In embodiments of the present invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in embodiments of the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0049] As described in the background section, current air conditioning systems commonly use home bus communication for communication between indoor and outdoor units, between the wired controller and the indoor unit, and between outdoor units. Communication chips, specifically communication protocol conversion chips (e.g., the 1192 communication chip), are used in these communication circuits. These chips are developed by Mitsubishi Corporation of Japan. Because each indoor unit, outdoor unit, and wired controller in a central air conditioning system needs to communicate, the demand for these chips is enormous. Furthermore, the high unit price of these chips increases the cost of the air conditioning system, thus hindering its further promotion.

[0050] If the main control chip has a built-in home bus communication function, that is, the function of the communication chip is decomposed onto the main control chip, then the output voltage of the main control chip needs to be adjusted. However, the communication pins of the main control chip cannot be adjusted at will, which is not conducive to the development of new functions.

[0051] like Figure 1 As shown, Figure 1 This is an existing air conditioning system. The air conditioning system includes a communication circuit, and the communication circuit includes a communication chip. Figure 1 The communication chip is located in the outdoor unit. The main control chip is electrically connected to the communication chip, and the communication chip communicates with other air conditioning equipment via the first and second buses. These other air conditioning equipment include the outdoor unit, indoor unit, and wired controller.

[0052] In other words, the outdoor units communicate with each other, communicate with the indoor units, and communicate with the wired controller. It should be noted that the communication chip can also be located in the indoor unit or the wired controller, thus enabling communication between any two units of the air conditioning system.

[0053] Based on this, this application provides an air conditioning system. This air conditioning system divides the existing communication chip into two parts. First, a portion of the communication chip's parsing function is integrated into the main control chip. Then, the other portion of the communication chip's function is implemented by adding multiple circuits to the communication loop, enabling the communication loop to complete the communication function even without the existing communication chip.

[0054] Here, parsing can be understood as the interpretation of signals, converting one form of communication protocol into another, similar to human translation.

[0055] Figure 2 This is a schematic diagram illustrating the composition of an air conditioning system provided in an embodiment of this application. The air conditioning system includes at least two air conditioning units and a communication bus. It should be noted that the air conditioning system involved in this embodiment can be a conventional air conditioning system consisting of one indoor unit and one outdoor unit, or a multi-split air conditioning system commonly known as a one-to-many system. For ease of description, different types of air conditioning systems are referred to as... Figure 2 The following is an example of the structural diagram of an air conditioning system.

[0056] like Figure 2 As shown, the air conditioning system 1000 includes: a controller 500; the controller 500 includes: an indoor unit 100, an outdoor unit 200, and a wired controller 300.

[0057] A Home Bus System (HBS) consists of a coaxial cable and four twisted pairs of wires. The former is used to transmit image information, while the latter is used to transmit voice, data, and control signals.

[0058] like Figure 3 As shown, the air conditioning system 1000 also includes: a first bus A and a second bus B;

[0059] The controller 500 includes a main control chip 50; the main control chip 50 includes a first pin 51 and a second pin 52; the first pin 51 is electrically connected to a first bus A, and the second pin 52 is electrically connected to a second bus B.

[0060] The main control chip 50 includes: a first output module 10 and a second output module 20; the first output module 10 is electrically connected to the first pin 51, and the second output module 20 is electrically connected to the second pin 52.

[0061] like Figure 4 As shown, at least one of the first output module 10 and the second output module 20 includes: a logic control module 1 and a level conversion circuit 2.

[0062] In other words, referencing Figure 4 The second output module 20 does not include: logic control module 1 and level conversion circuit 2; or, refer to Figure 5 Only the second output module 20 includes: logic control module 1 and level conversion circuit 2, while the first output module 10 does not include: logic control module 1 and level conversion circuit 2; or, not only does the first output module 10 include: logic control module 1 and level conversion circuit 2, but the second output module 20 also includes: logic control module 1 and level conversion circuit 2.

[0063] In some embodiments, the first output module 10 operates on the first pin 51, and the second output module 20 does not operate on the second pin 52; or, the second output module 20 operates on the first pin 51, and the first output module 10 does not operate on the second pin 52; or, the first output module 10 operates on the first pin 51, and the second output module 20 operates on the second pin 52.

[0064] The logic control module 1 includes a first control terminal 101 and a second control terminal 102.

[0065] Level conversion circuit 2 is electrically connected to logic control module 1, and also electrically connected to the first voltage terminal VCC and the second voltage terminal GND; the output terminal of level conversion circuit 2 is electrically connected to the first pin 51 or the second pin 52.

[0066] The logic control module 1 is configured to output a control signal, and the level conversion circuit 2 is configured to output the voltage signal of the first voltage terminal VCC to the pin to which it is electrically connected, or output the voltage signal of the second voltage terminal GND to the pin to which it is electrically connected, under the control of the control signal.

[0067] Taking the first output module 10 as an example, if the first output module 10 includes a logic control module 1 and a level conversion circuit 2, the first output module 10 operates on the first pin 51. The logic control module 1 outputs a control signal to the level conversion circuit 2. The level conversion circuit 2 receives the control signal and outputs the voltage signal of the first voltage terminal VCC to the first pin 51 of the main control chip. Alternatively, the level conversion circuit 2 receives the control signal and outputs the voltage signal of the second voltage terminal GND to the first pin 51 of the main control chip.

[0068] It should be noted that the voltage signal at the first voltage terminal, VCC, is the power supply voltage, which can also be understood as a high level. The voltage range of the first voltage terminal, VCC, is related to the voltage tolerance range of the main control chip pins. The maximum voltage of the first voltage terminal, VCC, can be the maximum voltage that the main control chip pins can withstand. The voltage signal at the second voltage terminal, GND, is the ground voltage, which can also be understood as a low level, or as a voltage output of zero.

[0069] In summary, the air conditioning system provided in some embodiments of this application facilitates the improvement of the main control chip's communication function by setting the pins of the main control chip to an adjustable output level mode. At the same time, the additional circuitry added to the main control chip further ensures its safe operation.

[0070] like Figure 6As shown, the level conversion circuit 2 includes a first sub-circuit 21 and a second sub-circuit 22; the first sub-circuit 21 is electrically connected to the first control terminal 101, the first voltage terminal VCC and the output terminal OUT; the second sub-circuit 22 is electrically connected to the second control terminal 102, the second voltage terminal GND and the output terminal OUT.

[0071] The first control terminal 101 is configured to output a first control signal, and the second control terminal 102 is configured to output a second control signal.

[0072] The logic control module 1 is configured to output a first control signal with an on level and a second control signal with an off level to control the first sub-circuit 21 to turn on and the second sub-circuit 22 to turn off; the first sub-circuit 21 is configured to transmit the voltage signal of the first voltage terminal VCC to the output terminal OUT.

[0073] The logic control module 1 is also configured to output a first control signal with a cutoff level and a second control signal with an on level to control the first sub-circuit 21 to close and the second sub-circuit 22 to open. The second sub-circuit 22 is configured to transmit the voltage signal of the second voltage terminal GND to the output terminal OUT.

[0074] It should be noted that the first control signal with an on level can be either high or low; the second control signal with an off level can be either high or low.

[0075] In other words, if the logic control module 1 is configured to output a first control signal with an on level and a second control signal with an off level, the first sub-circuit 21 can operate upon receiving the first control signal, while the second sub-circuit 22 can not operate upon receiving the second control signal, i.e., it is off. When the first sub-circuit 21 is operating and the second sub-circuit 22 is not operating, the voltage signal of the first voltage terminal VCC can be transmitted to the output terminal OUT.

[0076] If the logic control module 1 is also configured to output a first control signal with a cutoff level and a second control signal with an on level, the first sub-circuit 21 may not operate upon receiving the first control signal, while the second sub-circuit 22 may operate upon receiving the second control signal. When the first sub-circuit 21 is not operating and the second sub-circuit 22 is operating, the voltage signal at the second voltage terminal GND can be transmitted to the output terminal OUT.

[0077] like Figure 7 As shown, the first sub-circuit 21 includes: a first transistor Q1; the control electrode of the first transistor Q1 is electrically connected to the first control terminal 101, the first electrode of the first transistor Q1 is electrically connected to the first voltage terminal VCC, and the second electrode of the first transistor Q1 is electrically connected to the output terminal OUT.

[0078] like Figure 8 As shown, the second sub-circuit 22 includes: a second transistor Q2; the control electrode of the second transistor Q2 is electrically connected to the second control terminal 102, the first electrode of the second transistor Q2 is electrically connected to the output terminal OUT, and the second electrode of the second transistor Q2 is electrically connected to the second voltage terminal.

[0079] In some embodiments, the transistor is an NPN transistor, and the first control signal having an on level is high, and the second control signal having an off level is low.

[0080] In some embodiments, the transistor is a PNP transistor, and the first control signal having an on level is low, and the second control signal having an off level is high.

[0081] In other words, if the transistor is an NPN transistor, the logic control module 1 needs to output a high level to turn on the NPN transistor, that is, the sub-circuit in the level conversion circuit 2 will work; outputting a low level or not outputting a level will turn off the NPN transistor, that is, the sub-circuit in the level conversion circuit 2 will not work. If the transistor is a PNP transistor, the logic control module 1 needs to output a low level to turn on the PNP transistor, that is, the sub-circuit in the level conversion circuit 2 will work; outputting a high level or not outputting a level will turn off the PNP transistor, that is, the sub-circuit in the level conversion circuit 2 will not work.

[0082] Among them, such as Figure 8 As shown, taking an NPN transistor as an example, if the NPN transistor is conducting, for example, if the first transistor Q1 is conducting, then the connection between the first voltage terminal VCC and the output terminal OUT can be considered as a wire; if the second transistor Q2 is conducting, then the connection between the second voltage terminal GND and the output terminal OUT can be considered as a wire. If the first transistor Q1 is conducting and the second transistor Q2 is off, the output terminal outputs the voltage of the first voltage terminal VCC; if the first transistor Q1 is off and the second transistor Q2 is conducting, the output terminal outputs the voltage of the second voltage terminal GND; if the first transistor Q1 is conducting and the second transistor Q2 is also conducting, the circuit is short-circuited and cannot output voltage.

[0083] The specific process is as follows:

[0084] If logic control module 1 is configured to output a first control signal with an on level and a second control signal with an off level, the first transistor Q1 receives the first control signal and turns on, while the second transistor Q2 receives the second control signal and turns off. With the first transistor Q1 on and the second transistor Q2 off, the voltage signal at the first voltage terminal VCC can be transmitted to the output terminal OUT.

[0085] If logic control module 1 is also configured to output a first control signal with a cutoff level and a second control signal with an on level, the first transistor Q1 receives the first control signal and is cut off, while the second transistor Q2 receives the second control signal and is turned on. With the first transistor Q1 cut off and the second transistor Q2 turned on, the voltage signal at the second voltage terminal GND can be transmitted to the output terminal OUT.

[0086] In some embodiments, the logic control module 1 is configured to output a control signal, and the level conversion circuit 2 is further configured to output a set voltage signal to the pin to which it is electrically connected under the control of the control signal, wherein the voltage of the set voltage signal is any voltage between the voltage of the first voltage terminal and the voltage of the second voltage terminal.

[0087] In other words, the logic control module 1 outputs a control signal to the level conversion circuit 2. The level conversion circuit 2 receives the control signal and can output any voltage from the voltage signal at the first voltage terminal VCC to the voltage signal at the second voltage terminal GND to the first pin 51 of the main control chip.

[0088] like Figure 9 As shown, the logic control module 1 also includes a third control terminal 103, which is configured to output a third control signal;

[0089] The level conversion circuit 2 also includes: a third sub-circuit 23, a first voltage divider circuit 24, and a second voltage divider circuit 25.

[0090] The first voltage divider circuit 24 is electrically connected between the first voltage terminal VCC and the first sub-circuit 21; the first terminal of the second voltage divider circuit 25 is electrically connected to the first sub-circuit 21 and the output terminal OUT; the third sub-circuit 23 is electrically connected to the third control terminal 103, the second voltage terminal GND, and the second terminal of the second voltage divider circuit 25.

[0091] The logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, to control the first sub-circuit 21 and the third sub-circuit 23 to turn on, and to control the second sub-circuit 22 to turn off; the level conversion circuit 2 is configured to output a set voltage signal to the output terminal OUT.

[0092] In other words, logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level. First sub-circuit 21 can operate upon receiving the first control signal, second sub-circuit 22 can not operate (i.e., is off) upon receiving the second control signal, and third sub-circuit 23 can operate upon receiving the third control signal. When first sub-circuit 21 is operating, second sub-circuit 22 is not operating, and third sub-circuit 23 is operating, any voltage from the voltage signal at the first voltage terminal VCC to the voltage signal at the second voltage terminal GND can be output to the output terminal OUT.

[0093] like Figure 10 and Figure 12 As shown, the third sub-circuit 23 includes: a third transistor Q3; the control electrode of the third transistor is electrically connected to the third control terminal, the first electrode of the third transistor is electrically connected to the second terminal of the second voltage divider circuit, and the second electrode of the third transistor is electrically connected to the second voltage terminal.

[0094] like Figure 10 As shown, the first voltage divider circuit 24 includes a first resistor R1, and the second voltage divider circuit 25 includes a second resistor R2.

[0095] The first end of the first resistor R1 is electrically connected to the first voltage terminal VCC, and the second end of the first resistor R1 is electrically connected to the first electrode of the first transistor Q1.

[0096] The first end of the second resistor R2 is electrically connected to the second terminal of the first transistor Q1, and the second end of the second resistor R2 is electrically connected to the first terminal of the third transistor.

[0097] Among them, the first resistor R1 and the second resistor R2 not only serve as voltage dividers, but also prevent short circuits, thereby better protecting the safe operation of the main control chip 50.

[0098] For example, the voltage of the first voltage terminal VCC is 5V, the voltage of the second voltage terminal GND is 0V, the resistance of the first resistor R1 is the same as the resistance of the second resistor R2, and the voltage of the output terminal is 2.5V because the voltage of the output terminal is the voltage across the second resistor R2. If the ratio of the resistance of the first resistor R1 to the resistance of the second resistor R2 is 4:1, the voltage of the output terminal will be 1V.

[0099] Correspondingly, such as Figure 11 and Figure 12 As shown, the internal circuit structure of the second output module 20 is the same as that of the first output module 10, except that the first output module 10 is electrically connected to the first pin 51 of the main control chip 50, while the second output module 20 is electrically connected to the second pin 52 of the main control chip 50.

[0100] For ease of description of the subsequent scheme, the transistors in the second output module 20 are: the fourth transistor Q4, the fifth transistor Q5, and the sixth transistor Q6, which correspond one-to-one with the first transistor Q1, the second transistor Q2, and the third transistor Q3 in the first output module 10; the resistors in the second output module 20 are: the third resistor R3 and the fourth resistor R4, which correspond one-to-one with the first resistor R1 and the second resistor R2 in the first output module 10.

[0101] The voltage output from the output terminal is the voltage across the second resistor R2. The voltage across the second resistor R2 is related to the ratio of the resistance of the first resistor R1 to the resistance of the second resistor R2. Therefore, if the ratio of the resistance of the first resistor R1 to the resistance of the second resistor R2 can be changed, the voltage output from the output terminal can be adjusted arbitrarily.

[0102] like Figures 13-21 As shown, to facilitate the distinction of adjustable resistors, the first output module 10 and the second output module 20 will be used for further explanation below.

[0103] For the first resistor R1 and / or the second resistor R2, they are adjustable resistors; for the second output module 20, the third resistor R3 and / or the fourth resistor R4 are adjustable resistors.

[0104] The logic control module 1 further includes a fourth control terminal 104 and a fifth control terminal 105. The fourth control terminal 104 is electrically connected to the first resistor R1 and / or the third resistor R3, and the fifth control terminal 105 is electrically connected to the second resistor R2 and / or the fourth resistor R4. The control signal output from the fourth control terminal 104 can control the resistance value of the first resistor R1 and / or the third resistor R3. Similarly, the control signal output from the fifth control terminal 105 can also control the resistance value of the second resistor R2 and / or the fourth resistor R4.

[0105] like Figure 13 As shown, in some embodiments, the first resistor R1 and the third resistor R3 are adjustable resistors.

[0106] Reference Figure 13 The fourth control terminal 104 of the logic control module 1 of the first output module 10 is electrically connected to the first resistor R1, and the fourth control terminal 104 of the logic control module 1 of the second output module 20 is electrically connected to the third resistor R3.

[0107] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the first transistor Q1 to turn on, the third control signal controls the third transistor Q3 to turn on, and the second control signal controls the second transistor Q2 to turn off. The first transistor Q1 and the third transistor Q3 are connected, transmitting the voltage across the second resistor R2 to the output terminal. Simultaneously, the resistance value of the first resistor R1 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the first pin 51 of the main control chip 50. In other words, the first transistor Q1 and the third transistor Q3 are configured to output either the voltage signal from the first voltage terminal VCC to the voltage signal from the second voltage terminal GND to the output terminal OUT.

[0108] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the fourth transistor Q4 to turn on, the third control signal controls the sixth transistor Q6 to turn on, and the second control signal controls the fifth transistor Q5 to turn off. The fourth transistor Q4 and the sixth transistor Q6 are connected, transmitting the voltage across the fourth resistor R4 to the output terminal OUT. Simultaneously, the resistance value of the third resistor R3 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the second pin 52 of the main control chip 50. In other words, the fourth transistor Q4 and the sixth transistor Q6 are configured to transmit the voltage signal from the first voltage terminal VCC to the output terminal.

[0109] like Figure 14 As shown, in some embodiments, the first resistor R1 and the fourth resistor R4 are adjustable resistors.

[0110] Reference Figure 14 The fourth control terminal 104 of the logic control module 1 of the first output module 10 is electrically connected to the first resistor R1, and the fifth control terminal 105 of the logic control module 1 of the second output module 20 is electrically connected to the fourth resistor R4.

[0111] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the first transistor Q1 to turn on, the third control signal controls the third transistor Q3 to turn on, and the second control signal controls the second transistor Q2 to turn off. The first transistor Q1 and the third transistor Q3 are connected, transmitting the voltage across the second resistor R2 to the output terminal. Simultaneously, the resistance value of the first resistor R1 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the first pin 51 of the main control chip 50. In other words, the first transistor Q1 and the third transistor Q3 are configured to output either the voltage signal from the first voltage terminal VCC to the voltage signal from the second voltage terminal GND to the output terminal OUT.

[0112] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the fourth transistor Q4 to turn on, the third control signal controls the sixth transistor Q6 to turn on, and the second control signal controls the fifth transistor Q5 to turn off. The fourth transistor Q4 and the sixth transistor Q6 are connected, transmitting the voltage across the fourth resistor R4 to the output terminal OUT. Simultaneously, the resistance value of the fourth resistor R4 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the second pin 52 of the main control chip 50. In other words, the fourth transistor Q4 and the sixth transistor Q6 are configured to transmit the voltage signal from the first voltage terminal VCC to the output terminal.

[0113] like Figure 15 As shown, in some embodiments, the second resistor R2 and the third resistor R3 are adjustable resistors.

[0114] Reference Figure 15 The fifth control terminal 105 of the logic control module 1 of the first output module 10 is electrically connected to the second resistor R2, and the fourth control terminal 104 of the logic control module 1 of the second output module 20 is electrically connected to the third resistor R3.

[0115] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the first transistor Q1 to turn on, the third control signal controls the third transistor Q3 to turn on, and the second control signal controls the second transistor Q2 to turn off. The first transistor Q1 and the third transistor Q3 are connected, transmitting the voltage across the second resistor R2 to the output terminal. Simultaneously, the resistance value of the second resistor R2 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the first pin 51 of the main control chip 50. In other words, the first transistor Q1 and the third transistor Q3 are configured to output either the voltage signal from the first voltage terminal VCC to the voltage signal from the second voltage terminal GND to the output terminal OUT.

[0116] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the fourth transistor Q4 to turn on, the third control signal controls the sixth transistor Q6 to turn on, and the second control signal controls the fifth transistor Q5 to turn off. The fourth transistor Q4 and the sixth transistor Q6 are connected, transmitting the voltage across the fourth resistor R4 to the output terminal OUT. Simultaneously, the resistance value of the third resistor R3 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the second pin 52 of the main control chip 50. In other words, the fourth transistor Q4 and the sixth transistor Q6 are configured to transmit the voltage signal from the first voltage terminal VCC to the output terminal.

[0117] like Figure 16 As shown, in some embodiments, the second resistor R2 and the fourth resistor R4 are adjustable resistors.

[0118] Reference Figure 16 The fifth control terminal 105 of the logic control module 1 of the first output module 10 is electrically connected to the second resistor R2, and the fifth control terminal 105 of the logic control module 1 of the second output module 20 is electrically connected to the fourth resistor R4.

[0119] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the first transistor Q1 to turn on, the third control signal controls the third transistor Q3 to turn on, and the second control signal controls the second transistor Q2 to turn off. The first transistor Q1 and the third transistor Q3 are connected, transmitting the voltage across the second resistor R2 to the output terminal. Simultaneously, the resistance value of the second resistor R2 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the first pin 51 of the main control chip 50. In other words, the first transistor Q1 and the third transistor Q3 are configured to output either the voltage signal from the first voltage terminal VCC to the voltage signal from the second voltage terminal GND to the output terminal OUT.

[0120] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the fourth transistor Q4 to turn on, the third control signal controls the sixth transistor Q6 to turn on, and the second control signal controls the fifth transistor Q5 to turn off. The fourth transistor Q4 and the sixth transistor Q6 are connected, transmitting the voltage across the fourth resistor R4 to the output terminal OUT. Simultaneously, the resistance value of the fourth resistor R4 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the second pin 52 of the main control chip 50. In other words, the fourth transistor Q4 and the sixth transistor Q6 are configured to transmit the voltage signal from the first voltage terminal VCC to the output terminal OUT.

[0121] like Figure 17 As shown, in some embodiments, the first resistor R1, the third resistor R3, and the fourth resistor R4 are adjustable resistors.

[0122] Reference Figure 17 The fourth control terminal 104 of the logic control module 1 of the first output module 10 is electrically connected to the first resistor R1; the fourth control terminal 104 of the logic control module 1 of the second output module 20 is electrically connected to the third resistor R3, and the fifth control terminal 105 is electrically connected to the fourth resistor R4.

[0123] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the first transistor Q1 to turn on, the third control signal controls the third transistor Q3 to turn on, and the second control signal controls the second transistor Q2 to turn off. The first transistor Q1 and the third transistor Q3 are connected, transmitting the voltage across the second resistor R2 to the output terminal. Simultaneously, the resistance value of the first resistor R1 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the first pin 51 of the main control chip 50. In other words, the first transistor Q1 and the third transistor Q3 are configured to output either the voltage signal from the first voltage terminal VCC to the voltage signal from the second voltage terminal GND to the output terminal OUT.

[0124] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the fourth transistor Q4 to turn on, the third control signal controls the sixth transistor Q6 to turn on, and the second control signal controls the fifth transistor Q5 to turn off. The fourth transistor Q4 and the sixth transistor Q6 are connected, transmitting the voltage across the fourth resistor R4 to the output terminal OUT. Simultaneously, the resistance values ​​of the third resistor R3 and the fourth resistor R4 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the second pin 52 of the main control chip 50. In other words, the fourth transistor Q4 and the sixth transistor Q6 are configured to transmit the voltage signal from the first voltage terminal VCC to the output terminal OUT.

[0125] like Figure 18 As shown, in some embodiments, the second resistor R2, the third resistor R3, and the fourth resistor R4 are adjustable resistors.

[0126] Reference Figure 18 The fifth control terminal 105 of the logic control module 1 of the first output module 10 is electrically connected to the second resistor R2; the fourth control terminal 104 of the logic control module 1 of the second output module 20 is electrically connected to the third resistor R3, and the fifth control terminal 105 is electrically connected to the fourth resistor R4.

[0127] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the first transistor Q1 to turn on, the third control signal controls the third transistor Q3 to turn on, and the second control signal controls the second transistor Q2 to turn off. The first transistor Q1 and the third transistor Q3 are connected, transmitting the voltage across the second resistor R2 to the output terminal. Simultaneously, the resistance value of the second resistor R2 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the first pin 51 of the main control chip 50. In other words, the first transistor Q1 and the third transistor Q3 are configured to output either the voltage signal from the first voltage terminal VCC to the voltage signal from the second voltage terminal GND to the output terminal OUT.

[0128] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the fourth transistor Q4 to turn on, the third control signal controls the sixth transistor Q6 to turn on, and the second control signal controls the fifth transistor Q5 to turn off. The fourth transistor Q4 and the sixth transistor Q6 are connected, transmitting the voltage across the fourth resistor R4 to the output terminal OUT. Simultaneously, the resistance values ​​of the third resistor R3 and the fourth resistor R4 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the second pin 52 of the main control chip 50. In other words, the fourth transistor Q4 and the sixth transistor Q6 are configured to transmit the voltage signal from the first voltage terminal VCC to the output terminal OUT.

[0129] like Figure 19 As shown, in some embodiments, the first resistor R1, the second resistor R2, and the third resistor R3 are adjustable resistors.

[0130] Reference Figure 19 The fourth control terminal 104 of the logic control module 1 of the first output module 10 is electrically connected to the first resistor R1, and the fifth control terminal 105 is electrically connected to the second resistor R2; the fourth control terminal 104 of the logic control module 1 of the second output module 20 is electrically connected to the third resistor R3.

[0131] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the first transistor Q1 to turn on, the third control signal controls the third transistor Q3 to turn on, and the second control signal controls the second transistor Q2 to turn off. The first transistor Q1 and the third transistor Q3 are connected, transmitting the voltage across the second resistor R2 to the output terminal. Simultaneously, the resistance values ​​of the first resistor R1 and the second resistor R2 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the first pin 51 of the main control chip 50. In other words, the first transistor Q1 and the third transistor Q3 are configured to output either the voltage signal from the first voltage terminal VCC to the voltage signal from the second voltage terminal GND to the output terminal OUT.

[0132] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the fourth transistor Q4 to turn on, the third control signal controls the sixth transistor Q6 to turn on, and the second control signal controls the fifth transistor Q5 to turn off. The fourth transistor Q4 and the sixth transistor Q6 are connected, transmitting the voltage across the fourth resistor R4 to the output terminal. Simultaneously, the resistance value of the third resistor R3 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the second pin 52 of the main control chip 50. In other words, the fourth transistor Q4 and the sixth transistor Q6 are configured to transmit the voltage signal from the first voltage terminal VCC to the output terminal OUT.

[0133] like Figure 20 As shown, in some embodiments, the first resistor R1, the second resistor R2, and the fourth resistor R4 are adjustable resistors.

[0134] Reference Figure 20 The fourth control terminal 104 of the logic control module 1 of the first output module 10 is electrically connected to the first resistor R1, and the fifth control terminal 105 is electrically connected to the second resistor R2; the fifth control terminal 105 of the logic control module 1 of the second output module 20 is electrically connected to the fourth resistor R4.

[0135] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the first transistor Q1 to turn on, the third control signal controls the third transistor Q3 to turn on, and the second control signal controls the second transistor Q2 to turn off. The first transistor Q1 and the third transistor Q3 are connected, transmitting the voltage across the second resistor R2 to the output terminal. Simultaneously, the resistance values ​​of the first resistor R1 and the second resistor R2 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the first pin 51 of the main control chip 50. In other words, the first transistor Q1 and the third transistor Q3 are configured to output either the voltage signal from the first voltage terminal VCC to the voltage signal from the second voltage terminal GND to the output terminal OUT.

[0136] When logic control module 1 is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, the first control signal controls the fourth transistor Q4 to turn on, the third control signal controls the sixth transistor Q6 to turn on, and the second control signal controls the fifth transistor Q5 to turn off. The fourth transistor Q4 and the sixth transistor Q6 are connected, transmitting the voltage across the fourth resistor R4 to the output terminal. Simultaneously, the resistance value of the fourth resistor R4 can be modified to adjust the voltage at the output terminal, thereby adjusting the voltage at the second pin 52 of the main control chip 50. In other words, the fourth transistor Q4 and the sixth transistor Q6 are configured to transmit the voltage signal from the first voltage terminal VCC to the output terminal OUT.

[0137] like Figure 21 As shown, in some embodiments, the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 are all adjustable resistors.

[0138] Reference Figure 21 The fourth control terminal 104 of the logic control module 1 of the first output module 10 is electrically connected to the first resistor R1, and the fifth control terminal 105 is electrically connected to the second resistor R2; the fourth control terminal 104 of the logic control module 1 of the second output module 20 is electrically connected to the third resistor R3, and the fifth control terminal 105 is electrically connected to the fourth resistor R4.

[0139] At this time, the resistance values ​​of the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 can be adjusted arbitrarily, and the first pin 51 and the second pin 52 of the main control chip 50 can output appropriate voltages.

[0140] To facilitate understanding of the solution in this application, the following flowchart illustrates the process of sending and receiving signals in the communication loop.

[0141] like Figure 22As shown, taking the example of the first bus A outputting a low level (voltage at the second voltage terminal GND) and the second bus B outputting a high level (voltage at the first voltage terminal VCC), the voltage regulation process is explained in detail below:

[0142] S101, the first resistor R1 and the second resistor R2 are set to their maximum resistance values.

[0143] S102, logic control module 1 outputs a high level to the second transistor Q2, turning on the second transistor Q2. At this time, the first transistor Q1 and the third transistor Q3 are turned off.

[0144] S103, First bus A outputs low level.

[0145] S104, the third resistor R3, and the fourth resistor R4 are set to their maximum resistance values.

[0146] S105, logic control module 1 outputs a high level to the fourth transistor Q4, turning on the fourth transistor Q4. At this time, the fifth transistor Q5 and the sixth transistor Q6 are turned off.

[0147] S106, Second bus B outputs high level.

[0148] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An air conditioning system, characterized in that, include: First bus and second bus; A power supply, the power supply including a first voltage terminal and a second voltage terminal; The voltage signal at the first voltage terminal VCC is the power supply voltage, and the voltage signal at the second voltage terminal GND is the ground voltage. The controller includes a main control chip; the main control chip includes a first pin and a second pin; the first pin is electrically connected to the first bus, and the second pin is electrically connected to the second bus; The main control chip includes: a first output module and a second output module; the first output module is electrically connected to the first pin, and the second output module is electrically connected to the second pin; At least one of the first output module and the second output module includes: a logic control module and a level conversion circuit; The level conversion circuit is electrically connected to the logic control module, and also electrically connected to the first voltage terminal and the second voltage terminal; the output terminal of the level conversion circuit is electrically connected to the first pin or the second pin. The logic control module is configured to output a control signal, and the level conversion circuit is configured to, under the control of the control signal, output the voltage signal of the first voltage terminal to the pin to which it is electrically connected, or output the voltage signal of the second voltage terminal to the pin to which it is electrically connected.

2. The air conditioning system according to claim 1, characterized in that, The logic control module includes a first control terminal and a second control terminal; the first control terminal is configured to output a first control signal, and the second control terminal is configured to output a second control signal. The level conversion circuit includes a first sub-circuit and a second sub-circuit; The first sub-circuit is electrically connected to the first control terminal, the first voltage terminal, and the output terminal; The second sub-circuit is electrically connected to the second control terminal, the second voltage terminal, and the output terminal; The logic control module is configured to output a first control signal with an on level and a second control signal with an off level to control the first sub-circuit to turn on and the second sub-circuit to turn off; the first sub-circuit is configured to transmit the voltage signal of the first voltage terminal to the output terminal; The logic control module is further configured to output a first control signal with a cutoff level and a second control signal with an on level to control the first sub-circuit to turn off and control the second sub-circuit to turn on. The second sub-circuit is configured to transmit the voltage signal of the second voltage terminal to the output terminal.

3. The air conditioning system according to claim 2, characterized in that, The first sub-circuit includes: a first transistor; The control electrode of the first transistor is electrically connected to the first control terminal, the first electrode of the first transistor is electrically connected to the first voltage terminal, and the second electrode of the first transistor is electrically connected to the output terminal.

4. The air conditioning system according to claim 3, characterized in that, The second sub-circuit includes: a second transistor; The control electrode of the second transistor is electrically connected to the second control terminal, the first electrode of the second transistor is electrically connected to the output terminal, and the second electrode of the second transistor is electrically connected to the second voltage terminal.

5. The air conditioning system according to any one of claims 2 to 4, characterized in that, The logic control module is configured to output a control signal, and the level conversion circuit is further configured to output a set voltage signal to the pin to which it is electrically connected under the control of the control signal, wherein the voltage of the set voltage signal is any voltage between the voltage of the first voltage terminal and the voltage of the second voltage terminal.

6. The air conditioning system according to claim 5, characterized in that, The logic control module further includes a third control terminal, which is configured to output a third control signal; The level conversion circuit further includes: a third sub-circuit, a first voltage divider sub-circuit, and a second voltage divider circuit; The first voltage divider circuit is electrically connected between the first voltage terminal and the first sub-circuit. The first terminal of the second voltage divider circuit is electrically connected to the first sub-circuit and the output terminal; The third sub-circuit is electrically connected to the third control terminal, the second voltage terminal, and the second terminal of the second voltage divider sub-circuit. The logic control module is configured to output a first control signal and a third control signal with an on level, and a second control signal with an off level, to control the first sub-circuit and the third sub-circuit to turn on, and to control the second sub-circuit to turn off; the level conversion circuit is configured to output the set voltage signal to the output terminal.

7. The air conditioning system according to claim 6, characterized in that, The third sub-circuit includes: a third transistor; The control electrode of the third transistor is electrically connected to the third control terminal, the first electrode of the third transistor is electrically connected to the second terminal of the second voltage divider circuit, and the second electrode of the third transistor is electrically connected to the second voltage terminal.

8. The air conditioning system according to claim 7, characterized in that, The first sub-circuit includes: a first transistor; The first voltage divider circuit includes a first resistor, and the second voltage divider circuit includes a second resistor; The first end of the first resistor is electrically connected to the first voltage terminal, and the second end of the first resistor is electrically connected to the first electrode of the first transistor. The first end of the second resistor is electrically connected to the second terminal of the first transistor, and the second end of the second resistor is electrically connected to the first terminal of the third transistor.

9. The air conditioning system according to claim 8, characterized in that, The first resistor and / or the second resistor are adjustable resistors.

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