Air conditioner

Abstract

According to the air conditioner provided by the invention, when a controller receives a first control instruction for indicating the air conditioner to enter a music playing mode, the air conditioner is controlled to enter the music playing mode, so that in the music playing mode, target beat time is determined according to a music score of preset music; and the target frequency is determined according to the fixed tone of the preset music, and the playing device is controlled to play the music in combination with the target beat time and the target frequency, so that the playing device of the air conditioner performs music playing according to the music score and the fixed tone of the preset music, and the richness and accuracy of music playing of the air conditioner are improved. Therefore, the entertainment of the air conditioner can be improved, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to an air conditioner. Background Art

[0002] An air conditioner is a widely used appliance in people's lives. The air conditioner plays an important role in regulating the indoor temperature, providing a healthy and comfortable indoor environment for users and meeting the needs of normal work, life and study.

[0003] However, most of the existing air conditioners only have the function of adjusting the air temperature and cannot add a music function, or simply play music, resulting in limited functions and unable to improve the user experience well. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the object of the present invention is to provide an air conditioner, in which the playback device of the air conditioner performs music performance playback according to the score and key of a preset music, improving the richness and accuracy of the music performance of the air conditioner, thereby improving the entertainment of the air conditioner and thus enhancing the user experience.

[0006] An embodiment of the present invention provides an air conditioner, which includes: an air conditioner body; a playback device disposed on the air conditioner body for playing music; a controller connected to the playback device, and the controller is configured to: receive a first control instruction for instructing the air conditioner to enter a music playback mode; in response to the first control instruction, control the air conditioner to enter the music playback mode, and in the music playback mode, determine a target beat time according to the score of the preset music, determine a target frequency according to the key of the preset music, and control the playback device to perform music playback in combination with the target beat time and the target frequency.

[0007] The above technical solution has the following advantages or beneficial effects: According to the air conditioner provided by the embodiment of the present invention, when the controller receives a first control instruction for instructing the air conditioner to enter a music playback mode, it controls the air conditioner to enter the music playback mode, and in the music playback mode, determines a target beat time according to the score of the preset music, determines a target frequency according to the key of the preset music, and controls the playback device to perform music playback in combination with the target beat time and the target frequency, so that the playback device of the air conditioner performs music performance playback according to the score and key of the preset music, improving the richness and accuracy of the music performance of the air conditioner, thereby improving the entertainment of the air conditioner and thus enhancing the user experience.

[0008] In addition, the air conditioner according to the embodiments of the present invention may further have the following additional technical features: Further, when determining the target beat time according to the musical score of the preset music, the controller is configured to: construct a music score and time mapping relationship table, wherein the music score and time mapping relationship table includes the corresponding mapping relationships between different music score parameters and beat times, and the music score parameters include time signature, line beat speed, and note duration; based on the preset music score and time mapping relationship table, obtain the target beat time corresponding to the music score of the preset music.

[0009] The above technical solution has the following advantages or beneficial effects: For the air conditioner provided by the embodiments of the present invention, the controller constructs a music score and time mapping relationship table including the corresponding mapping relationships between different music score parameters and beat times according to the line beat speed and note duration, which helps to subsequently obtain the target beat time corresponding to the music score of the preset music based on the preset music score and time mapping relationship table, and further enables the playback device of the air conditioner to perform music performance playback according to the musical score of the preset music, which helps to improve the beat accuracy of the music performance of the air conditioner.

[0010] Further, when constructing the music score and time mapping relationship table, the controller is configured to: the beat time corresponding to the time signature in the music score is Tword = 60 / S SZ, where S is the line beat speed and SZ is the note duration.

[0011] The above technical solution has the following advantages or beneficial effects: For the air conditioner provided by the embodiments of the present invention, the controller obtains the target frequency corresponding to the key of the preset music based on the preset key and frequency mapping relationship table, so that the playback device of the air conditioner can perform music performance playback according to the key of the preset music, which helps to improve the key accuracy of the music performance of the air conditioner.

[0012] Further, when determining the target frequency according to the key of the preset music, the controller is configured to: based on the preset key and frequency mapping relationship table, obtain the target frequency corresponding to the key of the preset music, wherein the key and frequency mapping relationship table includes the corresponding mapping relationships between different keys and frequencies.

[0013] The above technical solution has the following advantages or beneficial effects: For the air conditioner provided by the embodiments of the present invention, the controller obtains the target frequency corresponding to the key of the preset music based on the preset key and frequency mapping relationship table, so that the playback device of the air conditioner can perform music performance playback according to the key of the preset music, which helps to improve the key accuracy of the music performance of the air conditioner.

[0014] Further, when controlling the playback device to play music in combination with the target beat time and the target frequency, the controller is configured to: generate a PWM wave signal in combination with the target beat time and the target frequency; input the PWM wave signal into the playback device so that the playback device plays music according to the PWM wave signal.

[0015] Further, the playback device includes a buzzer, and the buzzer includes a first buzzer and / or a second buzzer. Wherein, both the first buzzer and the second buzzer include a frequency input terminal, and the second buzzer further includes a beat input terminal. Wherein, both the frequency input terminal and the beat input terminal are used to receive the PWM wave signal.

[0016] The above technical solution has the following advantages or beneficial effects: According to the air conditioner provided by the embodiment of the present invention, when the controller receives a first control instruction for instructing the air conditioner to enter the music playback mode, the controller controls the air conditioner to enter the music playback mode. In the music playback mode, the controller determines the target beat time according to the score of the preset music, determines the target frequency according to the key of the preset music, and generates a PWM wave signal in combination with the target beat time and the target frequency; inputs the PWM wave signal into the playback device so that the playback device plays music according to the PWM wave signal, so that the playback device of the air conditioner plays music according to the score and key of the preset music, improving the richness and accuracy of the music performance of the air conditioner, thereby improving the entertainment of the air conditioner and thus improving the user experience.

[0017] Further, when inputting the PWM wave signal into the playback device to enable the playback device to play music, the controller is configured to: adjust the duty cycle of the PWM wave signal to control the sound brightness of the playback device when playing music.

[0018] The above technical solution has the following advantages or beneficial effects: According to the air conditioner provided by the embodiment of the present invention, when the controller receives a first control instruction for instructing the air conditioner to enter the music playback mode, the controller controls the air conditioner to enter the music playback mode. In the music playback mode, the controller determines the target beat time according to the score of the preset music, determines the target frequency according to the key of the preset music, and generates a PWM wave signal in combination with the target beat time and the target frequency; inputs the PWM wave signal into the playback device so that the playback device plays music according to the PWM wave signal, so that the playback device of the air conditioner plays music according to the score and key of the preset music, improving the richness and accuracy of the music performance of the air conditioner. At the same time, the controller can also adjust the duty cycle of the PWM wave signal to control the sound brightness of the playback device when playing music, so that the sound brightness meets the needs of people and improves the comfort of the music performance of the air conditioner.

[0019] Further, the beat includes a strong beat and a weak beat; when adjusting the duty cycle of the PWM wave signal to control the sound brightness of the music played by the playback device, the controller is further configured to: adjust the duty cycle of the PWM wave signal to control the playback device to play music at the same sound brightness according to the strong beat and the weak beat; or, adjust the duty cycle of the PWM wave signal to control the playback device to play music at different sound brightnesses according to the strong beat and the weak beat.

[0020] The above technical solution has the following advantages or beneficial effects: According to the air conditioner provided by the embodiment of the present invention, when controlling the sound brightness of the music played by the playback device, the controller can adopt two control strategies: One is to adjust the duty cycle of the PWM wave signal to control the playback device to play music at the same sound brightness according to the strong beat and the weak beat; the other is to adjust the duty cycle of the PWM wave signal to control the playback device to play music at different sound brightnesses according to the strong beat and the weak beat; thereby not only making the sound brightness meet the needs of the people and improving the comfort of the music performance of the air conditioner, but also enriching the form of the sound brightness, highlighting the changes between the strong and weak beats, and improving the emotional richness of the performance.

[0021] Further, the sound brightness of the playback device includes a first sound brightness and a second sound brightness, wherein the first sound brightness is higher than the second sound brightness; when adjusting the duty cycle of the PWM wave signal to control the playback device to play music at different sound brightnesses according to the strong beat and the weak beat, the controller is further configured to: adjust the duty cycle of the PWM wave signal to control the playback device to play music at the first sound brightness according to the strong beat; adjust the duty cycle of the PWM wave signal to control the playback device to play music at the second sound brightness according to the weak beat.

[0022] The above technical solution has the following advantages or beneficial effects: According to the air conditioner provided by the embodiment of the present invention, when controlling the sound brightness of the music played by the playback device, the controller can adjust the duty cycle of the PWM wave signal to control the playback device to play music at the first sound brightness according to the strong beat, and adjust the duty cycle of the PWM wave signal to control the playback device to play music at the second sound brightness according to the weak beat, so that the playback device can play music at different sound brightnesses according to the strong beat and the weak beat, thereby enriching the form of the sound brightness, highlighting the changes between the strong and weak beats, and improving the emotional richness of the performance.

[0023] Further, the controller is further configured to: receive a second control instruction for instructing the air conditioner to enter the air conditioning mode; in response to the second control instruction, control the air conditioner to exit the music playback mode, and until a preset time is reached, control the air conditioner to re-enter the music playback mode.

[0024] The above technical solution has the following advantages or beneficial effects: According to the air conditioner provided by the embodiment of the present invention, when the controller receives a second control instruction for instructing the air conditioner to enter the air conditioning mode, it controls the air conditioner to exit the music playback mode, and until a preset time is reached, controls the air conditioner to re-enter the music playback mode, thereby avoiding unnecessary interruption interference of the air conditioning mode on the music playback mode of the air conditioner and helping to improve the intelligence of the air conditioner.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein: Figure 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention; Figure 2 is a schematic hardware structure diagram of a controller according to a specific embodiment of the present invention; Figure 3 is a schematic structural diagram of an air conditioner according to a specific embodiment of the present invention; Figure 4 is a schematic structural diagram of a refrigeration system of an air conditioner according to a specific embodiment of the present invention; Figure 5 is a schematic circuit diagram of a single-tone buzzer provided by a specific embodiment of the present invention; Figure 6 is a schematic circuit diagram of a beautiful-sound buzzer provided by a specific embodiment of the present invention; Figure 7 is a schematic diagram of PWM and duty cycle provided by a specific embodiment of the present invention; Figure 8 is a schematic diagram of an indoor unit of a wall-mounted air conditioner provided by a specific embodiment of the present invention; Figure 9 is a schematic diagram of a wall-mounted and floor-standing air conditioner provided by a specific embodiment of the present invention; Figure 10 is a schematic diagram of a music score provided by a specific embodiment of the present invention; Figure 11It is a relationship diagram of time signatures and strong and weak beats provided by a specific embodiment of the present invention; Figure 12 It is a comparison table of international standard pitch and frequency provided by a specific embodiment of the present invention; Figure 13 It is a music playback control flow chart of an air conditioner display device according to a specific embodiment of the present invention. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Next, refer to Figures 1 - 13 Describe an air conditioner according to an embodiment of the present invention.

[0032] Figure 1 It is a schematic structural diagram of an air conditioner according to an embodiment of the present invention. As Figure 1As shown, an air conditioner 10 provided by an embodiment of the present invention includes: an air conditioner body 11; a playback device 12, the playback device 12 is arranged on the air conditioner body 11, and is used to play music; a controller 71, the controller 71 is connected to the playback device 12, and the controller 71 is configured to: receive a first control instruction for instructing the air conditioner 10 to enter a music playback mode; in response to the first control instruction, control the air conditioner 10 to enter the music playback mode, so that in the music playback mode, a target beat time is determined according to the music score of a preset music, a target frequency is determined according to the tuning of the preset music, and the playback device 12 is controlled to play music in combination with the target beat time and the target frequency.

[0033] In a specific embodiment, the playback device 12 is arranged on the air conditioner body 11. The playback device 12 is, for example, a buzzer provided by the air conditioner 10. The structure of the air conditioner 10 itself is utilized without any additional cost, volume or structural complexity.

[0034] In a specific embodiment, the operator can send a first control instruction through the terminal to turn on the music playback mode of the air conditioner 10. The terminal includes but is not limited to the air conditioner terminal and the user handheld terminal, and the user handheld terminal includes but is not limited to the mobile phone APP and the remote control.

[0035] In a specific embodiment, the preset music can be stored in the controller 71 by the operator to facilitate the controller 71 to call.

[0036] Specifically, the air conditioner 10 provided according to an embodiment of the present invention, when the controller 71 receives the first control instruction for instructing the air conditioner 10 to enter the music playback mode, controls the air conditioner 10 to enter the music playback mode, so that in the music playback mode, the target beat time is determined according to the music score of the preset music, the target frequency is determined according to the tuning of the preset music, and the playback device 12 is controlled to play the music in combination with the target beat time and the target frequency, so that the playback device 12 of the air conditioner 10 plays the music according to the music score and tuning of the preset music, thereby improving the richness and accuracy of the music performance of the air conditioner 10, thereby improving the entertainment of the air conditioner 10 and thus improving the user experience.

[0037] In a specific embodiment, the controller 71 refers to a device that can generate an operation control signal according to the instruction operation code and the timing signal to instruct the electric device 10 to execute the control instruction. For example, in response to a power-on or power-off instruction received from a user, the controller 71 can execute an operation related to the object selected by the power-on or power-off instruction.

[0038] Figure 2 is a schematic diagram of the hardware structure of a controller according to a specific embodiment of the present invention, such as Figure 2As shown, in a specific embodiment of the present invention, the controller 71 includes a processor 83. Optionally, it further includes a memory 82 and a communication interface 84 connected to the processor 83. The processor 83, the memory 82, and the communication interface 84 are connected through a bus 81.

[0039] The processor 83 may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller 718, a programmable logic device (PLD), or any combination thereof. The processor 83 may also be any other device with processing capabilities, such as a circuit, a device, or a software module. The processor 83 may also include multiple CPUs, and the processor 83 may be a single-CPU processor or a multi-CPU processor. Here, the processor 83 may refer to one or more devices, circuits, or processing cores for processing data (such as computer program instructions).

[0040] The memory 82 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), or other types of dynamic storage devices that can store information and instructions. It may also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic storage medium such as a disk storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer. The embodiments of the present invention do not impose any restrictions on this. The memory 82 may exist independently or be integrated with the processor 83. Among them, the memory 82 may contain computer program code. The processor 83 is used to execute the computer program code stored in the memory 82, thereby implementing the control method of the electrical equipment provided by the embodiments of the present invention.

[0041] The communication interface 84 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communication interface 84 can be a module, a circuit, a transceiver, or any device capable of implementing communication.

[0042] The bus 81 can be a peripheral component interconnect (PCI) bus 81 or an extended industry standard architecture (EISA) bus 81, etc. The bus 81 can be divided into an address bus 81, a data bus 81, a control bus 81, etc. For the sake of simplicity in representation, Figure 2 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus 81 or one type of bus 81.

[0043] Figure 3 is a schematic structural diagram of an air conditioner according to a specific embodiment of the present invention. As Figure 3 shown, in the specific embodiment of the present invention, the air conditioner includes a refrigeration system for exchanging heat with indoor air to meet the refrigeration or heating requirements.

[0044] Figure 4 is a schematic structural diagram of the refrigeration system of an air conditioner according to a specific embodiment of the present invention. As Figure 4 shown, in the specific embodiment of the present invention, the refrigeration system includes a compressor, a condenser, an electronic expansion valve, and an evaporator. In the specific embodiment of the present invention, the air conditioner executes the refrigeration cycle of the air conditioner by using the compressor, the condenser, the electronic expansion valve, and the evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0045] The compressor compresses the refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0046] The electronic expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the electronic expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor.

[0047] The evaporator can achieve a refrigeration effect by using the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0048] The outdoor unit 2 of the air conditioner refers to the part of the refrigeration cycle that includes a compressor and an outdoor heat exchanger. The indoor unit 1 of the air conditioner includes an indoor heat exchanger, and the electronic expansion valve can be provided in the indoor unit 1 or the outdoor unit 2.

[0049] The indoor heat exchanger and the outdoor heat exchanger are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner serves as a heater in the heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner serves as a cooler in the cooling mode.

[0050] The air conditioner in the specific embodiment of the present invention includes an indoor unit 1 and an outdoor unit 2. The indoor unit 1 and the outdoor unit 2 can be set as an integrated machine or a split machine. The indoor unit 1 can be set as a wall-mounted unit, a ceiling unit, a duct unit, etc., and the indoor unit 1 is installed at the top or upper part of the indoor room.

[0051] Refer to Figure 3 , taking the indoor wall-mounted unit as an example, the indoor wall-mounted unit is usually installed at positions such as the indoor wall surface. Again, for example, the indoor cabinet unit (not shown in the figure) is also a form of the indoor unit 1 of the indoor unit 1.

[0052] Taking the split machine as an example, the air conditioner includes an indoor unit 1 and an outdoor unit 2. Among them, the outdoor unit 2 is usually set outdoors for heat exchange with the indoor environment.

[0053] In addition, as shown in Figure 3 , the air conditioner is equipped with a controller to control the operation of each component in the internal air conditioner, so that each component of the air conditioner operates to achieve each predetermined function of the air conditioner. Among them, a control device 200 is also attached to the air conditioner. Exemplarily, the control device 200 is specifically set as a remote controller, and the remote controller has functions such as communicating with the controller using infrared rays or other communication methods. The remote controller is used for users to perform various controls on the air conditioner to realize the interaction between the user and the air conditioner.

[0054] The indoor unit 1 of the air conditioner in the specific embodiment of the present invention is set at the top or upper part of the indoor. Generally speaking, the installation height of the indoor unit 1 is higher than the user's activity area. The indoor unit 1 includes an air return opening and an air outlet communicating with the indoor. The indoor air passes through the air return opening into the indoor unit 1 and flows back into the indoor through the air outlet.

[0055] The refrigerant circulation circuit in the specific embodiment of the present invention circulates the refrigerant in a circuit composed of a compressor, a condenser, an electronic expansion valve, and an evaporator. One of the condenser and the evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger. The indoor heat exchanger is used for heat exchange with the air in the indoor unit 1, and the outdoor unit 2 heat exchanger is used for heat exchange with the air in the outdoor unit 2, so as to meet the refrigeration or heating requirements of the air conditioner.

[0056] The indoor unit 1 further includes an indoor fan, which is arranged near the return air outlet or the air outlet of the indoor heat exchanger and is used to send the heat-exchanged air into the room. The indoor fan includes multiple gears for changing the air outlet speed of the air flow at the air outlet.

[0057] A wind deflector is arranged at the position of the air outlet. By changing the relative rotation angle between the wind deflector and the air outlet, the outflow direction of the air flowing through the air outlet is adjusted, thereby affecting the air temperature stratification in the room.

[0058] In the specific embodiment shown in the present invention, the air conditioner 10 further includes a controller, which is configured, for example, as the controller 71 described in any one of the above embodiments.

[0059] Figure 5 It is a circuit schematic diagram of a single-tone buzzer provided by a specific embodiment of the present invention. Figure 6 It is a circuit schematic diagram of a melody buzzer provided by a specific embodiment of the present invention. The following combines Figure 5 and Figure 6 to describe the playback device 12 of the air conditioner 10 provided by the embodiment of the present invention. In Figure 5 and Figure 6 , the buzzer is used to represent the playback device 12. A buzzer is an electronic component that emits a sound similar to a buzzer. Its main function is to convert an electronic signal into a sound signal for output. The buzzer needs to use the buzzer circuit of the air conditioner to play. The buzzer circuit includes a single-tone buzzer and a melody buzzer.

[0060] It can be understood that this specific embodiment and Figure 5 and Figure 6 are only examples for illustration and are not limited to the type of the playback device 12.

[0061] In a specific embodiment of the present invention, Figure 5 The shown single-tone buzzer is composed of a frequency input terminal BUZ1, a voltage-dividing resistor R1, a triode T1, a sound generator B1, a base input resistor R2, and a bias resistor R3 between the base and the emitter. A PWM (Pulse Width Modulation) wave can be input through the frequency input terminal BUZ1 to make the generator generate sound. When the frequency of the PWM wave input to BUZ1 is different, the pitch of the sound is different; when the duty cycle of the input PWM wave is different, the loudness of the sound is different.

[0062] In a specific embodiment of the present invention, in Figure 5In the single - tone buzzer shown, when a high - level signal is input to the frequency input terminal BUZ1, the base and emitter of the triode T1 receive a forward - bias voltage, and the triode T1 conducts. The 12V power supply supplies power to the sound generator B1. When a low - level signal is input, there is no forward - bias voltage between the base and emitter of the triode T1, and the triode T1 cuts off. The 12V power supply cuts off the power supply to the sound generator B1. When a PWM wave with a certain frequency is input to the frequency input terminal BUZ1, the power supply to the sound generator B1 is turned on and off at this frequency, and the sound generator emits a sound of the corresponding frequency. The resistor R1 is connected in parallel across the sound generator B1 to play a voltage - dividing role. The resistor R2 is connected to the base of T1 to play a current - limiting role. The resistor R3 is connected between the base and emitter of T1 to play a voltage - dividing role.

[0063] Figure 7 It is a schematic diagram of PWM and duty cycle provided by a specific embodiment of the present invention. As Figure 7 shown, the waveform of PWM is a square wave with a variable duty cycle. The duty cycle refers to the ratio of the high - level time Ton to the PWM cycle time T within a PWM cycle time T.

[0064] In a specific embodiment of the present invention, Figure 6 the beautiful - tone buzzer shown is composed of a frequency input terminal BUZ1, a beat input terminal BUZ2, bias resistors R4, R7, R12 between the base and emitter, triodes T2, T3, T4, a sound generator B2, base input resistors R5, R6, R1, series resistors R8, R9, R10, and an electrolytic capacitor C1.

[0065] In a specific embodiment of the present invention, in Figure 6 the beautiful - tone buzzer shown, when a high - level signal is input to BUZ2, the base and emitter of the triode T3 obtain a positive - bias voltage, and T3 conducts. Then, T2 is a PNP - type triode. After T3 conducts, T2 obtains a positive - bias voltage between the emitter and the base, and T2 also conducts. Then, the 12V power supply supplies power to the sound generator B2 and also charges the capacitor C1. When a low - level signal is input to BUZ2, both triodes T2 and T3 cut off. The 12V power supply no longer supplies power to B2, and the capacitor C1 supplies power to B2. However, the current of the capacitor C1 continuously decreases, so the sound of the buzzer gradually weakens, producing a beautiful - tone effect. The brightness of the sound can be changed by inputting different duty cycles to BUZ2. The resistors R4, R7, R12 are respectively connected in parallel between the base and emitter of the triodes T2, T3, T4. The resistors R5, R6, R1 are respectively connected in series to the bases of the triodes T2, T3, T4. The resistor R8 is connected in series between the collector of the triode and the sound generator B2. The resistor R9 is connected in series between the capacitor C1 and the collector of the triode T4. The resistor R10 is connected in parallel across the sound generator B2.

[0066] In a specific embodiment of the present invention, Figure 6 In the American accent buzzer shown, when BUZ2 continuously inputs a low level, both triodes T2 and T3 will be cut off because there is no forward biasing voltage. The 12V power supply will no longer supply power to B2, and the capacitor C1 will not be charged. Even if a PWM wave with a certain frequency is input to the frequency input terminal BUZ1, the buzzer will not sound.

[0067] In a specific embodiment of the present invention, Figure 6 In the American accent buzzer shown, BUZ2 can continuously input a high level. When the PWM wave input to BUZ1 has different frequencies, the pitch of the sound changes; when the duty cycle of the input PWM wave is different, the brightness of the sound is different.

[0068] In a specific embodiment of the present invention, Figure 6 In the American accent buzzer shown, another method can also be adopted. When the duty cycle of the PWM wave input to BUZ1 remains unchanged and the duty cycle of the PWM input to BUZ2 is changed, the voltage across the sound generator can be changed, and the brightness of the sound can also be changed.

[0069] Figure 8 FIG. is a schematic diagram of the indoor unit of a wall-mounted air conditioner provided by a specific embodiment of the present invention. Figure 9 FIG. is a schematic diagram of a cabinet-type air conditioner of a wall-mounted air conditioner provided by a specific embodiment of the present invention. As shown in Figure 8 and Figure 9 shown, in a specific embodiment of the present invention, the buzzer circuit of the air conditioner can be placed on the indoor main control board of the air conditioner or on the indoor display board of the air conditioner, and the positions of the indoor main control board and the indoor display board; similarly, for machines such as mobile air conditioners, vehicle-mounted air conditioners, and dehumidifiers, the buzzer circuit can also be placed on the indoor main control board of the air conditioner or on the indoor display board of the air conditioner, which will not be elaborated here.

[0070] To facilitate the subsequent description of the specific principle of the music playback mode of the air conditioner 10 provided by the embodiments of the present invention, it is necessary to first introduce music theory knowledge.

[0071] 1) Introduction to music score Figure 10 FIG. is a schematic diagram of a music score provided by a specific embodiment of the present invention. As shown in Figure 10 shown, as is well known, music is played according to a music score. A music score consists of a key signature, a time signature P, a tempo S, note numbers, a time value SZ, a pitch class G (how many octaves higher or lower), etc., which are called the characteristic values of music.

[0072] Definition of musical key: It is to select and determine a key suitable for expressing the content or performance according to the content of different musical works. The key is the position of the pitch name of "do". For example, if 1 = C, then playing the C note as "do" is called the C key. If 1 = D, that is, playing or singing the D note as "do", it is called the D key, and so on.

[0073] Definition of musical time signature: Usually represented by a fraction, the number on the numerator represents the number of beats per measure, and the number on the denominator represents what note is counted as one beat. Figure 10 In the musical score shown, the time signature P is 4 / 4, indicating that there are 4 beats per measure, with a quarter note counted as one beat.

[0074] Definition of the speed S of music: It represents how many beats should be played in one minute. Figure 10 In the musical score shown, 120 beats should be played in one minute.

[0075] Definition of note numbers: They represent the pitch in music, where 1 represents do, 2 represents re, 3 represents mi, 4 represents fa, 5 represents so, 6 represents la, and 7 represents si.

[0076] Definition of the duration SZ of a note: It represents the time occupied by each beat. If the number has no underline or extension line, it represents the duration of one beat; if there is one underline under the number, the duration is halved, that is, the duration of half a beat; if there are two underlines under the number, the duration is halved again, that is, the duration of a quarter beat; and so on; if there is an extension line after the note number, it represents an extension of the duration of the note. If there is one extension line after the number, the duration is increased by one beat, that is, the duration of 2 beats; if there are two extension lines after the number, the duration is increased by one more beat, that is, the duration of 3 beats; and so on.

[0077] Definition of the pitch class of music: It represents whether this note is a high pitch, a low pitch, or a middle pitch. When there is no dot above or below the note number, it represents the pitch class as the middle pitch, that is, the note in the octave where the key is defined as 1 = C. If there is one dot below the number, it represents the pitch class one octave lower; if there are 2 dots, it represents the pitch class two octaves lower, and so on; conversely, if there is one dot above the number, it represents the pitch class one octave higher; if there are 2 dots, it represents the pitch class two octaves higher, and so on.

[0078] 2) Introduction to the relationship between time signature and strong and weak beats: The musical time signature represents the rhythm of music. The notes in each measure have differences in strength. Generally speaking, the position where the strong beat is located represents a strong sound, and the weak beat represents a weak sound. The strong beat generally represents the position of the drumbeat. Figure 11 This is a diagram showing the relationship between the time signature and strong and weak beats provided by a specific embodiment of the present invention. As Figure 11 shown, in the specific embodiment of the present invention, the corresponding relationship is as follows: 2 / 4 time signature: The strong-weak relationship is strong on the first beat and weak on the second beat; corresponding to the music: strong-weak.

[0079] 3 / 4 time signature: The strong-weak relationship is strong on the first beat, weak on the second beat, and weak on the third beat; strong-weak-weak.

[0080] 4 / 4 time signature: The strong-weak relationship is strong on the first beat, weak on the second beat, moderately strong on the third beat, and weak on the fourth beat; corresponding to the music: strong-weak-medium strong-weak.

[0081] 3 / 8 time signature: The strong-weak relationship is strong on the first beat, weak on the second beat, and weak on the third beat; corresponding to the music: strong-weak-weak.

[0082] 6 / 8 time signature: The strong-weak relationship is strong on the first beat, weak on the second beat, weak on the third beat, moderately strong on the fourth beat, weak on the fifth beat, and weak on the sixth beat; corresponding to the music: strong-weak-weak-medium strong-weak-weak.

[0083] 3 / 4 time signature + 2 / 4 time signature: The strong-weak relationship is strong on the first beat, weak on the second beat, weak on the third beat, moderately strong on the fourth beat, and weak on the fifth beat; corresponding to the music: strong-weak-weak-medium strong-weak.

[0084] 2 / 4 time signature + 3 / 4 time signature: The strong-weak relationship is strong on the first beat, weak on the second beat, moderately strong on the third beat, weak on the fourth beat, and weak on the fifth beat; corresponding to the music: strong-weak-medium strong-weak-weak. There are also some pieces of music that do not satisfy Figure 11 the strong-weak relationship, such as backbeat processing, texture strong beats, harmony strong beats, dissonant strong beats, style strong beats (music types such as jazz and blues). Then, it is necessary to adjust the strong beats and weak beats according to the actual music.

[0085] 3) Figure 12 is the international standard pitch and frequency comparison table provided by a specific embodiment of the present invention. As Figure 12 shown, Figure 10 in the shown numbered musical notation with the key set to 1 = C, the sound frequency corresponding to do is 261 Hz, and the frequencies corresponding to re, mi, fa, so, la, and si are 293 Hz, 329 Hz, 349 Hz, 392 Hz, 440 Hz, and 493 Hz respectively.

[0086] The following combines the above music theory knowledge to explain the specific principle of the music playback mode of the air conditioner 10 provided by the embodiments of the present invention.

[0087] In an embodiment of the present invention, when determining the target beat time according to the musical score of the preset music, the controller 71 is configured to: construct a music score - time mapping relationship table, wherein the music score - time mapping relationship table includes the corresponding mapping relationships between different music score parameters and the beat time, and the music score parameters include the time signature, the tempo of the beat, and the note duration; based on the preset music score - time mapping relationship table, obtain the target beat time corresponding to the music score of the preset music.

[0088] In a specific embodiment, the music score - time mapping relationship table includes the corresponding mapping relationships between different music score parameters and the beat time. The music score parameters include the time signature, the tempo of the beat, and the note duration. By comparing the music score - time mapping relationship table, the controller 71 can obtain the target beat time corresponding to the music score of the preset music. Specifically, the music score - time mapping relationship table can be constructed by the operator and stored in the controller 71 for the controller 71 to call conveniently.

[0089] In a specific embodiment of the present invention, as Figures 5 - 6 shown, the do - re - mi - fa - so - la - si performance can be carried out through the buzzer circuit, and the time Tword of the buzzer sounding is determined by the time signature, the tempo of the beat, and the note duration.

[0090] Specifically, for the air conditioner 10 provided according to the embodiment of the present invention, the controller 71 first constructs a music score - time mapping relationship table including the corresponding mapping relationships between different music score parameters and the beat time. The music score parameters include the time signature, the tempo of the beat, and the note duration. Then, based on the preset music score - time mapping relationship table, the target beat time corresponding to the music score of the preset music can be obtained, so that the playback device 12 of the air conditioner 10 can perform music performance playback according to the musical score of the preset music, which helps to improve the beat accuracy of the music performance of the air conditioner 10, thereby improving the entertainment of the air conditioner 10 and thus improving the user experience.

[0091] In an embodiment of the present invention, when constructing the music score - time mapping relationship table, the controller 71 is configured to: the beat time corresponding to the time signature in the music score is Tword = 60 / S SZ, where S is the tempo of the beat and SZ is the note duration.

[0092] In a specific embodiment of the present invention, as Figures 5 - 6 shown, the do - re - mi - fa - so - la - si performance can be carried out through the buzzer circuit, and the time Tword of the buzzer sounding is determined by the time signature, the tempo of the beat, and the note duration. The calculation formula for the buzzer sounding time Tword is as follows: sounding time Tword = 60 / S SZ, unit: second. Specifically, taking 5 this character as an example: it has an underscore, and the corresponding time value is half a beat, and the sounding time is Tword = 60 / 120 0.5 = 0.25 second.

[0093] Specifically, according to the air conditioner 10 provided by the embodiment of the present invention, the controller 71 constructs a tone spectrum and time mapping relationship table including the corresponding mapping relationship between different tone spectrum parameters and beat times according to the row beat speed and note time value, which helps to obtain the target beat time corresponding to the tone spectrum of the preset music based on the preset tone spectrum and time mapping relationship table subsequently. Furthermore, the playback device 12 of the air conditioner 10 can perform music performance playback according to the music score of the preset music, which helps to improve the beat accuracy of the music performance of the air conditioner 10, thereby improving the entertainment of the air conditioner 10 and thus improving the user experience.

[0094] In an embodiment of the present invention, when determining the target frequency according to the key of the preset music, the controller 71 is configured to: based on the preset key and frequency mapping relationship table, obtain the target frequency corresponding to the key of the preset music, where the key and frequency mapping relationship table includes the corresponding mapping relationship between different keys and frequencies.

[0095] In a specific embodiment, the key and frequency mapping relationship table includes the corresponding mapping relationship between different keys and frequencies. By comparing the key and frequency mapping relationship table, the controller 71 can obtain the target frequency corresponding to the key of the preset music. Specifically, the key and frequency mapping relationship table can be preset by the operator and stored in the controller 71 for the controller 71 to call conveniently.

[0096] In a specific embodiment of the present invention, the key and frequency mapping relationship table is, for example, Figure 12 the international standard pitch and frequency comparison table shown. Specifically, Figure 10 for the numbered musical notation shown, if the key is 1 = C. Query Figure 12 the pitch and frequency comparison table, the sound frequency corresponding to do is 261 Hz, and the frequencies corresponding to re, mi, fa, so, la, si are 293 Hz, 329 Hz, 349 Hz, 392 Hz, 440 Hz, 493 Hz respectively; if the key is 1 = D, according to Figure 12 it, the sound frequency corresponding to do is 293 Hz, and the frequencies corresponding to re, mi, fa, so, la, si are 329 Hz, 370 Hz, 392 Hz, 440 Hz, 493 Hz, 554 Hz respectively.

[0097] In a specific embodiment of the present invention, when there is a dot above the music number in numbered musical notation, it rises by one octave; when there is a dot below, it drops by one octave. Specifically, when 1 = C, the frequency corresponding to 1 is 261 Hz, the corresponding frequency is 823 Hz, and the frequency corresponding to 1 is 130 Hz. Each note number in the musical score can find the corresponding frequency according to the Figure 12 international standard pitch and frequency comparison table as shown.

[0098] Specifically, that is, according to the air conditioner 10 provided by the embodiment of the present invention, the controller 71 obtains the target frequency corresponding to the key of the preset music based on the preset key and frequency mapping relationship table, so that the playback device 12 of the air conditioner 10 can perform music performance playback according to the key of the preset music, which helps to improve the key accuracy of the music performance of the air conditioner 10, thereby improving the entertainment of the air conditioner 10 and thus improving the user experience.

[0099] In an embodiment of the present invention, when controlling the playback device 12 to play music by combining the target beat time and the target frequency, the controller 71 is configured to: generate a PWM wave signal by combining the target beat time and the target frequency; input the PWM wave signal into the playback device 12 so that the playback device 12 plays music according to the PWM wave signal.

[0100] In an embodiment of the present invention, the playback device 12 includes a buzzer, and the buzzer includes a first buzzer and / or a second buzzer. Among them, both the first buzzer and the second buzzer include a frequency input terminal, and the second buzzer further includes a beat input terminal. Among them, the frequency input terminal and the beat input terminal are both used to receive the PWM wave signal.

[0101] In a specific embodiment of the present invention, the playback device 12 is a buzzer, and the buzzer includes a first buzzer and / or a second buzzer. The first buzzer is, for example, a single-tone buzzer, and the second buzzer is, for example, a melody buzzer. As mentioned above, both the single-tone buzzer and the melody buzzer include a frequency input terminal BUZ1, and the melody buzzer further includes a beat input terminal BUZ2. Inputting the PWM wave corresponding to the frequency into the input port of BUZ1 can obtain the corresponding sound. The specific principle has been described above and will not be elaborated here.

[0102] Specifically, according to the air conditioner 10 provided by the embodiment of the present invention, when the controller 71 receives a first control instruction for instructing the air conditioner 10 to enter the music playback mode, it controls the air conditioner 10 to enter the music playback mode. In the music playback mode, it determines the target beat time according to the score of the preset music, determines the target frequency according to the key of the preset music, and combines the target beat time and the target frequency to generate a PWM wave signal; inputs the PWM wave signal into the playback device 12, so that the playback device 12 plays music according to the PWM wave signal, so that the playback device 12 of the air conditioner 10 plays music according to the score and key of the preset music, improving the richness and accuracy of the music performance of the air conditioner 10, thereby improving the entertainment of the air conditioner 10 and thus improving the user experience.

[0103] In an embodiment of the present invention, when inputting the PWM wave signal into the playback device 12 to enable the playback device 12 to play music, the controller 71 is configured to: adjust the duty cycle of the PWM wave signal to control the sound brightness of the playback device 12 when playing music.

[0104] In a specific embodiment of the present invention, the playback device 12 is a buzzer, and the buzzer includes a first buzzer and / or a second buzzer. The first buzzer is, for example, a single-tone buzzer, and the second buzzer is, for example, a beautiful-sound buzzer. As mentioned above, both the single-tone buzzer and the beautiful-sound buzzer include a frequency input terminal BUZ1, and the beautiful-sound buzzer also includes a beat input terminal BUZ2. Inputting the PWM wave corresponding to the frequency into the BUZ1 input port can obtain the corresponding sound. By adjusting the duty cycle of the PWM wave signal, the sound brightness of the single-tone buzzer or the beautiful-sound buzzer can be adjusted. The specific principle has been described above and will not be elaborated here.

[0105] Specifically, according to the air conditioner 10 provided by the embodiment of the present invention, when the controller 71 receives a first control instruction for instructing the air conditioner 10 to enter the music playback mode, it controls the air conditioner 10 to enter the music playback mode. In the music playback mode, it determines the target beat time according to the score of the preset music, determines the target frequency according to the key of the preset music, and combines the target beat time and the target frequency to generate a PWM wave signal; inputs the PWM wave signal into the playback device 12, so that the playback device 12 plays music according to the PWM wave signal, so that the playback device 12 of the air conditioner 10 plays music according to the score and key of the preset music, improving the richness and accuracy of the music performance of the air conditioner 10. At the same time, the controller 71 can also adjust the duty cycle of the PWM wave signal to control the sound brightness of the playback device 12 when playing music, so that the sound brightness meets the needs of the people, improving the comfort of the music performance of the air conditioner 10, thereby further improving the entertainment of the air conditioner 10 and thus further improving the user experience.

[0106] In one embodiment of the present invention, the beat includes a strong beat and a weak beat; when adjusting the duty cycle of the PWM wave signal to control the sound brightness of the music playback by the playback device 12, the controller 71 is further configured to: adjust the duty cycle of the PWM wave signal to control the playback device 12 to perform music playback at the same sound brightness according to the strong beat and the weak beat; or, adjust the duty cycle of the PWM wave signal to control the playback device 12 to perform music playback at different sound brightnesses according to the strong beat and the weak beat.

[0107] In a specific embodiment, when the PWM wave frequency is constant, the sound brightness can be adjusted by changing the duty cycle. There are two ways to adjust the sound brightness. One is to use the same duty cycle for all performances without distinguishing between strong and weak sounds; the other is to adjust the sound brightness according to the strong and weak beats of the music. Among them, when using the same duty cycle for all performances, by default, the PWM duty cycle input to BUZ1 is defined as 50%. The user can set this duty cycle through a remote control, a wired controller, an APP, etc.; when adjusting the sound brightness according to the strong and weak beats of the music, the sound brightness is: strong beat brightness ≥ second strong beat brightness > weak beat brightness.

[0108] Specifically, for the air conditioner 10 provided according to the embodiment of the present invention, when controlling the sound brightness of the music playback by the playback device 12, the controller 71 can adopt two control strategies: one is to adjust the duty cycle of the PWM wave signal to control the playback device 12 to perform music playback at the same sound brightness according to the strong beat and the weak beat; the other is to adjust the duty cycle of the PWM wave signal to control the playback device 12 to perform music playback at different sound brightnesses according to the strong beat and the weak beat; this not only makes the sound brightness meet the needs of the people and improves the comfort of the music performance of the air conditioner 10, but also can enrich the form of the sound brightness, highlight the change of strong and weak beats, improve the emotional richness of the performance, thereby further improving the entertainment of the air conditioner 10, and further improving the user experience.

[0109] In one embodiment of the present invention, the sound brightness of the playback device 12 includes a first sound brightness and a second sound brightness, where the first sound brightness is higher than the second sound brightness; when adjusting the duty cycle of the PWM wave signal to control the playback device 12 to perform music playback at different sound brightnesses according to the strong beat and the weak beat, the controller 71 is further configured to: adjust the duty cycle of the PWM wave signal to control the playback device 12 to perform music playback at the first sound brightness according to the strong beat; adjust the duty cycle of the PWM wave signal to control the playback device 12 to perform music playback at the second sound brightness according to the weak beat.

[0110] In a specific embodiment, the sound brightness of the playback device 12 includes a first sound brightness and a second sound brightness, and the first sound brightness is higher than the second sound brightness. The controller 71 controls the playback device 12 to play music according to the strong beats at the first sound brightness and controls the playback device 12 to play music according to the weak beats at the second sound brightness. That is, the stronger the beat, the higher the sound brightness of the playback device 12.

[0111] It is not difficult to understand that according to the further division of the beats, such as strong beats, sub-strong beats, weak beats, etc., the sound brightness of the playback device 12 can be correspondingly extended accordingly, as long as the stronger the beat, the higher the brightness of the display lamp.

[0112] In a specific embodiment, according to Figure 11 the relationship between the time signature and the strong and weak beats, based on the time signature of the music, the positions of the strong beats, sub-strong beats, and weak beats can be found. There are also some pieces of music, such as backbeat processing, texture strong beats, harmonic strong beats, dissonant strong beats, style strong beats (music types such as jazz and blues), which do not satisfy Figure 11 the rule, then the strong and weak beats need to be adjusted according to the actual music.

[0113] In a specific embodiment, by default, the PWM duty cycle of BUZ1 for strong beats is defined as 90%, the PWM duty cycle of BUZ1 for sub-strong beats is defined as 70%, and the PWM duty cycle of BUZ1 for weak beats is defined as 50%. Users can set the duty cycles of strong beats, sub-strong beats, and weak beats through a remote control, a wired controller, an APP, etc.

[0114] In a specific embodiment, as Figure 6 shown in the circuit of the beautiful sound buzzer, in addition to changing the sound brightness by inputting different duty cycle PWMs to BUZ1, the sound brightness can also be changed by inputting different duty cycles to BUZ2. The principle is that when BUZ2 is at a high level, the 12V power supply supplies power to the sound generator B2; when BUZ2 is at a low level, the capacitor C1 supplies power to the sound generator B2, and the voltage will slowly decrease. Therefore, inputting a certain duty cycle PWM to BUZ2 can adjust the actual voltage applied to the sound generator B2, thereby changing the sound brightness. By default, the PWM duty cycle of BUZ2 for strong beats is defined as 90%, the PWM duty cycle of BUZ2 for sub-strong beats is defined as 70%, and the PWM duty cycle of BUZ2 for weak beats is defined as 50%. Users can set the duty cycles of strong beats, sub-strong beats, and weak beats through a remote control, a wired controller, an APP, etc. Specifically, for the air conditioner 10 provided according to the embodiments of the present invention, when controlling the sound brightness of the music played by the playback device 12, the controller 71 can adjust the duty cycle of the PWM wave signal to control the playback device 12 to play music according to the strong beats at the first sound brightness, and adjust the duty cycle of the PWM wave signal to control the playback device 12 to play music according to the weak beats at the second sound brightness, so that the playback device 12 can play music according to the strong beats and weak beats at different sound brightness levels, thereby enriching the form of sound brightness, highlighting the changes between strong and weak beats, improving the emotional richness of the performance, further enhancing the entertainment of the air conditioner 10, and further improving the user experience.

[0115] In an embodiment of the present invention, the controller 71 is further configured to: receive a second control instruction for instructing the air conditioner 10 to enter the air conditioning mode; in response to the second control instruction, control the air conditioner 10 to exit the music playback mode, and after reaching a preset time, control the air conditioner 10 to re-enter the music playback mode.

[0116] In a specific embodiment, the functions of the air conditioning mode include, but are not limited to, turning on, turning off, temperature adjustment, wind speed adjustment, mode switching, turning on and off the electric auxiliary heating, etc.

[0117] In a specific embodiment, the operator can send a second control instruction through the terminal to turn on the air conditioning mode of the air conditioner 10. The terminal includes, but is not limited to, the air conditioner terminal and the user's handheld terminal, etc. The user's handheld terminal includes, but is not limited to, the mobile phone APP and the remote control, etc.

[0118] In a specific embodiment, the preset time is, for example, 3 seconds. That is, in response to the second control instruction, the controller 71 controls the air conditioner 10 to exit the music playback mode, and after 3 seconds, controls the air conditioner 10 to re-enter the music playback mode. Specifically, the preset time can be preset by the operator and stored in the controller 71 for easy calling by the controller 71.

[0119] Specifically, for the air conditioner 10 provided according to the embodiments of the present invention, when the controller 71 receives a second control instruction for instructing the air conditioner 10 to enter the air conditioning mode, it controls the air conditioner 10 to exit the music playback mode, and after reaching the preset time, controls the air conditioner 10 to re-enter the music playback mode, thereby avoiding unnecessary interruption and interference of the air conditioning mode on the music playback mode of the air conditioner 10, and helping to improve the intelligence of the air conditioner 10.

[0120] Figure 13 It is a flowchart of music playback control of an air conditioner display device according to a specific embodiment of the present invention, as Figure 13As shown, in this specific embodiment, the playback device 12 is a buzzer, and the following is a detailed description according to the flowchart: Step1: Activate the music performance function of the air conditioner buzzer.

[0121] Step2: Set the music performance method and select whether to distinguish the strength of the music beats.

[0122] In this specific embodiment, the duty cycle of the PWM wave at the BUZ1 input terminal for the strong beat, the sub-strong beat, and the weak beat can be set.

[0123] In this specific embodiment, if it is an American sound buzzer, the duty cycle of the PWM wave at the BUZ2 input terminal can also be set.

[0124] Step3: Continuously detect whether the original air conditioning command is received. If such a command is received, go to Step5; otherwise, go to Step4.

[0125] In this specific embodiment, the air conditioning command refers to the original function commands of the air conditioner except for the air conditioner light music display function, including power on, power off, temperature adjustment, wind speed adjustment, mode switching, electric auxiliary heat off / on, and air swing direction adjustment, etc.

[0126] Step4: Perform buzzer performance according to the music rules. Then go to Step7.

[0127] Step5: Pause the music performance function of the buzzer and make the buzzer sound according to the original rules of the air conditioning command. After the sounding time ends, go to Step6.

[0128] Step6: Delay for 3s, then go to Step4 and continue to make the buzzer sound according to the music rules.

[0129] Step7: Determine whether the command to turn off the music performance function of the buzzer is received from the remote control, the wired controller, the APP, etc. If it is received, enter Step9; otherwise, enter Step8.

[0130] Step8: Continue to perform buzzer performance according to the music rules.

[0131] Step9: Turn off the music performance function of the buzzer.

[0132] In summary, for the air conditioner 10 provided by the embodiment of the present invention, when the controller 71 receives a first control instruction for instructing the air conditioner 10 to enter the music playback mode, it controls the air conditioner 10 to enter the music playback mode. In the music playback mode, it determines the target beat time according to the musical score of the preset music, determines the target frequency according to the key of the preset music, and controls the playback device 12 to play music by combining the target beat time and the target frequency. As a result, the playback device 12 of the air conditioner 10 performs music performance playback according to the musical score and key of the preset music, improving the richness and accuracy of the music performance of the air conditioner 10, thereby enhancing the entertainment of the air conditioner 10 and improving the user experience.

[0133] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0134] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that: include: Air conditioner body; A playing device, the playing device is arranged on the air conditioner body and is used for playing music; A controller, the controller is connected to the playback device, and the controller is configured to: receiving a first control instruction for instructing the air conditioner to enter a music playing mode; In response to the first control instruction, the air conditioner is controlled to enter the music playing mode, so that in the music playing mode, the target beat time is determined according to the music score of the preset music, the target frequency is determined according to the tuning of the preset music, and the playing device is controlled to play music in combination with the target beat time and the target frequency.

2. The air conditioner according to claim 1, characterized in that: When determining the target beat time according to the music score of the preset music, the controller is configured to: Constructing a music spectrum and time mapping relationship table, wherein the music spectrum and time mapping relationship table includes corresponding mapping relationships between different music spectrum parameters and beat times, wherein the music spectrum parameters include time signature, line beat speed and note duration; Based on a preset music spectrum and time mapping relationship table, a target beat time corresponding to the music spectrum of the preset music is obtained.

3. The air conditioner according to claim 2, characterized in that: When constructing the spectrum-time mapping relationship table, the controller is configured as follows: The beat time corresponding to the time signature in the music score is Tword = 60 / S SZ, where S is the row tempo and SZ is the note duration.

4. The air conditioner according to claim 1, characterized in that: When determining the target frequency according to the pitch of the preset music, the controller is configured to: Based on a preset mapping relationship table between pitch and frequency, a target frequency corresponding to the pitch of the preset music is obtained, wherein the mapping relationship table between pitch and frequency includes corresponding mapping relationships between different pitches and frequencies.

5. The air conditioner according to claim 1, characterized in that: When controlling the playback device to play music in combination with the target beat time and the target frequency, the controller is configured to: Combining the target beat time and the target frequency, generating a PWM wave signal; The PWM wave signal is input into the playing device, so that the playing device plays music according to the PWM wave signal.

6. The air conditioner according to claim 5, characterized in that: The playback device includes a buzzer, and the buzzer includes a first buzzer and / or a second buzzer, wherein the first buzzer and the second buzzer both include a frequency input terminal, and the second buzzer also includes a beat input terminal, wherein the frequency input terminal and the beat input terminal are both used to receive the PWM wave signal.

7. The air conditioner according to claim 5, characterized in that: When the PWM wave signal is input into the playing device so that the playing device plays music, the controller is configured to: The duty cycle of the PWM wave signal is adjusted to control the sound brightness of the music played by the playing device.

8. The air conditioner according to claim 7, characterized in that: The beat includes a strong beat and a weak beat; When adjusting the duty cycle of the PWM wave signal to control the sound brightness of the music played by the playing device, the controller is further configured to: Adjusting the duty cycle of the PWM wave signal to control the playing device to play music according to the strong beat and the weak beat with the same sound brightness; or, The duty cycle of the PWM wave signal is adjusted to control the playing device to play music according to different sound brightnesses based on the strong beat and the weak beat.

9. The air conditioner according to claim 8, characterized in that: The sound brightness of the playback device includes a first sound brightness and a second sound brightness, wherein the first sound brightness is higher than the second sound brightness; When adjusting the duty cycle of the PWM wave signal to control the playback device to play music according to the strong beat and the weak beat with different sound brightness, the controller is further configured as follows: adjusting the duty cycle of the PWM wave signal to control the playing device to play music according to the strong beat and the first sound brightness; The duty cycle of the PWM wave signal is adjusted to control the playing device to play music according to the weak beat and the second sound brightness.

10. The air conditioner according to claim 1, characterized in that: The controller is also configured to: receiving a second control instruction for instructing the air conditioner to enter an air conditioning mode; In response to the second control instruction, the air conditioner is controlled to exit the music playing mode, and after a preset time is reached, the air conditioner is controlled to re-enter the music playing mode.

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