CN114517954A - Air conditioner and control method for actively reducing noise of air conditioner - Google Patents

Air conditioner and control method for actively reducing noise of air conditioner Download PDF

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Publication number
CN114517954A
CN114517954A CN202210325168.4A CN202210325168A CN114517954A CN 114517954 A CN114517954 A CN 114517954A CN 202210325168 A CN202210325168 A CN 202210325168A CN 114517954 A CN114517954 A CN 114517954A
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China
Prior art keywords
noise
human body
noise signal
output unit
signal
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CN202210325168.4A
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Chinese (zh)
Inventor
陈国平
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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Priority to CN202210325168.4A priority Critical patent/CN114517954A/en
Publication of CN114517954A publication Critical patent/CN114517954A/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F24F2120/12—Position of occupants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/40—Noise

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a control method for active noise reduction of the air conditioner, wherein the air conditioner comprises the following components: the device comprises an air outlet duct, a noise reduction device, a human body detection device and a controller, wherein the air outlet duct is provided with an air outlet; the noise reduction device is arranged at the air outlet and used for detecting a first noise signal generated in the air outlet duct and outputting a second noise signal with the phase opposite to that of the first noise signal; the human body detection device is used for detecting human body position information; the controller is connected with the human body detection device and the noise reduction device, and is configured to: the method comprises the steps of obtaining a first noise signal and human body position information, generating a driving control signal of a second noise signal according to the first noise signal, obtaining required angle information of the second noise signal output by a noise reduction device according to the human body position information, and controlling the noise reduction device according to the required angle information and the driving control signal so as to send the second noise signal to the position of a human body. Can carry out the regional noise reduction of pertinence according to the human position, realize making an uproar falls in the whole region.

Description

Air conditioner and control method for actively reducing noise of air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a control method for active noise reduction of the air conditioner.
Background
The diversification and development of air conditioner products enable the performance of the air conditioner products to become a main target of competition among manufacturers, and effectively solve the noise problem of the air conditioner to become a main battlefield of performance competition of companies. The problem of noise of the air conditioner is solved by adopting an active noise reduction technology, so that the purpose of noise reduction is achieved.
In the prior art, when an active noise reduction technology is adopted for noise reduction, noise is only reduced for certain specific areas, all noise in the whole house cannot be reduced, and noise superposition in certain areas may be caused, so that the noise in the areas is enhanced, and the user experience is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
The air conditioner generates a lot of noises during operation, the noises of the air conditioner are mainly generated by components such as a fan rotating speed, a compressor, a fan motor and the like, but the cooling and heating effects of an air conditioner product can be influenced when the noises of the air conditioner are reduced, so that the performance of the air conditioner cannot be influenced while the noises are effectively eliminated in order to avoid influencing users.
Therefore, an object of the present invention is to provide an air conditioner, which can intelligently sense a human body position, perform targeted regional noise reduction according to the human body position, and implement dynamic detection on a room, so as to achieve an effect of noise reduction in all regions and improve user experience.
The invention also aims to provide a control method for the active noise reduction of the air conditioner.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides an air conditioner including: the air outlet duct is provided with an air outlet; the noise reduction device is arranged at the air outlet and used for detecting a first noise signal generated in the air outlet duct and outputting a second noise signal with the phase opposite to that of the first noise signal; human body detection means for detecting human body position information; a controller connected with the human body detection device and the noise reduction device, the controller configured to: the method comprises the steps of obtaining a first noise signal and obtaining human body position information, generating a driving control signal of a second noise signal according to the first noise signal, obtaining required angle information of the second noise signal output by a noise reduction device according to the human body position information, and controlling the noise reduction device according to the required angle information and the driving control signal so as to send the second noise signal to the position of a human body.
According to the air conditioner provided by the embodiment of the invention, the human body detection device can capture the position information of the human body in real time, and the noise reduction device can acquire the first noise signal in real time and output the second noise signal with the phase opposite to that of the first noise signal. The controller can control the noise reduction device according to the human body position information and the first noise signal so as to send the second noise signal to the position of the human body. That is to say, the controller can be according to human position information, the direction and the angle that noise reduction device sent the second noise signal are adjusted to make the second noise signal can be sent to the position of human body, thereby can carry out the noise elimination to the surrounding environment of the position of human body in a pertinence way, and then can reach the effect of making an uproar of whole region, and can not cause the noise increase in some regions. And, set up human detection device and the device of making an uproar of falling in the air outlet department in air outlet duct, to the tuber pipe machine air conditioner, can not influence the performance of air conditioner when effectively eliminating the noise, promote user experience and feel.
In addition, the human body detection device and the noise reduction device can be combined and then applied to the air duct type air conditioner, the human body detection device and the noise reduction device can also be set to be independent of the air conditioner, and the human body detection device and the noise reduction device can be completely and independently sold and publicized when being set to be an independent product in a commercial aspect.
In some embodiments of the invention, the noise reducing device comprises: the frame body is arranged at the air outlet and provided with a front opening and a rear opening along the length direction of the air outlet, and the noise detection unit is arranged on the frame body, faces the rear opening and is used for detecting the first noise signal; the noise output unit is arranged on the frame body, faces the front opening and is used for sending out the second noise signal; the driving unit is arranged on the frame body, is electrically connected with the noise output unit and is used for driving the noise output unit to rotate and/or move along the length direction of the frame body when the noise output unit is started; the controller is connected with the driving unit and used for controlling the driving unit to act according to the required angle information.
In some embodiments of the present invention, the frame body is further provided with a guide rail extending along the length direction of the frame body; the driving unit includes: the first driving motor is used for driving the noise output unit to rotate when the first driving motor is started; and the second driving motor is used for driving the noise output unit to move along the guide rail when the second driving motor is started.
In some embodiments of the present invention, the controller is further configured to control the first driving motor to adjust a rotation angle of the noise output unit according to the required angle information to transmit the second noise signal to the position of the human body, or control the first driving motor and the second driving motor to simultaneously drive the noise output unit to rotate and move along the guide rail to transmit the second noise signal to the position of the human body according to the required angle information.
In some embodiments of the present invention, the controller is further configured to, when the position of the human body is changed, obtain new required angle information according to the changed position information of the human body, and control the noise reduction device according to the new required angle information. When the position of a person in a room changes, the person can be directly detected by the human body detection device, and the controller can calculate again based on the obtained human body position information to determine the position of the human body, so that the dynamic monitoring of the room is realized.
In some embodiments of the present invention, the frame body comprises a top plate, a bottom plate, a first side plate and a second side plate which are oppositely arranged; the guide rail is arranged on the top plate and arranged along the length direction of the top plate; the noise detection units, the noise output units and the first driving motors are all N in number, the N noise detection units are sequentially arranged along the length direction of the frame body and face the air outlet duct through the rear opening, the N first driving motors are arranged along the guide rail, the N noise output units and the N first driving motors are arranged in a one-to-one correspondence mode, and N is larger than or equal to 1; the nth noise output unit outputs a second noise signal with opposite phase according to the first noise signal detected by the nth noise detection unit, wherein N is less than or equal to N; the controller is further configured to obtain angle information of the second noise signal output by each of the noise output units according to the human body position information, and control the corresponding first driving motor to drive the rotation angle of the corresponding noise output unit according to the angle information.
The N noise output units are linked with the N first driving motors in a one-to-one correspondence mode, so that the noise output units and the first driving motors which are correspondingly arranged do not interfere with the operation between other noise output units and the first driving motors.
In some embodiments of the present invention, the top plate and the bottom plate are respectively provided with corresponding mounting holes, and the mounting holes are used for fixing the noise reduction device to the air outlet of the air outlet duct; and an air deflector is arranged at the front opening of the frame body.
In some embodiments of the present invention, a mounting plate is disposed between the top plate and the bottom plate of the front opening, and the human body detection device is disposed on the mounting plate. Wherein, set up human detection device on the mounting panel between the roof of the air outlet department in air outlet duct 1 and the bottom plate, to the tuber pipe machine air conditioner, can not influence the performance of air conditioner when effectively eliminating the noise, promote user experience and feel.
In order to achieve the above object, a second aspect of the present invention provides an active noise reduction control method for an air conditioner, where the air conditioner includes a noise reduction device and a human body detection device, and the noise reduction device is configured to detect a first noise signal generated in an air outlet duct of the air conditioner and output a second noise signal with a phase opposite to that of the first noise signal; the control method comprises the following steps: acquiring the first noise signal and acquiring the human body position information; generating a driving control signal of the second noise signal according to the first noise signal, and obtaining angle information required by the noise reduction device to output the second noise signal according to the human body position information; and controlling the noise reduction device according to the required angle information and the driving control signal so as to send the second noise signal to the position of the human body.
According to the control method for actively reducing the noise of the air conditioner, provided by the embodiment of the invention, the position change of the human body can be dynamically detected by capturing the position information of the human body in real time, and the direction and the angle of the noise reduction device for sending the second noise signal are adjusted according to the position information of the human body so as to send the second noise signal to the position of the human body, so that the noise can be eliminated in the surrounding environment of the position of the human body in a targeted manner, the effect of reducing the noise in all regions is further achieved, and the noise increase in some regions is avoided. And, set up human detection device and the device of making an uproar of falling in the air outlet department in air outlet duct, to the tuber pipe machine air conditioner, can not influence the performance of air conditioner when effectively eliminating the noise, promote user experience and feel.
In some embodiments of the present invention, the noise reduction apparatus includes a noise detection unit for detecting the first noise signal, a noise output unit for outputting the second noise signal, a first driving motor for driving the noise output unit to rotate, and a second driving motor for driving the noise output unit to move, and the noise reduction apparatus is controlled according to the required angle information and the driving control signal to send the second noise signal to a position where a human body is located, and the noise reduction apparatus includes: controlling the first driving motor according to the required angle information to adjust the rotation angle of the noise output unit, and controlling the noise output unit to output the second noise signal according to the driving control signal when the noise output unit reaches a target angle so as to send the second noise signal to the position of a human body; or controlling the first driving motor and the second driving motor according to the required angle information to simultaneously drive the noise output unit to rotate and move along the extending length direction of the air outlet, and controlling the noise output unit to output the second noise signal according to the driving control signal when the noise output unit reaches a target angle so as to send the second noise signal to the position of the human body.
In some embodiments of the present invention, the number of the noise detection unit, the noise output unit, and the first driving motor is N, and the control method further includes: and obtaining the required angle information of each noise output unit for outputting the second noise signal according to the human body position information, and controlling the corresponding first driving motor according to the required angle information so as to drive the rotation angle of the corresponding noise output unit.
In some embodiments of the invention, the control method further comprises: and when the position of the human body changes, acquiring new required angle information according to the changed position information of the human body, and controlling the noise reduction device according to the new required angle information.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an air conditioner;
fig. 2 is a block diagram of an air conditioner according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an air conditioner according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of a noise signal according to one embodiment of the present invention;
FIG. 5 is a schematic illustration of a front side of a noise reducer according to an embodiment of the present disclosure;
FIG. 6 is a block diagram of a noise reducer according to one embodiment of the present invention;
FIG. 7 is a schematic view of the back of a noise reducer according to one embodiment of the present invention;
fig. 8 is a flowchart of a control method for active noise reduction of an air conditioner according to an embodiment of the present invention;
fig. 9 is a flowchart of a control method for active noise reduction of an air conditioner according to another embodiment of the present invention;
fig. 10 is a flowchart of a control method for active noise reduction of an air conditioner according to still another embodiment of the present invention;
fig. 11 is a flowchart of a control method for active noise reduction of an air conditioner according to still another embodiment of the present invention;
fig. 12 is a flowchart of a control method for active noise reduction of an air conditioner according to still another embodiment of the present invention.
Reference numerals:
an air conditioner 10;
the device comprises an air outlet duct 1, a noise reduction device 2, a human body detection device 3 and a controller 4;
a housing 21, a noise detection unit 22, a noise output unit 23, and a drive unit 24;
a top plate 211, a bottom plate 212, a first side plate 213, a second side plate 214, a first driving motor 241, a second driving motor 242;
mounting plate M, mounting hole P.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In order to solve the problems that the global noise of the whole house cannot be weakened to be weakened when the air conditioner adopts a traditional active noise reduction mode, and the like, the embodiment of the invention provides an air conditioner and a control method for the active noise reduction of the air conditioner.
The air conditioner in the embodiment can be a common household air conditioner, an air duct air conditioner and the like, the operation mode and principle of the air duct air conditioner are the same as those of the common household air conditioner, and the air duct air conditioner is mainly taken as an example for explanation.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic view of an air conditioner, the basic structure of which can be understood in conjunction with fig. 1, the air conditioner performing a cooling/heating cycle of the air conditioner by using a compressor, a condenser (outdoor heat exchanger), an expansion valve, and an evaporator (indoor heat exchanger) in the present application. Wherein the refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a 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.
The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigerating effect by heat exchange with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
An air conditioner according to some embodiments of the present application includes an air conditioner indoor unit installed in an indoor space. The indoor unit, i.e., the indoor unit, is connected to an outdoor unit, i.e., the outdoor unit, installed in an outdoor space through a pipe. The outdoor unit of the air conditioner may be provided with a compressor, an outdoor heat exchanger, an outdoor fan, an expander, and the like for a refrigeration cycle, and the indoor unit of the air conditioner may be provided with an indoor heat exchanger and an indoor fan.
An air conditioner according to an embodiment of the present invention will be described with reference to fig. 2 and 3. Fig. 2 is a block diagram of an air conditioner according to an embodiment of the present invention; fig. 3 is a schematic view of an air conditioner according to an embodiment of the present invention.
The air conditioner 10 of the present embodiment takes an air duct air conditioner as an example, and the air conditioner 10 includes an air outlet duct 1, a noise reduction device 2, a human body detection device 3, and a controller 4, where the controller 4 is not shown in fig. 3.
In some embodiments, the air outlet duct 1 has an air outlet for air outlet. The air conditioner 10 of the present embodiment is exemplified by a ducted air conditioner.
It can be understood that, when the ducted air conditioner is installed, the ventilation pipeline of the indoor unit is generally hidden in the building, only the air outlet is exposed in the indoor environment, the pipeline of the air outlet duct 1 connected to the air outlet of the ducted air conditioner is long, and noise generated by the operation of the air conditioner 10, such as fan noise generated by the operation of a fan and wind noise generated by the flow of air, is mainly transmitted along the air outlet duct 1.
Based on the above, in some embodiments, for ducted air conditioners, as shown in fig. 3, the noise reducer 2 may be disposed at the air outlet. The noise reduction device 2 includes a frame 21, wherein the shape and size of the frame 21 can be adaptively set based on the shape and size of the air outlet, for example, the shape of the frame 21 can be set to be the same as the shape of the air outlet, and the size of the frame 21 can be set to be just capable of being sleeved in the air outlet, so that noise reduction processing of noise transmitted through the air outlet can be realized to the greatest extent.
Further, the noise reduction device 2 is configured to detect a first noise signal generated in the air outlet duct 1 and output a second noise signal having a phase opposite to that of the first noise signal. Specifically, the noise reduction device 2 may output a second noise signal by using an active sound source through detecting a waveform of a first noise signal entering an ear of a user and calculating, where the waveform of the second noise signal is the same as the waveform of the first noise signal in amplitude but opposite in phase, and the two waveforms are superimposed and output, and the output superimposed noise signal is attenuated, and the amplitude of the sound wave of the noise signal is reduced, so as to achieve the purpose of reducing noise.
In particular, the second noise signal may be generated from the first noise signal according to an embodiment of the invention described in fig. 5. Fig. 4 is a schematic diagram of a noise signal according to an embodiment of the invention. As shown in fig. 4, a curve a represents the waveform of the first noise signal, a curve B represents the waveform of the second noise signal, and a straight line C represents the waveform of the noise signal output by superimposing the first noise signal and the second noise signal. As can be seen from fig. 4, the waveform of the first noise signal is the same as the waveform of the second noise signal in amplitude but opposite in phase, and the total output noise signal is weakened after the two noise signals are superimposed, so that the noise reduction effect can be achieved after the two signals are superimposed and output.
Among them, in some embodiments, the human body detecting device 3 may be provided as a human body capturing sensor for detecting human body position information. For example, the human body detecting device 3 according to the embodiment of the present invention may be described with reference to fig. 5, and fig. 5 is a schematic view of the front surface of the noise reducing device according to an embodiment of the present invention. As shown in fig. 5, the noise reducer 2 is provided with a frame 21, and two sets of air deflectors are arranged in the frame 21, and the two sets of air deflectors are arranged along the length direction of the noise reducer 2. Wherein, a mounting plate M can be arranged between the two groups of air deflectors, and a mounting hole is arranged on the mounting plate M for mounting the human body detection device 3. For example, the human body detection device 3 may include at least two human body capturing sensors, and the two human body capturing sensors may be disposed on the mounting plate M between the two air deflectors, so as to not affect the working state of the air deflectors, and not be affected by the air swept by the air deflectors, and thus the human body detection device 3 can effectively capture any human body position information in real time.
Further, after the human body detection device 3 is started, the two human body capture sensors can be controlled to start scanning left and right, the scanning range can be set to be the space in the whole room, and the position of the human body in the room is determined according to the detected human body position information.
In some embodiments, as shown in fig. 2, the controller 4 is connected to the human body detection device 3 and the noise reduction device 2, and specifically, the controller 4 can receive the human body position information detected by the human body detection device 3 in real time and control the operating state of the noise reduction device 2 according to the human body position information.
The controller 4 may be a Processor having data Processing and analyzing functions, such as a Central Processing Unit (CPU) in an air conditioner, and the like, and the controller 4 may include a computing Unit, an executing Unit, a determining Unit, and the like for Processing and analyzing data.
Specifically, the controller 4 is configured to: acquiring a first noise signal and acquiring human body position information. The first noise signal is a noise signal generated when the air conditioner 10 operates. It is understood that when the air conditioner 10 is operated, the frequency and intensity of the generated noise may vary according to the operation mode of the air conditioner 10, the operation state of each component, such as the rotation speed of the fan, and the frequency and intensity of the first noise signal received by the air conditioner 10 may vary in real time.
In some embodiments, the controller 4 generates a driving control signal of the second noise signal according to the first noise signal, and obtains the required angle information of the noise reduction device 2 for outputting the second noise signal according to the human body position information.
Specifically, when the noise reducer 2 receives the first noise signal, the first noise signal waveform information may be acquired, the first noise signal may be analyzed to acquire parameters such as amplitude, intensity, and vibration frequency of the noise signal, and the noise signal may be extracted as an actual waveform curve, such as a curve a shown in fig. 5. And sends the waveform information to the controller 4, the controller 4 may calculate a waveform curve, such as curve B shown in fig. 5, having the same amplitude but opposite phase as the waveform of the first noise signal according to the received waveform information, and needs to control the noise reduction device 2 to output the second noise signal of such waveform, i.e., a driving control signal for generating the second noise signal according to the calculated waveform information.
And the controller 4 can also determine the human body position based on the received human body position information. For example, the controller 4 may also have a data storage function, such as obtaining a model of the indoor space and storing the model into the air conditioner 10 when the air conditioner 10 is first turned on. After receiving the human body position information, the processor 4 can determine the position of the human body in the indoor space according to the human body position information and calculate the corresponding position coordinate, so as to realize accurate positioning.
Further, when the noise reduction device 2 sends the second noise signal to the position of the human body, the second noise signal and the first noise signal transmitted to the periphery of the human body can be mutually offset, so that the targeted noise reduction of the acoustic environment around the human body is realized. Therefore, the controller 4 needs to control the noise reduction device 2 to send the second noise signal value according to the calculated position of the human body, so as to obtain the required angle information of the noise reduction device 2 outputting the second noise signal, which is used for adjusting the most suitable position of the noise reduction device 2 outputting the second noise signal value.
In other embodiments, the controller 4 further controls the noise reduction device 2 according to the desired angle information and the driving control signal to transmit the second noise signal to the position where the human body is located.
Specifically, the controller 4 sends a driving control signal to the noise reduction device 2 to drive the noise reduction device 2 to output the second noise signal, and the controller 4 controls the noise reduction device 2 according to the required angle information to increase the direction of the second noise signal output by the vertical noise reduction device, so as to send the second noise signal to the position of the human body. The second noise signal and the output position and the output direction of the output of the noise reduction device 2 are determined well, the phase position of the second noise signal which is sent to the position of the human body through calculation is appropriate, the position is reasonable, the noise is generated to the position of the human body, the phenomenon of overlapping of the regional noise cannot be caused, and accordingly the targeted regional noise reduction is achieved.
According to the air conditioner 10 provided by the embodiment of the invention, the human body detection device 3 can capture the position information of the human body in real time, and the noise reduction device 2 can obtain the first noise signal in real time and output the second noise signal with the phase opposite to that of the first noise signal. The controller 4 may control the noise reduction device 2 according to the human body position information and the first noise signal to transmit the second noise signal to the position where the human body is located. That is to say, the controller 4 can adjust the direction and angle of the noise reduction device 2 for sending the second noise signal according to the position information of the human body in real time, so as to send the second noise signal to the position of the human body, and can eliminate noise of the surrounding environment of the position of the human body in a targeted manner, thereby achieving the effect of noise reduction in the whole area, and not increasing noise in some areas. And, set up human detection device 3 and noise reduction device 2 in the air outlet department of air outlet duct 1, to the tuber pipe machine air conditioner, can not influence the performance of air conditioner when effectively eliminating the noise, promote user experience and feel.
In addition, the human body detection device 3 and the noise reduction device 2 can be combined and then applied to the ducted air conditioner, the human body detection device 3 and the noise reduction device 2 can also be set to be independent of the existence of the air conditioner 10, and in a commercial aspect, when the human body detection device 3 and the noise reduction device 2 are set to be a single product, the sale and the propaganda can be completely and independently carried out.
In some embodiments of the present invention, as shown in fig. 6, it is a block diagram of a noise reduction apparatus according to an embodiment of the present invention, wherein the noise reduction apparatus 2 includes a frame 21, a noise detection unit 22, a noise output unit 23, and a driving unit 24.
Specifically, the noise reducer 2 according to the embodiment of the present invention may be described with reference to fig. 3, 5 to 7, and fig. 7 is a schematic view of the back surface of the noise reducer according to an embodiment of the present invention.
In some embodiments, as shown in fig. 3, the frame 21 is disposed at the air outlet, wherein the shape and size of the frame 21 can be adaptively set based on the shape and size of the air outlet, so that the frame 21 can be exactly installed in the air outlet in a sleeved manner.
The frame body 21 includes a top plate 211, a bottom plate 212, and a first side plate 213 and a second side plate 214 that are disposed opposite to each other, and corresponding mounting holes P are respectively disposed on the top plate 211 and the bottom plate 212, and the mounting holes P are used for fixing the noise reduction device 2 to the air outlet of the air outlet duct 1. The frame body 21 is provided with a front opening and a rear opening along the length direction of the air outlet, air blown out by the operation of the air pipe machine air conditioner is propagated along the air outlet duct 1 and is blown into the indoor environment through the rear opening and the front opening in sequence, and the air deflector can be arranged at the front opening for guiding air.
Further, as shown in fig. 5 or fig. 7, a mounting plate M is disposed between the front open top plate 211 and the bottom plate 212, and the human body detecting device 3 is disposed on the mounting plate M. Specifically, the mounting plate M is provided with mounting holes for mounting the human body detection device 3. The human body detection device 3 is arranged on the mounting plate M arranged between the top plate 211 and the bottom plate 212, so that the working state of the air deflector is not influenced, and the influence of air sweeping of the air deflector is not influenced, and the human body detection device 3 can effectively capture the position information of any human body in real time.
As shown in fig. 7, the noise detection unit 22 is disposed on the frame 21 and opens toward the rear for detecting the first noise signal. It can be understood that the operation noise of the ducted air conditioner is mainly propagated along the air outlet duct 1, and when the noise is propagated to the rear opening, the noise can be directly detected by the noise detection unit 22. As can be seen from fig. 4, the emitted second noise signal is used for the first noise signal to be superimposed and then sent to the indoor environment to achieve the noise reduction effect, so the noise output unit 23 for emitting the second noise signal can be disposed at the position of the frame 21 and facing the front opening.
Specifically, the noise output unit 23 may be an active sound source such as a buzzer, a speaker, or the like, and the noise output unit 23 may output a second noise signal having an appropriate waveform according to the received driving control signal, and the second noise signal is superimposed on the first noise signal of the corresponding area, so that the noise of the area can be effectively attenuated.
As shown in fig. 6, the driving unit 24 is disposed on the frame 21 and electrically connected to the noise output unit 22, and is configured to drive the noise output unit 23 to rotate and/or move when activated. The driving unit 24 may include a driving motor, and the driving motor may change an operation state according to the driving signal, so as to drive the noise output unit 22 to rotate and/or move.
Specifically, as shown in fig. 7, the driving unit 24 includes a first driving motor 241 and a second driving motor 242, the first driving motor 241 is electrically connected to the noise output unit 23 for driving the noise output unit 23 to rotate when starting, for example, the first driving motor 241 may control the noise output unit 23 to rotate clockwise or counterclockwise by a preset angle according to the driving signal to adjust the direction in which the noise output unit 23 outputs the second noise signal.
In some embodiments, as shown in fig. 5 or fig. 7, the frame 21 is further provided with a guide rail extending along the length direction of the frame 21. The second driving motor 242 is provided in the frame body 21 for driving the noise output unit 23 to move along the guide rail at the time of starting. The first driving motor 241 and the noise output unit 23 are both disposed on the guide rail, and when the second driving motor 242 drives the noise output unit 23 to move along the guide rail, the first driving motor 241 and the noise output unit 23 can move on the guide rail along the length direction of the frame 21 at the same time, that is, the first driving motor 241 and the noise output unit 23 can realize free movement within a certain range.
Specifically, the second driving motor 242 may control the noise output unit 23 to move a preset distance on the guide rail along the length direction of the frame 21 according to the driving signal, adjust the direction of the second noise signal output by the noise output unit 23 in cooperation with the first driving motor 241, adjust the noise output unit 23 to the optimal position, so as to directly send the second noise signal output by the noise output unit 23 to the predetermined area, and superimpose the second noise signal with the first noise signal in the area, so that the acoustic environment in the area can be effectively subjected to targeted noise reduction.
In some embodiments, the controller 4 is connected to the driving unit 24 for controlling the driving unit 24 to act according to the required angle information.
As can be seen from the above, the required angle information is calculated according to the human body position information, and the required angle information includes preset angle information that the first driving motor 241 needs to control the noise output unit 23 to rotate and/or preset distance information that the second driving unit 242 needs to control the noise output unit 23 to move along the guide rail. Specifically, the controller 4 may send a driving signal to the first driving motor 241 and/or the second driving motor 242 according to the required angle information, and the first driving motor 241 and/or the second driving motor 242 may start operating in response to the driving signal to adjust the noise output unit 23 to an optimal position.
In some embodiments of the present invention, the controller 4 is further configured to control the first driving motor 241 to adjust a rotation angle of the noise output unit 23 according to the required angle information to transmit the second noise signal to the position where the human body is located.
Specifically, when the controller 4 determines that the required angle information includes preset angle information that the first driving motor 241 needs to control the noise output unit 23 to rotate, that is, it is determined that the noise output unit 23 is located at the optimal position of the guide rail at the time, and only the rotation angle of the noise output unit 23 needs to be adjusted, only the driving signal is sent to the first driving motor 241, the first driving motor 241 starts to operate to drive the noise output unit 23 to rotate by the preset angle, that is, the noise output unit 23 rotates towards the position of the human body, and finally, the noise output unit 23 is adjusted to the optimal sound production position, and at this time, the calculated second noise signal is sent to the position of the human body, so that the noise superposition cannot be caused, and the noise elimination can be effectively performed on the surrounding environment of the position of the human body.
Alternatively, in other embodiments, the first driving motor 241 and the second driving motor 242 are controlled according to the required angle information to simultaneously drive the noise output unit 23 to rotate and move along the guide rail, so as to transmit the second noise signal to the position where the human body is located.
Specifically, when the controller 4 determines that the required angle information includes preset angle information that the first driving motor 241 needs to control the rotation of the noise output unit 23 and preset distance information that the second driving unit 242 needs to control the movement of the noise output unit 23 along the guide rail, it is determined that the rotation angle of the noise output unit 23 needs to be adjusted at this time, and the position of the noise output unit 23 on the guide rail needs to be adjusted. The controller 4 can send a driving signal to the first driving motor 241 and the second driving motor 242 according to the required angle information, the first driving motor 241 starts to operate to drive the noise output unit 23 to rotate for a preset angle, the second driving motor 242 starts to operate to drive the noise output unit 23 to move along the guide rail for a preset distance, and finally the noise output unit 23 is adjusted to the optimal sounding position, at the moment, the calculated second noise signal is sent to the position of the human body, so that the superposition of noise cannot be caused, and the noise can be effectively eliminated for the surrounding environment of the position of the human body.
Further, in some embodiments, the controller 4 is further configured to, when the position of the human body changes, obtain new required angle information according to the changed position information of the human body, and control the noise reduction device 2 according to the new required angle information.
It can be known from the above that, the human body detection device 3 can be set as a human body capture sensor, and after the air conditioner 10 is powered on and operated, the human body capture sensor is always in a powered-on operation state, so that the human body position information can be detected in real time and fed back to the controller 4, when the position of a person in a room changes, the person can be directly detected by the human body detection device 3, and the controller 4 can recalculate based on the obtained human body position information to determine the position of the human body, thereby realizing the dynamic monitoring of the room.
Further, the controller 4 can also obtain the position and angle of the current noise output unit 23, calculate a preset angle at which the noise output unit 23 needs to rotate and a preset distance at which the noise output unit 23 needs to move along the guide rail according to the position and angle of the current noise output unit 23 and the position of the human body, and send a control signal to the first driving motor 241 and the second driving motor 242, so as to adjust the noise output unit 23 to the optimal sounding position, and can perform targeted noise reduction on the acoustic environment around the human body, thereby achieving the effect of noise reduction in the whole area.
In some embodiments of the present invention, the number of the noise detection units 22, the number of the noise output units 23, and the number of the first driving motors 241 are N, the N noise detection units 22 are sequentially arranged along the length direction of the frame 21 and face the inside of the air outlet duct 1 through the rear opening, the N first driving motors 241 are arranged along the guide rail, and the N noise output units 23 and the N first driving motors 241 are arranged in a one-to-one correspondence manner, where N is greater than or equal to 1. For example, the value of N may be set as desired, e.g., the value of N may be 1 or 2 or 3 or 4 or 5, etc.
Specifically, the noise output unit 23 and the first driving motor 241 are both provided on the guide rail, so that the noise output unit 23 and the first driving motor 241 can achieve a free movement within a certain range. And the N noise output units 23 are linked with the N first driving motors 241 in a one-to-one correspondence manner, so that the operations of the noise output units 23 and the first driving motors 241, which are correspondingly arranged, and the other noise output units 23 and the first driving motors 241 do not interfere with each other.
Further, in some embodiments, the nth noise output unit 23 outputs the second noise signal with an opposite phase according to the first noise signal detected by the nth noise detection unit 22, that is, the N noise output units 23 and the N noise detection units 22 may also be arranged in a one-to-one correspondence. Wherein N ≦ N, for example, the value of N may be set as desired, for example, the value of N may be 1 or 2 or 3 or 4 or 5. n represents the number of the noise output units 23 to which the controller 4 transmits the driving control signal, that is, the controller 4 may transmit the driving control signal to some of the noise output units 23 and may also transmit the driving control signal to all of the noise output units 23.
Specifically, the controller 4 may receive a first noise signal detected by any one or more of the noise detection units 22, generate a driving control signal of a second noise signal according to the first noise signal, and send the driving control signal to the corresponding noise output unit 23.
More specifically, as can be seen from fig. 4 in the above embodiment, the second noise signal output by the noise output unit 23 is always the same as the waveform amplitude of the first noise signal but opposite in phase, that is, when the first noise signal changes, the controller 4 may adjust the second noise signal output by the noise output unit 23 in time to adapt to the change of the first noise signal, so that after the two noise signals are superimposed, the total output noise signal is reduced, and the noise reduction effect is achieved.
In some embodiments, the controller 4 is further configured to obtain angle information of the second noise signal output by each noise output unit 23 according to the human body position information, and control the corresponding first driving motor 241 to drive the rotation angle of the corresponding noise output unit 23 according to the angle information.
As shown in fig. 7, taking N equal to 4 as an example, after receiving the first noise signal, the controller 4 may determine one or more noise output units 23 to be driven according to the first noise signal, for example, the determined noise output units 23 may be marked. After receiving the human body position information, the controller 4 may output the required angle information of the second noise signal according to the noise reduction device 2 calculated by the human body position information, and drive the marked first driving motor 241 to act according to the required angle information, so as to drive the corresponding noise output unit 23 to rotate to a preset angle. Wherein, the operation of each first driving motor 241 may be set to not interfere with each other, that is, the operation of each noise output unit 23 may not interfere with each other to realize intelligent control.
In some embodiments of the present invention, a control method for actively reducing noise of an air conditioner is also provided, wherein the control method is applied to the air conditioner 10 of the above embodiments, as shown in fig. 2, the air conditioner 10 includes a noise reduction device 2 and a human body detection device 3, and the noise reduction device 2 is configured to detect a first noise signal generated in an air outlet duct 1 of the air conditioner 10 and output a second noise signal with a phase opposite to that of the first noise signal. Specifically, the process of the noise reduction apparatus 2 in this embodiment outputting the second noise signal with a phase opposite to that of the first noise signal according to the first noise signal can be understood by referring to fig. 4 and the related contents above, which is not described herein again.
Fig. 8 is a flowchart illustrating a method for controlling active noise reduction of an air conditioner according to an embodiment of the present invention, wherein the method for controlling active noise reduction of an air conditioner includes steps S1-S3, as follows.
And S1, acquiring the first noise signal and acquiring the human body position information.
The first noise signal is a noise signal generated when the air conditioner operates. It can be understood that, when the air conditioner is operated, the frequency and the intensity of the generated noise may be different due to different operation modes of the air conditioner and different operation states of various components, such as the rotation speed of the fan, and thus the frequency and the intensity of the first noise signal received by the air conditioner may be changed in real time.
And S2, generating a driving control signal of the second noise signal according to the first noise signal, and obtaining the required angle information of the second noise signal output by the noise reduction device according to the human body position information.
Specifically, when the noise reduction device receives the first noise signal, the first noise signal waveform information may be obtained, the first noise signal may be analyzed to obtain parameters such as amplitude, intensity, and vibration frequency of the noise signal, and the noise signal may be extracted as an actual waveform curve, such as curve a shown in fig. 5. In which a waveform curve having the same amplitude as that of the waveform of the first noise signal but opposite in phase, such as curve B shown in fig. 5, may be calculated from the received waveform information, and it is necessary to control the noise reduction device to output the second noise signal of such waveform, i.e., to generate a drive control signal of the second noise signal from the calculated waveform information.
And determining the position of the human body according to the received human body position information. For example, after receiving the human body position information, the position of the human body in the indoor space can be determined according to the human body position information, and corresponding position coordinates can be calculated, so that accurate positioning can be realized.
Further, when the noise reduction device sends a second noise signal to the position of the human body, the second noise signal and the first noise signal transmitted to the periphery of the human body can be mutually offset, so that the targeted noise reduction of the acoustic environment around the human body is realized. Therefore, the position of the human body where the noise reduction device sends the second noise signal value needs to be controlled according to the calculated position of the human body, so that the angle information required by the noise reduction device to output the second noise signal is obtained, and the angle information is used for adjusting the position where the noise reduction device outputs the second noise signal value to be the most suitable position.
And S3, controlling the noise reduction device according to the required angle information and the driving control signal to send a second noise signal to the position of the human body.
Specifically, the driving control signal is sent to the noise reduction device to drive the noise reduction device to output the second noise signal, and the noise reduction device is controlled according to the required angle information to improve the direction of the second noise signal output by the noise reduction device, so that the second noise signal is sent to the position of the human body. The second noise signal and the output position and the direction of the output of the noise reduction device are determined well, the phase position of the second noise signal which is sent to the position of the human body through calculation is appropriate, the position is reasonable, the noise is generated to the position of the human body, the phenomenon of overlapping of the regional noise cannot be caused, and accordingly the targeted regional noise reduction is achieved.
According to the control method for actively reducing the noise of the air conditioner, provided by the embodiment of the invention, the position change of the human body can be dynamically detected by capturing the position information of the human body in real time, and the direction and the angle of the noise reduction device for sending the second noise signal are adjusted according to the position information of the human body so as to send the second noise signal to the position of the human body, so that the noise can be eliminated in the surrounding environment of the position of the human body in a targeted manner, the effect of reducing the noise in all regions can be achieved, and the noise increase in some regions can not be caused. And, set up human detection device and the device of making an uproar of falling in the air outlet department in air outlet duct, to the tuber pipe machine air conditioner, can not influence the performance of air conditioner when effectively eliminating the noise, promote user experience and feel.
In some embodiments of the present invention, as shown in fig. 7, the noise reduction device 2 includes a noise detection unit 22 for detecting a first noise signal, a noise output unit 23 for outputting a second noise signal, a first driving motor 241 for driving the noise output unit 23 to rotate, and a second driving motor 242 for driving the noise output unit 23 to move.
Specifically, the noise output unit 23 and the first driving motor 241 are disposed on the guide rail such that the noise output unit 23 and the first driving motor 241 can achieve a free movement within a certain range.
As shown in fig. 9, which is a block diagram of a control method for actively reducing noise of an air conditioner according to another embodiment of the present invention, wherein the noise reduction device is controlled according to the required angle information and the driving control signal to send the second noise signal to the position of the human body, that is, the step S3 may specifically include step S31 or step S32.
And S31, controlling the first driving motor according to the required angle information to adjust the rotation angle of the noise output unit, and controlling the noise output unit to output a second noise signal according to the driving control signal when the noise output unit reaches the target angle, so as to send the second noise signal to the position of the human body.
Specifically, when the required angle information is determined to include preset angle information that a first driving motor needs to control rotation of a noise output unit, namely the noise output unit is determined to be in the best position of a guide rail at the moment, only the rotation angle of the noise output unit needs to be adjusted at the moment, only a driving signal is sent to the first driving motor, the first driving motor is started to operate to drive the noise output unit to rotate by the preset angle, namely the noise output unit rotates towards the position of a human body, the noise output unit is finally adjusted to the best sounding position, a second calculated noise signal is sent to the position of the human body at the moment, superposition of noise cannot be caused, and the noise can be effectively eliminated for the surrounding environment of the position of the human body.
And S32, controlling the first driving motor and the second driving motor according to the required angle information to simultaneously drive the noise output unit to rotate and move along the extending length direction of the air outlet, and controlling the noise output unit to output a second noise signal according to the driving control signal when the noise output unit reaches the target angle so as to send the second noise signal to the position of the human body.
Specifically, when it is determined that the required angle information includes preset angle information that the first driving motor needs to control the noise output unit to rotate and preset distance information that the second driving unit needs to control the noise output unit to move along the guide rail, it is determined that the rotation angle of the noise output unit needs to be adjusted at this time, and the position of the noise output unit on the guide rail also needs to be adjusted. The noise output unit is adjusted to the optimal sounding position, the calculated second noise signal is sent to the position of the human body at the moment, superposition of noise cannot be caused, and noise can be effectively eliminated from the surrounding environment of the position of the human body.
In some embodiments, the number of the noise detection units 22, the number of the noise output units 23, and the number of the first driving motors 241 are N, as shown in fig. 7, taking N equal to 4 as an example, 4 noise detection units 22 are sequentially arranged along the length direction of the frame 21 and face the inside of the air outlet duct 1 through the rear opening, 4 first driving motors 241 are arranged along the guide rail, and 4 noise output units 23 and 4 first driving motors 241 are arranged in a one-to-one correspondence manner.
In some embodiments of the present invention, as shown in fig. 10, the method for controlling active noise reduction of an air conditioner according to another embodiment of the present invention is a block diagram, wherein the method for controlling active noise reduction of an air conditioner further includes step S33.
And S33, acquiring the required angle information of each noise output unit for outputting the second noise signal according to the human body position information, and controlling the corresponding first driving motor according to the required angle information to drive the rotation angle of the corresponding noise output unit.
After receiving the first noise signal, one or more noise output units to be driven may be determined according to the first noise signal, and for example, the determined noise output units may be marked. After receiving the human body position information, the noise reduction device calculated according to the human body position information can output the required angle information of the second noise signal, and the marked first driving motor is driven to act according to the required angle information so as to drive the corresponding noise output unit to rotate to a preset angle. Wherein, the work of every first driving motor can be set up and do not disturb each other, and the work of every noise output unit does not disturb each other in order to realize intelligent control promptly.
As can be seen from fig. 4 and related contents in the above embodiment, the second noise signal output by the noise output unit is always the same as the first noise signal in waveform amplitude but opposite in phase, that is, when the first noise signal changes, the second noise signal output by the noise output unit is timely adjusted to adapt to the change of the first noise signal, so that after two kinds of noise signals are superimposed, the total output noise signal is weakened, and the noise reduction effect is achieved.
In other embodiments of the present invention, as shown in fig. 11, a flowchart of a control method for active noise reduction of an air conditioner according to another embodiment of the present invention is shown, where the control method further includes step S4, which is described in detail below.
And S4, when the position of the human body changes, acquiring new required angle information according to the changed position information of the human body, and controlling the noise reduction device according to the new required angle information.
According to the above content, the human body detection device can be set as a human body capturing sensor, when the air conditioner is powered on to operate, the human body capturing sensor is always in a power-on operation state, so that the human body position information can be detected in real time and fed back, when the position of a person in a room changes, the human body capturing sensor can be directly detected by the human body detection device, and the calculation can be carried out again based on the obtained human body position information to determine the position of the human body, so that the dynamic monitoring of the room is realized.
Furthermore, the preset angle required to rotate by the noise output unit can be calculated according to the position and the angle of the current noise output unit and the position of the human body, the preset distance required to move along the guide rail by the noise output unit is preset, and a control signal is sent to the first driving motor and the second driving motor to adjust the noise output unit to the optimal sounding position, so that the acoustic environment around the human body can be subjected to targeted noise reduction, and the effect of noise reduction in the whole area can be achieved.
In some embodiments of the present invention, as shown in fig. 12, it is a flowchart of a control method for active noise reduction of an air conditioner according to another embodiment of the present invention, wherein the control method further includes steps S101-S118, which are described as follows.
And S101, starting the air conditioner to run.
And S102, opening an active noise reduction function.
S103, the human body capturing sensor is started.
S104, the human body captures the sensor to scan left and right.
And S105, acquiring the position of the human body.
And S106, determining the position of the human body.
And S107, turning on a second driving motor.
And S108, moving the noise output unit, wherein the second driving motor drives the noise output unit to move along the guide rail.
And S109, starting the first driving motor.
And S110, rotating the noise output unit, wherein the first driving motor drives the noise output unit to rotate.
And S111, the position of the noise output unit is proper, and in the position, the second noise signal output by the noise output unit is just offset with the first noise signal of the area around the position where the human body is located.
And S112, inputting a first noise signal by the noise input unit.
S113, the controller acquires a first noise signal.
And S114, acquiring a second noise signal, wherein the controller calculates the waveform of the second noise signal according to the waveform of the first noise signal, and the waveform of the second noise signal is solitary and identical with the waveform of the first noise signal but opposite in phase.
S115, the noise output unit sends out a second noise signal. Specifically, steps S112-S115 are executed simultaneously with steps S103-S110, and the two controls cooperate with each other.
S116, the noise output unit outputs a second noise signal to any position, and the second noise signal output at the moment and the output position and direction are determined, so that the phase of the second noise signal which is sent to the position of the human body through calculation is proper, the position is reasonable, the second noise signal can be sounded to the position of the human body, the phenomenon of noise superposition of the region can not be caused, and the targeted regional noise reduction is realized.
And S117, judging whether the position of the human body is changed, if so, returning to the step S104, readjusting the position and the direction of the second noise signal output by the noise output unit, and if not, executing the step S118.
And S118, the noise output unit outputs the second noise signal at a specific position, namely, the position and the direction of the second noise signal output by the noise output unit are controlled to be unchanged, and the program runs stably.
When the control method for actively reducing noise of the air conditioner of the embodiment of the invention is applied to the air conditioner 10 of the embodiment of the first aspect, the position of the human body is captured in real time, and the direction and the angle of the second noise signal sent by the noise output unit are adjusted to send the second noise signal to the position of the human body, so that the ambient environment of the position of the human body can be specifically silenced, the effect of reducing noise in all regions can be achieved, and the defect that noise in some regions is increased in the traditional active noise reduction mode is overcome.
Other configurations and operations of the air conditioner 10 and the like according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. An air conditioner, comprising:
the air outlet duct is provided with an air outlet;
the noise reduction device is arranged at the air outlet and used for detecting a first noise signal generated in the air outlet duct and outputting a second noise signal with the phase opposite to that of the first noise signal;
human body detection means for detecting human body position information;
a controller connected with the human body detection device and the noise reduction device, the controller configured to: the method comprises the steps of obtaining a first noise signal and obtaining human body position information, generating a driving control signal of a second noise signal according to the first noise signal, obtaining required angle information of the second noise signal output by a noise reduction device according to the human body position information, and controlling the noise reduction device according to the required angle information and the driving control signal so as to send the second noise signal to the position of a human body.
2. The air conditioner according to claim 1, wherein the noise reducing means comprises:
a frame body arranged at the air outlet, the frame body is provided with a front opening and a rear opening along the length direction of the air outlet,
the noise detection unit is arranged on the frame body, faces the rear opening and is used for detecting the first noise signal;
the noise output unit is arranged on the frame body, faces the front opening and is used for sending out the second noise signal;
the driving unit is arranged on the frame body, is electrically connected with the noise output unit and is used for driving the noise output unit to rotate and/or move along the length direction of the frame body when the noise output unit is started;
the controller is connected with the driving unit and used for controlling the driving unit to act according to the required angle information.
3. The air conditioner according to claim 2,
the frame body is also provided with a guide rail extending along the length direction of the frame body;
the driving unit includes:
the first driving motor is used for driving the noise output unit to rotate when the first driving motor is started;
and the second driving motor is used for driving the noise output unit to move along the guide rail when the second driving motor is started.
4. The air conditioner according to claim 3, wherein the controller is further configured to control the first driving motor to adjust a rotation angle of the noise output unit according to the required angle information to transmit the second noise signal to a location where the human body is located, or control the first driving motor and the second driving motor to simultaneously drive the noise output unit to rotate and move along the guide rail according to the required angle information to transmit the second noise signal to the location where the human body is located.
5. The air conditioner according to claim 1, wherein the controller is further configured to obtain new required angle information from the changed human body position information when the human body position is changed, and to control the noise reduction device according to the new required angle information.
6. The air conditioner according to any one of claims 2 to 5,
the frame body comprises a top plate, a bottom plate, a first side plate and a second side plate which are oppositely arranged;
the guide rail is arranged on the top plate and arranged along the length direction of the top plate;
the noise detection units, the noise output units and the first driving motors are all N in number, the N noise detection units are sequentially arranged along the length direction of the frame body and face the air outlet duct through the rear opening, the N first driving motors are arranged along the guide rail, the N noise output units and the N first driving motors are arranged in a one-to-one correspondence mode, and N is larger than or equal to 1;
the nth noise output unit outputs a second noise signal with opposite phase according to the first noise signal detected by the nth noise detection unit, wherein N is less than or equal to N;
the controller is further configured to obtain angle information of the second noise signal output by each of the noise output units according to the human body position information, and control the corresponding first driving motor to drive the rotation angle of the corresponding noise output unit according to the angle information.
7. The air conditioner according to claim 6,
the top plate and the bottom plate are respectively provided with corresponding mounting holes, and the mounting holes are used for fixing the noise reduction device at an air outlet of the air outlet duct;
and the front opening of the frame body is provided with an air deflector.
8. The air conditioner according to claim 7, wherein a mounting plate is provided between the top plate and the bottom plate of the front opening, and the human body detecting device is provided on the mounting plate.
9. The control method for active noise reduction of the air conditioner is characterized in that the air conditioner comprises a noise reduction device and a human body detection device, wherein the noise reduction device is used for detecting a first noise signal generated in an air outlet duct of the air conditioner and outputting a second noise signal with the phase opposite to that of the first noise signal;
the control method comprises the following steps:
acquiring the first noise signal and acquiring the human body position information;
generating a driving control signal of the second noise signal according to the first noise signal, and obtaining angle information required by the noise reduction device to output the second noise signal according to the human body position information;
and controlling the noise reduction device according to the required angle information and the driving control signal so as to send the second noise signal to the position of the human body.
10. The method as claimed in claim 9, wherein the noise reduction device comprises a noise detection unit for detecting the first noise signal, a noise output unit for outputting the second noise signal, a first driving motor for driving the noise output unit to rotate, and a second driving motor for driving the noise output unit to move, and the method for controlling the noise reduction device according to the required angle information and the driving control signal to send the second noise signal to the position where the human body is located comprises:
controlling the first driving motor according to the required angle information to adjust the rotation angle of the noise output unit, and controlling the noise output unit to output the second noise signal according to the driving control signal when the noise output unit reaches a target angle so as to send the second noise signal to the position of the human body;
or the first driving motor and the second driving motor are controlled according to the required angle information to simultaneously drive the noise output unit to rotate and move along the extending length direction of the air outlet, and when the noise output unit reaches a target angle, the noise output unit is controlled according to the driving control signal to output the second noise signal so as to send the second noise signal to the position of the human body.
11. The method of claim 10, wherein the number of the noise detection units, the noise output units and the first driving motors is N, and the method further comprises:
and obtaining the required angle information of each noise output unit for outputting the second noise signal according to the human body position information, and controlling the corresponding first driving motor according to the required angle information so as to drive the rotation angle of the corresponding noise output unit.
12. The control method for active noise reduction of an air conditioner according to claim 9, further comprising:
and when the position of the human body changes, acquiring new required angle information according to the changed position information of the human body, and controlling the noise reduction device according to the new required angle information.
CN202210325168.4A 2022-03-30 2022-03-30 Air conditioner and control method for actively reducing noise of air conditioner Withdrawn CN114517954A (en)

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CN102354492A (en) * 2011-07-19 2012-02-15 南通立飞投资有限公司 Device and method for intelligently and softly reducing noises
CN105674534A (en) * 2016-03-25 2016-06-15 海信（山东）空调有限公司 Active noise reducing device and noise reducing method for air conditioner
CN106840374A (en) * 2017-01-06 2017-06-13 上海交通大学 Array scanning noise-measuring system
CN206724327U (en) * 2017-03-28 2017-12-08 北京质享科技有限公司 A kind of active noise reduction air purifier
CN108945150A (en) * 2018-07-26 2018-12-07 郑州轻工业学院 universal AGV
CN109990450A (en) * 2017-12-29 2019-07-09 青岛海尔智能技术研发有限公司 The noise-reduction method and denoising device of air-conditioning
CN112164385A (en) * 2020-09-21 2021-01-01 深圳市三德大康电子有限公司 Indoor adjustable equipment of making an uproar that disappears

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102354492A (en) * 2011-07-19 2012-02-15 南通立飞投资有限公司 Device and method for intelligently and softly reducing noises
CN105674534A (en) * 2016-03-25 2016-06-15 海信（山东）空调有限公司 Active noise reducing device and noise reducing method for air conditioner
CN106840374A (en) * 2017-01-06 2017-06-13 上海交通大学 Array scanning noise-measuring system
CN206724327U (en) * 2017-03-28 2017-12-08 北京质享科技有限公司 A kind of active noise reduction air purifier
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Application publication date: 20220520