CN110762728A - Indoor air conditioner simulation noise reduction control method and indoor air conditioner - Google Patents

Abstract

The invention relates to a simulated noise reduction control method for an indoor air conditioner and an indoor air conditioner. By pre-determining the corresponding relationship of "gear-speed" and/or "gear-noise", and cooperating with the determined speed corresponding to the preset noise upper limit, the Active noise reduction is achieved without adding a noise collection module, thereby reducing the manufacturing cost of the air conditioner and the complexity of the system. And the use of analog noise reduction can reduce costs, ensure low/no delay, and is suitable for mass production use.

Description

A kind of indoor air conditioner simulation noise reduction control method and indoor air conditioner

technical field

The invention relates to the technical field of air conditioners, and in particular, to a simulated noise reduction control method for an indoor air conditioner and an indoor air conditioner.

Background technique

The use of air conditioners has become more and more extensive. The normal comfort range of human hearing is between 15 decibels and 50 decibels, and the sound comfort range of human sleep is 30 decibels. Nowadays, air conditioner manufacturers mainly deal with the noise of outdoor compressors, but the noise generated by indoor fans cannot be ignored either. For indoor air conditioners, sometimes when the internal fan produces a certain amount of noise, it makes people feel uncomfortable and reduces the user's experience. Especially for some people with poor sleep quality, the slight sound will often cause great distress to the user.

The noise elimination methods in the prior art mainly include active noise reduction and passive noise reduction. Among them, passive noise reduction is used to reduce noise through propagation, while active noise reduction is achieved by generating sound waves with opposite phases and the same amplitude. Active noise reduction is further divided into analog noise reduction and digital noise reduction. The active noise reduction of indoor air conditioners in the prior art mainly uses digital noise reduction, but its cost is high, the penetration rate is low, and there are problems such as delay.

In addition, the existing active noise reduction is accompanied by real-time noise collection, so that the collected noise is offset by generating sound waves with opposite phases and a certain amplitude, so that the range of the sound is controlled within a certain decibel. Therefore, it is necessary to add a noise collection module to the indoor air conditioner and configure a corresponding control and power supply structure, which undoubtedly increases the manufacturing cost of the air conditioner and the complexity of the system.

SUMMARY OF THE INVENTION

In order to solve the above problems, according to the first aspect of the present invention, there is provided a simulated noise reduction control method for an indoor air conditioner, wherein the indoor air conditioner has a fan, and the fan operates in one of several predetermined wind gear positions during the air supply operation, The several predetermined wind gear positions correspond to different rotational speeds; it is characterized in that, the method includes:

(1) Measure the rotational speed of the fan in the predetermined wind gear positions in advance and establish a one-to-one correspondence between gears and rotational speeds; and/or,

Preliminarily measure the operating noise of the fan under the several predetermined wind gear positions and establish a one-to-one correspondence between gear positions and noise;

(2) Predetermining the corresponding critical rotational speed V _critical when the operating noise of the fan is equal to D _max , the D _max being the preset upper limit that the human body feels comfortable under the operating noise of the indoor air conditioner;

(3) When the fan is running, based on the one-to-one correspondence between the “gear position-speed” and/or the “gear position-noise” and the V _threshold , control whether to activate the simulated noise reduction and/or control Emits a noise-cancelling analog noise reduction signal.

The present invention can realize active noise reduction without adding a noise collection module by pre-determining the corresponding relationship between "gear position-speed" and/or "gear position-noise" and cooperating with the determined speed corresponding to the preset noise upper limit. Thereby, the manufacturing cost of the air conditioner and the complexity of the system are reduced. At the same time, the present invention adopts analog noise reduction, thereby realizing cost reduction, ensuring low/no delay, and being suitable for large-scale mass production use.

Further, the method includes:

(a1) respectively measuring the rotational speed of the fan in the predetermined wind gears in advance, and establishing a first mapping table including a one-to-one correspondence between “gears and rotational speeds”;

(a2) pre-determining the V _threshold ;

(a3) When the fan is running, obtain the wind gear position of the fan currently running and input it into the first mapping table to query its corresponding rotational speed V _current ;

(a4) Judging, if the V _{is currently} greater than or equal to the V _threshold , the control starts the simulated noise reduction; if the V _{is currently} less than the V _threshold , the control does not start the simulated noise reduction.

Further, the step (a1) further includes: further pre-determining the operating noise of the fan under the several predetermined wind gear positions, so that the first mapping table includes “gear position-noise”—one Correspondence;

In the step (a4), if the simulated noise reduction is activated, then the step (a5) is further included: acquiring the current wind gear position of the fan and inputting it into the first mapping table to query its corresponding The noise D _current ; and the corresponding noise cancellation analog noise reduction signal is issued for the D _current control.

Further, the method includes:

(b1) respectively measuring the rotational speed and the noise of the fan in the predetermined wind gear positions in advance, and establishing a second mapping table including a one-to-one correspondence between “gear-speed-noise”;

(b2) pre-determining the V _threshold ;

(b3) When the fan is running, a switch wind gear position instruction is received, and the switch wind gear gear position instruction includes the wind gear position to which the fan is to be switched;

(b4) Obtain the wind gear position to which the fan is to be switched and input it into the second mapping table to query its corresponding rotational speed V _{to be switched} and noise D _{to be switched} ;

(b5) Judging, if the V _{to be switched} is greater than or equal to the V _critical , before completing the wind gear switching, prepare the corresponding noise cancellation analog noise reduction signal required for the D _{to be switched} control setting parameters; And when the switch of the wind gear is completed, according to the set parameter, the corresponding noise cancellation analog noise reduction signal corresponding to the D _{to be switched} is controlled and issued;

If the V _{to be switched} is smaller than the V _threshold , the simulated noise reduction is controlled not to be activated when the wind gear switch is completed.

Further, the method includes:

(c1) respectively measuring the rotational speed of the fan in the predetermined wind gear positions in advance, and establishing a third mapping table including a one-to-one correspondence between “gear positions and rotational speeds”;

(c2) pre-determining the V _threshold ;

(c3) Comparing the rotational speed corresponding to each gear in the third mapping table with the V _threshold in advance, and assigning a low-noise label to the wind gear position less than the V _threshold , and setting the speed greater than or equal to the V _threshold The high-noise label is assigned to the windshield position of the

(c4) When the fan is running, it is judged that if the wind gear position of the fan currently running has the low noise label, the control does not start the simulated noise reduction; if it has the high noise label, the control starts the simulation Noise reduction.

Further, the step (c1) further includes: further pre-determining the noise of the fan under the predetermined wind gear positions, so that the third mapping table includes a one-to-one correspondence of “gear position-noise”. relation;

In the step (c4), if the simulated noise reduction is activated, then the step (c5) is further included: acquiring the current wind gear position of the fan and entering it into the third mapping table to query its corresponding The noise D _current ; and the corresponding noise cancellation analog noise reduction signal is issued for the D _current control.

Further, the method includes:

(d1) respectively measuring the noise of the fan in the predetermined wind gear positions in advance, and establishing a fourth mapping table including a one-to-one correspondence between gear positions and noise;

(d2) pre-determining the V _threshold ;

(d3) when the blower is running, obtain the rotational speed V _real-time of the blower operation in real time;

(d4) If the V _{real time} is greater than or equal to the V _critical , control to start the simulated noise reduction; if the V _{real time} is less than the V _critical , control not to start the simulated noise reduction;

(d5) In the step (d4), if the simulated noise reduction is activated, obtain the current wind gear position of the fan and input it into the fourth mapping table to query its corresponding noise D _current ; and for The D _current control sends out a corresponding noise cancelling analog noise reduction signal.

Further, the acquisition of the V _real-time is: obtaining the V _real-time through real-time measurement by a set wind speed sensor; or, inferring the V _real-time through an internal feedback signal of the fan.

Further, the noise canceling analog noise reduction signal is D _{noise reduction} , which satisfies: |D _{noise reduction} −D _max |<=D _max .

A second aspect of the present invention provides an indoor air conditioner, wherein the indoor air conditioner adopts the above-mentioned simulated noise reduction control method for the indoor air conditioner, and the indoor air conditioner includes: a storage module, a simulated noise reduction module, and a microprocessor module and said fan, wherein:

the storage module, configured to store the "gear-speed" and/or the "gear-noise" one-to-one correspondence;

The microprocessor module sends a control electrical signal to the analog noise reduction module to control the analog noise reduction module to start/disable the analog noise reduction and/or to send the noise cancellation analog noise reduction signal;

The analog noise reduction module receives the control electrical signal and under its control enables/disables the analog noise reduction and/or emits the noise cancellation analog noise reduction signal.

The benefits of the present invention include at least:

(1) In the present invention, by pre-determining the corresponding relationship between "gear position-speed" and/or "gear position-noise", and cooperating with the determined speed corresponding to the preset noise upper limit, the present invention can realize the initiative without adding a noise collection module. Noise reduction, thereby reducing the air conditioning manufacturing cost and system complexity.

(2) The present invention adopts analog noise reduction, thereby realizing cost reduction, ensuring low/no delay, and being suitable for mass production use in a large range.

(3) The present invention can achieve active noise reduction without adding a noise collection module and a wind speed sensor by using the pre-determined "gear-speed-noise" correspondence and in conjunction with the determined rotation speed corresponding to the preset noise upper limit. The air conditioner manufacturing cost and system complexity are reduced.

(4) The present invention can prepare the corresponding noise offset analog noise reduction signal in advance before completing the wind gear switching by using the pre-determined "gear-speed-noise" correspondence and cooperating with the determined rotation speed corresponding to the preset noise upper limit. The required setting parameters are used to control and send out the noise offset analog noise reduction signal at the first time when the wind gear switch is completed, so as to avoid the problem of large short-term noise caused by the response delay after shifting.

(5) The present invention pre-marks each gear as a low or high noise label according to the pre-determined "gear-speed-noise" correspondence, and in conjunction with the determined rotational speed corresponding to the preset noise upper limit, so that during operation only According to the gear information, it is possible to control whether to activate the analog noise reduction and/or control to send out a noise cancelling analog noise reduction signal without further query.

(6) The present invention can effectively control whether to activate the analog noise reduction and/or control the issue of noise offset analog noise reduction signals through the pre-determined simple two-dimensional correspondence relationship of "gear-noise" and the fan speed obtained in real time. .

(7) The value range of the noise cancellation analog noise reduction signal set by the present invention can improve the pertinence and response speed of sound wave cancellation, so that the range of faster and more effective sound can be controlled within a certain decibel, and the user experience can be improved. with comfort.

Description of drawings

FIG. 1 is a schematic flowchart of a simulation noise reduction control method corresponding to an indoor air conditioner according to Embodiment 1 of the present invention;

FIG. 2 is a schematic flowchart of a simulated noise reduction control method for an indoor air conditioner corresponding to Embodiment 2 of the present invention;

3 is a schematic flowchart of a method for controlling simulated noise reduction of an indoor air conditioner corresponding to Embodiment 3 of the present invention;

FIG. 4 is a schematic flowchart of a simulated noise reduction control method for an indoor air conditioner corresponding to Embodiment 4 of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The invention relates to a simulated noise reduction control method for an indoor air conditioner. The indoor air conditioner has a fan, and the fan operates in one of several predetermined wind gear positions during air supply operation, and the several predetermined wind gear positions correspond to different rotational speeds .

The indoor air conditioner simulated noise reduction control method of the present invention is mainly based on:

On the one hand, the rotational speed of the fan at the several predetermined wind gears is respectively measured in advance, and a one-to-one correspondence between gears and rotational speed is established; The operating noise under the gear position and establish a one-to-one correspondence between "gear-noise".

It should be noted that the "preliminary" in the present invention refers to the test stage before the fan runs, and may preferably be the test stage after the air conditioner is assembled. In the "pre" stage, the rotational speed and noise can be measured by an additional wind speed sensor or a noise collection module. However, the wind speed sensor and the noise collection module are used as test equipment to measure various parameters of the air conditioner rather than the accessories of the air conditioner itself.

In the second aspect, pre-determining the corresponding critical rotation speed V _critical when the operating noise of the fan is equal to D _max , where D _max is a preset upper limit for the comfort of the human body under the operating noise of the indoor air conditioner;

The D _max is a preset and adjustable reference value rather than an actual value. For example, the normal comfort range of human hearing is between 15 decibels and 50 decibels, and the sound comfort range of human sleep is 30 decibels, so D _max can preferably be taken from a value between 30 and 50 decibels.

It should be noted that the present invention itself does not seek to offset the operating noise of the air-conditioning fan to within the upper limit that various types of human beings feel comfortable. Offset to meet the comfort needs of various human bodies. Therefore, the D _max of the present invention is a preset upper limit reference value rather than the actual upper limit experience value of a certain human body or certain types of human bodies. However, in the present invention, the _Dmax value can be selected from the noise comfort zone of normal human activities (such as the decibels for the reference human hearing comfort and sleep comfort decibels), and the _Dmax value can be used as a reference, so that the control is to a certain extent. Targeted and timely start of noise reduction (avoiding or reducing the occurrence of noise reduction caused by the noise reduction process itself introduced when noise reduction is not required, or not starting noise reduction in time when the noise is large), and the targeted generation of opposite phases The sound waves with a certain amplitude can cancel the noise, so as to control the sound range within a certain decibel to a certain extent, avoid the problem of excessive noise generated by the fan in the air conditioner, and then improve the user experience and comfort. For the adjustment of D _max and the corresponding adjustment conditions, please refer to the content in Embodiment 1 below.

In the third aspect, when the fan is running, it may be controlled whether to activate the simulated noise reduction and/or based on the one-to-one correspondence between the “gear-speed” and/or the “gear-noise” and the V _threshold . Controls the emission of a noise cancelling analog noise reduction signal.

It should be noted that the “starting of simulated noise reduction” in the present invention includes both the situation from not simulated noise reduction to the start of simulated noise reduction, and the process from performing simulated noise reduction to continuing simulated noise reduction (usually the noise reduction setting is parameters will change). Similarly, "do not start the simulated noise reduction" of the present invention includes the situation from not simulating noise reduction to keeping the unsimulated noise reduction, and also includes the situation from performing simulated noise reduction to turning off simulated noise reduction.

Therefore, the present invention can achieve active reduction without adding a noise collection module by pre-determining the corresponding relationship between "gear position-speed" and/or "gear position-noise", and in conjunction with the determined speed corresponding to the preset noise upper limit. noise, thereby reducing the manufacturing cost and system complexity of the air conditioner.

At the same time, the present invention adopts analog noise reduction, thereby realizing cost reduction, ensuring low/no delay, and being suitable for large-scale mass production use.

For more fully and comprehensively set forth the innovation of the present invention, below in conjunction with specific embodiment, describe in detail:

Example 1:

Referring to FIG. 1, it is a schematic flowchart of a simulated noise reduction control method for an indoor air conditioner corresponding to Embodiment 1 of the present invention, which mainly includes the following steps:

(a1) Measure the rotational speed of the fan in a number of predetermined wind gears in advance, and establish a first mapping table including a one-to-one correspondence between “gears and rotational speeds”.

As shown in Table 1 below, gears ₁ , ₂ ...5 correspond to rotational speeds V1, V2... _V5 respectively.

(a2) Predetermine the corresponding critical speed V _critical when the operating noise of the fan is equal to D _max ;

(a3) When the fan is running, obtain the current wind gear position of the fan and input it into the first mapping table to query its corresponding rotational speed V _current .

For example, if the current wind gear is 1, enter it into the mapping table and query to obtain its corresponding rotational speed as V ₁ , at this time, the V ₁ is V _current .

(a4) Judging, if V _{is currently} greater than or equal to V _critical , the control starts the simulated noise reduction; if V _{is currently} less than V _critical , the control does not start the simulated noise reduction.

Preferably, in the step (a1), the operating noise of the fan under the several predetermined wind gear positions may be further measured in advance, so that the first mapping table includes a one-to-one correspondence of “gear position-noise” relation. See Table 1 below, gears ₁ , ₂ ... ₅ correspond to noises D1, D2...D5 respectively.

Therefore, if the simulated noise reduction is activated in the step (a4), then the step (a5) is further included: acquiring the current wind gear position of the fan and inputting it into the first mapping table Query its corresponding noise D _current ; and send out a corresponding noise cancellation analog noise reduction signal for the D _current control.

For example, if the current wind gear is 1, then input it into the mapping table to query to obtain its corresponding noise as D ₁ , and at this time, the D ₁ is D _current . Then _a corresponding noise cancellation analog noise reduction signal is sent out for the D1 control.

Therefore, the present invention can achieve active noise reduction without adding a noise collection module and a wind speed sensor, and reduce the It reduces the manufacturing cost and system complexity of the air conditioner.

Preferably, the noise cancellation analog noise reduction signal is D _{noise reduction} , which satisfies: |D _{noise reduction} −D _max |<=D _max . After research, when D _{noise reduction} meets the above formula, it can improve the pertinence and response speed of sound wave cancellation, so that the range of faster and more effective sound can be controlled within a certain decibel, and the user experience and comfort can be improved.

It should be noted that for an indoor air conditioner that has been designed and prepared, the analog noise reduction module configured is often a given (unless the module is replaced), so the maximum D _{noise reduction} (absolute value) that the indoor air conditioner can provide is given. When a preset D _max value is determined, the D _{noise reduction} is adjusted according to the noise situation to offset the noise reduction under the condition that the above formula is satisfied and the D _{noise reduction} maximum value is not exceeded. Effect.

However, there is a situation, if the preset D _max value is such that: even if D _{noise reduction} takes its maximum value, it still cannot satisfy |D _{noise reduction} – D _max |<= D _max , then the preset D _max value needs to be adjusted Adjust until D _{noise reduction} can satisfy |D _{noise reduction} – D _max |<= D _max .

Table 1 Example of the first mapping table

gear 1 2 3 4 5 Rotating speed V₁ V₂ V₃ V₄ V₅ noise D₁ D₂ D₃ D₄ D₅

Example 2:

Referring to FIG. 2, it is a schematic flowchart of a simulated noise reduction control method for an indoor air conditioner corresponding to Embodiment 2 of the present invention, which mainly includes the following steps:

(b1) Measure the rotational speed and noise of the fan in a number of predetermined wind gears in advance, and establish a second mapping table that includes a one-to-one correspondence between “gear-speed-noise”, as shown in Table 2 below.

(b2) Predetermining the corresponding critical speed V _critical when the operating noise of the fan is equal to D _max ;

(b3) When the fan is running, a switch wind gear position instruction is received, and the switch wind gear gear position instruction includes the wind gear position to which the fan is to be switched;

For example, the switch wind gear position command instructs the fan to switch from the current gear position (assuming the current gear position is 1) to the gear position 2.

(b4) Obtain the wind gear position to which the fan is to be switched and input it into the second mapping table to query its corresponding rotational speed V _{to be switched} and noise D _{to be switched} ;

For example, input the gear 2 to be switched to into the second mapping table to query its corresponding rotational speed V ₂ and noise D ₂ , that is, the rotational speed V _{to be switched} and the noise D _{to be switched} , respectively.

(b5) Judging, if V _{to be switched} is greater than or equal to V _critical , before completing the wind gear switching, prepare the corresponding setting parameters (such as setting voltage) required for the D _to-switch control to cancel the analog noise reduction signal. , setting current, whether a certain amplifier is turned on, etc.); and when the switch of the wind gear is completed, the corresponding noise cancellation analog noise reduction signal corresponding to the D _{to be switched} is sent out according to the set parameter control; preferably, the The noise cancellation analog noise reduction signal is D _{noise reduction} , which satisfies: |D _{noise reduction} −D _max |<=D _max .

If V _{to be switched} is less than V _critical , the simulated noise reduction is controlled not to be activated when the wind gear switch is completed.

Therefore, the present invention can prepare the corresponding noise in advance to cancel the noise caused by the analog noise reduction signal before completing the switch of the wind gear by using the pre-determined "gear-speed-noise" corresponding relationship and cooperating with the determined rotation speed corresponding to the preset noise upper limit. The required setting parameters can be controlled to cancel the analog noise reduction signal at the first time when the wind gear switch is completed, so as to avoid the problem of large short-term noise caused by the response delay after shifting.

Table 2 Example of the second mapping table

gear 1 2 3 4 5 Rotating speed V₁ V₂ V₃ V₄ V₅ noise D₁ D₂ D₃ D₄ D₅

Example 3:

Referring to FIG. 3, it is a schematic flowchart of a simulated noise reduction control method for an indoor air conditioner corresponding to Embodiment 3 of the present invention, which mainly includes the following steps:

(c1) Measure the rotational speed of the fan in a number of predetermined wind gears in advance, and establish a third mapping table that includes a one-to-one correspondence between gears and rotational speeds, see Table 3 below;

(c2) Predetermining the corresponding critical speed V _critical when the operating noise of the fan is equal to D _max ;

(c3) Compare the rotational speed corresponding to each gear in the third mapping table with the V _threshold in advance, and assign the low-noise label to the wind gear gears less than the V _threshold , and assign the wind gear gears greater than or equal to the V _threshold to the high noise Label;

For example, after comparison, the rotational speeds V ₁ , V ₂ , and V _{3 corresponding to gears 1, 2, and 3} are all less than V _critical , and the rotational speeds V ₄ and V ₅ corresponding to gears 4 and 5 are both greater than V _critical , so the gears 1, 2, and 3 are assigned low-noise labels, and gears 4 and 5 are assigned high-noise labels.

(c4) When the fan is running, it is judged that if the wind gear position of the fan currently running has the low noise label, the control does not start the simulated noise reduction; if it has the high noise label, the control starts the simulation Noise reduction.

For example, judging that the current gear is 1, and gear 1 has a low noise label, the control does not start the simulated noise reduction. For another example, if it is determined that the current gear is 5, and the gear 5 has a high noise label, the simulated noise reduction is controlled to be activated.

Preferably, in the step (c1), the noise of the fan in the predetermined wind gear positions may be further measured in advance, so that the third mapping table includes a one-to-one correspondence between gear positions and noise. , see Table 3 below.

Therefore, if the simulated noise reduction is activated in the step (c4), then the step (c5) is further included: acquiring the current wind gear position of the fan and entering it into the third mapping table for query its corresponding noise D _current ; and sending out a corresponding noise canceling analog noise reduction signal for the D _current control.

Preferably, the noise cancellation analog noise reduction signal is D _{noise reduction} , which satisfies: |D _{noise reduction} −D _max |<=D _max .

Therefore, the present invention pre-marks each gear as a low or high noise label based on the pre-determined "gear-speed-noise" correspondence, and in conjunction with the determined rotational speed corresponding to the preset noise upper limit, so that only according to the The gear information can control whether to activate the analog noise reduction and/or control the emission of a noise cancelling analog noise reduction signal without further query.

Table 3 Example of the third mapping table

gear 1 2 3 4 5 Rotating speed V₁ V₂ V₃ V₄ V₅ noise D₁ D₂ D₃ D₄ D₅

Example 4:

Referring to FIG. 4, it is a schematic flowchart of a simulated noise reduction control method for an indoor air conditioner corresponding to Embodiment 4 of the present invention, which mainly includes the following steps:

(d1) respectively measuring the noise of the fan in the predetermined wind gear positions in advance, and establishing a fourth mapping table including a one-to-one correspondence between “gear positions and noise”, see Table 4 below;

(d2) Predetermining the corresponding critical speed V _critical when the operating noise of the fan is equal to D _max ;

(d3) when the blower is running, obtain the rotational speed V _real-time of the blower operation in real time;

The acquisition of V _real-time may be to obtain V _real-time through the real-time measurement of a set wind speed sensor; or, V _real -time may be inferred from the internal feedback signal (eg, current, voltage, power) of the fan. Among them, it is more preferable to infer the V _real-time method through the internal feedback signals (such as current, voltage, power) of the fan, so as to effectively reduce the cost and system complexity without adding a wind speed sensor.

(d4) if V _{real time} is greater than or equal to V _critical , control to start the simulated noise reduction; if V _{real time} is less than V _critical , then control does not start the simulated noise reduction;

(d5) In the step (d4), if the simulated noise reduction is activated, obtain the current wind gear position of the fan and input it into the fourth mapping table to query its corresponding noise D _current ; and for The D _current control sends out a corresponding noise cancelling analog noise reduction signal.

Preferably, the noise cancellation analog noise reduction signal is D _{noise reduction} , which satisfies: |D _{noise reduction} −D _max |<=D _max .

Therefore, the present invention can effectively control whether to activate the analog noise reduction and/or control the emission of noise canceling the analog noise reduction signal through the pre-determined simple two-dimensional correspondence of "gear-noise" and the fan speed obtained in real time.

Table 4 Example of the fourth mapping table

gear 1 2 3 4 5 noise D₁ D₂ D₃ D₄ D₅

The second aspect of the present invention further provides an indoor air conditioner adopting the simulated noise reduction control method of the indoor air conditioner of the present invention, the indoor air conditioner comprising: a storage module, a simulated noise reduction module, a microprocessor module and a fan, wherein:

the storage module, configured to store the "gear-speed" and/or the "gear-noise" one-to-one correspondence;

The microprocessor module sends a control electrical signal to the analog noise reduction module to control the analog noise reduction module to start/disable the analog noise reduction and/or to send the noise cancellation analog noise reduction signal;

The analog noise reduction module receives the control electrical signal and under its control enables/disables the analog noise reduction and/or emits the noise cancellation analog noise reduction signal.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Claims (10)

1. A simulated noise reduction control method for an indoor air conditioner, wherein the indoor air conditioner has a fan, and the fan operates in one of several predetermined wind gear positions during air supply operation, and the several predetermined wind gear positions correspond to different rotational speeds; It is characterised in that the method includes: (1) Measure the rotational speed of the fan in the predetermined wind gear positions in advance and establish a one-to-one correspondence between gears and rotational speeds; and/or, Preliminarily measure the operating noise of the fan under the several predetermined wind gear positions and establish a one-to-one correspondence between gear positions and noise; (2) Predetermining the corresponding critical rotational speed V _critical when the operating noise of the fan is equal to D _max , the D _max being the preset upper limit that the human body feels comfortable under the operating noise of the indoor air conditioner; (3) When the fan is running, based on the one-to-one correspondence between the “gear position-speed” and/or the “gear position-noise” and the V _threshold , control whether to activate the simulated noise reduction and/or control Emits a noise-cancelling analog noise reduction signal. 2. The indoor air conditioner simulated noise reduction control method according to claim 1, wherein the method comprises: (a1) respectively measuring the rotational speed of the fan in the predetermined wind gears in advance, and establishing a first mapping table including a one-to-one correspondence between “gears and rotational speeds”; (a2) pre-determining the V _threshold ; (a3) When the fan is running, obtain the wind gear position of the fan currently running and input it into the first mapping table to query its corresponding rotational speed V _current ; (a4) Judging, if the V _{is currently} greater than or equal to the V _threshold , the control starts the simulated noise reduction; if the V _{is currently} less than the V _threshold , the control does not start the simulated noise reduction. 3 . The simulated noise reduction control method for an indoor air conditioner according to claim 2 , wherein the step (a1) further comprises: further pre-determining the operating noise of the fan under the several predetermined wind gear positions. 4 . , so that the first mapping table contains a one-to-one correspondence of "gear-noise"; In the step (a4), if the simulated noise reduction is activated, then the step (a5) is further included: acquiring the current wind gear position of the fan and inputting it into the first mapping table to query its corresponding The noise D _current ; and the corresponding noise cancellation analog noise reduction signal is issued for the D _current control. 4. The indoor air conditioner simulated noise reduction control method according to claim 1, wherein the method comprises: (b1) respectively measuring the rotational speed and the noise of the fan in the predetermined wind gear positions in advance, and establishing a second mapping table including a one-to-one correspondence between “gear-speed-noise”; (b2) pre-determining the V _threshold ; (b3) When the fan is running, a switch wind gear position instruction is received, and the switch wind gear gear position instruction includes the wind gear position to which the fan is to be switched; (b4) Obtain the wind gear position to which the fan is to be switched and input it into the second mapping table to query its corresponding rotational speed V _{to be switched} and noise D _{to be switched} ; (b5) Judging, if the V _{to be switched} is greater than or equal to the V _critical , before completing the wind gear switching, prepare the corresponding noise cancellation analog noise reduction signal required for the D _{to be switched} control setting parameters; And when the switch of the wind gear is completed, according to the set parameter, the corresponding noise cancellation analog noise reduction signal corresponding to the D _{to be switched} is controlled and issued; If the V _{to be switched} is smaller than the V _threshold , the simulated noise reduction is controlled not to be activated when the wind gear switch is completed. 5. The indoor air conditioner simulated noise reduction control method according to claim 1, wherein the method comprises: (c1) respectively measuring the rotational speed of the fan in the predetermined wind gear positions in advance, and establishing a third mapping table including a one-to-one correspondence between “gear positions and rotational speeds”; (c2) pre-determining the V _threshold ; (c3) Comparing the rotational speed corresponding to each gear in the third mapping table with the V _threshold in advance, and assigning a low-noise label to the wind gear position less than the V _threshold , and setting the speed greater than or equal to the V _threshold The high-noise label is assigned to the windshield position of the (c4) When the fan is running, it is judged that if the wind gear position of the fan currently running has the low noise label, the control does not start the simulated noise reduction; if it has the high noise label, the control starts the simulation Noise reduction. 6. The indoor air conditioner simulated noise reduction control method according to claim 5, wherein, The step (c1) further includes: further pre-determining the noise of the fan in the predetermined wind gear positions, so that the third mapping table includes a one-to-one correspondence between gear positions and noise; In the step (c4), if the simulated noise reduction is activated, then the step (c5) is further included: acquiring the current wind gear position of the fan and entering it into the third mapping table to query its corresponding The noise D _current ; and the corresponding noise cancellation analog noise reduction signal is issued for the D _current control. 7. The indoor air conditioner simulated noise reduction control method according to claim 1, wherein the method comprises: (d1) respectively measuring the noise of the fan in the predetermined wind gear positions in advance, and establishing a fourth mapping table including a one-to-one correspondence between “gear positions and noise”; (d2) pre-determining the V _threshold ; (d3) when the blower is running, obtain the rotational speed V _real-time of the blower operation in real time; (d4) If the V _{real time} is greater than or equal to the V _critical , control to start the simulated noise reduction; if the V _{real time} is less than the V _critical , control not to start the simulated noise reduction; (d5) In the step (d4), if the simulated noise reduction is activated, obtain the current wind gear position of the fan and input it into the fourth mapping table to query its corresponding noise D _current ; and for The D _current control sends out a corresponding noise cancelling analog noise reduction signal. 8. The indoor air-conditioning simulated noise reduction control method according to claim 7, wherein the acquisition of the V _real-time is: obtaining the V _real-time through the real-time measurement of a set wind speed sensor; The feedback signal deduces the V _{real time} . 9. The indoor air-conditioning analog noise reduction control method according to any one of claims 1-8, wherein the noise cancellation analog noise reduction signal is D _{noise reduction} , which satisfies: |D _{Noise Reduction} - D _max |<= D _max . 10. An indoor air conditioner, characterized in that the indoor air conditioner adopts the indoor air conditioner analog noise reduction control method according to any one of claims 1-9, and the indoor air conditioner comprises: a storage module, an analog noise reduction module, a micro a processor module and the fan, wherein: the storage module, configured to store the "gear-speed" and/or the "gear-noise" one-to-one correspondence; The microprocessor module sends a control electrical signal to the analog noise reduction module to control the analog noise reduction module to start/disable the analog noise reduction and/or to send the noise cancellation analog noise reduction signal; The analog noise reduction module receives the control electrical signal and under its control enables/disables the analog noise reduction and/or emits the noise cancellation analog noise reduction signal.

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