Air conditioner control method based on sound reverberation and air conditioner

Abstract

The invention provides an air conditioner control method based on sound reverberation and an air conditioner, and belongs to the technical field of air conditioner control. The air conditioner control method based on sound reverberation comprises the steps that a reverberation test is conducted in an installation room of an air conditioner, and an audio signal of the reverberation test is obtained; calculating reverberation time according to the acquired audio signal; according to the reverberation time, the heat preservation performance of the air conditioner installation room is evaluated; and adjusting operation parameters of the air conditioner according to the thermal insulation performance of the installation room. According to the control method, the heat preservation performance of the installation room can be evaluated according to the reverberation time, then the operation parameters of the air conditioner are adjusted in a targeted mode, more accurate air conditioner energy-saving control can be achieved, and the energy utilization efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner control, and in particular to an air conditioner control method based on sound reverberation and an air conditioner. Background Art

[0002] In the field of architectural acoustics, reverberation time is a crucial parameter that describes the time required for sound to gradually decay and disappear in a closed space. The length of reverberation time has a direct impact on the indoor sound quality and the comfort of the acoustic environment. Specifically, a reverberation time that is too short may cause the sound to appear dry and lack a sense of naturalness; while a reverberation time that is too long may make the sound blurred, affecting the clarity of speech and the sense of hierarchy of music listening. In addition, the reverberation time is also closely related to the sound absorption and reflection properties of building materials and the thermal insulation properties of the environment. At present, there are technical solutions related to reverberation testing on the market, but the existing technical solutions related to reverberation testing are mainly in the field of sound source localization technology, specifically by obtaining sound information of a specific place, achieving accurate sound source localization, and providing data support for the operation of other equipment. However, there is a lack of research in the prior art on combining reverberation time with the operation control of air-conditioning equipment. Summary of the invention

[0003] In order to overcome the problems existing in the related art, one of the objects of the present invention is to provide an air conditioning control method based on sound reverberation, which can evaluate the thermal insulation performance of the installation room according to the reverberation time, and then adjust the operating parameters of the air conditioner in a targeted manner, thereby achieving more accurate air conditioning energy-saving control and helping to improve energy utilization efficiency.

[0004] An air conditioning control method based on sound reverberation, comprising:

[0005] Conduct a reverberation test in the room where the air conditioner is installed and obtain the audio signal of the reverberation test;

[0006] Calculate the reverberation time according to the acquired audio signal;

[0007] Evaluate the thermal insulation performance of the room where the air conditioner is installed based on the reverberation time;

[0008] Adjust the operating parameters of the air conditioner according to the thermal insulation performance of the room where it is installed.

[0009] The specific implementation process of this method is as follows:

[0010] When the air conditioner is in operation, the control system of the air conditioner first starts the environmental information acquisition and reverberation test. The temperature sensor monitors and analyzes the indoor ambient temperature in real time, and feeds back the monitoring data to the air conditioner control module. The air conditioner control module transmits these temperature data back to the background server through the wireless communication module. The background server evaluates whether the current environment is suitable for reverberation testing based on the received indoor ambient temperature value. For example, when the indoor ambient temperature is stable in a certain range (such as 20-25 degrees Celsius), the background server will determine that the environment is suitable and calculate the sound speed in the current environment. Subsequently, the background server sends an instruction to start the reverberation test to the air conditioner voice module through the wireless communication module. After receiving the instruction, the air conditioner voice module plays a specific test signal, such as white noise or pulse sound, through its built-in speaker. The selection and playback parameters of the test signal are adjusted by the background server according to the ambient temperature and the calculated sound speed to ensure the accuracy of the test.

[0011] At the same time, the microphone array in the air conditioner voice module synchronously picks up the sound signal in the room. The picked-up audio signal is processed by the voice recognition algorithm module to remove noise and other interference, and then transmitted to the backend server through the wireless communication module. The backend server uses acoustic analysis software or algorithms to process the received audio signal and calculate the reverberation time.

[0012] After obtaining the reverberation time, the backend server will further conduct comparative evaluation based on the reverberation time and the room insulation performance experimental data corresponding to the reverberation time, analyze and obtain the insulation performance of the current room. The evaluation method includes comparing the difference between the reverberation time and the standard value, analyzing the change trend of the reverberation time over time, and making a comprehensive judgment based on the insulation performance of the corresponding reverberation value or approximate value in the experimental data.

[0013] Based on the evaluation results of the thermal insulation performance, the background server sends corresponding control instructions to the air conditioning control module. The air conditioning control module adjusts the operating parameters of the air conditioner according to these instructions, such as temperature setting, wind speed and running time, to achieve energy-saving control. In addition, the system also uses a formula to calculate the speed of sound in the current environment based on the ambient temperature collected by the temperature sensor, and optimizes the sound source localization algorithm accordingly. The optimized sound source localization algorithm can measure the target location information more accurately, allowing the air conditioning equipment to intelligently adjust the air supply direction and wind speed according to the accurately measured angle and distance values.

[0014] In a preferred technical solution of the present invention, calculating the reverberation time according to the acquired audio signal includes:

[0015] Preprocess the audio signal to remove noise from the audio signal;

[0016] Acquire characteristic information of the processed audio signal;

[0017] The reverberation time is calculated by using the characteristic information of the acquired audio signal in combination with a preset algorithm.

[0018] In actual applications, audio noise may come from environmental background noise, electronic noise inside the device, etc. To effectively remove these noises, filtering techniques such as bandpass filtering, notch filtering, etc., as well as noise estimation and suppression algorithms such as spectral subtraction and Wiener filtering can be used. Preprocessing can also include signal enhancement, which is to enhance the audio signal on the basis of noise removal to improve the quality and recognizability of the signal. This includes but is not limited to dynamic range compression, gain control, etc.

[0019] In a preferred technical solution of the present invention, the calculation formula of the reverberation time includes:

[0020] T60 = KV / A;

[0021] Where: T60 is the reverberation time; K is a constant related to the humidity of the space, generally K = 0.161s / m; V is the volume of the closed room; A is the total sound absorption, which is the product of the total surface area of ​​the room and its average sound absorption coefficient;

[0022] In practical applications, if the indoor surface is made of a variety of different materials, the total sound absorption A is the sum of the sound absorption of various materials, that is, A = Σsiai (ai is the sound absorption coefficient of each material, si is the corresponding surface area). If there are objects such as furniture or people in the room whose surface area is difficult to determine, their sound absorption also needs to be considered.

[0023] Or, the calculation formula of the reverberation time includes:

[0024] T60=-Sln(1-ā) / KV

[0025] Where: T is the reverberation time; S is the total surface area of ​​the room; ā is the average sound absorption coefficient of the indoor surface; K is a constant related to the speed of sound, K = 0.160-0.162, generally taken as 0.161; V is the volume of the room.

[0026] In a preferred technical solution of the present invention, the step of evaluating the thermal insulation performance of the room where the air conditioner is installed based on the reverberation time includes:

[0027] Preset reverberation time and thermal insulation performance comparison table;

[0028] Get the real-time reverberation time, compare the real-time reverberation time with the reference relationship table, and get the thermal insulation performance of the current space.

[0029] In order to correlate and evaluate the reverberation time and thermal insulation performance, this application first presets a reverberation time and thermal insulation performance comparison table. This table establishes the corresponding relationship between the reverberation time and the thermal insulation performance of the room based on a large amount of experimental data. The comparison table can be customized according to different building materials, room structures and other factors to ensure the accuracy of the evaluation.

[0030] During the operation of the air conditioner, the present invention uses the speaker and microphone of the voice air conditioner as the sound source and audio pickup device. Through the wireless communication link of the voice air conditioner, the picked up audio is transmitted to the background server for analysis and processing, so as to obtain the real-time reverberation time. This step does not require the purchase of additional professional acoustic equipment, which reduces costs and simplifies the operation process.

[0031] After the backend server obtains the real-time reverberation time, it compares it with the preset reverberation time and thermal insulation performance comparison table. Through the comparison, the thermal insulation performance evaluation result of the current space can be obtained. The evaluation result serves as an important basis for air conditioning energy-saving control.

[0032] In a preferred technical solution of the present invention, the step of obtaining the real-time reverberation time further includes:

[0033] Obtain the relationship between the real-time reverberation time and time, and evaluate the thermal insulation performance of the current space based on the obtained relationship.

[0034] Based on the real-time reverberation time and its changing relationship, the backend server evaluates the thermal insulation performance of the current space. The evaluation method includes comparing the difference between the reverberation time and the standard value, analyzing the change trend of the reverberation time over time, and making a comparative evaluation with reference to the experimental data of the room thermal insulation performance corresponding to the reverberation time, so as to obtain the thermal insulation performance of the current room more accurately.

[0035] In a preferred technical solution of the present invention, adjusting the operating parameters of the air conditioner according to the thermal insulation performance of the installation room includes:

[0036] Adjust the temperature setting and wind speed of the air conditioner according to the thermal insulation performance of the room where it is installed;

[0037] Get the real-time temperature of the installation room and determine the time T required for the real-time temperature to reach the preset temperature;

[0038] According to the required time T, the operating parameters of the air conditioner are adjusted. In this embodiment, during the thermal insulation performance evaluation process, the server comprehensively considers multiple factors such as the room wall material, window type, door gap size, etc., and calculates the thermal insulation performance evaluation value. According to this evaluation value, the server intelligently adjusts the operating parameters of the air conditioner: if the thermal insulation performance is good, the temperature setting is appropriately lowered and the wind speed is reduced; otherwise, the temperature setting is correspondingly increased and the wind speed is increased. At the same time, the server also calculates the time T required to reach the preset temperature based on the difference between the real-time temperature and the preset temperature. Based on the T value, the server further optimizes the operation of the air conditioner: when T is longer, the air conditioner is started in advance; when T is shorter, the power is reduced when approaching the preset temperature to avoid excessive cooling or heating.

[0039] In a preferred technical solution of the present invention, after adjusting the operating parameters of the air conditioner according to the thermal insulation performance of the installation room, the method further includes:

[0040] Get the real-time temperature of the room where the air conditioner is installed, and determine the real-time sound speed based on the real-time temperature obtained:

[0041] Using the determined real-time sound speed, the sound source of the target position is located;

[0042] Adjust the air supply mode of the air conditioner according to the target location.

[0043] In a preferred technical solution of the present invention, the method of locating the sound source of the target position by using the determined real-time sound speed includes:

[0044] The real-time sound velocity V is calculated using the formula (V=V0+0.6T).

[0045] Where V0 is the speed of sound waves at zero degrees, 332 m / s, and T is the ambient temperature;

[0046] Use the optimized formulas (t1 = d1 / V) and (t2 = d2 / V) to calculate the delay time t1 and t2 from the sound source to different microphones, where d1 and d2 are the distances from the sound source to different microphones, and V is the speed of sound in the current environment;

[0047] According to the calculated delay time, the sound source of the target position is located.

[0048] The specific implementation process of this implementation is as follows: The air-conditioning system is embedded with a high-precision temperature sensor to monitor the temperature changes of the installation room in real time. The real-time sound speed V in the current environment is calculated using the formula (V=V0+0.6T). Among them, V0 is the sound wave speed of 332m / s at zero degrees, and T is the ambient temperature measured in real time. The air-conditioning system is equipped with a microphone array to capture the sound signal in the room. The microphone array includes at least two microphones. The delay time t1 and t2 of the sound source signal reaching different microphones are calculated by the optimized formulas (t1=d1 / V) and (t2=d2 / V). Among them, d1 and d2 represent the distance between the sound source and the microphone, respectively, and V is the real-time sound speed. Combined with the sound source localization algorithm, the calculated delay time is used to accurately determine the sound source position. Then, based on the sound source localization results, the air-conditioning system intelligently adjusts the air supply direction and wind speed to ensure that the cold air or hot air is accurately delivered to the target location. This intelligent adjustment not only improves user comfort, but also achieves more efficient energy utilization.

[0049] Moreover, the existing hardware resources of the air-conditioning system (such as temperature sensors, microphone arrays, etc.) can be utilized, without the need to purchase additional professional acoustic equipment, thereby simplifying the operation process and reducing costs.

[0050] In a preferred technical solution of the present invention, before performing the reverberation test in the room where the air conditioner is installed, the method further includes:

[0051] Obtain the real-time environmental conditions of the room where the air conditioner is installed, and determine whether the real-time environmental conditions are suitable for reverberation testing;

[0052] When the real-time environment conditions are suitable for reverberation testing, start the reverberation test.

[0053] In actual applications, the temperature sensor, humidity sensor and other environmental monitoring devices built into the air conditioning system can be used to capture and record key environmental parameters such as temperature and humidity in the room where the air conditioner is installed in real time. The monitored environmental data will be quickly transmitted to the background server through the wireless communication module for subsequent analysis and processing. The background server will carefully analyze the received environmental data to determine whether the current environment is stable. For example, when the indoor ambient temperature is stable in a suitable range (such as 20-25 degrees Celsius) and the humidity is also at an ideal level, the environment can be considered stable and suitable for reverberation testing. In addition, the background server will also evaluate the environmental noise conditions. If the current environmental noise is too high, it may seriously interfere with the accuracy of the reverberation test. Therefore, only when the environmental noise is below a certain threshold will it be considered suitable for reverberation testing.

[0054] When it is confirmed that the real-time environmental conditions are suitable for reverberation testing, the backend server will immediately send instructions to the air conditioner voice module through the wireless communication module to control the speaker in the air conditioner to play a specific test signal (such as white noise or pulse sound)

[0055] The microphone array in the air conditioner voice module will synchronously pick up the sound signals in the room and transmit these precious audio signals to the backend server through the wireless communication module. The backend server will use professional acoustic analysis software or algorithms to carefully process the audio signals and finally calculate the reverberation time.

[0056] A second object of the present invention is to provide an air conditioner for implementing the air conditioning control method based on sound reverberation as described above.

[0057] The air conditioner combines reverberation testing with room insulation performance evaluation to achieve real-time comprehensive evaluation, significantly improving the accuracy and practicality of the evaluation. In addition, adjusting the operating parameters of the air conditioner according to the room insulation performance evaluation results can reduce the energy consumption of the air conditioner and improve the user experience.

[0058] The beneficial effects of the present invention are:

[0059] The present invention provides an air conditioning control method based on sound reverberation, which includes: performing a reverberation test in the room where the air conditioner is installed, obtaining an audio signal of the reverberation test; calculating the reverberation time according to the obtained audio signal; evaluating the thermal insulation performance of the room where the air conditioner is installed according to the reverberation time; and adjusting the operating parameters of the air conditioner according to the thermal insulation performance of the installation room. In actual applications, after obtaining the reverberation time, the background server will further compare and evaluate the reverberation time and the room thermal insulation performance experimental data corresponding to the reverberation time, analyze and obtain the thermal insulation performance of the current room. Based on the evaluation result of the thermal insulation performance, the background server sends corresponding control instructions to the air conditioning control module. The air conditioning control module adjusts the operating parameters of the air conditioner according to these instructions, such as temperature setting, wind speed and running time, etc. Since the thermal insulation performance of the installation room can be obtained according to the real-time reverberation time, the control method can realize accurate control of the air conditioner, realize efficient energy-saving control of the air conditioner, and improve energy utilization efficiency.

[0060] The present application also provides an air conditioner for implementing the above-mentioned air conditioning control method based on sound reverberation, which can adjust the operating parameters of the air conditioner according to the room insulation performance evaluation results, reduce the energy consumption of the air conditioner, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 is a flow chart of an air conditioning control method based on sound reverberation provided in an embodiment of the present invention;

[0062] Figure 2 is a flow chart of calculating reverberation time provided in an embodiment of the present invention;

[0063] Figure 3is a flow chart of evaluating the thermal insulation performance of a room where an air conditioner is installed by using reverberation time provided in an embodiment of the present invention;

[0064] Figure 4 is a flow chart of adjusting the operating parameters of the air conditioner according to the thermal insulation performance of the installation room provided in an embodiment of the present invention;

[0065] Figure 5 It is a logic diagram of an air conditioner provided in an embodiment of the present invention executing the air conditioning control method based on sound reverberation of the present application. DETAILED DESCRIPTION

[0066] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0067] In the field of architectural acoustics, reverberation time is a crucial parameter that describes the time required for sound to gradually decay and disappear in a closed space. The length of reverberation time has a direct impact on the indoor sound quality and the comfort of the acoustic environment. Specifically, a reverberation time that is too short may cause the sound to appear dry and lack a sense of naturalness; while a reverberation time that is too long may make the sound blurred, affecting the clarity of speech and the sense of hierarchy of music listening. In addition, the reverberation time is also closely related to the sound absorption and reflection properties of building materials and the thermal insulation properties of the environment. At present, there are technical solutions related to reverberation testing on the market, but the existing technical solutions related to reverberation testing are mainly in the field of sound source localization technology, specifically by obtaining sound information of a specific place, achieving accurate sound source localization, and providing data support for the operation of other equipment. However, there is a lack of research in the prior art on combining reverberation time with the operation control of air-conditioning equipment.

[0068] Based on this, the present application provides an air conditioning control method based on sound reverberation.

[0069] Example 1

[0070] like Figure 1-Figure 5 As shown, this embodiment provides an air conditioning control method based on sound reverberation, including:

[0071] S100, performing a reverberation test in a room where the air conditioner is installed, and obtaining an audio signal of the reverberation test;

[0072] S200, calculating the reverberation time according to the acquired audio signal;

[0073] Specifically, calculating the reverberation time according to the acquired audio signal includes:

[0074] S210, preprocessing the audio signal to remove noise in the audio signal;

[0075] S220, acquiring characteristic information of the processed audio signal;

[0076] S230: Calculate the reverberation time by using the acquired characteristic information of the audio signal in combination with a preset algorithm.

[0077] Audio noise may come from environmental background noise, electronic noise inside the device, etc. To effectively remove these noises, filtering techniques such as bandpass filtering, notch filtering, etc., as well as noise estimation and suppression algorithms such as spectral subtraction and Wiener filtering can be used. The preprocessing process can also include signal enhancement, which is to enhance the audio signal on the basis of noise removal to improve the quality and recognizability of the signal. This includes but is not limited to dynamic range compression, gain control, etc.

[0078] In this embodiment, the calculation formula of the reverberation time includes:

[0079] T60 = KV / A;

[0080] Among them: T60 is the reverberation time; K is a constant related to the humidity of the space, generally K = 0.161s / m; V is the volume of the closed room, the unit is m3; A is the total sound absorption, which is the product of the total surface area of ​​the room and its average sound absorption coefficient;

[0081] In practical applications, if the indoor surface is made of a variety of different materials, the total sound absorption A is the sum of the sound absorption of various materials, that is, A = Σsiai (ai is the sound absorption coefficient of each material, si is the corresponding surface area). If there are objects such as furniture or people in the room whose surface area is difficult to determine, their sound absorption also needs to be considered. This reverberation time calculation method is suitable for occasions where the total indoor sound absorption is small and the reverberation time is long.

[0082] S300, evaluate the thermal insulation performance of the room where the air conditioner is installed based on the reverberation time;

[0083] Specifically, the step of evaluating the thermal insulation performance of the room where the air conditioner is installed according to the reverberation time includes:

[0084] S310, preset reverberation time and thermal insulation performance comparison table;

[0085] S320: Acquire real-time reverberation time, compare the real-time reverberation time with the comparison relationship table, and obtain the thermal insulation performance of the current space.

[0086] In order to correlate and evaluate the reverberation time and thermal insulation performance, this application first presets a reverberation time and thermal insulation performance comparison table. This table establishes the corresponding relationship between the reverberation time and the thermal insulation performance of the room based on a large amount of experimental data. The comparison table can be customized according to different building materials, room structures and other factors to ensure the accuracy of the evaluation.

[0087] During the operation of the air conditioner, the present invention uses the speaker and microphone of the voice air conditioner as the sound source and audio pickup device. Through the wireless communication link of the voice air conditioner, the picked up audio is transmitted to the background server for analysis and processing, so as to obtain the real-time reverberation time. This step does not require the purchase of additional professional acoustic equipment, which reduces costs and simplifies the operation process.

[0088] After the backend server obtains the real-time reverberation time, it compares it with the preset reverberation time and thermal insulation performance comparison table. Through the comparison, the thermal insulation performance evaluation result of the current space can be obtained. The evaluation result serves as an important basis for air conditioning energy-saving control.

[0089] S400, adjust the operating parameters of the air conditioner according to the thermal insulation performance of the installation room.

[0090] Specifically, adjusting the operating parameters of the air conditioner according to the thermal insulation performance of the installation room includes:

[0091] S410, adjusting the temperature setting and wind speed of the air conditioner according to the thermal insulation performance of the installation room;

[0092] S420, obtaining the real-time temperature of the installation room, and determining the time T required for the real-time temperature to reach the preset temperature;

[0093] S430: Adjust the operating parameters of the air conditioner according to the required time T.

[0094] In this embodiment, during the thermal insulation performance evaluation process, the server comprehensively considers multiple factors such as the room wall material, window type, door gap size, etc., and calculates the thermal insulation performance evaluation value. Based on this evaluation value, the server intelligently adjusts the operating parameters of the air conditioner: if the thermal insulation performance is good, the temperature setting is appropriately lowered and the wind speed is reduced; otherwise, the temperature setting is correspondingly increased and the wind speed is increased. At the same time, the server also calculates the time T required to reach the preset temperature based on the difference between the real-time temperature and the preset temperature. Based on the T value, the server further optimizes the operation of the air conditioner: when T is longer, the air conditioner is started in advance; when T is shorter, the power is reduced when approaching the preset temperature to avoid excessive cooling or heating.

[0095] The air conditioning control method based on sound reverberation of the present application is specifically as follows:

[0096] When the air conditioner is in operation, the control system of the air conditioner first starts the environmental information acquisition and reverberation test. The temperature sensor monitors and analyzes the indoor ambient temperature in real time, and feeds the monitoring data back to the air conditioner control module. The air conditioner control module transmits these temperature data back to the background server through the wireless communication module. The background server evaluates whether the current environment is suitable for reverberation testing based on the received indoor ambient temperature value. For example, when the indoor ambient temperature is stable in a certain range (such as 20-25 degrees Celsius), the background server will determine that the environment is suitable and calculate the speed of sound in the current environment.

[0097] Subsequently, the backend server sends a command to start the reverberation test to the air conditioner voice module through the wireless communication module. After receiving the command, the air conditioner voice module plays a specific test signal, such as white noise or pulse sound, through its built-in speaker. The selection and playback parameters of the test signal are adjusted by the backend server according to the ambient temperature and the calculated sound speed to ensure the accuracy of the test.

[0098] At the same time, the microphone array in the air conditioner voice module synchronously picks up the sound signal in the room. The picked-up audio signal is processed by the voice recognition algorithm module to remove noise and other interference, and then transmitted to the backend server through the wireless communication module. The backend server uses acoustic analysis software or algorithms to process the received audio signal and calculate the reverberation time.

[0099] After obtaining the reverberation time, the backend server will further conduct comparative evaluation based on the reverberation time and the room insulation performance experimental data corresponding to the reverberation time, analyze and obtain the insulation performance of the current room. The evaluation method includes comparing the difference between the reverberation time and the standard value, analyzing the change trend of the reverberation time over time, and making a comprehensive judgment based on the insulation performance of the corresponding reverberation value or approximate value in the experimental data.

[0100] Based on the evaluation results of the thermal insulation performance, the background server sends corresponding control instructions to the air conditioning control module. The air conditioning control module adjusts the operating parameters of the air conditioner according to these instructions, such as temperature setting, wind speed and running time, to achieve energy-saving control. In addition, the system also uses a formula to calculate the speed of sound in the current environment based on the ambient temperature collected by the temperature sensor, and optimizes the sound source localization algorithm accordingly. The optimized sound source localization algorithm can measure the target location information more accurately, allowing the air conditioning equipment to intelligently adjust the air supply direction and wind speed according to the accurately measured angle and distance values.

[0101] Example 2

[0102] like Figure 1-Figure 5 As shown, in this embodiment, another method for calculating the reverberation time is provided.

[0103] Specifically, the calculation formula of the reverberation time includes:

[0104] T60=-Sln(1-ā) / KV

[0105] Among them: T is the reverberation time; S is the total surface area of ​​the room; ā is the average sound absorption coefficient of the indoor surface; K is a constant related to the speed of sound, generally taken as 0.161; V is the volume of the room.

[0106] In practical applications, in order to calculate the reverberation time of each frequency band, the random incidence sound absorption coefficient of various materials in each frequency band can be substituted into the formula. Usually, the sound absorption coefficients of six frequency bands, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, and 4000Hz, are used for calculation.

[0107] The calculation method of this embodiment is suitable for situations where the total indoor sound absorption is large, the reverberation time is short, or a more accurate calculation result is required.

[0108] Example 3

[0109] like Figure 1-Figure 5 As shown, in this embodiment, after adjusting the operating parameters of the air conditioner according to the thermal insulation performance of the installation room, it also includes:

[0110] S500: Obtain the real-time temperature of the room where the air conditioner is installed, and determine the real-time sound speed according to the obtained real-time temperature:

[0111] S600, using the determined real-time sound speed to locate the sound source of the target position;

[0112] S700: Adjust the air supply mode of the air conditioner according to the located target position.

[0113] Specifically, in this embodiment, the method of using the determined real-time sound speed to locate the sound source of the target position includes:

[0114] The real-time sound velocity V is calculated using the formula (V=V0+0.6T).

[0115] Where V0 is the speed of sound waves at zero degrees, 332 m / s, and T is the ambient temperature;

[0116] Use the optimized formulas (t1 = d1 / V) and (t2 = d2 / V) to calculate the delay time t1 and t2 from the sound source to different microphones, where d1 and d2 are the distances from the sound source to different microphones, and V is the speed of sound in the current environment;

[0117] According to the calculated delay time, the sound source of the target position is located.

[0118] The specific implementation process of this implementation is as follows: The air-conditioning system is embedded with a high-precision temperature sensor to monitor the temperature changes of the installation room in real time. The real-time sound speed V in the current environment is calculated using the formula (V=V0+0.6T). Among them, V0 is the sound wave speed of 332m / s at zero degrees, and T is the ambient temperature measured in real time. The air-conditioning system is equipped with a microphone array to capture the sound signal in the room. The microphone array includes at least two microphones. The delay time t1 and t2 of the sound source signal reaching different microphones are calculated by the optimized formulas (t1=d1 / V) and (t2=d2 / V). Among them, d1 and d2 represent the distance between the sound source and the microphone, respectively, and V is the real-time sound speed. Combined with the sound source localization algorithm, the calculated delay time is used to accurately determine the sound source position. Then, based on the sound source localization results, the air-conditioning system intelligently adjusts the air supply direction and wind speed to ensure that the cold air or hot air is accurately delivered to the target location. This intelligent adjustment not only improves user comfort, but also achieves more efficient energy utilization. Moreover, the existing hardware resources of the air-conditioning system (such as temperature sensors, microphone arrays, etc.) can be utilized, without the need to purchase additional professional acoustic equipment, thereby simplifying the operation process and reducing costs.

[0119] It should be noted that t1 and t2 in this embodiment are delay times for two microphones. If there are more microphones in the air conditioner, multiple delay time calculations can be performed.

[0120] Example 4

[0121] like Figure 1-Figure 5 As shown, in this embodiment, before performing the reverberation test in the room where the air conditioner is installed, the method further includes:

[0122] Obtain the real-time environmental conditions of the room where the air conditioner is installed, and determine whether the real-time environmental conditions are suitable for reverberation testing;

[0123] When the real-time environment conditions are suitable for reverberation testing, start the reverberation test.

[0124] In actual applications, the temperature sensor, humidity sensor and other environmental monitoring devices built into the air conditioning system can be used to capture and record key environmental parameters such as temperature and humidity in the room where the air conditioner is installed in real time. The monitored environmental data will be quickly transmitted to the background server through the wireless communication module for subsequent analysis and processing. The background server will carefully analyze the received environmental data to determine whether the current environment is stable. For example, when the indoor ambient temperature is stable in a suitable range (such as 20-25 degrees Celsius) and the humidity is also at an ideal level, the environment can be considered stable and suitable for reverberation testing. In addition, the background server will also evaluate the environmental noise conditions. If the current environmental noise is too high, it may seriously interfere with the accuracy of the reverberation test. Therefore, only when the environmental noise is below a certain threshold will it be considered suitable for reverberation testing.

[0125] When it is confirmed that the real-time environmental conditions are suitable for reverberation testing, the backend server will immediately send instructions to the air conditioner voice module through the wireless communication module to control the speaker in the air conditioner to play a specific test signal (such as white noise or pulse sound)

[0126] The microphone array in the air conditioner voice module will synchronously pick up the sound signals in the room and transmit these precious audio signals to the backend server through the wireless communication module. The backend server will use professional acoustic analysis software or algorithms to carefully process the audio signals and finally calculate the reverberation time.

[0127] Example 5

[0128] like Figure 1-Figure 5 As shown, this embodiment provides an air conditioner, which is used to implement the air conditioning control method based on sound reverberation as described above.

[0129] Specifically, the air conditioner has multiple key components integrated inside, including microphone arrays, speakers, temperature sensors, wireless communication modules, and backend servers, which work together to complete the reverberation test and thermal insulation performance evaluation tasks. The air conditioner combines the reverberation test with the room thermal insulation performance evaluation to achieve real-time comprehensive evaluation, significantly improving the accuracy and practicality of the evaluation. In addition, adjusting the operating parameters of the air conditioner according to the room thermal insulation performance evaluation results can reduce the energy consumption of the air conditioner and improve the user experience.

[0130] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings. In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0131] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0132] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this application. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air conditioning control method based on sound reverberation, characterized in that: include: Conduct a reverberation test in the room where the air conditioner is installed and obtain the audio signal of the reverberation test; Calculate the reverberation time according to the acquired audio signal; Evaluate the thermal insulation performance of the room where the air conditioner is installed based on the reverberation time; Adjust the operating parameters of the air conditioner according to the thermal insulation performance of the room where it is installed.

2. The air conditioning control method based on sound reverberation according to claim 1, characterized in that: Calculating the reverberation time according to the acquired audio signal includes: Preprocess the audio signal to remove noise from the audio signal; Acquire characteristic information of the processed audio signal; The reverberation time is calculated by using the characteristic information of the acquired audio signal in combination with a preset algorithm.

3. The air conditioning control method based on sound reverberation according to claim 2, characterized in that: The calculation formula of the reverberation time includes: T60 = KV / A; Where: T60 is the reverberation time; K is a constant related to the humidity of the space, generally K = 0.161s / m; V is the volume of the closed room; A is the total sound absorption, which is the product of the total surface area of ​​the room and its average sound absorption coefficient; Or, the calculation formula of the reverberation time includes: T60=-Sln(1-ā) / KV Where: T is the reverberation time; S is the total surface area of ​​the room; ā is the average sound absorption coefficient of the indoor surface; K is a constant related to the speed of sound, K = 0.160-0.162; V is the volume of the room.

4. The air conditioning control method based on sound reverberation according to claim 1, characterized in that: The method of evaluating the thermal insulation performance of the room where the air conditioner is installed based on the reverberation time includes: Preset reverberation time and thermal insulation performance comparison table; Get the real-time reverberation time, compare the real-time reverberation time with the reference relationship table, and get the thermal insulation performance of the current space.

5. The air conditioning control method based on sound reverberation according to claim 4, characterized in that: The step of obtaining the real-time reverberation time also includes: Obtain the relationship between the real-time reverberation time and time, and evaluate the thermal insulation performance of the current space based on the obtained relationship.

6. The air conditioning control method based on sound reverberation according to any one of claims 1 to 4, characterized in that: The step of adjusting the operating parameters of the air conditioner according to the thermal insulation performance of the room where the air conditioner is installed includes: Adjust the temperature setting and wind speed of the air conditioner according to the thermal insulation performance of the room where it is installed; Get the real-time temperature of the installation room and determine the time T required for the real-time temperature to reach the preset temperature; According to the required time T, the operating parameters of the air conditioner are adjusted.

7. An air conditioning control method based on sound reverberation according to any one of claims 1 to 4, characterized in that: After adjusting the operating parameters of the air conditioner according to the thermal insulation performance of the installation room, the method further includes: Get the real-time temperature of the room where the air conditioner is installed, and determine the real-time sound speed based on the real-time temperature obtained: Using the determined real-time sound speed, the sound source of the target position is located; Adjust the air supply mode of the air conditioner according to the target location.

8. The air conditioning control method based on sound reverberation according to claim 7, characterized in that: The method of using the determined real-time sound speed to locate the sound source of the target position includes: The real-time sound velocity V is calculated using the formula (V=V0+0.6T). Where V0 is the speed of sound waves at zero degrees, 332 m / s, and T is the ambient temperature; Use the optimized formulas (t1 = d1 / V) and (t2 = d2 / V) to calculate the delay time t1 and t2 from the sound source to different microphones, where d1 and d2 are the distances from the sound source to different microphones, and V is the speed of sound in the current environment; According to the calculated delay time, the sound source of the target position is located.

9. The air conditioning control method based on sound reverberation according to any one of claims 1 to 4, characterized in that: Before the reverberation test is performed in the air conditioner installation room, the following steps are also included: Obtain the real-time environmental conditions of the room where the air conditioner is installed, and determine whether the real-time environmental conditions are suitable for reverberation testing; When the real-time environment conditions are suitable for reverberation testing, start the reverberation test.

10. An air conditioner, characterized in that: Used to implement an air conditioning control method based on sound reverberation as described in any one of claims 1-9.

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