Power supply switching method and system for audio frequency of power amplifier

Abstract

The embodiment of the invention provides a power supply switching method and system for power amplifier audio. The system comprises a power supply module, a power amplifier module, a detection module and a control module, the detection module is configured to collect operation information of the power amplifier module and environment information of a target area; the control module is configured to determine target power supply power based on the operation information and the environment information, and control the power supply module based on the target power supply power; the power supply module is configured to output target power supply power to the power amplifier module.

Description

Technical Field

[0001] The present invention relates to the field of audio technology, and more particularly to a power switching method and system for an audio power amplifier. Background Art

[0002] Amplified audio in public places can convey information and audio content and is widely used in airports, stations, shopping malls, schools, conference centers, etc. If the power supply power of the amplifier audio is fixed, when the flow of people in the public place is small and / or the public place is not open, it may cause a certain amount of energy waste.

[0003] Therefore, there is a need for a power switching method and system for an audio amplifier that can automatically adjust the power supply to save labor costs and energy while meeting the audio amplifier requirements. Summary of the invention

[0004] One of the embodiments of the present specification provides a power switching system for an audio amplifier, the system comprising a power module, a power amplifier module, a detection module and a control module; the detection module is configured to collect operating information of the power amplifier module and environmental information of a target area; the control module is configured to determine a target power supply power based on the operating information and the environmental information, and to control the power supply module based on the target power supply power; the power supply module is configured to output the target power supply power to the power amplifier module.

[0005] One or more embodiments of the present specification provide a power switching method for an audio amplifier, which is executed by a control module. The power switching method for the audio amplifier includes: obtaining operating information of the power amplifier module and environmental information of a target area; determining a target power supply power based on the operating information and the environmental information; and controlling the power supply module to output the target power supply power to the power amplifier module based on the target power supply power.

[0006] One or more embodiments of the present specification provide a power switching device for an audio power amplifier, including a processing device, wherein the processing device is used to execute the power switching method for the audio power amplifier.

[0007] One or more embodiments of the present specification provide a computer-readable storage medium, wherein the storage medium stores computer instructions. When a computer reads the computer instructions in the storage medium, the computer executes the above-mentioned power switching method for the power amplifier audio. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0009] Figure 1It is a schematic diagram of an application scenario of a power switching system for an audio amplifier according to some embodiments of this specification;

[0010] Figure 2 is an exemplary schematic diagram of a power switching system for an audio power amplifier according to some embodiments of this specification;

[0011] Figure 3 is an exemplary flow chart of a power switching method for an audio power amplifier according to some embodiments of this specification;

[0012] Figure 4 is an exemplary schematic diagram of a power determination model according to some embodiments of this specification;

[0013] Figure 5 It is an exemplary flow chart of a power switching method for an audio power amplifier according to some other embodiments of this specification. DETAILED DESCRIPTION

[0014] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this specification. For ordinary technicians in this field, this specification can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0015] It should be understood that the "system", "device", "unit" and / or "module" used herein are a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0016] As shown in this specification and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0017] Flowcharts are used in this specification to illustrate the operations performed by the system according to the embodiments of this specification. It should be understood that the preceding or following operations are not necessarily performed precisely in order. Instead, the steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0018] Figure 11 is a schematic diagram of an application scenario of a power switching system for an audio amplifier according to some embodiments of this specification. Airports, stations, shopping malls, schools, conference centers and other places broadcast audio to convey information and audio content. Therefore, by applying a power switching method and system for audio amplifiers, it is possible to save labor costs and energy while meeting the needs of audio amplifiers, which has important practical significance. In some embodiments, an application scenario 100 of a power switching system for audio amplifiers includes a power switching system 110 for audio amplifiers, a network 120, a playback device 130, a processing device 140 and a storage device 150.

[0019] The power switching system 110 for the power amplifier audio refers to a system for controlling the power switching of the power amplifier audio. In some embodiments, the power switching system 110 for the power amplifier audio includes a power module 111, a power amplifier module 112, a detection module 113, and a control module 114. For more information about the power switching system 110 for the power amplifier audio, please refer to Figure 2 The corresponding description.

[0020] The network 120 is used to connect devices such as the power switching system 110, the playback device 130, the processing device 140, and the storage device 150 of the power amplifier audio. The network 120 enables various parts in the application scenario of the power switching system of the power amplifier audio to communicate and facilitate the exchange of data and / or information. In some embodiments, the network 120 can be any one or more of a wired network or a wireless network. For example, the network 120 includes a cable network, an optical fiber network, a telecommunication network, etc., or any combination thereof.

[0021] The playback device 130 refers to a device for playing audio. For example, the playback device 130 includes an audio device, a television, a speaker, etc. In some embodiments, the number of the playback device 130 can be one or more.

[0022] The processing device 140 refers to a device for processing data related to the power switching system of the power amplifier audio. For example, the processing device 140 obtains the operation information data of the power amplifier module 112 and the environmental information data of the target area. Then, the target power supply power is determined based on the operation information data and the environmental information data. Then, based on the target power supply power, the power supply module 111 is controlled to output the target power supply power to the power amplifier module 112. In some embodiments, the processing device 140 is integrated or installed on the power switching system 110 of the power amplifier audio. For example, the processing device 140 is integrated or installed on the control module 114.

[0023] In some embodiments, the processing device 140 is a single server or a server group. The server group can be centralized or distributed. In some embodiments, the processing device 140 is local or remote. In some embodiments, the processing device 140 is implemented on a cloud platform. By way of example only, the cloud platform includes a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-layer cloud, etc., or any combination thereof.

[0024] The storage device 150 refers to a device for storing data, instructions and / or any other information. In some embodiments, the storage device stores data and / or instructions related to power switching of the power amplifier audio. For example, the storage device stores operating information and environmental information.

[0025] The storage device may include one or more storage components, each of which may be an independent device or a part of another device (eg, processing device 140, etc.). In some embodiments, the storage device may be implemented on a cloud platform.

[0026] In some embodiments, the application scenario 100 of the power switching system for the power amplifier audio further includes one or more other devices, for example, a user terminal (not shown in the figure).

[0027] A user terminal refers to one or more terminal devices or software used by a user. In some embodiments, the user terminal is a mobile device such as a mobile phone, a tablet computer, a laptop computer, or any combination thereof. In some embodiments, the user terminal interacts with other components in the application scenario 100 of the power switching system for the power amplifier audio through the network 120. A user refers to an operator of the power switching system for the power amplifier audio.

[0028] It should be noted that the above description of the application scenario 100 of the power switching system for the power amplifier audio is provided for illustrative purposes only and is not intended to limit the scope of the present application. For those of ordinary skill in the art, various variations and modifications can be made under the guidance of the present application. For example, the configuration and / or function of the application scenario 100 of the power switching system for the power amplifier audio can be changed or modified according to the specific implementation scenario. However, these variations and modifications do not depart from the scope of the present application.

[0029] Figure 2 is an exemplary module diagram of a power switching system for an audio power amplifier according to some embodiments of this specification. Figure 2 As shown, the power switching system 110 for the power amplifier audio includes a power module 111 , a power amplifier module 112 , a detection module 113 and a control module 114 .

[0030] The power supply unit (PSU) 111 refers to a component in an electronic device for converting power into required voltage and current. In some embodiments, the power supply unit 111 includes a linear power supply module, a switching power supply module, and the like.

[0031] In some embodiments, the power module 111 is controlled by the control module 114 .

[0032] In some embodiments, the power module 111 is configured to output target power to the power amplifier module 112 .

[0033] The power amplifier module 112 is a component that processes the electrical signal and outputs the processed electrical signal to the playback device 130. In some embodiments, the power amplifier module 112 performs signal filtering, enhancement, and other processing on the electrical signal to improve the quality and strength of the electrical signal. Furthermore, the power amplifier module 112 can output the amplified electrical signal to the playback device 130, and the playback device 130 converts the amplified electrical signal into a sound signal for audio playback.

[0034] In some embodiments, the power amplifier module 112 is connected to the playback device 130 by wire or wirelessly. In some embodiments, the power amplifier module 112 is a separate module. In some embodiments, the power amplifier module 112 can be integrated into the playback device 130.

[0035] The detection module 113 refers to a component used to monitor, analyze and evaluate a specific parameter or state. For example, the detection module 113 includes a temperature sensor, a current sensor, a voltage sensor, an impedance analyzer, a light sensor, an ultra-wideband (UWB) sensor, a passive infrared (PIR) sensor, an image acquisition device, and a sound acquisition device.

[0036] The detection module 113 is configured to collect the operation information of the power amplifier module 112 and the environmental information of the target area. In some embodiments, the detection module 113 is further configured to collect the audio source. In some embodiments, the detection module 113 is further configured to collect reference information at a preset frequency. In some embodiments, the detection module 113 is further configured to collect image information and sound information of the target area.

[0037] The control module 114 is a module for receiving input signals, processing information and outputting corresponding control instructions. In some embodiments, the control module 114 may be integrated with a processing device 140 .

[0038] In some embodiments, the control module 114 is configured to determine a target power supply based on the operation information and the environment information, and control the power supply module 111 based on the target power supply.

[0039] In some embodiments, the control module 114 includes a time management module and a decision module; the time management module is configured to obtain time information and planning information; the decision module is configured to determine the target power supply based on the operation information, environmental information, time information and planning information. Among them, the time management module includes a real-time clock (RTC). The clock module can be used to calibrate the clock through the network 120 when connected to the network to ensure that the accurate current time can be obtained through the time management module.

[0040] In some embodiments, the control module 114 is further configured to determine the detection requirement based on reference information and current power supply power; in response to the detection requirement meeting a preset requirement condition, the control detection module collects operation information and environmental information, and the preset requirement condition is related to the requirement threshold.

[0041] In some embodiments, the control module 114 is further configured to determine the target power based on the operation information, the environment information, the image information, and the sound information.

[0042] For more information about the power module 111, the power amplifier module 112, the detection module 113 and the control module 114, please refer to Figure 3-Figure 5 The corresponding description.

[0043] It should be understood that Figure 2 The system and its modules shown can be implemented in various ways. It should be noted that the above description of the power switching system and its modules for the power amplifier audio is only for the convenience of description and cannot limit this specification to the scope of the embodiments. It is understandable that for those skilled in the art, after understanding the principle of the system, it is possible to arbitrarily combine the modules or form a subsystem to connect with other modules without deviating from this principle. In some embodiments, Figure 2 The power module 111, the power amplifier module 112, the detector module 113 and the control module 114 disclosed in the specification can be different modules in a system, or one module can realize the functions of two or more modules mentioned above. For example, each module can share a storage module, or each module can have its own storage module. Such variations are all within the protection scope of this specification.

[0044] Figure 3 FIG. 1 is an exemplary flow chart of a power switching method for an audio power amplifier according to some embodiments of this specification. Figure 3 As shown, process 300 includes the following steps. In some embodiments, Figure 3 One or more operations of the process 300 are shown in Figure 1The power supply switching system of the power amplifier audio is implemented in the application scenario 100 shown. For example, Figure 3 The process 300 shown is stored in the storage device 150 in the form of instructions and is called and / or executed by the processing device 140. In some embodiments, the process 300 is executed by the control module 114.

[0045] In some embodiments, the control module 114 obtains the operating information of the power amplifier module 112 and the environmental information of the target area; determines the target power supply power based on the operating information and the environmental information; and controls the power supply module 111 to output the target power supply power to the power amplifier module 112 based on the target power supply power.

[0046] Step 310: Acquire operation information of the power amplifier module and environmental information of the target area.

[0047] Operation information refers to information related to the operation of the power amplifier module 112. In some embodiments, the operation information includes the temperature, current, voltage, impedance, etc. of the power amplifier module 112. For relevant information about the power amplifier module 112, please refer to Figure 2 The corresponding description.

[0048] In some embodiments, the operation information of the power amplifier module 112 is obtained based on the detection module 113. For example, the temperature of the power amplifier module 112 is obtained based on the temperature sensor in the detection module 113. For another example, the current of the power amplifier module 112 is obtained based on the current sensor. For another example, the voltage of the power amplifier module 112 is obtained based on the voltage sensor. For another example, the impedance of the power amplifier module 112 is obtained based on the impedance analyzer. In some embodiments, the operation information of the power amplifier module 112 can also be obtained based on other methods, which are not limited here.

[0049] In some embodiments, the operation information of the power amplifier module 112 can be used to determine whether the operation of the power amplifier module 112 is normal. For example, based on the temperature of the power amplifier module 112, it is determined whether the temperature of the power amplifier module is too high, and the power supply is adjusted accordingly to provide safety protection.

[0050] In some embodiments, the operation information of the power amplifier module 112 is also used to determine the maximum power of the playback device 130. For example, the maximum power that the playback device 130 can withstand can be determined based on current, voltage, and impedance, which is convenient for reference in actual power adjustment, thereby avoiding damage to the playback device 130 caused by excessive power.

[0051] The target area refers to the playback coverage area of ​​the playback device 130 corresponding to the power amplifier module 112. In some embodiments, the target area may include a preset area range where the power amplifier module 112 is set. For example, the target area may be a circular area with a radius of 100 meters and the power amplifier module 112 as the center. For another example, the target area may also be the area where the power amplifier module 112 is located, such as a shopping mall, KTV, etc. For another example, the target area may also include an area where the received volume is greater than a first decibel threshold when the power amplifier module 112 plays audio at a preset volume. Among them, the preset volume and the first decibel threshold can be set manually, which is not limited here. In some embodiments, the target area can also be determined based on other methods, which is not limited here.

[0052] Environmental information refers to information related to the environment of the target area. In some embodiments, the environmental information of the target area may include light sensing data, ultra-wideband (UWB) detection data, passive infrared (PIR) detection data, etc. In some embodiments, the light sensing data, UWB detection data, and PIR detection data are acquired based on the detection module 113. For example, the light sensing data, UWB detection data, and PIR detection data are acquired based on a light sensor, a UWB sensor, and a PIR sensor, respectively, which are not limited here. Among them, the UWB sensor uses ultra-wideband wireless signals for ranging and positioning to determine the UWB detection data; the PIR sensor determines the PIR detection data by detecting changes in infrared radiation in the surrounding environment.

[0053] Among them, the light sensing data is used to determine the light brightness of the internal environment of the target area, and the UWB detection data and the PIR detection data are used to determine the flow of people in the target area. In some embodiments, the control module 112 determines whether the target area is open for business based on the light sensing data. For example, when the target area is a shopping mall, if the light brightness of the internal environment of the mall detected is less than the preset brightness, it can be determined that the mall is closed; if the light brightness of the internal environment of the mall detected is greater than or equal to the preset brightness, it can be determined that the mall is open for business. Among them, the preset brightness can be a specific value set manually, which is not limited here.

[0054] Understandably, when there is an emergency in the target area (for example, temporary renovation, security check, etc.), the business is temporarily closed even during business hours. Determining whether the target area is open only by time information may result in inaccurate judgment. Combining light sensing data, UWB detection data, and PIR detection data to determine whether the target area is open can determine the real-time flow of people in the target area in real time, thereby making the information obtained more accurate.

[0055] Step 320: Determine the target power based on the operation information and the environment information.

[0056] The target power supply power refers to the power supply power corresponding to the operation information and the environmental information. In some embodiments, the target power supply power is limitedly adjustable, that is, it can only be selected between several fixed levels. For example, the target power supply power includes high-level power, medium-level power, low-level power, standby power, zero power, etc. Among them, the setting of the fixed value of the target power supply power can be manually set based on the specific scenario, and there is no restriction here. In some embodiments, the target power supply power is steplessly adjustable, that is, it can be freely adjusted within a continuous range without a fixed level.

[0057] In some embodiments, after the power module 111 outputs the target power to the power amplifier module 112, the power amplifier module 112 plays the volume corresponding to the power amplifier power according to the power amplifier power corresponding to the target power. It can be understood that the power amplifier power of the power amplifier module 112 is proportional to the volume, and a higher power amplifier power can drive the playback device 130 to a higher sound pressure level (SPL), that is, to produce a louder volume. In addition, the power supply power is proportional to the power amplifier power of the power amplifier module 112. Therefore, the power supply power is proportional to the volume.

[0058] In some embodiments, the operation information of the power amplifier module 112 can reflect the safety of the power amplifier module 112, thereby affecting the target power supply. For example, when the temperature of the power amplifier module 112 is too high, there is a safety hazard, and the control module can reduce the power supply power, thereby achieving the effect of cooling the power amplifier module 112.

[0059] In some embodiments, the environmental information of the target area can reflect the flow of people and business conditions, thereby affecting the target power. For example, when it is detected that the flow of people in the target area is large, but the actual power is small, the control module can increase the power to increase the volume. For another example, when it is detected that the flow of people in the target area is small, but the actual power is large, the control module can reduce the power to reduce the volume.

[0060] It is understandable that when determining the target power supply power, the maximum power that the playback device can withstand needs to be considered to avoid device damage. That is, the control module 114 can determine the maximum power that the playback device can withstand through operation information (e.g., current, voltage, impedance), so that when determining the target power supply power, the target power supply power is not higher than the maximum power that the playback device can withstand.

[0061] In some embodiments, the control module 114 can determine the target power supply power based on the operation information and the environmental information through preset rules. In some embodiments, the control module can organize the historical operation information and the historical environmental information, and the historical power supply power corresponding to the above-mentioned historical operation information and the historical environmental information into preset rules, and determine the target power supply power corresponding to the operation information and the environmental information based on the preset rules. Among them, the historical power supply power corresponding to the historical operation information and the historical environmental information can be the actual power supply power after manual adjustment. For example, the control module 114 gradually adjusts the power supply power in order from small to large, and when the volume received at each position in the target area is greater than the area of ​​the second decibel threshold, the power supply power at this time is used as the actual power supply power after adjustment. Among them, the second decibel threshold can be set manually, which is not limited here.

[0062] In some embodiments, the control module 114 may also determine the target power supply power through a power determination model based on the operation information and the environment information.

[0063] The power determination model may be a machine learning model. For example, the power determination model may be a deep neural network model (NN) or a convolutional neural network (CNN). The power determination model may also be other neural networks or any combination thereof.

[0064] In some embodiments, the input of the power determination model may include operation information and environment information, and the output of the power determination model may include a target power supply power.

[0065] In some embodiments, the power determination model can be obtained by training multiple first training samples with first labels. In some embodiments, the first training sample can include historical operation information and historical environment information. In some embodiments, the historical operation information and historical environment information can be obtained based on historical data. The first label can be the actual power supply power after manual adjustment corresponding to the historical operation information and the historical environment information. For the relevant content of manual adjustment, please refer to the corresponding description above.

[0066] The first sample training set is input into the initial determination model, a loss function is constructed by the first label and the result of the initial determination model, and the parameters of the initial determination model are iteratively updated based on the loss function. When the loss function of the initial determination model meets the preset conditions, the model training is completed and a trained power determination model is obtained. The preset conditions may be that the loss function converges, the number of iterations reaches a threshold, etc.

[0067] In some embodiments, the control module 114 may obtain the audio source and determine the target power based on the operation information, the environment information and the audio source.

[0068] The audio source refers to the signal source of the audio. For example, the audio source includes streaming software, microphones, etc. In some embodiments, the audio source is connected to the power amplifier module 112 to provide an audio signal. In some embodiments, the control module 114 identifies the audio source based on the audio input channel. For example, the control module 114 detects the input port of the audio signal. If the audio signal enters from the microphone interface, it can be determined that its source is a microphone; if it enters from the audio playback interface, it is determined to be streaming software. In some embodiments, the control module 114 can retrieve the audio source manually input through the user terminal.

[0069] In some embodiments, the audio source may affect the target power supply. It is understandable that when the audio source is a microphone, it is generally an information notification; when the audio source is streaming media software, it is generally music playback. Information notifications have higher requirements on user reception than music playback. Therefore, under the same operating information and environmental information conditions, when the audio source is a microphone, its power supply should be greater than the power supply when the audio source is streaming media software. This makes the volume of the audio source from the microphone loud enough to ensure that all users can notice it.

[0070] In some embodiments, the control module 114 determines the target power supply power based on the operation information, the environmental information and the audio source. For example, the control module 114 can determine the target power supply power through the power determination rule based on the operation information, the environmental information and the audio source. The control module 114 can organize the historical operation information, the historical environmental information and the historical audio source, and the historical power supply power corresponding to the historical operation information, the historical environmental information and the historical audio source into a power determination rule, and determine the target power supply power corresponding to the operation information, the environmental information and the audio source based on the power determination rule. Among them, the historical power supply power corresponding to the historical operation information, the historical environmental information and the historical audio source can be the actual power supply power after manual adjustment, and the relevant content of the manual adjustment can refer to the corresponding description above. For another example, when training the power determination model, the first training sample can also include the historical audio source. Accordingly, the input of the power determination model can further include the audio source.

[0071] In some embodiments of the present specification, by adding the audio source to determine the target power, the determined target power can be made more consistent with actual playback requirements.

[0072] In some embodiments, the control module 114 obtains time information and planning information, and determines the target power supply power based on the operation information, environmental information, time information and planning information. In some embodiments, the control module 114 includes a time management module and a decision module. The time management module is configured to obtain time information and planning information, and the decision module is configured to determine the target power supply power based on the operation information, environmental information, time information and planning information.

[0073] Time information refers to data or content related to time. In some embodiments, the time information includes the current season, time of year, specific time, etc. In some embodiments, the time information can be obtained through the network according to the time management module, or can be obtained based on other methods, which are not limited here.

[0074] Planning information refers to time-related power regulation information. In some embodiments, the planning information includes power on / off time information, power power information preset for each time period, and the like. For example, the planning information includes setting the power on at 10 a.m. and off at 10 p.m. For another example, the planning information also includes setting the power to be turned on at 3 p.m. to 5 p.m. to a high level of power. For another example, the planning information also includes setting the power to be turned on at 150 W from 1 p.m. to 3 p.m. In some embodiments, the control module 114 obtains the planning information by retrieving the planning information manually input into the time management module, or by other preset methods, which are not limited here.

[0075] It is understandable that the time information and the planning information will affect the target power. For example, when the time information is 1:00 a.m. and the planning information is to turn on the power at 10:00 a.m. and turn off the power at 10:00 p.m., the target power is set to zero power.

[0076] In some embodiments, the control module 114 determines the target power supply power based on the operation information, environment information, time information and planning information. For example, the control module 114 determines the target power supply power through a power determination table based on the operation information, environment information, time information and planning information. The control module 114 can organize the historical operation information, historical environment information, historical time information and historical planning information, and the historical power supply power corresponding to the historical operation information, historical environment information, historical time information and historical planning information into a power determination table, and determine the target power supply power corresponding to the operation information, environment information, time information and planning information based on the power determination table.

[0077] Among them, the historical power supply power corresponding to the historical operation information, historical environment information, historical time information and historical planning information can be the actual power supply power after manual adjustment. For the relevant content of manual adjustment, please refer to the corresponding description above. For another example, when training the power determination model, the first training sample can also include historical time information and historical planning information. Accordingly, the input of the power determination model can further include time information and planning information.

[0078] In some embodiments of the present specification, the target power is determined by combining time information and planning information, so that the determined target power is more in line with actual playback requirements.

[0079] In some embodiments, the control module 114 obtains image information and sound information of the target area, and determines the target power source power based on the operation information, environment information, image information and sound information.

[0080] Image information refers to an image of the target area. In some embodiments, the control module 114 obtains at least one image of the target area through an image acquisition device (eg, a camera, etc.) in the detection module 113, and uses the at least one image as the image information.

[0081] Sound information refers to the ambient sound of the target area. Among them, ambient sound refers to the sound that is not directly generated by human factors, but caused by various elements in the natural or social environment. In some embodiments, when the playback device 130 does not play the sound, the control module 114 obtains at least one segment of ambient sound at a preset position of the target area through the sound acquisition device (for example, a microphone, etc.) in the detection module 113, and uses the at least one segment of ambient sound as sound information. Among them, the preset position of the target area refers to a pre-set position in the target area. For example, the preset position of the target area includes the geometric center of the target area, the corner point of the target area, etc.

[0082] It is understandable that the image information and the sound information will affect the target power. For example, if the image information shows that there is a large flow of people, the target power can be set to a higher power (e.g., a high-level power). For another example, if the sound information shows that the ambient sound is loud, the target power can be set to a higher power.

[0083] In some embodiments, the control module 114 determines the target power supply power based on the operation information, environmental information, image information and sound information. For example, the control module 114 determines the target power supply power through a preset table based on the operation information, environmental information, image information and sound information. The control module 114 can organize the historical operation information, historical environmental information, historical image information and historical sound information, and the historical power supply power corresponding to the historical operation information, historical environmental information, historical image information and historical sound information into a preset table, and determine the target power supply power corresponding to the operation information, environmental information, image information and sound information based on the preset table. Among them, the historical power supply power corresponding to the historical operation information, historical environmental information, historical image information and historical sound information can be the actual power supply power after manual adjustment, and the relevant content of the manual adjustment can refer to the corresponding description above. For another example, when training the power determination model, the first training sample can also include historical image information and historical sound information. Accordingly, the input of the power determination model can further include image information and sound information.

[0084] For other embodiments of determining the target power supply power based on the operation information, environment information, image information and sound information by using a power determination model including an image feature extraction layer, a sound feature extraction layer and a strategy determination layer, see Figure 4 and its related description.

[0085] In some embodiments of the present specification, the target power is determined by combining image information and sound information, so that the judgment of the flow of people and business conditions can be more accurate, so that the determined target power can better meet the actual playback needs.

[0086] Step 330 : Based on the target power, control the power module to output the target power to the power amplifier module.

[0087] In some embodiments, the target power supply power is related to the target power supply power. For example, the greater the power amplifier power of the power amplifier module 112, the greater the target power supply power required. When the target power supply power is determined, the voltage and current of the power supply can be determined according to the target power supply power, thereby driving the power amplifier module 112 to amplify the input audio signal, and the amplified electrical signal is sent to the playback device, which converts it into a sound wave signal, and finally achieves the purpose of playing sound.

[0088] In some embodiments of the present specification, automatic management of power supply is achieved by combining various information, so that the power supply can be used more efficiently, thereby achieving the purpose of saving energy.

[0089] It should be noted that the above description of process 300 is only for example and illustration, and does not limit the scope of application of this specification. For those skilled in the art, various modifications and changes can be made to process 300 under the guidance of this specification. However, these modifications and changes are still within the scope of this specification.

[0090] In some embodiments, before executing steps 310-330, the control module 114 executes steps 510-530 to determine whether to execute steps 310-330. That is, the control module 114 obtains reference information at a preset frequency; determines the detection requirement based on the reference information and the current power supply; in response to the detection requirement meeting the preset requirement condition, obtains operation information and environmental information to execute steps 510-530 and re-determine the target power supply. For more information about steps 510-530, please refer to Figure 5 and its related description.

[0091] Figure 4 is an exemplary schematic diagram of a power determination model according to some embodiments of the present specification.

[0092] In some embodiments, Figure 4 As shown, the control module 114 determines the target power 480 through the power determination model 450 based on the operation information 430, the environment information 440, the image information 410 and the sound information 420. The power determination model 450 is a machine learning model, and the power determination model 450 includes an image feature extraction layer 451, a sound feature extraction layer 452 and a power determination layer 453; the input of the image feature extraction layer 451 is the image information 410, and the output is the image feature 460; the input of the sound feature extraction layer 452 is the sound information 420, and the output is the sound feature 470; the input of the power determination layer 453 is the operation information 430, the environment information 440, the image feature 460 and the sound feature 470, and the output is the target power 480.

[0093] In some embodiments, the power determination model 450 may be a machine learning model. The power determination model 450 includes an image feature extraction layer 451, a sound feature extraction layer 452, and a power determination layer 453. The image feature extraction layer 451, the sound feature extraction layer 452, and the power determination layer 453 are all CNN models.

[0094] In some embodiments, the inputs of the power determination model 450 include operation information 430 , environment information 440 , image information 410 , and sound information 420 , and the output includes a target power supply power 480 .

[0095] In some embodiments, the input of the image feature extraction layer 451 is the image information 410, and the output is the image feature 460. For more information about the image information 410, please refer to Figure 3 The corresponding description.

[0096] Image feature 460 is a feature of image information 410 reflecting the target area. For example, image feature 460 includes information such as the size, openness, and flow of people in the target area. The size of the target area refers to the area of ​​the target area. The openness refers to the area of ​​the target area that is not covered by shops, decorations, etc., and the proportion of the area of ​​the target area. The flow of people may refer to the actual flow of people in image information 410. For more information about the target area, please refer to Figure 3 The corresponding description.

[0097] In some embodiments, the image feature extraction layer 451 is trained by a plurality of second training samples with second labels. In some embodiments, the second training samples include historical image information. The second label is the actual image feature corresponding to the historical image information. In some embodiments, the historical image information can be obtained based on historical data. The second label is manually labeled according to the actual situation corresponding to the second training sample, that is, the size of the actual target area corresponding to the second training sample, the actual degree of openness and the actual flow of people are used as the actual image feature to determine the second label.

[0098] The training method of the image feature extraction layer 451 is similar to the training method of the power determination model based on the first training sample training, see Figure 3 .

[0099] In some embodiments, the input of the sound feature extraction layer 452 is the sound information 420, and the output is the sound feature 470. For more information about the sound information 420, see Figure 3 The corresponding description.

[0100] The sound feature 470 is a feature reflecting the acoustic information of the target area. For example, the sound volume, echo size, and other information of the target area. The sound volume refers to the intensity or loudness of the sound information, indicating the energy of the sound wave. The echo size refers to the size of the echo formed when part of the sound wave is reflected back when the emitted sound wave hits an obstacle.

[0101] In some embodiments, the sound feature extraction layer 452 can be obtained by training multiple third training samples with third labels. In some embodiments, the third training sample includes historical sound information. The third label is the actual sound feature corresponding to the historical sound information. In some embodiments, the control module 114 determines the actual sound feature based on the historical sound information through multiple algorithms. For example, the control module 114 determines the actual sound volume and the actual echo size as the actual sound feature based on the historical sound information through a digital signal processing (DSP) algorithm.

[0102] In some embodiments, the input of the power determination layer 453 is the image feature 460, the sound feature 470, the operation information 430 and the environment information 440, and the output of the power determination layer 453 is the target power 480. Among them, the image feature 460 is the output of the image feature extraction layer 451, and the sound feature 470 is the output of the sound feature extraction layer 452. For relevant contents about the operation information 430 and the environment information 440, please refer to Figure 3 The corresponding description.

[0103] In some embodiments, the power determination layer 453 can be trained by multiple fourth training samples with fourth labels. In some embodiments, the fourth training samples can include historical image features, historical sound features, historical operation information, and historical environmental information. In some embodiments, the historical image features, historical sound features, historical operation information, and historical environmental information can be acquired based on historical data. The fourth label is acquired in a similar manner to the first label, and can be the actual power after manual adjustment corresponding to the historical image features, historical sound features, historical operation information, and historical environmental information. For more information about manual adjustment, please refer to Figure 3 The corresponding description.

[0104] The training method of the power determination layer 453 is similar to the training method of the power determination model based on the first training sample, see Figure 3 .

[0105] In some embodiments of this specification, image features and sound features are further obtained from the image information and sound information to obtain image features and sound features that reflect the characteristics of the target area. The image features and sound features are considered while considering the flow of people, so that the target power is determined more accurately. For example, if the target area is relatively empty through image features, the volume of the playback device needs to be louder, and the target power needs to be higher.

[0106] It should be noted that the above description of the power determination model is only for example and illustration, and does not limit the scope of application of this specification. For those skilled in the art, various modifications and changes can be made to the power determination model under the guidance of this specification. However, these modifications and changes are still within the scope of this specification. For example, the sound feature extraction layer of the power determination model can be omitted, and the sound features can be directly determined based on the sound information through the DSP algorithm as the input of the power determination layer.

[0107] Figure 5 FIG. 1 is an exemplary flow chart of a power switching method for an audio power amplifier according to some other embodiments of this specification. Figure 5 As shown, process 500 includes the following steps. In some embodiments, Figure 5 One or more operations of the process 500 are shown in Figure 1 The power supply switching system of the power amplifier audio is implemented in the application scenario 100 shown. For example, Figure 5 The process 500 shown is stored in the storage device 150 in the form of instructions and is called and / or executed by the processing device 140. In some embodiments, the process 500 is executed by the control module 114.

[0108] In some embodiments, the control module 114 obtains reference information at a preset frequency; determines a detection requirement based on the reference information and the current power supply; and obtains operating information and environmental information in response to the detection requirement satisfying a preset requirement condition, wherein the preset requirement condition is related to a requirement threshold.

[0109] Step 510: Acquire reference information at a preset frequency.

[0110] Reference information refers to information used to determine whether it is necessary to redetermine the target power supply power. In some embodiments, the reference information is part of the operating information and environmental information. The reference information is information that requires long-term detection. For example, the reference information includes the temperature of the power amplifier module 112, the UWB detection data of the target area, the PIR detection data, etc.

[0111] In some embodiments, the technician manually selects part of the information from the operation information and the environmental information as reference information. For example, the technician manually selects temperature, UWB detection data, and PIR detection data from the temperature, current, voltage, and impedance of the power amplifier module 112, and the light sensing data, UWB detection data, and PIR detection data of the target area as reference information.

[0112] The preset frequency refers to the number of times the reference information is obtained per unit time. In some embodiments, the preset frequency may be 0.02 times / second, 0.005 times / second, etc., which is not limited here.

[0113] In some embodiments, the preset frequency is time-divided, that is, the preset frequency is different in different time periods of each day. For example, the control module 114 determines the preset frequency per hour.

[0114] In some embodiments, the preset frequency is related to the time information, and the flow of people corresponding to the time information is proportional to the preset frequency. For example, when the time information shows that it is a holiday, the flow of people is large, and the preset frequency is set higher. For another example, when the time information shows that it is a meal time, the flow of people is large, and the preset frequency is set higher. For more information about time information, please refer to Figure 3 The corresponding description.

[0115] In some embodiments, the preset frequency is related to the reservation information. The reservation information includes the reservation period and the number of reservations. The number of reservations in the reservation period is proportional to the preset frequency of the reservation period. For example, if the reservation information of a shopping mall is between 1:00 p.m. and 3:00 p.m., and the number of reservations is relatively large, the preset frequency between 1:00 p.m. and 3:00 p.m. is set higher. In some embodiments, the control module 114 retrieves the reservation period input by the user through the user terminal, and counts the number of reservations in each reservation period to determine it as the reservation information, which is not limited here.

[0116] In some embodiments, the control module 114 sets the initial preset frequency based on the time information. For example, the control module 114 determines the initial preset frequency based on the time information through a first preset table. The control module 114 can organize the historical time information and the historical preset frequencies corresponding to the historical time information into a first preset table, and determine the initial preset frequency corresponding to the time information based on the first preset table. The historical preset frequency corresponding to the historical time information can be a preset frequency set by a user.

[0117] In some embodiments, the control module 114 adjusts the initial preset frequency according to the reservation information to determine the preset frequency. For example, the control module 114 adjusts the initial preset frequency according to the frequency determination rule based on the reservation information to determine the preset frequency. Exemplarily, the frequency determination rule includes that the frequency increases by n% for every increase of m people in the number of reservations.

[0118] In some embodiments of the present specification, by adjusting the preset frequency in combination with time information and reservation information, a small amount of information types can be detected at an appropriate detection frequency, thereby further saving energy.

[0119] Step 520: Determine the detection requirement based on the reference information and the current power supply.

[0120] The current power of the power source refers to the actual power of the power source at the current moment. In some embodiments, the current power of the power source can be determined based on the current and voltage actually measured by the current sensor and the voltage sensor in the detection module 113, or determined by other methods, which are not limited here.

[0121] The detection requirement refers to the degree to which all information included in the operation information and the environmental information needs to be detected in order to redetermine the target power supply power. In some embodiments, the detection requirement can be represented by a numerical value, and the higher the numerical value, the greater the detection requirement, the more all information included in the operation information and the environmental information should be detected, and the more the target power supply power should be redetermined. In some embodiments, the detection requirement can also be represented by other methods, which are not limited here.

[0122] In some embodiments, the control module 114 determines the reference power supply power by querying the second preset table based on the reference information. The reference power supply power refers to the power supply power corresponding to the reference information obtained at the current moment. The second preset table may record different reference information and their corresponding reference power supplies. The reference power supply power matching different reference information in the second preset table may be manually set.

[0123] The control module 114 determines the detection requirement based on the reference power and the current power by using formula (1).

[0124] Among them, h is the detection demand, p is the reference power, and q is the current power.

[0125] In some embodiments, the control module 114 determines the detection demand based on the reference information sequence and the current power supply through a demand model, the reference information sequence includes reference information obtained multiple times in succession, and the demand model is a machine learning model.

[0126] A reference information sequence refers to a sequence consisting of reference information obtained multiple times in succession. In some embodiments, the reference information sequence may include a sequence consisting of a preset number of reference information obtained in succession. The preset number may be a number set manually, such as 3, 5, 10, etc. For example, when the preset number is 3, the reference information obtained at a preset frequency includes a, b, c, d, e, f, g in succession, then the reference information sequence is (e, f, g). Where g is the reference information obtained at the current moment, and e and f are two reference information obtained in succession before the current moment, respectively.

[0127] The demand model may be a machine learning model. For example, the demand model may be a NN model, or may be other neural networks or any combination thereof.

[0128] In some embodiments, the input of the demandability model may include a reference information sequence and a current power source, and the output of the demandability model may include a detected demandability.

[0129] In some embodiments, the demand model can be obtained by training multiple fifth training samples with fifth labels. In some embodiments, the fifth training sample includes a historical reference information sequence and a historical power supply power. The fifth label includes the historical reference information sequence and the historical detection demand corresponding to the historical power supply power.

[0130] In some embodiments, the historical reference information sequence and the historical power supply power can be acquired based on historical data. The fifth label is acquired as follows: the control module 114 determines the target power supply power through steps 310-330 based on all the operating information and environmental information corresponding to the last reference information in the historical reference information sequence. The control module 114 determines the historical detection requirement as the fifth label through formula (1) based on the target power supply power and the current power supply power corresponding to the fifth training sample. Among them, the last reference information in the historical reference information sequence refers to the reference information obtained for the last time in the historical reference information sequence obtained in chronological order.

[0131] The training method of the demand model is similar to the training method of the power determination model based on the first training sample, see Figure 3 .

[0132] In some embodiments of the present specification, the detection requirement is determined by a requirement model, which can make the detection requirement more accurate, so that a more appropriate detection frequency can be used to detect a small amount of information types, thereby saving energy.

[0133] Step 530: In response to detecting that the demand degree meets the preset demand condition, obtaining operation information and environment information.

[0134] The preset demand condition refers to a condition for determining whether to redetermine the target power supply power. In some embodiments, the preset demand condition is related to a demand threshold. For example, the preset demand condition may include detecting that the demand is greater than the demand threshold.

[0135] The demand threshold is a threshold used to determine whether the detection demand meets the preset demand conditions. The demand threshold can be set manually and is not limited here. In some embodiments, the demand threshold is related to the reference power supply power. For example, the reference power supply power is inversely proportional to the demand threshold. It can be understood that when the reference power supply power is small and the similarity between the reference power supply power and the current power supply power is high, since the denominator of formula (1) is small, the detection demand calculated by formula (1) may also be large, but at this time there may be no need to redetermine the target power supply power, so the demand threshold can be set larger.

[0136] Since it is a waste of resources to maintain the detection of all operating information and environmental information for a long time, it is possible to only maintain the detection of reference information. In response to the detection requirement meeting the preset requirement conditions, the detection of all operating information and environmental information is started to redetermine the target power.

[0137] Some embodiments of the present specification collect reference information at a preset frequency and only perform long-term detection on part of all operating information and environmental information, thereby avoiding the waste of resources caused by long-term detection of all operating information and environmental information, thereby achieving the purpose of saving energy.

[0138] It should be noted that the above description of process 500 is only for example and explanation, and does not limit the scope of application of this specification. For those skilled in the art, various modifications and changes can be made to process 500 under the guidance of this specification. However, these modifications and changes are still within the scope of this specification.

[0139] One or more embodiments of the present specification provide a power switching device for an audio power amplifier, including a processing device, wherein the processing device is used to execute the power switching method for the audio power amplifier.

[0140] One or more embodiments of the present specification provide a computer-readable storage medium, wherein the storage medium stores computer instructions. When a computer reads the computer instructions in the storage medium, the computer executes the above-mentioned power switching method for the power amplifier audio.

[0141] The beneficial effects that may be brought about by the embodiments of this specification include but are not limited to: (1) By combining multiple information to realize automatic management of power supply, the use of power supply is made more efficient, thereby achieving the purpose of saving energy. (2) By combining time information and planning information to determine the target power supply, the determined target power supply is more in line with the actual playback requirements. (3) By collecting reference information at a preset frequency, only part of all operating information and environmental information is tested for a long time, thereby avoiding the waste of resources caused by long-term testing of all operating information and environmental information, thereby achieving the purpose of saving energy. (4) Image features and sound features are further obtained from image information and sound information, and image features and sound features that reflect the characteristics of the target area can be obtained. While considering the flow of people, image features and sound features are taken into account, so that the determined target power supply is more accurate.

[0142] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

[0143] At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined.

[0144] In addition, unless explicitly stated in the claims, the order of the processing elements and sequences described in this specification, the use of alphanumeric characters, or the use of other names are not intended to limit the order of the processes and methods of this specification. Although the above disclosure discusses some invention embodiments that are currently considered useful through various examples, it should be understood that such details are only for illustrative purposes, and the attached claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the embodiments of this specification. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0145] Similarly, it should be noted that in order to simplify the description disclosed in this specification and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this specification, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the subject matter of this specification are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0146] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of this specification are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0147] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, etc., cited in this specification are hereby incorporated by reference in their entirety. Except for application history documents that are inconsistent with or conflicting with the contents of this specification, documents that limit the broadest scope of the claims of this specification (currently or later attached to this specification) are also excluded. It should be noted that if the descriptions, definitions, and / or use of terms in the materials attached to this specification are inconsistent or conflicting with the contents described in this specification, the descriptions, definitions, and / or use of terms in this specification shall prevail.

[0148] Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, as an example and not a limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly introduced and described in this specification.

Claims

1. A power switching system for an audio power amplifier, characterized in that: The system includes a power module, a power amplifier module, a detection module and a control module; The detection module is configured to collect operation information of the power amplifier module and environmental information of the target area; The control module is configured to determine a target power supply power based on the operation information and the environment information, and control the power supply module based on the target power supply power; The power module is configured to output the target power to the power amplifier module.

2. The system according to claim 1, characterized in that The control module includes a time management module and a decision-making module; The time management module is configured to obtain time information and planning information; The decision module is configured to determine the target power supply based on the operation information, the environment information, the time information and the planning information.

3. The system according to claim 1, characterized in that The detection module is further configured to collect reference information at a preset frequency; The control module is further configured to: Determining the detection requirement based on the reference information and the current power supply power; In response to the detection requirement satisfying a preset requirement condition, the detection module is controlled to collect the operation information and the environment information, and the preset requirement condition is related to a requirement threshold.

4. The system according to claim 1, characterized in that The detection module is further configured to collect image information and sound information of the target area; The control module is further configured to determine the target power based on the operation information, the environment information, the image information, and the sound information.

5. A power switching method for an audio power amplifier, characterized in that: The method is executed by a control module, and includes: Obtaining the operation information of the power amplifier module and the environmental information of the target area; Determining a target power supply based on the operation information and the environment information; Based on the target power supply power, the power supply module is controlled to output the target power supply power to the power amplifier module.

6. The method according to claim 5, characterized in that The determining the target power based on the operation information and the environment information includes: Obtain time and planning information; The target power is determined based on the operation information, the environment information, the time information and the planning information.

7. The method according to claim 5, characterized in that The step of obtaining the operation information of the power amplifier module and the environmental information of the target area includes: Obtain reference information at a preset frequency; Determining the detection requirement based on the reference information and the current power supply power; In response to the detection requirement satisfying a preset requirement condition, the operation information and the environment information are acquired, wherein the preset requirement condition is related to a requirement threshold.

8. The method according to claim 5, characterized in that The determining the target power based on the operation information and the environment information includes: Acquiring image information and sound information of the target area; The target power is determined based on the operation information, the environment information, the image information, and the sound information.

9. A power switching device for an audio power amplifier, comprising a processing device, characterized in that: The processing device is used to execute the power switching method of the power amplifier audio according to any one of claims 5 to 8.

10. A computer-readable storage medium, wherein the storage medium stores computer instructions. When a computer reads the computer instructions in the storage medium, the computer executes the power switching method for an audio power amplifier according to any one of claims 5 to 8.

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