Audio system with array antenna, environment recognition method and storage medium

Abstract

The present invention provides an audio system with an array antenna, an environment recognition method, and a storage medium. When the accommodation device detects that the first wireless audio device and the second wireless audio device are within the accommodation device, it instructs the first wireless audio device to transmit an RSSI test signal with a duration of a preset time and an intensity of a preset transmission intensity through one of the N antennas, and instructs the first wireless audio device to calculate the RSSI intensity received by each of the remaining N - 1 antennas respectively, and instructs the second wireless audio device not to transmit a wireless signal; accumulate each received RSSI intensity to obtain the total received RSSI intensity, calculate the mean value of the RSSI intensity, and calculate the difference between the preset transmission intensity and the mean value of the RSSI intensity to obtain the intensity difference. If the intensity difference is less than the preset threshold, it is determined that the environment where the portable wireless audio system is located is a closed space, otherwise it is determined that the environment where the portable wireless audio system is located is an open space.

Description

Technical Field

[0001] The present invention relates to a portable wireless audio system, and particularly to an audio system with an array antenna, an environment recognition method, and a storage medium. Background Art

[0002] Nowadays, portable wireless audio systems are widely used. For example, Bluetooth wireless earphones (such as true wireless stereo (TWS)). Currently, most wireless communication devices have the ability to obtain RSSI (Received Signal Strength Indicator) to ensure their normal operation. For example, the left earphone and the right earphone in Bluetooth wireless earphones usually detect the RSSI signal strength and automatically complete the connection with the earphone with the strongest RSSI signal strength, thereby improving the production pairing efficiency of Bluetooth earphones.

[0003] Portable wireless audio systems are easily forgotten in enclosed spaces, resulting in users being unable to retrieve them, and even causing other further problems in some cases. For example, during daily use, Bluetooth earphones are often placed in pockets of clothes. If the Bluetooth earphones are not taken out when changing clothes, the clothes containing the Bluetooth earphones and their charging cases are directly put into the washing machine. During the washing process, valuable electronic products are easily damaged by soaking in water. If the washing machine has a drying function, the damage to the electronic products will be aggravated. Patent No. 202110596033.7, a washing machine metal foreign object detection system and method based on the principle of pulsed electromagnetic induction, includes a detection coil arranged outside the dehydration barrel of the washing machine. The pulse emission circuit is electrically connected to the detection coil and sends a pulse signal to the detection coil. The signal processing circuit is electrically connected to the detection coil and receives the induction signal sent by the detection coil. The receiving control circuit is electrically connected to the signal processing circuit and controls whether to receive the induction signal sent by the detection coil. The main control processing circuit is electrically connected to the above pulse emission circuit and sends a pulse emission timing sequence to it. Based on the time-domain pulsed electromagnetic induction principle, the detection coil emits an alternating electromagnetic wave into the washing machine drum under the drive of a periodic pulsed current, which is called the primary field. If there is a metal foreign object in the pocket of the clothes put into the drum, eddy currents will be generated, exciting a secondary field. The secondary field is received by the detection coil and then processed by the detection system to give an alarm, achieving the purpose of detecting metal foreign objects. Since the outer shell material of the Bluetooth earphone charging case is not a metal material, it is not easily detected. When there are metal objects on the clothes, the metal detection method is prone to false alarms. Adding devices such as detection coils, pulse emission circuits, and receiving control circuits inside the washing machine consumes more resource costs.

[0004] In summary, there is no technical solution in the prior art on how to identify that a portable wireless audio system is forgotten in an enclosed space. Summary of the Invention

[0005] Based on the above situation, the main object of the present invention is to provide an audio system with an array antenna, an environment recognition method and a storage medium to recognize the environment where the audio system is located.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] An environment recognition method for an audio system with an array antenna, the audio system being a portable wireless audio system, including a first wireless audio device, a second wireless audio device and a housing device, the housing device being used to house the first wireless audio device and the second wireless audio device, the first wireless audio device having an array antenna, the array antenna including N antennas, where N is a positive integer greater than or equal to 3, and the environment recognition method includes the following steps: The housing device detects whether the first wireless audio device and the second wireless audio device are inside the housing device. If so, then: The housing device instructs the first wireless audio device to transmit an RSSI test signal with a preset duration and a preset transmission intensity through one of the N antennas, and instructs the first wireless audio device to calculate the RSSI intensity received by each of the remaining N - 1 antennas respectively, and instructs the second wireless audio device not to transmit a wireless signal; The first wireless audio device accumulates each received RSSI intensity to obtain a total received RSSI intensity, divides the total received RSSI intensity by N - 1 to obtain an RSSI intensity average value, and calculates the difference between the preset transmission intensity and the RSSI intensity average value to obtain an intensity difference. If the intensity difference is less than a preset threshold, it is determined that the environment where the portable wireless audio system is located is a closed space, otherwise it is determined that the environment where the portable wireless audio system is located is an open space.

[0008] Preferably, if the intensity difference is less than the preset threshold and the first wireless audio device has not been paired with the mobile terminal, the first wireless audio device also sends a pairing request message to the mobile terminal to prompt the user of the mobile terminal.

[0009] Preferably, if the intensity difference is less than the preset threshold and the first wireless audio device has been paired with the mobile terminal, the first wireless audio device also sends a prompt message to the mobile terminal to prompt the user of the mobile terminal.

[0010] Preferably, the housing device is used to house the first wireless audio device in the internal space of the housing device, and the housing of the housing device is made of a non - electromagnetic shielding material.

[0011] Preferably, if the intensity difference is less than a preset threshold, the first wireless audio device emits a prompt tone.

[0012] The present invention also provides an audio system with an array antenna. The audio system is a portable wireless audio system, including a first wireless audio device, a second wireless audio device, and a housing device. The housing device is used to house the first wireless audio device and the second wireless audio device. The first wireless audio device has an array antenna, and the array antenna includes N antennas, where N is a positive integer greater than or equal to 3. The housing device is used to house the first wireless audio device and the second wireless audio device; the housing device detects whether the first wireless audio device and the second wireless audio device are within the housing device. If so, it instructs the first wireless audio device to transmit an RSSI test signal with a preset duration and a preset transmission intensity through one of the N antennas, and instructs the first wireless audio device to calculate the RSSI intensity received by each of the remaining N - 1 antennas respectively, and instructs the second wireless audio device not to transmit a wireless signal; the first wireless audio device accumulates each received RSSI intensity to obtain a total received RSSI intensity, divides the total received RSSI intensity by N - 1 to obtain an RSSI intensity average value, and calculates the difference between the preset transmission intensity and the RSSI intensity average value to obtain an intensity difference. If the intensity difference is less than a preset threshold, it is determined that the environment where the portable wireless audio system is located is an enclosed space, otherwise it is determined that the environment where the portable wireless audio system is located is an open space.

[0013] Preferably, if the intensity difference is less than a preset threshold and the first wireless audio device has not been paired with the mobile terminal, the first wireless audio device sends a pairing request message to the mobile terminal to prompt the user of the mobile terminal.

[0014] Preferably, if the intensity difference is less than a preset threshold and the first wireless audio device has been paired with the mobile terminal, the first wireless audio device sends a prompt message to the mobile terminal to prompt the user of the mobile terminal.

[0015] Preferably, the housing device is used to house the first wireless audio device in the internal space of the housing device, and the housing of the housing device is made of a non - electromagnetic shielding material.

[0016] Preferably, if the intensity difference is less than a preset threshold, the first wireless audio device emits a prompt tone.

[0017] The present invention also provides a computer - readable storage medium, in which a computer program is stored, and the computer program is executed by a processor to perform any one of the environment recognition methods.

[0018]

Beneficial Effects

[0019] In this solution, since the accommodation device only identifies the surrounding environment when it detects that the first wireless audio device and the second wireless audio device are inside the accommodation device, rather than in any situation, it can avoid the large power consumption caused by transmitting and receiving signals required for identification. Additionally, since the received RSSI total intensity is obtained by accumulating the RSSI intensities received through N - 1 antennas of the first wireless audio device, and the RSSI intensity mean is obtained by dividing the received RSSI total intensity by N - 1 and compared with a preset threshold, the accuracy is higher and the environmental identification effect is better.

[0020] Other beneficial effects of the present invention will be elaborated in the specific implementation manner through the introduction of specific technical features and technical solutions. Those skilled in the art should be able to understand the beneficial technical effects brought by the technical features and technical solutions through these introductions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings:

[0022] Figure 1 is a schematic diagram of a portable wireless audio system according to a preferred embodiment of the present invention;

[0023] Figure 2 is Figure 1 a flowchart of an environmental identification method for a portable wireless audio system;

[0024] Figure 3 is Figure 1 a schematic diagram of a portable wireless audio system in a closed space;

[0025] Figure 4 is a schematic diagram of the antenna of a wireless audio device according to an embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of various RSSI intensities of a portable wireless audio system;

[0027] Figure 6 is a schematic diagram of the antenna of a wireless audio device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. In order to avoid obscuring the essence of the present invention, well-known methods, processes, procedures, and components are not described in detail.

[0029] In addition, those of ordinary skill in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0030] Unless the context clearly requires otherwise, the words "including", "comprising" and similar words in the whole specification and claims should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, the meaning of "including but not limited to".

[0031] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0032] Figure 1 FIG. 100 is a schematic diagram of a portable wireless audio system 100 according to an embodiment of the present invention. The portable wireless audio system 100 includes a first wireless audio device 120, a second wireless audio device 130, and a receiving device 110. The receiving device 110 is used to receive the first wireless audio device 120 and the second wireless audio device 130. Both the receiving device 110 and the wireless audio devices have charging contacts. When the wireless audio devices are within the receiving device 110, the receiving device 110 can charge the wireless audio devices through the mutually contacting charging contacts, and communicate with the wireless audio devices through the mutually contacting charging contacts. For example, the receiving device 110 can send relevant instructions to the wireless audio devices through the mutually contacting charging contacts. In one embodiment, the portable wireless audio system 100 can be a Bluetooth headset and a headset case, that is, the first wireless audio device 120 and the second wireless audio device 130 are Bluetooth headsets, the receiving device 110 is a headset case, and BLE communication can be adopted between the first wireless audio device 120 and the second wireless audio device 130. The receiving device 110 can be open. After the first wireless audio device 120 and the second wireless audio device 130 are received in the receiving device 110, they can be exposed outside the receiving device 110, and the wireless signals emitted by both will not be shielded inside the receiving device 110, that is, they can leave the receiving device 110 and reach the outside of the receiving device 110. In this case, the housing of the receiving device 110 can be made of non-electromagnetic shielding materials (such as plastics, woods, etc.) or electromagnetic shielding materials (such as metals, etc.). The receiving device 110 can also be closed, and the receiving device 110 is made of non-electromagnetic shielding materials (such as plastics, woods, etc.). After the first wireless audio device 120 and the second wireless audio device 130 are received in the receiving device 110, they are in the internal space of the receiving device 110, and the wireless signals emitted by both will not be shielded inside the receiving device 110, that is, they can pass through the housing of the receiving device 110 and reach the outside of the receiving device 110.

[0033] As Figure 4 and Figure 6 shown, both the first wireless audio device 120 and the second wireless audio device 130 have array antennas. The array antenna includes N antennas 121, where N is a positive integer greater than or equal to 3. For example, N can be 3, 4, or 5. Any one of the N antennas of each wireless audio device can be used as a transmitting antenna or a receiving antenna. Correspondingly, the wireless transceiver chips of the first wireless audio device 120 and the second wireless audio device 130 have N ports, and each port is respectively connected to one of the antennas in the array antenna, so that data can be independently received and transmitted for each antenna simultaneously.

[0034] Figure 2 is a flowchart of an environment recognition method for the above portable wireless audio system 100, including the following steps:

[0035] S100, the accommodating device 110 detects whether the first wireless audio device 120 and the second audio device are within the accommodating device 110. If so, steps S110 to S120 are executed; if not, step S130 can be executed.

[0036] This step can be implemented using existing technologies. For example, a Hall sensor can be set in the accommodating device 110, and the accommodating device 110 can identify whether the first wireless audio device 120 and the second wireless audio device 130 are placed into or removed from the accommodating device 110 through the Hall sensor.

[0037] S110, the accommodating device 110 instructs the first wireless audio device 120 to transmit an RSSI test signal with a preset duration and a preset transmission intensity through one of the N antennas, and instructs the first wireless audio device 120 to calculate the RSSI intensity received by each of the remaining N - 1 antennas respectively, and instructs the second wireless audio device 130 not to transmit wireless signals.

[0038] The accommodating device 110 sends an instruction to the first wireless audio device 120 through a pair of charging contacts in contact with each other, to instruct the first wireless audio device 120 to transmit an RSSI test signal with a duration of a preset time period (such as 1S, 2S, etc.) and an intensity of a preset transmission intensity (such as -10dbm) through one of the N antennas (referred to as the transmitting antenna). The RSSI test signal will reach each of the remaining N - 1 antennas (referred to as the receiving antennas) of the first wireless audio device 120 along multiple paths, and the multiple paths include: a path directly from the transmitting antenna to the receiving antenna, i.e., the direct path, and a path from the transmitting antenna to the receiving antenna after being reflected by other objects, i.e., the reflected path. Usually, there are multiple reflected paths. The RSSI signal intensity of the signal on the direct path (i.e., the direct signal) received by each antenna, and the sum of the RSSI signal intensities of the signals on all the reflected paths (i.e., the reflected signals) is the RSSI intensity received by each antenna. Specifically, the channel impulse response of the channel state information formed by obtaining the RSSI test signal can be calculated to obtain the signal energy amplitudes corresponding to multiple different moments, i.e., the line-of-sight wireless transmission signal diagram regarding time and energy. The maximum signal energy amplitude is selected from the line-of-sight wireless transmission signal diagram regarding time and energy as the RSSI signal intensity of the signal on the direct path (i.e., the direct signal), and the sum of the remaining energy amplitudes is used as the RSSI signal intensity of the signals on all the reflected paths (i.e., the reflected signals). It can be seen that the first wireless audio device 120 can calculate the RSSI intensity received by each receiving antenna. In addition, the accommodating device 110 sends an instruction to the second wireless audio device 130 through a pair of charging contacts in contact with each other, to instruct the second wireless audio device 130 not to transmit a wireless signal, so as to avoid the increase in the RSSI intensity received by the N - 1 receiving antennas of the first wireless audio device 120 due to the transmission of the wireless signal by the second wireless audio device 130. Figure 5 In an embodiment, it is a schematic diagram of the relationship between the RSSI signal intensity of the direct signal (direct RSSI intensity) and the RSSI signal intensity of the reflected signal (reflected RSSI intensity) received by the N - 1 receiving antennas when one transmitting antenna of the first wireless audio device 120 transmits an RSSI test signal.

[0039] S120, the first wireless audio device 120 accumulates the RSSI intensity received by each receiving antenna to obtain the total received RSSI intensity, divides the total received RSSI intensity by N - 1 to obtain the average RSSI intensity, and calculates the difference between the preset transmission intensity and the average RSSI intensity to obtain the intensity difference. If the intensity difference is less than the preset threshold, it is determined that the environment where the portable wireless audio system is located is an enclosed space; otherwise, it is determined that the environment where the portable wireless audio system is located is an open space.

[0040] When the portable wireless audio system 100 is inside the enclosed space 200, due to the reflection of the RSSI test signal by the enclosed space 200, the RSSI intensity received by each receiving antenna is relatively large, and the average value of the RSSI intensities of all receiving antennas is also relatively large. As a result, the difference between the preset transmission intensity and the average value of the RSSI intensities (i.e., the intensity difference) is smaller. Conversely, if the portable wireless audio system 100 is in an open space, the RSSI intensity received by each receiving antenna is smaller, and the average value of the RSSI intensities of all receiving antennas is also smaller. Then, the difference between the preset transmission intensity and the average value of the RSSI intensities (i.e., the intensity difference) is larger. Therefore, based on the magnitude relationship between the intensity difference and the preset threshold, the environment where the portable wireless audio system 100 is located can be determined. If the intensity difference is less than the preset threshold, it is determined that the environment where the portable wireless audio system 100 is located is the enclosed space 200 (such as inside the drum of a washing machine). Otherwise, it is determined that the environment where the portable wireless audio system 100 is located is an open space (such as on a table). In some embodiments, the preset threshold can be -5 dbm, etc. As Figure 3 shown, it is a schematic diagram of the portable wireless audio system 100 being inside the enclosed space 200. The specific calculation method of the above-mentioned intensity difference is as follows: The first wireless audio device 120 accumulates the RSSI intensity received by each one, obtains the total received RSSI intensity, divides the total received RSSI intensity by N to obtain the average value of the RSSI intensity, and calculates the difference between the preset transmission intensity and the average value of the RSSI intensity to obtain the intensity difference.

[0041] When it is determined that the environment where the portable wireless audio system 100 is located is the enclosed space 200, the user can be prompted in various ways to prevent the user from forgetting the portable wireless audio system 100 in this enclosed space 200 (such as inside the drum of a washing machine).

[0042] In one embodiment, if the intensity difference is less than the preset threshold (i.e., the portable wireless audio system 100 is in the enclosed space 200) and the first wireless audio device 120 has not been paired with the mobile terminal 300, the first wireless audio device 120 also sends a pairing request message to the mobile terminal 300 to prompt the user of the mobile terminal 300. In this embodiment, even if the first wireless audio device 120 is not paired with the mobile terminal 300, the user of the mobile terminal 300 can still be prompted through the pairing request message to prevent the user from forgetting the portable wireless audio system 100 in this enclosed space 200.

[0043] In another embodiment, if the intensity difference is less than a preset threshold (i.e., the portable wireless audio system 100 is in a closed space 200), and the first wireless audio device 120 has been paired with the mobile terminal 300, the first wireless audio device 120 further sends a prompt message to the mobile terminal 300. In this embodiment, the user can be prompted through the first wireless audio device 120 that has been paired with the mobile terminal 300 to prevent the user from leaving the portable wireless audio system 100 in the closed space 200.

[0044] In another embodiment, if the intensity difference is less than a preset threshold, the first wireless audio device 120 emits a prompt tone to prevent the user from leaving the portable wireless audio system 100 in the closed space 200.

[0045] S130, after a preset duration, step S100 is executed again. In this embodiment, within the preset duration after determining that the portable wireless system is in an open space, the continuous identification of the environment is paused to save the power of the portable wireless audio system 100. After this preset duration, step S100 is executed again, that is, the continuous identification of the environment is continued. It can be seen that this embodiment takes into account both energy consumption and the timeliness of identifying the environment.

[0046] In addition, the present invention further provides an audio system 100 with an array antenna. The audio system is a portable wireless audio system, including a first wireless audio device 120, a second wireless audio device 130, and a housing device 110. The housing device 110 is used to house the first wireless audio device 120 and the second wireless audio device 130. The first wireless audio device 120 has an array antenna, and the array antenna includes N antennas, where N is a positive integer greater than or equal to 3. The housing device 110 is used to house the first wireless audio device 120 and the second wireless audio device 130; the housing device 110 detects whether the first wireless audio device 120 and the second wireless audio device 130 are within the housing device 110. If so, it instructs the first wireless audio device 120 to transmit an RSSI test signal with a preset duration and a preset transmission intensity through one of the N antennas, and instructs the first wireless audio device 120 to calculate the RSSI intensity received by each of the remaining N - 1 antennas respectively, and instructs the second wireless audio device 130 not to transmit a wireless signal; the first wireless audio device 120 accumulates each received RSSI intensity to obtain a total received RSSI intensity, divides the total received RSSI intensity by N - 1 to obtain an RSSI intensity average value, and calculates the difference between the preset transmission intensity and the RSSI intensity average value to obtain an intensity difference. If the intensity difference is less than a preset threshold, it is determined that the environment where the portable wireless audio system is located is a closed space, otherwise it is determined that the environment where the portable wireless audio system is located is an open space.

[0047] The present invention also provides a computer-readable storage medium for an environmental recognition method, such as a chip, an optical disc, etc. A computer program is stored on the computer-readable storage medium, and when the computer program is executed, the environmental recognition method described in any of the above is implemented.

[0048] It should be noted that the computer-readable storage medium described in the embodiments of the present disclosure is not limited to the above-given embodiments. For example, it can also be an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the embodiments of the present disclosure, the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.

[0049] Those skilled in the art can understand that, on the premise of no conflict, the above preferred solutions can be freely combined and superimposed. Among them, the flowcharts and block diagrams in the drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and this module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order from that marked in the drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions. The numbers assigned to the steps in this article are only for convenience of description and reference, and are not used to limit the order before and after. The specific execution order is determined by the technology itself, and those skilled in the art can determine various permitted and reasonable orders according to the technology itself.

[0050] It should be noted that in the present invention, step numbers (letter or number) are used to refer to certain specific method steps only for the purpose of convenient and concise description, rather than to limit the order of these method steps by letters or numbers. Those skilled in the art can understand that the order of relevant method steps should be determined by the technology itself and should not be unduly restricted by the existence of step numbers. Those skilled in the art can determine various permitted and reasonable step orders according to the technology itself.

[0051] Those skilled in the art can understand that on the premise of no conflict, the above preferred solutions can be freely combined and superimposed.

[0052] It should be understood that the above embodiments are merely exemplary rather than restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions that those skilled in the art can make to the above details will be included within the scope of the claims of the present invention.

Claims

1. An environmental recognition method for an audio system with an array antenna, where the audio system is a portable wireless audio system, including a first wireless audio device, a second wireless audio device, and a housing device for housing the first wireless audio device and the second wireless audio device. Characterized in that, The first wireless audio device has an array antenna, and the array antenna includes N antennas, where N is a positive integer greater than or equal to 3. The environmental recognition method includes the following steps: The housing device detects whether the first wireless audio device and the second wireless audio device are within the housing device. If so, then: The housing device instructs the first wireless audio device to transmit an RSSI test signal with a preset duration and a preset transmission intensity through one of the N antennas, and instructs the first wireless audio device to calculate the RSSI intensity received by each of the remaining N - 1 antennas respectively, and instructs the second wireless audio device not to transmit a wireless signal; The first wireless audio device accumulates each received RSSI intensity to obtain a total received RSSI intensity, divides the total received RSSI intensity by N - 1 to obtain an RSSI intensity average value, and calculates the difference between the preset transmission intensity and the RSSI intensity average value to obtain an intensity difference. If the intensity difference is less than a preset threshold, it is determined that the environment where the portable wireless audio system is located is a closed space; otherwise, it is determined that the environment where the portable wireless audio system is located is an open space.

2. The environmental recognition method according to claim 1, Characterized in that, If the intensity difference is less than the preset threshold and the first wireless audio device has not been paired with the mobile terminal, the first wireless audio device also sends a pairing request message to the mobile terminal to prompt the user of the mobile terminal.

3. The environmental recognition method according to claim 1, Characterized in that, If the intensity difference is less than the preset threshold and the first wireless audio device has been paired with the mobile terminal, the first wireless audio device also sends a prompt message to the mobile terminal to prompt the user of the mobile terminal.

4. The environmental recognition method according to claim 1, Characterized in that, The housing device is used to house the first wireless audio device in the internal space of the housing device, and the housing of the housing device is made of a non - electromagnetic shielding material.

5. The environmental recognition method according to claim 1, Characterized in that, If the intensity difference is less than the preset threshold, the first wireless audio device emits a prompt tone.

6. An audio system with an array antenna, where the audio system is a portable wireless audio system, including a first wireless audio device, a second wireless audio device, and a housing device for housing the first wireless audio device and the second wireless audio device. Characterized in that, The first wireless audio device has an array antenna, and the array antenna includes N antennas, where N is a positive integer greater than or equal to 3. The housing device is used to house the first wireless audio device and the second wireless audio device; The accommodating device detects whether the first wireless audio device and the second wireless audio device are within the accommodating device. If so, it instructs the first wireless audio device to transmit an RSSI test signal with a duration of a preset time and an intensity of a preset transmission intensity through one of the N antennas, and instructs the first wireless audio device to calculate the RSSI intensity received by each of the remaining N - 1 antennas respectively, and instructs the second wireless audio device not to transmit wireless signals; The first wireless audio device accumulates each received RSSI intensity to obtain a total received RSSI intensity, divides the total received RSSI intensity by N - 1 to obtain an RSSI intensity average value, and calculates the difference between the preset transmission intensity and the RSSI intensity average value to obtain an intensity difference. If the intensity difference is less than a preset threshold, it is determined that the environment where the portable wireless audio system is located is a closed space; otherwise, it is determined that the environment where the portable wireless audio system is located is an open space.

7. The audio system according to claim 6, wherein, if the intensity difference is less than the preset threshold and the first wireless audio device has not been paired with the mobile terminal, the first wireless audio device sends a pairing request message to the mobile terminal to prompt the user of the mobile terminal.

8. The audio system according to claim 6, wherein, if the intensity difference is less than the preset threshold and the first wireless audio device has been paired with the mobile terminal, the first wireless audio device sends a prompt message to the mobile terminal to prompt the user of the mobile terminal.

9. The audio system according to claim 6, wherein, the accommodating device is used to accommodate the first wireless audio device in the internal space of the accommodating device, and the outer shell of the accommodating device is made of a non - electromagnetic shielding material.

10. The audio system according to claim 6, wherein, if the intensity difference is less than the preset threshold, the first wireless audio device emits a prompt tone.

11. A computer - readable storage medium, in which a computer program is stored, wherein, the computer program is executed by a processor to perform the environment recognition method according to any one of claims 1 - 5.

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