Intercom and intercom system

Abstract

The application discloses a speakerphone and a speakerphone system. The speakerphone comprises a master processor, a short-distance communication module, a remote communication module and an audio processing module connected with the master processor. The short-distance communication module is used for joining or establishing a communication group in a local range under the control of the master processor to receive or send audio information. The remote communication module is used for establishing a remote communication connection with an external device under the control of the master processor to receive or send audio information. The audio processing module is used for processing received audio information into left-channel audio data and right-channel audio data and playing control of the left-channel audio data and / or the right-channel audio data. The master processor is used for switching control of the short-distance communication module and the remote communication module and outputting audio information received through the short-distance communication module or the remote communication module to the audio processing module. The speakerphone can improve the user experience.

Description

Technical Field

[0001] This application relates to the field of walkie-talkie technology, and in particular to a walkie-talkie and walkie-talkie system. Background Technology

[0002] Traditional walkie-talkies (such as devices based on the VHF / UHF frequency band) are widely used in short-range voice communication and have the advantages of being easy to operate, having good real-time performance, and not relying on external networks.

[0003] In conceiving and implementing this application, the inventors discovered at least the following problem: how to enhance the functionality of a walkie-talkie to improve the user experience on the basis of having short-range communication capabilities is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this application is to provide a walkie-talkie and a walkie-talkie system, wherein the walkie-talkie, in addition to having short-range communication capabilities, also has long-range communication capabilities and stereo sound playback capabilities, thereby enhancing the user experience.

[0005] To achieve the above objectives: In a first aspect, embodiments of this application provide a walkie-talkie, including a main control processor, a short-range communication module, a long-range communication module, and an audio processing module connected to the main control processor; the short-range communication module is used, under the control of the main control processor, to join or form a communication group within a local area to receive audio information from external devices in the communication group, or to send audio information to external devices; the long-range communication module is used, under the control of the main control processor, to establish a long-range communication connection with external devices to receive audio information from external devices, or to send audio information to external devices; the audio processing module is used to process the received audio information into left channel audio data and right channel audio data, and to control the playback of the left channel audio data and / or right channel audio data; the main control processor is used to switch between the short-range communication module and the long-range communication module, and to output the audio information received through the short-range communication module or the long-range communication module to the audio processing module.

[0006] In one embodiment, the short-range communication module is a Bluetooth communication module, and the long-range communication module is a cellular network communication module.

[0007] In one embodiment, the external device includes other walkie-talkies and / or other electronic devices configured with walkie-talkie functionality.

[0008] In one embodiment, the near-field communication module and the long-range communication module are connected to the main control processor via independent lines. When the main control processor detects that the near-field communication module has malfunctioned or that the signal strength of the communication signal of the near-field communication module is lower than a preset strength value that represents a weak signal state, it disconnects the line connected to the near-field communication module and connects the line connected to the long-range communication module, so as to receive audio information from external devices or send audio information to external devices through the long-range communication module.

[0009] In one embodiment, the main control processor includes a channel switching module, and both the near-field communication module and the long-range communication module are connected to the channel switching module. When the channel switching module detects that the signal strength of the communication signal of the near-field communication module is lower than a preset strength value representing a weak signal state or that the near-field communication module has malfunctioned, it activates the long-range communication module.

[0010] In one embodiment, the audio processing module includes a first speaker and a second speaker, for playing left channel audio data and / or right channel audio data through the first speaker and the second speaker, respectively.

[0011] In one embodiment, when the main control processor detects the presence of an external device within a preset distance, the audio processing module plays only one of the left channel audio data and the right channel audio data through its own speaker, and the other of the left channel audio data and the right channel audio data played synchronously with the external device forms a spatial reverberation effect.

[0012] In one embodiment, the walkie-talkie also includes a team management module connected to the main control processor. The team management module supports the management and control of multiple communication groups and supports private chat control with at least one external device in the communication group.

[0013] In one embodiment, the walkie-talkie also includes a human-machine interface module connected to the main control processor, the human-machine interface module supporting display control and human-machine interaction control.

[0014] In one embodiment, the walkie-talkie also includes a power management module connected to the main control processor, the power management module supporting charging control and power management.

[0015] In one embodiment, the human-computer interaction module includes at least one of the following: Display screen; Physical buttons; Physical knob; Voice command recognition device; Remote management module.

[0016] In one embodiment, the power management module includes a charging control circuit and a power supply battery. The charging control circuit includes a charging control chip and a switching transistor. The charging control chip includes a charging access pin, a charging output pin, a battery detection pin, and a signal output pin. The charging access pin of the charging control chip is connected to a charging interface. The charging output pin of the charging control chip is connected to the power supply battery through the path terminal of the switching transistor. The control terminal of the switching transistor is connected to a main control processor, which controls its conduction or deactivation to support the charging control circuit in starting or ending charging. The battery detection pin of the charging control chip is connected to the path terminal of the switching transistor to detect the electrical signal corresponding to the power supply battery. The signal output pin of the charging control chip is connected to the main control processor to determine the charging feedback signal based on the electrical signal and output the charging feedback signal to the main control processor, so that the main control processor controls the switching transistor to turn off when it determines that the battery is fully charged based on the charging feedback signal.

[0017] In one embodiment, the charging interface also includes a fast charging chip.

[0018] In one embodiment, the charging control chip is model SGM41524.

[0019] Secondly, embodiments of this application provide an intercom system, including at least two intercoms as described in any of the preceding claims; the at least two intercoms establish a short-range communication connection between themselves through their respective short-range communication modules to form a communication group; the intercoms are used to receive audio information sent by other intercoms in the communication group through their own short-range communication modules or long-range communication modules, and to perform audio processing and playback control through their own audio processing modules, or to send audio information to other intercoms in the communication group through their own short-range communication modules or long-range communication modules.

[0020] In this application's technical solution, the walkie-talkie integrates a short-range communication module, a long-range communication module, and an audio processing module through a main control processor. The short-range communication module enables short-range communication, allowing for the formation or joining of communication groups and the transmission and reception of audio within a local area. The long-range communication module enables long-range communication, switching between short-range and long-range communication functions based on the main control processor to meet communication needs at various distances. Furthermore, the audio processing module processes the received audio information into left and right channel audio data for stereo audio playback. Therefore, this application's technical solution provides a walkie-talkie that, in addition to short-range communication, also features long-range communication and stereo sound playback, thus enhancing the user experience. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the structural framework of the walkie-talkie provided in the first embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the structural framework of the walkie-talkie provided in the second embodiment of this application.

[0024] Figure 3 This is a rendering of the appearance of the walkie-talkie in this application example.

[0025] Figure 4 This is a circuit diagram of the charging control circuit exemplified in this application.

[0026] Figure 5 This is a schematic diagram illustrating the effect of communication between communication groups based on a Bluetooth Mesh network, as shown in the example of this application.

[0027] Figure 6 This is a simulation diagram of the spatial reverberation effect created by two walkie-talkies in this application example.

[0028] Figure 7 This is a schematic diagram illustrating the functions and configuration of the walkie-talkie in this application example.

[0029] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0031] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0032] It should be understood that the terms "comprising" or "including" indicate the presence of the stated feature, step, operation, element, component, item, type, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or" and "and / or" as used herein are to be interpreted as inclusive, or mean any one or any combination thereof. Therefore, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C." Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0033] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0034] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0035] First Embodiment Figure 1 This is a schematic diagram of the structural frame of the walkie-talkie provided in the first embodiment of this application. See also... Figure 1 This embodiment provides a walkie-talkie 100, including: a main control processor 101, a short-range communication module 102 connected to the main control processor 101, a long-range communication module 103, and an audio processing module 104.

[0036] The short-range communication module 102 is controlled by the main control processor 101 to join or form a communication group within a local area, so as to receive audio information from the external device 200 in the communication group, or send audio information to the external device 200.

[0037] The remote communication module 103 is controlled by the main control processor 101 to establish a remote communication connection with the external device 200, so as to receive audio information from the external device 200 or send audio information to the external device 200.

[0038] The audio processing module 104 is used to process the received audio information into left channel audio data and right channel audio data, and to control the playback of the left channel audio data and / or right channel audio data.

[0039] The main control processor 101 is used to switch between the short-range communication module 102 and the long-range communication module 103, and to output the audio information received through the short-range communication module 102 or the long-range communication module 103 to the audio processing module 104.

[0040] In one embodiment, the local range can be characterized as any range defined for short-range communication. Optionally, the local range may be, for example, the coverage area of ​​Bluetooth communication technology, the coverage area of ​​WiFi communication technology, etc.

[0041] In one embodiment, the short-range communication module 102 can represent a functional module built using the working principle of short-range communication technology, which can realize short-range communication functions. Optionally, the short-range communication module 102 can be built using the working principle of various short-range communication technologies, thereby realizing various short-range communication functions. Among them, short-range communication technologies include, for example, Bluetooth communication technology, WiFi communication technology, etc.

[0042] In one embodiment, the short-range communication technology can be a Bluetooth communication module built using the working principle of Bluetooth communication technology. Preferably, the short-range communication technology can be a Bluetooth Low Energy module built using the working principle of Bluetooth Low Energy communication technology.

[0043] In one embodiment, the external device 200 includes, but is not limited to, other walkie-talkies and / or other electronic devices configured with walkie-talkie functionality.

[0044] In one embodiment, the communication group includes the walkie-talkie 100 and external devices 200 (e.g., others). Optionally, the walkie-talkie 100 and the external devices 200, as well as the external devices 200, are all included in a group communication network constructed using communication technology.

[0045] In one embodiment, the remote communication module 103 can represent a functional module built using the working principle of remote communication technology, which can realize remote communication functions. Optionally, the remote communication module 103 can be built using the working principle of various remote communication technologies, thereby realizing various remote communication functions. Among them, remote communication technologies include cellular network communication technology, satellite communication technology, microwave communication technology, etc.

[0046] In one embodiment, the remote communication module 103 can be a cellular network communication module built using the working principle of cellular network communication technology.

[0047] In one embodiment, the audio processing module 104 may further include an audio acquisition unit for acquiring audio information around the walkie-talkie.

[0048] In one embodiment, the audio processing module 104 may include a first speaker and a second speaker for playing left channel audio data and / or right channel audio data through the first speaker and the second speaker, respectively.

[0049] In another embodiment, the audio processing module 104 includes at least one speaker. The audio processing module 104 is configured to, when the main control processor 101 detects the presence of an external device 200 within a preset distance, play only one of the left channel audio data and the right channel audio data through its own speaker, and the other of the left channel audio data and the right channel audio data played synchronously with the external device 200 forms a spatial reverberation effect. For example, when the main control processor 101 detects the presence of an external device 200 within a preset distance, and the external device 200 is located in the left area of ​​the walkie-talkie 100, the control audio processing module 104 plays the right channel audio data only through its own speaker, and the left channel audio data played synchronously with the external device 200 forms a spatial reverberation effect; as another example, when the main control processor 101 detects the presence of an external device 200 within a preset distance through the near-field communication module 102, and the external device 200 is located in the right area of ​​the walkie-talkie 100, the control audio processing module 104 plays the left channel audio data only through its own speaker, and the right channel audio data played synchronously with the external device 200 forms a spatial reverberation effect.

[0050] In one embodiment, the audio processing module 104 is used to process the received audio information into left channel audio data and right channel audio data; the main control processor 101 is also used to send the left channel audio data and right channel audio data obtained by the audio processing module 104 to the two external devices 200 respectively through the near-field communication module 102 when the two external devices 200 are detected to be at a preset distance, so that the two external devices 200 play synchronously and form a spatial reverberation sound effect.

[0051] In one embodiment, the near-field communication module 102 and the long-range communication module 103 are respectively connected to the main control processor 101 via independent lines. When the main control processor 101 detects that the near-field communication module 102 has malfunctioned or that the signal strength of the communication signal of the near-field communication module 102 is lower than a preset strength value that represents a weak signal state, it disconnects the line connected to the near-field communication module 102 and connects the line connected to the long-range communication module 103, so as to receive audio information from external devices or send audio information to external devices through the long-range communication module 103.

[0052] For example, the main control processor 101 is further configured to activate the remote communication module 103 when the signal strength of the communication signal between the short-range communication module 102 and at least one external device 200 in the communication group is lower than a preset strength value that characterizes a weak signal state, so that the remote communication module 103 establishes a remote communication connection with the aforementioned at least one external device 200 to receive audio information from the external device 200 or send audio information to the external device 200.

[0053] For example, the main control processor 101 is also used to activate the remote communication module 103 when the short-range communication module 102 fails (e.g., the short-range communication link is unavailable), so that the remote communication module 103 establishes a remote communication connection with all external devices 200 in the communication group to receive audio information from the external devices 200 or send audio information to the external devices 200.

[0054] In one embodiment, the main control processor 101 includes a channel switching module; both the near-field communication module and the long-range communication module are connected to the channel switching module. When the channel switching module detects that the signal strength of the communication signal of the near-field communication module 102 is lower than a preset strength value representing a weak signal state or that the near-field communication module 102 has malfunctioned, it activates the long-range communication module 103.

[0055] The walkie-talkie 100 provided in this embodiment includes a main control processor 101, a short-range communication module 102, a long-range communication module 103, and an audio processing module 104 connected to the main control processor 101. The short-range communication module 102 is controlled by the main control processor 101 to join or form a communication group within a local area to receive audio information from external devices 200 in the communication group or to send audio information to external devices 200. The long-range communication module 103 is controlled by the main control processor 101 to establish a long-range communication with external devices 200. The system has a communication connection to receive audio information from external device 200 or to send audio information to external device 200; the audio processing module 104 is used to process the received audio information into left channel audio data and right channel audio data, and to control the playback of the left channel audio data and / or right channel audio data; the main control processor 101 is used to switch between the near-field communication module 102 and the remote communication module 103, and to output the audio information received through the near-field communication module 102 or the remote communication module 103 to the audio processing module 104. Based on the technical solution of this embodiment, the walkie-talkie integrates a short-range communication module 102, a long-range communication module 103, and an audio processing module 104 through the main control processor 101. The short-range communication module 102 enables short-range communication, allowing for the formation or joining of communication groups and the transmission and reception of audio within a local area. The long-range communication module 103 enables long-range communication, allowing switching between short-range and long-range communication functions based on the control of the main control processor 101 to meet communication needs at various distances. Furthermore, the audio processing module 104 processes the received audio information into left and right channel audio data to facilitate stereo audio playback. Therefore, in this embodiment, the walkie-talkie 100, in addition to short-range communication, also possesses long-range communication and stereo sound playback capabilities, thereby enhancing the user experience.

[0056] Second Embodiment Figure 2 This is a schematic diagram of the structural frame of the walkie-talkie provided in the second embodiment of this application. See also... Figure 2 The walkie-talkie 100 provided in this embodiment differs from the walkie-talkie provided in the first embodiment in that the walkie-talkie 100 provided in this embodiment may further include at least one of a team management module 105, a human-computer interaction module 106, and a power management module 107. In addition, the short-range communication module 102 is a low-power Bluetooth module 102', and the long-range communication module 103 is a cellular network communication module 103'.

[0057] In one embodiment, the team management module 105 is connected to the main control processor 101 to support the management and control of multiple communication groups and to support private chat control with at least one external device (such as another walkie-talkie 200') in the communication group.

[0058] In one embodiment, the management and control of multiple communication groups can enable the coexistence of multiple communication groups (temporary storage or permanent storage), and the dynamic addition or removal of members from specific communication groups. Optionally, the team management module 105 uses a temporary team mode when temporarily storing communication groups, and a persistent team mode when permanently storing communication groups. Temporarily stored communication groups can be automatically disbanded after the task ends.

[0059] In one embodiment, the team management module 105 supports switching between broadcast call mode and private chat communication mode for a specific communication group. After switching to private chat communication mode, the team management module 105 can perform private chat control with at least one external device in the communication group.

[0060] In one embodiment, the team management module 105 can register the identity information of multiple communication groups (e.g., no less than 4 communication groups) when multiple communication groups coexist, and can quickly switch to a specific communication group.

[0061] In one implementation, intra-group communication supports priority broadcasting, with the priority order being: group administrator, high-privilege members, and ordinary members.

[0062] In the technical solution of this embodiment, the team management module 105 in the walkie-talkie enables parallel communication of multiple communication groups, dynamic addition / exit of members for specific communication groups, flexible switching between broadcast call mode and private chat mode, and administrator permission control and team permission management for specific communication groups. This achieves flexible team communication capabilities and team mechanism, thereby simplifying the formation and maintenance of communication groups and improving the efficiency and collaborative combat capabilities of using walkie-talkies to perform tasks.

[0063] In addition, the team management module 105 in the walkie-talkie can realize a flexible and efficient team communication mechanism, which mainly includes: (1) Bluetooth Mesh Teaming: Based on the Bluetooth Mesh network protocol (Bluetooth version 5.0 or higher), walkie-talkies and external devices (such as other walkie-talkies 200') can be added to the Mesh group as a node. Optionally, a maximum of 128 devices can be dynamically networked.

[0064] (2) Role division: There are administrator nodes (captain) and ordinary member nodes in the team. The administrator can manage the team (add / kick people, assign permissions).

[0065] (3) Multi-channel management: The system supports the simultaneous existence of multiple groups, each group is set with an independent communication channel, and the groups do not interfere with each other.

[0066] (4) Flexible switching between broadcast call mode and private chat mode: Users can broadcast messages within the group or choose to chat privately with specific group members, ensuring communication flexibility and privacy.

[0067] (5) Quick switching mechanism: Quickly switch between the current active group, broadcast channel or private chat object through physical shortcut keys or voice commands.

[0068] In the technical solution of this embodiment, the walkie-talkie is equipped with a team management module 105, which can greatly improve the efficiency of multi-person collaborative communication and adapt to the dynamic and changing needs of team collaboration, such as search and rescue, construction operations, expedition team grouping and other application scenarios.

[0069] In one embodiment, the team management module 105 can be configured with a team management system that supports the following functions: (1) Unique device ID; (2) Management of team request, authentication, and channel allocation processes; (3) Control over switching between group broadcast and point-to-point private chat; (4) Supports dynamic member management (add, remove, kick out, mute).

[0070] In one embodiment, the group management module 105 can cooperate with the Bluetooth Low Energy module 102' to build a Bluetooth Mesh network. Specifically, after pairing is completed, each device automatically joins the Bluetooth Mesh network, and intra-group communication within the communication group adopts the following mechanism: (1) Groupcast: Sending broadcast messages between devices in the same group via a group address; (2) Unicast: Specifies the target device ID for point-to-point communication; (3) Group control (Configuration Server): The group administrator node is responsible for managing group members, channel allocation, permission settings and other operations.

[0071] In one embodiment, the detailed team communication mechanism of the team management module 105 may include: (1) Team mode types (supports two main team communication modes): Ad-hoc Grouping: suitable for temporarily forming a group, which will be automatically disbanded after the task is completed; Persistent Grouping: Equipment remembers group relationships, suitable for long-term work teams, such as construction teams and rescue teams.

[0072] (2) Team communication process: 1. The team leader device starts the "team broadcast" mode and sends a team request; 2. Nearby devices scan the broadcast and send a "join request"; 3. The team leader device verifies the device identity (through device ID and authentication information); 4. After confirming joining, the device is assigned a unique communication number within the group (such as GID_001, GID_002); 5. Broadcast channels and private chat channels are established within the group.

[0073] In the broadcast call mode corresponding to the broadcast channel: all group members listen to the group leader's speech in real time; the right to speak is controlled by a preemption mechanism to prevent multiple people from speaking at the same time and causing conflicts; the speaking priority is usually: administrator devices > ordinary devices.

[0074] In the private chat communication mode corresponding to the private chat channel: select the target device for private chat by switching commands; other group members cannot listen during private chat.

[0075] (3) Multiple groups coexist and group switching: Supports up to 16 groups coexisting; the device can be pre-configured with multiple group identities and switch active groups in real time; the switching method is through physical knobs, shortcut keys or voice commands. For example, the fire scene can be divided into "Operation Group 1", "Operation Group 2" and "Logistics Support Group". Members can switch to different groups with one click according to their functions to achieve clear division of tasks.

[0076] In one embodiment, the human-computer interaction module 106 is connected to the main control processor 101 and is used to support display control and human-computer interaction control.

[0077] In one embodiment, the human-computer interaction module 106 includes at least one of the following: Display screen; Physical buttons; Physical knob; Indicator lights; Voice command recognition device; Remote management module.

[0078] In one embodiment, the display screen can be an OLED screen.

[0079] In one embodiment, the content displayed on the screen may include at least one of the following: communication group information, communication status, battery level, communication signal strength, time, volume, communication mode, and group scanning status. For example, see... Figure 3 The display shows indicators such as SCAN (team scan status), Bluetooth connection (a type of communication status), cellular network signal (a type of communication status), battery level, time, volume, and private chat (communication mode).

[0080] In one embodiment, the voice command recognition device in the human-computer interaction module 106 can realize communication control through voice commands, wherein the communication control includes at least one of the following functions: communication group switching, broadcast initiation, private chat request, etc. Voice commands include, for example, "switch group 1", "initiate broadcast", etc.

[0081] In one embodiment, the human-machine interface module 106 is equipped with a remote management module to enable remote management via an app, allowing users to remotely configure walkie-talkie parameters, manage team groups, and view communication records through a mobile app. Optionally, the remote management module can support remote device management via an app, enabling team management, device status viewing, communication log querying, and remote configuration.

[0082] For example, the human-computer interaction module 106 can be configured as follows: (1) equipped with a 1.5-inch OLED screen to display communication status, battery level, network signal, team information, etc.; (2) configured with multiple function physical buttons and knobs, including call control button, group switching button, and volume adjustment knob; (3) the voice command recognition device supports keyword-triggered command operations (such as "start broadcasting" and "exit team").

[0083] For example, see Figure 3 The human-machine interaction module 106 can be equipped with an OLED screen to display scan indicators (team scan status), Bluetooth connection indicators (a type of communication status), cellular network signal (a type of communication status), battery level display, time display, volume display, private chat indicator (communication mode), etc. The human-machine interaction module 106 can also be equipped with physical buttons with various functions, such as: walkie-talkie button, previous channel, next channel, monitor button, scan button, broadcast / private chat switch button, volume down, volume up, power switch button, and the human-machine interaction module 106 can also be equipped with a charging indicator light.

[0084] In one embodiment, the walkie-talkie may be equipped with a device operating system (e.g., configured in the main control processor 101) to support the human-machine interaction module 106 in implementing human-machine interaction functions. Optionally, the device operating system may be based on a real-time operating system (RTOS) and support multi-task concurrent scheduling. Optionally, the device operating system supports modular control, divided into communication management control for the Bluetooth Low Energy module 102' and the cellular network communication module 103', network protocol stack (or communication protocol stack) for the Bluetooth Low Energy module 102' and / or the cellular network communication module 103', audio processing control for the audio processing module 104, and interaction control for the human-machine interaction module 106.

[0085] In one embodiment, the communication protocol stack includes: (1) Bluetooth protocol stack: supporting ATT / GATT, LE Audio, Mesh Profile; (2) IP protocol stack: supporting IPv6, TCP / UDP, RTP / RTCP; (3) VoIP optimization layer: adaptive bandwidth management, packet loss retransmission, and voice FEC forward error correction.

[0086] In one embodiment, the walkie-talkie may be equipped with a team management system (e.g., configured in the main control processor 101). Through the team management system in conjunction with the human-computer interaction module 106 and / or the team management module 105, the following functions can be realized: (1) unique device ID identification; (2) team request, authentication, and channel allocation process management; (3) intra-group broadcast and point-to-point private chat switching control; (4) support for dynamic member management (add, remove, kick out, mute).

[0087] In one embodiment, the power management module 107 is connected to the main control processor 101 and is used to support charging control and power management.

[0088] For example, the power management module 107 may have at least one of the following functions: (1) supporting fast charging (such as USB PD protocol) and having a built-in intelligent power management chip; (2) providing remaining power estimation, low power alarm and over-temperature protection functions; (3) typical standby time of more than 100 hours and continuous talk time of more than 15 hours.

[0089] In one embodiment, see Figure 2 The power management module 107 can also be connected to a voltage regulator 109 (e.g., 3.7V LDO), which supplies power to the main control processor 101 and other components.

[0090] In one embodiment, see Figure 4The power management module 107 includes a charging control circuit and a power supply battery. The charging control circuit includes a charging control chip U1 and a switching transistor Q1. The charging control chip U1 includes a charging access pin 6, a charging output pin 7, a battery detection pin 1, and a signal output pin 2. The charging access pin 6 of the charging control chip U1 is connected to the charging interface. The charging output pin 7 of the charging control chip U1 is connected to the power supply battery through the pass terminal of the switching transistor Q1. The control terminal of the switching transistor Q1 is connected to the main control processor 101, which controls its conduction or deactivation to support the charging control circuit in starting or ending charging. The battery detection pin 1 of the charging control chip U1 is connected to the pass terminal of the switching transistor Q1 to detect the electrical signal corresponding to the power supply battery. The signal output pin 2 of the charging control chip U1 is connected to the main control processor 101 to determine the charging feedback signal IND based on the electrical signal and output the charging feedback signal IND to the main control processor 101, so that the main control processor 101 controls the switching transistor Q1 to turn off when it determines that the battery is fully charged based on the charging feedback signal IND.

[0091] In one embodiment, the circuit structure of the first capacitor C1 connected to the charging access pin 6 serves to stabilize the voltage.

[0092] In one embodiment, the circuit structure of the first resistor R1 and diode ZD connected to the charging output pin 6 can serve as both charging protection and leakage protection.

[0093] In one embodiment, the battery detection pin 1 of the charging control chip U1 is connected to the path terminal of the switching transistor Q1 to detect the voltage signal corresponding to the power supply battery to determine whether the power supply battery is fully charged. When fully charged, the charging feedback signal IND, representing full charge, can be output to the main control processor 101 through the signal output pin 2, so that the main control processor 101 controls the switching transistor Q1 to turn off; or when not fully charged, the charging feedback signal IND, representing not fully charged, can be output to the main control processor 101 through the signal output pin 2, so that the main control processor 101 controls the switching transistor Q1 to remain on.

[0094] In one embodiment, the circuit structure of the second capacitor C2 connected to the battery detection pin 1 of the charging control chip U1 serves to stabilize the voltage.

[0095] In one embodiment, the second resistor R2 connected to the signal output pin 2 of the charging control chip U1 can reduce signal interference.

[0096] In one embodiment, the charging interface also includes a fast charging chip.

[0097] In one embodiment, the charging control chip may be an SGM41524.

[0098] In one embodiment, the Bluetooth Low Energy module 102' can also be used to establish a Bluetooth Mesh network within a local area, supporting automatic device discovery and / or the formation of a group communication network to enable joining or forming a communication group.

[0099] In one implementation, each communication group corresponds to a separate group communication network.

[0100] In one embodiment, forming a communication group can be achieved by associating the communication identifiers of walkie-talkies already connected to the same mesh network. The communication identifiers may include a short-range communication identifier corresponding to the Bluetooth Low Energy module 102' and a long-range communication identifier corresponding to the cellular network communication module 103'. Thus, after forming the communication group, long-range and Bluetooth communication can be performed through the communication identifiers of each walkie-talkie. In one embodiment, low-latency voice calls can be made based on the group's communication network.

[0101] In one embodiment, the Bluetooth Low Energy module 102' uses Bluetooth 5.0 or a higher version protocol, supports dual-mode operation of BLE and Mesh networking, and can connect to a maximum of 128 devices simultaneously. Optionally, the Bluetooth Low Energy module 102' integrates a Bluetooth 5.0 protocol stack, supports Classic and BLE dual-mode, is compatible with the Bluetooth Mesh networking standard, and supports a maximum of 8 Mesh nodes connected simultaneously, expanding to 128 devices.

[0102] In one embodiment, the Bluetooth Mesh network supports dynamic switching between broadcast and point-to-point communication. This embodiment allows for administrator nodes within communication groups to control permissions based on the Bluetooth Mesh network.

[0103] In one embodiment, a schematic diagram illustrating the effect of communication between the communication group based on a Bluetooth Mesh network is shown below. Figure 5 .

[0104] In one embodiment, the low-power Bluetooth module 102' can achieve stable and efficient Bluetooth local communication, and its features include at least one of the following: (1) Dual-channel separation: the control channel and the data channel are separated to improve the communication concurrency performance; (2) Low power mode: the Bluetooth LE (Low Energy) protocol is used to extend the device's battery life; (3) Timeout protection and reconnection after disconnection: the connection status is automatically monitored and reconnection is seamless after disconnection; (4) Real-time voice coding optimization: the variable bit rate (VBR) audio coding based on Opus Codec is adopted, which can improve the voice quality and reduce the bandwidth requirement; (5) Dynamic channel selection: the link is optimized by adaptive frequency hopping (AFH) to avoid interference between traditional Bluetooth devices.

[0105] In the technical solution of this embodiment, the low-power Bluetooth module 102' configured in the walkie-talkie can achieve local communication without operator support, is independently controllable, has low latency, and is suitable for environments without public network coverage.

[0106] In one embodiment, the process by which the Bluetooth Low Energy module 102' implements Bluetooth local area communication includes at least one of the following: (1) Bluetooth device discovery and pairing: After the walkie-talkie is powered on, the Bluetooth communication module first starts broadcasting to send its own device identification information (including device ID, team status, remaining battery power, and other summary information) to surrounding devices. Among them, the broadcast period is initially set to 100ms; the discovery window is that the receiving device keeps listening and continuously scans the broadcast signal; the pairing connection strategy is to prioritize connecting to the Mesh node with the strongest signal (RSSI higher than -60dBm) and not fully loaded. Once the devices discover each other, they enter the pairing phase: • Pairing confirmation: The user confirms the pairing request through the physical key; (2) Building a Bluetooth Mesh Network: After pairing, the device automatically joins the Bluetooth Mesh network. The following mechanisms are used for communication within the group: Groupcast: Broadcast messages are sent between devices in the same group through the group address; Unicast: Point-to-point communication is conducted by specifying the target device ID; Configuration Server: The group administrator node is responsible for managing group members, allocating channels, setting permissions, and other operations. (3) Voice Communication Process: The voice transmission process during local area communication is as follows: The audio processing module 104 collects microphone input in real time; the audio processing module 104 performs audio front-end processing (AEC, NR, AGC) and then encodes and compresses the audio; the encoded and compressed file is packaged and sent to the target node (communication group) via Bluetooth GATT service; the external device in the communication group decodes and decrypts the audio and plays it through the speaker. Among them, variable bit rate (VBR) audio encoding based on Opus Codec is used to balance high fidelity and low bandwidth.

[0107] (4) Abnormal handling and automatic reconnection: When the Bluetooth connection is lost due to increased distance or obstruction, the system automatically enters the reconnection mode: sends a rediscovery broadcast every 500ms; attempts to re-pair and reconnect to the original communication group; if the disconnection lasts for more than 60 seconds, it triggers the switching of the backup communication channel (e.g., switching to cellular network communication).

[0108] In one embodiment, the cellular network communication module 103' can support 4G LTE and 5G NR dual-mode connectivity and is compatible with eSIM or physical SIM cards.

[0109] In one embodiment, the remote communication of the cellular network communication module 103' uses the RTP protocol for voice data stream transmission and the RTCP protocol for link status monitoring.

[0110] In one embodiment, the cellular network communication module 103' can switch the audio encoding bit rate in real time according to the current bandwidth of the cellular network through a dynamic bit rate adjustment mechanism.

[0111] In one embodiment, after the cellular network communication module 103' is activated, during cellular network communication, the server adopts a distributed deployment architecture, and the edge server forwards the audio stream to reduce end-to-end latency.

[0112] For example, the cellular network communication module 103' has a built-in 4G LTE / 5G NR dual-mode communication module, supports eSIM remote configuration or pluggable SIM cards, is network compatible with mainstream operators, and supports optimized voice services such as VoLTE and eMBMS.

[0113] In one embodiment, the core design of the cellular network communication module 103' includes at least one of the following: (1) Integrated cellular communication chip (compatible with eSIM and traditional SIM card); (2) VoIP protocol optimization: Low-latency remote voice transmission based on RTP / UDP protocol; (3) Distributed server architecture: Intercom data is forwarded through the nearest edge server to reduce transmission latency; (4) Intelligent Channel Switching: When Bluetooth link quality deteriorates or communication is interrupted, the system automatically switches to cellular network communication without user intervention. The system has a built-in intelligent decision engine that dynamically switches communication channels based on Bluetooth RSSI (signal strength) threshold monitoring, Bluetooth packet loss rate detection, cellular network quality indicators (such as RTT, packet loss rate, bandwidth) assessment, power detection (low power priority to Bluetooth), and application scenario priority strategies (such as mandatory cellular priority in rescue scenarios). During the switching process, the system adopts a streaming media breakpoint resume mechanism to ensure uninterrupted calls and a smooth and seamless experience.

[0114] (5) Traffic optimization: The audio data adopts error recovery and compression algorithms to reduce cellular data consumption.

[0115] In the technical solution of this embodiment, the cellular network communication module 103' configured in the walkie-talkie can realize seamless communication across regions and areas, and is particularly suitable for task collaboration between different areas such as urban and rural areas, and land and sea.

[0116] In one embodiment, the remote communication process of the cellular network communication module 103' includes at least one of the following: (1) Initialization of remote communication mode: When the Bluetooth communication link is disconnected or the signal strength is lower than the set threshold (e.g., -85dBm), the device triggers the remote communication mode: activates the cellular communication module; registers with the nearby base station network to obtain an IP address; connects to a dedicated intercom server through a VPN tunnel; verifies the team identity and permission information, and restores the original communication group status; (2) Data channel establishment: Remote communication uses lightweight real-time transmission based on the UDP protocol: RTP protocol is used for voice stream transmission; RTCP protocol is used for link status monitoring and packet loss control; voice data is encoded using Opus Codec with a default bandwidth of 24kbps, and packet loss compensation supports FEC (forward error correction) mechanism. Data transmission path after the data channel is established: walkie-talkie → cellular network → VPN tunnel → edge cloud server → target external device; Among them, the relay latency of the edge cloud server is controlled within 20ms, ensuring that the overall end-to-end voice communication latency is less than 100ms, meeting the real-time intercom requirements.

[0117] (3) Optimized call stability: To ensure the stability of remote intercom, this invention designs the following strategies: Dynamic Bit Rate Adjustment (ABR) switches audio quality according to real-time network conditions; Timeout Retransmission ensures reliable data delivery; Two-way Heartbeat Detection Mechanism sends a heartbeat packet every 3 seconds, and if there is no response after more than 3 times, it is determined that the connection is lost and automatically reconnects.

[0118] In one embodiment, the main control processor 101 may further include a channel switching module; the channel switching module is used to automatically or manually switch the cellular network communication module 103' from the Bluetooth Low Energy module 102' for voice communication when the signal strength of the communication signal of the Bluetooth Low Energy module 102' is lower than a preset strength value representing a weak signal state or when the Bluetooth link corresponding to the Bluetooth Low Energy module 102' is unavailable.

[0119] In one embodiment, the channel switching module can intelligently switch between Bluetooth channels and cellular network channels based on Bluetooth signal strength, packet loss rate, or user commands.

[0120] In one embodiment, the channel switching module pre-activates the cellular network communication module 103' when the signal strength RSSI of the Bluetooth signal is below -85dBm, in order to reduce switching delay.

[0121] In one implementation, after the Bluetooth link is lost, the walkie-talkie automatically retryes the connection within 60 seconds. If the reconnection fails, the channel switching module controls the switch to cellular network communication mode.

[0122] In one embodiment, the following process can be implemented through the channel switching module: (1) Activate Bluetooth local communication of Bluetooth low power module 102'; (2) Determine whether the signal strength RSSI of the Bluetooth signal is below -85dBm and / or whether the connection has dropped; (3) Maintain Bluetooth local communication when the signal strength RSSI is not lower than -85dBm and / or the connection is not dropped; (4) When the signal strength RSSI is below -85dBm and / or the call drops, switch to cellular network communication and / or use the breakpoint resume mechanism for voice communication; (5) Determine whether to re-enter the Bluetooth coverage area; (6) When re-entering the Bluetooth coverage area, switch to Bluetooth local communication; (7) Maintain cellular network communication when not re-entering Bluetooth coverage area.

[0123] In one embodiment, the channel switching logic details of the channel switching module may include: (1) The switching trigger conditions (the standard for triggering the communication link switching) include at least one of the following: the Bluetooth RSSI signal strength is lower than the set threshold (such as -85dBm), the Bluetooth packet loss rate exceeds 15%, the Bluetooth link disconnection timeout is 60 seconds; the user manually initiates the remote communication mode switching (such as pressing the switch button).

[0124] (2) Handover process: 1. Trigger handover condition detection and report handover request; 2. Low power Bluetooth module 102' buffers the currently incomplete audio data; 3. Cellular network communication module 103' is activated and completes network registration; 4. Establish VPN channel and complete authentication with server; 5. Rebuild call group relationship and logical channel; 6. Continue voice data stream transmission, and use breakpoint resume mechanism to fill the voice interruption caused by Bluetooth disconnection; 7. After handover is completed, status indicator light / screen prompts user that the channel has been switched.

[0125] (3) Switch back to Bluetooth priority process: When the walkie-talkie re-enters the effective Bluetooth coverage range and the Bluetooth connection quality is restored to good (RSSI>-65dBm), the system can intelligently switch back to Bluetooth local communication to reduce cellular network traffic consumption; automatically reconnect to the original communication group, terminate the VPN channel connection, and restore local broadcast and private chat functions.

[0126] In one embodiment, the strategy for the channel switching module to implement intelligent channel switching includes: (1) Switching priority settings Channel priority is dynamically set by the system based on the current communication environment, with the following basic rules: Local Bluetooth channel priority: When the signal quality is good, Bluetooth Mesh network is used first for communication to reduce data consumption and latency; Cellular remote channel is secondary: when the Bluetooth link is lost or the signal strength is lower than the set threshold (such as RSSI<-85dBm), the cellular network remote communication will be switched first.

[0127] Forced remote priority in emergency scenarios: In emergency mode (such as SOS distress call, disaster emergency), cellular remote communication is forcibly enabled regardless of Bluetooth status to ensure call quality and reliability.

[0128] (2) Channel switching settings: The channel switching module adopts a "pre-judgment + pre-warm-up" mechanism for channel switching, that is: when the Bluetooth signal strength RSSI is continuously lower than the warning threshold (e.g., -80dBm), the cellular network communication module 103' is pre-activated to register the cellular network; a VPN connection is established in the background and maintained in handshake state simultaneously; once the Bluetooth link is interrupted, it quickly switches to the remote channel of the activated cellular network communication module 103', achieving a switching time of <500ms and ensuring uninterrupted calls.

[0129] (3) Load balancing strategy: When the cellular network communication module 103' is activated for cellular network communication, the audio encoding bit rate is dynamically adjusted according to the real-time network conditions (RTT, packet loss rate, bandwidth); when the network is under high load or weak network conditions, the audio bit rate is reduced, and a low bandwidth Opus configuration (such as 16kbps) is adopted to ensure that the voice is clear and indistinguishable; when the network recovers well, it automatically switches back to high-fidelity mode (such as 32kbps). The channel switching module of this embodiment adopts a load balancing strategy to ensure that communication real-time performance and basic sound quality are prioritized even in a weak network environment.

[0130] The above technical solutions can ensure that the walkie-talkie can achieve stable and low-latency communication in different environments.

[0131] In one embodiment, the audio processing module 104 is used to process the received audio information into left channel audio data and right channel audio data, and to perform playback control on the left channel audio data and / or right channel audio data.

[0132] In one embodiment, the audio information received by the audio processing module 104 may be audio information collected by a local microphone, or audio information collected and transmitted by an external device through the Bluetooth Low Energy module 102' and / or the cellular network communication module 103'.

[0133] In one embodiment, the audio processing module 104 may include a first speaker and a second speaker for playing left channel audio data and / or right channel audio data through the first speaker and the second speaker, respectively.

[0134] In another embodiment, the audio processing module 104 includes at least one speaker. The audio processing module 104 is configured to, when the main control processor 101 detects the presence of an external device within a preset distance, play only one of the left channel audio data and the right channel audio data through its own speaker, and the other of the left channel audio data and the right channel audio data played synchronously with the external device forms a spatial reverberation effect. For example, when the main control processor 101 detects the presence of an external device 200 within a preset distance, and the external device 200 is located in the left area of ​​the walkie-talkie 100, the control audio processing module 104 plays the right channel audio data only through its own speaker, and the left channel audio data played synchronously with the external device 200 forms a spatial reverberation effect; as another example, when the main control processor 101 detects the presence of an external device 200 within a preset distance through the near-field communication module 102, and the external device 200 is located in the right area of ​​the walkie-talkie 100, the control audio processing module 104 plays the left channel audio data only through its own speaker, and the right channel audio data played synchronously with the external device 200 forms a spatial reverberation effect.

[0135] In one embodiment, the audio processing module 104 is used to process the received audio information into left channel audio data and right channel audio data; the main control processor 101 is also used to send the left channel audio data and right channel audio data obtained by the audio processing module 104 to the two external devices respectively through the near-field communication module 102 when the two external devices 200 are detected to be at a preset distance, so that the two external devices can play synchronously and form a spatial reverberation effect.

[0136] In one embodiment, the walkie-talkie 100 and an external device, or two external devices, respectively play left-channel audio data and right-channel audio data to form a simulated spatial reverberation effect diagram, see [reference]. Figure 6 .

[0137] In one embodiment, the audio processing module 104 may also support multiple reverb processing modes. For example, it may support at least four reverb processing modes, including small room mode, hall mode, outdoor mode, church mode, etc.

[0138] In one embodiment, the walkie-talkie of this embodiment may further include a power amplifier chip 108, which can be connected to the audio input terminal of the speaker. The chip can amplify the audio data and provide it to the speaker for playback to improve the sound quality.

[0139] In one embodiment, the walkie-talkie of this embodiment may further include an audio input interface 110 (or AUX), and the main control processor 101 can be connected to a speaker through the audio input interface 110.

[0140] In one embodiment, the audio processing module 104 incorporates left and right channel separation technology and reverberation processing technology into a traditional monophonic walkie-talkie. Specifically, it includes: (1) Dual-machine collaborative mode: After any two walkie-talkies are paired, one is designated as the left channel output terminal and the other is designated as the right channel output terminal; (2) Bluetooth synchronization mechanism: Utilize low-latency Bluetooth synchronization protocols (such as Isochronous Channels) to ensure that the audio data of the left and right channels are consistent in real time, and the latency difference is controlled within 10 milliseconds; (3) Dynamic reverberation algorithm: The system has built-in multiple spatial reverberation models (such as small room, auditorium, valley, open plain mode), which can be automatically switched according to the application scenario to simulate different sound field effects; (4) User-defined adjustment: Allows users to adjust parameters such as reverberation depth, delay, and mixing ratio to meet personalized needs.

[0141] In one embodiment, the audio processing module 104 can incorporate multiple reverberation models (Hall, Room, Plate, Cathedral, etc.) and perform real-time spatialization processing to dynamically control the reverberation time (RT60), early reflection delay, and reverberation depth. In addition, it can support manual adjustment by the user or intelligent switching of the reverberation mode by the system according to the scene.

[0142] In the technical solution of this embodiment, the audio processing module 104 in the walkie-talkie can greatly enhance the auditory spatial sense of the walkie-talkie, reduce long-term mono listening fatigue, and improve the communication experience, making it particularly suitable for long-term wearing operation scenarios.

[0143] In one embodiment, the audio processing module 104 may be configured with a high-sensitivity MEMS microphone array to achieve 360° omnidirectional sound pickup.

[0144] In one embodiment, the audio processing module 104 may also have a built-in DSP chip that supports audio preprocessing algorithms such as AEC (echo cancellation), NR (noise suppression), and AGC (automatic gain control); it can be used to process the audio data obtained from sound pickup.

[0145] In one embodiment, the audio processing module 104 may also be equipped with a stereo DAC to drive a high-fidelity speaker or headphone output.

[0146] In one embodiment, the processing flow of the audio processing module 104 may include: (1) Left and right channel coordination is used to enable two paired devices (this walkie-talkie 100 and external devices, and two external devices) to establish synchronous communication via Bluetooth. During communication, one device is responsible for processing and outputting the left channel of the audio signal, and the other device is responsible for processing and outputting the right channel of the audio signal. The synchronous transmission mechanism ensures that the time error between the two ends of the signal is less than 10ms, avoiding stereo positioning confusion; The internal processing flow of this walkie-talkie 100 includes: 1. Audio information is collected using a local microphone; 2. Divide the audio information signal into left channel audio data and / or right channel audio data within the audio processing module 104; 3. Apply reverb processing function to overlay independent early reflection and reverb tail for each audio data. 4. The reverberated left channel audio data is sent to an external device identified as the left channel device via Bluetooth Low Energy module 102'. 5. The reverberated right channel audio data is sent to an external device identified as the right channel device via Bluetooth Low Energy module 102'.

[0147] 6. All external devices re-align and play according to the timestamp.

[0148] In this way, through the slight time difference between the left and right channels and the simulation of spatial reflection, users can perceive a more natural spatial sound field when they are close to the two-channel speakers.

[0149] In another implementation, the reverberated left and right channel audio data can be sent to the same external device via a Bluetooth Low Energy module 102', allowing the external device to realign based on timestamps and play the audio through binaural headphones. Thus, by simulating the minute time difference and spatial reflections between the left and right channels, users perceive a more natural spatial sound field when wearing binaural headphones.

[0150] (2) Reverb parameter configuration (the reverb effect can be automatically adjusted by the system according to the usage scenario), the parameters are as follows:

[0151] Optionally, the walkie-talkie's audio processing module 104 can preset four reverb modes: 1. Small Room Mode: Short RT60, slight diffusion; 2. Large Hall Mode: 60mm long, high diffusion; 3. Outdoor (Open Field) mode: Low reflection, low diffusion; 4. Cathedral Mode: Extremely long RT60, rich diffusion.

[0152] It should be understood that users can also customize the reverb effect via device shortcuts or mobile applications.

[0153] (3) The reverberation algorithm can be supported by an improved Schroeder reverberator structure, including: multiple parallel Comb filters (simulating reflection superposition), multiple series Allpass filters (simulating diffusion), and time-varying ModulatedDelay (avoiding periodic oscillation).

[0154] All processing steps are accelerated on the hardware of the herbal slice processing module to ensure that the latency is controlled within 5ms.

[0155] In one embodiment, the main control processor 101 may be a high-performance, low-power ARM Cortex-M series processor, responsible for overall device coordination and control, task management, Bluetooth / cellular communication scheduling, audio processing, etc.

[0156] For example, the walkie-talkie 100 provided in this embodiment may include a main control processor 101, a low-power Bluetooth module 102' connected to the main control processor 101, a cellular network communication module 103', an audio processing module 104, a team management module 105, and a human-computer interaction module 106. The aforementioned walkie-talkie can achieve low-latency team calls in a local area through a Bluetooth Mesh network built or joined by the low-power Bluetooth module 102', and supports automatic switching to the cellular network of the cellular network communication module 103' when the Bluetooth signal is weak or the link is disconnected, to achieve long-distance seamless voice communication; and the audio processing module 104 performs left and right channel separation and dynamic reverberation processing to improve the spatial sense and realism of the voice; and the team management module 105 supports multiple groups coexisting, and flexible switching between broadcast and private chat.

[0157] See Figure 7 The functions and configurations of each module in the walkie-talkie 100 provided in this embodiment include: (1) Functions of the Bluetooth Low Energy module 102', such as dual-channel separation, low-power mode, timeout protection and reconnection after disconnection, real-time voice coding optimization, and dynamic channel selection; (2) The cellular network communication module 103' integrates a cellular communication chip and adopts a distributed server architecture. Its functions include VoIP protocol optimization (communication protocol stack), intelligent channel switching (implemented through an intelligent decision engine), and traffic optimization. (3) Functions of the team management module 105, such as Bluetooth Mesh team formation, role division, multi-communication group management, broadcast and private chat modes, and quick switching mechanism; (4) Cellular network communication module 103' is configured with dynamic reverberation algorithm (such as built-in reverberation model), and audio processing module 104 has functions such as dual-machine collaborative mode (such as two walkie-talkies or two external devices collaborative mode), Bluetooth synchronization mechanism, user-defined adjustment (adjusting reverberation mode), etc. (5) The human-computer interaction module 106 is equipped with an OLED display screen, physical buttons / knobs, device operating system, team management system, etc., and the functions of the human-computer interaction module 106 include voice command recognition, APP remote management, etc.

[0158] The walkie-talkie 100 provided in this embodiment solves the problems of limited communication distance, monotonous audio experience, complex team management (poor networking flexibility), lack of remote communication capability, and limited system upgrades of traditional walkie-talkies (such as devices based on VHF / UHF frequency bands).

[0159] The walkie-talkie 100 provided in this embodiment can integrate and coordinate the low-power Bluetooth module 102' and the cellular network communication module 103' through a reasonable switching strategy and communication protocol, thereby achieving a high-quality walkie-talkie user experience.

[0160] Traditional walkie-talkies generally use monophonic transmission, lacking sound localization and reverberation effects, resulting in a monotonous and dull audio playback experience. The walkie-talkie 100 in this embodiment introduces left and right channel reverberation collaborative processing through the audio processing module 104, which can simulate the sound diffusion characteristics of a natural environment, making walkie-talkies more realistic and natural, thus meeting the high demands of modern users for audio experience. In scenarios such as outdoor sports and musical activities, the walkie-talkie 100 in this embodiment, through the audio processing module 104, not only transmits voice clearly but also provides a certain sense of space and stereo effect to reduce auditory fatigue during prolonged use and improve user satisfaction.

[0161] The walkie-talkie 100 provided in this embodiment can be applied to scenarios such as construction sites, emergency rescue, outdoor exploration, and industrial command, and has good application value and promotion prospects.

[0162] Application Scenario Examples (To illustrate the scope of this application, several typical application scenarios are listed as examples, but are not limited to the following examples): (1) Multi-group communication application at construction sites On large construction project sites, different work teams (such as steel reinforcement team, carpentry team, and electrician team) need to communicate independently, but also need to coordinate in a unified manner at critical moments.

[0163] The walkie-talkie system built using the walkie-talkie of this application allows for the setup of multiple communication groups on-site. Reinforcing Steel Team → Broadcast Channel 1 Carpentry Team → Radio Channel 2 Electrician Team → Radio Channel 3 Project Management Team → All Broadcast Priority Channel Members within each group can communicate freely without interference between different groups. When the project manager issues a broadcast command, all channels receive it uniformly to ensure that the command is delivered in a consistent manner.

[0164] The walkie-talkie system built using the walkie-talkie of this application may have the following features: Bluetooth local area communication to ensure low latency, free switching between groups to facilitate unified scheduling, and automatic switching to cellular communication to ensure uninterrupted operation when there is severe building obstruction.

[0165] (2) Emergency rescue remote communication applications In disaster relief operations such as earthquakes and floods, rescue teams need to conduct communication and collaboration across a wide area and complex terrain in the disaster zone.

[0166] The walkie-talkie system built using the walkie-talkie of this application can be used for the following applications: Each rescue team forms its own communications team (such as reconnaissance team, medical team, and transportation team); Group members communicate locally via Bluetooth; When the group disperses beyond the Bluetooth range, it automatically switches to the cellular network to synchronize the status and location information of each group in real time. The remote management function of the walkie-talkie allows the management platform to view the distribution of all personnel, their location trajectories, and communication records.

[0167] The walkie-talkie system built using the walkie-talkie of this application can have the following features: long-range communication capability covering an extremely wide area; dynamic networking and real-time team reconfiguration.

[0168] (3) Application of outdoor extreme sports (skiing / hiking / mountaineering) In outdoor activities such as skiing, hiking, and mountaineering, team members often need to communicate their location, routes, and risk warnings in real time.

[0169] A walkie-talkie system constructed using the walkie-talkie of this application can be used for the following applications: Members can create a small local area network via Bluetooth; Seamless switching via cellular network communication over large areas such as ski resorts and high mountains; The left and right channel reverb simulates natural environmental sound effects, improving the realism of the audio and enhancing the perception of location.

[0170] The walkie-talkie system built using the walkie-talkie of this application may have the following features: ultra-lightweight design, long battery life; high-fidelity sound effect, suitable for extreme environments.

[0171] Based on the technical concept of walkie-talkies provided in this application, embodiments of this application also provide a walkie-talkie system, including at least two walkie-talkies as described in the first or second embodiment; the at least two walkie-talkies establish a short-range communication connection through their respective short-range communication modules to form a communication group; the walkie-talkies are used to receive audio information sent by other walkie-talkies in the communication group through their own short-range communication modules or long-range communication modules, and to perform audio processing and playback control through their own audio processing modules, or to send audio information to other walkie-talkies in the communication group through their own short-range communication modules or long-range communication modules.

[0172] In the walkie-talkie system provided in this embodiment, at least two walkie-talkies have short-range communication capabilities as well as long-range communication capabilities. Furthermore, each walkie-talkie can achieve stereo sound playback functionality on its own or in conjunction with other walkie-talkies in the vicinity, thereby enhancing the user experience.

[0173] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0174] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0175] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A intercom comprising a master processor, a short distance communication module connected with the master processor, a long distance communication module, characterized in that, It also includes an audio processing module connected to the main control processor; The short-range communication module is controlled by the main control processor to join or form a communication group within a local area, so as to receive audio information from external devices in the communication group or send audio information to the external devices. The remote communication module is controlled by the main control processor to establish a remote communication connection with the external device to receive audio information from the external device or send audio information to the external device. The audio processing module is used to process the received audio information into left channel audio data and right channel audio data, and to control the playback of the left channel audio data and / or right channel audio data. The main control processor is used to switch between the near-field communication module and the long-range communication module, and to output the audio information received through the near-field communication module or the long-range communication module to the audio processing module.

2. The walkie-talkie according to claim 1, characterized in that, The short-range communication module is a Bluetooth communication module, and the long-range communication module is a cellular network communication module; and / or, The external devices include other walkie-talkies and / or other electronic devices configured with walkie-talkie functionality.

3. The walkie-talkie according to claim 1 or 2, characterized in that, The near-field communication module and the long-range communication module are each connected to the main control processor via independent lines; When the main control processor detects that the short-range communication module has malfunctioned or that the signal strength of the communication signal of the short-range communication module is lower than the preset strength value that represents a weak signal state, it disconnects the line connected to the short-range communication module and connects the line connected to the remote communication module, so as to receive audio information from the external device or send audio information to the external device through the remote communication module.

4. The walkie-talkie according to claim 3, characterized in that, The main control processor includes a channel switching module, and both the near-field communication module and the long-field communication module are connected to the channel switching module; When the channel switching module detects that the signal strength of the communication signal of the near-field communication module is lower than a preset strength value that represents a weak signal state, or when the near-field communication module malfunctions, it activates the remote communication module.

5. The walkie-talkie according to claim 1, characterized in that, The audio processing module includes a first speaker and a second speaker, used to play left channel audio data and / or right channel audio data through the first speaker and the second speaker respectively; or... When the main control processor detects that the external device is within a preset distance, the audio processing module plays only one of the left channel audio data and the right channel audio data through its own speaker, and the other of the left channel audio data and the right channel audio data played synchronously with the external device forms a spatial reverberation effect.

6. The walkie-talkie according to claim 1, characterized in that, The walkie-talkie also includes a team management module connected to the main control processor. The team management module supports the management and control of multiple communication groups and supports private chat control with at least one external device in the communication group.

7. The walkie-talkie according to claim 1 or 6, characterized in that, The walkie-talkie also includes a human-machine interface module connected to the main control processor, the human-machine interface module supporting display control and human-machine interaction control; and / or, The walkie-talkie also includes a power management module connected to the main control processor, which supports charging control and power management.

8. The walkie-talkie according to claim 7, characterized in that, The power management module includes a charging control circuit and a power supply battery; The charging control circuit includes a charging control chip and a switching transistor; The charging control chip includes a charging input pin, a charging output pin, a battery detection pin, and a signal output pin. The charging access pin of the charging control chip is connected to the charging interface; The charging output pin of the charging control chip is connected to the power supply battery through the path terminal of the switching transistor. The control terminal of the switching transistor is connected to the main control processor, which controls it to be turned on or off to support the charging control circuit to start or stop charging. The battery detection pin of the charging control chip is connected to the path terminal of the switching transistor to detect the electrical signal corresponding to the power supply battery. The signal output pin of the charging control chip is connected to the main control processor, and is used to determine the charging feedback signal according to the electrical signal, and output the charging feedback signal to the main control processor, so that the main control processor controls the switching transistor to turn off when it determines that the battery is fully charged based on the charging feedback signal.

9. The walkie-talkie according to claim 8, characterized in that, The charging interface also includes a fast charging chip; and / or, The charging control chip is model SGM41524.

10. A walkie-talkie system, characterized in that, Includes at least two walkie-talkies as described in any one of claims 1 to 9; At least two of the walkie-talkies establish a short-range communication connection through their respective short-range communication modules to form a communication group; The walkie-talkie is used to receive audio information sent by other walkie-talkies in the communication group through its own short-range communication module or long-range communication module, and to perform audio processing and playback control through its own audio processing module, or to send audio information to other walkie-talkies in the communication group through its own short-range communication module or long-range communication module.

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