A network audio broadcast system

Abstract

The utility model discloses a kind of network audio broadcast system, belong to audio broadcast technical field, control end includes server and sub-control center, server and sub-control center communication connection;Transmission module includes wired transmission unit and wireless transmission unit, wired transmission unit is connected with server, sub-control center and audio terminal group wired connection respectively;Audio terminal group includes several speaker terminals, each speaker terminal is connected with wired transmission unit, wireless transmission unit communication connection;Auxiliary control module includes switch control unit and auxiliary equipment group, switch control unit is connected with server, sub-control center communication respectively;Power module includes main power unit and standby power unit, main power unit is connected with control end, transmission module, audio terminal group and auxiliary control module electricity respectively.The utility model uses above-mentioned a kind of network audio broadcast system, by constructing multi-link transmission architecture, integrated equipment linkage control function, improve system flexibility and scene adaptability.

Description

Technical Field

[0001] This utility model relates to the field of audio broadcasting technology, and in particular to a network audio broadcasting system. Background Technology

[0002] As public address needs continue to evolve, existing network audio broadcasting systems are increasingly revealing several shortcomings: Firstly, most systems rely excessively on wired network transmission. In complex environments (such as outdoor emergency scenarios and temporary event venues), wired deployment is costly, inflexible, and struggles to overcome physical space limitations. Secondly, while some systems support wireless transmission, they lack a "wired + wireless" dual backup mechanism. A single transmission link failure can easily lead to audio interruption, failing to meet the stability requirements of scenarios such as emergency broadcasts and public announcements. Furthermore, existing systems generally lack the ability to coordinate control of auxiliary management equipment, failing to simultaneously control the connection and disconnection of audio broadcasts and peripheral terminal devices (such as lights and displays), making it difficult to adapt to the integrated operation needs of diverse scenarios. Utility Model Content

[0003] The purpose of this invention is to provide a network audio broadcasting system that effectively solves the problems of poor flexibility, insufficient stability, and low adaptability to scenarios in existing systems through multi-link transmission, device linkage, and dual power backup.

[0004] To achieve the above objectives, this utility model provides a network audio broadcasting system, including a control terminal, a transmission module, an audio terminal group, an auxiliary management and control module, and a power supply module; The control unit includes a server and a sub-control center. The server and the sub-control center communicate with each other and are used to generate audio signals and control commands. The transmission module includes a wired transmission unit and a wireless transmission unit. The wired transmission unit is wired to the server, the sub-control center and the audio terminal group respectively, and is used to transmit wired audio signals. The wireless transmission unit includes a 4G wireless terminal and a wireless communication antenna. The 4G wireless terminal is wirelessly connected to the server, the sub-control center and the audio terminal group respectively. The wireless communication antenna is connected to the 4G wireless terminal and is used to transmit wireless audio signals. The audio terminal group includes several speaker terminals, each of which is communicatively connected to a wired transmission unit and a wireless transmission unit to receive and play audio signals. The auxiliary control module includes a switch control unit and an auxiliary equipment group. The switch control unit is communicatively connected to the server and the sub-control center. The auxiliary equipment group includes several auxiliary control devices, each of which is electrically connected to the switch control unit. The switch control unit is used to receive control commands from the control terminal and control the on / off state of the auxiliary control devices. The power supply module includes a main power supply unit and a backup power supply unit. The main power supply unit is electrically connected to the control terminal, the transmission module, the audio terminal group and the auxiliary management module, respectively, and is used to provide the main power supply. The backup power unit is connected to the main power unit and is electrically connected to the control terminal, transmission module, audio terminal group and auxiliary management module respectively, to provide backup power when the main power unit fails.

[0005] Preferably, the wired transmission unit includes an RJ45 network port and an Ethernet switch. The RJ45 network ports are respectively set on the server, the control center and the speaker terminal. The Ethernet switch is connected to each RJ45 network port through a network cable to form a wired transmission link.

[0006] Preferably, the 4G wireless terminal integrates a 4G communication module, which is connected to the wireless communication antenna signal for receiving and transmitting 4G wireless signals; the speaker terminal has a built-in wireless receiving module, which is matched with the 4G wireless terminal for receiving wireless audio signals.

[0007] Preferably, the auxiliary control equipment includes lighting equipment, display equipment and alarm equipment, and the switch control unit includes a relay module. The control end of the relay module is connected to the server and the sub-control center for communication, and the output end of the relay module is electrically connected to each auxiliary control device.

[0008] Preferably, the control terminal also includes an audio processing unit, which is connected to the server and the sub-control center and is used to encode, reduce noise, and adjust the gain of the audio signal.

[0009] Preferably, the audio terminal group further includes an audio decoding unit, which is connected to the wired transmission unit, the wireless transmission unit and the speaker terminal respectively, and is used to decode the received audio signal and transmit it to the speaker terminal.

[0010] Preferably, the main power supply unit of the power supply module includes an AC power interface and an AC / DC converter. The AC power interface is used to connect to 220V AC power, and the AC / DC converter is connected to the AC power interface to convert AC power into DC power required by each module. The backup power supply unit includes a lithium battery pack and a charging management module. The charging management module is connected to the main power supply unit to charge the lithium battery pack when the main power supply unit supplies power.

[0011] Preferably, it also includes a switching control unit, which is connected to the wired transmission unit, the wireless transmission unit and the speaker terminal respectively, and is used to detect the connection status of the wired transmission link. When the wired transmission link is interrupted, it automatically switches to the wireless transmission link to transmit audio signals.

[0012] Preferably, the switching control unit has a built-in signal detection module and a switching logic module. The signal detection module is used to detect the strength and continuity of the wired audio signal in real time, and the switching logic module is used to trigger link switching based on the detection results.

[0013] Preferably, the sub-control center includes a human-machine interaction unit, which includes a touch screen and physical buttons for manual input of control commands and adjustment of audio parameters.

[0014] Therefore, the network audio broadcasting system of the present invention adopts the above structure, which combines the wired transmission unit and the wireless transmission unit of the transmission module, retains the stability of wired transmission, and realizes wireless audio transmission with the help of 4G wireless terminals. It does not rely on fixed wired deployment, can be quickly adapted to temporary sites, outdoor emergency and other scenarios, and improves the system deployment flexibility. The wired and wireless links of the transmission module form a dual backup. With the automatic detection and switching function of the switching control unit, it can seamlessly switch to the backup link when a single link fails. At the same time, the main and backup power supply design of the power supply module further ensures the continuous operation of the system when the power is off, and avoids interruption of audio broadcasting. The auxiliary control module links the auxiliary equipment group through the switch control unit to realize the synchronous on / off control of audio broadcasting and auxiliary control equipment, which can meet the diverse needs of campuses, shopping malls, emergency scenarios, etc., and improve scenario adaptability.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is an overall module block diagram of an embodiment of a network audio broadcasting system according to the present invention; Figure 2 This is a module relationship diagram of an embodiment of a network audio broadcasting system according to the present invention. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] Example The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0020] like Figures 1-2 As shown, the present invention provides a network audio broadcasting system with the above-described structure, comprising a control terminal, a transmission module, an audio terminal group, an auxiliary control module, and a power supply module.

[0021] The control unit includes a server, a sub-control center, and an audio processing unit. The server and the sub-control center are connected via Ethernet. The sub-control center is equipped with a human-machine interface (touchscreen + physical buttons), through which staff can input control commands (such as audio playback commands and auxiliary equipment control commands). The audio processing unit is connected to the server and the sub-control center and has built-in encoding, noise reduction, and gain adjustment modules. It can encode the original audio signal into a format suitable for transmission and perform noise reduction processing and volume gain adjustment to ensure audio quality.

[0022] The transmission module includes a wired transmission unit, a wireless transmission unit, and a switching control unit; Wired transmission unit: includes RJ45 network ports and Ethernet switches. The server, control center and each speaker terminal are equipped with RJ45 network ports. The Ethernet switches are connected to each RJ45 network port through Category 6 network cables to form a gigabit wired transmission link, ensuring high bandwidth and low latency audio transmission. Wireless transmission unit: includes a 4G wireless terminal and a wireless communication antenna. The 4G wireless terminal integrates a 4G communication module, and the wireless communication antenna is a high-gain omnidirectional antenna that is connected to the 4G communication module. The 4G wireless terminal establishes a wireless connection with the server and the control center through the 4G network. At the same time, each speaker terminal has a built-in wireless receiving module that matches the 4G wireless terminal to receive wireless audio signals. Switching control unit: It has a built-in signal detection module and a switching logic module. The signal detection module collects the audio signal strength and continuity of the wired transmission link in real time (such as detecting the signal packet loss rate every 100ms). When the wired signal packet loss rate exceeds 5% or the signal is interrupted, the switching logic module automatically triggers link switching and controls the speaker terminal to switch from wired receiving mode to wireless receiving mode to ensure uninterrupted audio playback.

[0023] The audio terminal group includes several speaker terminals and an audio decoding unit; each speaker terminal is connected to the RJ45 network port of the wired transmission unit and the wireless receiving module of the wireless transmission unit; the audio decoding unit is connected to the wired transmission unit, the wireless transmission unit and the speaker terminals respectively, and can decode the received encoded audio signals (wired or wireless) and convert them into analog audio signals that can be played by the speaker terminals, adapting to the playback needs of different types of speaker terminals.

[0024] The auxiliary control module includes a switch control unit and an auxiliary equipment group; Switch control unit: adopts industrial-grade relay module, and the control terminal communicates with the server and sub-control center via Ethernet, and can receive on / off commands issued by the control terminal; Auxiliary equipment group: including lighting equipment (such as classroom lights), display equipment (such as bulletin boards) and alarm equipment (such as emergency alarm bells). Each auxiliary control device is connected to the output terminal of the relay module through a power cord. When the control terminal issues the "campus class broadcast" command, the relay module simultaneously controls the classroom lighting equipment and bulletin board to be powered on, realizing the linkage between audio broadcast and auxiliary equipment.

[0025] The power supply module includes a main power supply unit and a backup power supply unit; Main power supply unit: includes an AC power interface and an AC / DC converter. The AC power interface connects to 220V AC power, and the AC / DC converter converts the AC power to 12V / 24V DC power, which powers the control terminal, transmission module, audio terminal group and auxiliary management module respectively. Backup power unit: includes a lithium battery pack (capacity 100Ah, supports 12V / 24V output) and a charging management module. The charging management module is connected to the main power unit and automatically charges the lithium battery pack when the main power supply is on. When the mains power is interrupted, the charging management module automatically switches to the lithium battery pack for power supply.

[0026] The workflow of this embodiment is as follows: In a normal scenario (wired transmission): the control terminal generates an audio signal, which is encoded and noise-reduced by the audio processing unit, and then transmitted to each speaker terminal via the Ethernet link of the wired transmission unit. After the audio decoding unit decodes the signal, the speaker terminal plays the audio. At the same time, the control terminal issues control commands to the auxiliary equipment, and the switch control unit controls the on / off state of the auxiliary equipment group to achieve coordinated management and control.

[0027] Wired fault scenario (wireless switching): When the switching control unit detects an interruption in the wired link signal, it automatically triggers a switching command. The speaker terminal switches to wireless receiving mode, and the audio signal from the control end is transmitted to the speaker terminal through the 4G wireless terminal and wireless communication antenna, ensuring uninterrupted audio playback.

[0028] Power outage scenario (backup power supply): When the mains power is interrupted, the charging management module of the backup power unit switches to lithium battery pack power supply to provide backup power to all power supply objects of the main power unit, ensuring the normal operation of the control terminal, transmission module, audio terminal and auxiliary management module, and meeting the emergency broadcasting needs.

[0029] Therefore, the network audio broadcasting system of this utility model adopts the above structure, which improves the system's flexibility, stability and scene adaptability by constructing a multi-link transmission architecture and integrating device linkage control functions.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A network audio broadcasting system, characterized in that: Includes a control terminal, transmission module, audio terminal group, auxiliary management and control module, and power supply module; The power supply module includes a main power supply unit and a backup power supply unit. The main power supply unit is electrically connected to the control terminal, the transmission module, the audio terminal group and the auxiliary management module, respectively, and is used to provide the main power supply. The backup power unit is connected to the main power unit and is electrically connected to the control terminal, transmission module, audio terminal group and auxiliary management module respectively, to provide backup power when the main power unit fails; The control unit includes a server and a sub-control center. The server and the sub-control center communicate with each other and are used to generate audio signals and control commands. The transmission module includes a wired transmission unit and a wireless transmission unit. The wired transmission unit is wired to the server, the sub-control center and the audio terminal group respectively, and is used to transmit wired audio signals. The wireless transmission unit includes a 4G wireless terminal and a wireless communication antenna. The 4G wireless terminal is wirelessly connected to the server, the sub-control center and the audio terminal group respectively. The wireless communication antenna is connected to the 4G wireless terminal and is used to transmit wireless audio signals. The audio terminal group includes several speaker terminals, each of which is communicatively connected to a wired transmission unit and a wireless transmission unit to receive and play audio signals. The auxiliary control module includes a switch control unit and an auxiliary equipment group. The switch control unit is connected to the server and the sub-control center for communication. The auxiliary equipment group includes several auxiliary control devices, each of which is electrically connected to the switch control unit. The switch control unit is used to receive control commands from the control terminal and control the on / off state of the auxiliary control devices.

2. The network audio broadcasting system according to claim 1, characterized in that: The wired transmission unit includes an RJ45 network port and an Ethernet switch. The RJ45 network ports are respectively set on the server, the control center and the speaker terminal. The Ethernet switch is connected to each RJ45 network port through network cables to form a wired transmission link.

3. The network audio broadcasting system according to claim 1, characterized in that: The 4G wireless terminal integrates a 4G communication module, which is connected to the wireless communication antenna signal for receiving and transmitting 4G wireless signals; the speaker terminal has a built-in wireless receiving module, which is matched with the 4G wireless terminal for receiving wireless audio signals.

4. The network audio broadcasting system according to claim 1, characterized in that: The auxiliary control equipment includes lighting equipment, display equipment, and alarm equipment. The switch control unit includes relay modules. The control terminal of the relay module is connected to the server and the sub-control center for communication. The output terminal of the relay module is electrically connected to each auxiliary control device.

5. A network audio broadcasting system according to claim 1, characterized in that: The control unit also includes an audio processing unit, which is connected to the server and the sub-control center to encode, reduce noise, and adjust the gain of the audio signal.

6. A network audio broadcasting system according to claim 1, characterized in that: The audio terminal group also includes an audio decoding unit, which is connected to the wired transmission unit, the wireless transmission unit and the speaker terminal respectively, and is used to decode the received audio signal and transmit it to the speaker terminal.

7. A network audio broadcasting system according to claim 1, characterized in that: The main power supply unit of the power supply module includes an AC power interface and an AC / DC converter. The AC power interface is used to connect to 220V AC power, and the AC / DC converter is connected to the AC power interface to convert AC power into DC power required by each module. The backup power supply unit includes a lithium battery pack and a charging management module. The charging management module is connected to the main power supply unit and is used to charge the lithium battery pack when the main power supply unit is supplying power.

8. A network audio broadcasting system according to claim 1, characterized in that: It also includes a switching control unit, which is connected to the wired transmission unit, the wireless transmission unit and the speaker terminal respectively. It is used to detect the connection status of the wired transmission link. When the wired transmission link is interrupted, it automatically switches to the wireless transmission link to transmit audio signals.

9. A network audio broadcasting system according to claim 8, characterized in that: The switching control unit has a built-in signal detection module and a switching logic module. The signal detection module is used to detect the strength and continuity of the wired audio signal in real time, and the switching logic module is used to trigger link switching based on the detection results.

10. A network audio broadcasting system according to claim 9, characterized in that: The sub-control center includes a human-machine interaction unit, which consists of a touch screen and physical buttons for manual input of control commands and adjustment of audio parameters.

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