Active audio control unit

Abstract

The utility model discloses an active audio control unit, which belongs to the technical field of Chinese civil aviation low-altitude communication, and comprises an active audio control mainboard assembly and a plurality of audio control IO board assemblies, and the plurality of audio control IO board assemblies are connected with the active audio control mainboard assembly. The active audio control mainboard assembly comprises a parameter setting assembly, a communication assembly, a direct current acquisition module, an alternating current acquisition module, a conversion module and a main control chip. Through the mode, when all external power supplies are powered off and a system cannot run, the audio switching circuit can ensure that audio signals are not interrupted, and the audio signals are skipped through the audio amplification and adjustment circuit to ensure that the audio signals are not interrupted; the equipment can be remotely controlled, the use condition of the equipment can be monitored when the equipment is used in a far-end station, and meanwhile far-end equipment can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of Chinese civil aviation low-altitude communication technology, and specifically relates to an active audio control unit. BACKGROUND

[0002] An audio distributor is a device used to distribute audio signals from a source device (such as an audio player, mixing console or audio amplifier) to multiple speakers or audio output devices. Its main function is to copy and transmit audio signals to different areas or rooms to achieve multi-area audio playback or broadcasting.

[0003] Chinese patent CN219269061U discloses an audio distributor, comprising: a port conversion circuit, a plurality of input terminals are connected in parallel at the port conversion circuit; a power amplifier circuit, which filters out noise other than sound signals and amplifies sound signals; a digital mixing filter, which mixes and processes sound data signals and filters out differential signals of different frequencies; an audio processor, which automatically compresses and processes the sound frequency of the integrated sound signal and changes the audio output effect; the port conversion circuit, the power amplifier circuit, the digital mixing filter and the audio processor are electrically connected in sequence.

[0004] However, this patent cannot realize personalized adjustment of signal strength, resulting in different devices cannot be connected at the same time, poor compatibility, and cannot realize remote monitoring function, when used in remote station, cannot monitor the use of the device, also cannot adjust the remote device.

[0005] Therefore, the utility model designs an active audio control unit to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides an active audio control unit.

[0007] To achieve the above purpose, the utility model realizes the following technical scheme:

[0008] The active audio control unit comprises an active audio control mainboard assembly and a plurality of audio control IO board assemblies.

[0009] The plurality of audio control IO board assemblies are connected with the active audio control mainboard assembly.

[0010] The active audio control mainboard assembly comprises a parameter setting component for setting or inquiring parameters, a communication component for monitoring and configuring system parameters to the plurality of audio control IO board components in real time, a direct current acquisition module for acquiring external AC power voltage, an alternating current acquisition module for acquiring external AC power voltage, a conversion module for converting AC voltage into direct current voltage, and a main control chip for completing data exchange and processing of the overall system, the parameter setting component and the communication component are connected with the main control chip, the direct current acquisition module, the alternating current acquisition module and the conversion module are electrically connected with the main control chip, the communication component is connected with the audio control IO board components, and the plurality of audio control IO board components are connected with the conversion module.

[0011] Further, the parameter setting component comprises an interface module for connecting an external PC or a network switch, a liquid crystal display and an input module for manually setting parameters or inquiring parameters, the interface module, the input module and the liquid crystal display are electrically connected with the main control chip.

[0012] Further, the communication component comprises a first communication module, a second communication module, a third communication module and a fourth communication module, the first communication module, the second communication module, the third communication module and the fourth communication module are used for configuring system parameters to the audio control IO board components in real time and monitoring the running state of the audio control IO board components in real time, and the first communication module, the second communication module, the third communication module and the fourth communication module are electrically connected with the main control chip.

[0013] Further, the first communication module, the second communication module, the third communication module and the fourth communication module are matched with one audio control IO board component.

[0014] Further, the audio control IO board component comprises a slave control chip, a plurality of slave audio interface modules and a main audio interface module for receiving or sending analog audio signals, an audio isolation transformer for isolating electrical connection between audio circuits and eliminating noise and interference, an audio switching circuit for ensuring that the audio signal is not interrupted, and an audio amplification adjustment circuit for adjusting the gain of the amplification circuit, the audio amplification adjustment circuit is electrically connected with the slave control chip, the audio switching circuit and the main audio interface module are electrically connected with the audio amplification adjustment circuit, the audio switching circuit is electrically connected with the audio isolation transformer, and the audio isolation transformer and the plurality of slave audio interface modules are electrically connected.

[0015] Further, the first communication module and the conversion module are electrically connected with the slave control chip.

[0016] Further, the main control chip and the slave control chip are selected from ARM32 series chips.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The interface module is connected with the PC or network switch outside, a browser can be opened on the PC, parameters of the system are set or each parameter is inquired by inputting the Web interface IP address of the interface module in an address bar, the device can be remotely controlled through the corresponding microcomputer software or protocol installed on the PC, when the device is used in a remote station, the use condition of the device can be monitored, the remote device can be adjusted, the system menu can be entered through the input module and the corresponding parameter is set or each parameter is inquired according to the prompt of the liquid crystal screen, the utility model supports the input of multiple power supplies at the same time, when the main power supply is powered off, the system is automatically switched to the standby power supply, the stable and reliable operation of the system is ensured, the voltage of the external power supply is collected in real time through the DC collection module and the AC collection module, when the external power supply is powered off, the system can remind in the background, and the power supply voltage of the external power supply can be inquired through the Web interface;

[0019] The utility model discloses a first communication module, second communication module, third communication module and fourth communication module realize the communication between main control chip and slave control chip, receive the configuration information that main control chip sent, return the relevant information of slave control chip to main control chip simultaneously, and the analog audio signal is received or sent to each way's audio signal through multi -way slave audio interface module and main audio interface module, and each way's audio signal will pass through audio isolation transformer, and the electrical connection between audio circuit is isolated to audio isolation transformer, and when the electrical connection exists between audio equipment, the current noise can be transmitted between them and cause the interference, and the electrical connection can be isolated and the noise and interference can be eliminated using audio isolation transformer.

[0020] The utility model discloses audio switching circuit main component is relay, when all power supply outside is powered off, and the system has been unable to run, and audio switching circuit can ensure that audio signal is not interrupted, and audio signal is jumped over audio amplification adjustment circuit, and it is ensured that audio signal is not interrupted.

[0021] The utility model discloses audio amplification adjustment circuit is using digital potentiometer to adjust the gain of its amplification circuit, and digital potentiometer adopts I2C communication mode and slave control chip communication to satisfy the different audio signal requirement of civil aviation equipment, and the practicality is high. ACCURACY

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduce. Obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0023] Fig. 1This is a block diagram of the active audio control motherboard assembly of the active audio control unit of this utility model;

[0024] Fig. 2 This is a block diagram showing the connection between the active audio control motherboard assembly and the audio control I / O board assembly of the active audio control unit of this utility model.

[0025] The labels in the diagram represent:

[0026] 1. Main control chip; 2. DC acquisition module; 3. AC acquisition module; 4. Interface module; 5. Input module; 6. Conversion module; 7. LCD display; 8. First communication module; 9. Second communication module; 10. Third communication module; 11. Fourth communication module; 12. Slave control chip; 13. Multi-channel slave audio interface module; 14. Audio isolation transformer; 15. Audio switching circuit; 16. Audio amplification and adjustment circuit; 17. Main audio interface module. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] In some embodiments, please refer to the appendix to the instruction manual. Figs. 1-2 Active audio control unit;

[0030] It includes an active audio control motherboard assembly and multiple audio control I / O board assemblies, all of which are connected to the active audio control motherboard assembly;

[0031] The active audio control motherboard assembly includes a parameter setting component for setting or querying parameters, a communication component for real-time monitoring and configuring system parameters onto multiple audio control I / O board assemblies, a DC acquisition module 2 for acquiring DC voltage from an external power supply, an AC acquisition module 3 for acquiring AC voltage from an external power supply, a conversion module 6 for converting AC voltage to DC voltage, and a main control chip 1 for completing data exchange and processing of the overall system. The parameter setting component and the communication component are both connected to the main control chip 1. The DC acquisition module 2, the AC acquisition module 3, and the conversion module 6 are all electrically connected to the main control chip 1. The communication component is connected to the audio control I / O board assemblies, and the multiple audio control I / O board assemblies are all connected to the conversion module 6.

[0032] The parameter setting component includes an interface module 4 for connecting an external PC or network switch, a liquid crystal display 7, and an input module 5 for manually setting parameters or inquiring parameters, and the interface module 4, the input module 5, and the liquid crystal display 7 are electrically connected with the main control chip 1.

[0033] The communication component includes a first communication module 8, a second communication module 9, a third communication module 10, and a fourth communication module 11, and the first communication module 8, the second communication module 9, the third communication module 10, and the fourth communication module 11 are used for real-time configuration of system parameters to an audio control IO board component and real-time monitoring of the running state of the audio control IO board component, and the first communication module 8, the second communication module 9, the third communication module 10, and the fourth communication module 11 are electrically connected with the main control chip 1.

[0034] The first communication module 8, the second communication module 9, the third communication module 10, and the fourth communication module 11 are matched with one audio control IO board component.

[0035] The interface module 4 is connected with an external PC or network switch, a browser can be opened on the PC, parameters of the system can be set or each parameter can be inquired by inputting an IP address of a Web interface of the interface module 4 in an address bar, the device can be remotely controlled through corresponding computer software or protocols installed on the PC, when used at a remote station, the device usage can be monitored, and the remote device can be adjusted, the system menu can be entered through the input module 5, and corresponding parameters can be set or each parameter can be inquired according to prompts of the liquid crystal screen, the utility model supports simultaneous input of multiple power supplies, when the main power supply is powered off, the system will automatically switch to a standby power supply, ensuring stable and reliable operation of the system, and through the DC acquisition module 2 and the AC acquisition module 3, the voltage of an external power supply can be acquired in real time, when the external power supply is powered off, the system will remind in the background, and the power supply voltage of the external power supply can also be inquired through the Web interface.

[0036] Taking the audio control IO board component connected with the first communication module 8 as an example, the audio control IO board component includes a slave control chip 12, a plurality of slave audio interface modules 13 and a master audio interface module 17 for receiving or sending analog audio signals, an audio isolation transformer 14 for isolating electrical connection between audio circuits and eliminating noise and interference, an audio switching circuit 15 for ensuring uninterrupted audio signals, and an audio amplification adjustment circuit 16 for adjusting the gain of an amplification circuit, the audio amplification adjustment circuit 16 is electrically connected with the slave control chip 12, the audio switching circuit 15 and the master audio interface module 17 are electrically connected with the audio amplification adjustment circuit 16, the audio switching circuit 15 is electrically connected with the audio isolation transformer 14, and the audio isolation transformer 14 is electrically connected with the plurality of slave audio interface modules 13.

[0037] The first communication module 8 and the conversion module 6 are electrically connected with the slave chip 12.

[0038] Preferably, the master chip 1 and the slave chip 12 are both selected from ARM32 series chips.

[0039] The communication between the master chip 1 and the slave chip 12 is realized through the first communication module 8, the second communication module 9, the third communication module 10 and the fourth communication module 11, the configuration information sent by the master chip 1 is received, and the information related to the slave chip 12 is returned to the master chip 1, the analog audio signals are received or sent by the multi-path slave audio interface module 13 and the master audio interface module 17, and the audio signals of each path pass through the audio isolation transformer 14.

[0040] The main element of the audio switching circuit 15 is a relay, when all external power supplies are powered off and the system cannot run, the audio switching circuit 15 can ensure that the audio signal is not interrupted, and the audio signal is jumped over the audio amplification adjustment circuit 16 to ensure that the audio signal is not interrupted.

[0041] The audio amplification adjustment circuit 16 is a digital potentiometer for adjusting the gain of the amplification circuit, the digital potentiometer communicates with the slave chip 12 in an I2C communication mode to meet the requirements of civil aviation equipment on different audio signals, and the practicability is high.

[0042] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An active audio control unit, characterized in that: it comprises an active audio control mainboard assembly and a plurality of audio control IO board assemblies, the plurality of audio control IO board assemblies are connected with the active audio control mainboard assembly; the active audio control mainboard assembly comprises a parameter setting assembly for setting or inquiring parameters, a communication assembly for monitoring and configuring system parameters to the plurality of audio control IO board assemblies in real time, a direct current acquisition module for acquiring external AC power voltage, an alternating current acquisition module for acquiring external AC power voltage, a conversion module for converting AC voltage into DC voltage, and a master control chip for completing data exchange and processing of the overall system, the parameter setting assembly and the communication assembly are connected with the master control chip, the direct current acquisition module, the alternating current acquisition module and the conversion module are electrically connected with the master control chip, the communication assembly is connected with the audio control IO board assembly, and the plurality of audio control IO board assemblies are connected with the conversion module.

2. The active audio control unit of claim 1, wherein, the parameter setting assembly comprises an interface module for connecting external PC or network switch, a liquid crystal display and an input module for manually setting parameters or inquiring parameters, the interface module, the input module and the liquid crystal display are electrically connected with the master control chip.

3. The active audio control unit of claim 2, wherein, the communication assembly comprises a first communication module, a second communication module, a third communication module and a fourth communication module, the first communication module, the second communication module, the third communication module and the fourth communication module are used for configuring system parameters to the audio control IO board assembly in real time and monitoring the running state of the audio control IO board assembly in real time, and the first communication module, the second communication module, the third communication module and the fourth communication module are electrically connected with the master control chip.

4. The active audio control unit of claim 3, wherein, The first communication module, the second communication module, the third communication module and the fourth communication module are matched with one audio control IO board assembly.

5. The active audio control unit of claim 4, wherein, the audio control IO board assembly comprises a slave control chip, a plurality of slave audio interface modules and a main audio interface module for receiving or sending analog audio signals, an audio isolation transformer for isolating electrical connection between audio circuits and eliminating noise and interference, an audio switching circuit for ensuring uninterrupted audio signals, and an audio amplification adjustment circuit for adjusting the gain of its amplification circuit, the audio amplification adjustment circuit is electrically connected with the slave control chip, the audio switching circuit and the main audio interface module are electrically connected with the audio amplification adjustment circuit, the audio switching circuit is electrically connected with the audio isolation transformer, and the audio isolation transformer and the plurality of slave audio interface modules are electrically connected.

6. The active audio control unit of claim 5, wherein, The first communication module and the conversion module are electrically connected with the slave control chip.

7. The active audio control unit of claim 6, wherein, The master control chip and the slave control chip are selected from ARM32 series chips.

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