High-frequency enhanced road broadcast all-in-one machine

Abstract

The utility model discloses a high-frequency enhanced road broadcast all-in-one machine, which comprises a network transmission module, a storage module, an audio processing module and an audio coding and decoding module, and is characterized in that the network transmission module is used for receiving audio data and transmitting the audio data to the audio processing module; the output end of the network transmission module is connected with the first input end of the audio processing module through an ETH interface. The audio processing module is used for carrying out amplitude amplification and high pitch processing on audio data, a first output end of the audio processing module is connected with a first input end of the audio encoding and decoding module through an SPI interface, and a second output end of the audio processing module is connected with an input end of the storage module through an SPI interface; the storage module is used for storing the basic information of the all-in-one machine and the processed audio data, and the output end of the storage module is connected with the second input end of the audio encoding and decoding module. According to the utility model, the broadcast sound is loud, the penetrability is strong, the transmission distance is long, the coverage range is wide, and the real-time transmission of information is realized.

Description

Technical Field

[0001] The utility model relates to the field of control technology, and more specifically, to a high-frequency enhanced highway broadcasting integrated machine. Background Art

[0002] Highway broadcasting equipment is a special communication device for highway traffic management and an important means of traffic information broadcasting. Highway broadcasting equipment is installed along the highway, in tunnels, bridges, ramps and other key sections. It is used to release important information such as road conditions, traffic control and safety warnings on a daily basis. In emergency situations such as traffic accidents and sudden fires on highways, highway broadcasting equipment is used to direct evacuation and warn road users.

[0003] my country is a transportation powerhouse, and highways are developing rapidly. Highway management is a systematic and huge project, especially in terms of highway operation and emergency response. As an important means of daily highway operation and emergency dispatch command, the effectiveness of highway broadcasting is particularly important. The noise from vehicles on highways is very loud. Due to the progress of the automobile industry, the sound insulation effect is getting better and better, which greatly reduces the effectiveness of the current broadcast content transmission. Most highway broadcasts cannot make the passengers in the car hear the complete broadcast content clearly, which affects the effective transmission of high-speed broadcast content. Utility Model Content

[0004] The utility model provides a high-frequency enhanced highway broadcasting integrated machine to solve at least one of the problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The first aspect of the utility model provides a high-frequency enhanced highway broadcasting integrated machine, which includes a network transmission module, a storage module, an audio processing module and an audio encoding and decoding module.

[0007] The network transmission module is used to receive audio data and transmit the audio data to the audio processing module, and the output end of the network transmission module is connected to the first input end of the audio processing module through the ETH interface;

[0008] The audio processing module is used to perform amplitude amplification and high-pitched processing on audio data, the first output end of the audio processing module is connected to the first input end of the audio codec module through the SPI interface, and the second output end of the audio processing module is connected to the input end of the storage module through the SPI interface;

[0009] The storage module is used to store basic information of the all-in-one machine and processed audio data, and the output end of the storage module is connected to the second input end of the audio codec module.

[0010] Optionally, the audio processing module includes an amplitude amplification module and a treble processing module.

[0011] The amplitude amplification module is used to amplify high-frequency audio data and filter out low-frequency audio data, and the output end of the amplitude amplification module is connected to the input end of the high-frequency processing module through an IO interface;

[0012] The treble processing module is used to increase the gain of the audio. The output end of the treble processing module is connected to the second input end of the audio processing module through the SPI2 interface to transmit the processed audio data to the audio processing module.

[0013] Optionally, the all-in-one machine further includes a first audio output interface, which transmits the audio data decoded by the audio codec module to an external power amplifier module for broadcasting, and the audio codec module is connected to the external power amplifier module through the first audio output interface.

[0014] Optionally, the all-in-one machine also includes a second audio output interface, which transmits the audio data processed by the audio codec module to the built-in power amplifier module for broadcasting, and the audio codec module is connected to the built-in power amplifier module through the second audio output interface.

[0015] Optionally, the network transmission module adopts RK3188 chip.

[0016] Optionally, the storage module adopts a W25Q16JVUXIQ chip, and its interface type is an SPI interface.

[0017] Optionally, the audio codec module adopts a WM8976G audio chip and transmits audio data via an IIS bus.

[0018] Optionally, the amplitude amplification module adopts a WT588D-20SS voice chip and outputs audio data through a DAC interface.

[0019] Optionally, the treble processing module adopts a W25Q64 chip, and its interface type is an SPI interface.

[0020] The second aspect of the utility model provides a high-frequency enhanced highway broadcasting integrated machine system, the system comprises the high-frequency enhanced highway broadcasting integrated machine as described above, a human-computer interaction device and an external power amplifier module, wherein:

[0021] The human-computer interaction device is used to send a broadcast request in response to a user's operation and send audio data to the high-frequency enhanced highway broadcasting integrated machine, and the human-computer interaction device is connected to the high-frequency enhanced highway broadcasting integrated machine through a network;

[0022] The external power amplifier module is used to amplify audio data, and the external power amplifier module is connected to the high-frequency enhanced highway broadcasting integrated machine via a third audio output interface.

[0023] The beneficial effects of the utility model are as follows:

[0024] The utility model adopts Ethernet transmission, responds to the broadcast request issued by the external human-computer interaction device of the management center, receives the audio data sent by the human-computer interaction device, and increases the sound gain and enhances the high frequency through the audio processing module, so as to achieve loud broadcast sound, strong penetration, long transmission distance and wide coverage; the high frequency of sound is improved by the audio processing module, the price is low and the applicability is wide; the utility model can realize the real-time transmission of information and can transmit the information to the designated target in the shortest time; it supports multiple audio formats and variable coding audio; the utility model can store local sound sources and broadcast independently. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0026] Figure 1 The schematic diagram of the structure of the high-frequency enhanced highway broadcasting integrated machine of the utility model is shown;

[0027] Figure 2 The circuit connection diagram of the utility model high frequency enhanced highway broadcasting integrated machine is shown;

[0028] Figure 3 The circuit schematic diagram of the high-frequency enhanced highway broadcasting integrated machine network module is shown;

[0029] Figure 4 The circuit schematic diagram of the storage module of the high-frequency enhanced highway broadcasting integrated machine is shown;

[0030] Figure 5 The circuit schematic diagram of the amplitude amplification module of the high-frequency enhanced highway broadcasting integrated machine is shown;

[0031] Figure 6 The circuit schematic diagram of the high-frequency enhanced highway broadcasting integrated machine treble processing module is shown;

[0032] Figure 7 The circuit schematic diagram of the high-frequency enhanced highway broadcasting integrated machine audio codec module is shown;

[0033] Figure 8 A schematic diagram of the high-frequency enhanced highway broadcasting integrated system of the utility model is shown. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the utility model, the utility model is further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the utility model.

[0035] like Figure 1 As shown, the first aspect of the utility model provides a high-frequency enhanced highway broadcasting integrated machine, the broadcasting mode of the integrated machine includes local broadcasting, manual broadcasting and file broadcasting. The integrated machine includes a network transmission module 10, a storage module 40, an audio processing module 20 and an audio codec module 30, wherein:

[0036] The network transmission module 10 is used to receive audio data and transmit the audio data to the audio processing module 20. The output end of the network transmission module 10 is connected to the first input end of the audio processing module 20 through the ETH interface; the audio processing module 20 is used as the core module of the audio processing of the high-frequency enhanced highway broadcasting all-in-one machine, and is used to control the audio processing flow, and perform amplitude amplification and high-pitched processing on the audio data. The first output end of the audio processing module 20 is connected to the first input end of the audio codec module 30 through the SPI interface, and the second output end of the audio processing module 20 is connected to the input end of the storage module 40 through the SPI interface; the storage module 40 is used to store the basic information of the all-in-one machine and the processed audio data, and the output end of the storage module 40 is connected to the second input end of the audio codec module 30; the audio codec module 30 is used as the core processing module of the codec, and is used to decode and encode audio data in multiple formats.

[0037] The audio processing module 20 includes an amplitude expansion module 201 and a treble processing module 202, wherein the amplitude expansion module 201 is used to expand high-frequency audio data and filter out low-frequency audio data, and the output end of the amplitude expansion module 201 is connected to the input end of the treble processing module 202 through an IO interface;

[0038] The treble processing module 202 is used to increase the gain of the audio. The output end of the treble processing module 202 is connected to the second input end of the audio processing module 20 via the SPI2 interface to transmit the processed audio data to the audio processing module 20 .

[0039] The received audio data is judged by the audio processing module 20 to determine whether the processed audio data is a local broadcast. If the audio data is a local broadcast, the audio data processed by the treble processing module 202 is input to the storage module 40 via the second output end of the audio processing module 20; if the audio data is not a local broadcast, the audio data processed by the treble processing module 202 is input to the audio codec module 30 via the first output end of the audio processing module 20.

[0040] The high-frequency enhanced highway broadcasting integrated machine also includes a first audio output interface, which transmits the audio data decoded by the audio codec module 30 to the external power amplifier module for broadcasting. The audio codec module 30 is connected to the external power amplifier module through the first audio output interface.

[0041] The high-frequency enhanced highway broadcasting integrated machine also includes a second audio output interface and a built-in power amplifier module 50. The built-in power amplifier module 50 is connected to the audio codec module 30 via the second audio output interface. If the high-frequency enhanced highway broadcasting integrated machine is not connected to an external power amplifier module, the audio data decoded by the audio codec module 30 is transmitted to the built-in power amplifier module 50 for broadcasting.

[0042] The high-frequency enhanced highway broadcasting integrated machine receives the audio data transmitted by the external human-computer interaction device through the network transmission module 10 and transmits it to the audio processing module 20. The audio processing module first calls the amplitude expansion module 201 to expand the amplitude, filters the low-frequency audio data, and then calls the treble processing module 202 to expand the sound; then the audio processing module 20 determines whether the audio data processed by the treble processing module 202 is a local broadcast. If it is a local broadcast, the processed audio data is stored in the storage module 40; if it is not a local broadcast, the processed audio is output to the audio codec module 30 for decoding and re-encoding operations. The all-in-one machine establishes a connection with the external control software through the network transmission module 10, sends the audio data read by the external control software to the network transmission module 10 in real time, receives the audio data through the network transmission module 10, and transmits the data to the audio processing module 20 through the ETH interface. The audio processing module 20 amplifies the left and right channels of the audio data to 110db respectively through the amplitude expansion module 201, filters out the low-frequency sound data, increases the gain of the audio data through the treble processing module 202, amplifies the sound again, and retains the audio data in the 2000-8000K frequency band, thereby forming a section of high-frequency and treble-penetrating audio data.

[0043] The local broadcast relies on the storage unit of the high-frequency enhanced highway broadcasting integrated machine to pre-store the audio for daily use scenarios and emergency situations. If the audio processing module 20 determines that the audio data processed by the high-frequency processing module 202 is a local broadcast, the audio data is stored in the storage module 40 through the second output end of the audio processing module 20. After the local broadcast is started, the audio data is directly read from the storage module 40, and the audio data is transmitted to the audio codec module 30, which converts the audio data into a PCM code stream and outputs it to the external power amplifier module for broadcasting.

[0044] The audio data read from the storage module 40 may be audio such as alarm sounds, fire warning sounds, construction prompt sounds, and road condition information.

[0045] File broadcasting requires the high-frequency enhanced highway broadcasting integrated machine to respond to external broadcasting requests, receive external audio data, and broadcast the audio data after processing it through the high-frequency enhanced highway broadcasting integrated machine.

[0046] In a specific embodiment, if the broadcasting mode of the high-frequency enhanced highway broadcasting integrated machine is file broadcasting, the external audio data is received in real time through the network transmission module 10, and the audio data is transmitted to the audio processing module 20. The audio processing module 20 calls the amplitude expansion module 201 to expand the high-frequency audio data, filters the low-frequency audio data, and then calls the treble processing module 202 to increase the gain of the audio data sound. The audio data processed by the treble processing module 202 is transmitted to the audio processing module 20, and the audio processing module 20 transmits it to the audio codec module 30. The audio codec module 30 decodes the received multi-format audio data, unpacks the audio and decodes it frame by frame, converts it into an 8K 16bit PCM code stream and outputs it to the external power amplifier module, and then broadcasts it after amplification by the external power amplifier module.

[0047] Manual broadcasting relies on a network microphone or a sound card microphone to collect sound, and the audio processing module 20 is also required to recognize the human voice.

[0048] In a specific embodiment, if the broadcasting mode of the high-frequency enhanced highway broadcasting integrated machine is manual broadcasting, this embodiment uses dual microphones for sound collection, the first microphone collects human voices, and the second microphone collects background sounds outside a preset distance. The human voice collected by the first microphone is input into the audio processing module 20 through the second input end of the audio processing module 20. The audio processing module compares the sounds collected by the dual microphones, and filters out the parts of the first microphone that are similar to the background sounds collected by the second microphone, thereby forming broadcast source data with human voice as the main component. The broadcast source data with the background sound filtered is transmitted to the audio codec module 30 through the audio processing module 20. The audio codec module 30 decodes the received multi-format audio data, unpacks the audio and decodes it frame by frame, converts it into an 8K 16bit PCM code stream and outputs it to the external power amplifier module, and broadcasts it after amplification by the external power amplifier module.

[0049] Figure 2 This is the circuit connection diagram of the high-frequency enhanced highway broadcasting all-in-one machine. Figure 3-7 They are the circuit schematics of each module of the high-frequency enhanced highway broadcasting all-in-one machine.

[0050] like Figure 3 As shown, the network transmission module uses the RK3188 chip.

[0051] like Figure 4 As shown, the storage module uses the W25Q16JVUXIQ chip, and its interface type is the SPI interface; The pin is the chip select pin, the CLK pin is the serial clock input pin, the DI_IO0 pin is the data input pin, and the DO_IO1 pin is the data output pin. The pin is a write protection input pin. The pin is a hold request signal pin.

[0052] like Figure 5 As shown in the figure, the amplitude expansion module adopts the WT588D-20SS voice chip and outputs audio data through the DAC interface; among them, the Flash_DO pin is the data output pin, the Flash_DI pin is the data input pin, the Flash_CS is the chip select pin, the Flash_CLK pin is the clock pin, the VOICE_K1 is a button, the VOICE_DATA pin is a three-wire data input pin, the VOICE_CS pin is a three-wire chip select input pin, the VOICE_CLK pin is a three-wire clock pin, the DAC pin is the audio output port, and the V_RST pin is the reset pin.

[0053] like Figure 6 As shown, the treble processing module adopts the W25Q64 chip, and its interface type is the SPI interface; among them, F_CS is the chip select pin, the SPI2_MISO pin is the serial data output pin, the SPI2_SCK pin is the serial clock pin, and the SPI2_MOSI pin is the serial data input pin.

[0054] like Figure 7 As shown, the audio codec module uses the WM8976G audio chip and transmits through the IIS bus; it is controlled by three data lines: L3MODE, L3CLOCK and L3DATA.

[0055] On the other hand, the utility model also provides a high-frequency enhanced highway broadcasting integrated machine system, which includes the high-frequency enhanced highway broadcasting integrated machine as described above, a human-computer interaction device and an external power amplifier module, wherein:

[0056] The human-computer interaction device is used to send a broadcast request in response to a user's operation and send audio data to the high-frequency enhanced highway broadcasting integrated machine. The human-computer interaction device is connected to the high-frequency enhanced highway broadcasting integrated machine via a network, and the network is preferably a wireless network;

[0057] The external power amplifier module is used to amplify the audio data. The external power amplifier module is connected to the high-frequency enhanced highway broadcasting integrated machine through the third audio output interface, wherein the third audio output interface is the same as the first audio output interface, and the audio data processed by the high-frequency enhanced highway broadcasting integrated machine is transmitted to the external power amplifier module for broadcasting.

[0058] Figure 8 This is a schematic diagram of the high-frequency enhanced highway broadcasting integrated machine system. The command center sends a broadcast request through the human-computer interaction device. The high-frequency enhanced highway broadcasting integrated machine responds to the request and establishes a connection with the human-computer interaction device. The human-computer interaction device reads the audio data to be broadcast and sends the audio data to the high-frequency enhanced highway broadcasting integrated machine in real time. After being processed by the high-frequency enhanced highway broadcasting integrated machine, the audio data is output to the built-in power amplifier module or the external power amplifier module for broadcasting.

[0059] Features and advantages of this utility model:

[0060] 1. The high-frequency enhanced highway broadcasting integrated machine adopts digital signal processing to achieve directional transmission, strong sound penetration, long transmission distance and wide coverage;

[0061] 2. Low cost. The audio processing module can improve the high frequency of the sound. Compared with increasing the power of the amplifier and speaker, it has low price and wide applicability.

[0062] 3. High real-time performance. High-frequency enhanced highway broadcasting integrated machine can realize real-time transmission of information and can deliver information to the designated target in the shortest time;

[0063] 4. Support multiple audio formats and variable encoding audio.

[0064] The utility model solves the defects of low sound, weak penetration and unclear broadcast content in motor vehicles in existing highway broadcasts. The utility model uses advanced processors to process audio data in real time and at high speed, which not only maintains the real-time nature of the broadcast, but also filters out low-frequency sounds and enhances high-frequency sounds, making the sound transmitted by the broadcast high-pitched, long-distance transmission and strong penetration, solving the problem of poor listening effect of the broadcast due to good sound insulation effect in motor vehicles.

[0065] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0066] It should also be noted that, in the description of the present utility model, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A high-frequency enhanced highway broadcasting integrated machine, characterized in that: The all-in-one machine includes a network transmission module, a storage module, an audio processing module and an audio encoding and decoding module. The network transmission module is used to receive audio data and transmit the audio data to the audio processing module, and the output end of the network transmission module is connected to the first input end of the audio processing module through the ETH interface; The audio processing module is used to perform amplitude amplification and high-pitched processing on audio data, the first output end of the audio processing module is connected to the first input end of the audio codec module through the SPI interface, and the second output end of the audio processing module is connected to the input end of the storage module through the SPI interface; The storage module is used to store basic information of the all-in-one machine and processed audio data, and the output end of the storage module is connected to the second input end of the audio codec module.

2. The all-in-one machine according to claim 1, characterized in that: The audio processing module includes an amplitude expansion module and a treble processing module. The amplitude amplification module is used to amplify high-frequency audio data and filter out low-frequency audio data, and the output end of the amplitude amplification module is connected to the input end of the high-frequency processing module through an IO interface; The treble processing module is used to increase the gain of the audio. The output end of the treble processing module is connected to the second input end of the audio processing module through the SPI2 interface to transmit the processed audio data to the audio processing module.

3. The all-in-one machine according to claim 1, characterized in that: The integrated machine also includes a first audio output interface, which transmits the audio data decoded by the audio codec module to the external power amplifier module for broadcasting, and the audio codec module is connected to the external power amplifier module through the first audio output interface.

4. The all-in-one machine according to claim 1, characterized in that: The all-in-one machine also includes a second audio output interface, which transmits the audio data processed by the audio codec module to the built-in power amplifier module for broadcasting. The audio codec module is connected to the built-in power amplifier module through the second audio output interface.

5. The all-in-one machine according to claim 1, characterized in that: The network transmission module adopts RK3188 chip.

6. The all-in-one machine according to claim 1, characterized in that: The storage module adopts a W25Q16JVUXIQ chip, and its interface type is an SPI interface.

7. The all-in-one machine according to claim 1, characterized in that: The audio processing module adopts WM8976G audio chip and transmits audio data through IIS bus.

8. The all-in-one machine according to claim 2, characterized in that: The amplitude amplification module adopts the WT588D-20SS voice chip and outputs audio data through the DAC interface.

9. The all-in-one machine according to claim 2, characterized in that: The treble processing module adopts the W25Q64 chip, and its interface type is SPI interface.

10. A high-frequency enhanced highway broadcasting integrated system, characterized in that: The system comprises a high-frequency enhanced highway broadcasting integrated machine, a human-computer interaction device and an external power amplifier module as described in any one of claims 1 to 9, wherein: The human-computer interaction device is used to send a broadcast request in response to a user's operation and send audio data to the high-frequency enhanced highway broadcasting integrated machine, and the human-computer interaction device is connected to the high-frequency enhanced highway broadcasting integrated machine through a network; The external power amplifier module is used to amplify audio data, and the external power amplifier module is connected to the high-frequency enhanced highway broadcasting integrated machine via a third audio output interface.

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