CN213028080U - Central controller of background music playing device based on Linux system - Google Patents
Central controller of background music playing device based on Linux system Download PDFInfo
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- CN213028080U CN213028080U CN202022152356.0U CN202022152356U CN213028080U CN 213028080 U CN213028080 U CN 213028080U CN 202022152356 U CN202022152356 U CN 202022152356U CN 213028080 U CN213028080 U CN 213028080U
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Abstract
The utility model relates to a background music system technical field discloses a central controller of background music play device based on Linux system, including main control chip, audio decoder, UART and 485 conversion chips, wiFi chip and bluetooth chip, main control chip is used for sending and handles the hardware instruction, audio decoder is used for converting the digital audio information who reads into analog audio signal output, UART and 485 conversion chips are used for converting and sending data, the wiFi chip is used for providing the ability of visiting the network for main control chip, the bluetooth chip is used for transmitting the audio data transmission of peripheral equipment to audio decoder; according to the central controller of the background music playing device based on the Linux system, the functions of receiving audio files and outputting analog audio signals to the playing elements of the central controller of the background music playing device including but not limited to the audio files and the playing elements are achieved through the central controller, the cost is reduced through the Linux system, and the use experience of a user is improved.
Description
Technical Field
The utility model relates to a background music system technical field especially relates to a central controller of background music play device based on Linux system.
Background
The background music system is a component of smart home, namely, any room including a living room, a bedroom, a kitchen, a bathroom and the like can be provided with music wires, and music can be played in each room through one or more sound sources. With the continuous improvement of living standard, the demand of people for family background music is continuously increasing, and people put forward higher requirements on the connectivity of a background music system besides the basic function of playing music.
In the prior art, most of central controllers of background music playing devices only have a function of playing music, cannot communicate with other devices to obtain more audio resources, and are poor in connectivity.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a background music play device's central controller based on Linux system aims at solving prior art, and background music play device's central controller is most only to play the function of music, can't carry out the communication with other equipment and is connected and acquire more audio resources, the poor problem of UNICOM's nature.
The utility model discloses a realize like this, provide a central controller of background music play device based on Linux system, include:
a main control chip;
the audio decoder is electrically connected with the main control chip and is used for converting the read digital audio information into an analog audio signal and outputting the analog audio signal;
the UART and 485 conversion chip is electrically connected with the main control chip and is used for converting UART data transmitted to the UART and 485 conversion chip by the main control chip into 485 data and then transmitting the 485 data to peripheral equipment, or converting 485 data transmitted to the UART and 485 conversion chip by the peripheral equipment into UART data and then transmitting the UART data to the main control chip;
the WiFi chip is electrically connected with the main control chip and is used for providing the network access capability for the main control chip;
and the Bluetooth chip is electrically connected with the audio decoder and is used for transmitting the audio data of the peripheral equipment to the audio decoder.
Furthermore, the audio decoder is provided with a first interface, the first interface is used for being electrically connected with a power amplifier chip, and the power amplifier chip is used for amplifying the analog audio signal from the audio decoder and outputting the amplified analog audio signal to the loudspeaker.
Furthermore, a second interface is arranged on the audio decoder, the second interface is used for being electrically connected with a sound box, and the audio decoder outputs the analog audio signal to the sound box through the second interface.
Furthermore, a third interface is arranged on the audio decoder, the third interface is used for being electrically connected with the microphone, and the audio decoder is used for receiving an instruction sent by a user through the microphone, processing the instruction and sending the processed instruction to the main control chip.
Furthermore, a fourth interface is arranged on the audio decoder, the fourth interface is used for electrically connecting the AUX audio equipment, and the audio decoder is used for receiving the audio played by the AUX audio equipment and outputting the audio after processing.
Further, be provided with the fifth interface on the main control chip, the fifth interface is used for the electricity to connect doorbell switch, main control chip is used for receiving doorbell switch broadcast doorbell's instruction and broadcast doorbell.
Furthermore, a sixth interface is arranged on the main control chip, the sixth interface is used for electrically connecting a storage medium for storing audio files, and the main control chip is used for reading the audio files in the storage medium.
Furthermore, a seventh interface is arranged on the main control chip, the seventh interface is used for electrically connecting the display screen, and the main control chip is used for controlling the display screen to display the Linux system and the application information thereof.
Furthermore, an eighth interface is arranged on the main control chip and used for being electrically connected with the touch chip, the touch chip is used for being electrically connected with the touch screen, a user sends an instruction to the touch chip through the touch screen, the touch chip sends the instruction to the main control chip, and the main control chip is used for receiving the instruction and executing the instruction.
Compared with the prior art, the utility model discloses mainly there is following beneficial effect:
the central controller of the background music playing device based on the Linux system comprises a main control chip, an audio decoder, a UART and 485 conversion chip, a WiFi chip and a Bluetooth chip, wherein the main control chip is used for sending and processing hardware instructions, the audio decoder is used for converting read digital audio information into analog audio signal output, the UART and 485 conversion chip is used for converting and sending data, the WiFi chip is used for providing the capability of accessing a network for the main control chip, and the Bluetooth chip is used for transmitting the audio data of peripheral equipment to the audio decoder. The central controller of the background music playing device has the advantages that the functions of receiving audio files, outputting analog audio signals to the playing element and the like are achieved through the device, the background music is communicated with other devices through the UART and 485 conversion chip, the WiFi chip and the Bluetooth chip, more audio resources are effectively obtained, the cost is reduced through the Linux system, and the use experience of users is improved.
Drawings
Fig. 1 is a schematic diagram of a central controller of a background music playing device based on a Linux system according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a main control chip of a central controller of a background music playing device based on a Linux system according to an embodiment of the present invention.
Reference numerals: the system comprises a main control chip 1, an audio decoder 2, a UART and 485 conversion chip 3, a WiFi chip 4 and a Bluetooth chip 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a central controller of a background music playing device based on a Linux system according to the present invention, and referring to fig. 2, the central controller of a background music playing device based on a Linux system according to the present embodiment includes a main control chip 1, an audio decoder 2, a UART and 485 conversion chip 3, a WiFi chip 4, and a bluetooth chip 5.
The main control chip 1 is used for controlling I/O, I/O means input/output (input/output), and is used for sending and processing hardware instructions, for example, a device switch is connected, which is an instruction, and the device is connected to a usb port of a computer, which is also an instruction. These instructions are handled by the main control chip 1.
Preferably, the main control chip 1 is of model RK 3308.
And the audio decoder 2 is electrically connected with the main control chip 1 and is used for converting the read digital audio information into an analog audio signal and outputting the analog audio signal to the playing element for playing.
Specifically, the audio decoder 2 may be built in the main control chip 1, or may be separately disposed and electrically connected to the main control chip 1.
The UART and 485 conversion chip 3 is electrically connected with the main control chip 1 and is used for converting UART data transmitted to the UART and 485 conversion chip 3 by the main control chip 1 into 485 data, transmitting the 485 data to peripheral equipment, or converting 485 data transmitted to the UART and 485 conversion chip 3 by the peripheral equipment into UART data, and transmitting the UART data to the main control chip 1.
Specifically, the master control chip 1 sends the UART data to the UART and 485 conversion chip 3 through a UART data bus, and the UART and 485 conversion chip 3 converts the UART data into 485 data and sends the 485 data to the peripheral equipment through a 485 data bus; or the peripheral equipment sends 485 data to the UART and 485 conversion chip 3 through a 485 data bus, the UART and 485 conversion chip 3 converts the 485 data into UART data, and then the UART data is sent to the main control chip 1 through a UART data bus.
For example, the 485 device of the user may send a control instruction to the UART and 485 conversion chip 3, the UART and 485 conversion chip 3 converts the instruction and sends the converted instruction to the main control chip 1, the main control chip 1 executes the corresponding control instruction action, and then feeds back the returned status information to the 485 device of the user after the UART and 485 conversion chip 3 converts the information, and the control instruction sent by the user includes switching of audio input sources (a usb disk, an SD card, online music, AUX, bluetooth music, etc.), audio play control (play, pause, previous, next, random play, sequential play, single track cycle, etc.), volume adjustment, and the like.
The model of the UART and 485 conversion chip 3 is RK 3128.
It should be noted that UART (Universal Asynchronous Receiver/Transmitter) is a Universal serial data bus used for Asynchronous power. The bus is bidirectional, and full-duplex transmission and reception can be realized.
485, serial bus standard, RS-485 employs balanced transmission and differential reception, and thus has the capability of suppressing common mode interference.
And the WiFi chip 4 is electrically connected with the main control chip 1, is internally provided with a WiFi protocol and is used for providing the network access capability for the main control chip 1.
Specifically, the model of the WiFi chip 4 includes, but is not limited to, one of BCM4325, AR1021x, 88W8686, and TICC 3200.
Bluetooth chip 5 is connected with audio decoder 2 electricity, and Bluetooth chip 5 can be connected with the peripheral equipment bluetooth that has the bluetooth function to audio decoder 2 is given with peripheral equipment's audio data transmission through the mode of bluetooth communication, audio decoder 2 handles the back and sends for the broadcast component and broadcast.
Specifically, the model of the bluetooth chip 4 includes, but is not limited to, one of QCC5120, CC2642R, CYW20706 and nRF 52840.
Moreover, most of the central controllers of the conventional background music playing devices are based on an Android system, and the central controller of the background music playing device is based on a Linux system, so that the cost is lower, and the use experience of a user is improved.
The central controller of the Linux system-based background music playing device comprises a main control chip 1, an audio decoder 2, a UART and 485 conversion chip 3, a WiFi chip 4 and a bluetooth chip 5, wherein the main control chip 1 is used for sending and processing hardware instructions, the audio decoder 2 is used for converting read digital audio information into analog audio signals for output, the UART and 485 conversion chip 3 is used for converting and sending data, the WiFi chip 4 is used for providing the capability of accessing a network for the main control chip 1, and the bluetooth chip 5 is used for transmitting audio data of peripheral equipment to the audio decoder 2. The central controller of the background music playing device has the advantages that the functions of receiving audio files, outputting analog audio signals to the playing element and the like without limitation are achieved through the device, the background music is communicated with other devices through the UART and 485 conversion chip 3, the WiFi chip 4 and the Bluetooth chip 5, more audio resources are effectively obtained, the cost is reduced through the Linux system, and the use experience of users is improved.
As an embodiment of the utility model, be provided with first interface on the audio decoder 2, first interface is used for the electricity to connect the power amplifier chip, and the power amplifier chip is used for amplifying the analog audio signal who comes from audio decoder 2 and outputs the analog audio signal after amplifying to loudspeaker.
Specifically, the power amplifier, i.e. the power amplifier, mainly plays a role in amplifying a relatively weak signal input by a sound source device and then generating a sufficiently large current to drive the speaker to reproduce sound. Here, the audio decoder 2 reads the digital audio information of the audio file and converts the digital audio information into an analog audio signal for output, and the power amplifier chip is used for receiving the analog audio signal output by the audio decoder 2, amplifying the analog audio signal and outputting the amplified analog audio signal to the loudspeaker, and pushing the loudspeaker to sound, namely playing the audio file.
Preferably, the audio decoder 2 is provided with a second interface, the second interface is used for electrically connecting to the sound box, and the audio decoder 2 outputs the analog audio signal to the sound box through the second interface.
In particular, a sound box refers to a device that can convert an audio signal into sound. The popular way is to say that the power amplifier amplifies an audio signal and then emits the sound back by the sound box body, so that the sound of the sound box body is increased.
Optionally, a third interface is arranged on the audio decoder 2, the third interface is used for electrically connecting a microphone, the audio decoder 2 is used for receiving an instruction sent by a user through the microphone, processing the instruction and sending the processed instruction to the main control chip 1, and the main control chip 1 is used for executing the instruction of the user.
The user can send a voice command to the microphone to perform operations such as on-demand of online audio (music, audio books, audio novels, voices, segments, stories, news, party public classes, poems and the like), play control (play, pause, previous, next, random play, sequential play, single song circulation and the like), weather inquiry, alarm clock reminding setting and the like.
Furthermore, a fourth interface is arranged on the audio decoder 2, the fourth interface is used for electrically connecting the AUX audio device, and the audio decoder 2 is used for receiving the audio played by the AUX audio device and outputting the audio after processing.
The AUX audio equipment can be a television, a DVD, a mobile phone and other equipment which can output audio through an AUX wired cable, and is connected with the audio decoder 2 and output to a power amplifier chip or a sound box after being processed by the audio codec.
It should be noted that AUX is an additional signal line design. In general audio equipment, in addition to the actual output and input terminals, several input/output terminals labeled "AUX" are often provided as reserved connection terminals. Such terminals may be utilized when particular applications, such as additional sound output or input, are to be made. Such spare terminals or lines, whether input or output, are collectively referred to as AUX.
Furthermore, be provided with the fifth interface on main control chip 1, the fifth interface is used for the electricity to connect doorbell switch, and main control chip 1 is used for receiving doorbell switch broadcast doorbell's instruction and broadcast doorbell.
Specifically, when the user presses the doorbell, the doorbell switch is switched on, and sends the instruction of playing the doorbell to main control chip 1, and main control chip 1 sends the doorbell audio frequency to audio decoder 2, and audio decoder 2 decodes the doorbell audio frequency and is analog audio signal, and exports and plays for loudspeaker or audio amplifier.
Optionally, a sixth interface is arranged on the main control chip 1, the sixth interface is used for electrically connecting a storage medium for storing audio files, and the main control chip 1 is used for reading the audio files in the storage medium.
Specifically, the storage medium is a usb disk. The audio files are stored in the U disk, and the main control chip 1 can acquire the audio files in the U disk and send the audio files to the audio player 2.
Optionally, the storage medium is an SD card. The SD card stores audio files, and the main control chip 1 can acquire the audio files in the SD card and send the audio files to the audio player 2.
Preferably, the main control chip 1 is provided with a seventh interface, the seventh interface is used for electrically connecting the display screen, the main control chip 1 is used for controlling the display screen to display the Linux system and the application information thereof, and the display screen is used as an inner screen.
As an embodiment of the utility model discloses a be provided with the eighth interface on the main control chip 1, the eighth interface is used for the electricity to connect touch chip, and touch chip is used for the electricity to connect the touch-sensitive screen, and the user gives touch chip send instruction through the touch-sensitive screen, and touch chip sends the instruction for main control chip 1, and main control chip 1 is used for receiving instruction and executive instruction, and here, the touch-sensitive screen uses as the outer screen.
Specifically, the touch screen is electrically connected with the touch chip, the touch chip analyzes the coordinate position of the touch screen clicked by the user, the analyzed coordinate position is reported to the main control chip 1 by the touch chip, and the main control chip 1 opens the entry corresponding to the coordinate position. For example, the online audio can be clicked through the touch screen, the audio files stored in the SD card and the usb disk can be clicked through the touch screen, the Linux AUX application can be clicked through the touch screen, the AUX switch is turned on, and the audio input by the AUX audio device through the AUX interface is played.
Furthermore, the central controller also comprises a video decoder which is electrically connected with the main control chip 1 and is used for carrying out reduction decoding operation on the coded digital video and sending the decoded video to the player for playing.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A central controller of a background music playing device based on a Linux system, comprising:
a main control chip;
the audio decoder is electrically connected with the main control chip and is used for converting the read digital audio information into an analog audio signal and outputting the analog audio signal;
the UART and 485 conversion chip is electrically connected with the main control chip and is used for converting UART data transmitted to the UART and 485 conversion chip by the main control chip into 485 data and then transmitting the 485 data to peripheral equipment, or converting 485 data transmitted to the UART and 485 conversion chip by the peripheral equipment into UART data and then transmitting the UART data to the main control chip;
the WiFi chip is electrically connected with the main control chip and is used for providing the network access capability for the main control chip;
and the Bluetooth chip is electrically connected with the audio decoder and is used for transmitting the audio data of the peripheral equipment to the audio decoder.
2. The central controller according to claim 1, wherein the audio decoder is provided with a first interface, the first interface is electrically connected to a power amplifier chip, and the power amplifier chip is configured to amplify the analog audio signal from the audio decoder and output the amplified analog audio signal to a speaker.
3. The central controller according to claim 1, wherein a second interface is disposed on the audio decoder, the second interface is configured to be electrically connected to a sound box, and the audio decoder outputs the analog audio signal to the sound box through the second interface.
4. The central controller according to claim 1, wherein a third interface is disposed on the audio decoder, the third interface is electrically connected to a microphone, and the audio decoder is configured to receive a command from a user through the microphone, process the command, and send the processed command to the main control chip.
5. The central controller of a Linux system-based background music playing device as recited in claim 1, wherein a fourth interface is disposed on the audio decoder, the fourth interface is configured to electrically connect to an AUX audio device, and the audio decoder is configured to receive audio played by the AUX audio device, process the audio, and output the audio.
6. The central controller of a background music playing device based on a Linux system as recited in claim 1, wherein a fifth interface is disposed on the main control chip, the fifth interface is used for electrically connecting a doorbell switch, and the main control chip is used for receiving an instruction of the doorbell switch to play a doorbell and playing the doorbell.
7. The central controller according to claim 1, wherein a sixth interface is disposed on the main control chip, the sixth interface is used to electrically connect to a storage medium for storing audio files, and the main control chip is used to read audio files in the storage medium.
8. The central controller according to claim 1, wherein a seventh interface is disposed on the main control chip, the seventh interface is configured to be electrically connected to a display screen, and the main control chip is configured to control the display screen to display the Linux system and application information thereof.
9. The central controller of a background music playing device based on a Linux system as recited in claim 1, wherein an eighth interface is disposed on the main control chip, the eighth interface is used to electrically connect the touch chip, the touch chip is used to electrically connect the touch screen, a user sends an instruction to the touch chip through the touch screen, the touch chip sends the instruction to the main control chip, and the main control chip is used to receive the instruction and execute the instruction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022152356.0U CN213028080U (en) | 2020-09-27 | 2020-09-27 | Central controller of background music playing device based on Linux system |
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| CN202022152356.0U CN213028080U (en) | 2020-09-27 | 2020-09-27 | Central controller of background music playing device based on Linux system |
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| CN213028080U true CN213028080U (en) | 2021-04-20 |
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| CN202022152356.0U Active CN213028080U (en) | 2020-09-27 | 2020-09-27 | Central controller of background music playing device based on Linux system |
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