CN215341966U

CN215341966U - Voice broadcasting system

Info

Publication number: CN215341966U
Application number: CN202121973051.4U
Authority: CN
Inventors: 李海宽; 李明辉; 马晓月
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-22
Filing date: 2021-08-22
Publication date: 2021-12-28
Anticipated expiration: 2031-08-22

Abstract

The utility model discloses a voice broadcasting system, which comprises a serial port instruction interface and a sound production module, wherein the serial port instruction interface is electrically connected with a TTL-to-RS 485 transceiver through a voltage protection circuit, the TTL-to-RS 485 transceiver is electrically connected with a signal sending test lamp, a signal receiving test lamp, an MP3 hardware decoding circuit and an RS485 enabling control circuit respectively, an MP3 hardware decoding circuit is electrically connected with a decoding work test lamp and an audio amplification circuit respectively, the audio amplification circuit is electrically connected with the sound production module, the sound production module is provided with a loudspeaker, and the power supply test lamp, the voltage protection circuit, the TTL-to-RS 485 transceiver, the RS485 enabling control circuit, the audio amplification circuit and the MP3 hardware decoding circuit are electrically connected with a power supply interface module through a power supply control circuit respectively and are powered by the power supply interface module. The system supports a computer to directly update the content of the SPI-flash, can play designated music and play music through simple serial commands, does not need complicated bottom layer operation, and is convenient to use, stable and reliable.

Description

Voice broadcasting system

Technical Field

The utility model relates to an intelligent system, in particular to a voice broadcasting system.

Background

The voice broadcast has wide requirements in life, and the existing voice broadcast system has the problems that the computer device cannot be supported well, complicated bottom layer operation is needed, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a voice broadcasting system, which supports a computer to directly update the contents of the SPI-flash, can complete the functions of playing designated music, how to play the music and the like through a simple serial port instruction, does not need complicated bottom layer operation, and is convenient to use, stable and reliable.

In order to solve the technical problems, the utility model adopts the following technical means:

the utility model provides a voice broadcast system, including serial ports instruction interface, sound production module, serial ports instruction interface pass through voltage protection circuit and TTL and change RS485 transceiver electricity and be connected, TTL changes RS485 transceiver and signal transmission test lamp, signal reception test lamp, MP3 hardware decoding circuit and RS485 enable control circuit electricity respectively and are connected, MP3 hardware decoding circuit with decode the work test lamp, audio amplification circuit electricity respectively is connected, audio amplification circuit is connected with the sound production module electricity, the sound production module is equipped with loudspeaker, power test lamp, voltage protection circuit, TTL changes RS485 transceiver, RS485 enables control circuit, audio amplification circuit, MP3 hardware decoding circuit are connected with power interface module electricity through power control circuit respectively, by the power interface module power supply.

The 485 signal level is converted into TTL level for the serial port voice broadcast chip to use.

According to the technical scheme, the serial port instruction interface is arranged, the computer is supported to directly update the content of the SPI-flash, designated music can be played through a simple serial port instruction, and functions such as how to play music and the like can be achieved, complex bottom layer operation is not needed, and the device is convenient to use, stable and reliable.

The further preferred technical scheme is as follows:

the power control circuit is provided with an anti-reverse connection circuit, a first filter circuit, a 7805 voltage stabilizing circuit and a second filter circuit, the output end of the power interface is electrically connected with the anti-reverse connection circuit, the anti-reverse connection circuit is electrically connected with the first filter circuit, the first filter circuit is electrically connected with the 7805 voltage stabilizing circuit, and the 7805 voltage stabilizing circuit is electrically connected with the second filter circuit and supplies power to the outside through the second filter circuit.

Through the arrangement, reverse connection can be prevented, and voltage conversion and filtering are carried out on the power supply, so that the working stability of other modules or circuits is guaranteed.

Drawings

Fig. 1 is a schematic view of the frame structure of the present invention.

Description of reference numerals: 1-a power interface; 2-anti-reverse circuit; 3-a first filter circuit; 4-7805 voltage-stabilizing circuit; 5-a second filter circuit; 6-power supply test lamp; 7-serial port instruction interface; 8-a voltage protection circuit; 9-TTL to RS485 transceiver; 10-RS485 enable control circuitry; 11-signalling test lights; 12-signal reception test lights; 13-a sound module; 14-an audio amplification circuit; 15-MP 3 hardware decoding circuit; 16-decoding the working test lamp.

Detailed Description

The present invention will be further described with reference to the following examples.

Referring to fig. 1, the voice broadcasting system of the present invention is composed of a serial port instruction interface 7, a sound generating module 13, a serial port instruction interface 7, a TTL to RS485 transceiver 9, an-RS 485 enable control circuit 10, an audio amplifying circuit 14, and an MP3 hardware decoding circuit 15; the serial port instruction interface 7 is electrically connected with a TTL-to-RS 485 transceiver 9 through a voltage protection circuit 8, the TTL-to-RS 485 transceiver 9 is electrically connected with a signal sending test lamp 11, a signal receiving test lamp 12, an MP3 hardware decoding circuit 15 and an RS485 enabling control circuit 10 are respectively and electrically connected, the MP3 hardware decoding circuit 15 is electrically connected with a decoding work test lamp 16 and an audio amplifying circuit 14 respectively, the audio amplifying circuit 14 is electrically connected with a sounding module 13, the sounding module 13 is provided with a loudspeaker, the power supply test lamp 6, the voltage protection circuit 8, the TTL-to-RS 485 transceiver 9, the RS485 enabling control circuit 10, the audio amplifying circuit 14 and the MP3 hardware decoding circuit 15 are respectively and electrically connected with a power supply interface 1 module through a power supply control circuit to supply power.

The power control circuit is provided with an anti-reverse connection circuit 2, a first filter circuit 3, a 7805 voltage stabilizing circuit 4 and a second filter circuit 5, the output end of the power interface 1 is electrically connected with the anti-reverse connection circuit 2, the anti-reverse connection circuit 2 is electrically connected with the first filter circuit 3, the first filter circuit 3 is electrically connected with the 7805 voltage stabilizing circuit 4, and the 7805 voltage stabilizing circuit 4 is electrically connected with the second filter circuit 5 to supply power to the outside through the second filter circuit 5.

This technical scheme is through setting up serial ports instruction interface 7, supports the computer and directly updates the content of SPI-flash, can accomplish through simple serial ports instruction and play appointed music to and how to play functions such as music, need not loaded down with trivial details bottom operation, convenient to use, reliable and stable.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.

Claims

1. The utility model provides a voice broadcast system, includes serial ports instruction interface, sound production module, its characterized in that: the serial port instruction interface is electrically connected with the TTL-to-RS 485 transceiver through a voltage protection circuit, the TTL-to-RS 485 transceiver is electrically connected with a signal sending test lamp, a signal receiving test lamp, an MP3 hardware decoding circuit and an RS485 enabling control circuit are respectively electrically connected, an MP3 hardware decoding circuit is electrically connected with a decoding work test lamp and an audio amplification circuit, the audio amplification circuit is electrically connected with a sounding module, the sounding module is provided with a loudspeaker, the power supply test lamp, the voltage protection circuit, the TTL-to-RS 485 transceiver, the RS485 enabling control circuit, the audio amplification circuit and an MP3 hardware decoding circuit are respectively electrically connected with a power supply interface module through a power supply control circuit, and power is supplied by the power supply interface module.

2. The voice broadcast system of claim 1, wherein: the power control circuit is provided with an anti-reverse connection circuit, a first filter circuit, a 7805 voltage stabilizing circuit and a second filter circuit, the output end of the power interface is electrically connected with the anti-reverse connection circuit, the anti-reverse connection circuit is electrically connected with the first filter circuit, the first filter circuit is electrically connected with the 7805 voltage stabilizing circuit, and the 7805 voltage stabilizing circuit is electrically connected with the second filter circuit and supplies power to the outside through the second filter circuit.