Voice broadcast device supporting multiple interface types
By designing a voice broadcasting device that supports multiple interface types, the problem of existing equipment being unable to be compatible with multiple audio source inputs has been solved, enabling safe production management in complex environments such as coal mines and improving the equipment's versatility and flexibility.
Patent Information
- Application Number
- CN202520026507.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing voice broadcasting equipment is not compatible with multiple audio input devices, resulting in a single interface type problem when used in complex environments such as coal mines, which affects safe production management.
Design a voice broadcasting device that supports multiple interface types, including a power supply module, a main control circuit, an audio amplifier circuit, a voice conversion circuit, a speaker, etc. Through the combination of circuits, compatibility with various audio source input devices is achieved.
This improves the versatility and flexibility of voice broadcasting equipment, ensuring the effectiveness of safety production management in complex environments such as coal mines.
Smart Images
Figure CN223693994U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to voice drive circuit technical field especially a voice broadcast device of support multi -interface type. BACKGROUND
[0002] In some special places, such as coal mine production environment, voice broadcast equipment plays a very important role, it can timely convey various information to miner, such as safety prompt, work instruction etc. The structure of voice broadcast equipment generally includes main control drive board and sound source (such as TF storage card, PC's CAN port, U disk output audio signal), loudspeaker etc., when working, the sound source outputs audio signal to main control drive board, and main control drive board exports to loudspeaker after audio signal processing, and then loudspeaker plays loud prompt sound.
[0003] Although the voice broadcast equipment applied to coal mine production etc. meets the work needs to some extent, but there are still some technical problems due to the limitation of structure. Specifically, it cannot be compatible with the audio signal input by multiple sound source input devices, that is, since it can only receive and process the audio signal input by one kind of sound source input device, when the corresponding one kind of sound source input device fails, it will cause adverse effects on the production management voice broadcast prompt work of coal mine, and limit its application range in the complex environment of coal mine. In summary, it is very necessary to provide a voice broadcast device compatible with multiple sound source input devices. CONTENT OF UTILITY MODEL
[0004] In order to overcome the voice broadcast equipment used in existing coal mine area due to the limitation of structure, there are disadvantages as described in the background art, the utility model provides under the common action of relevant circuit, can compatible TF storage card, PC's CAN port, U disk input audio signal, can effectively solve the problem of single interface type of existing voice broadcast equipment, improve the versatility and use flexibility, and play a strong technical support for the safety production management of coal mine area, a voice broadcast device of support multi -interface type.
[0005] The utility model solves the technical scheme that the technical problem adopts:
[0006] The application discloses a voice broadcast device supporting multiple interface types, which comprises a power module, a main control circuit, an audio amplification circuit, a voice conversion circuit, a speaker, a TF storage card interface module, a USB interface module and a CAN bus interface module; the power module, the main control circuit, the audio amplification circuit, the voice conversion circuit, the speaker, the TF storage card interface module, the USB interface module and the CAN bus interface module are installed in a component box; the power output end of the power module is electrically connected with the power input ends of the main control circuit, the audio amplification circuit, the voice conversion circuit, the TF storage card interface module, the USB interface module and the CAN bus interface module respectively; the audio input end of the speaker is electrically connected with the signal output end of the audio amplification circuit; the signal output end of the CAN bus interface module is electrically connected with the signal input end of the main control circuit; the signal output ends of the main control circuit, the TF storage card interface module and the USB interface module are electrically connected with the multi-channel signal input end of the voice conversion circuit respectively; the signal output end of the voice conversion circuit is electrically connected with the signal input end of the audio amplification circuit; and the signal input end of the CAN bus interface module is electrically connected with the CAN signal port of a PC.
[0007] Further, the power module has two power input ends and three power output ends.
[0008] Further, the main control circuit is a single-chip microcomputer module, and the positive power input ports 1, 48, 36, 24 and 9 of the single-chip microcomputer module are connected; and the negative power input ports 9, 47, 35 and 22 of the single-chip microcomputer module are connected.
[0009] Further, the audio amplification circuit comprises an audio amplification module, an inductor and a capacitor which are electrically connected; the positive input ports 5, 6, 7, 14, 27, 28, 15 and 16 of the audio amplification module are connected; the negative input ports 3, 4, 24, 19, 29, 9, 10, 8, 11 and one end of the two capacitors of the audio amplification module are connected; one end of the first inductor of the audio amplification module is connected with the OUTPL port 25 and the OUTNL port 23; one end of the second inductor of the audio amplification module is connected with the OUTNR port 20 and the OUTPR port 18; and the other ends of the two inductors and the other ends of the two capacitors are connected respectively.
[0010] Further, the voice conversion circuit comprises a voice conversion module, a resistor and a capacitor which are electrically connected; the negative input ports 3 and 15 of the voice conversion module are connected; one end of the first resistor of the voice conversion module is connected with the DACL port 14; one end of the second resistor of the voice conversion module is connected with the ADC0 / PA0DACR port 13; and the other ends of the two resistors and one end of the capacitor are connected.
[0011] Further, the TF storage card interface module is matched with electrically connected resistance and capacitor, the negative input port 10 pin, 11 pin, 13 pin, 14 pin, 6 pin of the TF storage card interface module is connected with one end of the capacitor, and the positive input port 4 pin of the TF storage card interface module is connected with one end of the resistance and the other end of the capacitor.
[0012] Further, the negative input port 2 pin of the CAN bus interface module is connected with the STB port 8 pin, and the positive input port 3 pin of the CAN transceiver circuit module is connected with the VIO port 5 pin.
[0013] Compared with the prior art, the power module, the main control circuit, the audio amplification circuit, the voice conversion circuit, the loudspeaker, the TF storage card interface module, the USB interface module and the CAN bus interface module jointly act, through simple power switch switching operation, the TF storage card, the CAN port of the PC and the U disk can output audio signals to the voice conversion circuit, and then the voice conversion circuit outputs corresponding sound source signals to the signal input end of the audio amplification circuit, and the audio amplification circuit amplifies the audio signals and plays them through the loudspeaker. BRIEF DESCRIPTION OF DRAWINGS
[0014] The utility model will be further explained below in combination with the drawings and embodiments.
[0015] Figure 1 It is the structural diagram of the utility model.
[0016] Figure 2 It is the circuit diagram of the utility model. DETAILED DESCRIPTION
[0017] Figure 1 、 2 As shown in the figure, a voice broadcast device supporting multiple interface types comprises a power module, a main control circuit, an audio amplification circuit, a voice conversion circuit, a loudspeaker, a TF storage card interface module, a USB interface module and a CAN bus interface module, wherein the power module, the main control circuit, the audio amplification circuit, the voice conversion circuit, the loudspeaker, the TF storage card interface module, the USB interface module and the CAN bus interface module are installed on the circuit board in the component box.
[0018] Figure 1 、 2As shown, the power module U7 has two power input 1 and 2 pins, three power output 3 and 6 pins (3.3V), 4 and 6 pins (5V), 5 and 6 pins (12V); three power output is used as negative power output 6 pin). The main control circuit is a single-chip microcomputer module U2, the positive power input port 1 pin, 48 pin, 36 pin, 24 pin, 9 pin of the single-chip microcomputer module U2 is connected, and the negative power input port 9 pin, 47 pin, 35 pin, 22 pin of the single-chip microcomputer module U2 is connected. The audio amplification circuit includes an audio amplification module U4 and inductors L1 and L2, capacitors C3 and C4 connected by circuit board wiring, the positive input port 5 pin, 6 pin, 7 pin, 14 pin, 27 pin, 28 pin, 15 pin, 16 pin of the audio amplification module U4 is connected, the negative input port 3 pin, 4 pin, 24 pin, 19 pin, 29 pin, 9 pin, 10 pin, 8 pin, 11 pin of the audio amplification module U4 is connected with one end of the two capacitors C3 and C4, the OUTPL port 25 pin, the OUTNL port 23 pin of the audio amplification module U4 is connected with one end of the first inductor L1, the OUTNR port 20 pin, the OUTPR port 18 pin of the audio amplification module U4 is connected with one end of the second inductor L1, and the other ends of the two inductors L1 and L2 and the other ends of the two capacitors C3 and C4 are connected respectively. The voice conversion circuit includes a voice conversion module U3 and resistors R1, R2, R3, a capacitor C2 connected by circuit board wiring, the negative input port 3 pin, 15 pin of the voice conversion module U3 is connected, the DACL port 14 pin of the voice conversion module U7 is connected with one end of the first resistor R2, the ADC0 / PA0DACR port 13 pin of the voice conversion module U7 is connected with one end of the second resistor R3, and the other end of the first resistor R2, the other end of the second resistor R3 and one end of the capacitor C2 are connected. The TF storage card interface module is matched with a resistor R1 and a capacitor C1 connected by circuit board wiring, the negative input port 10 pin, 11 pin, 13 pin, 14 pin, 6 pin of the TF storage card interface module U5 is connected with one end of the capacitor C1, and the positive input port 4 pin of the TF storage card interface module U5 is connected with one end of the resistor R1 and the other end of the capacitor C1. The negative input port 2 pin of the CAN bus interface module U1 is connected with the STB port 8 pin, and the positive input port 3 pin of the CAN bus interface module U1 is connected with the VIO port 5 pin.
[0019] Figure 1 、 2As shown, the power input 1 and 2 pins of the power module U7 are connected to the two poles of the 220V AC power supply through wires, and the power output 3 and 6 pins of the power module U7 are connected to the 1 and 8 pins of the single-chip microcomputer module U2, the 3 and 2 pins of the CAN bus interface module U1 (a power switch S1 is connected in series between the 3 pin of the CAN bus interface module U1 and the 3 pin of the power output of the power module U7), the other end of the resistor R1 and one end of the capacitor C1 of the TF storage card interface module U5 (a power switch S2 is connected in series between the other end of the resistor R1 of the TF storage card interface module U5 and the 3 pin of the power output of the power module U7), respectively through wires. The power output 4 and 6 pins of the power module U7 are connected to the 4 and 3 pins of the voice conversion module U3, the 1 and 5 pins of the USB interface module (a power switch S3 is connected in series between the 1 pin of the USB interface module and the 4 pin of the power output of the power module U7), respectively through wires. The power output 5 and 6 pins of the power module U7 are connected to the 7 and 24 pins of the audio amplification module U4, respectively through wires. The audio input ends of the loudspeaker B are connected to one end of the signal output capacitor C3 and C4 of the audio amplification circuit, respectively through wires. The signal output 4 and 1 pins of the CAN bus interface module are connected to the signal input 33 and 32 pins of the single-chip microcomputer module U2 of the main control circuit, respectively through wires. The signal output 31 and 30 pins of the single-chip microcomputer module U1 of the main control circuit, the signal output 5 and 2 pins of the TF storage card interface module U5, the signal output 2 and 3 pins of the USB interface module U6, and the three-way signal input 1 and 2 pins, 6 and 7 pins, 9 and 10 pins of the voice conversion circuit module are connected, respectively through wires. The other end of the signal output capacitor C2 of the voice conversion circuit module U3 is connected to the signal input 12 pin of the audio amplification circuit module U4 through a wire, and the signal input 6 and 7 pins of the CAN bus interface module U1 are connected to the CAN signal port of the PC through wires.
[0020] Figure 1 , 2 As shown, after the 220V AC power supply enters the power input of the power module U7, the 3 and 6 pins of the power module U7 output 3.3V DC power to the power input of the single-chip microcomputer module U2, the CAN bus interface module U1, and the TF storage card interface module U5 (when used, its socket is inserted into the TF storage card containing audio content); the 4 and 6 pins of the power module U7 output 5V DC power to the power input of the voice conversion circuit and the USB interface module (when used, its socket is inserted into the U disk containing audio content); and the 5 and 6 pins of the power module U7 output 12V DC power to the power input of the audio amplification module U4.
[0021] Figure 1 , 2As shown, under the premise of opening the power switch S1, the bus audio signal output by the PC enters the signal input end of the CAN bus interface module U1, the CAN bus interface module U1 converts the received bus audio signal into a digital signal and transmits it to the single-chip microcomputer module U2 for processing, the single-chip microcomputer module U2 analyzes the information, specifically analyzes the digital signal received from the CAN bus interface module U1, and then sends the address code of the voice segment information to the voice conversion module U3. Under the premise of opening the power switch S2, the TF storage card interface module U5 sends the pre-stored address code of the voice segment information of the TF storage card (the user can pre-store the voice file in the TF storage card) to the voice conversion module U3. Under the premise of opening the power switch S3, the USB interface module U6 sends the pre-stored address code of the voice segment information of the U disk (the user can pre-store the voice file in the U disk) to the voice conversion module U3 (it can also be directly connected to the USB socket of the PC and directly send the address code of the voice segment information of the PC to the voice conversion module U3). When the voice conversion module U3 works, according to one kind of audio voice signal (such as "the device X appears the fault, the fault code is XXX") output by the PC or the TF storage card interface module U5, the USB interface module U6 sends the audio voice signal to the audio amplification module U4 through the resistance R2, the resistance R3 and the capacitor C2 (the series connection of the resistance and the capacitor can help to eliminate the high-frequency noise in the audio signal, ensure the pure transmission of the signal, and protect the amplifier from being damaged by large current), the audio amplification module U4 amplifies the input audio signal, and then processes the audio signal through the inductor L1, the inductor L2 and the capacitor C3, C4 (the inductor and the capacitor can effectively suppress high-frequency noise, ensure the stability of the output direct current, and avoid damage to the device, in addition, the energy storage and release function of the capacitor can improve the low-frequency response of the power amplifier, make the output sound of the loudspeaker more powerful and deep, and enhance the stability of the power amplifier, reduce noise and distortion), and finally the loudspeaker B plays out, so that the personnel in the relevant area can hear the loud voice prompt in time.
[0022] Figure 1 、 2 As shown, through the above, the power switch of the utility model can be switched simply, the TF storage card, the CAN port of the PC and the U disk can output the audio signal to the voice conversion circuit, then the voice conversion circuit outputs the corresponding audio source signal to the signal input end of the audio amplification circuit, the audio signal is amplified by the audio amplification circuit and played out by the loudspeaker, the problem of single interface type of the existing voice broadcast device can be solved effectively, the universality and use flexibility are improved, and the utility model plays a strong technical support for the safety production management in coal mines and other areas.
[0023] The basic principle and main features of the present application and the advantages of the present application are shown and described above, and for those skilled in the art, it is obvious that the present application is limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.
[0024] In addition, it should be understood that, although the present application is described in the form of an embodiment, the embodiment does not only contain one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that those skilled in the art can understand.
Claims
1. A voice broadcast device supporting multiple interface types, comprising a power module, a master control circuit, an audio amplification circuit, a voice conversion circuit, a speaker, a TF storage card interface module, a USB interface module, and a CAN bus interface module; characterized in that, The power module, the main control circuit, the audio amplification circuit, the voice conversion circuit, the speaker, the TF storage card interface module, the USB interface module and the CAN transceiver circuit module are installed in the component box; the power output end of the power module is electrically connected with the power input ends of the main control circuit, the audio amplification circuit, the voice conversion circuit, the TF storage card interface module, the USB interface module and the CAN bus interface module respectively; the audio input end of the speaker is electrically connected with the signal output end of the audio amplification circuit; the signal output end of the CAN bus interface module is electrically connected with the signal input end of the main control circuit; the signal output ends of the main control circuit, the TF storage card interface module and the USB interface module are respectively electrically connected with the multi-channel signal input end of the voice conversion circuit; the signal output end of the voice conversion circuit is electrically connected with the signal input end of the audio amplification circuit; and the signal input end of the CAN bus interface module is electrically connected with the CAN signal port of the PC.
2. The voice announcement device of claim 1, wherein, The power module has two power input ends and three power output ends.
3. The voice announcement device of claim 1, wherein, The main control circuit is a single-chip module, and the positive power input ports 1, 48, 36, 24 and 9 of the single-chip module are connected; and the negative power input ports 9, 47, 35 and 22 of the single-chip module are connected.
4. The voice announcement device of claim 1, wherein, The audio amplification circuit comprises an audio amplification module and inductors and capacitors which are electrically connected; the positive input ports 5, 6, 7, 14, 27, 28, 15 and 16 of the audio amplification module are connected; the negative input ports 3, 4, 24, 19, 29, 9, 10, 8, 11 and one end of two capacitors of the audio amplification module are connected; one end of a first inductor of the audio amplification module is connected with the OUTPL port 25 and the OUTNL port 23; one end of a second inductor of the audio amplification module is connected with the OUTNR port 20 and the OUTPR port 18; and the other ends of the two inductors and the other ends of the two capacitors are connected respectively.
5. The voice announcement device of claim 1, wherein, The voice conversion circuit comprises a voice conversion module and resistors and a capacitor which are electrically connected; the negative input ports 3 and 15 of the voice conversion module are connected; one end of a first resistor of the voice conversion module is connected with the DACL port 14; one end of a second resistor of the voice conversion module is connected with the ADC0 / PA0DACR port 13; and the other ends of the two resistors and one end of the capacitor are connected.
6. The voice announcement device of claim 1, wherein, The TF storage card interface module is matched with resistors and a capacitor which are electrically connected; the negative input ports 10, 11, 13, 14 and 6 of the TF storage card interface module are connected with one end of the capacitor; and the positive input port 4 of the TF storage card interface module is connected with one end of the resistor and the other end of the capacitor.
7. The voice announcement device of claim 1, wherein, The negative input port 2 of the CAN bus interface module is connected with the STB port 8; and the positive input port 3 of the CAN transceiver circuit module is connected with the VIO port 5.