Voice switching system for site calling

Abstract

The utility model relates to a voice switching system for site calling, which comprises a power supply conversion module and a controller, the power supply conversion module is used as a power supply of the system, the controller is in communication connection with a noise reduction management module, the noise reduction management module is connected with a main MIC (Microphone) module and an auxiliary MIC module, and the main MIC module and the auxiliary MIC module are in communication connection. And the main MIC module and the auxiliary MIC module are respectively provided with a corresponding microphone interface. When communication is carried out under the normal condition, the main MIC module is applied, and when the main MIC is damaged, the auxiliary MIC module can be started to realize communication, so that the fault rate of the two MIC modules is far smaller than that of a single MIC. According to the invention, the failure rate can be effectively reduced, and the stability of the paging system during use is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuits, and specifically to a voice switching system for site calls. Background Art

[0002] In some large places such as factories or camps, a paging system needs to be placed at fixed points. When there is an emergency nearby, it is convenient for nearby personnel to use the paging system to call the general dispatching room nearby. This paging system has the characteristics of convenience and strong emergency response. However, this system is often set outdoors. Since it needs to be applied in emergency scenarios, it has high requirements for its stability. Moreover, the outdoor environment is complex, the service life of the equipment is short, and it is prone to problems of damage during use. Summary of the Invention

[0003] The present invention proposes a voice switching system for site calls, which can solve the problem that outdoor systems are affected by the environment and have a high failure rate. This application has the characteristic of high stability.

[0004] The technical solution of the present invention is as follows:

[0005] A voice switching system for site calls, the system includes a power conversion module and a controller. The power conversion module serves as the power supply for the system. The controller is communicatively connected to a noise reduction management module. The noise reduction management module is connected to a main MIC module and an auxiliary MIC module. The main MIC module and the auxiliary MIC module are respectively provided with corresponding microphone interfaces.

[0006] As a further optimization of this solution, the noise reduction management module includes a noise reduction chip U1. The SDA pin of the noise reduction chip U1 is connected to the T0 pin of the controller. The SCL pin of the noise reduction chip U1 is connected to the T1 pin of the controller. The RESET# pin of the noise reduction chip U1 is connected to the WR# pin of the controller.

[0007] As a further optimization of this solution, a MOS transistor is provided between each connection line of the noise reduction chip U1 and the controller. The source electrode of the MOS transistor is connected to the controller, and the gate electrode of the MOS transistor is connected to a 3.3V voltage source.

[0008] As a further optimization of this solution, the MIC0_N pin of the noise reduction chip U1 is connected to the negative pole of the main MIC module, the MIC0_P pin of the noise reduction chip U1 is connected to the positive pole of the main MIC module, the positive pole of the main MIC module is connected to the sliding end of the potentiometer RW1 through the series-connected resistor R7 and capacitor C5, the resistor side of the potentiometer RW1 is connected between the 3 interface of the wiring head Sw1 and the power ground, the sliding end of the potentiometer RW1 is connected to the 1 interface of the wiring head Sw1 through the capacitor C8, the 2 interface of the wiring head Sw1 is connected to the main microphone connector P2, and the 1 pin of the wiring head Sw1 is connected to the 5V voltage source through the resistor R1.

[0009] As a further optimization of this solution, the MIC1_N pin of the noise reduction chip U1 is connected to the negative pole of the auxiliary MIC module, the MIC1_P pin of the noise reduction chip U1 is connected to the positive pole of the auxiliary MIC module, the positive pole of the auxiliary MIC module is connected to the auxiliary microphone connector P2 through the series-connected resistor R3 and capacitor C2, the negative pole of the auxiliary MIC module is grounded through the series-connected resistor R4 and capacitor C3, the other connection point of the auxiliary microphone connector P2 is grounded, and the positive pin of the auxiliary microphone connector P2 is connected to the 5V voltage source through the resistor R1.

[0010] As a further optimization of this solution, the noise reduction chip U1 is also connected to the camera audio module. The LINE1_N of the noise reduction chip U1 is connected to the sliding end of the potentiometer RW2 through the resistor C24 and capacitor C9. The resistor side of the potentiometer RW2 is connected between the positive pole of the interface P4 and SGHD. The LINE1_P of the noise reduction chip U1 is connected to SGND through the capacitor C22. The far interface P4 end of the capacitor C9 is connected to SGND through the resistor C21.

[0011] As a further optimization of this solution, the power supply module includes a voltage regulator U3 and a voltage regulator U8. The input pin of the voltage regulator U3 is externally connected to a 12V voltage source through the interface P6. The output end of the voltage regulator U3 is connected to the input end of the voltage regulator U8. The output end of the voltage regulator U8 serves as a 3.3V voltage source, and the output end of the voltage regulator U3 serves as a 5V voltage source.

[0012] As a further optimization of this solution, the power supply module also includes a 1.8V voltage stabilization unit. The 1.8V voltage stabilization module includes a voltage regulator U9. The input of the voltage regulator U9 is connected to the 5V voltage source, and the output end of the voltage regulator U9 serves as a 1.8V voltage source.

[0013] The working principle and beneficial effects of the present invention are as follows:

[0014] This solution is externally connected with a communication module and needs to be used in cooperation with the communication equipment in the dispatching room or the main control room. Multiple paging systems are placed in the arranged factory area. When something happens nearby, the nearby personnel can contact the dispatching room through the nearest paging system. In this application, a command program is written in the controller. The noise reduction management module is used to reduce the noise of the voice signal output by the controller and manage the voice commands of the controller. After the signal processing of the noise reduction management module, the main MIC module and the auxiliary MIC module are connected. Under normal circumstances, when communicating, the main MIC module is applied. When the main MIC is damaged, the auxiliary MIC module can be enabled to achieve communication. In this way, the failure rate of the two MIC modules is much lower than that of a single MIC. Applying this application can effectively reduce the failure rate and ensure the stability of the paging system during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0016] Figure 1 FIG. is the circuit schematic diagram of the controller and its peripheral circuits;

[0017] Figure 2 FIG. is the circuit schematic diagram of the noise reduction management module;

[0018] Figure 3 FIG. is the circuit schematic diagram of the main MIC module and the auxiliary MIC module;

[0019] Figure 4 FIG. is the circuit schematic diagram of the 5V voltage stabilization unit and the 3.3V regulated voltage in the power supply module;

[0020] Figure 5 FIG. is the circuit schematic diagram of the 1.8V voltage stabilization unit in the power supply module. SPECIFIC EMBODIMENTS

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present invention.

[0022] A voice switching system for venue calling. The system includes a power conversion module and a controller. The power conversion module serves as the power supply for the system. The controller is communicatively connected to a noise reduction management module. The noise reduction management module is connected to a main MIC module and an auxiliary MIC module. The main MIC module and the auxiliary MIC module are respectively provided with corresponding microphone interfaces. In this application, a command program is written in the controller. The noise reduction management module is used to reduce the noise of the voice signal output by the controller and manage the voice commands of the controller. After the signal processing by the noise reduction management module, when communicating normally with the main MIC module and the auxiliary MIC module connected, the main MIC module is applied. When the main MIC is damaged, the auxiliary MIC module can be enabled to achieve communication. In this way, the failure rate of the two MIC modules is much lower than that of a single MIC.

[0023] As shown in the attached Figure 1 and 2 the figure, the noise reduction management module includes a noise reduction chip U1. The SDA pin of the noise reduction chip U1 is connected to the T0 pin of the controller. The SCL pin of the noise reduction chip U1 is connected to the T1 pin of the controller. The RESET# pin of the noise reduction chip U1 is connected to the WR# pin of the controller. A MOS transistor is provided between each connection line of the noise reduction chip U1 and the controller. The source electrode of the MOS transistor is connected to the controller, and the gate electrode of the MOS transistor is connected to a 3.3V voltage source.

[0024] Among them, the MOS transistor plays a role of a switch. Since its gate electrode is connected to a 3.3V voltage source, when the voltage source is powered off, the MOS transistor will directly block the connection between the controller and the noise reduction management module, ensuring the isolation of the two modules and increasing the security of the system.

[0025] As shown in the attached Figure 2 and 3As shown, the MIC0_N pin of the noise reduction chip U1 is connected to the negative pole of the main MIC module, and the MIC0_P pin of the noise reduction chip U1 is connected to the positive pole of the main MIC module. The positive pole of the main MIC module is connected to the sliding end of the potentiometer RW1 through the series-connected resistor R7 and capacitor C5. The resistance side of the potentiometer RW1 is connected between the 3 interface of the terminal block Sw1 and the power ground. The sliding end of the potentiometer RW1 is connected to the 1 interface of the terminal block Sw1 through the capacitor C8. The 2 interface of the terminal block Sw1 is connected to the main microphone connector P2. The 1 pin of the terminal block Sw1 is connected to the 5V voltage source through the resistor R1. The MIC1_N pin of the noise reduction chip U1 is connected to the negative pole of the auxiliary MIC module, and the MIC1_P pin of the noise reduction chip U1 is connected to the positive pole of the auxiliary MIC module. The positive pole of the auxiliary MIC module is connected to the auxiliary microphone connector P2 through the series-connected resistor R3 and capacitor C2. The negative pole of the auxiliary MIC module is grounded through the series-connected resistor R4 and capacitor C3. The other connection point of the auxiliary microphone connector P2 is grounded. The positive pin of the auxiliary microphone connector P2 is connected to the 5V voltage source through the resistor R1. Here, the setting of the main and auxiliary microphone interfaces is applied. The microphone interfaces can be respectively connected to the corresponding microphones, thus playing a role as a backup.

[0026] The noise reduction chip U1 is also connected to a camera audio module. The LINE1_N of the noise reduction chip U1 is connected to the sliding end of the potentiometer RW2 through the resistor C24 and capacitor C9. The resistance side of the potentiometer RW2 is connected between the positive pole of the interface P4 and SGHD. The LINE1_P of the noise reduction chip U1 is connected to SGND through the capacitor C22. The far interface P4 end of the capacitor C9 is connected to SGND through the resistor C21.

[0027] The paging system applied in this application can also be connected with a video module. The noise reduction chip in this application can be externally connected to the voice prompt module in the video module, so it can be used as an application for function expansion, increasing the adaptability of this product.

[0028] As shown in the attached Figure 4 As shown, the power supply module includes a voltage regulator U3 and a voltage regulator U8. The input pin of the voltage regulator U3 is externally connected to a 12V voltage source through the interface P6. The output end of the voltage regulator U3 is connected to the input end of the voltage regulator U8. The output end of the voltage regulator U8 serves as a 3.3V voltage source, and the output end of the voltage regulator U3 serves as a 5V voltage source. In this application, a 12V voltage source is externally connected through the voltage module. The power supply module includes a 5V voltage stabilization unit and a 3.3V voltage stabilization voltage. This module can be used to achieve 12V output, 5V output, and 3.3V output.

[0029] As shown in the attached Figure 5As shown, the power supply module further includes a 1.8V voltage regulation unit. The 1.8V voltage regulation module includes a voltage regulator U9. The input of the voltage regulator U9 is connected to a 5V voltage source, and the output terminal of the voltage regulator U9 serves as a 1.8V voltage source.

[0030] Apply the 1.8V voltage regulation module to convert the 5V voltage source into a 1.8V power supply output.

[0031] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiment and will not be elaborated herein.

[0032] In the embodiments provided by the present invention, it should be understood that the disclosed device / terminal device and method can be implemented in other ways. For example, the device / terminal device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical, mechanical or other form. The unit described as a separated component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it can be located in one place or distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0033] In each embodiment of the present invention, each functional unit may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit. The above integrated unit may be implemented in the form of hardware or in the form of a software functional unit. If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, all or part of the processes in the above-described embodiment methods of the present invention may also be completed by a computer program instructing relevant hardware. The computer program may be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-described method embodiments may be implemented. Among them, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc.

[0034] The foregoing are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A voice switching system for venue calls, the system includes a power conversion module and a controller, and the power conversion module serves as the power supply for the system, characterized in that, The controller is communicatively connected to a noise reduction management module, the noise reduction management module is connected to a main MIC module and an auxiliary MIC module, and the main MIC module and the auxiliary MIC module are respectively provided with corresponding microphone interfaces.

2. The voice switching system for venue calls according to claim 1, wherein The noise reduction management module includes a noise reduction chip U1. The SDA pin of the noise reduction chip U1 is connected to the T0 pin of the controller, the SCL pin of the noise reduction chip U1 is connected to the T1 pin of the controller, and the RESET# pin of the noise reduction chip U1 is connected to the WR# pin of the controller.

3. The voice switching system for venue calls according to claim 1, wherein A MOS transistor is provided between each connection line of the noise reduction chip U1 and the controller. The source electrode of the MOS transistor is connected to the controller, and the gate electrode of the MOS transistor is connected to a 3.3V voltage source.

4. A voice switching system for venue calls according to claim 2, characterized in that, The MIC0_N pin of the noise reduction chip U1 is connected to the negative electrode of the main MIC module, and the MIC0_P pin of the noise reduction chip U1 is connected to the positive electrode of the main MIC module. The positive electrode of the main MIC module is connected to the sliding end of a potentiometer RW1 through a series-connected resistor R7 and capacitor C5. The resistance side of the potentiometer RW1 is connected between the 3 interface of a connection terminal Sw1 and the power ground. The sliding end of the potentiometer RW1 is connected to the 1 interface of the connection terminal Sw1 through a capacitor C8. The 2 interface of the connection terminal Sw1 is connected to the main microphone connector P2. The 1 pin of the connection terminal Sw1 is connected to a 5V voltage source through a resistor R1.

5. The voice switching system for venue calls according to claim 2, characterized in that The MIC1_N pin of the noise reduction chip U1 is connected to the negative electrode of the auxiliary MIC module, and the MIC1_P pin of the noise reduction chip U1 is connected to the positive electrode of the auxiliary MIC module. The positive electrode of the auxiliary MIC module is connected to the auxiliary microphone connector P2 through a series-connected resistor R3 and capacitor C2. The negative electrode of the auxiliary MIC module is grounded through a series-connected resistor R4 and capacitor C3. The other connection point of the auxiliary microphone connector P2 is grounded. The positive electrode pin of the auxiliary microphone connector P2 is connected to a 5V voltage source through a resistor R1.

6. A voice switching system for venue calls according to claim 2, characterized in that, The noise reduction chip U1 is further connected to a camera audio module. The LINE1_N of the noise reduction chip U1 is connected to the sliding end of a potentiometer RW2 through a resistor C24 and capacitor C9. The resistance side of the potentiometer RW2 is connected between the positive electrode of an interface P4 and SGHD. The LINE1_P of the noise reduction chip U1 is connected to SGND through a capacitor C22. The far interface P4 end of the capacitor C9 is connected to SGND through a resistor C21.

7. A voice switching system for venue calls according to claim 1, characterized in that, The power supply module includes a voltage regulator U3 and a voltage regulator U8. The input pin of the voltage regulator U3 is externally connected to a 12V voltage source through an interface P6. The output end of the voltage regulator U3 is connected to the input end of the voltage regulator U8. The output end of the voltage regulator U8 serves as a 3.3V voltage source, and the output end of the voltage regulator U3 serves as a 5V voltage source.

8. A voice switching system for venue calls according to claim 7, characterized in that, The power supply module further includes a 1.8V voltage regulation unit. The 1.8V voltage regulation module includes a voltage regulator U9. The input of the voltage regulator U9 is connected to the 5V voltage source, and the output end of the voltage regulator U9 serves as a 1.8V voltage source.

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