Self-service terminal power amplifier and audio microphone switching system

Abstract

The utility model relates to the field of audio microphone switching, in particular to a self-service terminal power amplifier and audio microphone switching system, which comprises a mainboard, a microphone loudspeaker and a power amplifier loudspeaker, an audio interface, a two-phase magnetically controlled switch and a three-phase magnetically controlled switch are arranged on the mainboard, and the two-phase magnetically controlled switch and the three-phase magnetically controlled switch are adjacently arranged on the mainboard in parallel. Through the simple two-phase magnetic control switch and the three-phase magnetic control switch, audio signal switching between the microphone loudspeaker and the power amplifier loudspeaker is realized, and the cost of mainboard transformation is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of audio microphone switching, in particular to a self-service terminal power amplifier and audio microphone switching system. Background Art

[0002] With the advancement of technology, more and more self-service terminal devices have integrated power amplifier and audio microphone switching modules, which can realize the switching function of power amplifier and audio microphone, improve the user experience when using self-service terminal devices, and are suitable for a variety of application scenarios.

[0003] In the currently disclosed patent technology, an integrated sound switching module needs to be added separately for audio microphone switching. The audio microphone channel interface of the self-service terminal is connected to the external audio microphone channel interface. When a remote call needs to be made using the telephone handle, it is reported to the host computer. The host computer sends a command through the serial port to start the audio microphone switching module. The two-way switching relay switches the audio microphone channel interface of the self-service terminal to the audio output channel interface of the telephone handle and the microphone input channel interface of the telephone handle. A remote call is made through the telephone handle. After the remote call ends, the two-way switching relay switches back to the initial state.

[0004] However, the above technology also has some limitations in application. For example, when applied to self-service terminal devices of the Android system, there will be problems with the motherboard being incompatible. Currently, there is no Android motherboard on the market that can adapt to the sound switching module. To realize the audio microphone switching function, it is necessary to fly wires from the motherboard or re-customize and modify the motherboard, which will increase R&D funds and high modification costs. Utility Model Content

[0005] In order to solve the problem of high cost of mainboard modification, the utility model provides a self-service terminal power amplifier and audio microphone switching system adapted to an Android mainboard.

[0006] The technical solution of this utility model is as follows:

[0007] A self-service terminal power amplifier and audio microphone switching system, comprising a motherboard microphone interface and a motherboard power amplifier interface arranged on a motherboard, a microphone speaker and a power amplifier speaker, wherein the motherboard microphone interface is electrically connected to the microphone speaker, and the motherboard power amplifier interface is electrically connected to the power amplifier speaker, and the system is characterized in that it also comprises a two-phase magnetic control switch and a three-phase magnetic control switch, wherein the two-phase magnetic control switch (3) and the three-phase magnetic control switch (4) are installed in parallel and adjacent to each other;

[0008] The two-phase magnetic control switch includes a common terminal pin and a magnetic control terminal pin, and the three-phase magnetic control switch includes a normally open pin, a normally closed pin and a three-phase magnetic control switch ground wire;

[0009] The power amplifier speaker comprises a left power amplifier speaker and a right power amplifier speaker;

[0010] The mainboard power amplifier interface includes a mainboard power amplifier interface left channel and a mainboard power amplifier interface right channel.

[0011] The negative pole of the left channel of the mainboard power amplifier interface is electrically connected to the negative pole of the left power amplifier speaker, the positive pole of the left channel of the mainboard power amplifier interface is electrically connected to the common end pin of the two-phase magnetic control switch, and the magnetic control end pin of the two-phase magnetic control switch is electrically connected to the positive pole of the left power amplifier speaker;

[0012] The negative pole of the right channel of the mainboard power amplifier interface is electrically connected to the negative pole of the microphone speaker and the negative pole of the right power amplifier speaker. The positive pole of the right channel of the mainboard power amplifier interface is connected to the ground wire of the three-phase magnetic control switch. The normally closed pin of the three-phase magnetic control switch is electrically connected to the positive pole of the microphone speaker, and the normally open pin of the three-phase magnetic control switch is electrically connected to the positive pole of the right power amplifier speaker.

[0013] Specifically, the motherboard microphone interface includes a motherboard microphone interface channel and a motherboard microphone interface ground line, both of which are electrically connected to the microphone speaker.

[0014] Specifically, the motherboard microphone interface is a 3.5mm audio port.

[0015] Specifically, the mainboard power amplifier interface is a 3.5mm audio port.

[0016] Further, it is applied to Android motherboards.

[0017] A self-service terminal power amplifier and audio microphone switching system, comprising a switching board, on which an audio input interface, a microphone speaker output interface, an amplifier speaker output interface, a two-phase magnetic control switch, and a three-phase magnetic control switch are arranged, and the two-phase magnetic control switch and the three-phase magnetic control switch are installed in parallel and adjacent to each other;

[0018] The two-phase magnetic control switch includes a common terminal pin and a magnetic control terminal pin, and the three-phase magnetic control switch includes a normally open pin, a normally closed pin and a three-phase magnetic control switch ground wire;

[0019] The audio input interface includes an audio input left channel, an audio input right channel, and an audio input ground line;

[0020] The microphone speaker output interface includes a microphone speaker output ground wire and a microphone speaker output channel;

[0021] The power amplifier speaker output interface includes a power amplifier speaker output left channel, a power amplifier speaker output right channel, and a power amplifier speaker output ground wire;

[0022] The audio input ground wire is electrically connected to the microphone speaker output ground wire and the amplifier speaker output ground wire respectively;

[0023] The audio input left channel is electrically connected to the common pin of the two-phase magnetic control switch, and the magnetic control end pin of the two-phase magnetic control switch is electrically connected to the left output channel of the power amplifier speaker;

[0024] The audio input right channel is electrically connected to the three-phase magnetic switch ground wire, the normally open pin of the three-phase magnetic switch is electrically connected to the power amplifier speaker output right channel, and the normally closed pin of the three-phase magnetic switch is electrically connected to the microphone speaker output channel.

[0025] Preferably, the audio interface is a 3.5mm audio port.

[0026] Specifically, it also includes an audio interface, a microphone speaker (2), and an amplifier speaker arranged on the main board, wherein the audio interface is electrically connected to the audio input interface of the switching board, the microphone speaker output interface is electrically connected to the microphone speaker, and the amplifier speaker output interface is electrically connected to the amplifier speaker.

[0027] Specifically, the switching board is also provided with a two-phase magnetic control switch slot and a three-phase magnetic control switch slot. The two-phase magnetic control switch is plugged into the two-phase magnetic control switch slot, and the three-phase magnetic control switch is plugged into the three-phase magnetic control switch slot.

[0028] Further, it is applied to Android motherboards.

[0029] The beneficial effects of the utility model are:

[0030] (1) The utility model is a self-service terminal power amplifier and audio microphone switching system, in which a two-phase magnetic control switch and a three-phase magnetic control switch are installed adjacent to each other on a main board, so as to realize automatic switching between a microphone speaker and a power amplifier speaker when the microphone speaker is taken or placed.

[0031] (2) By using simple two-phase magnetically controlled switches and three-phase magnetically controlled switches to achieve audio switching between the power amplifier speaker and the magnetically controlled speaker, there is no need to modify the mainboard, nor is there any need for non-standard wiring operations such as flying wires, which reduces R&D expenses and the cost of modifying the mainboard.

[0032] (3) The present invention takes into account the situations where the mainboard is provided with only one audio interface and the situation where the mainboard is provided with multiple audio interfaces, and provides two technical solutions based on the same concept, which are applicable to various situations where the power amplifier and the audio microphone are switched. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In the attached picture:

[0034] Figure 1 This is a schematic diagram of the mainboard wiring of the self-service terminal power amplifier and audio microphone switching system in the embodiment;

[0035] Figure 2 This is a wiring diagram of a switch board of a self-service terminal power amplifier and audio microphone switching system in an embodiment;

[0036] The components represented by the reference numerals in the figure are:

[0037] 1. Mainboard; 2. Microphone and speaker; 3. Two-phase magnetic switch; 4. Three-phase magnetic switch; 5. Common pin; 6. Magnetron pin; 7. Normally open pin; 8. Normally closed pin; 9. Three-phase magnetic switch ground wire; 10. Left power amplifier speaker; 11. Right power amplifier speaker; 12. Switching board; 13. Audio input interface; 14. Mainboard power amplifier interface left channel; 15. Mainboard power amplifier interface right channel; 16. Microphone speaker output interface; 17 Power amplifier speaker output interface; 18. Audio input left channel; 19. Audio input right channel; 20. Audio input ground wire; 21. Microphone speaker output ground wire; 22. Microphone speaker output channel; 23. Power amplifier speaker output left channel; 24. Power amplifier speaker output right channel; 25. Power amplifier speaker output ground wire. DETAILED DESCRIPTION

[0038] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0039] Example

[0040] This embodiment provides a self-service terminal power amplifier and audio microphone switching system, for the motherboard is provided with a motherboard microphone interface, a motherboard power amplifier interface 1, see Figure 1 , including a motherboard microphone interface and a motherboard power amplifier interface 1 arranged on the motherboard, and also including a microphone speaker 2 and a power amplifier speaker, the motherboard microphone interface is electrically connected to the microphone speaker 2, and the motherboard power amplifier interface 1 is electrically connected to the power amplifier speaker, characterized in that it also includes a two-phase magnetic control switch 3 and a three-phase magnetic control switch 4, and the two-phase magnetic control switch (3) and the three-phase magnetic control switch (4) are installed in parallel and adjacent to each other;

[0041] The two-phase magnetic control switch 3 includes a common terminal pin 5 and a magnetic control terminal pin 6, and the three-phase magnetic control switch 4 includes a normally open pin 7, a normally closed pin 9 and a three-phase magnetic control switch ground wire 8;

[0042] The power amplifier speakers include a left power amplifier speaker 10 and a right power amplifier speaker 11;

[0043] The mainboard power amplifier interface 1 includes a mainboard power amplifier interface left channel 14 and a mainboard power amplifier interface right channel 15.

[0044] The negative pole of the left channel 14 of the mainboard power amplifier interface is electrically connected to the negative pole of the left power amplifier speaker 10, the positive pole of the left channel 14 of the mainboard power amplifier interface is electrically connected to the common end pin 5 of the two-phase magnetic control switch 3, and the magnetic control end pin 6 of the two-phase magnetic control switch 3 is electrically connected to the positive pole of the left power amplifier speaker 10;

[0045] The negative pole of the right channel 15 of the mainboard power amplifier interface is electrically connected to the negative pole of the microphone speaker 2 and the negative pole of the right power amplifier speaker 11. The positive pole of the right channel 15 of the mainboard power amplifier interface is connected to the ground wire 8 of the three-phase magnetic control switch. The normally closed pin 9 of the three-phase magnetic control switch is electrically connected to the positive pole of the microphone speaker 2. The normally open pin 7 of the three-phase magnetic control switch is electrically connected to the positive pole of the right power amplifier speaker 11.

[0046] In the technical solution provided by the utility model, the type of the mainboard is an Android mainboard, the mainboard microphone interface is a 3.5mm audio port, and the mainboard power amplifier interface 1 is a 3.5mm audio port.

[0047] The motherboard microphone interface comprises a motherboard microphone interface sound channel and a motherboard microphone interface ground line, both of which are electrically connected to the microphone speaker (2).

[0048] When in use, the two-phase magnetic control switch 3 corresponds to the magnetic control switch of the microphone speaker 2. Through the magnetic field coupling between the two-phase magnetic control switch 3 and the three-phase magnetic control switch 4, the two-phase magnetic control switch 3 can act on the three-phase magnetic control switch 4, that is, the three-phase magnetic control switch 4 is controlled by the two-phase magnetic control switch 3, thereby realizing the switching between the microphone speaker 2 and the power amplifier speaker. When the microphone speaker 2 is placed on the microphone holder, the two-phase magnetic control switch 3 corresponding to the microphone speaker 2 acts on the three-phase magnetic control switch 4, and the power amplifier speaker starts to work. At this time, the normally open circuit of the three-phase magnetic control switch 4 is connected, and the circuit corresponding to the left power amplifier speaker 10 and the right power amplifier speaker 11 is turned on, and the audio signal of the mainboard is transmitted to the left power amplifier speaker 10 and the right power amplifier speaker 11. The left power amplifier speaker 10 and the right power amplifier speaker 11 have sound, and the microphone speaker 2 has no sound; when the microphone speaker 2 is picked up, the two-phase magnetic control switch 3 corresponding to the microphone speaker 2 acts on the three-phase magnetic control switch 4, the normally open circuit of the three-phase magnetic control switch 4 is disconnected, and the normally closed circuit is connected. At this time, the circuit where the left power amplifier speaker 10 and the right power amplifier speaker 11 are located is closed, and the left power amplifier speaker 10 and the right power amplifier speaker 11 have no sound. The audio signal of the mainboard is transmitted to the microphone speaker 2 through the normally closed pin 9 of the three-phase magnetic control switch 4, and the microphone speaker 2 has sound.

[0049] Automatic audio switching between the microphone speaker 2 and the power amplifier speaker is achieved through the magnetic field effect between the two-phase magnetic control switch 3 and the three-phase magnetic control switch 4.

[0050] In another embodiment, when only one audio interface is provided on the mainboard, a switching board 12 is included, on which an audio input interface 13, a microphone speaker output interface 16, an amplifier speaker output interface 17, a two-phase magnetic control switch 3, and a three-phase magnetic control switch 4 are provided, and the two-phase magnetic control switch 3 and the three-phase magnetic control switch 4 are installed in parallel and adjacent to each other;

[0051] The two-phase magnetic control switch 3 includes a common terminal pin 5 and a magnetic control terminal pin 6, and the three-phase magnetic control switch 4 includes a normally open pin 7, a normally closed pin 9 and a three-phase magnetic control switch ground wire 8;

[0052] The audio input interface 13 includes an audio input left channel 18, an audio input right channel 19, and an audio input ground line 20;

[0053] The microphone speaker output interface 16 includes a microphone speaker output ground line 21 and a microphone speaker output channel 22;

[0054] The power amplifier speaker output interface 17 includes a power amplifier speaker output left channel 23, a power amplifier speaker output right channel 24 and a power amplifier speaker output ground line 25;

[0055] The audio input ground wire 20 is electrically connected to the microphone speaker output ground wire 21 and the amplifier speaker output ground wire 25 respectively;

[0056] The audio input left channel 18 is electrically connected to the common pin 5 of the two-phase magnetic control switch 3, and the magnetic control end pin 6 of the two-phase magnetic control switch 3 is electrically connected to the power amplifier speaker output left channel 23;

[0057] The audio input right channel 19 is electrically connected to the three-phase magnetic switch ground wire 8, the normally open pin 7 of the three-phase magnetic switch 4 is electrically connected to the power amplifier speaker output right channel 24, and the normally closed pin 9 of the three-phase magnetic switch 4 is electrically connected to the microphone speaker output channel 22.

[0058] When it is necessary to play the sound of the microphone speaker 2, the normally closed pin 9 of the three-phase magnetic control switch 4 is closed, the normally open pin 7 of the three-phase magnetic control switch 4 is connected, and the two-phase magnetic control switch 3 is opened; when it is necessary to switch to the power amplifier speaker, the normally closed pin 9 of the three-phase magnetic control switch 4 is connected, and the normally open pins 7 of the two-phase magnetic control switch 3 and the three-phase magnetic control switch 4 are closed. Through simple two-phase magnetic control switch 3 and three-phase magnetic control switch 4, the audio signal switching between the microphone speaker 2 and the power amplifier speaker is realized.

[0059] In this embodiment, the motherboard type is an Android motherboard, and the audio interface is a 3.5mm audio port.

[0060] It also includes an audio interface, a microphone speaker 2, and an amplifier speaker arranged on the main board. The audio interface is electrically connected to the audio input interface 13 of the switching board 12, the microphone speaker output interface 16 is electrically connected to the microphone speaker 2, and the amplifier speaker output interface 17 is electrically connected to the amplifier speaker.

[0061] The switching board 12 is also provided with a two-phase magnetic control switch slot and a three-phase magnetic control switch slot. The two-phase magnetic control switch 3 is plug-connected to the two-phase magnetic control switch slot, and the three-phase magnetic control switch 4 is plug-connected to the three-phase magnetic control switch slot.

[0062] The 3.5mm audio port on the mainboard is connected to the audio input interface 13 of the switch board 12 through an audio cable, so that the audio signal generated by the mainboard can be transmitted to the switch board 12; the microphone speaker output interface 16 set on the switch board 12 is connected to the microphone speaker 2 through an audio cable, and the power amplifier speaker output interface 17 set on the switch board 12 is connected to the power amplifier speaker through an audio cable. The audio signal switching between the microphone speaker 2 and the power amplifier speaker is realized through the two-phase magnetic control switch 3 and the three-phase magnetic control switch 4 on the switch board 12.

[0063] The technical solution provided by the utility model is applicable to any Android motherboard with an audio output interface, and other motherboards with audio interfaces can also be adapted. Compared with adding an integrated sound switching module separately on the motherboard, the cost of this technical solution is only one-fifth of the sound switching module solution, saving the cost of motherboard modification and making the produced products more standardized.

Claims

1. A self-service terminal power amplifier and audio microphone switching system, comprising a motherboard microphone interface and a motherboard power amplifier interface (1) arranged on a motherboard, and also comprising a microphone speaker (2) and a power amplifier speaker, wherein the motherboard microphone interface is electrically connected to the microphone speaker (2), and the motherboard power amplifier interface (1) is electrically connected to the power amplifier speaker, characterized in that: It also includes a two-phase magnetic control switch (3) and a three-phase magnetic control switch (4), wherein the two-phase magnetic control switch (3) and the three-phase magnetic control switch (4) are installed in parallel and adjacent to each other; The two-phase magnetic control switch (3) comprises a common end pin (5) and a magnetic control end pin (6), and the three-phase magnetic control switch (4) comprises a normally open pin (7), a normally closed pin (9) and a three-phase magnetic control switch ground wire (8); The power amplifier speaker comprises a left power amplifier speaker (10) and a right power amplifier speaker (11); The mainboard power amplifier interface (1) comprises a mainboard power amplifier interface left channel (14) and a mainboard power amplifier interface right channel (15). The negative pole of the left sound channel (14) of the mainboard power amplifier interface is electrically connected to the negative pole of the left power amplifier speaker (10), the positive pole of the left sound channel (14) of the mainboard power amplifier interface is electrically connected to the common end pin (5) of the two-phase magnetic control switch (3), and the magnetic control end pin (6) of the two-phase magnetic control switch (3) is electrically connected to the positive pole of the left power amplifier speaker (10); The negative pole of the right channel (15) of the mainboard power amplifier interface is electrically connected to the negative pole of the microphone speaker (2) and the negative pole of the right power amplifier speaker (11); the positive pole of the right channel (15) of the mainboard power amplifier interface is connected to the ground wire (8) of the three-phase magnetic control switch; the normally closed pin (9) of the three-phase magnetic control switch is electrically connected to the positive pole of the microphone speaker (2); and the normally open pin (7) of the three-phase magnetic control switch is electrically connected to the positive pole of the right power amplifier speaker (11).

2. A self-service terminal power amplifier and audio microphone switching system according to claim 1, characterized in that: The motherboard microphone interface comprises a motherboard microphone interface sound channel and a motherboard microphone interface ground line, both of which are electrically connected to the microphone speaker (2).

3. The self-service terminal power amplifier and audio microphone switching system according to claim 1, characterized in that: The motherboard microphone interface is a 3.5mm audio port.

4. The self-service terminal power amplifier and audio microphone switching system according to claim 1, characterized in that: The mainboard power amplifier interface (1) is a 3.5 mm audio port.

5. The self-service terminal power amplifier and audio microphone switching system according to claim 1, characterized in that: Applicable to Android motherboard.

6. A self-service terminal power amplifier and audio microphone switching system, characterized in that: The invention comprises a switching board (12), on which an audio input interface (13), a microphone speaker output interface (16), an amplifier speaker output interface (17), a two-phase magnetic control switch (3), and a three-phase magnetic control switch (4) are arranged, and the two-phase magnetic control switch (3) and the three-phase magnetic control switch (4) are installed in parallel and adjacent to each other; The two-phase magnetic control switch (3) comprises a common end pin (5) and a magnetic control end pin (6), and the three-phase magnetic control switch (4) comprises a normally open pin (7), a normally closed pin (9) and a three-phase magnetic control switch ground wire (8); The audio input interface (13) comprises an audio input left channel (18), an audio input right channel (19), and an audio input ground line (20); The microphone speaker output interface (16) includes a microphone speaker output ground line (21) and a microphone speaker output channel (22); The power amplifier speaker output interface (17) includes a power amplifier speaker output left channel (23), a power amplifier speaker output right channel (24), and a power amplifier speaker output ground wire (25); The audio input ground wire (20) is electrically connected to the microphone speaker output ground wire (21) and the amplifier speaker output ground wire (25) respectively; The audio input left channel (18) is electrically connected to the common end pin (5) of the two-phase magnetic control switch (3), and the magnetic control end pin (6) of the two-phase magnetic control switch (3) is electrically connected to the power amplifier speaker output left channel (23); The audio input right channel (19) is electrically connected to the three-phase magnetic switch ground wire (8), the normally open pin (7) of the three-phase magnetic switch (4) is electrically connected to the power amplifier speaker output right channel (24), and the normally closed pin (9) of the three-phase magnetic switch (4) is electrically connected to the microphone speaker output channel (22).

7. A self-service terminal power amplifier and audio microphone switching system according to claim 6, characterized in that: The audio input interface (13) is a 3.5 mm audio port.

8. The self-service terminal power amplifier and audio microphone switching system according to claim 6, characterized in that: It also includes an audio interface, a microphone speaker (2), and an amplifier speaker arranged on the main board, wherein the audio interface is electrically connected to the audio input interface (13) of the switching board (12), the microphone speaker output interface (16) is electrically connected to the microphone speaker (2), and the amplifier speaker output interface (17) is electrically connected to the amplifier speaker.

9. The self-service terminal power amplifier and audio microphone switching system according to claim 6, characterized in that: The switching board (12) is also provided with a two-phase magnetic control switch slot and a three-phase magnetic control switch slot, the two-phase magnetic control switch (3) is plug-connected to the two-phase magnetic control switch slot, and the three-phase magnetic control switch (4) is plug-connected to the three-phase magnetic control switch slot.

10. The self-service terminal power amplifier and audio microphone switching system according to claim 6, characterized in that: Applicable to Android motherboard.

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