CN220965115U - Headset earphone control circuit - Google Patents
Headset earphone control circuit Download PDFInfo
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- CN220965115U CN220965115U CN202322619692.5U CN202322619692U CN220965115U CN 220965115 U CN220965115 U CN 220965115U CN 202322619692 U CN202322619692 U CN 202322619692U CN 220965115 U CN220965115 U CN 220965115U
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Abstract
The utility model relates to a headset control circuit of a headset microphone, which comprises a main control module and a USB protocol module, wherein the USB protocol module is connected with a USB interface of a computer end, the USB protocol module is in bidirectional communication connection with the main control module, a mobile phone end is in bidirectional communication connection with the main control module, the main control module outputs signals to a loudspeaker, the main control module receives signals from a microphone rod, and the main control module is compatible with a 2.4G transmission mode and a Bluetooth transmission mode. The 2.4G and BT Bluetooth can be simultaneously used on line, the circuit is simple, the cost is low, the low delay is realized in the 2.4G mode, and better use experience can be provided for users.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to a headset control circuit of a headset microphone.
Background
With the popularization of computers and mobile phones, the demands of headset microphone headphones are increasing, so that users can conduct conversations in video chat or games, and the headset has good use experience for the users. In the prior art, the earphone is usually connected in one of a Bluetooth mode and a 2.4G mode, so that the same product cannot be applied to terminals with different connection modes, and a user needs to purchase two different earphone products, which brings inconvenience to the user.
Disclosure of utility model
The utility model provides a headset control circuit of a headset microphone, which aims to solve the problem that the existing headset cannot be compatible with Bluetooth and 2.4G modes at the same time.
The utility model provides a headset-type microphone earphone control circuit which comprises a main control module and a USB protocol module, wherein the USB protocol module is connected with a USB interface of a computer end, the USB protocol module is in bidirectional communication connection with the main control module, a mobile phone end is in bidirectional communication connection with the main control module, the main control module outputs signals to a loudspeaker, the main control module receives signals from a microphone rod, and the main control module is compatible with a 2.4G transmission mode and a Bluetooth transmission mode.
As a further improvement of the utility model, the main control module comprises a main control chip U2 and a radio frequency chip U3, wherein a pin 47 of the main control chip U2 is connected with a pin 3 of the crystal oscillator U1, a pin 48 of the main control chip U2 is connected with a pin 1 of the crystal oscillator U1, a pin 47 of the main control chip U2 is connected with one end of a capacitor C1, a pin 48 of the main control chip U2 is connected with one end of a capacitor C8, one end of a resistor R2 is connected with one end of the capacitor C1, the other end of the resistor R2 is connected with one end of the capacitor C8, and the other end of the capacitor C1, the other ends of the capacitor C8 and the pins 2 and 3 of the crystal oscillator U1 are all grounded with signals; the 5 pin of the radio frequency chip U3 is connected with one end of a capacitor C17, the other end of the capacitor C17 is connected with one end of an inductor L4, the other end of the inductor L4 is connected with one end of a capacitor C16, the other end of the capacitor C16 is connected with the 2 pin of the main control chip U2, the 4 pin of the radio frequency chip U3 is connected with one end of a capacitor C22, the 6 pin of the radio frequency chip U3 is connected with one end of a capacitor C12, the other end of the capacitor C12 and the other end of the capacitor C22 are grounded, the 1 pin of the radio frequency chip U3 is connected with one end of a capacitor C9, the other end of the capacitor C9 is connected with one end of a capacitor C10, the other end of the capacitor C10 is connected with the 1 pin of a transmitting antenna ANT1, the 1 pin of antenna package A1 is connected with one end of electric capacity C32, the other end of electric capacity C32 is connected with one end of electric capacity C10, the 2 pin of antenna package A1 is grounded, the 3 pin of radio frequency chip U3 is connected with one end of electric capacity C20, the other end of electric capacity C20 is connected with one end of electric capacity C21, the other end of electric capacity C21 is connected with 1 pin of transmitting antenna ANT2, the 1 pin of antenna package A2 is connected with one end of electric capacity C37, the other end of electric capacity C37 is connected with one end of electric capacity C21, the 2 pin of antenna package A2 is grounded, the 3 pin of antenna package A2 is grounded, the 2 pin of radio frequency chip U2 is grounded.
As a further improvement of the utility model, the main control module further comprises a microphone rod circuit and a speaker circuit, wherein the microphone rod circuit and the speaker circuit are both connected with the main control chip U2, the microphone rod circuit comprises a microphone rod seat JK2 and a toggle switch S2, pin 15 of the main control chip U2 is connected with one end of a resistor R29, the other end of the resistor R29 is connected with one end of a capacitor C33, the other end of the capacitor C33 is grounded, one end of the resistor R31 is connected with the other end of the resistor R29, the other end of the resistor R31 is connected with one end of a capacitor C35, the other end of the capacitor C35 is connected with one end of a resistor R30, the other end of the resistor R30 is connected with signal ground, pin 16 of the main control chip U2 is connected with one end of a capacitor C34, the other end of the capacitor C34 is connected with pins 3 and 6 of the microphone rod seat JK2, pin 17 of the main control chip U2 is connected with one end of a capacitor C36, the other end of the capacitor C36 is connected with pins 1 and 2 of the capacitor C33, pin 31 of the main control chip U2 is connected with the toggle switch S2, one end of the capacitor C46 is connected with the other end of the capacitor C31 is connected with signal ground; the loudspeaker circuit comprises a left sound channel and a right sound channel, a 26 pin of a main control chip U2 is connected with the positive electrode of the left sound channel, a 25 pin of the main control chip U2 is connected with the negative electrode of the left sound channel, a 27 pin of the main control chip U2 is connected with the positive electrode of the right sound channel, a 28 pin of the main control chip U2 is connected with the negative electrode of the right sound channel, one end of a capacitor C26 is connected with the positive electrode of the left sound channel, the other end of the capacitor C26 is connected with the negative electrode of the left sound channel, one end of a capacitor C27 is connected with the positive electrode of the right sound channel, and the other end of the capacitor C27 is connected with the negative electrode of the right sound channel.
As a further improvement of the utility model, the main control module further comprises an indicator light circuit and a volume control circuit, wherein the indicator light circuit and the volume control circuit are both connected with the main control chip U2, the indicator light circuit comprises a light emitting diode LED1, a light emitting diode LED2 and a light emitting diode LED3, a pin 7 of the main control chip U2 is connected with one end of a resistor R9, the other end of the resistor R9 is connected with the positive electrode of the light emitting diode LED1, a pin 6 of the main control chip U2 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with the positive electrode of the light emitting diode LED2, a pin 5 of the main control chip U2 is connected with one end of a resistor R13, and the other end of the resistor R13 is connected with the positive electrode of the light emitting diode LED3, and the negative electrode of the light emitting diode LED1, the negative electrode of the light emitting diode LED2 and the negative electrode of the light emitting diode LED3 are all grounded; the volume control circuit comprises an adjusting switch SW2, wherein a 1 pin of the adjusting switch SW2 is connected with a 32 pin of the main control chip U2, and a 3 pin of the adjusting switch SW2 is connected with a 33 pin of the main control chip U2.
As a further improvement of the utility model, the main control module further comprises a power supply circuit, wherein the power supply circuit comprises a communication charging interface JK1, a protection chip U4, a management chip U5 and an electric energy switch SW1, pins A4, B4, A9 and B9 of the communication charging interface JK1 are connected with external 5V voltage, one end of a resistor R6 is connected with an A6 pin of the communication charging interface JK1, the other end of the resistor R6 is connected with a 12 pin of the main control chip U2, one end of a resistor R7 is connected with an A7 pin of the communication charging interface JK1, and the other end of the resistor R7 is connected with an 11 pin of the main control chip U2; the 3 pin of the protection chip U4 is connected with external 5V voltage, the 4 pin of the protection chip U4 is connected with the 4 pin of the management chip U5, the 3 pin of the management chip U5 is connected with the positive electrode of the battery, the negative electrode of the battery is connected with one end of the capacitor C42, the other end of the capacitor C42 outputs VCC4BAT voltage, and the 1 pin of the management chip U5 is connected with the 13 pin of the main control chip U2; the 2 pin of the electric energy switch SW1 is connected with VCC4BAT voltage, the 1 pin of the electric energy switch SW1 is connected with one end of a resistor R33, the other end of the resistor R33 is connected with the base electrode of a MOS tube Q2, the emitter electrode of the MOS tube Q2 is grounded, the collector electrode of the MOS tube Q2 is connected with one end of a resistor R49, the other end of the resistor R39 outputs VCC3SYS voltage, and the collector electrode of the MOS tube Q2 is connected with the 44 pin of a main control chip U2.
As a further improvement of the utility model, the USB protocol module comprises a protocol chip U3 and a radio frequency chip U2, wherein a pin 38 of the protocol chip U3 is connected with a pin 3 of the crystal oscillator U2, a pin 39 of the protocol chip U3 is connected with a pin 1 of the crystal oscillator U2, a pin 38 of the protocol chip U3 is connected with one end of a capacitor C101, a pin 39 of the protocol chip U3 is connected with one end of a capacitor C106, one end of a resistor R109 is connected with one end of the capacitor C101, the other end of the resistor R109 is connected with one end of the capacitor C106, and the other end of the capacitor C101, the other end of the capacitor C106 and the pins 2 and 3 of the crystal oscillator U2 are all grounded with signals; the 5 pin of the radio frequency chip U2 is connected with one end of a capacitor C115, the other end of the capacitor C115 is connected with one end of an inductor L104, the other end of the inductor L104 is connected with one end of a capacitor C114, the other end of the capacitor C14 is connected with the 1 pin of a protocol chip U3, the 4 pin of the radio frequency chip U2 is connected with one end of a capacitor C120, the 6 pin of the radio frequency chip U2 is connected with one end of a capacitor C112, the other end of the capacitor C112 is grounded with the other end of the capacitor C120, the 1 pin of the radio frequency chip U2 is connected with one end of a capacitor C109, the other end of the capacitor C109 is connected with one end of a capacitor C110, the other end of the capacitor C110 is connected with the 1 pin of a transmitting antenna ANT3, the 1 pin of an antenna mounting part A3 is connected with one end of a capacitor C107, the other end of electric capacity C107 is connected with the one end of electric capacity C110, the 2 pin of antenna mounting spare A3 is grounded, the 3 pin of radio frequency chip U2 is connected with the one end of electric capacity C121, the other end of electric capacity C121 is connected with the one end of electric capacity C122, the other end of electric capacity C122 is connected with the 1 pin of transmitting antenna ANT4, the 1 pin of antenna mounting spare A4 is connected with the one end of electric capacity C123, the other end of electric capacity C123 is connected with the one end of electric capacity C122, the 2 pin of antenna mounting spare A4 is grounded, the 3 pin of antenna mounting spare A4 is grounded, the 2 pin of radio frequency chip U2 is grounded, transmitting antenna ANT1 and transmitting antenna ANT3 communicate, transmitting antenna ANT2 and transmitting antenna ANT4 communicate.
As a further improvement of the present utility model, the USB protocol module further includes a power circuit, where the power circuit includes a management chip U6, pins 1 and 3 of the management chip U6 are connected to an external voltage VBUS, pin 5 of the management chip U6 is connected to one end of a capacitor C130, the other end of the capacitor C130 is grounded, and one end of the capacitor C130 outputs a VCC4BAT voltage.
As a further improvement of the present utility model, the USB protocol module further includes a virtual sound effect circuit, where the virtual sound effect circuit includes a virtual sound effect chip U4, pin 6 of the virtual sound effect chip U4 is connected to VCC4BAT voltage, pin 7 of the virtual sound effect chip U4 is connected to one end of a resistor R101, the other end of the resistor R101 is connected to VCC4BAT voltage, one end of a resistor R103 is connected to one end of the resistor R101, the other end of the resistor R103 is grounded, pin 8 of the virtual sound effect chip U4 is connected to pin 3 of the protocol chip U3, and pin 9 of the virtual sound effect chip U4 is connected to pin 2 of the protocol chip U3.
As a further improvement of the utility model, the USB protocol module further comprises a USB interface J1, wherein a 1 pin of the USB interface J1 is connected with an external voltage VBUS, a 2 pin of the USB interface J1 is connected with one end of a resistor R105, the other end of the resistor R105 is connected with a 10 pin of a protocol chip U3, a 3 pin of the USB interface J1 is connected with one end of a resistor R106, the other end of the resistor R106 is connected with an 11 pin of the protocol chip U3, 4 pins and 6 pins of the USB interface J1 are grounded, and a 5 pin of the USB interface J1 is grounded.
As a further improvement of the utility model, the USB protocol module further includes a matching switch circuit and an indication circuit, both of which are connected with the protocol chip U3, the matching switch circuit includes a pairing key SW1, one end of the pairing key SW1 is connected with the 34 pin of the protocol chip U3, and the other end of the pairing key SW1 is grounded with a signal; the indicating circuit comprises a light emitting diode D1, the negative electrode of the light emitting diode D1 is grounded, the positive electrode of the light emitting diode D1 is connected with one end of a resistor R102, and the other end of the resistor R102 is connected with a 24 pin of a protocol chip U3.
The beneficial effects of the utility model are as follows: the 2.4G and BT Bluetooth can be simultaneously used on line, the circuit is simple, the cost is low, the low delay is realized in the 2.4G mode, and better use experience can be provided for users.
Drawings
FIG. 1 is a diagram of the connection between modules of the present utility model;
FIG. 2 is a circuit diagram of a master control chip in a master control module according to the present utility model;
FIG. 3 is a circuit diagram of a radio frequency chip in a main control module of the present utility model;
FIG. 4 is a circuit diagram of the miaow pole circuit in the master control module of the present utility model;
fig. 5 is a circuit connection diagram of a speaker circuit in the main control module of the present utility model;
FIG. 6 is a circuit diagram of an indicator light circuit in a main control module of the present utility model;
FIG. 7 is a circuit diagram of a volume control circuit in a master control module according to the present utility model;
FIG. 8 is a circuit diagram of a communication charging interface in a main control module of the present utility model;
FIG. 9 is a circuit diagram of a chip protection module in the main control module of the present utility model;
FIG. 10 is a circuit diagram of a management chip in a master control module according to the present utility model;
FIG. 11 is a circuit diagram of a power switch in a main control module of the present utility model;
FIG. 12 is a circuit diagram of a protocol chip in a USB protocol module according to the present utility model;
FIG. 13 is a circuit diagram of a radio frequency chip in a USB protocol module of the present utility model;
FIG. 14 is a circuit diagram of a power circuit in a USB protocol module of the present utility model;
FIG. 15 is a circuit diagram of a virtual sound effect circuit in a USB protocol module of the present utility model;
FIG. 16 is a circuit diagram of a USB interface in a USB protocol module according to the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
As shown in fig. 1-16, the utility model provides a headset control circuit of a headset, which comprises a main control module and a USB protocol module, wherein the USB protocol module is connected to a USB interface of a computer end, the USB protocol module is in bidirectional communication connection with the main control module, a mobile phone end is in bidirectional communication connection with the main control module, the main control module outputs signals to a loudspeaker, the main control module receives signals from a microphone rod, and the main control module is compatible with a 2.4G transmission mode and a bluetooth transmission mode.
As an embodiment of the utility model, the main control module comprises a main control chip U2 and a radio frequency chip U3, wherein a pin 47 of the main control chip U2 is connected with a pin 3 of the crystal oscillator U1, a pin 48 of the main control chip U2 is connected with a pin 1 of the crystal oscillator U1, a pin 47 of the main control chip U2 is connected with one end of a capacitor C1, a pin 48 of the main control chip U2 is connected with one end of a capacitor C8, one end of a resistor R2 is connected with one end of the capacitor C1, the other end of the resistor R2 is connected with one end of the capacitor C8, and the other end of the capacitor C1, the other end of the capacitor C8 and the pins 2 and 3 of the crystal oscillator U1 are all grounded with signals; the 5 pin of the radio frequency chip U3 is connected with one end of a capacitor C17, the other end of the capacitor C17 is connected with one end of an inductor L4, the other end of the inductor L4 is connected with one end of a capacitor C16, the other end of the capacitor C16 is connected with the 2 pin of the main control chip U2, the 4 pin of the radio frequency chip U3 is connected with one end of a capacitor C22, the 6 pin of the radio frequency chip U3 is connected with one end of a capacitor C12, the other end of the capacitor C12 and the other end of the capacitor C22 are grounded, the 1 pin of the radio frequency chip U3 is connected with one end of a capacitor C9, the other end of the capacitor C9 is connected with one end of a capacitor C10, the other end of the capacitor C10 is connected with the 1 pin of a transmitting antenna ANT1, the 1 pin of antenna package A1 is connected with one end of electric capacity C32, the other end of electric capacity C32 is connected with one end of electric capacity C10, the 2 pin of antenna package A1 is grounded, the 3 pin of radio frequency chip U3 is connected with one end of electric capacity C20, the other end of electric capacity C20 is connected with one end of electric capacity C21, the other end of electric capacity C21 is connected with 1 pin of transmitting antenna ANT2, the 1 pin of antenna package A2 is connected with one end of electric capacity C37, the other end of electric capacity C37 is connected with one end of electric capacity C21, the 2 pin of antenna package A2 is grounded, the 3 pin of antenna package A2 is grounded, the 2 pin of radio frequency chip U2 is grounded.
As another embodiment of the present utility model, the main control module further includes a microphone circuit and a speaker circuit, where the microphone circuit and the speaker circuit are both connected to the main control chip U2, the microphone circuit includes a microphone holder JK2 and a toggle switch S2, pin 15 of the main control chip U2 is connected to one end of a resistor R29, the other end of the resistor R29 is connected to one end of a capacitor C33, the other end of the capacitor C33 is grounded, one end of the resistor R31 is connected to the other end of the resistor R29, the other end of the resistor R31 is connected to one end of a capacitor C35, the other end of the capacitor C35 is connected to one end of a resistor R30, the other end of the resistor R30 is connected to signal ground, pin 16 of the main control chip U2 is connected to one end of a capacitor C34, the other end of the capacitor C34 is connected to pins 3 and 6 of the microphone holder JK2, pin 17 of the main control chip U2 is connected to one end of a capacitor C36, the other end of the capacitor C36 is connected to pins 1 and 2 of the microphone holder JK2, pin 31 of the main control chip U2 is connected to the toggle switch S2, one end of the capacitor C46 is connected to signal ground, and the other end of the capacitor C46 is connected to the other end of the capacitor C31; the loudspeaker circuit comprises a left sound channel and a right sound channel, a 26 pin of a main control chip U2 is connected with the positive electrode of the left sound channel, a 25 pin of the main control chip U2 is connected with the negative electrode of the left sound channel, a 27 pin of the main control chip U2 is connected with the positive electrode of the right sound channel, a 28 pin of the main control chip U2 is connected with the negative electrode of the right sound channel, one end of a capacitor C26 is connected with the positive electrode of the left sound channel, the other end of the capacitor C26 is connected with the negative electrode of the left sound channel, one end of a capacitor C27 is connected with the positive electrode of the right sound channel, and the other end of the capacitor C27 is connected with the negative electrode of the right sound channel.
As another embodiment of the present utility model, the main control module further includes an indicator light circuit and a volume control circuit, where the indicator light circuit and the volume control circuit are both connected to the main control chip U2, the indicator light circuit includes a light emitting diode LED1, a light emitting diode LED2, and a light emitting diode LED3, a pin 7 of the main control chip U2 is connected to one end of a resistor R9, the other end of the resistor R9 is connected to the positive electrode of the light emitting diode LED1, a pin 6 of the main control chip U2 is connected to one end of a resistor R11, the other end of the resistor R11 is connected to the positive electrode of the light emitting diode LED2, a pin 5 of the main control chip U2 is connected to one end of a resistor R13, and the other end of the resistor R13 is connected to the positive electrode of the light emitting diode LED3, and the negative electrode of the light emitting diode LED1, the negative electrode of the light emitting diode LED2, and the negative electrode of the light emitting diode LED3 are all grounded with signals; the volume control circuit comprises an adjusting switch SW2, wherein a 1 pin of the adjusting switch SW2 is connected with a 32 pin of the main control chip U2, and a 3 pin of the adjusting switch SW2 is connected with a 33 pin of the main control chip U2.
As another embodiment of the utility model, the main control module further comprises a power supply circuit, wherein the power supply circuit comprises a communication charging interface JK1, a protection chip U4, a management chip U5 and an electric energy switch SW1, pins A4, B4, A9 and B9 of the communication charging interface JK1 are connected with external 5V voltage, one end of a resistor R6 is connected with an A6 pin of the communication charging interface JK1, the other end of the resistor R6 is connected with a 12 pin of the main control chip U2, one end of a resistor R7 is connected with an A7 pin of the communication charging interface JK1, and the other end of the resistor R7 is connected with an 11 pin of the main control chip U2; the 3 pin of the protection chip U4 is connected with external 5V voltage, the 4 pin of the protection chip U4 is connected with the 4 pin of the management chip U5, the 3 pin of the management chip U5 is connected with the positive electrode of the battery, the negative electrode of the battery is connected with one end of the capacitor C42, the other end of the capacitor C42 outputs VCC4BAT voltage, and the 1 pin of the management chip U5 is connected with the 13 pin of the main control chip U2; the 2 pin of the electric energy switch SW1 is connected with VCC4BAT voltage, the 1 pin of the electric energy switch SW1 is connected with one end of a resistor R33, the other end of the resistor R33 is connected with the base electrode of a MOS tube Q2, the emitter electrode of the MOS tube Q2 is grounded, the collector electrode of the MOS tube Q2 is connected with one end of a resistor R49, the other end of the resistor R39 outputs VCC3SYS voltage, and the collector electrode of the MOS tube Q2 is connected with the 44 pin of a main control chip U2.
As another embodiment of the utility model, the USB protocol module comprises a protocol chip U3 and a radio frequency chip U2, wherein a 38 pin of the protocol chip U3 is connected with a3 pin of the crystal oscillator U2, a 39 pin of the protocol chip U3 is connected with a1 pin of the crystal oscillator U2, a 38 pin of the protocol chip U3 is connected with one end of a capacitor C101, a 39 pin of the protocol chip U3 is connected with one end of a capacitor C106, one end of a resistor R109 is connected with one end of the capacitor C101, the other end of the resistor R109 is connected with one end of the capacitor C106, and the other end of the capacitor C101, the 2 pins and the 3 pins of the crystal oscillator U2 are all grounded with signals; the 5 pin of the radio frequency chip U2 is connected with one end of a capacitor C115, the other end of the capacitor C115 is connected with one end of an inductor L104, the other end of the inductor L104 is connected with one end of a capacitor C114, the other end of the capacitor C14 is connected with the 1 pin of a protocol chip U3, the 4 pin of the radio frequency chip U2 is connected with one end of a capacitor C120, the 6 pin of the radio frequency chip U2 is connected with one end of a capacitor C112, the other end of the capacitor C112 is grounded with the other end of the capacitor C120, the 1 pin of the radio frequency chip U2 is connected with one end of a capacitor C109, the other end of the capacitor C109 is connected with one end of a capacitor C110, the other end of the capacitor C110 is connected with the 1 pin of a transmitting antenna ANT3, the 1 pin of an antenna mounting part A3 is connected with one end of a capacitor C107, the other end of electric capacity C107 is connected with the one end of electric capacity C110, the 2 pin of antenna mounting spare A3 is grounded, the 3 pin of radio frequency chip U2 is connected with the one end of electric capacity C121, the other end of electric capacity C121 is connected with the one end of electric capacity C122, the other end of electric capacity C122 is connected with the 1 pin of transmitting antenna ANT4, the 1 pin of antenna mounting spare A4 is connected with the one end of electric capacity C123, the other end of electric capacity C123 is connected with the one end of electric capacity C122, the 2 pin of antenna mounting spare A4 is grounded, the 3 pin of antenna mounting spare A4 is grounded, the 2 pin of radio frequency chip U2 is grounded, transmitting antenna ANT1 and transmitting antenna ANT3 communicate, transmitting antenna ANT2 and transmitting antenna ANT4 communicate.
As another embodiment of the present utility model, the USB protocol module further includes a power circuit, where the power circuit includes a management chip U6, pins 1 and 3 of the management chip U6 are connected to an external voltage VBUS, pin 5 of the management chip U6 is connected to one end of a capacitor C130, the other end of the capacitor C130 is connected to a signal ground, and one end of the capacitor C130 outputs a VCC4BAT voltage.
As another embodiment of the present utility model, the USB protocol module further includes a virtual sound effect circuit, where the virtual sound effect circuit includes a virtual sound effect chip U4, a6 pin of the virtual sound effect chip U4 is connected to VCC4BAT voltage, a 7 pin of the virtual sound effect chip U4 is connected to one end of a resistor R101, another end of the resistor R101 is connected to VCC4BAT voltage, one end of a resistor R103 is connected to one end of the resistor R101, another end of the resistor R103 is grounded, an 8 pin of the virtual sound effect chip U4 is connected to 3 pin of the protocol chip U3, and a 9 pin of the virtual sound effect chip U4 is connected to 2 pin of the protocol chip U3.
As another embodiment of the present utility model, the USB protocol module further includes a USB interface J1, the 1 pin of the USB interface J1 is connected to an external voltage VBUS, the 2 pin of the USB interface J1 is connected to one end of a resistor R105, the other end of the resistor R105 is connected to the 10 pin of the protocol chip U3, the 3 pin of the USB interface J1 is connected to one end of a resistor R106, the other end of the resistor R106 is connected to the 11 pin of the protocol chip U3, the 4 pin and the 6 pin of the USB interface J1 are grounded, and the 5 pin of the USB interface J1 is grounded.
As another embodiment of the present utility model, the USB protocol module further includes a matching switch circuit and an indication circuit, where the matching switch circuit and the indication circuit are both connected to the protocol chip U3, the matching switch circuit includes a pairing key SW1, one end of the pairing key SW1 is connected to the 34 pin of the protocol chip U3, and the other end of the pairing key SW1 is grounded; the indicating circuit comprises a light emitting diode D1, the negative electrode of the light emitting diode D1 is grounded, the positive electrode of the light emitting diode D1 is connected with one end of a resistor R102, and the other end of the resistor R102 is connected with a 24 pin of a protocol chip U3.
The utility model provides a headset-type microphone earphone control circuit, which can stably transmit low delay, the adopted chip can support 2.4G and Bluetooth to work simultaneously, a virtual 7.1 sound effect is supported in a 2.4G mode, a low-delay, low-power-consumption and low-cost SOC scheme is supported, the delay is as low as 16ms, the power consumption is less than 30mA, accurate positioning sound can be provided, the immersive electronic competition experience is brought, the Bluetooth mode can be connected with the Bluetooth of a mobile phone at the same time, each important telephone can not be missed, and the user experience is more convenient.
The main control chip U2 adopts a chip capable of supporting 2.4G and Bluetooth modes to work simultaneously, the utility model adopts a chip with the model IA2523, the main control chip U2 is in Bluetooth communication with a mobile phone end and in wireless communication with a computer end through 2.4G, the main control chip is in communication with a loudspeaker and a microphone rod, and can transmit the sound of the mobile phone end and the computer end to the loudspeaker and also can transmit the sound collected by the microphone rod.
Fig. 2-11 are schematic diagrams of circuit connection of the main control module, namely, a headset end, wherein when the power switch SW1 is pressed for a long time, pins 2 and 3 of the MOS transistor Q2 are turned on, and pin 44 of the main control chip U2 is detected to be pulled down, so that the main control module enters a power-on state, and when the USB protocol module is detected to enter a pairing state after the main control module is started, the RX end is automatically successfully paired with the USB protocol module. The communication charging interface JK1 is a TYPE-C communication and charging interface, so that the earphone can be used as a wired earphone connected with a computer, meanwhile, a product can be charged, the battery is charged through the protection chip U4, the protection chip U4 has the characteristics of low power consumption, high overvoltage detection precision and the like, the battery can be better protected at the second stage, and the management chip U5 manages the charging. The microphone rod seat JK2 is used as an external microphone rod, a signal can be wirelessly transmitted back to a computer or a connecting end between BT and a mobile phone through the main control chip U2 after the external microphone rod is inserted, the toggle switch S2 is used as an external microphone rod MUTE, and the switch can be pulled to achieve the purpose of microphone opening and microphone closing. The adjusting switch SW2 is used as the volume control of the product, and the volume control can synchronously control the volume of the mobile phone or the computer. The RF of the main control chip U2 is connected with the transmitting antenna ANT1 or the transmitting antenna ANT2 through the radio frequency chip U3 according to which path of ANT antenna signal is better, and the antenna is utilized to complete wireless bidirectional transmission with the USB protocol module. The model of the radio frequency chip U3 adopts HWS507, the model of the communication charging interface JK1 adopts TYPE-C16B, the model of the protection chip U4 adopts ET9528, the model of the management chip U5 adopts ME4054B-N, the light emitting diode LED1 is a charging indicator lamp, the light emitting diode LED2 is a charging full indicator lamp, and the light emitting diode LED3 is a 2.4G state indicator lamp.
Fig. 12-16 are circuit connection diagrams of the USB protocol module. The USB interface J1 is a USB_A OTG data port, after the USB_A OTG data port is inserted into an A port of a computer, a 5V power supply is supplied to the protocol chip U3 through the management chip U6 in a voltage stabilizing way of 3.3V to achieve an automatic starting state, the pairing key SW1 is double-clicked, the protocol chip U3 is enabled to enter the pairing state, the virtual sound effect chip U4 serves as a virtual 7.1 sound effect processor, the virtual sound effect chip U3 is in real-time data communication with the protocol chip U3 through I2C data, RF of the protocol chip U3 is enabled to better select to switch on the transmitting antenna ANT3 or the transmitting antenna ANT4 according to which path of ANT antenna signals, wireless bidirectional transmission is completed with the master control module through the antenna, and the transmitting antenna ANT1 is communicated with the transmitting antenna ANT3 and the transmitting antenna ANT 4. The model of protocol chip U3 adopts IA2523, the model of radio frequency chip U2 adopts HWS507, the model of management chip U6 adopts ME6231C33M5G, the model of virtual sound effect chip U4 adopts CM001, the model of USB interface J1 adopts USB_TYPE-A1.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (10)
1. The utility model provides a wear-type microphone earphone control circuit which characterized in that, includes main control module and USB protocol module, USB protocol module inserts the USB interface of computer end, USB protocol module with main control module two-way communication is connected, the cell-phone end with main control module two-way communication is connected, main control module output signal is to the speaker, main control module receives the signal from the miaow pole, main control module compatible 2.4G transmission mode and bluetooth transmission mode.
2. The headset microphone headset control circuit of claim 1, wherein the master control module comprises a master control chip U2 and a radio frequency chip U3, a 47 pin of the master control chip U2 is connected with a 3 pin of the crystal oscillator U1, a 48 pin of the master control chip U2 is connected with a1 pin of the crystal oscillator U1, a 47 pin of the master control chip U2 is connected with one end of a capacitor C1, a 48 pin of the master control chip U2 is connected with one end of a capacitor C8, one end of a resistor R2 is connected with one end of the capacitor C1, the other end of the resistor R2 is connected with one end of the capacitor C8, and the other end of the capacitor C1, the other end of the capacitor C8, and the 2 and 3 pins of the crystal oscillator U1 are all grounded with signals; the 5 pin of the radio frequency chip U3 is connected with one end of a capacitor C17, the other end of the capacitor C17 is connected with one end of an inductor L4, the other end of the inductor L4 is connected with one end of a capacitor C16, the other end of the capacitor C16 is connected with the 2 pin of the main control chip U2, the 4 pin of the radio frequency chip U3 is connected with one end of a capacitor C22, the 6 pin of the radio frequency chip U3 is connected with one end of a capacitor C12, the other end of the capacitor C12 and the other end of the capacitor C22 are grounded, the 1 pin of the radio frequency chip U3 is connected with one end of a capacitor C9, the other end of the capacitor C9 is connected with one end of a capacitor C10, the other end of the capacitor C10 is connected with the 1 pin of a transmitting antenna ANT1, the 1 pin of antenna package A1 is connected with one end of electric capacity C32, the other end of electric capacity C32 is connected with one end of electric capacity C10, the 2 pin of antenna package A1 is grounded, the 3 pin of radio frequency chip U3 is connected with one end of electric capacity C20, the other end of electric capacity C20 is connected with one end of electric capacity C21, the other end of electric capacity C21 is connected with 1 pin of transmitting antenna ANT2, the 1 pin of antenna package A2 is connected with one end of electric capacity C37, the other end of electric capacity C37 is connected with one end of electric capacity C21, the 2 pin of antenna package A2 is grounded, the 3 pin of antenna package A2 is grounded, the 2 pin of radio frequency chip U2 is grounded.
3. The headset microphone headset control circuit of claim 2, wherein the master control module further comprises a microphone circuit and a speaker circuit, the microphone circuit and the speaker circuit are both connected with the master control chip U2, the microphone circuit comprises a microphone holder JK2 and a toggle switch S2, pin 15 of the master control chip U2 is connected with one end of a resistor R29, the other end of the resistor R29 is connected with one end of a capacitor C33, the other end of the capacitor C33 is grounded, one end of the resistor R31 is connected with the other end of the resistor R29, the other end of the resistor R31 is connected with one end of a capacitor C35, the other end of the capacitor C35 is connected with one end of a resistor R30, the other end of the resistor R30 is grounded, pin 16 of the master control chip U2 is connected with one end of a capacitor C34, the other end of the capacitor C34 is connected with pins 3 and 6 of the microphone holder JK2, pin 17 of the master control chip U2 is connected with one end of a capacitor C36, the other end of the capacitor C36 is connected with pins 1 and 2 of the microphone holder JK2, pin 31 is connected with one end of a capacitor C35, and the other end of the master control chip U2 is connected with one end of a capacitor C46; the loudspeaker circuit comprises a left sound channel and a right sound channel, a 26 pin of a main control chip U2 is connected with the positive electrode of the left sound channel, a 25 pin of the main control chip U2 is connected with the negative electrode of the left sound channel, a 27 pin of the main control chip U2 is connected with the positive electrode of the right sound channel, a 28 pin of the main control chip U2 is connected with the negative electrode of the right sound channel, one end of a capacitor C26 is connected with the positive electrode of the left sound channel, the other end of the capacitor C26 is connected with the negative electrode of the left sound channel, one end of a capacitor C27 is connected with the positive electrode of the right sound channel, and the other end of the capacitor C27 is connected with the negative electrode of the right sound channel.
4. The headset microphone headset control circuit of claim 2, wherein the master control module further comprises an indicator light circuit and a volume control circuit, wherein the indicator light circuit and the volume control circuit are both connected with the master control chip U2, the indicator light circuit comprises a light emitting diode LED1, a light emitting diode LED2 and a light emitting diode LED3, a 7 pin of the master control chip U2 is connected with one end of a resistor R9, the other end of the resistor R9 is connected with the positive electrode of the light emitting diode LED1, a 6 pin of the master control chip U2 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with the positive electrode of the light emitting diode LED2, a 5 pin of the master control chip U2 is connected with one end of a resistor R13, the other end of the resistor R13 is connected with the positive electrode of the light emitting diode LED3, and the negative electrode of the light emitting diode LED1, the negative electrode of the light emitting diode LED2 and the negative electrode of the light emitting diode LED3 are all connected with signal ground; the volume control circuit comprises an adjusting switch SW2, wherein a1 pin of the adjusting switch SW2 is connected with a 32 pin of the main control chip U2, and a 3 pin of the adjusting switch SW2 is connected with a 33 pin of the main control chip U2.
5. The headset microphone headset control circuit of claim 2, wherein the master control module further comprises a power supply circuit, the power supply circuit comprises a communication charging interface JK1, a protection chip U4, a management chip U5 and a power switch SW1, pins A4, B4, A9 and B9 of the communication charging interface JK1 are connected with external 5V voltage, one end of a resistor R6 is connected with pin A6 of the communication charging interface JK1, the other end of the resistor R6 is connected with pin 12 of the master control chip U2, one end of a resistor R7 is connected with pin A7 of the communication charging interface JK1, and the other end of the resistor R7 is connected with pin 11 of the master control chip U2; the 3 pin of the protection chip U4 is connected with external 5V voltage, the 4 pin of the protection chip U4 is connected with the 4 pin of the management chip U5, the 3 pin of the management chip U5 is connected with the positive electrode of the battery, the negative electrode of the battery is connected with one end of the capacitor C42, the other end of the capacitor C42 outputs VCC4BAT voltage, and the 1 pin of the management chip U5 is connected with the 13 pin of the main control chip U2; the 2 pin of the electric energy switch SW1 is connected with VCC4BAT voltage, the 1 pin of the electric energy switch SW1 is connected with one end of a resistor R33, the other end of the resistor R33 is connected with the base electrode of a MOS tube Q2, the emitter electrode of the MOS tube Q2 is grounded, the collector electrode of the MOS tube Q2 is connected with one end of a resistor R49, the other end of the resistor R39 outputs VCC3SYS voltage, and the collector electrode of the MOS tube Q2 is connected with the 44 pin of a main control chip U2.
6. The headset microphone headset control circuit of claim 2, wherein the USB protocol module includes a protocol chip U3 and a radio frequency chip U2, pin 38 of the protocol chip U3 is connected to pin 3 of the crystal oscillator U2, pin 39 of the protocol chip U3 is connected to pin 1 of the crystal oscillator U2, pin 38 of the protocol chip U3 is connected to one end of a capacitor C101, pin 39 of the protocol chip U3 is connected to one end of a capacitor C106, one end of a resistor R109 is connected to one end of the capacitor C101, the other end of the resistor R109 is connected to one end of the capacitor C106, and the other end of the capacitor C101, the other end of the capacitor C106, and pins 2 and 3 of the crystal oscillator U2 are all grounded; the 5 pin of the radio frequency chip U2 is connected with one end of a capacitor C115, the other end of the capacitor C115 is connected with one end of an inductor L104, the other end of the inductor L104 is connected with one end of a capacitor C114, the other end of the capacitor C14 is connected with the 1 pin of a protocol chip U3, the 4 pin of the radio frequency chip U2 is connected with one end of a capacitor C120, the 6 pin of the radio frequency chip U2 is connected with one end of a capacitor C112, the other end of the capacitor C112 is grounded with the other end of the capacitor C120, the 1 pin of the radio frequency chip U2 is connected with one end of a capacitor C109, the other end of the capacitor C109 is connected with one end of a capacitor C110, the other end of the capacitor C110 is connected with the 1 pin of a transmitting antenna ANT3, the 1 pin of an antenna mounting part A3 is connected with one end of a capacitor C107, the other end of electric capacity C107 is connected with the one end of electric capacity C110, the 2 pin of antenna mounting spare A3 is grounded, the 3 pin of radio frequency chip U2 is connected with the one end of electric capacity C121, the other end of electric capacity C121 is connected with the one end of electric capacity C122, the other end of electric capacity C122 is connected with the 1 pin of transmitting antenna ANT4, the 1 pin of antenna mounting spare A4 is connected with the one end of electric capacity C123, the other end of electric capacity C123 is connected with the one end of electric capacity C122, the 2 pin of antenna mounting spare A4 is grounded, the 3 pin of antenna mounting spare A4 is grounded, the 2 pin of radio frequency chip U2 is grounded, transmitting antenna ANT1 and transmitting antenna ANT3 communicate, transmitting antenna ANT2 and transmitting antenna ANT4 communicate.
7. The headset microphone headset control circuit of claim 6, wherein the USB protocol module further comprises a power circuit, the power circuit comprises a management chip U6, pins 1 and 3 of the management chip U6 are connected to an external voltage VBUS, pin 5 of the management chip U6 is connected to one end of a capacitor C130, the other end of the capacitor C130 is connected to a signal ground, and one end of the capacitor C130 outputs a VCC4BAT voltage.
8. The headset microphone headset control circuit of claim 7, wherein the USB protocol module further comprises a virtual sound effect circuit, the virtual sound effect circuit comprises a virtual sound effect chip U4, pin 6 of the virtual sound effect chip U4 is connected to VCC4BAT voltage, pin 7 of the virtual sound effect chip U4 is connected to one end of a resistor R101, the other end of the resistor R101 is connected to VCC4BAT voltage, one end of a resistor R103 is connected to one end of the resistor R101, the other end of the resistor R103 is grounded, pin 8 of the virtual sound effect chip U4 is connected to pin 3 of the protocol chip U3, and pin 9 of the virtual sound effect chip U4 is connected to pin 2 of the protocol chip U3.
9. The headset microphone headset control circuit of claim 8, wherein the USB protocol module further comprises a USB interface J1, pin 1 of the USB interface J1 is connected to an external voltage VBUS, pin 2 of the USB interface J1 is connected to one end of a resistor R105, the other end of the resistor R105 is connected to pin 10 of the protocol chip U3, pin 3 of the USB interface J1 is connected to one end of a resistor R106, the other end of the resistor R106 is connected to pin 11 of the protocol chip U3, pins 4 and 6 of the USB interface J1 are grounded, and pin 5 of the USB interface J1 is signal grounded.
10. The headset microphone headset control circuit of claim 6 wherein the USB protocol module further comprises a matching switch circuit and an indication circuit, both of which are connected to the protocol chip U3, the matching switch circuit comprising a pairing key SW1, one end of the pairing key SW1 being connected to pin 34 of the protocol chip U3, the other end of the pairing key SW1 being connected to signal ground; the indicating circuit comprises a light emitting diode D1, the negative electrode of the light emitting diode D1 is grounded, the positive electrode of the light emitting diode D1 is connected with one end of a resistor R102, and the other end of the resistor R102 is connected with a 24 pin of a protocol chip U3.
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| CN202322619692.5U CN220965115U (en) | 2023-09-26 | 2023-09-26 | Headset earphone control circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322619692.5U CN220965115U (en) | 2023-09-26 | 2023-09-26 | Headset earphone control circuit |
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| CN202322619692.5U Active CN220965115U (en) | 2023-09-26 | 2023-09-26 | Headset earphone control circuit |
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