Bluetooth sound equipment circuit with USB flash disk playing function

Abstract

The utility model relates to the technical field of sound equipment, in particular to a Bluetooth sound equipment circuit with a USB flash disk playing function, which comprises a Bluetooth control circuit, an MCU (Microprogrammed Control Unit) control circuit, a Type-C control circuit and an indicator light circuit, the Bluetooth control circuit, the Type-C control circuit and the indicator light circuit are respectively connected with the MCU control circuit, the Type-C control circuit comprises a Type-C port, an inductor L5 and an inductor L6, the inductor L5 is connected with the Type-C port, and the inductor L6 is connected with the Type-C port. The Bluetooth control circuit comprises a Bluetooth chip IC12, the Bluetooth chip IC12 is provided with a DM pin, a DP pin, a PG0 pin, a PG1 pin and a PG2 pin, the DM pin is connected with a B7 pin of the Type-C port through an inductor L6, the DP pin is connected with a B6 pin of the Type-C port through an inductor L5, and the indicator lamp circuit comprises an indicator lamp LED5. According to the utility model, the purpose of detecting the USB flash disk by the Bluetooth chip is realized, and the use flexibility and the functional diversity of the USB flash disk are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sound technology field especially is a kind of bluetooth sound circuit with U disk play function. BACKGROUND

[0002] Current existing bluetooth sound has several: there is bluetooth sound with radio, and its inside has receiving radio broadcast broadcast receiving chip;There is simply bluetooth sound, and inside only has bluetooth chip, and function is relatively single. SUMMARY

[0003] The utility model provides a kind of bluetooth sound circuit with U disk play function to the prior art problem, utilize bluetooth chip and Type-C port to communicate, realize the purpose of bluetooth chip detection U disk, improve the use flexibility and functional diversity of the utility model, novel structure, ingenious design.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a kind of bluetooth sound circuit with U disk play function, it includes bluetooth control circuit, MCU control circuit, Type-C control circuit and indicator light circuit, the bluetooth control circuit is connected with the MCU control circuit, the Type-C control circuit includes Type-C port, inductance L5 and inductance L6, the bluetooth control circuit includes bluetooth chip IC12, the bluetooth chip IC12 is provided with DM pin, DP pin, PG0 pin, PG1 pin and PG2 pin, the DM pin is connected with the B7 pin of Type-C port by inductance L6, the DP pin is connected with the B6 pin of Type-C port by inductance L5, the indicator light circuit includes indicator light LED5, the indicator light LED5 is RGB lamp, the PG0 pin, PG1 pin and PG2 pin are connected with indicator light LED5 respectively.

[0006] Among them, the bluetooth sound circuit with U disk play function further includes keying circuit, the keying circuit includes key POWER and electrostatic diode ESD22, the key POWER is connected with the electrostatic diode ESD22 in parallel, one end of the key POWER is grounded, the other end of the key POWER is connected with MCU control circuit.

[0007] The key circuit further comprises a key KEY1, a key KEY2, a key KEY3, a key KEY4, a key KEY5, a key KEY6, a key KEY7, a resistor R4, a resistor R32, a resistor R33, a capacitor C67, a capacitor C68, a capacitor C69, a static diode ESD17, a static diode ESD18, a static diode ESD19, a static diode ESD20 and a static diode ESD21, the Bluetooth chip IC12 is further provided with a PC6 pin, a PC5 pin, a PC4 pin, a PC3 pin and a PC2 pin, one end of the key KEY1 is grounded, the other end of the key KEY1 is connected with one end of the key KEY2, one end of the key KEY5 and one end of the resistor R4 respectively, the other end of the key KEY2 is connected with one end of the static diode ESD20 and the PC5 pin respectively, the other end of the key KEY5 is connected with one end of the static diode ESD21 and the PC4 pin respectively, the other end of the static diode ESD20 and the other end of the static diode ESD21 are grounded; the other end of the resistor R4 is connected with one end of the static diode ESD18, one end of the capacitor C69 and the PC2 pin respectively, the other end of the static diode ESD18 and the other end of the capacitor C69 are grounded; one end of the key KEY3 and one end of the key KEY4 are connected with the PC5 pin respectively, the other end of the key KEY3 is connected with one end of the key KEY6 and one end of the resistor R33, the other end of the resistor R33 is connected with one end of the capacitor C68, one end of the static diode ESD19 and the PC3 pin; the other end of the key KEY4 is connected with one end of the key KEY7 and one end of the resistor R32 respectively, the other end of the key KEY7 and the other end of the key KEY6 are connected with the PC4 pin respectively, the other end of the resistor R32 is connected with one end of the capacitor C67 and the PC6 pin, the static diode ESD17 is connected with the capacitor C67 in parallel, the other end of the capacitor C67 is grounded.

[0008] The indicator lamp circuit further comprises a resistor R67, a resistor R68 and a resistor R69, the PG0 pin, the PG1 pin and the PG2 pin are connected with the indicator lamp LED5 through the resistor R67, the resistor R68 and the resistor R69 respectively.

[0009] The indicator lamp circuit further comprises resistors R1, R2, R3, R66, R77, indicator lamps LED1, LED2, LED3, LED4 and LED6, the Bluetooth chip IC12 is further provided with a PG3 pin, a PC8 pin, a PA9 pin, a PA10 pin and a PA11 pin, the PG3 pin is connected with the indicator lamp LED6 through the resistor R70, the PC8 pin is connected with the indicator lamp LED4 through the resistor R66, the PA10 pin is connected with the indicator lamp LED3 through the resistor R3, the PA11 pin is connected with the indicator lamp LED2 through the resistor R1, and the PA9 pin is connected with the indicator lamp LED1 through the resistor R2.

[0010] The Bluetooth audio circuit with a U disk playing function further comprises a power supply circuit, and the power supply circuit is used for supplying power for the Bluetooth control circuit, the MCU control circuit, the Type-C control circuit and the indicator lamp circuit.

[0011] The utility model discloses beneficial effect:

[0012] The utility model discloses beneficial effect: BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the circuit diagram of the Bluetooth control circuit and MCU control circuit of the utility model.

[0014] Fig. 2 It is the circuit diagram of the Type-C control circuit of the utility model.

[0015] Fig. 3 It is the circuit diagram of the indicator lamp circuit of the utility model.

[0016] Fig. 4This is a circuit diagram of the button circuit of this utility model. Detailed Implementation

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0018] A Bluetooth speaker circuit with USB flash drive playback function, such as Figs. 1 to 4 As shown, it includes a Bluetooth control circuit, an MCU control circuit, a Type-C control circuit, and an indicator light circuit. The Bluetooth control circuit is connected to the MCU control circuit. The Type-C control circuit includes a Type-C port, inductor L5, and inductor L6. The MCU control circuit includes an MCU chip IC2, and the Bluetooth control circuit includes a Bluetooth chip IC12. The MCU chip IC2 is connected to the Bluetooth chip IC12. The Bluetooth chip IC12 has a DM pin, a DP pin, a PG0 pin, a PG1 pin, and a PG2 pin. The DM pin is connected to the B7 pin of the Type-C port through inductor L6, and the DP pin is connected to the B6 pin of the Type-C port through inductor L5. The indicator light circuit includes an indicator light LED5, which is an RGB light. The PG0 pin, PG1 pin, and PG2 pin are respectively connected to the indicator light LED5. Specifically, in the operation of this embodiment, when the power supply is plugged in and the power button is pressed, the indicator light LED5 will flash blue. The DM and DP pins of the Bluetooth chip IC12 will be detected by the Type-C port through inductors L6 and L5, respectively. If no data from the USB flash drive is detected, it will remain in Bluetooth mode; if data from the USB flash drive is detected, it will switch to USB flash drive mode for music playback, and the blue light on the indicator light LED5 will turn off. When the USB flash drive is unplugged, the DM and DP pins of the Bluetooth chip IC12 will be detected by the Type-C port through inductors L6 and L5, respectively, and the Bluetooth chip IC12 will consider that the USB flash drive has been unplugged and automatically switch to Bluetooth mode. This embodiment utilizes the Bluetooth chip and the Type-C port for communication, realizing the purpose of the Bluetooth chip detecting the USB flash drive, improving the flexibility and versatility of this utility model. It has a novel structure and ingenious design; it can automatically detect the insertion and removal of the USB flash drive and automatically switch the playback mode without manual operation by the user, improving the convenience and flexibility of use.

[0019] In the embodiment of the application, the Bluetooth sound circuit with U disk playing function further comprises a key circuit, the key circuit comprises a key POWER and an electrostatic diode ESD22, the key POWER is connected with the electrostatic diode ESD22 in parallel, one end of the key POWER is grounded, and the other end of the key POWER is connected with the MCU control circuit. Specifically, the key POWER is used for starting the Bluetooth sound, after starting, the indicator light LED5 will display blue light flickering, and the DM pin and the DP pin of the Bluetooth chip IC12 will be detected through the inductor L6 and the inductor L5 respectively and the Type-C port; wherein the electrostatic diode ESD22 plays a protection role.

[0020] In the embodiment of the application, the key circuit further includes a key KEY1, a key KEY2, a key KEY3, a key KEY4, a key KEY5, a key KEY6, a key KEY7, a resistor R4, a resistor R32, a resistor R33, a capacitor C67, a capacitor C68, a capacitor C69, an electrostatic diode ESD17, an electrostatic diode ESD18, an electrostatic diode ESD19, an electrostatic diode ESD20 and an electrostatic diode ESD21. The Bluetooth chip IC12 is further provided with a PC6 pin, a PC5 pin, a PC4 pin, a PC3 pin and a PC2 pin. One end of the key KEY1 is grounded, and the other end of the key KEY1 is connected with one end of the key KEY2, one end of the key KEY5 and one end of the resistor R4 respectively. The other end of the key KEY2 is connected with one end of the electrostatic diode ESD20 and the PC5 pin respectively. The other end of the key KEY5 is connected with one end of the electrostatic diode ESD21 and the PC4 pin respectively. The other end of the electrostatic diode ESD20 and the other end of the electrostatic diode ESD21 are grounded. The other end of the resistor R4 is connected with one end of the electrostatic diode ESD18, one end of the capacitor C69 and the PC2 pin respectively. The other end of the electrostatic diode ESD18 and the other end of the capacitor C69 are grounded. One end of the key KEY3 and one end of the key KEY4 are connected with the PC5 pin respectively. The other end of the key KEY3 is connected with one end of the key KEY6 and one end of the resistor R33. The other end of the resistor R33 is connected with one end of the capacitor C68, one end of the electrostatic diode ESD19 and the PC3 pin. The other end of the key KEY4 is connected with one end of the key KEY7 and one end of the resistor R32 respectively. The other end of the key KEY7 and the other end of the key KEY6 are connected with the PC4 pin respectively. The other end of the resistor R32 is connected with one end of the capacitor C67 and the PC6 pin. The electrostatic diode ESD17 is connected with the capacitor C67 in parallel. The other end of the capacitor C67 is grounded. Specifically, the key KEY1, the key KEY2, the key KEY3, the key KEY4, the key KEY5, the key KEY6 and the key KEY7 are function keys of the Bluetooth sound box, specifically: the key KEY1 is a PREV key, the key KEY2 is a NEXT key, the key KEY3 is a BT key, the key KEY4 is an Auracast key, the key KEY5 is a PLAY / PAUSE key, the key KEY6 is a VOL+ key, and the key KEY7 is a VOL- key.

[0021] In the embodiment of the application, the indicator light circuit further includes a resistor R67, a resistor R68 and a resistor R69. The PG0 pin, the PG1 pin and the PG2 pin are connected with the indicator light LED5 through the resistor R67, the resistor R68 and the resistor R69 respectively.

[0022] In the embodiment of the application, the indicator light circuit further comprises resistors R1, R2, R3, R66, R77, indicator lights LED1, LED2, LED3, LED4 and LED6, the Bluetooth chip IC12 is further provided with a PG3 pin, a PC8 pin, a PA9 pin, a PA10 pin and a PA11 pin, the PG3 pin is connected with the indicator light LED6 through the resistor R70, the PC8 pin is connected with the indicator light LED4 through the resistor R66, the PA10 pin is connected with the indicator light LED3 through the resistor R3, the PA11 pin is connected with the indicator light LED2 through the resistor R1, and the PA9 pin is connected with the indicator light LED1 through the resistor R2.

[0023] In the embodiment of the application, the Bluetooth sound with a U disk playing function further comprises a power supply circuit, which is used for supplying power for the Bluetooth control circuit, the MCU control circuit, the Type-C control circuit and the indicator light circuit.

[0024] The above is only the preferred embodiment of the application, and does not limit the application in any form. Although the application is disclosed in the preferred embodiment, it is not intended to limit the application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the application. Any simple modification, equivalent change and modification of the above embodiment within the scope of the application are all within the scope of the application.

Claims

1. A Bluetooth speaker circuit with USB flash drive playback function, characterized in that: The Bluetooth control circuit, the MCU control circuit, the Type-C control circuit and the indicator light circuit are included, the Bluetooth control circuit is connected with the MCU control circuit, the Type-C control circuit includes a Type-C port, an inductor L5 and an inductor L6, the Bluetooth control circuit includes a Bluetooth chip IC12, the Bluetooth chip IC12 is provided with a DM pin, a DP pin, a PG0 pin, a PG1 pin and a PG2 pin, the DM pin is connected with a B7 pin of the Type-C port through the inductor L6, the DP pin is connected with a B6 pin of the Type-C port through the inductor L5, the indicator light circuit includes an indicator light LED5, the indicator light LED5 is an RGB lamp, the PG0 pin, the PG1 pin and the PG2 pin are connected with the indicator light LED5 respectively.

2. The Bluetooth sound circuit with U disk playing function according to claim 1, characterized in that: The Bluetooth audio circuit with U disk playing function further includes a key circuit, the key circuit includes a key POWER and an electrostatic diode ESD22, the key POWER is connected with the electrostatic diode ESD22 in parallel, one end of the key POWER is grounded, the other end of the key POWER is connected with the MCU control circuit.

3. The Bluetooth sound circuit with U disk playing function according to claim 2, characterized in that: The key circuit further comprises a key KEY1, a key KEY2, a key KEY3, a key KEY4, a key KEY5, a key KEY6, a key KEY7, a resistor R4, a resistor R32, a resistor R33, a capacitor C67, a capacitor C68, a capacitor C69, an electrostatic diode ESD17, an electrostatic diode ESD18, an electrostatic diode ESD19, an electrostatic diode ESD20 and an electrostatic diode ESD21, and the Bluetooth chip IC12 is further provided with a PC6 pin, a PC5 pin, a PC4 pin, a PC3 pin and a PC2 pin, one end of the key KEY1 is grounded, the other end of the key KEY1 is connected with one end of the key KEY2, one end of the key KEY5 and one end of the resistor R4 respectively, the other end of the key KEY2 is connected with one end of the electrostatic diode ESD20 and the PC5 pin respectively, the other end of the key KEY5 is connected with one end of the electrostatic diode ESD21 and the PC4 pin respectively, the other end of the electrostatic diode ESD20 and the other end of the electrostatic diode ESD21 are grounded; the other end of the resistor R4 is connected with one end of the electrostatic diode ESD18, one end of the capacitor C69 and the PC2 pin respectively, the other end of the electrostatic diode ESD18 and the other end of the capacitor C69 are grounded; one end of the key KEY3 and one end of the key KEY4 are connected with the PC5 pin respectively, the other end of the key KEY3 is connected with one end of the key KEY6 and one end of the resistor R33, the other end of the resistor R33 is connected with one end of the capacitor C68, one end of the electrostatic diode ESD19 and the PC3 pin, the other end of the key KEY4 is connected with one end of the key KEY7 and one end of the resistor R32 respectively, the other end of the key KEY7 and the other end of the key KEY6 are connected with the PC4 pin respectively, the other end of the resistor R32 is connected with one end of the capacitor C67 and the PC6 pin, the electrostatic diode ESD17 is connected with the capacitor C67 in parallel, and the other end of the capacitor C67 is grounded.

4. The Bluetooth sound circuit with U disk playing function according to claim 1, characterized in that: The indicator lamp circuit further comprises a resistor R67, a resistor R68 and a resistor R69, and the PG0 pin, the PG1 pin and the PG2 pin are connected with the indicator lamp LED5 through the resistor R67, the resistor R68 and the resistor R69 respectively.

5. The Bluetooth sound circuit with U-disk playing function according to claim 1, characterized in that: The indicator lamp circuit further comprises a resistor R1, a resistor R2, a resistor R3, a resistor R66, a resistor R77, an indicator lamp LED1, an indicator lamp LED2, an indicator lamp LED3, an indicator lamp LED4 and an indicator lamp LED6, and the Bluetooth chip IC12 is further provided with a PG3 pin, a PC8 pin, a PA9 pin, a PA10 pin and a PA11 pin, the PG3 pin is connected with the indicator lamp LED6 through a resistor R70, the PC8 pin is connected with the indicator lamp LED4 through a resistor R66, the PA10 pin is connected with the indicator lamp LED3 through a resistor R3, the PA11 pin is connected with the indicator lamp LED2 through a resistor R1, and the PA9 pin is connected with the indicator lamp LED1 through a resistor R2.

6. The Bluetooth sound circuit with U-disk playing function according to claim 1, characterized in that: The Bluetooth sound circuit with the U disk playing function further comprises a power supply circuit, which is used for supplying power for the Bluetooth control circuit, the MCU control circuit, the Type-C control circuit and the indicator light circuit.

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