An audio device and an audio circuit

Abstract

This utility model discloses an audio circuit, including a main control chip and a vibration switch detection circuit. The vibration switch detection circuit includes a vibration switch, and the main control chip activates the audio system based on a predetermined vibration signal from the vibration switch transmitted to it by the vibration switch detection circuit. This utility model also discloses an audio system incorporating this audio circuit. By incorporating a vibration switch detection circuit into the audio circuit, the audio system can be turned on by shaking it, making it more convenient to use and increasing its entertainment value.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment, and in particular to an audio device and an audio circuit. Background Technology

[0002] With social and economic development and technological advancements, Bluetooth speakers have become widely used. These speakers can be paired with devices such as computers and televisions to provide people with an auditory experience. Current speakers generally come equipped with several function buttons, including a power button and volume control buttons. However, the operation of current speakers is rather basic, lacking variety and entertainment features. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an audio circuit.

[0004] To solve the above technical problems, the present invention provides an audio circuit, including a main control chip and a vibration switch detection circuit. The vibration switch detection circuit includes a vibration switch, and the main control chip starts the audio system based on the vibration signal of the vibration switch transmitted to it by the vibration switch detection circuit.

[0005] The vibration switch detection circuit includes an MCU chip, a vibration switch, and a first voltage divider circuit. The first terminal of the vibration switch is grounded, and the second terminal of the vibration switch is connected to the first terminal of the first voltage divider circuit. The second terminal of the first voltage divider circuit is connected to a high level and one of the ports of the MCU chip.

[0006] The first voltage divider circuit is a first resistor. The first end of the first resistor is connected to the second end of the vibration switch. The second end of the first resistor is connected to a high level. The second end of the first resistor is connected to one of the ports of the MCU chip.

[0007] The second end of the first resistor is connected to a high level through a filter circuit, which is an RC filter circuit.

[0008] The vibration switch detection circuit further includes a second voltage divider circuit, through which the main control chip sends an enable signal to the MCU chip under predetermined conditions.

[0009] The second voltage divider circuit includes a second resistor and a third resistor connected in series. The first end of the second resistor is connected to a port of the MCU chip, the second end of the second resistor is connected to the first end of the third resistor, the second end of the third resistor is grounded, and the second end of the second resistor is connected to a port of the main control chip.

[0010] The audio circuit also includes a button, one end of which is grounded and the other end of which is connected to the negative terminal of a diode. The positive terminal of the diode is connected to a port of the main control chip. After the main control chip detects the predetermined operation signal of the button, it sends an enable signal to the MCU chip.

[0011] The audio circuit also includes a reset circuit. The main control chip sends a reset signal to the MCU chip through the reset circuit. The reset circuit includes a fourth resistor and a fifth resistor. One port of the MCU chip is connected to the first end of the fourth resistor, the second end of the fourth resistor is connected to the first end of the fifth resistor, the second end of the fifth resistor is grounded, and the second end of the fourth resistor is connected to one port of the main control chip.

[0012] The vibration switch is a spring vibration switch.

[0013] This utility model also discloses an audio device, which includes the aforementioned audio circuit.

[0014] By incorporating a vibration switch detection circuit into the audio circuitry, the audio system can be turned on by shaking it, making it more convenient to use and enhancing its entertainment value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main control chip of the audio circuit of this utility model;

[0016] Figure 2 This is a schematic diagram of the vibration switch detection circuit of the audio circuit of this utility model;

[0017] Figure 3 This is a schematic diagram of the button circuit of the audio circuit of this utility model. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1-3 As shown, the audio circuit in this embodiment includes a main control chip U8 and a vibration switch detection circuit. The vibration switch detection circuit includes a vibration switch D10. The main control chip U8 activates the audio system based on a predetermined vibration signal from the vibration switch D10 transmitted to it by the vibration switch detection circuit. That is, if the main control chip U8 receives the predetermined vibration signal from the vibration switch D10, it activates the audio system; otherwise, if the main control chip U8 does not receive the predetermined vibration signal from the vibration switch D10, it will not activate the audio system.

[0020] The vibration switch detection circuit includes an MCU chip U7, a vibration switch D10, and a first voltage divider circuit. The first terminal of the vibration switch D10 is grounded, and the second terminal of the vibration switch D10 is connected to the first terminal of the first voltage divider circuit. The second terminal of the first voltage divider circuit is connected to a high-level voltage B+ and port P62 of the MCU chip U7. The first voltage divider circuit is a first resistor R13. The first terminal of the first resistor R13 is connected to the second terminal of the vibration switch D10, and the second terminal of the first resistor R13 is connected to the high-level voltage B+ through a filter circuit. The second terminal of the first resistor R13 is also connected to port P62 of the MCU chip U7. The filter circuit is an RC filter circuit composed of a resistor R17 and a capacitor C10. When the speaker is subjected to a shaking vibration operation of a predetermined frequency and intensity, the vibration switch D10 is turned on, and port P62 of the MCU chip U7 can detect a low level.

[0021] As an optimization measure, the vibration switch detection circuit further includes a second voltage divider circuit. Under predetermined conditions, the main control chip U8 sends an enable signal to the MCU chip U7 through the second voltage divider circuit. The second voltage divider circuit includes a second resistor R21 and a third resistor R23 connected in series. The first end of the second resistor R21 is connected to port P61 of the MCU chip U7, and the second end of the second resistor R21 is connected to the first end of the third resistor R23. The second end of the third resistor R23 is grounded, and the second end of the second resistor R21 is connected to port P61 of the main control chip U8. Under predetermined conditions, the main control chip U8 outputs a high level through the second voltage divider circuit. After receiving the high-level signal at port P61 of the MCU chip U7, the MCU chip U7 outputs a signal to the main control chip U8 through its port P60. The main control chip U8 then determines whether to activate the audio system based on this signal.

[0022] In this embodiment, the audio circuit further includes a button SW1. One end of the button SW1 is grounded, and the other end is connected to the negative terminal of a diode D4. The positive terminal of the diode D4 is connected to port 14 of the main control chip U8. After detecting a predetermined operation signal from the button SW1, the main control chip U8 sends an enable signal to the MCU chip U7. Specifically, for example, the predetermined operation can be set as follows: when the user presses the button SW1 for more than 3 seconds, the main control chip U8 sends an enable signal to the MCU chip U7. Of course, the audio circuit also includes other buttons, such as buttons SW2 and SW3, the types and functions of which are common knowledge in the art and will not be described in detail here.

[0023] In this embodiment, the audio circuit further includes a reset circuit. The main control chip U8 sends a reset signal to the MCU chip U7 through the reset circuit. The reset circuit includes a fourth resistor R18 and a fifth resistor R20. Port P63 of the MCU chip is connected to the first end of the fourth resistor R18, the second end of the fourth resistor R18 is connected to the first end of the fifth resistor R20, the second end of the fifth resistor R20 is grounded, and the second end of the fourth resistor R18 is connected to port 20 of the main control chip U8. In this embodiment, the main control chip U8 sends a low-level reset signal to the MCU chip U7 through the reset circuit, thereby resetting the MCU chip U7. In this embodiment, the vibration switch D10 is a spring vibration switch; however, other types of vibration switches can also be selected.

[0024] Of course, the audio circuit of this utility model also includes a power amplifier circuit, a boost circuit, a power supply circuit, etc., which are common knowledge in the field and will not be described in detail here. The uses and functions of the other ports of the main control chip U8 are also common knowledge in the field and will not be described in detail here.

[0025] The audio circuit of this invention works as follows: When a predetermined operation is performed on button SW1, for example, pressing button SW1 for more than 3 seconds, port 14 of the main control chip U8 detects a potential change at the positive terminal of diode D4, thereby detecting the predetermined operation signal on button SW1. The main control chip U8 then sends an enable signal to port P61 of the MCU chip U7 through its port 21. In this case, when the audio is subjected to a shaking vibration operation of a predetermined frequency and intensity, the vibration switch D10 is turned on, and port P62 of the MCU chip U7 can detect a low level. The MCU chip U7 outputs a signal to the main control chip U8 through its port P60, and the main control chip U8 determines to start the audio based on this signal. Finally, the main control chip U8 sends a low-level reset signal to the MCU chip U7 through a reset circuit, resetting the MCU chip U7.

[0026] This utility model also discloses an audio device, which includes the aforementioned audio circuit.

[0027] By incorporating a vibration switch detection circuit into the audio circuitry, the audio system can be turned on by shaking it, making it more convenient to use and enhancing its entertainment value.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the present utility model are covered by the scope of the claims of the present utility model, and will not be listed here.

Claims

1. An acoustic circuit, characterized by The audio circuit includes a main control chip and a vibration switch detection circuit. The vibration switch detection circuit includes a vibration switch. The main control chip starts the audio system based on a predetermined vibration signal from the vibration switch transmitted to it by the vibration switch detection circuit.

2. The sound circuit according to claim 1, wherein The vibration switch detection circuit includes an MCU chip, a vibration switch, and a first voltage divider circuit. The first terminal of the vibration switch is grounded, and the second terminal of the vibration switch is connected to the first terminal of the first voltage divider circuit. The second terminal of the first voltage divider circuit is connected to a high level and one of the ports of the MCU chip.

3. The sound circuit according to claim 2, wherein The first voltage divider circuit is a first resistor. The first end of the first resistor is connected to the second end of the vibration switch. The second end of the first resistor is connected to a high level. The second end of the first resistor is connected to one of the ports of the MCU chip.

4. The sound circuit according to claim 3, wherein The second end of the first resistor is connected to a high level through a filter circuit, which is an RC filter circuit.

5. The sound circuit according to claim 2, wherein, The vibration switch detection circuit also includes a second voltage divider circuit, under predetermined conditions, the main control chip sends an enable signal to the MCU chip through the second voltage divider circuit.

6. The sound circuit according to claim 5, wherein The second voltage divider circuit includes a second resistor and a third resistor connected in series. The first end of the second resistor is connected to a port of the MCU chip, the second end of the second resistor is connected to the first end of the third resistor, the second end of the third resistor is grounded, and the second end of the second resistor is connected to a port of the main control chip.

7. The sound circuit according to claim 5, wherein The audio circuit also includes a button, one end of which is grounded and the other end of which is connected to the negative terminal of a diode. The positive terminal of the diode is connected to a port of the main control chip. After the main control chip detects the predetermined operation signal of the button, it sends an enable signal to the MCU chip.

8. The sound circuit according to claim 6, wherein The audio circuit also includes a reset circuit. The main control chip sends a reset signal to the MCU chip through the reset circuit. The reset circuit includes a fourth resistor and a fifth resistor. One port of the MCU chip is connected to the first end of the fourth resistor, the second end of the fourth resistor is connected to the first end of the fifth resistor, the second end of the fifth resistor is grounded, and the second end of the fourth resistor is connected to one port of the main control chip.

9. The sound circuit of claim 1, wherein, The vibration switch is a spring vibration switch.

10. A sound device, characterized by comprising: The audio system includes the audio circuit described in any one of claims 1 to 9.

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