Portable intelligent sound box

Abstract

The utility model discloses a portable intelligent sound box, which comprises a control module, a conversion module and a resistance feedback module, the conversion module and the resistance feedback module are electrically connected with the control module respectively; the resistance feedback module is also electrically connected with the conversion module; the conversion module is used for converting power supply voltage into working voltage for a circuit to use; and the control module is used for adjusting the feedback resistance in the resistance feedback module according to the output volume so as to adjust the output voltage of the conversion module. The control module adjusts the feedback resistance in the resistance feedback module according to the output volume so as to adjust the output voltage of the conversion module, so that the working efficiency of the circuit can be improved, and the influence on the battery life of a product due to long-time high-voltage work is avoided.

Description

Technical Field

[0001] This utility model relates to the field of intelligent speaker voltage regulation technology, and in particular to a portable intelligent speaker. Background Technology

[0002] Audio products require a specific voltage to output their rated power. However, music playback is a dynamic process. For example, when a user plays music at a low volume, the audio product is not operating at its maximum output power. If the DC-DC converter continues to operate at a high voltage at this time, it will affect the overall efficiency, especially when powered by an internal battery, which will directly affect the battery life. Utility Model Content

[0003] Existing audio products cannot adaptively adjust the power supply voltage according to the real-time power consumption of the product, which reduces efficiency and shortens the product's battery life.

[0004] To address the aforementioned issues, a portable smart speaker is proposed. The control module adjusts the value of the feedback resistor in the resistance feedback module based on the output volume, thereby regulating the output voltage of the conversion module. This improves circuit efficiency and avoids prolonged high-voltage operation, which could negatively impact battery life.

[0005] A portable smart speaker, comprising:

[0006] Control module;

[0007] Conversion module;

[0008] Resistance feedback module;

[0009] The conversion module and the resistance feedback module are respectively electrically connected to the control module;

[0010] The resistance feedback module is also electrically connected to the conversion module;

[0011] The conversion module is used to convert the power supply voltage into the operating voltage for use by the circuit.

[0012] The control module is used to adjust the size of the feedback resistor in the resistance feedback module according to the output volume, thereby adjusting the output voltage of the conversion module.

[0013] In a first possible embodiment of the portable smart speaker described in this utility model, the control module includes:

[0014] Multiple control pins;

[0015] The resistance feedback module includes:

[0016] Multiple resistance feedback units;

[0017] The plurality of resistance feedback units are connected in parallel;

[0018] The plurality of control pins are electrically connected to the plurality of resistive feedback units respectively, and are used to control the opening or closing of the resistive feedback units according to the instructions of the control module.

[0019] In conjunction with the first possible embodiment of this utility model, in the second possible embodiment, the resistive feedback unit includes:

[0020] Switching transistor circuit;

[0021] Feedback resistor;

[0022] The control pin is electrically connected to the switching transistor circuit;

[0023] The switching transistor circuit is also electrically connected to the feedback resistor.

[0024] In conjunction with the second possible embodiment of this utility model, and in the third possible embodiment, the switching transistor circuit includes:

[0025] First resistor, second resistor, and MOSFET;

[0026] The first end of the first resistor is electrically connected to the control pin, the second end is electrically connected to the first end of the second resistor and the gate of the MOS transistor, and the second end of the second resistor is grounded.

[0027] The source of the MOS transistor is grounded, and its drain is electrically connected to the first terminal of the feedback resistor.

[0028] In conjunction with the first possible embodiment of this utility model, and the fourth possible embodiment, the control module includes:

[0029] Control chip;

[0030] Detection unit;

[0031] Enable unit;

[0032] The detection unit and the enable unit are respectively electrically connected to the control chip;

[0033] The detection unit is used to detect the output volume of the smart speaker;

[0034] The enabling unit is used to control the level of the control pin.

[0035] In conjunction with the first possible embodiment of this utility model, and the fifth possible embodiment, the conversion module includes:

[0036] Conversion chip;

[0037] First filtering unit;

[0038] Second filtering unit;

[0039] Energy storage unit;

[0040] Third filtering unit;

[0041] The first end of the first filter unit, the first end of the second filter unit, and the first end of the energy storage unit are electrically connected.

[0042] The second terminal of the first filter unit is grounded, the second terminal of the second filter unit is electrically connected to the conversion chip, and the second terminal of the energy storage unit is electrically connected to the conversion chip.

[0043] The third filtering unit is electrically connected to the energy storage unit and the conversion chip, respectively.

[0044] In conjunction with the fifth possible implementation of this utility model, and in the sixth possible implementation, the first filtering unit includes:

[0045] First capacitor, second capacitor, third capacitor, and fourth capacitor;

[0046] The first terminals of the first capacitor, the second capacitor, the third capacitor, and the fourth capacitor are connected to the input terminal and the second filter unit and the energy storage unit;

[0047] The second terminals of the first, second, third, and fourth capacitors are all connected to ground.

[0048] In conjunction with the fifth and seventh possible embodiments of this utility model, the energy storage unit includes:

[0049] Inductors and energy storage capacitors;

[0050] The first end of the inductor is electrically connected to the first filter unit and the second filter unit;

[0051] The second end of the inductor is electrically connected to the first end of the energy storage capacitor, and the second end of the energy storage capacitor is electrically connected to the conversion chip.

[0052] In conjunction with the fifth possible implementation of this utility model, and in the eighth possible implementation, the conversion module further includes a voltage stabilizing unit;

[0053] The voltage regulator unit, energy storage unit, and conversion chip are electrically connected and used to regulate the output voltage.

[0054] In conjunction with the eighth possible embodiment of this utility model, and in the ninth possible embodiment, the voltage stabilizing unit includes:

[0055] Zener diode, first Zener resistor and second Zener resistor;

[0056] The first end of the Zener diode is electrically connected to the energy storage unit and the adjustment pin of the conversion chip, the second end is electrically connected to the output pin of the conversion chip and the first end of the first voltage regulator, the second end of the first voltage regulator is electrically connected to the first end of the second voltage regulator, and the second end of the second voltage regulator is grounded.

[0057] The portable smart speaker described in this utility model adjusts the size of the feedback resistor in the resistance feedback module according to the output volume through the control module, thereby adjusting the output voltage of the conversion module. This improves the circuit's efficiency and avoids prolonged high-voltage operation, which could affect the product's battery life. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 This is a module structure diagram of a portable smart speaker according to the present invention;

[0060] Figure 2 This is a circuit diagram of the control module in this utility model;

[0061] Figure 3 This is a circuit diagram of the resistance feedback module in this utility model;

[0062] Figure 4 This is a circuit diagram of the conversion module in this utility model.

[0063] Components and their serial numbers:

[0064] 100 – Control module, 200 – Resistance feedback module, 300 – Conversion module, 310 – First filter unit, 320 – Second filter unit, 330 – Energy storage unit, 340 – Third filter unit, 350 – Voltage regulator unit. Detailed Implementation

[0065] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this utility model.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0067] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0068] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0070] Existing audio products cannot adaptively adjust the power supply voltage according to the real-time power consumption of the product, which reduces efficiency and shortens the product's battery life.

[0071] To address the aforementioned problems, a portable smart speaker is proposed.

[0072] A portable smart speaker, such as Figure 1 , Figure 1This is a structural diagram of a portable smart speaker according to the present invention; it includes a control module 100, a conversion module 300, and a resistance feedback module 200; the conversion module 300 and the resistance feedback module 200 are electrically connected to the control module 100; the resistance feedback module 200 is also electrically connected to the conversion module 300; the conversion module 300 is used to convert the power supply voltage into the operating voltage for circuit use; the control module 100 is used to adjust the value of the feedback resistor in the resistance feedback module 200 according to the output volume, thereby adjusting the output voltage of the conversion module 300. By adjusting the value of the feedback resistor in the resistance feedback module 200 according to the output volume, and thus adjusting the output voltage of the conversion module 300, the circuit efficiency can be improved, and the long-term high-voltage operation can be avoided, which would affect the battery life of the product.

[0073] Specifically, such as Figure 2 , Figure 2 This is a circuit diagram of the control module 100 in this utility model; the control module 100 includes multiple control pins (GPIO); the resistor feedback module 200 includes multiple resistor feedback units; the multiple resistor feedback units are connected in parallel; the multiple control pins (GPIO) are electrically connected to the multiple resistor feedback units respectively, and are used to control the opening or closing of the resistor feedback units according to the instructions of the control module 100.

[0074] Furthermore, such as Figure 3 , Figure 3 The circuit structure diagram of the resistor R feedback module 200 in this utility model is shown. The resistor feedback unit includes a switching transistor circuit and a feedback resistor. The control pin (GPIO) is electrically connected to the switching transistor circuit. The switching transistor circuit is also electrically connected to the feedback resistor R5.

[0075] Specifically, the switching circuit includes a first resistor R3, a second resistor R4, and a MOSFET Q1; the first end of the first resistor R3 is electrically connected to the control pin (GPIO), the second end is electrically connected to the first end of the second resistor R4 and the gate of the MOSFET Q1, and the second end of the second resistor R3 is grounded; the source of the MOSFET Q1 is grounded, and the drain is electrically connected to the first end of the feedback resistor R5.

[0076] Furthermore, the control module 100 includes a control chip U1, a detection unit, and an enable unit; the detection unit and the enable unit are electrically connected to the control chip U1 respectively; the detection unit is used to detect the output volume of the smart speaker; the enable unit is used to control the level of the control pin (GPIO).

[0077] Specifically, such as Figure 4 , Figure 4 This is a circuit diagram of the conversion module 300 in this utility model.

[0078] The conversion module 300 includes a conversion chip U2, a first filter unit 310, a second filter unit 320, an energy storage unit 330, and a third filter unit 340. The first end of the first filter unit 310, the first end of the second filter unit 320, and the first end of the energy storage unit 330 are electrically connected. The second end of the first filter unit 310 is grounded, the second end of the second filter unit 320 is electrically connected to the conversion chip U2, and the second end of the energy storage unit 330 is electrically connected to the conversion chip U2. The third filter unit 340 is electrically connected to both the energy storage unit 330 and the conversion chip U2.

[0079] Specifically, the first filter unit 310 includes a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4;

[0080] The first terminals of the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 are connected to the input terminal, the second filter unit 320, and the energy storage unit 330; the second terminals of the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 are connected to ground.

[0081] Specifically, the energy storage unit 330 includes an inductor L and an energy storage capacitor C5; the first end of the inductor L is electrically connected to the first filter unit 310 and the second filter unit 320, the second end of the inductor L is electrically connected to the first end of the energy storage capacitor C5, and the second end of the energy storage capacitor C5 is electrically connected to the conversion chip U2.

[0082] Furthermore, the conversion module 300 also includes a voltage regulator unit 350; the voltage regulator unit 350, the energy storage unit 330, and the conversion chip U2 are electrically connected to regulate the output voltage.

[0083] Specifically, the voltage regulator unit 350 includes a Zener diode, a first voltage regulator resistor R1, and a second voltage regulator resistor R2; the first end of the Zener diode is electrically connected to the adjustment pin of the energy storage unit 330 and the conversion chip U2, the second end is electrically connected to the output pin of the conversion chip U2 and the first end of the first voltage regulator resistor R1, the second end of the first voltage regulator resistor R1 is electrically connected to the first end of the second voltage regulator resistor R2, and the second end of the second voltage regulator resistor R2 is grounded.

[0084] The working principle of this application is as follows:

[0085] When the smart speaker is powered on, the audio signal first passes through the control chip (U1) in the control module (MCU_DSP). The control chip (U1) in the control module (MCU_DSP) detects the energy level of the signal and drives its enable unit to output a level to the control pin (GPIO) to control the opening or closing of the external MOS, thereby changing the feedback resistor at the FB of the conversion chip (U2) of the conversion module (DC-DC), and thus adjusting its output voltage.

[0086] When the detection unit detects that the volume of the smart speaker is less than 30%, the control chip (U1) in the control module (MCU_DSP) detects a relatively weak signal, and the enable unit outputs a level to the control pin (GPIO) to control V1-Vn to a low level. The MOS transistors Q1-Qn are in the off state, and the output of the conversion chip (U2) of the conversion module (DC-DC) is PVCC = 0.6*(1+R1 / R2) = 6.6V.

[0087] When the detection unit detects that the volume of the smart speaker has increased by 50%, the control chip (U1) in the control module (MCU_DSP) detects the increased signal energy and enables the unit to output a level to the control pin (GPIO) to control V1 to be high and V2-Vn to be low, thus turning on MOSQ1. The feedback resistor of the conversion chip (U2) in the conversion module (DC-DC) changes, and PVCC = 0.6 * (1 + R1 / (R2 & R3)) = 12.6V.

[0088] When the detection unit detects that the volume of the smart speaker continues to increase to 100%, the control chip (U1) in the control module (MCU_DSP) detects that the signal energy is continuously increasing, and enables the unit to output a level to the control pin (GPIO) to control V1-Vn to a high level, thereby turning on more MOSFETs Qn, PVCC = 0.6*(1+R1 / (R2&R3...Rn)), thus achieving a higher output voltage to meet the needs of the smart speaker.

[0089] Because the greater the input and output voltage difference, the lower the efficiency of the conversion chip (U2) in the DC-DC converter module, the overall efficiency of the smart speaker can be improved through adaptive voltage adjustment.

[0090] The portable smart speaker implementing this utility model adjusts the size of the feedback resistor in the resistance feedback module according to the output volume through the control module, thereby adjusting the output voltage of the conversion module, which can improve the working efficiency of the circuit and avoid the impact of long-term high-voltage operation on the product's battery life.

[0091] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A portable smart speaker, characterized in that it comprises: Control module; Conversion module; Resistance feedback module; The conversion module and the resistance feedback module are respectively electrically connected to the control module; The resistance feedback module is also electrically connected to the conversion module; The conversion module is used to convert the power supply voltage into the operating voltage for use by the circuit. The control module is used to adjust the size of the feedback resistor in the resistance feedback module according to the output volume, thereby adjusting the output voltage of the conversion module.

2. The portable smart speaker according to claim 1, characterized in that, The control module includes: Multiple control pins; The resistance feedback module includes: Multiple resistance feedback units; The plurality of resistance feedback units are connected in parallel; The plurality of control pins are electrically connected to the plurality of resistive feedback units respectively, and are used to control the opening or closing of the resistive feedback units according to the instructions of the control module.

3. The portable smart speaker according to claim 2, characterized in that, The resistance feedback unit includes: Switching transistor circuit; Feedback resistor; The control pin is electrically connected to the switching transistor circuit; The switching transistor circuit is also electrically connected to the feedback resistor.

4. The portable smart speaker according to claim 3, characterized in that, The switching transistor circuit includes: First resistor, second resistor, and MOSFET; The first end of the first resistor is electrically connected to the control pin, the second end is electrically connected to the first end of the second resistor and the gate of the MOS transistor, and the second end of the second resistor is grounded. The source of the MOS transistor is grounded, and its drain is electrically connected to the first terminal of the feedback resistor.

5. The portable smart speaker according to claim 2, characterized in that, The control module includes: Control chip; Detection unit; Enable unit; The detection unit and the enable unit are respectively electrically connected to the control chip; The detection unit is used to detect the output volume of the smart speaker; The enabling unit is used to control the level of the control pin.

6. The portable smart speaker according to claim 2, characterized in that, The conversion module includes: Conversion chip; First filtering unit; Second filtering unit; Energy storage unit; Third filtering unit; The first end of the first filter unit, the first end of the second filter unit, and the first end of the energy storage unit are electrically connected. The second terminal of the first filter unit is grounded, the second terminal of the second filter unit is electrically connected to the conversion chip, and the second terminal of the energy storage unit is electrically connected to the conversion chip. The third filtering unit is electrically connected to the energy storage unit and the conversion chip, respectively.

7. The portable smart speaker according to claim 6, characterized in that, The first filtering unit includes: First capacitor, second capacitor, third capacitor, and fourth capacitor; The first terminals of the first capacitor, the second capacitor, the third capacitor, and the fourth capacitor are connected to the input terminal and the second filter unit and the energy storage unit; The second terminals of the first, second, third, and fourth capacitors are all connected to ground.

8. The portable smart speaker according to claim 6, characterized in that, The energy storage unit includes: Inductors and energy storage capacitors; The first end of the inductor is electrically connected to the first filter unit and the second filter unit; The second end of the inductor is electrically connected to the first end of the energy storage capacitor, and the second end of the energy storage capacitor is electrically connected to the conversion chip.

9. The portable smart speaker according to claim 2, characterized in that, The conversion module also includes a voltage regulator unit; The voltage regulator unit, energy storage unit, and conversion chip are electrically connected and used to regulate the output voltage.

10. The portable smart speaker according to claim 9, characterized in that, The voltage stabilizing unit includes: Zener diode, first Zener resistor and second Zener resistor; The first end of the Zener diode is electrically connected to the energy storage unit and the adjustment pin of the conversion chip, the second end is electrically connected to the output pin of the conversion chip and the first end of the first voltage regulator, the second end of the first voltage regulator is electrically connected to the first end of the second voltage regulator, and the second end of the second voltage regulator is grounded.

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