Hacker-prevention microphone forbidding circuit of intelligent voice sound box

Abstract

The utility model discloses an anti-hacking microphone-forbidding circuit of an intelligent voice sound box. The anti-hacking microphone-forbidding circuit comprises an MCU, a key circuit, a switching circuit, a Mic circuit and a power supply circuit. The MCU is electrically connected with the key circuit, the power supply circuit and the switching circuit respectively; the switching circuit is connected between the power supply circuit and the MIC circuit; and the MCU controls the on / off of the switching circuit according to the obtained input signal of the key circuit so as to connect or disconnect the connection between the power supply circuit and the Mic circuit. By implementing the intelligent voice product, sensitive privacy information can be timely prevented from being intercepted through the MIC of the product, the cost is low, the power consumption is low, the safety and the reliability are realized, and the problem that the privacy information of a user is leaked due to the fact that the voice information acquired by the MIC is easily intercepted by a hacker in the existing intelligent voice product is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of intelligent voice's ban microphone technology, especially intelligent voice sound box's anti -hacker ban microphone circuit. BACKGROUND

[0002] With the wide application of intelligent voice sound box and the popularization of A1 technology, intelligent sound box is filled in people's living area or office area. Intelligent sound box belongs to the call product, and a digital microphone (MIC) is generally selected. The digital microphone transmits in the form of digital signal and has strong anti-interference ability. It can obtain better effect than analog microphone such as electret in complex electromagnetic environment, such as mobile phone, tablet computer, Bluetooth conference sound box and other devices with RF communication and high-speed digital circuit.

[0003] With the increasing information interaction between man-machine (MIC)-network server (cloud), the MIC of intelligent voice product is in the monitoring state in normal state when information is delivered, and important information is easily intercepted by network hacker, which leads to serious consequences.

[0004] Therefore, at present, a network security anti-hacker ban microphone circuit is needed to avoid sensitive information being intercepted through the MIC of the product in time according to the needs of users. INVENTION CONTENTS

[0005] The existing intelligent voice product is easy to be intercepted by hacker to obtain voice information, which leads to the leakage of user's private information.

[0006] In view of the above problems, an anti-hacker ban microphone circuit of intelligent voice sound box is provided, which comprises a key circuit, a switch circuit and an MCU. The MCU controls the opening or closing of the switch circuit according to the input signal of the key circuit to turn on or turn off the connection between the power supply circuit and the Mic circuit, so as to avoid sensitive private information being intercepted through the MIC of the product in time. The anti-hacker ban microphone circuit in the utility model has low cost, low power consumption and safety and reliability, and solves the problem that the existing intelligent voice product is easy to be intercepted by hacker to obtain voice information, which leads to the leakage of user's private information.

[0007] An anti-hacker ban microphone circuit of intelligent voice sound box comprises:

[0008] MCU;

[0009] key circuit;

[0010] switch circuit;

[0011] Mic circuit;

[0012] power supply circuit;

[0013] The MCU is electrically connected with the key circuit, the power supply circuit and the switch circuit respectively;

[0014] The switch circuit is connected between the power supply circuit and the MIC circuit;

[0015] The MCU controls the switch circuit to be turned on or turned off according to the input signal of the key circuit, so as to turn on or turn off the connection between the power supply circuit and the MIC circuit.

[0016] In a first possible implementation of the anti-hacker microphone blocking circuit of the intelligent voice sound box, the key circuit comprises:

[0017] An operation key;

[0018] A state indicating lamp;

[0019] The state indicating lamp and the operation key are electrically connected with the first pin and the second pin of the MCU respectively;

[0020] The operation key is used for inputting an operation instruction signal, and the state indicating lamp is used for displaying a key state.

[0021] In a second possible implementation of the anti-hacker microphone blocking circuit of the intelligent voice sound box, the switch circuit is a MOS tube switch circuit.

[0022] In a third possible implementation of the anti-hacker microphone blocking circuit of the intelligent voice sound box, the MOS tube switch circuit comprises:

[0023] A MOS tube, a first resistor, a second resistor and a first capacitor;

[0024] The first end of the first resistor is electrically connected with the third pin of the MCU, and the second end is electrically connected with the first end of the second resistor, the first end of the first capacitor and the gate of the MOS tube;

[0025] The second end of the second resistor, the second end of the first capacitor and the source of the MOS tube are connected in common and electrically connected with the power supply circuit;

[0026] The drain of the MOS tube is electrically connected with the MIC circuit.

[0027] In a fourth possible implementation of the anti-hacker microphone blocking circuit of the intelligent voice sound box, the power supply circuit comprises:

[0028] An input unit;

[0029] A conversion chip;

[0030] An output unit;

[0031] The input unit is electrically connected with the conversion chip, and is used for inputting a 5V voltage;

[0032] The conversion chip is used for converting the 5V voltage into a 3.3V voltage;

[0033] The output unit is electrically connected with the conversion chip, and is used for outputting the 3.3V voltage to each circuit.

[0034] In combination with the fourth possible implementation manner of the utility model, in the fifth possible implementation manner, the input unit comprises:

[0035] A second capacitor and a third capacitor;

[0036] The first end of the second capacitor and the third capacitor is grounded, and the second end is electrically connected with an input power supply and a first pin of the conversion chip.

[0037] In combination with the fifth possible implementation manner of the utility model, in the sixth possible implementation manner, the output unit comprises:

[0038] A first inductor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a third resistor, a fourth resistor and a fifth resistor;

[0039] The first end of the first inductor is electrically connected with a second pin of the conversion chip, and the second end is commonly connected with the first end of the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor, the fourth resistor and the fifth resistor;

[0040] The second end of the fourth capacitor, the fifth capacitor and the sixth capacitor is commonly connected with the first end of the third resistor and grounded, and the second end of the fourth resistor and the seventh capacitor is commonly connected with the second end of the third resistor and electrically connected with a third pin of the conversion chip;

[0041] The second end of the fifth resistor is connected with an output end.

[0042] In combination with the anti-hacker microphone blocking circuit of the intelligent voice sound box, in the seventh possible implementation manner, the Mic circuit comprises:

[0043] A first Mic circuit, a second Mic circuit and a third Mic circuit;

[0044] The power input end of the first Mic circuit, the second Mic circuit and the third Mic circuit is electrically connected with the output end of the switch circuit.

[0045] In combination with the anti-hacker microphone blocking circuit of the intelligent voice sound box, in the eighth possible implementation manner, the MCU comprises:

[0046] A processing unit;

[0047] The processing unit is used for converting the input key signal into a high level signal or a low level signal to control the conduction or turn-off of the switch circuit.

[0048] In combination with the eighth possible implementation of the present application, in the ninth possible implementation, the MCU further comprises:

[0049] a counting unit;

[0050] The processing unit is used for counting the number of key operations and marking according to the sequence.

[0051] The anti-hacker microphone blocking circuit of the intelligent voice sound box is implemented, the key circuit, the switch circuit and the MCU are arranged, the MCU controls the opening or closing of the switch circuit according to the input signal of the key circuit to turn on or turn off the connection between the power supply circuit and the Mic circuit, so that the sensitive private information is timely avoided from being intercepted through the MIC of the product. The anti-hacker microphone blocking circuit in the present application has low cost, low power consumption and high safety and reliability, and solves the problem that the existing intelligent voice product is easy to be intercepted by hackers to obtain voice information, resulting in the leakage of private information of users. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0053] Figure 1 It is a connection schematic diagram of the anti-hacker microphone blocking circuit module of the intelligent voice sound box in the present application;

[0054] Figure 2 It is a circuit structure schematic diagram of the key circuit and the MCU in the present application;

[0055] Figure 3 It is a circuit structure schematic diagram of the power supply circuit in the present application;

[0056] Figure 4 It is a circuit structure schematic diagram of the switch circuit in the present application;

[0057] Figure 5 It is a circuit structure schematic diagram of the Mic circuit in the present application. DETAILED DESCRIPTION

[0058] The technical solutions in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0059] 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 the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0060] It is to be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly on the other element with intervening elements present. When an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or indirectly connected or coupled to the other element with intervening elements present.

[0061] It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, specify relative positions or orientations based on the orientations or positions shown in the drawings, and are used only for convenience in describing the present application and simplifying the description, and thus cannot be construed as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be construed as limiting the present application.

[0062] In addition, the terms "first", "second", "third", etc. are used herein only to describe various conditions, and cannot be construed as indicating or implying relative importance or an implicitly indicated number of indicated technical features. Therefore, features defined with "first", "second" or "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "plurality" is two or more, unless otherwise specifically limited.

[0063] The existing intelligent voice product is easy to be intercepted by hackers to obtain voice information, resulting in leakage of user privacy information.

[0064] In view of the above problems, a hacker-proof mute circuit for an intelligent voice sound box is provided.

[0065] A hacker-proof mute circuit for an intelligent voice sound box, comprising Figure 1 , Figure 1The utility model discloses a kind of intelligent voice speaker's anti-hacker microphone blocking circuit module connection schematic diagram;Including MCU 100, keying circuit 200, switch circuit 400, Mic circuit 500, power supply circuit 300;MCU 100 is electrically connected with keying circuit 200, power supply circuit 300 and switch circuit 400 respectively;Switch circuit 400 is connected between power supply circuit 300 and MIC circuit 500;MCU 100 controls the opening or closure of switch circuit 400 according to the input signal of keying circuit 200, to turn on or turn off the connection between power supply circuit 300 and Mic circuit 500.By setting keying circuit 200, switch circuit 400 and MCU 100, MCU 100 controls the opening or closure of switch circuit 400 according to the input signal of keying circuit 200, to turn on or turn off the connection between power supply circuit 300 and Mic circuit 500, to avoid sensitive private information in time by the MIC of product being intercepted.The anti-hacker microphone blocking circuit in the utility model has low cost, low power consumption and is safe and reliable, solves the problems that the existing intelligent voice product is easily intercepted by hacker to obtain voice information, leading to the leakage of user's private information.

[0066] In the embodiment, power supply circuit 300 provides power supply for the whole circuit, keying circuit 200 is used to generate microphone blocking / turning-on signal to MCU 100 for user, and the product is in the default state of turning-on microphone (MOS tube is in the state of turning on) when power is on, when the key of keying circuit 200 is pressed, a pulse signal from high level to low level is generated to MCU 100, and low level is outputted to control MOS tube to open circuit after the processing unit of MCU 100 is processed, so as to disconnect the 3.3V power supply of MIC circuit 500 to achieve the effect of microphone blocking, and MCU 100 marks the state of MIC as microphone blocking state (counting unit marks it as "1"), when the key is pressed next time, a pulse signal from low level to high level is generated to MCU 100, high level is outputted to control MOS tube to turn on after the processing unit of MCU 100 is processed, so as to turn on the 3.3V power supply of MIC circuit 500 to achieve the effect of turning-on microphone, and MCU 100 marks the state of MIC as microphone turning-on state (counting unit marks it as "0"), and the microphone blocking / turning-on function is realized by cyclic detection when the key of keying circuit 200 is pressed next time.

[0067] In the embodiment, DC-DC circuit is used in power supply module, and 5V direct current voltage is converted into 3.3V direct current voltage.

[0068] As Figure 2 , Figure 2The utility model discloses a circuit structure schematic drawing of the key circuit 200 and MCU 100 in the utility model, and the key circuit 200 includes operation key (MUTE_BUTTON), state indicating lamp (MUTE_STATE_L), and state indicating lamp (MUTE_STATE_L) is connected with the first pin (PA1) and the second pin (PA2) electricity of MCU 100 respectively with operation key (MUTE_BUTTON), and operation key (MUTE_BUTTON) is used for input operation instruction signal, and state indicating lamp (MUTE_STATE_L) is used for showing the state of operation key (MUTE_BUTTON).

[0069] As Figure 4 , Figure 4 The utility model discloses a circuit structure schematic drawing of the switch circuit in the utility model, and switch circuit 400 is MOS tube Q1 switch circuit 400.

[0070] Specifically, MOS tube Q1 switch circuit 400 includes MOS tube Q1, first resistance R1, second resistance R2, first capacitor C1, and the first end of first resistance R1 is connected with the third pin (PA4) electricity of MCU 100, and the second end is connected with the first end of second resistance R2, the first end of first capacitor C1 and the gate of MOS tube Q1 electricity, and the second end of second resistance R2, the second end of first capacitor C1, the source of MOS tube Q1 are connected with power supply circuit 300 after being connected in common, and the drain of MOS tube Q1 is connected with Mic circuit 500 electricity.

[0071] As Figure 3 , Figure 3 The utility model discloses a circuit structure schematic drawing of power supply circuit 300 in the utility model, and power supply circuit 300 includes input unit 310, conversion chip U2, output unit 320, and input unit 310 is connected with conversion chip U2 electricity, is used for input 5V voltage, and conversion chip U2 is used for converting 5V voltage into 3.3V voltage, and output unit 320 is connected with conversion chip U2 electricity, is used for 3.3V voltage is output to each circuit.

[0072] Specifically, the input unit includes second capacitor C2 and third capacitor C3, and the first end of second capacitor C2 and third capacitor C3 is grounded, and the second end is connected with input power supply and the first pin (IN) of conversion chip U2 electricity.

[0073] Specifically, the output unit includes:

[0074] The first inductor L1, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the third resistor R3, the fourth resistor R4 and the fifth resistor R5; the first inductor L1, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the third resistor R3, the fourth resistor R4 and the fifth resistor R5; the first end of the first inductor L1 is electrically connected with the second pin (LX) of the conversion chip, and the second end is connected with the first end of the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the fourth resistor R4 and the fifth resistor R5; the second end of the fourth capacitor C4, the fifth capacitor C5 and the sixth capacitor C6 is connected with the first end of the third resistor R3 and grounded, the second end of the fourth resistor R4 and the seventh capacitor C7 is connected with the second end of the third resistor R3 and connected with the third pin (FB) of the conversion chip U2; the second end of the fifth resistor R5 is connected with the output end.

[0075] Further, as Figure 5 , Figure 5 The circuit structure schematic diagram of the Mic circuit in the utility model. The Mic circuit comprises: a first Mic circuit 510, a second Mic circuit 520 and a third Mic circuit 530; the power supply ends of the first Mic circuit 510, the second Mic circuit 520 and the third Mic circuit 530 are electrically connected with the output end of the switching circuit 400.

[0076] Further, the MCU 100 comprises a processing unit; the processing unit is used for converting the input key signal into a high level signal or a low level signal to control the conduction or the shutdown of the switching circuit 400.

[0077] Further, the MCU 100 further comprises a counting unit; the processing unit is used for counting the number of key operations and marking according to the sequence.

[0078] The anti-hacker microphone blocking circuit of the intelligent voice sound box is implemented, the key circuit 200, the switching circuit 400 and the MCU 100 are arranged, the MCU 100 controls the opening or the closing of the switching circuit 400 according to the input signal of the key circuit 200 to conduct or shut down the connection between the power supply circuit 300 and the Mic circuit 500, so that the sensitive private information is intercepted through the MIC of the product in time. The anti-hacker microphone blocking circuit in the utility model has the advantages of low cost, low power consumption and safety and reliability, and solves the problems that the existing intelligent voice product is easy to be intercepted by hackers to obtain voice information, and the private information of the user is leaked.

[0079] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A hacking prevention mute circuit of an intelligent voice speaker, comprising: an MCU; a key circuit; a switch circuit; a Mic circuit; a power supply circuit; the MCU is electrically connected with the key circuit, the power supply circuit and the switch circuit respectively; the switch circuit is connected between the power supply circuit and the Mic circuit; the key circuit is used to generate a pulse signal from high level to low level or from low level to high level, and transmit the pulse signal to the MCU; the MCU is used to cyclically detect the key circuit to obtain the pulse signal; the MCU controls the switch circuit to be on or off according to the input signal of the key circuit to turn on or off the connection between the power supply circuit and the Mic circuit; the key circuit comprises: an operation key; a status indicator; the status indicator and the operation key are electrically connected with the first pin and the second pin of the MCU respectively; the operation key is used to input an operation instruction signal, and the status indicator is used to display the key state; the power supply circuit comprises: an input unit; a conversion chip; an output unit; the input unit is electrically connected with the conversion chip and used to input a 5V voltage; the conversion chip is used to convert the 5V voltage into a 3.3V voltage; the output unit is electrically connected with the conversion chip and used to output the 3.3V voltage to each circuit; the MCU comprises: a processing unit; the processing unit is used to convert the input key signal into a high level signal or a low level signal to control the switch circuit to be on or off; the MCU further comprises: a counting unit; the processing unit is used to count the number of key operations and mark according to the sequence.

2. The anti-hacking, anti-eavesdropping circuit for a smart voice speaker of claim 1, wherein, the switch circuit is a MOS tube switch circuit.

3. The anti-hacking, anti-eavesdropping circuit of a smart voice enabled speaker of claim 2, wherein, the MOS tube switch circuit comprises: a MOS tube, a first resistor, a second resistor and a first capacitor; the first end of the first resistor is electrically connected with the third pin of the MCU, the second end is electrically connected with the first end of the second resistor, the first end of the first capacitor and the gate of the MOS tube; the second end of the second resistor, the second end of the first capacitor and the source of the MOS tube are commonly connected and electrically connected with the power supply circuit; the drain of the MOS tube is electrically connected with the Mic circuit.

4. The anti-hacking, anti-eavesdropping circuit for a smart voice speaker of claim 1, wherein, the input unit comprises: a second capacitor and a third capacitor; the first ends of the second capacitor and the third capacitor are grounded, and the second ends are electrically connected with an input power supply and the first pin of the conversion chip.

5. The anti-hacking, anti-eavesdropping circuit of a smart voice enabled speaker of claim 4, wherein, the output unit comprises: a first inductor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a third resistor, a fourth resistor and a fifth resistor; the first end of the first inductor is electrically connected with the second pin of the conversion chip, and the second end is commonly connected with the first ends of the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor, the fourth resistor and the fifth resistor; the second ends of the fourth capacitor, the fifth capacitor and the sixth capacitor are commonly connected with the first end of the third resistor and grounded, the second ends of the fourth resistor and the seventh capacitor are commonly connected with the second end of the third resistor and connected with the third pin of the conversion chip; the second end of the fifth resistor is connected with an output end.

6. The hack prevention circuit for a smart voice speaker of claim 1, wherein, The Mic circuit comprises: The first Mic circuit, the second Mic circuit and the third Mic circuit; The power input ends of the first Mic circuit, the second Mic circuit and the third Mic circuit are electrically connected with the output end of the switch circuit.

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