Sound control invisible lock

Abstract

The utility model relates to a sound control invisible lock, which belongs to the technical field of electronic locks and comprises a main control module, a first power supply module, a motor driving module, a voice module and a second power supply module. And the safety of the electronic lock can be ensured while the unlocking convenience of the electronic lock is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic locks, and in particular relates to a voice-controlled invisible lock. Background Art

[0002] There are many types of electronic locks on the market, among which invisible card locks are popular for their unique installation method. This type of lock does not require any panel, but only needs to install the lock body in a designated position inside the cabinet, and unlock it by swiping the card on the front of the cabinet. However, this type of lock has the following disadvantages: if the card is broken, the lock cannot be unlocked, and there are potential safety hazards. If the card is lost and picked up by others, it is easy for others to steal it. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a voice-controlled invisible lock.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A voice-controlled invisible lock comprises a main control module, a first power supply module, a motor drive module, a voice module and a second power supply module, wherein the input end of the main control module is connected to the output ends of the motor drive module and the voice module respectively, and the output end of the main control module is connected to the input end of the motor drive module, and the main control module, the motor drive module and the voice module are connected to the first power supply module and the second power supply module respectively; the voice module is used to collect user voice information, and the main control module is used to transmit a control instruction to the motor drive module according to the user voice information collected by the voice module.

[0006] A voice-controlled invisible lock according to an embodiment of the utility model has at least the following technical effects: using a person's unique voice to control unlocking, improving the convenience of unlocking an electronic lock while also ensuring the safety of the electronic lock.

[0007] According to some embodiments of the present utility model, the main control module includes a controller, a first switch, a second resistor and a reset circuit, the tenth pin of the controller is connected to one end of the first switch, the other end of the first switch is connected to one end of the second resistor, the other end of the second resistor is grounded, and the seventh pin of the controller is grounded; the reset circuit includes a third resistor and a seventh capacitor, one end of the third resistor is connected to the ninth pin of the controller, the other end of the third resistor is connected to the fourth pin of the controller, one end of the seventh capacitor is connected to the fourth pin of the controller, and the other end of the seventh capacitor is grounded.

[0008] According to some embodiments of the utility model, the first power supply module includes a power supply circuit and a first voltage stabilizing circuit; the power supply circuit includes a built-in power supply and a first diode, the first pin of the built-in power supply is connected to the positive pole of the first diode, the second pin of the built-in power supply is grounded, the cathode of the first diode is connected to the input end of the first voltage stabilizing circuit, and the output end of the first voltage stabilizing circuit is connected to the input end of the controller.

[0009] According to some embodiments of the utility model, the first voltage stabilizing circuit includes a first step-down chip, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor, the first pin of the first step-down chip is respectively connected to the cathode of the first diode, one end of the first capacitor and one end of the second capacitor, the second pin of the first step-down chip is grounded, the third pin of the first step-down chip is respectively connected to the ninth pin of the controller, one end of the third capacitor and one end of the fourth capacitor, the other end of the first capacitor is grounded, the other end of the second capacitor is grounded, the other end of the third capacitor is grounded, and the other end of the fourth capacitor is grounded.

[0010] According to some embodiments of the utility model, the second power supply module includes an external power supply circuit and a second voltage stabilizing circuit, the external power supply circuit includes a horizontal female socket and a sixth resistor, the ninth pin of the horizontal female socket is connected to the input end of the second voltage stabilizing circuit, the output end of the second voltage stabilizing circuit is connected to the ninth pin of the controller, the first pin of the horizontal female socket is grounded, the fifth pin of the horizontal female socket is connected to one end of the sixth resistor, and the other end of the sixth resistor is grounded.

[0011] According to some embodiments of the utility model, the second voltage stabilizing circuit includes a second step-down chip, a tenth capacitor, an eleventh capacitor, a twelfth capacitor and a thirteenth capacitor, the first pin of the second step-down chip is respectively connected to the ninth pin of the horizontal mother seat, one end of the tenth capacitor and one end of the eleventh capacitor, the second pin of the second step-down chip is grounded, the third pin of the second step-down chip is respectively connected to the ninth pin of the controller, one end of the twelfth capacitor and one end of the thirteenth capacitor, the other end of the tenth capacitor is grounded, the other end of the eleventh capacitor is grounded, the other end of the twelfth capacitor is grounded, and the other end of the thirteenth capacitor is grounded.

[0012] According to some embodiments of the utility model, the motor drive module includes a motor drive chip, a fourth resistor, a fifth resistor, an eighth capacitor, a ninth capacitor and a motor, the second pin of the motor drive chip is connected to the fourteenth pin of the controller through the fourth resistor, the third pin of the motor drive chip is connected to the thirteenth pin of the controller through the fifth resistor, the fifth pin of the motor drive chip is respectively connected to one end of the ninth capacitor and one end of the motor, the eighth pin of the motor drive chip is respectively connected to the other end of the ninth capacitor and the other end of the motor, the fourth pin of the motor drive chip is respectively connected to the first power supply module, the second power supply module and one end of the eighth capacitor, the other end of the eighth capacitor is grounded, and the sixth pin and the seventh pin of the motor drive chip are both grounded.

[0013] According to some embodiments of the utility model, the voice module includes a voice chip, a first resistor, a fifth capacitor, a sixth capacitor and a recorder, the first pin of the voice chip is respectively connected to the first power supply module, the second power supply module and one end of the fifth capacitor, the other end of the fifth capacitor is grounded, the second pin of the voice chip is connected to one end of the recorder, the third pin of the voice chip is connected to one end of the first resistor, the other end of the first resistor is connected to the other end of the recorder, the fourth pin of the voice chip is connected to the other end of the recorder, the fifth pin of the voice chip is respectively connected to the ninth pin of the controller and one end of the sixth capacitor, the other end of the sixth capacitor is grounded, the eighth pin of the voice chip is connected to the eleventh pin of the controller, the ninth pin of the voice chip is connected to the sixteenth pin of the controller, and the tenth pin of the voice chip is grounded; the voice module is used to collect the user's unlocking voice, the main control module is used to receive and compare whether the unlocking voice collected by the voice module is correct and send an unlocking instruction to the motor drive module when the unlocking voice is correct, and the motor drive module is used to complete the unlocking action according to the unlocking instruction of the main control module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0015] Figure 1 A circuit diagram of a main control module provided in one embodiment of the utility model;

[0016] Figure 2 A circuit diagram of a first power supply module provided in one embodiment of the utility model;

[0017] Figure 3 A circuit diagram of a second power supply module provided in one embodiment of the utility model;

[0018] Figure 4 A circuit diagram of a motor drive module provided in one embodiment of the utility model;

[0019] Figure 5 The present invention is a circuit diagram of a voice module provided in one embodiment.

[0020] Figure markings: R1-R6, first resistor-sixth capacitor; C1-C13, first capacitor-thirteenth capacitor; U1, first buck chip; U2, voice chip; U3, controller; U4, motor drive chip; U5, second buck chip; T1, horizontal mother socket; T2, motor; T3, recorder; T4, built-in power supply; D1, first diode; S1, first switch. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] Please refer to Figure 1-5 A voice-controlled invisible lock provided in this embodiment includes a main control module, a first power supply module, a motor drive module, a voice module and a second power supply module. The input end of the main control module is connected to the output end of the motor drive module, and the output end of the main control module is respectively connected to the input ends of the motor drive module and the voice module. The main control module, the motor drive module and the voice module are respectively connected to the first power supply module and the second power supply module; the voice module is used to collect user voice information, and the main control module is used to transmit a control instruction to the motor drive module according to the user voice information collected by the voice module.

[0023] In this embodiment, the voice-controlled invisible lock captures the user's voice command through the built-in voice module, and transmits it to the main control module for logical judgment after recognition. If it is judged to be a valid unlocking command, the main control module sends a control signal to the motor drive module to drive the motor to perform the unlocking action, realizing a contactless and convenient voice-controlled unlocking experience. At the same time, the system uses dual power supply modules to ensure stable power supply and improve overall safety and reliability.

[0024] Please refer to Figure 1In a further embodiment of the utility model, the main control module includes a controller U3, a first switch S1, a second resistor R2 and a reset circuit, the tenth pin of the controller U3 is connected to one end of the first switch S1, the other end of the first switch S1 is connected to one end of the second resistor R2, the other end of the second resistor R2 is grounded, and the seventh pin of the controller U3 is grounded; the reset circuit includes a third resistor R3 and a seventh capacitor C7, one end of the third resistor R3 is connected to the ninth pin of the controller U3, the other end of the third resistor R3 is connected to the fourth pin of the controller U3, one end of the seventh capacitor C7 is connected to the fourth pin of the controller U3, and the other end of the seventh capacitor C7 is grounded.

[0025] Among them, the controller U3 serves as the main control chip, is responsible for receiving and processing signals, and sending control instructions according to the processing results; the first switch S1 is used to manually reset the system; the second resistor R2 is a current limiting resistor, which protects the controller U3 from being affected by excessive current when it is grounded through the first switch S1; the third resistor R3 and the seventh capacitor C7 constitute a reset circuit, which is used to reset the state of the controller U3 when the system is powered on or when needed, to ensure that the system starts running from a known state.

[0026] In this embodiment, the reset circuit built into the main control module ensures that the system can start running from a known safe state each time it is powered on, thereby improving the stability and reliability of the system.

[0027] Please refer to Figure 1 In a further embodiment of the utility model, the first power supply module includes a power supply circuit and a first voltage stabilizing circuit; the power supply circuit includes a built-in power supply T4 and a first diode D1, the first pin of the built-in power supply T4 is connected to the positive electrode of the first diode D1, the second pin of the built-in power supply T4 is grounded, the negative electrode of the first diode D1 is connected to the input end of the first voltage stabilizing circuit, and the output end of the first voltage stabilizing circuit is connected to the input end of the controller U3. In this embodiment, the first power supply module can provide a stable power supply for the voice-controlled invisible lock through the power supply circuit and the voltage stabilizing circuit, ensuring that the main control module, the motor drive module and the voice module can work normally without being affected by voltage fluctuations. At the same time, the first diode D1 plays a role of rectification and protection in the power supply circuit, preventing the reverse voltage from damaging the subsequent circuit, and improving the safety and reliability of the system. Among them, the built-in power supply T4 provides the original DC voltage as the energy source of the entire power supply system; the first diode D1: as an anti-reverse connection diode, ensures that the current of the built-in power supply T4 can only flow in one direction to prevent the circuit from being damaged due to the reverse connection of the power supply; the first voltage stabilizing circuit receives the voltage from the first diode D1 and converts it into a stable voltage output through the voltage stabilizing element. This stable voltage is the operating voltage for the controller U3 and other modules that require a stable voltage.

[0028] Please refer to Figure 2In a further embodiment of the utility model, the first voltage stabilizing circuit includes a first buck chip U1, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4, the first pin of the first buck chip U1 is respectively connected to the cathode of the first diode D1, one end of the first capacitor C1 and one end of the second capacitor C2, the second pin of the first buck chip U1 is grounded, the third pin of the first buck chip U1 is respectively connected to the ninth pin of the controller U3, one end of the third capacitor C3 and one end of the fourth capacitor C4, the other end of the first capacitor C1 is grounded, the other end of the second capacitor C2 is grounded, the other end of the third capacitor C3 is grounded, and the other end of the fourth capacitor C4 is grounded.

[0029] Among them, the first step-down chip U1 is used to convert the unstable original voltage into a stable output voltage to meet the requirements of the subsequent circuits such as the controller U3 for voltage stability and accuracy; the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 are filter capacitors, which can filter out high-frequency noise and ripples in the voltage to ensure the smoothness and stability of the output voltage and improve the stability of the output voltage.

[0030] In this embodiment, the first voltage stabilization circuit uses filter capacitors at both the input and output ends through the first step-down chip U1 and multiple filter capacitors, which effectively removes ripple and noise in the voltage, improves the purity of the power supply, reduces the impact of power supply fluctuations on system performance, and provides a stable and clean power supply for the controller U3, ensuring that the system can operate reliably.

[0031] Please refer to Figure 3 In a further embodiment of the utility model, the second power supply module includes an external power supply circuit and a second voltage stabilizing circuit, the external power supply circuit includes a horizontal socket T1 and a sixth resistor R6, the ninth pin of the horizontal socket T1 is connected to the input end of the second voltage stabilizing circuit, the output end of the second voltage stabilizing circuit is connected to the ninth pin of the controller U3, the first pin of the horizontal socket T1 is grounded, the fifth pin of the horizontal socket T1 is connected to one end of the sixth resistor R6, and the other end of the sixth resistor R6 is grounded.

[0032] Among them, the horizontal female socket T1 serves as an interface for an external power supply, connecting the electronic lock to the external power supply and providing power for the electronic lock; the sixth resistor R6 is a current limiting resistor to prevent the external power supply from causing excessive current and damaging subsequent circuits.

[0033] In this embodiment, the combination of the first power supply module and the second power supply module provides a more reliable power supply guarantee. Even if the main power supply (first power supply module) fails, the system can still continue to work through the external power supply (second power supply module), thereby enhancing the stability and reliability of the system.

[0034] At the same time, the second power supply module also includes a voltage stabilization circuit, ensuring that a stable and clean power supply is provided to the controller U3, reducing the impact of power supply fluctuations on system performance.

[0035] In a further embodiment of the utility model, the second voltage stabilizing circuit includes a second step-down chip U5, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12 and a thirteenth capacitor C13, the first pin of the second step-down chip U5 is respectively connected to the ninth pin of the horizontal mother socket T1, one end of the tenth capacitor C10 and one end of the eleventh capacitor C11, the second pin of the second step-down chip U5 is grounded, the third pin of the second step-down chip U5 is respectively connected to the ninth pin of the controller U3, one end of the twelfth capacitor C12 and one end of the thirteenth capacitor C13, the other end of the tenth capacitor C10 is grounded, the other end of the eleventh capacitor C11 is grounded, the other end of the twelfth capacitor C12 is grounded, and the other end of the thirteenth capacitor C13 is grounded.

[0036] Among them, the tenth capacitor C10 and the eleventh capacitor C11 serve as filter capacitors at the input end of the second voltage stabilizing circuit, and are used to filter out high-frequency noise and ripples in the input voltage of the second voltage stabilizing circuit, thereby improving the stability of the input voltage; the twelfth capacitor C12 and the thirteenth capacitor C13 serve as filter capacitors at the output end of the second voltage stabilizing circuit, and are used to further filter out noise and ripples in the output voltage of the second voltage stabilizing circuit, thereby ensuring the smoothness and stability of the output voltage.

[0037] In this embodiment, the combination of the first power supply module and the second power supply module provides a redundant power supply. Even if one power supply module fails, the system can continue to operate, thereby improving the stability and reliability of the system. At the same time, the second voltage stabilization circuit provides a stable and clean power supply to the controller U3 through the combination of the second step-down chip U5 and the filter capacitor, thereby reducing the impact of power supply fluctuations on system performance.

[0038] Please refer to Figure 4 In a further embodiment of the utility model, the motor driving module includes a motor driving chip U4, a fourth resistor R4, a fifth resistor R5, an eighth capacitor C8, a ninth capacitor C9 and a motor T2, the second pin of the motor driving chip U4 is connected to the fourteenth pin of the controller U3 through the fourth resistor R4, the third pin of the motor driving chip U4 is connected to the thirteenth pin of the controller U3 through the fifth resistor R5, the fifth pin of the motor driving chip U4 is respectively connected to one end of the ninth capacitor C9 and one end of the motor T2, the eighth pin of the motor driving chip U4 is respectively connected to the other end of the ninth capacitor C9 and the other end of the motor T2, the fourth pin of the motor driving chip U4 is respectively connected to the first power supply module, the second power supply module and one end of the eighth capacitor C8, the other end of the eighth capacitor C8 is grounded, and the sixth pin and the seventh pin of the motor driving chip U4 are both grounded.

[0039] Among them, the motor driver chip U4 is used to receive the control signal from the controller U3 and drive the motor T2 to perform corresponding actions; the fourth resistor R4 and the fifth resistor R5 are current limiting resistors to protect the output pin of the controller U3 from the influence of excessive current; the ninth capacitor C9 is the bypass capacitor of the motor T2, which absorbs the impact current generated when the motor starts and protects the motor driver chip U4; the eighth capacitor C8 provides a stable power supply voltage for the motor driver chip U4 and filters out noise and ripple in the power supply voltage; the motor T2 is used to perform mechanical actions such as unlocking or locking.

[0040] Please refer to Figure 5 In a further embodiment of the utility model, the voice module includes a voice chip U2, a first resistor R1, a fifth capacitor C5, a sixth capacitor C6 and a recorder T3. The recorder T3 can be a microphone, a microphone head or other sound collection equipment. The first pin of the voice chip U2 is respectively connected to the first power supply module, the second power supply module and one end of the fifth capacitor C5, the other end of the fifth capacitor C5 is grounded, the second pin of the voice chip U2 is connected to one end of the recorder T3, the third pin of the voice chip U2 is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to the other end of the recorder T3, and the fourth pin of the voice chip U2 is connected to the recorder The other end of the speaker T3 is connected, the fifth pin of the voice chip U2 is respectively connected to the ninth pin of the controller U3 and one end of the sixth capacitor C6, the other end of the sixth capacitor C6 is grounded, the eighth pin of the voice chip U2 is connected to the eleventh pin of the controller U3, the ninth pin of the voice chip U2 is connected to the sixteenth pin of the controller U3, and the tenth pin of the voice chip U2 is grounded; the voice module is used to collect the user's unlocking voice, the main control module is used to receive and compare whether the unlocking voice collected by the voice module is correct and send an unlocking instruction to the motor drive module when the unlocking voice is correct, and the motor drive module is used to complete the unlocking action according to the unlocking instruction of the main control module.

[0041] Among them, the voice chip U2 is responsible for the collection and processing of sound signals and the communication with the main control module. It receives the sound signal from the recorder T3, performs necessary preprocessing, and then sends the processed signal to the controller U3; the first resistor R1 is a bias resistor, which provides the necessary bias voltage for the recorder T3 to ensure its normal operation; the fifth capacitor C5 and the sixth capacitor C6 are filter capacitors, which filter out the noise and ripple on the power pin and signal pin of the voice chip U2 respectively, and improve the stability and accuracy of the signal; the recorder T3 is a sound collection device, such as a microphone or a microphone head, which is responsible for converting the sound of the surrounding environment into an electrical signal for the voice chip U2 to process.

[0042] In this embodiment, the voice module uses the voice chip U2 to perform voice recognition processing, which can accurately recognize the user's voice commands and improve the intelligence level of the system.

[0043] Among them, the voice chip U2 is the core component of the voice module, responsible for the collection, processing (such as amplification, filtering, analog-to-digital conversion, voice recognition, etc.) and transmission of sound signals. The first pin of the voice chip U2 is connected to the power supply module to receive a stable power supply; the second pin of the voice chip U2 is connected to one end of the recorder T3 to receive the sound signal; the third and fourth pins of the voice chip U2 are connected to the other end of the recorder T3 through the first resistor R1, which is used for bias voltage adjustment and signal feedback to ensure that the recorder T3 can work normally; the eighth and ninth pins of the voice chip U2: respectively connected to the eleventh and sixteenth pins of the controller U3, used to transmit control signals or status information. The recorder T3 is a sound collection device, which can be a microphone, a microphone head or other similar devices, responsible for converting the user's voice into an electrical signal and passing it to the voice chip U2 for processing. The fifth capacitor C5 and the sixth capacitor C6 are both used for filtering.

[0044] The utility model provides a voice-controlled invisible lock, the operating principle of which is:

[0045] When the lock needs to be unlocked, the user speaks the pre-recorded voice command in front of the lock. The recorder T3 in the voice module will collect the user's voice and generate a corresponding analog signal to send to the voice chip U2 in the voice module. After receiving the signal from the recorder T3, the voice chip U2 will convert the analog signal generated by the recorder T3 into a digital signal and transmit the digital signal to the controller U3 of the main control module. After receiving the signal, the controller U3 will compare the received digital signal with the previously recorded sound digital signal. If the comparison results are consistent, the motor will be driven by the motor driver chip U4 to complete the unlocking action.

[0046] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A voice-controlled invisible lock, characterized in that: It includes a main control module, a first power supply module, a motor drive module, a voice module and a second power supply module, the input end of the main control module is connected to the output ends of the motor drive module and the voice module respectively, the output end of the main control module is connected to the input end of the motor drive module, the main control module, the motor drive module and the voice module are respectively connected to the first power supply module and the second power supply module; the voice module is used to collect user voice information, and the main control module is used to transmit a control instruction to the motor drive module according to the user voice information collected by the voice module.

2. A voice-activated invisible lock according to claim 1, characterized in that: The main control module comprises a controller (U3), a first switch (S1), a second resistor (R2) and a reset circuit, wherein the tenth pin of the controller (U3) is connected to one end of the first switch (S1), the other end of the first switch (S1) is connected to one end of the second resistor (R2), the other end of the second resistor (R2) is grounded, and the seventh pin of the controller (U3) is grounded; the reset circuit comprises a third resistor (R3) and a seventh capacitor (C7), one end of the third resistor (R3) is connected to the ninth pin of the controller (U3), the other end of the third resistor (R3) is connected to the fourth pin of the controller (U3), one end of the seventh capacitor (C7) is connected to the fourth pin of the controller (U3), and the other end of the seventh capacitor (C7) is grounded.

3. A voice-activated invisible lock according to claim 2, characterized in that: The first power supply module comprises a power supply circuit and a first voltage stabilizing circuit; the power supply circuit comprises a built-in power supply (T4) and a first diode (D1), the first pin of the built-in power supply (T4) is connected to the positive electrode of the first diode (D1), the second pin of the built-in power supply (T4) is grounded, the cathode of the first diode (D1) is connected to the input end of the first voltage stabilizing circuit, and the output end of the first voltage stabilizing circuit is connected to the input end of the controller (U3).

4. A voice-activated invisible lock according to claim 3, characterized in that: The first voltage stabilizing circuit comprises a first buck chip (U1), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3) and a fourth capacitor (C4); a first pin of the first buck chip (U1) is respectively connected to the cathode of the first diode (D1), one end of the first capacitor (C1) and one end of the second capacitor (C2); a second pin of the first buck chip (U1) is grounded; a third pin of the first buck chip (U1) is respectively connected to a ninth pin of the controller (U3), one end of the third capacitor (C3) and one end of the fourth capacitor (C4); the other end of the first capacitor (C1) is grounded; the other end of the second capacitor (C2) is grounded; the other end of the third capacitor (C3) is grounded; and the other end of the fourth capacitor (C4) is grounded.

5. The voice-activated invisible lock according to claim 2, characterized in that: The second power supply module includes an external power supply circuit and a second voltage stabilizing circuit, the external power supply circuit includes a horizontal socket (T1) and a sixth resistor (R6), the ninth pin of the horizontal socket (T1) is connected to the input end of the second voltage stabilizing circuit, the output end of the second voltage stabilizing circuit is connected to the ninth pin of the controller (U3), the first pin of the horizontal socket (T1) is grounded, the fifth pin of the horizontal socket (T1) is connected to one end of the sixth resistor (R6), and the other end of the sixth resistor (R6) is grounded.

6. A voice-activated invisible lock according to claim 5, characterized in that: The second voltage stabilizing circuit comprises a second step-down chip (U5), a tenth capacitor (C10), an eleventh capacitor (C11), a twelfth capacitor (C12) and a thirteenth capacitor (C13); a first pin of the second step-down chip (U5) is respectively connected to a ninth pin of the horizontal mother socket (T1), one end of the tenth capacitor (C10) and one end of the eleventh capacitor (C11); a second pin of the second step-down chip (U5) is grounded; a third pin of the second step-down chip (U5) is respectively connected to a ninth pin of the controller (U3), one end of the twelfth capacitor (C12) and one end of the thirteenth capacitor (C13); the other end of the tenth capacitor (C10) is grounded, the other end of the eleventh capacitor (C11) is grounded, the other end of the twelfth capacitor (C12) is grounded, and the other end of the thirteenth capacitor (C13) is grounded.

7. The voice-activated invisible lock according to claim 2, characterized in that: The motor drive module comprises a motor drive chip (U4), a fourth resistor (R4), a fifth resistor (R5), an eighth capacitor (C8), a ninth capacitor (C9) and a motor (T2); the second pin of the motor drive chip (U4) is connected to the fourteenth pin of the controller (U3) through the fourth resistor (R4); the third pin of the motor drive chip (U4) is connected to the thirteenth pin of the controller (U3) through the fifth resistor (R5); the fifth pin of the motor drive chip (U4) is respectively connected to one end of the ninth capacitor (C9) and one end of the motor (T2); the eighth pin of the motor drive chip (U4) is respectively connected to the other end of the ninth capacitor (C9) and the other end of the motor (T2); the fourth pin of the motor drive chip (U4) is respectively connected to the first power supply module, the second power supply module and one end of the eighth capacitor (C8); the other end of the eighth capacitor (C8) is grounded; and the sixth pin and the seventh pin of the motor drive chip (U4) are both grounded.

8. The voice-activated invisible lock according to claim 2, characterized in that: The voice module comprises a voice chip (U2), a first resistor (R1), a fifth capacitor (C5), a sixth capacitor (C6) and a recorder (T3); a first pin of the voice chip (U2) is respectively connected to the first power supply module, the second power supply module and one end of the fifth capacitor (C5); the other end of the fifth capacitor (C5) is grounded; a second pin of the voice chip (U2) is connected to one end of the recorder (T3); a third pin of the voice chip (U2) is connected to one end of the first resistor (R1); the other end of the first resistor (R1) is connected to the other end of the recorder (T3); a fourth pin of the voice chip (U2) is connected to the other end of the recorder (T3); The fifth pin of the voice chip (U2) is respectively connected to the ninth pin of the controller (U3) and one end of the sixth capacitor (C6), the other end of the sixth capacitor (C6) is grounded, the eighth pin of the voice chip (U2) is connected to the eleventh pin of the controller (U3), the ninth pin of the voice chip (U2) is connected to the sixteenth pin of the controller (U3), and the tenth pin of the voice chip (U2) is grounded; the voice module is used to collect the user's unlocking voice, the main control module is used to receive and compare whether the unlocking voice collected by the voice module is correct and send an unlocking instruction to the motor drive module when the unlocking voice is correct, and the motor drive module is used to complete the unlocking action according to the unlocking instruction of the main control module.

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