Intelligent voice coded lock

Abstract

The utility model relates to an intelligent voice coded lock, which belongs to the technical field of electronic information and comprises a master control circuit, a matrix keyboard circuit and a voice circuit. The voice circuit comprises a voice chip and a voice controller, the voice controller is respectively connected with the voice chip and the main control circuit, and the matrix keyboard circuit is connected with the main control circuit; the matrix keyboard circuit converts a password input by a user into a password signal, the voice circuit collects and recognizes the voice of the user, performs voice comparison and then outputs an unlocking signal, and the main control circuit performs unlocking control when receiving the unlocking signal or the password signal. The voice unlocking function is added on the basis of key password unlocking, voice unlocking can be achieved when a user forgets a password, and the technical problems that an electronic password lock is single in password and a fixed password is prone to being forgotten are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic information, in particular to an intelligent voice password lock. Background Art

[0002] There are many types of lock products, which can be used in various occasions. General mechanical locks are low-cost, highly reliable, and can be used in various environments. However, because mechanical keys are easy to copy and have poor confidentiality, they are not suitable for places with high requirements for confidentiality and management functions.

[0003] With the development of electronic technology, electronic locks came into being. They have the advantages of automatic opening and closing and easy operation. There are many types of electronic locks, such as digital locks, fingerprint locks, magnetic card locks, IC locks, biological locks, etc., but the most widely used ones are push-button electronic password locks. Electronic password locks are products that control the operation of circuits or chips through password input, thereby controlling the opening and closing of mechanical switches to complete unlocking and locking tasks.

[0004] However, current electronic password locks have the disadvantages of single passwords and fixed passwords being easily forgotten. Utility Model Content

[0005] In view of this, it is necessary to provide an intelligent voice password lock to solve the technical problems that the existing electronic password locks have a single password and the fixed password is easily forgotten.

[0006] In order to solve the above problems, the utility model provides an intelligent voice password lock, including a main control circuit, a matrix keyboard circuit and a voice circuit;

[0007] The voice circuit includes a voice chip and a voice controller, the voice controller is connected to the voice chip and the main control circuit respectively, and the matrix keyboard circuit is connected to the main control circuit;

[0008] The matrix keyboard circuit converts the password input by the user into a password signal, the voice circuit collects and recognizes the user's voice and outputs an unlocking signal after voice comparison, and the main control circuit performs unlocking control when receiving the unlocking signal or the password signal.

[0009] In a possible implementation, the main control circuit includes a main controller, a power conversion circuit, an alarm circuit, an unlocking circuit and a power switch;

[0010] The power conversion circuit is respectively connected to the power switch, the main controller, the matrix keyboard circuit and the voice circuit; the power switch is respectively connected to the battery, the alarm circuit and the unlocking circuit; the main controller is respectively connected to the alarm circuit, the unlocking circuit, the matrix keyboard circuit and the voice circuit.

[0011] In a possible implementation, the power conversion circuit is composed of a voltage regulator of model ASM1117, a capacitor, a resistor, and a red light emitting diode.

[0012] In a possible implementation, the unlocking circuit includes a first transistor, a first resistor, a second resistor, a green light emitting diode, a first diode and a relay;

[0013] The emitter of the first transistor is connected to the power switch, the base of the first transistor is connected to the first end of the first resistor, the second end of the first resistor is connected to the main controller, the collector of the first transistor is connected to the cathode of the first diode and the first end of the relay, the second end of the relay is connected to the anode of the first diode and the ground end, the third end of the relay is connected to the ground end, the fourth end of the relay is left empty, the fifth end of the relay is connected to the cathode of the green light-emitting diode, the anode of the green light-emitting diode is connected to the first end of the second resistor, and the second end of the second resistor is connected to the power switch.

[0014] In a possible implementation, the matrix keyboard circuit includes sixteen keys and a capacitive inductive touch chip of model TTP229;

[0015] The sixteen buttons are connected to the capacitive inductive touch chip, and the capacitive inductive touch chip is connected to the main controller.

[0016] In a possible implementation, it also includes a fingerprint module circuit;

[0017] The fingerprint module circuit includes an AS608 module, which is connected to the main controller and is used to perform fingerprint comparison and output a fingerprint unlocking signal to the main controller when the fingerprint comparison is successful, so that the main controller performs unlocking control based on the fingerprint unlocking signal.

[0018] In a possible implementation, a remote communication circuit is also included;

[0019] The remote communication circuit includes a GSM / GPRS A9 module connected to the main controller, which is used to realize the remote communication between the main controller and the user terminal through the built-in short message sending and receiving function.

[0020] In a possible implementation, it also includes an NFC card sensing module circuit;

[0021] The NFC card sensing module circuit includes a radio frequency reader and an IC card, and the radio frequency reader is connected to the main controller;

[0022] The IC card generates an excitation power source based on the electromagnetic waves sent by the radio frequency reader / writer, and completes data transmission and reception between the IC card and the radio frequency reader / writer through the working voltage provided by the excitation power source, so that the radio frequency reader / writer outputs an NFC unlocking signal or an NFC alarm signal to the main controller.

[0023] In a possible implementation, the device further includes a display circuit composed of a liquid crystal display screen of model SSD1306;

[0024] The display circuit is connected to the main controller.

[0025] In a possible implementation, it also includes a storage circuit composed of a model AT24C02.

[0026] The beneficial effects of the utility model are as follows: the intelligent voice password lock provided by the utility model includes a main control circuit, a matrix keyboard circuit and a voice circuit, the voice circuit includes a voice chip and a voice controller, the password input by the user is converted into a password signal through the matrix keyboard circuit, the voice circuit collects and recognizes the user's voice and outputs an unlocking signal after voice comparison, and the main control circuit performs unlocking control when receiving the unlocking signal or password signal. The utility model adds a voice unlocking function on the basis of key password unlocking, and voice unlocking can be realized when the user forgets the password, solving the technical problem that the password of the electronic password lock is single and the fixed password is easy to be forgotten. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of an embodiment of an intelligent voice password lock provided by the utility model;

[0028] Figure 2 A schematic diagram of the structure of a matrix keyboard circuit chip in an embodiment of an intelligent voice password lock provided by the utility model;

[0029] Figure 3 A schematic diagram of the structure of the unlocking circuit in an embodiment of the intelligent voice password lock provided by the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the storage circuit in an embodiment of the intelligent voice password lock provided by the utility model. DETAILED DESCRIPTION

[0031] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] The utility model embodiment provides an intelligent voice password lock; Figure 1 The structure diagram of an embodiment of the intelligent voice password lock provided by the utility model is as follows: Figure 1 As shown, the intelligent voice password lock includes a main control circuit 10, a matrix keyboard circuit 20 and a voice circuit 30;

[0036] The voice circuit 30 includes a voice chip and a voice controller, the voice controller is connected to the voice chip and the main control circuit 10 respectively, and the matrix keyboard circuit 20 is connected to the main control circuit 10;

[0037] The matrix keyboard circuit 20 converts the password input by the user into a password signal, the voice circuit 30 collects and recognizes the user's voice and outputs an unlocking signal after voice comparison, and the main control circuit 10 performs unlocking control when receiving the unlocking signal or password signal.

[0038] It should be noted that, in the embodiment of the utility model, the voice chip used in the voice circuit 30 is LD3320, and the voice controller used is STC11L08XE single-chip microcomputer. The utility model integrates the LD3320 voice chip in the printed circuit board to improve the integration and facilitate the later shell design; the LD3320 voice chip supports parallel and serial interfaces, and is connected to the STC11L08XE single-chip microcomputer through 8 data lines, 4 control signals and an interrupt return signal, and the STC11L08XE single-chip microcomputer is connected to the main control circuit through the IO port; the LD3320 voice chip collects the user's voice or the surrounding sound (the user represents the unlocking personnel) through the built-in microphone amplifier, and performs pre-processing, noise reduction, filtering and other operations on the collected audio signal through the internal voice signal processor to improve the accuracy of voice recognition. After that, the LD3320 voice chip converts the audio signal into a digital signal and extracts its own voice features. The LD3320 voice chip uses a feature extraction algorithm of Mel frequency cepstrum coefficients to extract voice features, and a voice recognition module is provided inside the LD3320 voice chip, such as Chinese numbers, English numbers, Chinese pinyin, etc. The LD3320 voice chip matches the extracted voice features with the voice in the voice recognition module, and recognizes the meaning of the user's voice expression (i.e., the voice recognition result). After the LD3320 voice chip completes voice recognition, the voice recognition result will be transmitted to the STC11L08XE microcontroller, and the STC11L08XE microcontroller compares the voice recognition result with the unlocking voice keyword set by the user. If they are consistent, an unlocking signal is output to the main control circuit 10, and the main control circuit 10 performs unlocking control. If they are inconsistent, the unlocking fails.

[0039] It can be understood that in the embodiment of the utility model, the LD3320 voice chip realizes voice recognition by identifying specific frequency and time domain features in the voice signal. It uses endpoint detection technology, that is, the presence of the signal is detected at the beginning and end of the voice signal, and it is passed to the subsequent processing module for recognition. The LD3320 chip can perform multi-language recognition, including Chinese, English, Japanese, etc.

[0040] Compared with the prior art, the intelligent voice password lock provided by the utility model includes a main control circuit 10, a matrix keyboard circuit 20 and a voice circuit 30. The voice circuit 30 includes a voice chip and a voice controller. The password input by the user is converted into a password signal through the matrix keyboard circuit 20. The voice circuit 30 collects and recognizes the user's voice and outputs an unlocking signal after voice comparison. The main control circuit 10 performs unlocking control when receiving the unlocking signal or password signal. The utility model adds a voice unlocking function on the basis of key password unlocking. When the user forgets the password, voice unlocking can be realized, which solves the technical problem that the password of the electronic password lock is single and the fixed password is easy to be forgotten.

[0041] In some embodiments of the present utility model, the main control circuit 10 includes a main controller 110, a power conversion circuit 120, an alarm circuit 130, an unlocking circuit 140 and a power switch 150;

[0042] The power conversion circuit 120 is respectively connected to the power switch 150, the main controller 110, the matrix keyboard circuit 20 and the voice circuit 30; the power switch 150 is respectively connected to the battery, the alarm circuit 130 and the unlocking circuit 140; the main controller 110 is respectively connected to the alarm circuit 130, the unlocking circuit 140, the matrix keyboard circuit 20 and the voice circuit 30.

[0043] It should be noted that in the embodiment of the utility model, the main controller 110 adopts a single-chip microcomputer of model STM32F103RCT6, which has 8 clocks and can be used in combination according to different situations. It has relatively low cost and strong performance. There are many IO ports available for use and can be accurately controlled. The alarm circuit 130 adopts a combination of a transistor and a buzzer. The STM32F103RCT6 single-chip microcomputer outputs a high-level signal to turn on the transistor, and the buzzer is powered on to sound an alarm. The buzzer uses a 5V voltage; the power switch 150 is connected to a 5V battery, and can also be connected to an external power supply through a set TYPE-C interface. Since the chip of the relevant single-chip microcomputer of the utility model requires a 3.3V power supply, a power conversion circuit 120 is required to convert the 5V voltage into a 3.3V voltage.

[0044] In some embodiments of the present invention, the power conversion circuit 120 is composed of a voltage regulator of model ASM1117, a capacitor, a resistor, and a red light emitting diode.

[0045] Reference Figure 3 , Figure 3This is a structural schematic diagram of the unlocking circuit 140 in an embodiment of the intelligent voice password lock provided by the utility model. In a specific implementation, the power conversion circuit 120 includes four capacitors, 1 resistor, 1 red light-emitting diode and a voltage regulator of model ASM1117, which is mainly used to convert the 5V voltage input by the power switch 150 into a 3.3V voltage.

[0046] In some embodiments of the present invention, the unlocking circuit 140 includes a first transistor, a first resistor, a second resistor, a green light emitting diode, a first diode and a relay;

[0047] The emitter of the first transistor is connected to the power switch 150, the base of the first transistor is connected to the first end of the first resistor, the second end of the first resistor is connected to the main controller 110, the collector of the first transistor is connected to the cathode of the first diode and the first end of the relay, the second end of the relay is connected to the anode of the first diode and the ground terminal, the third end of the relay is connected to the ground terminal, the fourth end of the relay is left empty, the fifth end of the relay is connected to the cathode of the green light-emitting diode, the anode of the green light-emitting diode is connected to the first end of the second resistor, and the second end of the second resistor is connected to the power switch 150.

[0048] It should be noted that in the embodiment of the utility model, the unlocking circuit 140 controls the opening and closing of the door lock through a relay, and the relay is controlled by a first transistor. In a specific implementation, the main controller 110 will output a high-level signal to the base of the first transistor through the first resistor when performing unlocking control, so that the first transistor is turned on, and then the 5V voltage input by the switching power supply drives the relay to be attracted, thereby opening the door lock. After the relay is attracted, the green light-emitting diode is also turned on, emitting green light to prompt the user that the unlocking is successful.

[0049] In some embodiments of the present utility model, the matrix keyboard circuit 20 includes sixteen keys and a capacitive sensing touch chip of model TTP229;

[0050] The sixteen buttons are connected to a capacitive inductive touch chip, and the capacitive inductive touch chip is connected to the main controller 110 .

[0051] It should be noted that, in the embodiment of the utility model, the matrix keyboard circuit 20 includes 16 keys, and the 16 keys are arranged in 4 rows and 4 columns. Each key is a touch module, and each key is connected to the capacitive induction touch chip of TTP229. Figure 2 , Figure 2TP0-TP15 are keyboard signal access ports, and the SCL / SD 0 pins of the TTP229 capacitive inductive touch chip are respectively connected to the STM32F103RCT6 single-chip computer. When the key is touched, the TTP229 capacitive inductive touch chip outputs a hexadecimal signal to the main controller 110. The utility model simplifies the wiring method through the IIC communication mode of the TTP229 capacitive inductive touch chip. The matrix keyboard circuit 20 also includes multiple capacitors, C6 and C7 are filter capacitors, C1, C4, C5, C8, C9 and C11 are sensitivity adjustment capacitors, and the sensitivity of the touch key can be adjusted by adjusting the size of the capacitor.

[0052] It can be understood that in the embodiment of the utility model, the user can modify the initial password during actual use, and when the password is entered incorrectly three times, the main controller 110 controls the alarm circuit 130 to alarm, and the buzzer will sound for 5 seconds during the alarm. When the password is entered incorrectly 10 times, the main controller 110 controls the keyboard to lock for three minutes.

[0053] In some embodiments of the present utility model, a fingerprint module circuit 40 is also included;

[0054] The fingerprint module circuit 40 includes an AS608 module, which is connected to the main controller 110 and is used to perform fingerprint comparison and output a fingerprint unlocking signal to the main controller 110 when the fingerprint comparison is successful, so that the main controller 110 performs unlocking control based on the fingerprint unlocking signal.

[0055] It should be noted that, in the embodiment of the utility model, the AS608 module adopts an 8-pin control interface, the power supply voltage is 3.3V, and includes two communication buses: serial communication (TX, RX) and USB communication (D+, D-). In the specific implementation of the utility model, the AS608 module and the main controller 110 adopt serial communication. The main controller 110 sends and processes serial port data according to the communication protocol format specified by the AS608 module to realize the control of the AS608 module. The fingerprint information is entered by entering the image, generating features, quickly searching for images, and automatically registering templates. When the user performs fingerprint unlocking, the user's fingerprint is compared with the fingerprint library. If the comparison is successful, the AS608 module outputs a fingerprint unlocking signal. The main controller 110 outputs a high-level signal to the unlocking circuit 140 based on the fingerprint unlocking signal to open the door lock. To delete the entered fingerprint, it is necessary to input the unlocking password through the matrix keyboard circuit 20 to reset the fingerprint library.

[0056] In some embodiments of the present invention, a remote communication circuit 50 is also included;

[0057] The remote communication circuit 50 includes a GSM / GPRS A9 module connected to the main controller 110, and is used to realize remote communication between the main controller 110 and the user terminal through a built-in short message sending and receiving function.

[0058] It should be noted that in the embodiment of the utility model, the GSM / GPRS A9 module is a wireless communication module, which can cooperate with the main controller 110 to realize all the functions of a mobile phone, such as making calls, answering calls, text messages, MMS, etc. The GSM / GPRS A9 module includes functions of reading, writing, deleting text messages and sending text messages. The utility model realizes remote communication between the main controller 110 and the user terminal through the text message function of the GSM / GPRSA9 module, thereby realizing remote unlocking and remote alarm. For example, by sending a text message to the user to remind the user that someone is trying to open the door, and when the user is not at home, the remote communication circuit 50 can also provide a text message function to send a temporary password to a friend, and the temporary password can only be entered once.

[0059] In some embodiments of the present invention, an NFC (Near Field Communication) card sensing module circuit 60 is also included;

[0060] The NFC card sensing module circuit 60 includes a radio frequency reader and an IC (Integrated Circuit) card. The radio frequency reader is connected to the main controller 110.

[0061] The IC card generates an excitation power source based on the electromagnetic waves sent by the RF reader / writer, and completes data transmission and reception between the IC card and the RF reader / writer through the working voltage provided by the excitation power source, so that the RF reader / writer outputs an NFC unlocking signal or an NFC alarm signal to the main controller 110.

[0062] It should be noted that in the embodiment of the utility model, RC522 is used as the NFC card sensing module, which is a contactless card reader / writer chip. The bottom layer adopts SPI analog timing and has two parts, a radio frequency reader / writer and an IC card. The radio frequency reader / writer sends a set of electromagnetic waves of fixed frequency to the IC card. There is an LC series resonant circuit in the IC card, and its frequency is the same as the frequency emitted by the reader / writer. In this way, under the excitation of the electromagnetic wave, the LC resonant circuit resonates, so that there is an electric charge in the capacitor. At the other end of this charge, there is a unidirectional conductive electronic pump, which sends the charge in the capacitor to another capacitor for storage. When the accumulated charge reaches 2V, this capacitor can be used as an excitation power supply to provide a working voltage, transmit the data in the IC card or receive the data from the reader / writer, and realize the NFC unlocking function.

[0063] In the specific implementation, the IC card and the radio frequency reader / writer complete the reading and writing operations through radio waves. The communication frequency between the two is 13.56MHZ. The IC card itself is a passive card. When the radio frequency reader / writer performs reading and writing operations on the IC card, the signal sent by the radio frequency reader / writer is composed of two parts. One part is the power signal. After the signal is received by the IC card, it generates an instantaneous energy with the LC series resonant circuit of the IC card itself to supply the IC card to work. The other part is the instruction and data signal, which instructs the IC card to complete the reading, modification, storage, etc. of the data, and returns the signal to the radio frequency reader / writer to complete the reading and writing operations.

[0064] In some embodiments of the present invention, a display circuit 70 composed of a liquid crystal display screen of model SSD1306 is also included;

[0065] The display circuit 70 is connected to the main controller 110 .

[0066] It should be noted that, in the embodiment of the utility model, the SSD1306 liquid crystal display screen is a single-chip CMOS OLED / PLED driver, an organic polymer light emitting controller, a diode dot matrix graphic display system, and is composed of 128 segments and 64 common parts.

[0067] In some embodiments of the present invention, a storage circuit 80 composed of a model AT24C02 is also included.

[0068] It should be noted that, in the embodiment of the utility model, AT24C02 is a read-only memory with a serial electrically erasable function. The chip has 256*8bit bytes inside and also has a buffer to support IIC communication. It is mainly used to store passwords when the power is off. The specific structure of the storage circuit 80 can be referred to Figure 4 ,Depend on Figure 4 It can be seen that AT24C02 is powered by 3.3V voltage, C31 plays a filtering role, R3 and R4 are current limiters to prevent excessive current from entering the chip, the A0, A1, and A2 pins of AT24C02 are device address selection pins, the SDA pin is the serial data interface, SCL is the serial clock interface, WP is write protection, VCC is the power interface, and GND is the ground terminal.

[0069] The main controller 110 adopted by the utility model is an STM32F103RCT6 single-chip microcomputer. By collecting the required fingerprints in advance and saving them in the memory, the input fingerprint to be tested and the stored fingerprint are compared during use to verify the fingerprint information, realize the access control function, and have a GSM / GPRS remote communication function. The GSM / GPRS module is an integrated wireless terminal module with a short message sending and receiving function. The main controller 110 sends data and instructions to the GSM / GPRS module through the serial port, thereby realizing wireless communication. In addition, a traditional digital password unlocking method is provided through a matrix keyboard circuit 20, and an NFC card induction unlocking function is also designed. When using, the IC card is placed close to the NFC to realize the access control function. A human-computer interaction interface is added through the SSD1306 liquid crystal display screen, and all information can be displayed through the display screen. It has the advantages of high cost performance, small size, convenience, easy operation, high safety, etc. After testing, the intelligent voice door lock can correctly and quickly realize the fingerprint function, voice unlocking, display function, GSM / GPRS remote communication function, button and NFC card induction unlocking function.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent voice password lock, characterized in that: Including main control circuit, matrix keyboard circuit and voice circuit; The voice circuit includes a voice chip and a voice controller, the voice controller is connected to the voice chip and the main control circuit respectively, and the matrix keyboard circuit is connected to the main control circuit; The matrix keyboard circuit converts the password input by the user into a password signal, the voice circuit collects and recognizes the user's voice and outputs an unlocking signal after voice comparison, and the main control circuit performs unlocking control when receiving the unlocking signal or the password signal.

2. The intelligent voice password lock according to claim 1, characterized in that: The main control circuit includes a main controller, a power conversion circuit, an alarm circuit, an unlocking circuit and a power switch; The power conversion circuit is respectively connected to the power switch, the main controller, the matrix keyboard circuit and the voice circuit; the power switch is respectively connected to the battery, the alarm circuit and the unlocking circuit; the main controller is respectively connected to the alarm circuit, the unlocking circuit, the matrix keyboard circuit and the voice circuit.

3. The intelligent voice password lock according to claim 2, characterized in that: The power conversion circuit is composed of a voltage stabilizer of model ASM1117, a capacitor, a resistor and a red light emitting diode.

4. The intelligent voice password lock according to claim 3, characterized in that: The unlocking circuit comprises a first triode, a first resistor, a second resistor, a green light emitting diode, a first diode and a relay; The emitter of the first transistor is connected to the power switch, the base of the first transistor is connected to the first end of the first resistor, the second end of the first resistor is connected to the main controller, the collector of the first transistor is connected to the cathode of the first diode and the first end of the relay, the second end of the relay is connected to the anode of the first diode and the ground end, the third end of the relay is connected to the ground end, the fourth end of the relay is left empty, the fifth end of the relay is connected to the cathode of the green light-emitting diode, the anode of the green light-emitting diode is connected to the first end of the second resistor, and the second end of the second resistor is connected to the power switch.

5. The intelligent voice password lock according to claim 4, characterized in that: The matrix keyboard circuit includes sixteen keys and a capacitive inductive touch chip of model TTP229; The sixteen buttons are connected to the capacitive inductive touch chip, and the capacitive inductive touch chip is connected to the main controller.

6. The intelligent voice password lock according to claim 5, characterized in that: Also includes fingerprint module circuit; The fingerprint module circuit includes an AS608 module, which is connected to the main controller and is used to perform fingerprint comparison and output a fingerprint unlocking signal to the main controller when the fingerprint comparison is successful, so that the main controller performs unlocking control based on the fingerprint unlocking signal.

7. The intelligent voice password lock according to claim 6, characterized in that: Also includes telecommunication circuits; The remote communication circuit includes a GSM / GPRS A9 module connected to the main controller, which is used to realize the remote communication between the main controller and the user terminal through the built-in short message sending and receiving function.

8. The intelligent voice password lock according to claim 7, characterized in that: It also includes an NFC card sensing module circuit; The NFC card sensing module circuit includes a radio frequency reader and an IC card, and the radio frequency reader is connected to the main controller; The IC card generates an excitation power source based on the electromagnetic waves sent by the radio frequency reader / writer, and completes data transmission and reception between the IC card and the radio frequency reader / writer through the working voltage provided by the excitation power source, so that the radio frequency reader / writer outputs an NFC unlocking signal or an NFC alarm signal to the main controller.

9. The intelligent voice password lock according to claim 8, characterized in that: Also includes a display circuit consisting of a liquid crystal display screen model SSD1306; The display circuit is connected to the main controller.

10. The intelligent voice password lock according to claim 9, characterized in that: It also includes a storage circuit composed of model AT24C02.

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