CN212061268U - Circuit board assembly, face recognition module and intelligent door lock - Google Patents

Abstract

The utility model relates to a circuit board subassembly, face identification module and intelligent lock. The circuit board assembly comprises a circuit board, and further comprises a main control chip, a face recognition chip and a numeric keyboard, wherein the main control chip, the face recognition chip and the numeric keyboard are arranged on the circuit board, the main control chip is respectively connected with the face recognition chip and the numeric keyboard, the main control chip is used for controlling a door lock, and the face recognition chip is used for face recognition.

Description

Circuit board assembly, face recognition module and intelligent door lock

Technical Field

The utility model relates to a lock technical field especially relates to a circuit board subassembly, face identification module and intelligent lock.

Background

At present, the face recognition technology is widely applied to various application scenes, and an intelligent door lock is one of the application scenes. The face unlocking can realize the complete contactless unlocking experience for the user. The structure of the circuit board assembly in the intelligent door lock directly influences the design of the intelligent door lock. How to provide a circuit board assembly to meet the requirements of application scenarios such as an intelligent door lock and the like is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model provides a circuit board assembly, face identification module and intelligent lock technical scheme.

According to an aspect of the present disclosure, a circuit board assembly is provided, which includes a circuit board, and further includes a main control chip, a face recognition chip and a numeric keyboard, which are disposed on the circuit board, wherein the main control chip is respectively connected with the face recognition chip and the numeric keyboard, the main control chip is used for controlling a door lock, and the face recognition chip is used for face recognition.

The face recognition chip and the main control chip are integrated on the same PCBA, so that the technical threshold can be reduced, and the requirement on the development capability is reduced; the numeric keyboard, the main control chip and the face recognition chip are integrated on the same PCBA, so that the numeric keyboard and the main control chip do not need to be connected through a connector, the numeric keyboard and the main control chip can be connected through wiring inside the PCBA, and the complexity of connection between the numeric keyboard and the main control chip can be reduced.

In a possible implementation manner, the system further comprises an expansion interface arranged on the circuit board, and the expansion interface is connected with the main control chip.

In the implementation mode, the expansion interface is reserved, so that the customization and expansion of functions can be conveniently carried out by a user.

In a possible implementation manner, the mobile phone further comprises a connector arranged on the circuit board, wherein the connector is connected with the face recognition chip and used for connecting the camera module.

In the implementation mode, the connector used for connecting the camera module is arranged in the circuit board assembly, so that the camera module can be connected through the connector in the assembly of the follow-up intelligent door lock, and the assembly of the follow-up intelligent door lock can be facilitated.

In a possible implementation manner, the device further comprises a light supplement lamp interface arranged on the circuit board, wherein the light supplement lamp interface is connected with the face recognition chip and used for being connected with a light supplement lamp module.

In this implementation, through set up the light filling lamp interface that is used for connecting the light filling lamp module in the circuit board assembly, can conveniently connect the light filling lamp module from this to make face identification chip still can normally work under no light environment or complicated illumination environment.

In a possible implementation manner, the expansion interface includes a distance sensor interface, and the distance sensor interface is connected to the main control chip and is used for connecting a distance sensor.

In the implementation mode, the main control chip can wake up the face recognition chip when the distance sensor detects that a person approaches, and can control the face recognition chip to be in a dormant state when the distance sensor does not detect that the person approaches, so that the power consumption of the face recognition chip can be reduced.

According to an aspect of the present disclosure, a face recognition module is provided, including the circuit board assembly, still include with the camera module that face recognition chip is connected.

The circuit board assembly in the face recognition module integrates a main control chip, a face recognition chip and a digital keyboard, namely, the main control chip, the face recognition chip and the digital keyboard are integrated on the same PCBA, so that the problem that the PCBA number in the face recognition module is too large can be solved, the space inside the face recognition module can be saved, the hardware cost is reduced, and the assembly difficulty of the face recognition module is reduced.

In a possible implementation manner, the face recognition module comprises a front end and a rear end, the camera module is arranged in the front end, the circuit board assembly is arranged in the rear end, and the camera module is connected with the face recognition chip through a flat cable.

This implementation is through with the camera module with circuit board components separately sets up in front end and rear end, makes face identification module thinner narrower from this, changes in the integration in products such as intelligent lock that require much higher to industrial design.

In a possible implementation manner, the front end further comprises a light supplement lamp module, and the light supplement lamp module is connected with the face recognition chip through the flat cable.

In this implementation, through adopting the light filling lamp module, make face identification module still can normally work under no light environment or complicated illumination environment from this.

In a possible implementation manner, the flat cable includes a first flat cable and a second flat cable, the power supply line, the signal line and the control line of the camera module are integrated in the first flat cable, and the power supply line of the light supplement lamp module is arranged in the second flat cable.

In this implementation, the power supply line through with the light filling lamp module independently comes out, can make the whole of the change of the power supply line of light filling lamp module and light filling lamp module not influence face identification module from this.

According to an aspect of the present disclosure, an intelligent door lock is provided, which includes the face recognition module.

In the embodiment of the disclosure, the face recognition chip and the main control chip are integrated on the same PCBA, so that the technical threshold can be reduced, and the requirement on the development capability is reduced; the numeric keyboard, the main control chip and the face recognition chip are integrated on the same PCBA, so that the numeric keyboard and the main control chip do not need to be connected through a connector, the numeric keyboard and the main control chip can be connected through wiring inside the PCBA, and the complexity of connection between the numeric keyboard and the main control chip can be reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

Fig. 1 shows a schematic diagram of a circuit board assembly provided by an embodiment of the present disclosure.

Fig. 2 is a schematic diagram illustrating a face recognition module according to an embodiment of the present disclosure.

Fig. 3 shows a schematic diagram of a front end and a back end in a face recognition module provided in an embodiment of the present disclosure.

Fig. 4 shows a schematic diagram of an intelligent door lock provided by an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.

The Circuit Board Assembly provided by the embodiments of the present disclosure may be referred to as a PCBA (Printed Circuit Board Assembly). Fig. 1 shows a schematic diagram of a circuit board assembly provided by an embodiment of the present disclosure. As shown in fig. 1, the circuit board assembly includes a circuit board 100, and further includes a main control chip 200, a face recognition chip 300 and a numeric keypad 400, which are disposed on the circuit board 100, wherein the main control chip 200 is connected to the face recognition chip 300 and the numeric keypad 400, the main control chip 200 is used for controlling a door lock, and the face recognition chip 300 is used for face recognition.

In the embodiment of the present disclosure, the main control chip 200 may be used to control the door lock to be opened or closed. For example, the main control chip 200 may be an MCU (micro controller Unit) chip such as PSoC 63. The face recognition chip 300 may be any chip with a face recognition function. For example, the face recognition chip 300 may employ a chip such as RV 1108.

Because the technical docking of the face recognition chip is complicated and the technical threshold is high, the face recognition chip 300 and the main control chip 200 are integrated on the same PCBA, so that the technical threshold can be reduced, and the requirement on the development capability is reduced. The numeric keyboard 400, the main control chip 200 and the face recognition chip 300 are integrated on the same PCBA, so that the numeric keyboard 400 and the main control chip 200 do not need to be connected through a connector, the numeric keyboard 400 and the main control chip 200 can be connected through wiring inside the PCBA, and the complexity of connection between the numeric keyboard 400 and the main control chip 200 can be reduced.

The circuit board assembly that this disclosed embodiment provided has integrateed main control chip 200, face identification chip 300 and numeric keyboard 400, promptly, integrates main control chip 200, face identification chip 300 and numeric keyboard 400 on same PCBA, can solve the too much problem of PCBA quantity in the intelligent lock from this to can save the inside space of intelligent lock, reduce the hardware cost, reduce the assembly degree of difficulty of intelligent lock. Because the circuit board assembly that this disclosed embodiment provided can reduce the assembly degree of difficulty of intelligent lock, consequently can shorten the research and development cycle of new intelligent lock product to effectively reduce research and development cost. In addition, through reducing the quantity of PCBA, can reduce the complicated wiring between the different PCBA to assembly cost when reducing intelligent lock production.

In one possible implementation, the numeric keypad 400 may include 12 keys, the numbers 0-9, and the symbols # and x, respectively. Of course, those skilled in the art can flexibly select the number and type of the keys of the numeric keypad 400 according to the requirements of the actual application scenario.

In one possible implementation, the numeric keypad 400 may include indicator lights corresponding to the respective keys. For example, if the numeric keypad 400 includes 12 keys, the numeric keypad 400 may include 12-way indicator lamps corresponding to the 12 keys one to one.

In a possible implementation manner, the circuit board assembly further includes an expansion interface disposed on the circuit board 100, and the expansion interface is connected to the main control chip 200.

In this implementation, the expansion interface may be configured to connect with at least one of a fingerprint module, a distance sensor, an indicator light, a microphone, a speaker, an RGB (Red, Green, Blue) camera, a Wi-Fi module, a display screen, and the like. This implementation does not limit the devices to which the expansion interface is connected. Wherein the distance sensor may include at least one of a pyroelectric infrared sensor, an infrared ranging sensor, an ultrasonic distance sensor, and the like.

In the implementation mode, the expansion interface is reserved, so that the customization and expansion of functions can be conveniently carried out by a user.

In a possible implementation manner, the circuit board assembly further includes a connector disposed on the circuit board 100, and the connector is connected to the face recognition chip 300 for connecting a camera module. In the implementation mode, the connector used for connecting the camera module is arranged in the circuit board assembly, so that the camera module can be connected through the connector in the assembly of the follow-up intelligent door lock, and the assembly of the follow-up intelligent door lock can be facilitated.

In a possible implementation manner, the circuit board assembly further includes a light supplement lamp interface disposed on the circuit board 100, and the light supplement lamp interface is connected to the face recognition chip 300 and used for connecting the light supplement lamp module. In this implementation manner, a light supplement lamp interface for connecting the light supplement lamp module is arranged in the circuit board assembly, so that the light supplement lamp module can be conveniently connected, and the face recognition chip 300 can still normally work in a non-light environment or a complex illumination environment.

In a possible implementation manner, the expansion interface includes a distance sensor interface, and the distance sensor interface is connected to the main control chip 200 and is used for connecting a distance sensor. In this implementation manner, the main control chip 200 may wake up the face recognition chip 300 when the proximity sensor detects that a person is approaching, and may control the face recognition chip 300 to be in a sleep state when the proximity sensor does not detect that a person is approaching, thereby reducing power consumption of the face recognition chip 300.

In a possible implementation manner, the extension interface includes a fingerprint module interface, and the fingerprint module interface is connected to the main control chip 200 for connecting the fingerprint module. For example, the fingerprint module interface may be a UART (Universal Asynchronous Receiver/Transmitter) interface.

In one possible implementation, the main control chip 200 includes a bluetooth module. With the implementation manner, the user terminal (such as a mobile phone of a user) can control the door lock to be opened and/or closed through Bluetooth.

In a possible implementation manner, the circuit board assembly further includes a standby power interface disposed on the circuit board 100, and the standby power interface is respectively connected to the main control chip 200, the face recognition chip 300, and the numeric keyboard 400, and is configured to connect to a standby power. In this implementation manner, a standby power interface for connecting a standby power is reserved on the circuit board 100, so that after a main power source is powered off, the main control chip 200, the face recognition chip 300 and the numeric keyboard 400 can be powered by the standby power.

In a possible implementation manner, the circuit board assembly further includes a tamper-proof switch disposed on the circuit board 100, and the tamper-proof switch is connected to the main control chip 200. The circuit board assembly provided according to the implementation mode can be applied to the intelligent door lock with higher requirement on safety.

In a possible implementation manner, the circuit board assembly further includes a download port disposed on the circuit board 100, and as an example of the implementation manner, the download port may be a USB (Universal Serial Bus) download port, for example, a Micro USB download port.

In a possible implementation manner, the circuit board assembly further includes a sub board interface disposed on the circuit board 100, and the sub board interface is used for connecting a sub board.

In a possible implementation manner, the circuit board assembly further includes a main motor interface disposed on the circuit board 100, and the main motor interface is connected to the main control chip 200 and is used for connecting a main motor.

In a possible implementation manner, the circuit board assembly further includes a standby motor interface disposed on the circuit board 100, and the standby motor interface is connected to the main control chip 200 and is used for connecting a standby motor.

Because the occupied space of the circuit board assembly that this disclosed embodiment provided is less, consequently, adopt the circuit board assembly that this disclosed embodiment provided to design the outward appearance of intelligent lock product more nimble.

Fig. 2 is a schematic diagram illustrating a face recognition module according to an embodiment of the present disclosure. As shown in fig. 2, the face recognition module includes the circuit board assembly, and further includes a camera module 500 connected to the face recognition chip 300.

In one possible implementation, the camera module 500 may include two cameras, that is, the camera module 500 may be a dual-camera module, so as to realize 3D (3Dimensions, three-dimensional) face recognition.

In one possible implementation manner, the camera of the camera module 500 may be an infrared camera (IRCamera), for example, both cameras of the camera module 500 are infrared cameras. Through adopting infrared camera, make the face identification module can deal with complicated illumination environment.

In one possible implementation, the distance between the two cameras of the camera module 500 is fixed. As an example of this implementation, the minimum distance between the optical axes of the two cameras of the camera module 500 may be 17mm, and the embodiment of the present disclosure does not limit the maximum distance between the optical axes of the two cameras of the camera module 500, and a person skilled in the art may design the distance according to an actual product structure.

In one possible implementation, the camera module 500 is a common-substrate camera module 500. This implementation mode is through placing two cameras on same base plate, and the relative position between two cameras is fixed, can guarantee the precision from this.

In another possible implementation manner, the camera module 500 is a common-cradle camera module 500.

In a possible implementation manner, a memory is disposed on the first substrate of the camera module 500, and the memory is connected to the face recognition chip 300. In this implementation, the memory may be configured to store calibration information of the camera module 500. As an example of this implementation, the Memory may be an EEPROM (Electrically Erasable Programmable Read Only Memory). Of course, the memory may be other types of memory, and those skilled in the art may select the memory according to the requirements of the actual application scenario. As an example of this implementation, the memory may be connected to the face recognition chip 300 through an I2C bus.

In a possible implementation manner, the face recognition module includes a front end and a rear end, the camera module 500 is disposed in the front end, the circuit board assembly is disposed in the rear end, and the camera module is connected to the face recognition chip 300 through a flat cable. Fig. 3 shows a schematic diagram of a front end and a back end in a face recognition module provided in an embodiment of the present disclosure. As shown in fig. 3, the face recognition module comprises a front end 10 and a rear end 20, and the front end 10 and the rear end 20 can be connected by a flat cable 30. Because the thickness and the width of intelligence lock have the restriction, consequently, be unsuitable for installing face identification module thicker or wider. This disclosed embodiment through with the camera module with circuit board components part sets up in front end 10 and rear end 20, makes face identification module thinner narrower from this, promptly, the thickness and the width of the face identification module that this disclosed embodiment provided are all less, and it is easier to integrate in products such as intelligent lock that require height to industrial design.

In a possible implementation manner, the front end further includes a light supplement lamp module, and the light supplement lamp module is connected to the face recognition chip 300 through the flat cable. The light supplement lamp module can be connected with the face recognition chip 300 through a light supplement lamp interface and comprises a light supplement lamp. In this implementation, through adopting the light filling lamp module, make face identification module still can normally work under no light environment or complicated illumination environment from this.

As an example of the implementation manner, the Light supplement lamp of the Light supplement lamp module may be an LED (Light Emitting Diode) lamp. For example, the fill Light may be an IR LED (Infrared Light Emitting Diode).

As an example of this implementation, the light supplement lamp module includes an infrared floodlight. For example, the infrared floodlight may be an active infrared floodlight. Through adopting infrared floodlight, make face identification module still can realize face identification under complex illumination environment such as corridor, night from this.

As an example of this implementation, the light supplement lamp module is disposed between two cameras of the camera module 500. Through setting up the light filling lamp module between two cameras of camera module 500, illumination intensity when can making two cameras gather the image is close.

In a possible implementation manner, the first substrate of the camera module 500 is independent of the second substrate of the light supplement lamp module. In this implementation, camera module 500 and light filling lamp module can independently dismouting to can conveniently change camera module 500 or light filling lamp module alone.

In a possible implementation, the winding displacement includes camera module 500's power supply line the power supply line of light filling lamp module, signal line and control line, camera module 500's power supply line with camera module 500 connects to through setting up connector on the circuit board with face identification chip 300 connects, the power supply line of light filling lamp module with the light filling lamp module is connected, and is in through setting up light filling lamp interface on the circuit board with face identification chip 300 connects, the signal line with camera module 500 connects, and passes through the connector with face identification chip 300 connects, the control line with camera module 500 connects, and passes through the connector with face identification chip 300 connects. Based on the implementation, the face recognition chip 300 can obtain the signal of the camera module 500, for example, the face recognition chip 300 can obtain the image collected by the camera module 500; the face recognition chip 300 can control the camera module 500, for example, the face recognition chip 300 can control the camera module 500 to collect images.

In a possible implementation manner, the flat cable includes a first flat cable and a second flat cable, the power supply line, the signal line and the control line of the camera module 500 are integrated in the first flat cable, and the power supply line of the light supplement lamp module is disposed in the second flat cable. In this implementation, the power supply line through with the light filling lamp module independently comes out, can make the whole of the change of the power supply line of light filling lamp module and light filling lamp module not influence face identification module from this.

In another possible implementation manner, the power supply line of the camera module 500, the power supply line of the light supplement lamp module, the signal line and the control line are integrated in the same flat cable.

In a possible implementation manner, the signal line is further connected with the light supplement lamp module, and the control line is further connected with the light supplement lamp module. Based on this implementation, the face recognition chip 300 can obtain the signal of the light filling lamp module (for example, whether to open the light filling lamp), and the face recognition chip 300 can control the light filling lamp module (for example, control the light filling lamp to open or close).

In one possible implementation, the front end has a hole structure for fixing. For example, hole structures for fixing may be reserved at the left and right ends of the front end, and the hole structures may be screw holes, for example. The barrel structure may also be secured to the front end by an aperture structure.

In a possible implementation manner, the shape of the rear end may be a square, a rectangle, a circle, an irregular figure, or the like, which is not limited herein.

In one possible implementation, the rear end has a hole structure for fixing. For example, hole structures for fixing may be reserved at the upper left end, the upper right end, the lower left end, and the lower right end of the rear end. For example, the hole structure may be a screw hole.

In a possible implementation manner, a socket may be disposed on the first substrate of the camera module 500, and an interface of the second substrate of the light supplement lamp module may be fastened to the socket of the first substrate.

In a possible implementation manner, a silica gel gasket is arranged between the first substrate and the second substrate. In this implementation, the silicone gasket may be used to support the second substrate.

In one possible implementation, the second substrate is coated with a thermally conductive silicone grease. In this implementation, after the first shell and the second shell of the housing are joined, the heat conductive silicone grease coated on the second substrate is tightly attached to the first shell, thereby playing a role of heat dissipation.

The embodiment of the present disclosure further provides an intelligent door lock, and the intelligent door lock includes the face recognition module.

In a possible implementation manner, the intelligent door lock further comprises an external device connected with the main control chip through an expansion interface. Fig. 4 shows a schematic diagram of an intelligent door lock provided by an embodiment of the present disclosure. As shown in fig. 4, the intelligent door lock includes a circuit board assembly, a camera module 500 and an external device 700, the circuit board assembly includes a circuit board 100, and a main control chip 200, a face recognition chip 300, a numeric keypad 400 and an expansion interface 600 which are arranged on the circuit board 100, the main control chip is respectively connected with the face recognition chip 300, the numeric keypad 400 and the expansion interface 600, and the expansion interface 600 is connected with the external device 700. For example, the external device 700 may include at least one of a fingerprint module 710, an indicator light 720, a microphone, a speaker 730, and the like. For another example, the external device 700 may further include at least one of a distance sensor, an RGB camera, a Wi-Fi module, a display screen, and the like.

The intelligent lock that this disclosed embodiment provided can be applied to in the intelligent door.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. The circuit board assembly is characterized by comprising a circuit board, and further comprising a main control chip, a face recognition chip and a numeric keyboard, wherein the main control chip, the face recognition chip and the numeric keyboard are arranged on the circuit board, the main control chip is respectively connected with the face recognition chip and the numeric keyboard, the main control chip is used for controlling a door lock, and the face recognition chip is used for face recognition.

2. The circuit board assembly of claim 1, further comprising an expansion interface disposed on the circuit board, the expansion interface being connected with the main control chip.

3. The circuit board assembly of claim 1, further comprising a connector disposed on the circuit board, the connector being connected to the face recognition chip for connecting to a camera module.

4. The circuit board assembly of claim 3, further comprising a fill-in light interface disposed on the circuit board, wherein the fill-in light interface is connected to the face recognition chip and is configured to connect to a fill-in light module.

5. The circuit board assembly of claim 2, wherein the expansion interface comprises a distance sensor interface, and the distance sensor interface is connected with the main control chip for connecting a distance sensor.

6. A face recognition module, characterized by comprising the circuit board assembly of any one of claims 1 to 5, and further comprising a camera module connected with the face recognition chip.

7. The face recognition module of claim 6, wherein the face recognition module comprises a front end and a back end, the camera module is disposed in the front end, the circuit board assembly is disposed in the back end, and the camera module is connected to the face recognition chip through a flat cable.

8. The face recognition module set of claim 7, wherein the front end further comprises a light supplement lamp module, and the light supplement lamp module is connected with the face recognition chip through the flat cable.

9. The module of claim 8, wherein the flat cables comprise a first flat cable and a second flat cable, power supply lines, signal lines and control lines of the camera module are integrated in the first flat cable, and power supply lines of the fill-in light module are disposed in the second flat cable.

10. An intelligent door lock, characterized by comprising the face recognition module of any one of claims 6 to 9.

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