Access control system, identity recognition method and device, storage medium and electronic equipment

Abstract

The invention discloses an access control system, an identity recognition method and device, a storage medium and electronic equipment. Relates to the technical field of biological recognition, and comprises a bracelet used for sending fingerprint features of a target object to a back-end database for identity recognition through a local area network of a target area, and setting a state code as a target state code under the condition that a signal indicating that identity recognition passes is received; and the access control device is used for verifying the state code in the bracelet and is started when the state code in the bracelet is the target state code. According to the method and the device, the problem of relatively low access control passing efficiency caused by the fact that a user needs to carry out biological recognition at an access control in related technologies is solved.

Description

Technical Field

[0001] The present application relates to the field of biometric identification technology, and more specifically, to an access control system, an identity identification method and device, a storage medium, and an electronic device. Background Art

[0002] Access control systems usually have the function of identifying and controlling the entry or exit of people or objects in a specific area, usually through biometrics or electronic identification. Fingerprint recognition has been widely used due to its good recognition accuracy, stability, convenience and low cost. However, many traditional access control systems rely on the method of punching in at the access control point. Although it can effectively control the entry and exit of people, during peak hours, employees often need to stay and wait at the access control point, resulting in congestion and inefficiency, especially when multiple people enter and exit at the same time, which increases the management burden and safety risks.

[0003] With regard to the problem in related technologies that users are required to undergo biometric identification at access control points, resulting in relatively low access control efficiency, no effective solution has yet been proposed. Summary of the invention

[0004] The main purpose of the present application is to provide an access control system and an identity recognition method and device, a storage medium and an electronic device to solve the problem in the related art that users are required to perform biometric recognition at the access control point, resulting in low access control efficiency.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a door access control system is provided. The system comprises: a wristband, which is used to send the fingerprint characteristics of the target object to the back-end database for identity recognition through the local area network of the target area, and when receiving a signal indicating that the identity recognition is passed, the status code is set to the target status code; and a door access control device, which is used to verify the status code in the wristband and open when the status code in the wristband is the target status code.

[0006] Furthermore, the bracelet also includes: a fingerprint sensor for collecting the fingerprint image of the target object; a control chip for sending fingerprint feature information corresponding to the fingerprint image of the target object to a back-end database for identity recognition, and setting the status code to a target status code when receiving a signal indicating that the identity recognition is successful.

[0007] Furthermore, the bracelet also includes: a wireless module for connecting to a local area network in a target area so as to send the fingerprint features of the target object to a back-end database for identity recognition through a control chip; and a display module for displaying the target status code.

[0008] In order to achieve the above-mentioned purpose, according to another aspect of the present application, an identity authentication method is provided. The method comprises: the wristband in the access control system sends the fingerprint characteristics of the target object to the back-end database through the local area network of the target area for identity recognition, and when receiving a signal indicating that the identity recognition is passed, the status code is set to the target status code; the access control device in the access control system verifies the status code in the wristband and turns on when the status code in the wristband is the target status code.

[0009] Furthermore, before the wristband in the access control system sends the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area, the method also includes: the wristband detects whether it is within the coverage of the local area network of the target area; if it is within the coverage of the local area network of the target area, the wristband is connected to the local area network of the target area, wherein after the wristband is successfully connected to the local area network of the target area, the wristband sends the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area.

[0010] Furthermore, the wristband in the access control system sends the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area, including: the fingerprint sensor in the wristband collects the fingerprint image of the target object; the control chip in the wristband performs feature recognition on the fingerprint image to obtain the fingerprint feature; the control chip sends the fingerprint feature to the back-end database through the local area network for identity recognition.

[0011] Furthermore, the fingerprint sensor in the bracelet collects the fingerprint image of the target object, including: when a contact signal of the target object is detected, the fingerprint sensor illuminates the fingerprint of the target object to form a reflection on the fingerprint surface of the target object; based on the reflection of the fingerprint surface of the target object, the fingerprint sensor captures the fingerprint image.

[0012] Furthermore, the control chip in the bracelet performs feature recognition on the fingerprint image, and obtaining the fingerprint feature includes: performing noise filtering on the fingerprint image to obtain a first fingerprint image; calculating the blurriness of each pixel in the first fingerprint image to obtain the blurriness of each pixel; filtering the first fingerprint image according to the blurriness of each pixel to obtain a second fingerprint image; and obtaining the fingerprint feature according to the second fingerprint image.

[0013] Furthermore, the blurriness of each pixel in the first fingerprint image is calculated to obtain the blurriness of each pixel, including: for a target pixel, obtaining the grayscale values ​​of multiple pixels within a target range centered on the target pixel; and calculating based on the grayscale values ​​to obtain the blurriness of each pixel.

[0014] In order to achieve the above-mentioned purpose, according to another aspect of the present application, an identity authentication device is provided. The device comprises: a sending unit, which is used for the wristband in the access control system to send the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition, and when receiving a signal indicating that the identity recognition is passed, the status code is set to the target status code; a verification unit, which is used for the access control device in the access control system to verify the status code in the wristband, and is turned on when the status code in the wristband is the target status code.

[0015] Furthermore, the device also includes: a detection unit, used for the wristband to detect whether it is within the coverage of the local area network of the target area; a connection unit, used for connecting the wristband to the local area network of the target area if it is within the coverage of the local area network of the target area, wherein after the wristband is successfully connected to the local area network of the target area, the wristband sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition.

[0016] Furthermore, the sending unit also includes: a collection subunit, which is used for the fingerprint sensor in the bracelet to collect the fingerprint image of the target object; an identification subunit, which is used for the control chip in the bracelet to perform feature recognition on the fingerprint image to obtain the fingerprint feature; and a sending subunit, in which the control chip sends the fingerprint feature to the back-end database through the local area network for identity recognition.

[0017] Furthermore, the acquisition subunit includes: an illumination module, which is used for the fingerprint sensor to illuminate the fingerprint of the target object when a contact signal of the target object is detected, so as to form a reflection on the fingerprint surface of the target object; and a capture module, which is used for the fingerprint sensor to capture the fingerprint image based on the reflection of the fingerprint surface of the target object.

[0018] Furthermore, the recognition subunit includes: a first filtering module, used to filter the noise of the fingerprint image to obtain a first fingerprint image; a calculation module, used to calculate the blurriness of each pixel in the first fingerprint image to obtain the blurriness of each pixel; a second filtering module, used to filter the first fingerprint image according to the blurriness of each pixel to obtain a second fingerprint image; a processing module, used to obtain the fingerprint feature according to the second fingerprint image.

[0019] Furthermore, the calculation module includes: an acquisition submodule, which is used to obtain the grayscale values ​​of multiple pixels within a target range centered on the target pixel point; and a calculation submodule, which is used to perform calculations based on the grayscale values ​​to obtain the blurriness of each pixel point.

[0020] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute any one of the above-mentioned identity authentication methods.

[0021] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising a memory storing an executable program; and a processor for running the program, wherein the program executes any one of the above-mentioned identity authentication methods when running.

[0022] According to another aspect of an embodiment of the present invention, a computer program product is further provided. The computer program product includes a stored computer program. When the computer program is executed by a processor, any one of the above-mentioned identity authentication methods is implemented.

[0023] In an embodiment of the present application, a wristband in an access control system is used to send the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition, and when a signal of identity recognition success is received, the status code is set to the target status code; the access control device in the access control system verifies the status code in the wristband and is turned on when the status code in the wristband is the target status code, thereby solving the problem of low access control efficiency caused by the need for users to perform biometric recognition at the access control point.

[0024] In this solution, the fingerprint features of the target object are collected through a wristband, and then the fingerprint features are sent to the back-end database through the local area network in the target area for identity recognition. After the identity authentication is passed, the status code in the wristband is updated to the preset target status code. When the target object passes through the access control device, the access control device can directly verify the status code in the wristband, and open the access control when it is determined that the status code in the wristband is consistent with the target status code. Through this solution, identity authentication and access control verification are executed separately. The access control device only needs to identify the switch status of the wristband to complete the quick passage, thereby achieving the effect of improving the efficiency of access control. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1is a schematic diagram of an access control system provided according to an embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of a wristband provided according to an embodiment of the present application. Figure 1 ;

[0028] Figure 3 This is a schematic diagram of a wristband provided according to an embodiment of the present application. Figure 2 ;

[0029] Figure 4 This is a schematic diagram of a wristband provided according to an embodiment of the present application. Figure 3 ;

[0030] Figure 5 This is the process of the identity authentication method provided in the embodiment of the present application Figure 1 ;

[0031] Figure 6 This is the process of the identity authentication method provided in the embodiment of the present application Figure 2 ;

[0032] Figure 7 This is the process of the identity authentication method provided in the embodiment of the present application Figure 3 ;

[0033] Figure 8 is a schematic diagram of an identity authentication device provided according to an embodiment of the present application;

[0034] Fig. 9 It is a structural block diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] It should be noted that the collected information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for display, data for analysis, etc.) involved in this application are information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of relevant data are in compliance with relevant laws, regulations and standards, necessary confidentiality measures are taken, and public order and good customs are not violated, and corresponding operation entrances are provided for users to choose to authorize or refuse. For example, an interface is set up between this system and relevant users or institutions to provide users with corresponding operation entrances for users to choose to agree or refuse the results of automated decision-making; if the user chooses to refuse, the expert decision-making process will be entered.

[0038] Example 1

[0039] According to an embodiment of the present application, a door access control system is provided. Figure 1 Schematic diagram of the access control system according to the first embodiment of the present application. Figure 1 As shown, the access control system includes: a wristband 10 and an access control device 20.

[0040] The wristband 10 is used to send the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area, and set the status code to the target status code when receiving a signal indicating that the identity recognition is successful;

[0041] The access control device 20 is used to verify the status code in the wristband and to open when the status code in the wristband is the target status code.

[0042] Alternatively, if Figure 1The access control system provided in the embodiment of the present application is composed of a wristband 10 and an access control device 20. The wristband 10 is used to collect fingerprint features of the user (i.e., the above-mentioned target object), and when the wristband 10 is in the local area network of the target area, the fingerprint features of the user are sent to the back-end database through the local area network for identity recognition. It should be noted that the target area can be the user's office area.

[0043] After the back-end database receives the user's fingerprint feature, it will match it with the stored fingerprint feature to realize the user's identity authentication. After the user's identity authentication is passed, the back-end database will send a corresponding signal to the bracelet 10. When the bracelet 10 receives the signal that the identity recognition is passed, it sets the status code to the target status code.

[0044] When the user needs to pass through the access control device 20, the access control device 20 verifies the status code in the wristband and opens when the status code in the wristband is the target status code.

[0045] In summary, the fingerprint features of the target object are collected through the wristband, and then the fingerprint features are sent to the back-end database through the local area network in the target area for identity recognition. After the identity authentication is passed, the status code in the wristband is updated to the preset target status code. When the target object passes through the access control device, the access control device can directly verify the status code in the wristband, and open the access control when it is determined that the status code in the wristband is consistent with the target status code. This solution realizes the separation of identity authentication and access control verification. The access control device only needs to identify the switch status of the wristband to complete the quick passage, thereby achieving the effect of improving the efficiency of access control.

[0046] Optionally, in the access control system provided in the embodiment of the present application, the bracelet 10 also includes: a fingerprint sensor for collecting a fingerprint image of the target object; a control chip for sending fingerprint feature information corresponding to the fingerprint image of the target object to a back-end database for identity recognition, and setting the status code to a target status code when receiving a signal indicating that the identity recognition is successful.

[0047] In an optional embodiment, the schematic diagram of the wristband 10 is as follows Figure 2 As shown, a fingerprint sensor and a control chip are provided in the wristband 10. It should be noted that the control chip is responsible for the overall control work, the control chip is connected to the fingerprint sensor, exchanges information with the fingerprint sensor, controls their work, starts and shuts down, etc.

[0048] For example, the fingerprint sensor receives the user's fingerprint image, and then sends the fingerprint feature information corresponding to the fingerprint image to the back-end database for identity recognition through the control chip, and when a signal indicating that the identity recognition is successful is received, the status code is set to the target status code.

[0049] In an optional embodiment, the fingerprint sensor may be an optical fingerprint recognition sensor. When a finger touches the sensor, the fingerprint is illuminated by a light source, and the information of the fingerprint collected by the reflected light is converted into a digital signal to identify the corresponding fingerprint image.

[0050] For example, the control chip is provided with a logic switch, which is controlled by whether the fingerprint identity authentication is successful or not. When the employee successfully passes the fingerprint identity authentication, the logic switch is set to 1 (passable), otherwise the switch is 0 (not passable).

[0051] The fingerprint sensor and control chip can accurately collect the user's fingerprint features and realize accurate identity recognition of the user.

[0052] Optionally, in the access control system provided in the embodiment of the present application, the bracelet 10 also includes: a wireless module for connecting to the local area network of the target area to send the fingerprint features of the target object to the back-end database for identity recognition through the control chip; and a display module for displaying the target status code.

[0053] In an optional embodiment, the schematic diagram of the wristband 10 is as follows Figure 2 As shown, the wristband 10 is also provided with a wireless module and a display module. The wireless module is connected to the local area network of the target area, and then the fingerprint characteristics of the target object are sent to the back-end database for identity recognition through the control chip, and the display module is used to display the target status code.

[0054] For example, the control chip controls the fingerprint sensor to collect the user's fingerprint image, and then sends the fingerprint features corresponding to the fingerprint image to the back-end database through the wireless module for identity recognition. When a signal of identity recognition success is received, the status code is set to the target status code, and the target status code is displayed on the display module to facilitate subsequent passage through the access control device 20.

[0055] The wireless module can realize the rapid transmission of the fingerprint features corresponding to the fingerprint image, and the display module can make it more convenient for users to view the current identity recognition status.

[0056] In an optional embodiment, the schematic diagram of the wristband 10 can be as follows Figure 2 As shown, it includes a control chip, a fingerprint sensor, a power module, an input and output unit, a WLAN module, a display module, a memory, a clock unit, and a board.

[0057] A board is a circuit board, similar to a PC motherboard or a wristband motherboard, used to fix other units and provide circuit connection functions for other units. The control chip, fingerprint sensor, power module, input and output unit, WLAN module, display module, memory, and clock unit are fixed on the board.

[0058] The control chip is responsible for the overall control work, and is connected to the fingerprint sensor, power module, input and output unit, WLAN module, display module, memory, and clock unit to exchange information with them, control their work, start and shut down, etc. The power module is used to provide working voltage, the input and output unit and WLAN module are used for data transmission, the memory is used to store the collected fingerprint image and other data, and the clock unit is used to increase the clock signal.

[0059] In an optional embodiment, the schematic diagram of the wristband 10 can also be as follows Figure 3 and Figure 4 As shown, Figure 3 This is the overall schematic diagram of the bracelet. Figure 4 It is a schematic cross-sectional view of a wristband, wherein the wristband 10 includes a ring body, a display screen, buttons, a fingerprint recognition area and a body.

[0060] The ring body is a ring-shaped structure device, which is convenient for people to wear it on their hands. It can be a fixed ring body, that is, it cannot be disassembled. This kind of ring body needs to be properly designed according to the size of the hand so that it can just allow the palm to pass through when it is contracted. Optionally, the ring body can also have a detachable structure, and the detachable two ends are connected by a snap or other connection method to form a ring. Optionally, the ring body 10 can be closed or not completely closed, but the entire ring body can be fixed on the wrist. The ring body can be a belt-like structure or a chain-like structure. Optionally, the detachable structure is telescopic and can adjust the size of the circle of the ring body.

[0061] The display screen is a flexible and bendable display screen used as a display device on watches, bracelets and other small portable devices to display data information. It can be a black and white display screen or a color display screen. The button is a physical squeeze-type switch button that can be squeezed to represent the input data operation. It can include multiple buttons, such as "OK", "Cancel", etc., or it can be a single button. When the button is physically squeezed, an electrical signal indicating the squeeze is generated and sent to the control chip of the watch body. The fingerprint recognition area is used to collect user fingerprint information and process fingerprint image features. The watch body is the main electronic device of the wearable device, including the clock, power supply, and fingerprint sensor are all installed in the watch body device.

[0062] In the access control system provided in the embodiment of the present application, through the wristband in the access control system, the fingerprint features of the target object are sent to the back-end database through the local area network of the target area for identity recognition, and when a signal of identity recognition success is received, the status code is set to the target status code; the access control device in the access control system verifies the status code in the wristband and is turned on when the status code in the wristband is the target status code, thereby solving the problem of low access control efficiency caused by the need for users to perform biometric recognition at the access control point.

[0063] In this solution, the fingerprint features of the target object are collected through a wristband, and then the fingerprint features are sent to the back-end database through the local area network in the target area for identity recognition. After the identity authentication is passed, the status code in the wristband is updated to the preset target status code. When the target object passes through the access control device, the access control device can directly verify the status code in the wristband, and open the access control when it is determined that the status code in the wristband is consistent with the target status code. Through this solution, identity authentication and access control verification are executed separately. The access control device only needs to identify the switch status of the wristband to complete the quick passage, thereby achieving the effect of improving the efficiency of access control.

[0064] Example 2

[0065] According to an embodiment of the present application, an embodiment of an identity authentication method is also provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0066] This application provides Figure 5 The authentication method indicated. Figure 5 This is the process of the identity authentication method according to the second embodiment of the present application. Figure 1 The method comprises:

[0067] Step S501, the wristband in the access control system sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition, and sets the status code to the target status code when receiving a signal indicating that the identity recognition is successful.

[0068] Optionally, when a user (i.e., the target object mentioned above) needs to enter an office area through identity authentication or clock in through identity authentication, the user's fingerprint feature can be collected through a wristband in the access control system. Then, after entering the local area network of the target area (e.g., the office area), the fingerprint feature is sent to the back-end database for identity recognition using the local area network of the target area.

[0069] After the back-end database receives the user's fingerprint features, it will match them with the stored fingerprint features to achieve user identity authentication. After the user's identity authentication is passed, the back-end database will send a corresponding signal to the bracelet. When the bracelet receives the signal that the identity recognition is passed, it sets the status code to the target status code.

[0070] In an optional embodiment, when the identity recognition is passed, the status code is 1, and when the identity recognition is not passed, the status code is 0.

[0071] Step S502, the access control device in the access control system verifies the status code in the wristband, and turns on when the status code in the wristband is the target status code.

[0072] Optionally, when the user needs to pass through the access control device in the access control system, the access control device can directly verify whether the status code in the wristband is the target status code. When the status code in the wristband is the target status code, the access control device is turned on.

[0073] To summarize, when the wristband enters the local area network of the target area, it connects to the local area network and sends the detected fingerprint features to the back-end database for identity recognition. The identity recognition sends an identity recognition pass signal to the wristband through the back-end database. The wristband receives the identity recognition pass signal and triggers the display of the target status code, which is verified at the access control device. The access control device is turned on when it detects the target status code, so that the target object completes identity recognition before passing through the access control, and can quickly pass through the access control.

[0074] Optionally, before the wristband in the access control system sends the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area, the method also includes: the wristband detects whether it is within the coverage of the local area network of the target area; if it is within the coverage of the local area network of the target area, the wristband is connected to the local area network of the target area, wherein after the wristband is successfully connected to the local area network of the target area, the wristband sends the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area.

[0075] In an optional embodiment, before sending the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area, it also includes: detecting the location of the wristband, that is, determining whether the wristband is within the coverage of the local area network of the target area. When it is determined that the wristband is within the coverage of the local area network of the target area, the wristband automatically connects to the local area network of the target area. If the connection is successful, the wristband uses the local area network of the target area to send the fingerprint features of the target object to the back-end database for identity recognition.

[0076] The LAN can improve the security of data transmission, and at the same time determine the problems users are facing, ensuring that users are on the job.

[0077] Optionally, the wristband in the access control system sends the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area, including: the fingerprint sensor in the wristband collects the fingerprint image of the target object; the control chip in the wristband performs feature recognition on the fingerprint image to obtain the fingerprint features; the control chip sends the fingerprint features to the back-end database through the local area network for identity recognition.

[0078] In an optional embodiment, the wristband sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition, including: collecting the fingerprint image of the target object through the fingerprint sensor in the wristband. It should be noted that the fingerprint sensor can be an optical fingerprint recognition sensor, which uses a light source to illuminate the fingerprint, and converts the information of the fingerprint collected by the reflected light into a digital signal to identify the fingerprint. It mainly consists of three parts: a light source, a camera, and a processor. When a finger touches the sensor, the light source illuminates the fingerprint to form a contrast on the fingerprint surface; the camera captures the fingerprint image.

[0079] Then, the collected fingerprint image is sent to the control chip in the bracelet, and the fingerprint image is identified by the control chip. For example, the control chip is provided with a deep learning algorithm, and the feature point information (for example, edge, inflection point, ring, etc.) in the fingerprint is obtained by the deep learning algorithm, and the feature point is used as the above-mentioned fingerprint feature.

[0080] Finally, the control chip sends the fingerprint features to the back-end database through the local area network for identity recognition.

[0081] The fingerprint sensor and control chip are used to extract the characteristic information of the fingerprint, avoiding the need for feature extraction using a back-end database and improving the efficiency of subsequent fingerprint recognition.

[0082] Optionally, the fingerprint sensor in the bracelet collects the fingerprint image of the target object, including: when a contact signal of the target object is detected, the fingerprint sensor irradiates the fingerprint of the target object to form a reflection on the fingerprint surface of the target object; based on the reflection of the fingerprint surface of the target object, the fingerprint sensor captures the fingerprint image.

[0083] In an optional embodiment, the fingerprint sensor in the wristband can be an optical fingerprint recognition sensor, which uses a light source to illuminate the fingerprint, and converts the information of the fingerprint collected by the reflected light into a digital signal to identify the fingerprint. It mainly consists of three parts: a light source, a camera, and a processor. When the user touches the fingerprint recognition area of ​​the wristband, the light source in the fingerprint sensor illuminates the user's fingerprint to form a reflection on the fingerprint surface, and then the fingerprint image is captured by the camera in the fingerprint sensor, and finally the processor is used to transmit it to the control chip for feature extraction.

[0084] The optical fingerprint recognition sensor can accurately capture the user's fingerprint image, and then more accurately identify the user.

[0085] Optionally, the control chip in the bracelet performs feature recognition on the fingerprint image to obtain the fingerprint feature, including: performing noise filtering on the fingerprint image to obtain a first fingerprint image; calculating the blurriness of each pixel in the first fingerprint image to obtain the blurriness of each pixel; filtering the first fingerprint image according to the blurriness of each pixel to obtain a second fingerprint image; and obtaining the fingerprint feature based on the second fingerprint image.

[0086] In an optional embodiment, the following steps can be used to extract fingerprint features from a fingerprint image: first, the fingerprint image is preprocessed, for example, the fingerprint image is converted into a fingerprint image of black and white pixels using a binary method, and then, an adaptive binary method is used to eliminate part of the edge noise to improve the fingerprint recognition effect, that is, the converted fingerprint image is subjected to noise filtering processing to obtain the above-mentioned first fingerprint image.

[0087] Then, the blurriness of each pixel in the first fingerprint image is calculated. It should be noted that the blurriness is a value between 0 and 1, indicating the clarity of the pixel. The higher the blurriness, the clearer the feature point; the lower the blurriness, the blurrier the feature point.

[0088] After obtaining the blurriness of each pixel, the first fingerprint image is filtered twice according to the blurriness of each pixel to obtain a second fingerprint image, and finally the fingerprint feature is obtained according to the second fingerprint image. For example, the pixels in the second fingerprint feature are spliced ​​to obtain the above fingerprint feature.

[0089] In an optional embodiment, obtaining the fingerprint feature based on the second fingerprint image includes: calculating the direction information of the surrounding pixels for each pixel point of the second fingerprint image to form a direction field pointing to the feature point, combining the direction fields of all feature points together to form a descriptor of the fingerprint, and finally determining the descriptor as the above-mentioned fingerprint feature.

[0090] In an optional embodiment, after obtaining the first fingerprint image, feature points of the first fingerprint image may be selected. These feature points may include shape information such as edges, inflection points, and rings. For each feature point, the blurriness of the surrounding pixels is calculated, and a minimum blurriness threshold is set. Only when the blurriness of the feature point is greater than or equal to the threshold, it is considered to be a valid feature point. According to the minimum blurriness threshold, invalid feature points are filtered out, and the remaining feature points are used as the final feature points to obtain the above-mentioned feature information.

[0091] By filtering the fingerprint image and calculating the fuzziness, the user's fingerprint features can be captured more accurately, improving the accuracy of subsequent fingerprint matching.

[0092] Optionally, the blurriness of each pixel in the first fingerprint image is calculated to obtain the blurriness of each pixel, including: for a target pixel, obtaining grayscale values ​​of multiple pixels within a target range centered on the target pixel; and calculating based on the grayscale values ​​to obtain the blurriness of each pixel.

[0093] In an optional embodiment, the following steps may be used to calculate the blurriness of each pixel: for any pixel in the first fingerprint image, the grayscale values ​​of multiple pixels within a target range with the pixel as the center point are obtained, and the blurriness of each pixel is calculated based on the grayscale values. It should be noted that the target range may be a circle center range.

[0094] In an optional embodiment, the blurriness of the pixel at the center point may be taken by calculating the local variance of the grayscale values ​​of multiple pixel points.

[0095] Calculating the blurriness of each pixel by the grayscale value of the surrounding pixels helps to identify and extract key feature information and improve the accuracy of subsequent fingerprint recognition.

[0096] In an optional embodiment, the following may be used: Figure 6 The flowchart shown realizes the user's identity recognition, which specifically includes: the user wears the bracelet and enters the LAN signal coverage area, the bracelet automatically connects to the LAN signal, the user touches the bracelet fingerprint sensor, and the optical fingerprint sensor captures the fingerprint image information through the camera. The control chip performs image preprocessing on the captured fingerprint image information, and uses the binary method to convert the pixel image into black and white pixels to reduce the complexity of the image, and then analyzes the fingerprint information, extracts the fingerprint feature points, such as edges, inflection points, rings and other shape information, and sends the obtained fingerprint features to the back-end database.

[0097] The extracted fingerprint features are compared with the database fingerprint information through the back-end database to confirm the user's identity. If it is confirmed to be passed, the corresponding signal is sent to the bracelet. After the bracelet receives the signal, the corresponding status code is displayed in the display module, indicating that the identity authentication has passed.

[0098] In an optional embodiment, it is also possible to use Figure 7The flowchart shown realizes fast access control, and the steps are as follows: turn on the power switch of the wristband; connect the wristband to the local area network and check whether it is connected. If not, check whether it has entered the signal coverage area; after the local area network is successfully connected, upload the fingerprint for identity authentication; verify the processed fingerprint information with the existing fingerprint in the database. If it fails, re-upload the fingerprint or verify the network status; if the fingerprint identity authentication is successful, set the wristband status to the passable status; complete the clocking action at the access control location; the access control verifies the wristband status. If the wristband status is not passable, the fingerprint must be re-verified or manually verified, otherwise the access control access action is completed.

[0099] In an optional embodiment, the status code in the wristband can be controlled remotely, and when a non-employee visitor visits, the switch status can be modified to 1 (passable) through the access control system to grant the visitor access rights. Alternatively, when the fingerprint sensor fails, the switch status can be modified through manual recognition to grant the employee access rights.

[0100] In an embodiment of the present application, the fingerprint features of the target object are sent to the back-end database through the local area network of the target area by the wristband in the access control system for identity recognition, and when a signal of identity recognition success is received, the status code is set to the target status code. The access control device in the access control system verifies the status code in the wristband and is turned on when the status code in the wristband is the target status code, thereby solving the problem of low access control efficiency caused by the need for users to perform biometric recognition at the access control point.

[0101] In this solution, the fingerprint features of the target object are collected through a wristband, and then the fingerprint features are sent to the back-end database through the local area network in the target area for identity recognition. After the identity authentication is passed, the status code in the wristband is updated to the preset target status code. When the target object passes through the access control device, the access control device can directly verify the status code in the wristband, and open the access control when it is determined that the status code in the wristband is consistent with the target status code. Through this solution, identity authentication and access control verification are executed separately. The access control device only needs to identify the switch status of the wristband to complete the quick passage, thereby achieving the effect of improving the efficiency of access control.

[0102] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0103] Example 3

[0104] The embodiment of the present application also provides an identity recognition device. It should be noted that the identity recognition device of the embodiment of the present application can be used to execute the identity recognition method provided by the embodiment of the present application. The identity recognition device provided by the embodiment of the present application is introduced below.

[0105] According to an embodiment of the present application, a device for implementing the above-mentioned identity recognition method is also provided, such as Figure 8 As shown, the device includes: a sending unit 801 and a verification unit 802.

[0106] The sending unit 801 is used for the wristband in the access control system to send the fingerprint characteristics of the target object to the back-end database through the local area network of the target area for identity recognition, and when receiving a signal that the identity recognition is passed, the status code is set to the target status code;

[0107] The verification unit 802 is used for the access control device in the access control system to verify the status code in the wristband and is turned on when the status code in the wristband is the target status code.

[0108] In an embodiment of the present application, the fingerprint features of the target object are sent to the back-end database through the local area network of the target area by the sending unit 801, and when a signal of successful identity recognition is received, the status code is set to the target status code; the access control device in the access control system of the verification unit 802 verifies the status code in the wristband and is turned on when the status code in the wristband is the target status code, thereby solving the problem in the related art that the user is required to perform biometric recognition at the access control point, resulting in relatively low access control efficiency.

[0109] In this solution, the fingerprint features of the target object are collected through a wristband, and then the fingerprint features are sent to the back-end database through the local area network in the target area for identity recognition. After the identity authentication is passed, the status code in the wristband is updated to the preset target status code. When the target object passes through the access control device, the access control device can directly verify the status code in the wristband, and open the access control when it is determined that the status code in the wristband is consistent with the target status code. Through this solution, identity authentication and access control verification are executed separately. The access control device only needs to identify the switch status of the wristband to complete the quick passage, thereby achieving the effect of improving the efficiency of access control.

[0110] Optionally, in the identity recognition device provided in the embodiment of the present application, the device also includes: a detection unit, used for the wristband to detect whether it is within the coverage of the local area network of the target area; a connection unit, used for connecting the wristband to the local area network of the target area if it is within the coverage of the local area network of the target area, wherein after the wristband is successfully connected to the local area network of the target area, the wristband sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition.

[0111] Optionally, in the identity recognition device provided in the embodiment of the present application, the sending unit 801 includes: a collection subunit, which is used for the fingerprint sensor in the bracelet to collect the fingerprint image of the target object; an identification subunit, which is used for the control chip in the bracelet to perform feature recognition on the fingerprint image to obtain fingerprint features; and a sending subunit, in which the control chip sends the fingerprint features to the back-end database through the local area network for identity recognition.

[0112] Optionally, in the identity recognition device provided in the embodiment of the present application, the collection subunit includes: an illumination module, which is used for the fingerprint sensor to illuminate the fingerprint of the target object when a contact signal of the target object is detected to form a reflection on the fingerprint surface of the target object; and a capture module, which is used for the fingerprint sensor to capture a fingerprint image based on the reflection of the fingerprint surface of the target object.

[0113] Optionally, in the identity recognition device provided in the embodiment of the present application, the recognition subunit includes: a first filtering module, used to filter the noise of the fingerprint image to obtain a first fingerprint image; a calculation module, used to calculate the blurriness of each pixel in the first fingerprint image to obtain the blurriness of each pixel; a second filtering module, used to filter the first fingerprint image according to the blurriness of each pixel to obtain a second fingerprint image; a processing module, used to obtain fingerprint features based on the second fingerprint image.

[0114] Optionally, in the identity recognition device provided in the embodiment of the present application, the calculation module includes: an acquisition submodule, which is used to obtain the grayscale values ​​of multiple pixels within a target range centered on the target pixel point; and a calculation submodule, which is used to perform calculations based on the grayscale values ​​to obtain the blurriness of each pixel point.

[0115] It should be noted here that the above-mentioned sending unit 801 and verification unit 802 correspond to steps S501 to S502 in the second embodiment, and the examples and application scenarios implemented by the two units and the corresponding steps are the same, but are not limited to the contents disclosed in the above-mentioned first embodiment.

[0116] Example 4

[0117] An embodiment of the present application may provide an electronic device, Fig. 9 is a structural block diagram of an electronic device according to an embodiment of the present application. Fig. 9 As shown, the electronic device may include: one or more ( Fig. 9 (only one is shown) processor 902, memory 904, storage controller, and peripheral interface, wherein the peripheral interface is connected to the radio frequency module, audio module and display.

[0118] Among them, the memory can be used to store software programs and modules, such as program instructions / modules corresponding to the methods and devices in the embodiments of the present application, and the processor executes various functional applications and data processing by running the software programs and modules stored in the memory, that is, realizing the above-mentioned method. The memory may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include a memory remotely arranged relative to the processor, and these remote memories may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0119] The processor can call the information and application stored in the memory through the transmission device to perform the following steps: the bracelet in the access control system sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition, and when receiving a signal that the identity recognition is passed, sets the status code to the target status code; the access control device in the access control system verifies the status code in the bracelet and turns on when the status code in the bracelet is the target status code.

[0120] The processor can call the information and application programs stored in the memory through the transmission device to perform the following steps: the wristband detects whether it is within the coverage of the local area network of the target area; if it is within the coverage of the local area network of the target area, the wristband is connected to the local area network of the target area, wherein after the wristband is successfully connected to the local area network of the target area, the wristband sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition.

[0121] The processor can call the information and application programs stored in the memory through the transmission device to perform the following steps: the fingerprint sensor in the bracelet collects the fingerprint image of the target object; the control chip in the bracelet performs feature recognition on the fingerprint image to obtain the fingerprint feature; the control chip sends the fingerprint feature to the back-end database through the local area network for identity recognition.

[0122] The processor can call the information and application stored in the memory through the transmission device to perform the following steps: when a contact signal of the target object is detected, the fingerprint sensor illuminates the fingerprint of the target object to form a reflection on the fingerprint surface of the target object; based on the reflection of the fingerprint surface of the target object, the fingerprint sensor captures the fingerprint image.

[0123] The processor can call the information and application stored in the memory through the transmission device to perform the following steps: filter the noise of the fingerprint image to obtain a first fingerprint image; calculate the blurriness of each pixel in the first fingerprint image to obtain the blurriness of each pixel; filter the first fingerprint image according to the blurriness of each pixel to obtain a second fingerprint image; and obtain fingerprint features from the second fingerprint image.

[0124] The processor can call the information and application stored in the memory through the transmission device to perform the following steps: for the target pixel point, obtain the grayscale values ​​of multiple pixels within the target range centered on the target pixel point; calculate based on the grayscale value to obtain the blur of each pixel point.

[0125] In an embodiment of the present application, a wristband in the access control system is used to send the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition, and when a signal of identity recognition success is received, the status code is set to the target status code; the access control device in the access control system verifies the status code in the wristband and is turned on when the status code in the wristband is the target status code, thereby achieving the purpose of quickly verifying the target object through the access control, and quickly verifying the identity of the target object through the access control system and the identity verification method, thereby solving the problem in the related technology that the user needs to perform biometric recognition at the access control point, resulting in relatively low access control efficiency.

[0126] It can be understood by those skilled in the art that Fig. 9 The structure shown is for illustration only, and the electronic device may also be a smart phone (such as an Android phone, an iOS phone, etc.), a tablet computer, a PDA, a mobile Internet device (Mobile Internet Devices, MID), a PAD, or other terminal devices. Fig. 9 The structure of the electronic device is not limited. Fig. 9 More or fewer components (such as network interfaces, display devices, etc.) shown in, or having Fig. 9 Different configurations are shown.

[0127] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the hardware related to the terminal device through a program, and the program can be stored in a computer-readable storage medium, and the storage medium may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0128] Example 5

[0129] The embodiment of the present application also provides a computer-readable storage medium. Optionally, in this embodiment, the storage medium can be used to store the program code executed by the identity authentication method provided in the first embodiment.

[0130] Optionally, in this embodiment, the computer-readable storage medium may be located in any one of the computer terminals in a computer terminal group in a computer network, or in any one of the mobile terminals in a mobile terminal group.

[0131] Example 6

[0132] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing the steps of the identity authentication method.

[0133] Optionally, in this embodiment, the computer program product may be located in any computer terminal in a computer terminal group in a computer network, or in any mobile terminal in a mobile terminal group.

[0134] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0135] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0136] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0137] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0138] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0139] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0140] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A door access control system, characterized in that: include: The wristband is used to send the fingerprint features of the target object to the back-end database for identity recognition through the local area network of the target area, and set the status code to the target status code when receiving a signal indicating that the identity recognition is successful; The access control device is used to verify the status code in the wristband and to open when the status code in the wristband is the target status code.

2. The access control system according to claim 1, characterized in that: The bracelet also includes: A fingerprint sensor, used to collect a fingerprint image of the target object; The control chip is used to send the fingerprint feature information corresponding to the fingerprint image of the target object to the back-end database for identity recognition, and set the status code to the target status code when receiving a signal that the identity recognition is passed.

3. The access control system according to claim 1, characterized in that: The bracelet also includes: A wireless module is used to connect to the local area network of the target area so as to send the fingerprint characteristics of the target object to the back-end database for identity recognition through the control chip; A display module is used to display the target status code.

4. An identity authentication method, characterized in that: The identity authentication method applies the access control system according to any one of claims 1 to 3, comprising: The wristband in the access control system sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition, and sets the status code to the target status code when receiving the signal that the identity recognition is passed; The access control device in the access control system verifies the status code in the wristband and is turned on when the status code in the wristband is the target status code.

5. The method according to claim 4, characterized in that Before the wristband in the access control system sends the fingerprint feature of the target object to the back-end database for identity recognition through the local area network of the target area, the method further includes: The wristband detects whether it is within the coverage of the local area network of the target area; If the target area is within the coverage of the local area network, the wristband is connected to the local area network of the target area. After the wristband is successfully connected to the local area network of the target area, the wristband sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition.

6. The method according to claim 4, characterized in that The wristband in the access control system sends the fingerprint features of the target object to the back-end database through the local area network of the target area for identity recognition, including: The fingerprint sensor in the wristband collects the fingerprint image of the target object; The control chip in the wristband performs feature recognition on the fingerprint image to obtain the fingerprint feature; The control chip sends the fingerprint feature to a back-end database through the local area network for identity recognition.

7. The method according to claim 6, characterized in that The fingerprint sensor in the wristband collects the fingerprint image of the target object including: When a contact signal of a target object is detected, the fingerprint sensor irradiates the fingerprint of the target object to form a reflection on the fingerprint surface of the target object; The fingerprint sensor captures the fingerprint image based on the reflection of the fingerprint surface of the target object.

8. The method according to claim 6, characterized in that The control chip in the bracelet performs feature recognition on the fingerprint image, and the fingerprint features obtained include: Performing noise filtering on the fingerprint image to obtain a first fingerprint image; Calculating the blurriness of each pixel in the first fingerprint image to obtain the blurriness of each pixel; Filtering the first fingerprint image according to the blurriness of each pixel to obtain a second fingerprint image; The fingerprint feature is obtained according to the second fingerprint image.

9. The method according to claim 8, characterized in that The fuzziness of each pixel in the first fingerprint image is calculated to obtain the fuzziness of each pixel, including: For a target pixel, obtaining grayscale values ​​of multiple pixels within a target range centered on the target pixel; The fuzziness of each pixel is obtained by calculating according to the gray value.

10. An identity verification device, characterized in that: The device includes: The sending unit is used for the wristband in the access control system to send the fingerprint characteristics of the target object to the back-end database through the local area network of the target area for identity recognition, and when receiving a signal that the identity recognition is passed, the status code is set to the target status code; A verification unit is used for the access control device in the access control system to verify the status code in the wristband, and is turned on when the status code in the wristband is the target status code.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the computer-readable storage medium is located is controlled to execute the identity authentication method described in any one of claims 4 to 9.

12. An electronic device, characterized in that: include: A memory storing an executable program; A processor is used to run the program, wherein the program executes the identity authentication method described in any one of claims 4 to 9 when running.

13. A computer program product, characterized in that The computer program product comprises a stored computer program, and when the computer program is executed by a processor, the identity authentication method according to any one of claims 4 to 9 is implemented.

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