Fingerprint module testing device and testing method

Abstract

This application provides a fingerprint module detection device and method. The fingerprint module detection device provided by this application can detect multiple fingerprint modules at the same time by setting multiple detection components. At the same time, by setting a multi-faceted cylindrical stage, fingerprint modules are set on each surface of the stage. By rotating the stage, the fingerprint modules on different surfaces can be switched and fixed to the detection platform. The detection components can then detect all fingerprint modules set on the surface of the stage, further improving the detection efficiency.

Description

Technical Field

[0001] This application relates to the field of fingerprint detection, and more particularly to a fingerprint module detection device and its detection method. Background Technology

[0002] Fingerprint recognition is a biometric identification technology based on the uniqueness of human fingerprints. It authenticates identity by analyzing fingerprint patterns and is widely used in areas such as mobile phone unlocking, financial payments, and smart locks. A fingerprint module is an electronic component that integrates fingerprint recognition functionality, primarily used to collect, process, and verify human fingerprint features. By integrating fingerprint modules into devices such as mobile phones and door locks, fingerprint recognition can be achieved.

[0003] As the demand for fingerprint recognition continues to increase, fingerprint recognition manufacturers are required to provide a large quantity of stable fingerprint modules. Therefore, there are also higher requirements for the performance and detection efficiency of fingerprint modules.

[0004] However, the detection efficiency of existing fingerprint modules is relatively low. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a fingerprint module detection device that can improve the detection efficiency of fingerprint modules.

[0006] To achieve the above objectives, this application provides a fingerprint module detection device, comprising:

[0007] The outer shell, which encloses a cavity;

[0008] A stage is provided inside the cavity. The stage has multiple surfaces along its circumference, and each of the multiple surfaces is provided with a mounting position for supporting the fingerprint module.

[0009] A testing platform is disposed within the cavity and located above the stage;

[0010] Multiple detection components are disposed on the detection platform for detecting fingerprint modules. The number of detection components corresponds one-to-one with the number of mounting positions on each surface of the stage. When the detection components detect the fingerprint module, the fingerprint module is fixed to the detection platform.

[0011] A rotating assembly is disposed within the cavity and connected to the stage. The rotating assembly can drive the stage to rotate, and by rotating the stage, the mounting positions on different surfaces can be switched to be fixed to the detection platform.

[0012] In one embodiment, the outer casing includes a housing and a cover plate connected to the housing; the cover plate can switch between an open state and a closed state, wherein the cover plate is in the open state to load the fingerprint module to be detected into the mounting position; and when the cover plate is in the closed state, the detection component detects the fingerprint module loaded into the mounting position, and at this time the cavity is a dark box environment.

[0013] In one embodiment, the stage includes a stage body and a first light source disposed within the stage body, wherein the light emitted by the first light source can pass through the stage body and reach the detection component.

[0014] In one embodiment, the detection component includes a detection module and a second light source; the detection platform is provided with a through hole that cooperates with the fingerprint module; the detection module is disposed in the through hole, the second light source and the fingerprint module are respectively located on opposite sides of the through hole, when the detection component detects the fingerprint module, the fingerprint module is fixed in the through hole, and the light emitted by the second light source can pass through the through hole and be directed to the fingerprint module and reflected from the fingerprint module to the detection module.

[0015] In one embodiment, the first light source includes a tubular light source;

[0016] And / or, the second light source includes a flat panel light source.

[0017] In one embodiment, the detection component further includes a fixing member, the fixing member and the second light source are both disposed on the surface of the cover plate facing the housing, and the second light source is located between the fixing member and the cover plate. The fixing member is used to fix the fingerprint module when the cover plate is in the closed state.

[0018] In one embodiment, the rotating assembly includes a rotating shaft and a driving member. The driving member is connected to the rotating shaft and is used to drive the rotating shaft to rotate. The rotating shaft is connected to the stage, and the stage can rotate as the rotating shaft rotates.

[0019] In one embodiment, the drive includes a handle disposed on the outside of the housing and connected to the pivot.

[0020] In one embodiment, the handle includes a first handle and a second handle, which are respectively connected to both ends of the rotating shaft.

[0021] Based on the same inventive concept, this application also discloses a fingerprint module detection method, applied to the fingerprint module detection device described in any of the above claims, comprising: loading the fingerprint module to be detected onto each surface of the stage.

[0022] The fingerprint module is fixed to the detection platform, and the detection component detects the fingerprint module;

[0023] The rotating assembly is used to drive the stage to rotate, so as to fix the fingerprint modules on different surfaces of the stage to the detection platform;

[0024] The fingerprint module on each surface of the stage is detected using the detection component.

[0025] Compared with the prior art, the fingerprint module detection device provided in this application can detect multiple fingerprint modules at the same time by setting up multiple detection components. At the same time, by setting up a stage with multiple surfaces distributed circumferentially, each surface of the stage is provided with a fingerprint module mounting position for installing fingerprint modules. By setting up a rotating component, the stage can be rotated to switch the fingerprint modules on different surfaces to be fixed to the detection platform. The detection components can then detect all fingerprint modules set on the surface of the stage, further improving the detection efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a fingerprint module detection device provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 The diagram shows the structure when the cover plate is in the closed position.

[0029] Figure 3 for Figure 1 The diagram shows the structure of the stage.

[0030] Figure 4 for Figure 3 A schematic diagram of one surface of the stage shown.

[0031] Figure 5 for Figure 1 The diagram shows the structure of the testing platform.

[0032] Figure 6 for Figure 1 A schematic diagram showing the side of the cover plate facing the housing;

[0033] Figure 7A flowchart of a fingerprint module detection method provided in another embodiment of this application.

[0034] Marker explanation:

[0035] 100. Fingerprint module detection device;

[0036] 1. Outer shell; 11. Housing; 12. Cover plate;

[0037] 2. Stage; 21. Stage body; 22. First light source;

[0038] 3. Rotating assembly;

[0039] 4. Testing platform; 41. Through hole;

[0040] 5. Detection components; 51. Second light source; 52. Fixtures;

[0041] 6. Fingerprint module. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0043] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] A fingerprint module is a chip product that embeds fingerprint recognition technology. It can realize functions such as fingerprint image acquisition, feature extraction, and feature comparison on the chip. Developers can easily implement fingerprint recognition functions, which greatly lowers the threshold of the fingerprint recognition industry and has a very positive role in promoting the promotion of fingerprint recognition.

[0045] Fingerprint recognition technology is currently the most mature and inexpensive biometric identification technology. It is widely used not only in access control and attendance systems, but also in various other applications such as laptops, mobile phones, automobiles, and bank payments.

[0046] Fingerprint modules need to undergo testing before leaving the factory to verify their functionality and integrity. This is a crucial step in ensuring the performance, security, and user experience of the fingerprint module product. The necessity of testing fingerprint modules will be discussed from three aspects below:

[0047] First, testing the fingerprint module is a technical necessity:

[0048] Testing the fingerprint module can ensure the accuracy of its biometric recognition and effectively avoid situations where fingerprint modules have defects in their optical design, resulting in missed feature points or misidentification during fingerprint extraction.

[0049] Typically, the following data is tested on a fingerprint module:

[0050] By testing parameters such as the light transmittance (e.g., the light transmittance of the fingerprint module should be greater than 92%) and reflectance (the reflectance of the fingerprint module should be less than 1%), it is possible to avoid the fingerprint module's penetration ability being reduced due to defects in the glass cover, thereby ensuring the functionality of the fingerprint module.

[0051] By detecting the fitting accuracy of the fingerprint module (e.g., the gap between the fingerprint modules should be less than 5μm) and the amount of surface deformation (the radius of curvature of the fingerprint module should be greater than 3mm), image distortion caused by assembly errors can be prevented.

[0052] By testing the fingerprint module in a wide temperature range of -40℃ to 85℃ and in a relative humidity environment of 95%RH, it can be ensured that the fingerprint module can still work stably in extreme environments, avoiding signal drift or functional failure.

[0053] The fingerprint module was subjected to a 1.5m free fall test, and its performance degradation was required to be no more than 5%, in order to verify the mechanical reliability of the fingerprint module.

[0054] Then, testing the fingerprint module is a requirement of regulations and industry standards:

[0055] Because the production of fingerprint modules must comply with the ISO (International Organization for Standardization) / IEC (International Electrotechnical Commission) 19794 standard, this standard has clear requirements for the quality of the detection images and data format of the fingerprint module. It also has requirements for the FAR (False Accept Rate) and FRR (False Rejection Rate, i.e., the probability that the fingerprint module rejects the correct fingerprint for unlocking), requiring FAR to be less than 0.001% and FRR to be less than 0.1%, respectively.

[0056] For fingerprint modules used in payment-level applications, they must also meet security certifications such as PCI (Payment Card Industry) and PTS (Pin Terminal Security) to prevent users' biometric data from being tampered with or leaked.

[0057] Finally, testing the fingerprint module is also for business and user experience considerations:

[0058] Testing fingerprint modules can reduce after-sales costs: According to statistics, defect testing of fingerprint modules at the factory can reduce the on-site failure rate to over 90%, and can identify and resolve problems in advance, thereby avoiding brand reputation damage and high economic losses to enterprises due to large-scale recalls.

[0059] Testing the fingerprint module can optimize the user experience: by optimizing response time (which should be less than 50ms) and power consumption (standby power consumption should be less than 1μA), the user's operating experience can be improved, such as enabling instant unlocking with wet hands. Testing in strong light (over 1000 nits) environments ensures a bit error rate of less than 0.01%, thus guaranteeing smooth product use even in extreme scenarios.

[0060] In conclusion, fingerprint module testing is a crucial step in the fingerprint module production process. However, current testing equipment typically only allows testing one fingerprint module at a time, which hinders production efficiency.

[0061] Therefore, the purpose of this application is to provide a fingerprint module detection device to solve the above problems.

[0062] Please refer to Figures 1 to 6As shown, a fingerprint module detection device 100 provided in an embodiment of this application includes a housing 1, a stage 2, a rotating assembly 3, a detection platform 4, and multiple detection components 5.

[0063] The outer shell 1 forms a cavity, and the stage 2 is disposed within the cavity formed by the outer shell 1. The stage 2 has multiple surfaces arranged circumferentially, each surface having a mounting position for supporting the fingerprint module 6. A detection platform 4 is disposed within the cavity and located above the stage 2. Multiple detection components 5 are disposed on the detection platform 4 for detecting the fingerprint module 6. The number of detection components 5 corresponds one-to-one with the number of mounting positions on each surface of the stage 2. When the detection components 5 are in operation, the detection platform 4 is fixed to the mounting positions on the surface of the stage 2.

[0064] The rotating component 3 is disposed within the cavity and connected to the stage 2. The rotating component 3 can drive the stage 2 to rotate. By rotating the stage 2, the mounting positions on different surfaces of the stage 2 can be switched to be fixed to the detection platform 4, so that after the fingerprint module 6 is installed on the stage 2, the detection component 5 can detect the fingerprint module 6 set on each surface of the stage 2.

[0065] The fingerprint module detection device 100 provided in this application can detect multiple fingerprint modules 6 at the same time by setting multiple detection components 5, thereby improving the detection efficiency of the fingerprint module detection device 100.

[0066] Meanwhile, the stage 2 has multiple surfaces arranged circumferentially, and a fingerprint module 6 is provided on each surface of the stage 2. The stage 2 can quickly switch between fingerprint modules 6 on different surfaces and fix them to the detection platform 4 by rotating the rotating component 3. The detection component 5 can then detect all fingerprint modules 6 set on the surface of the stage 2.

[0067] Secondly, different types of fingerprint modules 6 have different sizes, shapes and detection requirements. By placing different types of fingerprint modules 6 on different surfaces of the stage 2 and switching between different surfaces of the stage 2 and the detection platform, different fingerprint modules 6 can be detected separately, thereby improving the diversity of fingerprint module 6 detection.

[0068] Finally, the fingerprint module detection device 100 provided in this application arranges the stage 2, detection platform 4, detection component 5, rotating component 3 and fingerprint module 6 in the cavity enclosed by the outer shell 1, which facilitates the transportation and movement of the entire fingerprint module detection device 100, reduces transportation costs, and the outer shell 1 can also play a protective role, thereby improving the service life of the fingerprint module detection device 100.

[0069] During the operation of the fingerprint module detection device 100, some internal components may be in a state of high temperature, high pressure or high speed. If the detection personnel accidentally come into contact with these components, it may cause personal injury. However, by placing the stage 2, detection components 5 and other components into the cavity enclosed by the outer shell 1, the detection personnel can be isolated, preventing the operator from accidentally coming into contact with the working components and being injured, thus ensuring the safety of the detection personnel.

[0070] Alternatively, please refer to Figure 1 and Figure 2 As shown, the outer casing 1 includes a housing 11 and a cover plate 12 connected to the housing 11. The cover plate 12 can switch between an open and closed state. When the cover plate 12 is in the open state, the fingerprint module 6 is loaded onto the stage 2. When the cover plate 12 is in the closed state, the detection component 5 detects the fingerprint module 6, and the cavity is a dark box environment at this time.

[0071] The fingerprint module detection device 100 provided in this application has a housing 11 and a cover plate 12. When a fingerprint module 6 needs to be loaded, the cover plate 12 is opened and the fingerprint module 6 is placed on the stage 2. When the fingerprint module 6 needs to be detected, the cover plate 12 is closed to detect the fingerprint module 6.

[0072] This design provides a convenient operating channel for inspectors when the cover plate 12 is open, allowing them to place the fingerprint module 6 to be inspected into the fingerprint module inspection device 100, or to facilitate the removal of the inspected fingerprint module 6 after the inspection component 5 has finished its work, thereby improving work efficiency.

[0073] When it is necessary to observe the real-time detection status of the fingerprint module 6, the testing personnel can also open the cover plate 12 to directly observe whether the fingerprint module 6 and the detection component 5 are in good contact, or check the preliminary effect of the fingerprint module 6 image acquisition. This helps to promptly identify problems that occur during the testing process, such as the fingerprint module 6 being misplaced or the detection component 5 malfunctioning, and to make immediate adjustments and handle them, so as to avoid interfering with the detection of the fingerprint module 6 due to the failure to detect problems in time.

[0074] As the fingerprint module detection device 100 is used over time, dust, dirt, and other impurities will accumulate inside, which may affect the detection accuracy. By setting up a cover plate 12 and a housing 11, the cover plate 12 is always in a closed state under normal circumstances and is only opened when the fingerprint module 6 needs to be installed, which can prevent dust and other impurities from entering.

[0075] Meanwhile, the cover plate 12 also allows operators to easily clean and maintain the internal detection components 5, stage 2, detection platform 4 and other components regularly. This can prevent the image generated by the fingerprint module 6 from becoming blurry due to dust obstruction, thus interfering with the detection results, and can also improve the service life of the fingerprint module detection device 100.

[0076] By setting up a cover plate 12 and a housing 11, this application allows the testing personnel to directly replace the faulty component by opening the cover plate 12 when a component inside the fingerprint module testing device 100 malfunctions, thereby reducing downtime caused by the malfunction of the fingerprint module testing device 100.

[0077] Meanwhile, when ambient light is present, the ambient light will overlap with the light emitted by the fingerprint module 6, resulting in uneven brightness, light spots, and reduced contrast in the collected fingerprint image.

[0078] The fingerprint module 6 is placed in a sealed dark box environment enclosed by the housing 11 and the cover plate 12 for detection. This can completely isolate the external ambient light, so that the fingerprint module 6 only receives the light emitted by itself and reflected or transmitted by the fingerprint. This ensures that the fingerprint image quality of the fingerprint module 6 is stable each time during detection, thereby improving the accuracy of fingerprint feature extraction and matching, and reducing the false recognition rate and the rejection rate.

[0079] The housing 11 and cover plate 12 described in this application can be made of non-opaque metal materials such as aluminum alloy, stainless steel, magnesium alloy, etc. The fact that the housing 11 and cover plate 12 are made of metal materials gives the entire housing 1 high strength and wear resistance, effectively protecting the components located in the cavity enclosed by the housing 1 and extending the service life of the fingerprint module detection device 100.

[0080] Furthermore, metal materials have excellent thermal conductivity and heat dissipation, which can quickly conduct the heat generated by various components during the detection process, avoiding damage to the fingerprint module 6 or causing large errors in detection due to excessive temperature.

[0081] Meanwhile, since the fingerprint module 6 is usually a capacitive fingerprint module, the outer shell 1 made of metal material can form an electromagnetic barrier, which can effectively block external electromagnetic interference to the inside, thereby improving the accuracy of detection.

[0082] In other embodiments, the housing 11 and cover plate 12 described in this application may also be made of non-metallic materials such as polycarbonate, carbon fiber reinforced plastic, glass fiber reinforced plastic, etc., and this application does not impose any restrictions on this.

[0083] Optionally, the housing 11 and the cover 12 can be connected by a rotating mechanism (not shown), allowing the cover 12 to rotate around the housing 11 and switch between open and closed states. Please refer to... Figure 1 As shown, with the cover 12 in the open state, the fingerprint module 6 to be tested can be placed into the housing 11 and placed on the stage 2. Similarly, please refer to... Figure 2 As shown, the cover plate 12 is in the closed state at this time, and the detection component 5 detects the fingerprint module 6 that has been placed inside.

[0084] The rotating mechanism described in this application can be a single rotating shaft, such as a fixed shaft hinge, a spring hinge, or a damping hinge; it can be two parallel rotating shafts, such as a butterfly hinge or a linkage mechanism; and the cover plate 12 can be opened and closed synchronously through connecting rods or gears. Alternatively, the cover plate 12 can be opened and closed through gear and rack meshing. This application does not limit the scope of the application.

[0085] Optionally, the inner surface of the housing 11 is treated with a black matte finish, which can form a diffuse reflection suppression structure on the inner surface of the housing 11, reduce the specular reflectivity of the inner surface of the housing 11, thereby improving the stability of the fingerprint module 6 during detection and improving the detection accuracy.

[0086] Meanwhile, the black finish on the inner surface of the housing 11 absorbs visible light, thereby creating a dark environment inside the housing 11 to prevent external light sources from interfering with the fingerprint module 6.

[0087] Optionally, the stage 2 includes a stage body 21 and a first light source 22 disposed within the stage body 21. The fingerprint module 6 is disposed on each surface of the stage body 21, and the light emitted by the first light source 22 can pass through the stage body 21 and the fingerprint module 6 and finally reach the detection component 5.

[0088] The fingerprint module detection device 100 provided in this application provides a first light source 22 inside the platform 21. The fingerprint module 6 is located between the first light source 22 and the detection component 5. The light emitted by the first light source 22 can pass through the platform 21 to illuminate the fingerprint module 6. The fingerprint module detection device 100 detects the fingerprint module 6 in an environment where the fingerprint module 6 is exposed to transmitted light, making the contrast between light and dark in the fingerprint image generated by the fingerprint module 6 stronger and the obtained fingerprint features clearer.

[0089] The platform 21 described in this application is a multifaceted cylindrical shape and made of a light-transmitting material, allowing the light emitted from the first light source 22 to pass through the platform 21 and illuminate the fingerprint module 6. Specifically, the platform 21 can be made of optical glass materials such as BK7 or B270 glass, acrylic materials, polycarbonate materials, quartz glass, or sapphire materials, etc., and this application does not impose any restrictions on this.

[0090] Optionally, since the first light source 22 needs to be adapted to the shape of the platform 21, the first light source 22 is a tubular light source. The tubular light source has a compact structure, which makes it easy to set the first light source 22 inside the platform 21 and enable the first light source 22 to emit uniform and stable light, so that the detection results of the fingerprint module 6 are more accurate and stable.

[0091] Optionally, the rotating assembly 3 includes a rotating shaft (not shown) and a driving component (not shown). The driving component is connected to the rotating shaft and is used to drive the rotating shaft to rotate. The rotating shaft is connected to the stage 2, and the stage 2 can rotate with the rotating shaft, so that the stage 2 can fix the fingerprint modules 6 on different surfaces to the detection platform 4 by rotating. The detection assembly 5 set on the detection platform 4 can detect the fingerprint modules 6 on different surfaces.

[0092] Optionally, the driving component can be a handle, which is located on the outside of the housing 1 and connected to the rotating shaft, so that the rotating shaft can be driven to rotate by turning the handle.

[0093] In one embodiment, the handle described in this application includes a first handle and a second handle, which are respectively connected to both ends of the rotating shaft, so that the rotating shaft can be stably rotated by rotating the first handle and the second handle in cooperation.

[0094] In another embodiment, only one handle may be provided, and the shaft may be rotated by rotating only one handle. This application does not limit this.

[0095] The fingerprint module detection device 100 provided in this application drives the rotating shaft to rotate by manually turning the handle, so that the stage 2 can switch between fingerprint modules 6 on different surfaces and be fixed to the detection platform 4. The detection component 5 can detect all fingerprint modules 6 to be tested. It can eliminate the need for components such as servo motors, reducers, and controllers, simplify the mechanical mechanism, and reduce costs. As a result, a larger stage 2 can be set in the housing 1 to carry more fingerprint modules 6, thereby improving the detection efficiency of fingerprint modules 6.

[0096] Meanwhile, by manually switching the fingerprint modules 6 on different surfaces of the stage 2, the fingerprint module detection device 100 can be prevented from failing to work when the power is off.

[0097] By manually controlling the handle to switch the fingerprint module 6 on different surfaces of the stage 2, the inspector can perceive the fixation status of the fingerprint module 6 and the inspection platform 4 in real time through the change of the handle torque, which facilitates timely detection of faults.

[0098] Furthermore, the fingerprint module detection device 100 provided in this application can have a power generation component (not shown) and a storage battery (not shown) installed within the cavity enclosed by the housing 1. The power generation component is mechanically connected to the rotating shaft, electrically connected to the storage battery, and electrically connected to the detection component 5. When the rotating shaft rotates, the power generation component can convert a portion of the mechanical energy generated by manually turning the handle into electrical energy and store it in the storage battery. The storage battery then transmits the stored electrical energy to the detection component 5 to power its operation. This eliminates the need for an external power source for the entire fingerprint module detection device 100, allowing the operator to operate the device by turning the handle.

[0099] In other embodiments, the driving component can be a servo motor, which drives the rotating shaft to rotate, so that the fingerprint module detection device 100 can automatically detect the fingerprint module 6 without human intervention, except for loading and unloading the fingerprint module 6. This improves the working efficiency of the fingerprint module detection device 100 and saves manpower.

[0100] Optionally, the detection component 5 includes a detection module (not shown) and a second light source 51. The detection platform 4 is provided with through holes 41. The number of through holes 41 on the detection platform 4 is equal to the number of fingerprint modules 6 on any surface of the stage 2 and corresponds one-to-one. When the detection component 5 detects the fingerprint module, the detection module on any surface of the stage 2 can be fixed in the through hole 41 on the detection platform 4. At this time, the detection module located in the through hole 41 is facing the fingerprint module 6 and detects the fingerprint module 6.

[0101] The fingerprint module testing device 100 provided in this application provides a through hole 41 on the testing platform 4 for fixing the fingerprint module 6. After fixing the fingerprint module 6, the fingerprint module 6 is tested. This can simulate the installation state of the fingerprint module 6 in terminal devices such as mobile phones and vehicle systems, and ensure that the mechanical stress on the fingerprint module 6 during testing is consistent with the mechanical stress on the fingerprint module 6 during actual use, thereby eliminating the interference of mechanical stress and ensuring accurate test results.

[0102] Fixing the fingerprint module 6 before detection reduces the jitter of the fingerprint module 6, thereby optimizing the optical path consistency of the fingerprint module 6 during each detection and reducing the interference of the external environment on the detection results.

[0103] The detection module is positioned directly opposite the fingerprint module 6 to be detected, forming a perpendicular optical path between them. This reduces diffuse reflection loss caused by incident angle deviation and light intensity attenuation due to edge refraction, thereby increasing the intensity of the light signal received by the detection module from the fingerprint module 6 and improving detection accuracy.

[0104] Furthermore, the detection platform 4 described in this application is detachable, so that when it is necessary to load the fingerprint module 6 to be tested or unload the fingerprint module 6 after testing, it is only necessary to take out the detection platform 4 to complete the loading or unloading of the fingerprint module 6, which is convenient and quick.

[0105] In one embodiment, the area of ​​the detection platform 4 described in this application is equal to the area of ​​the cross-section of the outer shell 1 in the horizontal direction, and the area of ​​the detection platform 4 is greater than the area of ​​the surface of the stage 2.

[0106] Since the fingerprint module 6 and the stage 2 are both located below the detection platform 4, the area of ​​the detection platform 4 described in this application is equal to the area of ​​the cross-section of the outer shell 1 in the horizontal direction. The detection platform 4 can completely cover the fingerprint module 6 and the stage 2, so that the detection platform 4 can protect the fingerprint module 6 and the stage 2, prevent external dust, moisture and other substances from entering, thereby ensuring that the fingerprint module 6 is in a stable detection environment and improving the accuracy of the detection results.

[0107] The second light source 51 and the fingerprint module 6 are located on opposite sides of the through hole 41. The light emitted by the second light source 51 can pass through the through hole 41 and be directed to the fingerprint module 6 and reflected from the fingerprint module 6 to the detection component 5.

[0108] The fingerprint module detection device 100 provided in this application, by setting the fingerprint module 6 and the second light source 51 on both sides of the through hole 41 respectively, the light emitted by the second light source 51 passes through the through hole 41 and shines on the fingerprint module 6 and then reflects back from the fingerprint module 6 to the detection module, so that the fingerprint module 6 is in an environment of reflected light illumination and the fingerprint module 6 is detected.

[0109] Meanwhile, in one embodiment, the stage 2 includes a stage body 21 and a first light source 22. The first light source 22 emits transmitted light. The first light source 22 is located below the fingerprint module 6, and the second light source 51 is located above the fingerprint module 6. Therefore, the area above the fingerprint module 6 is reflected light, and the area below the fingerprint module 6 is transmitted light. The fingerprint module 6 is in such an illumination environment, which can verify the effect of reflected light and transmitted light when the fingerprint module 6 collects fingerprints.

[0110] The second light source 51 is a flat panel light source, which can emit uniform light, thereby reducing the light plate distortion caused by surface curvature or material differences in the fingerprint module 6, and thus improving the accuracy of feature point extraction by the fingerprint module 6.

[0111] Furthermore, the fingerprint module detection device 100 provided in this application has an external control module (not shown). The control module is electrically connected to the first light source 22, the second light source 51, the rotating component 3, and the detection component 5, respectively. It can control the light intensity of the first light source 22 and the second light source 51, the rotation of the rotating component 3, and receive the detection results transmitted by the detection component 5.

[0112] By controlling the amount of light from the first light source 22 and the second light source 51, the lighting environment of the fingerprint module 6 can be adjusted, thereby verifying the different effects of reflected light and transmitted light on the fingerprint module 6 when collecting fingerprints.

[0113] By controlling the rotation speed and direction of the rotating component 3, the fingerprint module 6 on different surfaces of the stage 2 can be detected freely, and the detection speed of the fingerprint module detection device 100 can be controlled.

[0114] The control module can receive the detection results transmitted by the detection component 5. By pre-setting the control module's response to different detection results, the detection efficiency of the fingerprint module detection device 100 can be improved. For example, thresholds can be pre-set for data such as false rejection rate, false rejection rate, and feature template quality detected by the detection component 5, so as to quickly detect and screen the fingerprint module 6.

[0115] Furthermore, the detection component 5 also includes a fixing member 52. The fixing member 52 and the second light source 51 are both disposed on the side of the cover plate 12 facing the housing 11, and the second light source 51 is located between the fixing member 52 and the cover plate 12. The fixing member 52 is used to fix the fingerprint module 6.

[0116] The fingerprint module detection device 100 described in this application uses a fixing member 52 and a second light source 51 on a cover plate 12. The fixing member 52 fixes the fingerprint module 6, making the fingerprint module 6 more stable during detection and less susceptible to shaking due to external influences, thus affecting the detection results. Simultaneously, both the second light source 51 and the fixing member 52 are mounted on the cover plate 12. Opening the cover plate 12 releases the fixing member 52 from the fingerprint module 6, and closing the cover plate 12 fixes the fingerprint module 6 in place. The structure is simple and the operation is convenient.

[0117] Furthermore, the fixing member 52 described in this application is a soft silicone opaque frame. The fixing member 52, made of soft silicone material, can mitigate the impact force exerted by the fixing member 52 on the fingerprint module 6 when the cover plate 12 switches from an open to a closed state, preventing damage to the fingerprint module 6 and thus affecting the detection results. Simultaneously, the opaque frame of the fixing member 52 allows it to form a physical light trap structure to block external light during fingerprint module 6 detection, improving the detection stability of the fingerprint module 6.

[0118] Finally, the fixing member 52 is a frame, and the cover plate 12 closes to fix the fingerprint module 6. At this time, the fingerprint module 6 is located inside the frame of the fixing member 52, and the fixing member 52 will not interfere with the detection of the fingerprint module 6 by the detection component 5.

[0119] Reference Figure 7 As shown, based on the same inventive concept, another embodiment of this application also discloses a fingerprint module detection method, applied to the fingerprint module detection device 100 in the above embodiment, which includes the following steps:

[0120] S10. Mount the fingerprint module 6 to be detected on each surface of the stage 2;

[0121] S20. Fix the fingerprint module 6 to the detection platform 4, and the detection component 5 performs detection on the fingerprint module 6;

[0122] S30. The rotating assembly 3 drives the stage 2 to rotate, so as to fix the fingerprint module 6 on different surfaces of the stage 2 to the detection platform 4.

[0123] S40. Use the detection component 5 to detect the fingerprint module 6 on each surface of the stage 2.

[0124] The fingerprint module detection method described in this application uses a fingerprint module detection device 100 to detect the fingerprint module 6 to be detected. The steps are simple and easy to operate, which can reduce the requirements for the detection personnel and improve the detection efficiency of the fingerprint module 6.

[0125] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0126] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0127] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A fingerprint module detection device, characterized in that, include: The outer shell, which encloses a cavity; A stage is provided inside the cavity. The stage has multiple surfaces along its circumference, and each of the multiple surfaces is provided with a mounting position for supporting the fingerprint module. A testing platform is disposed within the cavity and located above the stage; Multiple detection components are disposed on the detection platform for detecting fingerprint modules. The number of detection components corresponds one-to-one with the number of mounting positions on each surface of the stage. When the detection components detect the fingerprint module, the fingerprint module is fixed to the detection platform. A rotating assembly is disposed within the cavity and connected to the stage. The rotating assembly can drive the stage to rotate, and by rotating the stage, the mounting positions on different surfaces can be switched to be fixed to the detection platform.

2. The fingerprint module detection device according to claim 1, characterized in that, The outer casing includes a housing and a cover plate connected to the housing; the cover plate can switch between an open state and a closed state, and the cover plate is in the open state to load the fingerprint module to be tested into the mounting position; when the cover plate is in the closed state, the detection component detects the fingerprint module loaded into the mounting position, and at this time the cavity is a dark box environment.

3. The fingerprint module detection device according to claim 2, characterized in that, The stage includes a stage body and a first light source disposed within the stage body, wherein the light emitted by the first light source can pass through the stage body and reach the detection component.

4. The fingerprint module detection device according to claim 3, characterized in that, The detection component includes a detection module and a second light source; the detection platform is provided with a through hole that cooperates with the fingerprint module; the detection module is disposed in the through hole, and the second light source and the fingerprint module are respectively located on opposite sides of the through hole. When the detection component detects the fingerprint module, the fingerprint module is fixed in the through hole, and the light emitted by the second light source can pass through the through hole and be directed to the fingerprint module and reflected from the fingerprint module to the detection module.

5. The fingerprint module detection device according to claim 4, characterized in that, The first light source includes a tubular light source; And / or, the second light source includes a flat panel light source.

6. The fingerprint module detection device according to claim 4, characterized in that, The detection component also includes a fixing member. The fixing member and the second light source are both disposed on the surface of the cover plate facing the housing, and the second light source is located between the fixing member and the cover plate. The fixing member is used to fix the fingerprint module when the cover plate is in the closed state.

7. The fingerprint module detection device according to claim 1, characterized in that, The rotating assembly includes a rotating shaft and a driving component. The driving component is connected to the rotating shaft and is used to drive the rotating shaft to rotate. The rotating shaft is connected to the platform, and the platform can rotate as the rotating shaft rotates.

8. The fingerprint module detection device according to claim 7, characterized in that, The drive unit includes a handle, which is disposed on the outside of the housing and connected to the rotating shaft.

9. The fingerprint module detection device according to claim 8, characterized in that, The handle includes a first handle and a second handle, which are respectively connected to both ends of the rotating shaft.

10. A fingerprint module detection method, applied to the fingerprint module detection device as described in any one of claims 1-9, characterized in that, include: The fingerprint module to be detected is mounted on each surface of the stage; The fingerprint module is fixed to the detection platform, and the detection component detects the fingerprint module; The rotating assembly is used to drive the stage to rotate, so as to fix the fingerprint modules on different surfaces of the stage to the detection platform; The fingerprint module on each surface of the stage is detected using the detection component.

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