A test fixture

Abstract

The present invention discloses a test fixture for detecting a fingerprint module to be tested, the test fixture comprising: a frame; a first fixing mechanism, arranged on the frame, and fixing a hand to be tested by the first fixing mechanism; a lifting device, arranged on the frame and located below the first fixing mechanism; a second fixing mechanism, arranged on the lifting device, and the fingerprint module to be tested is fixed to the lifting device by the second fixing mechanism; wherein the fingerprint module to be tested reciprocates up and down through the lifting device to contact or separate the hand to be tested. The live fingerprint test fixture provided by the present invention realizes effective detection of real application scenarios of live fingerprint modules.

Description

Technical Field

[0001] The present invention relates to the technical field of jigs, and in particular to a testing jig. Background Art

[0002] With the advent of the smart era, smart door locks have gradually entered millions of homes. Many people are eyeing this big cake of smart door locks, giving rise to uneven "smart lock brands". With the increase in brands, the competition in the smart door lock industry has become more intense. Unscrupulous merchants are willing to reduce product quality in order to reduce prices, causing inconvenience to users and even safety hazards. Various authoritative media have repeatedly reported and emphasized that smart locks must put safety first.

[0003] As the most frequently used scenario for smart door locks, fingerprint recognition is the top priority for security, and live fingerprint recognition is a solution to the problem of fake fingerprints opening the door. Therefore, the test of live fingerprint modules has become a key issue in product quality testing. However, the existing test methods for live fingerprint modules basically use finger prints or other simulation solutions instead of live fingerprints for testing, which cannot detect human fingerprint information, and therefore cannot effectively detect the real application scenarios of live fingerprint modules.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a test fixture to solve the problem that the existing test method of the live fingerprint module cannot effectively detect the real application scenario of the live fingerprint module.

[0006] The technical solution of the present invention is as follows:

[0007] A test fixture, used to detect a fingerprint module to be tested, the test fixture comprising:

[0008] Frame;

[0009] A first fixing mechanism is arranged on the frame, and the hand to be tested is fixed by the first fixing mechanism;

[0010] A lifting device, arranged on the frame and located below the first fixing mechanism;

[0011] A second fixing mechanism is arranged on the lifting device, and the fingerprint module to be tested is fixed on the lifting device through the second fixing mechanism;

[0012] The fingerprint module to be tested reciprocates up and down through the lifting device to contact or separate from the hand to be tested.

[0013] According to a further configuration of the present invention, the lifting device comprises:

[0014] A first rotating disk, wherein the second fixing mechanism is arranged on the first rotating disk, and the fingerprint module to be tested is rotated by the first rotating disk;

[0015] A first lifting mechanism is arranged on the frame and is located below the first rotating disk;

[0016] The second lifting mechanism is arranged on the first lifting mechanism, is located between the first rotating disk and the first lifting mechanism, and is rotatably connected to the first rotating disk.

[0017] According to a further configuration of the present invention, the first lifting mechanism comprises:

[0018] A first base, disposed on the frame;

[0019] A driving motor is arranged on the first base;

[0020] A first mounting seat is spaced apart on the first base and is located on one side of the driving motor;

[0021] A camshaft, disposed on the first mounting seat and connected to the driving motor;

[0022] A plurality of support components are arranged on the first base at intervals;

[0023] The first chassis is connected to the second lifting mechanism and is located above the camshaft, and is slidably connected to the supporting assembly.

[0024] In a further embodiment of the present invention, the support assembly comprises:

[0025] Support seats, symmetrically distributed on the first base;

[0026] A sliding rod is arranged on the top of the support seat, and a sliding part slidably connected to the sliding rod is arranged on the first chassis, and the first chassis is slidably connected to the sliding rod through the sliding part.

[0027] According to a further configuration of the present invention, the second lifting mechanism comprises:

[0028] Slide rails are arranged on the first chassis at intervals;

[0029] Slide blocks are arranged on the slide rail at intervals;

[0030] A first connecting seat, which is arranged between the slide rails at intervals, and two ends of the first connecting seat are respectively connected to the sliders on the slide rails arranged at intervals;

[0031] Lifting components are respectively arranged on the slide rails;

[0032] An adjustment component, arranged on the first connecting seat;

[0033] The second chassis is arranged on the lifting assembly and is rotatably connected to the first rotating disk.

[0034] According to a further configuration of the present invention, the lifting assembly comprises:

[0035] A second mounting seat is arranged on the second chassis at an interval and is arranged opposite to the sliding block;

[0036] a first connecting rod, one end of which is hinged to the second mounting seat, and the other end of which is hinged to the slider;

[0037] A second connecting rod, one end of which is hinged to the second mounting seat, the other end of which is hinged to the slider, and the second connecting rod is cross-arranged with the first connecting rod and hinged to the first connecting rod.

[0038] According to a further configuration of the present invention, the lifting assembly further comprises:

[0039] The connecting plate is arranged between the second mounting seat and the second chassis, and connects the second mounting seat and the second chassis.

[0040] In a further embodiment of the present invention, the adjustment component comprises:

[0041] A third mounting seat is arranged between the slide rails;

[0042] A first bearing, inserted into the third mounting seat;

[0043] A screw rod is passed through the first connecting seat and connected to the first bearing, and the screw rod is threadedly connected to the first connecting seat.

[0044] According to a further configuration of the present invention, the second lifting mechanism further comprises:

[0045] A plurality of protrusions are arranged at intervals along the circumference of the second chassis, and the first rotating disk is provided with matching through holes at positions corresponding to the protrusions, and the rotating disk is clamped with the protrusions on the second chassis through the through holes.

[0046] According to a further configuration of the present invention, the lifting device further comprises:

[0047] The second bearing is arranged on the first rotating disk and is rotatably connected to the second chassis.

[0048] In a further configuration of the present invention, the first fixing mechanism comprises:

[0049] A second base, disposed on the frame;

[0050] A first fixing member is arranged on the second base; wherein the first fixing assembly includes a palm guard, a wrist guard, a finger guard and a universal coil, and the palm guard, the wrist guard, the finger guard and the universal coil are all arranged on the first fixing member;

[0051] A first fixing assembly, arranged on the first fixing member;

[0052] Wherein, the second base is provided with an opening.

[0053] In a further embodiment of the present invention, the test fixture further comprises:

[0054] The laser positioning component is arranged on the frame and faces the opening.

[0055] According to a further configuration of the present invention, the second fixing mechanism comprises:

[0056] A second fixing member, disposed on the first rotating disk;

[0057] The clamping member is arranged on the second fixing member.

[0058] The present invention provides a test fixture for detecting a fingerprint module to be tested, the test fixture comprising: a frame; a first fixing mechanism, arranged on the frame, and the hand to be tested is fixed by the first fixing mechanism; a lifting device, arranged on the frame and located below the first fixing mechanism; a second fixing mechanism, arranged on the lifting device, and the fingerprint module to be tested is fixed to the lifting device by the second fixing mechanism; wherein the fingerprint module to be tested reciprocates up and down through the lifting device to contact or separate the hand to be tested. The test fixture provided by the present invention realizes effective detection of real application scenarios of live fingerprint modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0060] Figure 1 It is a schematic diagram of the overall structure of a test fixture in the present invention.

[0061] Figure 2 It is a structural schematic diagram of the first lifting mechanism and the second lifting mechanism in the present invention.

[0062] Figure 3 It is a partial schematic diagram of the test fixture in the present invention.

[0063] Figure 4 It is a partial schematic diagram of the test fixture of the present invention from another angle.

[0064] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0065] The marks in the accompanying drawings are: 1, frame; 2, first fixing mechanism; 21, second base; 211, opening; 22, first fixing member; 23, universal coil; 3, lifting device; 31, first turntable; 311, through hole; 32, first lifting mechanism; 321, first base; 322, driving motor; 323, first mounting seat; 324, cam shaft; 325, supporting assembly; 3251, supporting seat; 3252, sliding rod; 326, first chassis; 3261, sliding part; 33, second lifting mechanism; 331, Slide rail; 332, slider; 333, first connecting seat; 334, lifting assembly; 3341, second mounting seat; 3342, first connecting rod; 3343, second connecting rod; 3344, connecting plate; 335, adjustment assembly; 3351, third mounting seat; 3352, first bearing; 3353, screw; 336, second chassis; 337, protrusion; 34, second bearing; 4, second fixing mechanism; 41, second fixing member; 42, clamping member; 5, laser positioning member; 6, fingerprint module to be tested; 61, fingerprint head. DETAILED DESCRIPTION

[0066] The inventors have found that the existing testing method for live fingerprint modules basically uses finger prints or other simulation schemes instead of live fingerprints for testing. However, the fingerprint modules of existing smart door locks are usually live fingerprint recognition technology, which can detect human fingerprint information and include finger temperature, electrical signals, etc. Fake fingerprint models or fingerprint films cannot provide these signals of live fingers, and therefore cannot effectively detect the real application scenarios of live fingerprint modules.

[0067] The present invention provides a test fixture, in particular, a test fixture for a fingerprint module that can be tested with a live fingerprint, which increases the recognition rate in the actual application scenarios of testing smart door locks or other fingerprint recognition, and improves the stability and efficiency of live (human hand) testing, thereby realizing the test of the live fingerprint recognition module using human hands to simulate the actual use scenario, and providing reliable test conclusions for biometric products with high security requirements such as smart door locks. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0068] In the embodiments and patent claims, unless otherwise specified, "a", "an" and "the" may refer to a single or a plurality of items.

[0069] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0070] Please also see Figures 1 to 5 , the present invention provides a preferred embodiment of a test fixture.

[0071] like Figure 1 As shown, the present invention provides a test fixture, which can be used to detect fingerprint modules to be tested, such as biometric products with high security requirements such as smart door locks. The test fixture includes: a frame 1, a first fixing mechanism 2, a lifting device 3, and a second fixing mechanism 4. The first fixing mechanism 2 is installed on the frame 1, and the hand to be tested is fixed by the first fixing mechanism 2. The lifting device 3 is arranged on the frame 1 and is located below the first fixing mechanism 2. The second fixing mechanism 4 is arranged on the lifting device 3, and the fingerprint module 6 to be tested is fixed on the lifting device 3 through the second fixing mechanism 4. The fingerprint module 6 to be tested reciprocates up and down through the lifting device 3 to contact or separate the hand to be tested.

[0072] Specifically, during the test, the fingerprint module 6 to be tested is first fixed on the lifting device 3 by the second fixing mechanism 4, and then the hand to be tested is fixed by the first fixing structure, and then the fingerprint module 6 to be tested is driven to move up and down by the lifting device 3, so that the fingerprint head 61 of the fingerprint module 6 to be tested continuously contacts and separates the fingers of the hand to be tested. During the period when the fingerprint head 61 contacts the fingers of the hand to be tested, the fingerprint head 61 can read the characteristic data (temperature of the finger, electrical signal, etc.) of the fingers of the hand to be tested, so as to realize the test of the live fingerprint module with the actual simulation of the real use scene by the human hand, so as to effectively detect the real application scene of the live fingerprint module, increase the recognition rate in the actual application scene of the test smart door lock or other fingerprint recognition, and provide reliable test conclusions for biometric products with high security requirements such as smart door locks. It should be noted that the purpose of the fingerprint head contacting and separating the fingers of the test hand is to repeat the reading data at the same position in large quantities, so as to test the technical indicators such as the success rate of the fingerprint head in identifying the true fingerprint, the success rate of identifying the false fingerprint, and the error rate of identifying the false fingerprint, which requires a large amount of sampling data at the same position.

[0073] See also Figure 1In a further implementation of an embodiment, the first fixing mechanism 2 includes a second base 21, a first fixing member 22 and a first fixing assembly. Specifically, the second base 21 is arranged on the frame 1 and is located above the fingerprint module 6 to be tested, the first fixing member 22 is arranged on the second base 21, and the fixing assembly is arranged on the first fixing member 22. In one implementation, the first fixing member 22 can be a strong magnetic seat. Among them, the first fixing assembly includes a palm guard, a wrist guard, a finger guard, a universal coil 23, etc. During the test process, when the test hand is fixed, the knob on the strong magnetic seat is turned on to make the strong magnetic seat magnetic, so as to be fixed together with the lifting device 3. At this time, the palm and wrist of the hand to be tested are fixed by the palm guard, and the fingers of the hand to be tested are fixed by the finger guard to avoid the fingers of the person to be tested from bending unconsciously. Finally, the nails of the fingers to be tested are fixed by using a contoured double-sided adhesive at the head of the universal coil 23 to fix the fingers of the person to be tested in the same position. Therefore, the present invention is ergonomic. Under the premise of this, the problem of the test result having no mathematical statistical significance due to the different range and position of the test person's finger pressing the fingerprint head 61 (fingerprint identifier) ​​each time can be avoided (if the human hand test cannot ensure that each press is at the same position and with the same force, then the statistical samples cannot reflect the test ability of the fingerprint head). The present invention provides a reliable test conclusion for the fingerprint module 6 to be tested after positioning the fingers of the hand to be tested, and can ensure that each test unlocking is at the same position. Among them, the palm and finger guards and the universal snake 23 are used to stick the test person's nails, which can fix the test person's fingerprint well and will not make the test person tired.

[0074] Please continue reading Figure 1 Furthermore, the second base 21 is provided with an opening 211, and the frame 1 is provided with a laser positioning member 5 at a position corresponding to the opening 211. Specifically, the opening 211 is semicircular and located at the edge of the second base 21. In one implementation, the laser positioning member 5 can be a laser pen, and the light emission direction of the laser pen is corresponding to the center of the opening 211. After the fingerprint module 6 to be tested is fixed on the lifting device 3, the laser pen, the center of the opening 211 and the fingerprint head 61 of the fingerprint module 6 to be tested are located on the same straight line, and the centering positioning of various fingerprint heads 61 can be satisfied by adopting the laser centering method.

[0075] Please continue reading Figure 1In a further implementation of an embodiment, the second fixing mechanism 4 includes a second fixing member 41 and a clamping member 42 arranged on the second fixing member 41, the second fixing member 41 is arranged on the first turntable 31, and the clamping member 42 is arranged on the second fixing member 41. In one implementation, the second fixing member can be a strong magnetic seat. Specifically, a knob is also arranged on the strong magnetic seat. When the knob is turned on, the strong magnetic seat has magnetism and is fixed together with the lifting device 3. In one implementation, the clamping member 42 is a quick clamping member 42. When clamping the fingerprint module 6 to be tested, first turn on the laser pen, and align the center of the fingerprint head 61 of the fingerprint module 6 to be tested with the laser point, then use the quick clamping member 42 to press the fingerprint module 6 to be tested (test object), and then turn on the knob of the strong magnetic seat to complete the fixation and positioning of the fingerprint module 6 to be tested.

[0076] It should be noted that the number of the second fixing components can be set according to actual test conditions to meet the clamping requirements of different fingerprint modules 6 to be tested, wherein the quick clamping member 42 is a prior art and will not be described in detail here.

[0077] See also Figure 1 and Figure 2In a further implementation of an embodiment, the lifting device 3 includes a first turntable 31, a first lifting mechanism 32 and a second lifting mechanism 33, the second fixing mechanism 4 is arranged on the first turntable 31, the fingerprint module 6 to be tested is rotated by the first turntable 31, the first lifting mechanism 32 is arranged on the frame 1 and is located below the first turntable 31, the second lifting mechanism 33 is arranged on the first lifting mechanism 32 and is located between the first turntable 31 and the first lifting mechanism 32, and is rotatably connected to the first turntable 31. Specifically, when the strong magnetic base opens the knob, the fingerprint module 6 to be tested is fixed on the first turntable 31, and then the fingerprint module 6 to be tested is raised to the highest point by the first lifting mechanism 32. If the fingerprint head 61 of the fingerprint module 6 to be tested still cannot contact the finger of the hand to be tested, at this time, the second lifting mechanism 33 is used to adjust the distance between the fingerprint head 61 of the fingerprint module 6 to be tested and the finger of the hand to be tested. Correspondingly, when the fingerprint module 6 to be tested rises to the highest point and exceeds the finger of the hand to be tested, the distance between the fingerprint head 61 of the fingerprint module 6 to be tested and the finger of the hand to be tested can also be adjusted by the second lifting mechanism 33. Therefore, in the specific test process, the fingerprint module 6 to be tested can contact the test hand when it rises to the highest point, and will be separated from the test hand after passing the highest point. In the process of the reciprocating motion of the first lifting mechanism 32, the test head can reciprocate and continuously contact the test person's finger, and each time the test head contacts the test person's finger, a test cycle is completed.

[0078] In a further implementation of an embodiment, the first lifting mechanism 32 includes a first base 321, a driving motor 322, a first mounting seat 323, a camshaft 324, a support assembly 325 and a first chassis 326, the first base 321 is arranged on the frame 1, the driving motor 322 is arranged on the first base 321, the first mounting seat 323 is arranged at intervals on the first base 321 and is located on one side of the driving motor 322, the camshaft 324 is arranged on the first mounting seat 323 and is connected to the driving motor 322, a plurality of support assemblies 325 are arranged and are arranged at intervals on the first base 321, the first chassis 326 is connected to the second lifting mechanism 33 and is located above the camshaft 324, and is slidably connected to the support assembly 325.

[0079] Specifically, the camshaft 324 is composed of a rotating shaft and cams arranged at both ends of the rotating shaft, the support assembly 325 includes a support seat 3251 and a sliding rod 3252 arranged on the support seat 3251, the support seat 3251 is symmetrically distributed on the first base 321, the sliding rod 3252 is arranged on the top of the support seat 3251, and a sliding portion 3261 slidably connected to the sliding rod 3252 is provided on the first chassis 326, and the first chassis 326 is slidably connected to the sliding rod 3252 through the sliding portion 3261. During the test, the driving motor 322 can drive the camshaft 324 to rotate. When the camshaft 324 rotates to contact with the first chassis 326, the first chassis 326 can be lifted up, i.e., raised. When the camshaft 324 rotates to the highest point, the fingerprint module 6 to be tested can be driven to the highest point to contact the test person's finger. When the camshaft 324 is at the highest point, there will be a certain residence time. This time is the reaction time of the fingerprint head 61 reading the test person's finger feature data (the time for the fingerprint head 61 to read the data is usually 1 second).

[0080] It should be noted that one rotation of the camshaft 324 is a test cycle, that is, the rotation cycle of the camshaft 324 is equal to a test cycle. Within a test cycle, the residence time ratio of the test fixture at the highest point can be adjusted according to the peripheral structure of the camshaft 324.

[0081] It should be further explained that the drive motor 322 in the present invention is connected to the reduction mechanism, so that the rotation speed of the camshaft 324 can be adjusted. By adjusting the rotation speed of the camshaft 324, the time requirements of different test cycles can be met. In other words, the present invention can meet the different requirements of different test objects for the test cycle.

[0082] Furthermore, the second lifting mechanism 33 includes a slide rail 331, a slider 332, a first connecting seat 333, a lifting assembly 334, an adjusting assembly 335 and a second chassis 336. The slide rails 331 are arranged on the first chassis 326 at intervals, the sliders 332 are arranged on the slide rails 331 at intervals, the first connecting seats 333 are arranged between the slide rails 331 at intervals, the two ends of the first connecting seat 333 are respectively connected to the sliders 332 on the slide rails 331 arranged at intervals, the lifting assemblies 334 are respectively arranged on the slide rails 331, the adjusting assembly 335 is arranged on the first connecting seat 333, and the second chassis 336 is arranged on the lifting assembly 334 and is rotatably connected to the first turntable 31.

[0083] Specifically, the lifting assembly 334 includes a second mounting seat 3341, a first connecting rod 3342 and a second connecting rod 3343. The second mounting seat 3341 is spaced apart on the second chassis 336 and is arranged opposite to the slider 332. One end of the first connecting rod 3342 is hinged to the second mounting seat 3341, the other end of the first connecting rod 3342 is hinged to the slider 332, one end of the second connecting rod 3343 is hinged to the second mounting seat 3341, the other end of the second connecting rod 3343 is hinged to the slider 332, and the second connecting rod 3343 is cross-arranged with the first connecting rod 3342 and is hinged to the first connecting rod 3342. The second mounting seat 3341, the first connecting rod 3342 and the second connecting rod 3343 form an "X"-shaped lifting structure, and the second chassis 336 is lifted or lowered when the first connecting rod 3342 and the second connecting rod 3343 are combined or opened. In one implementation, the second mounting seat 3341 may be fixedly connected to the second chassis 336 by bolts, and the first connecting rod 3342 , the second connecting rod 3343 and the second mounting seat 3341 may be hinged by a latch.

[0084] More specifically, the adjustment assembly 335 includes a third mounting seat 3351, a first bearing 3352 and a screw 3353, wherein the third mounting seat 3351 is arranged between the slide rails 331 and fixedly connected to the first base 321, the first bearing 3352 is passed through the third mounting seat 3351, the screw 3353 is passed through the first connecting seat 333 and is connected to the first bearing 3352, wherein the screw 3353 is passed through the first connecting seat 333 spaced between the slide rails 331 and is connected to the first bearing 3352 located between the two first connecting seats 333, and the screw 3353 is threadedly connected to the first connecting seat 333, wherein both ends of the screw 3353 have knobs, and by rotating the knobs, the first connecting seat 333 can be pushed to slide on the slide rail 331.

[0085] In the specific test process, when the stroke of the camshaft 324 reaches the highest point, the distance between the fingerprint head 61 and the test person's finger can be adjusted by the second lifting mechanism 33, which is specifically: by rotating the screw rod 3353 in the forward or reverse direction, the first connecting seat 333 can be pushed to slide on the slide rail 331. For example, when the screw rod 3353 is rotated in the forward direction, one of the first connecting seats 333 moves toward the other first connecting seat 333, so that the first connecting rod 3342 and the second connecting rod 3343 move in the merging direction, and the height of the first connecting rod 3342 and the second connecting rod 3343 rises. That is to say, at this time, the first connecting rod 3342 and the second connecting rod 3343 are , the second chassis 336 is pushed up to raise the position of the second chassis 336. If the screw rod 3353 is rotated in the opposite direction, one of the first connection seats 333 moves in a direction away from the other first connection seat 333, so that the first connecting rod 3342 and the second connecting rod 3343 move in an opening direction, and the height of the first connecting rod 3342 and the second connecting rod 3343 decreases. That is, at this time, under the action of the first connecting rod 3342 and the second connecting rod 3343, the second chassis 336 is lowered to a certain height, wherein the screw rod 3353 is threadedly connected to the first connection seat 333, so that the height of the second chassis 336 can be finely adjusted. Then, in a specific test, by adjusting the "X"-shaped lifting structure to adjust the height of the second chassis 336, the height requirements of different fingerprint modules 6 to be tested can be met, that is, the height positioning of the fingerprint module 6 to be tested can be achieved.

[0086] See also Figure 2 and Figure 3 In a further implementation of an embodiment, the lifting assembly 334 also includes a connecting plate 3344, and the connecting plate 3344 is arranged between the second mounting seat 3341 and the second chassis 336, and connects the second mounting seat 3341 and the second chassis 336. By connecting the second mounting seat 3341 and the second chassis 336 through the connecting plate 3344, the contact area between the second chassis 336 and the second mounting seat 3341 can be indirectly increased, thereby enhancing the installation stability of the second chassis 336.

[0087] See also Figures 1 to 3In a further implementation of an embodiment, the second lifting mechanism 33 further includes: a plurality of protrusions 337. In one implementation, the protrusions 337 are elastic protrusions, and the protrusions 337 are arranged at intervals along the circumference of the second chassis 336. The first turntable 31 is provided with an adaptive through hole 311 at the position corresponding to the protrusion 337, and the turntable is engaged with the protrusion 337 on the second chassis 336 through the through hole 311. During the test process, different angles of the fingerprint head 61 of the fingerprint module 6 to be tested need to be tested. Then, after the cam shaft 324 rotates one circle, that is, after the fingerprint module 6 to be tested completes one test, the fingerprint module 6 to be tested needs to be rotated to test the same position of the finger of the hand to be tested. In one implementation, the protrusions 337 are arranged at intervals of 90° along the second chassis 336, that is, after the fingerprint module 6 to be tested completes a test, the data of the same test position rotated 90° can be tested again by rotating the first turntable 31, thereby simulating different angles when pressing fingerprints to reduce the workload of changing the finger test position.

[0088] See also Figure 1 , Figure 4 and Figure 5 In a further implementation of an embodiment, the lifting device 3 also includes a second bearing 34, which is arranged on the first turntable 31 and is rotatably connected to the second chassis 336. The first turntable 31 and the second chassis 336 are rotatably connected through the second bearing 34, so that the first turntable 31 can be rotated to simulate different angles when pressing fingerprints.

[0089] In summary, the present invention provides a test fixture for detecting a fingerprint module to be tested, and the fingerprint module test fixture includes: a frame; a first fixing mechanism, which is arranged on the frame, and the hand to be tested is fixed by the first fixing mechanism; a lifting device, which is arranged on the frame and located below the first fixing mechanism; a second fixing mechanism, which is arranged on the lifting device, and the fingerprint module to be tested is fixed on the lifting device by the second fixing mechanism; wherein the fingerprint module to be tested reciprocates up and down through the lifting device to contact or separate the hand to be tested. The live fingerprint test fixture provided by the present invention realizes the test of the live fingerprint module by actually simulating the real use scenario with human hands, so that the real application scenario of the live fingerprint module can be effectively detected, the recognition rate in the actual application scenario of testing smart door locks or other fingerprint recognition is increased, and reliable test conclusions are provided for biometric products with high security requirements such as smart door locks.

[0090] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A test fixture for detecting a fingerprint module to be tested, characterized in that: The test fixture includes: Frame; A first fixing mechanism is arranged on the frame, and the hand to be tested is fixed by the first fixing mechanism; A lifting device, arranged on the frame and located below the first fixing mechanism; A second fixing mechanism is arranged on the lifting device, and the fingerprint module to be tested is fixed on the lifting device through the second fixing mechanism; The fingerprint module to be tested reciprocates up and down through the lifting device to contact or separate from the hand to be tested.

2. The test fixture according to claim 1, characterized in that: The lifting device comprises: A first rotating disk, wherein the second fixing mechanism is arranged on the first rotating disk, and the fingerprint module to be tested is rotated by the first rotating disk; A first lifting mechanism is arranged on the frame and is located below the first rotating disk; The second lifting mechanism is arranged on the first lifting mechanism, is located between the first rotating disk and the first lifting mechanism, and is rotatably connected to the first rotating disk.

3. The test fixture according to claim 2, characterized in that: The first lifting mechanism comprises: A first base, disposed on the frame; A driving motor is arranged on the first base; A first mounting seat is spaced apart on the first base and is located on one side of the driving motor; A camshaft, disposed on the first mounting seat and connected to the driving motor; A plurality of support components are arranged on the first base at intervals; The first chassis is connected to the second lifting mechanism and is located above the camshaft, and is slidably connected to the supporting assembly.

4. The test fixture according to claim 3, characterized in that: The support assembly comprises: Support seats, symmetrically distributed on the first base; A sliding rod is arranged on the top of the support seat, and a sliding part slidably connected to the sliding rod is arranged on the first chassis, and the first chassis is slidably connected to the sliding rod through the sliding part.

5. The test fixture according to claim 3, characterized in that: The second lifting mechanism comprises: Slide rails are arranged on the first chassis at intervals; Slide blocks are arranged on the slide rail at intervals; A first connecting seat, which is arranged between the slide rails at intervals, and two ends of the first connecting seat are respectively connected to the sliders on the slide rails arranged at intervals; Lifting components are respectively arranged on the slide rails; An adjustment component, arranged on the first connecting seat; The second chassis is arranged on the lifting assembly and is rotatably connected to the first rotating disk.

6. The test fixture according to claim 5, characterized in that: The lifting assembly comprises: A second mounting seat is arranged on the second chassis at an interval and is arranged opposite to the sliding block; a first connecting rod, one end of which is hinged to the second mounting seat, and the other end of which is hinged to the slider; A second connecting rod, one end of which is hinged to the second mounting seat, the other end of which is hinged to the slider, and the second connecting rod is cross-arranged with the first connecting rod and hinged to the first connecting rod.

7. The test fixture according to claim 6, characterized in that: The lifting assembly also includes: The connecting plate is arranged between the second mounting seat and the second chassis, and connects the second mounting seat and the second chassis.

8. The test fixture according to claim 5, characterized in that: The adjustment component comprises: A third mounting seat is arranged between the slide rails; A first bearing, inserted into the third mounting seat; A screw rod is passed through the first connecting seat and connected to the first bearing, and the screw rod is threadedly connected to the first connecting seat.

9. The test fixture according to claim 5, characterized in that: The second lifting mechanism also includes: A plurality of protrusions are arranged at intervals along the circumference of the second chassis, and the first rotating disk is provided with matching through holes at positions corresponding to the protrusions, and the rotating disk is clamped with the protrusions on the second chassis through the through holes.

10. The test fixture according to claim 5, characterized in that: The lifting device also includes: The second bearing is arranged on the first rotating disk and is rotatably connected to the second chassis.

11. The test fixture according to claim 1, characterized in that: The first fixing mechanism comprises: A second base, disposed on the frame; A first fixing member, disposed on the second base; A first fixing component is arranged on the first fixing member; wherein the first fixing component comprises a palm guard, a wrist guard, a finger guard and a universal coil, and the palm guard, the wrist guard, the finger guard and the universal coil are all arranged on the first fixing member; Wherein, the second base is provided with an opening.

12. The test fixture according to claim 11, characterized in that: The test fixture also includes: The laser positioning component is arranged on the frame and faces the opening.

13. The test fixture according to claim 2, characterized in that: The second fixing mechanism comprises: A second fixing member, disposed on the first rotating disk; The clamping member is arranged on the second fixing member.

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