CN109376650B - Optical fingerprint identification module detection device and detection method - Google Patents
Optical fingerprint identification module detection device and detection method Download PDFInfo
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- CN109376650B CN109376650B CN201811239414.4A CN201811239414A CN109376650B CN 109376650 B CN109376650 B CN 109376650B CN 201811239414 A CN201811239414 A CN 201811239414A CN 109376650 B CN109376650 B CN 109376650B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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Abstract
The invention relates to an optical fingerprint identification module detection device, which comprises: the device comprises a base, a movable seat, a longitudinal driving device, a plurality of optical detection devices and a detection circuit board, wherein the movable seat is provided with a transverse fixed plate and is in sliding connection with the base through a longitudinal linear guide rail; the optical detection device includes: the light source detection device comprises a light source driving board arranged at the front end of a transverse fixing board, a vertical linear guide rail, a lifting seat, a lifting driving device, a buffering floating assembly, an optical detection assembly and a module detection seat, wherein the vertical linear guide rail is connected with the rear end of the transverse fixing board, the lifting seat is connected with the upper end of the vertical linear guide rail, the buffering floating assembly is arranged at the lower end of the vertical linear guide rail, the optical detection assembly is arranged at the lower end of the buffering floating assembly. Optical fingerprint identification module detection device, detect the photosensitive property and the resolution ratio of optical fingerprint identification module, detection efficiency is higher, detection error is less.
Description
Technical Field
The invention relates to the technical field of fingerprint module detection and sorting, in particular to an optical fingerprint identification module detection device and a detection method.
Background
Nowadays, fingerprint identification technology has been widely applied in the fields of smart phones, attendance machines, security entrance guards, port clearance and the like; the sensitivity and the resolution of the optical fingerprint identification module are detected, and the reliability of the optical fingerprint identification module can be ensured; the sensitivity and resolution detection of the traditional optical fingerprint identification module is manually detected, so that the defects of low detection efficiency and large detection error exist; therefore, it is an urgent need to solve the above-mentioned problems by designing an optical fingerprint identification module detection apparatus and detection method with high detection efficiency and small detection error.
Disclosure of Invention
The invention aims to overcome the defects that the existing optical fingerprint identification module has low detection efficiency and large detection error due to the fact that the sensitivity and the resolution are manually detected, and provides the detection device and the detection method for the optical fingerprint identification module, which have high detection efficiency and small detection error.
The specific technical scheme of the invention is as follows:
an optical fingerprint identification module detection device, comprising: the device comprises a base, a movable seat, a longitudinal driving device, a plurality of optical detection devices and a detection circuit board, wherein the movable seat is provided with a transverse fixed plate and is in sliding connection with the base through a longitudinal linear guide rail; the optical detection device includes: the light source detection device comprises a light source driving board arranged at the front end of a transverse fixing board, a vertical linear guide rail, a lifting seat, a lifting driving device, a buffering floating assembly, an optical detection assembly and a module detection seat, wherein the vertical linear guide rail is connected with the rear end of the transverse fixing board, the lifting seat is connected with the upper end of the vertical linear guide rail, the buffering floating assembly is arranged at the lower end of the vertical linear guide rail, the optical detection assembly is arranged at the lower end of the buffering floating assembly. Optical fingerprint identification module detection device, detect the photosensitive property and the resolution ratio of optical fingerprint identification module, detection efficiency is higher, detection error is less.
Preferably, the optical detection assembly comprises: the light source holds in the palm the cover, and the upper end is equipped with the connecting seat and holds in the palm the detection light source that the cover is connected with the light source, locates detection pressure head, printing opacity through-hole and the sensitization through-hole of light source support cover lower extreme, covers sensitization through-hole lower extreme and holds in the palm the sensitization board of being connected with the light source. The light of the optical detection assembly irradiates the light sensing plate through the light sensing through hole, and the light irradiates the light sensing area of the optical fingerprint identification module through the light transmitting through hole; the light sensing plate converts the received optical signal into an electric signal and transmits the electric signal to a detection circuit board in signal connection with the light sensing plate; the optical fingerprint identification module converts the received optical signals into electric signals and transmits the electric signals to the detection circuit board through the PCB adapter plate which is respectively in signal connection with the probe set and the detection circuit board; the detection circuit board conveys the test host computer of signal connection with the signal connection, and the test host computer compares the signal of telecommunication that the light signal that receives the photosheet converts to and the signal of telecommunication that the light signal that optics fingerprint identification module received converts with the standard signal of telecommunication of prestoring respectively, judges through the analysis, does benefit to the detection precision that improves the sensitization performance and the resolution ratio of optics fingerprint identification module.
Preferably, the module detecting seat comprises: the base body is connected with the base through screws, the upper end of the base body is provided with a containing groove, the probe group is arranged in the base body, the module base is arranged in the containing groove and is detachably connected with the base body, the PCB adapter plate is arranged at one side end of the module base, the module containing cavity is arranged at the upper end of the module base, and the electric through hole is arranged at the bottom surface of the module containing cavity and is opposite to the probe group. The module detection seat has a simple and practical structure; the module seat can be dismantled with the pedestal and be connected, does benefit to the optics fingerprint identification module that the module seat of change detected different specifications.
Preferably, the buffering floating assembly comprises: the lower end of the floating pressure plate is provided with a through groove and a connecting block connected with the upper end of the connecting seat, a pressure spring group is arranged between the floating pressure plate and the connecting block, and the floating pressure plate is connected with the lower end of the vertical linear guide rail; the upper end of the connecting block is provided with bolt through holes which are communicated with the top surface of the through groove and have the same number as the equal-height bolts, and guide through holes which have the same number as the guide pins and are in one-to-one correspondence; the upper ends of the screw rods of the equal-height bolts penetrate through the bolt through holes in a one-to-one correspondence manner and are connected with the floating pressure plate; the guide pin includes: the diameter of the guide section is matched with that of the guide through hole and penetrates through the guide through hole, the diameter of the connecting section is smaller than that of the guide section, the upper end of the connecting section is connected with the floating pressing plate, and the frustum-shaped transition section is respectively connected with the upper end of the guide section and the lower end of the connecting section; in an initial state, a vertical gap is formed between the lower end of the floating pressure plate and the upper end of the connecting block; the distance between the upper end of the guide section and the top surface of the through groove is smaller than the height of the vertical gap. Buffering the optical detection subassembly of subassembly that floats descends, detects the pressure head and the golden finger contact of optics fingerprint identification module, and pressure spring group is compressed, and the direction section of uide pin descends to direction through-hole downside, because the clearance is great between frustum shape changeover portion and the direction through-hole, the connecting block can carry out the three direction of XYZ, the floating of six degrees of freedom, does benefit to the decline impact force that buffering optical detection subassembly's light source held in the palm the cover and can not produce the yawing force.
Preferably, the optical fingerprint identification module detection device further comprises: and the two ends of the tension spring are respectively connected with the lifting seat and the floating pressure plate. The extension spring does benefit to under the circumstances of equipment outage suddenly or motor loss of excitation, draws the primary point position back with optics detection subassembly, prevents to detect the seat with the module and collides.
Preferably, the lifting driving device is a cylinder connected with the transverse fixing plate; the piston rod of the cylinder is connected with the lower end of the lifting seat. The lifting driving device is a cylinder connected with the transverse fixing plate, and the universal part is low in cost.
Preferably, the longitudinal driving means comprises: the device comprises two transmission synchronizing wheels respectively pivoted with a base, a transmission synchronous belt respectively in transmission connection with the two transmission synchronizing wheels, a motor connected with the base, a driving synchronizing wheel connected with an output shaft of the motor, a driven synchronizing wheel coaxially connected with one transmission synchronizing wheel, and a driving synchronous belt respectively in transmission connection with the driving synchronizing wheel and the driven synchronizing wheel; one side of the driving synchronous belt is connected with the movable seat. The longitudinal driving device has simple and practical structure and high precision.
A detection method of an optical fingerprint identification module detection device is provided, wherein the optical fingerprint identification module detection device is provided with a limit structure of the optical fingerprint identification module detection device; (1) placing the optical fingerprint identification module in a module accommodating cavity of the module detection seat, wherein a golden finger of the optical fingerprint identification module is positioned in the electric through hole and is opposite to the probe set; (2) the longitudinal driving device drives the movable seat to move, so that the optical detection assembly is positioned above the corresponding module detection seat; (3) a piston rod of a cylinder of the lifting driving device drives a lifting seat to descend, an optical detection assembly is driven to descend through a vertical linear guide rail and a buffering floating assembly, and a detection pressure head is in contact with a golden finger of the optical fingerprint identification module; (4) the pressure spring group of the buffering floating assembly is compressed, the guide section of the guide pin descends to the lower side of the guide through hole, the connecting block can float in three directions of XYZ and six degrees of freedom due to the large gap between the frustum-shaped transition section and the guide through hole, the descending impact force of the light source support cover of the optical detection assembly is buffered, no lateral force is generated until the light source support cover presses the base body of the module detection base, and the golden finger presses the probe group; (5) a detection light source electrically connected with the light source driving board is started, and light irradiates the light sensing board through the light sensing through hole and irradiates the light sensing area of the optical fingerprint identification module through the light transmission through hole; the light sensing plate converts the received optical signal into an electric signal and transmits the electric signal to a detection circuit board in signal connection with the light sensing plate; the optical fingerprint identification module converts the received optical signals into electric signals and transmits the electric signals to the detection circuit board through the PCB adapter plate which is respectively in signal connection with the probe set and the detection circuit board; (6) the detection circuit board transmits the electric signal to a test host machine in signal connection, the test host machine compares the electric signal converted from the optical signal received by the light sensing plate and the electric signal converted from the optical signal received by the optical fingerprint identification module with the pre-stored standard electric signal respectively, and the detection of the light sensing performance and the resolution of the optical fingerprint identification module is completed through analysis and judgment. The detection method of the optical fingerprint identification module detection device can meet the requirements of detecting the photosensitive performance and the resolution of the optical fingerprint identification module, and is high in detection efficiency and small in detection error.
Compared with the prior art, the invention has the beneficial effects that: optical fingerprint identification module detection device, detect the photosensitive property and the resolution ratio of optical fingerprint identification module, detection efficiency is higher, detection error is less. The light of the optical detection assembly irradiates the light sensing plate through the light sensing through hole, and the light irradiates the light sensing area of the optical fingerprint identification module through the light transmitting through hole; the light sensing plate converts the received optical signal into an electric signal and transmits the electric signal to a detection circuit board in signal connection with the light sensing plate; the optical fingerprint identification module converts the received optical signals into electric signals and transmits the electric signals to the detection circuit board through the PCB adapter plate which is respectively in signal connection with the probe set and the detection circuit board; the detection circuit board conveys the test host computer of signal connection with the signal connection, and the test host computer compares the signal of telecommunication that the light signal that receives the photosheet converts to and the signal of telecommunication that the light signal that optics fingerprint identification module received converts with the standard signal of telecommunication of prestoring respectively, judges through the analysis, does benefit to the detection precision that improves the sensitization performance and the resolution ratio of optics fingerprint identification module. The module detection seat has a simple and practical structure; the module seat can be dismantled with the pedestal and be connected, does benefit to the optics fingerprint identification module that the module seat of change detected different specifications. The light source of buffering subassembly that floats holds in the palm the cover and descends, detects the pressure head and the golden finger contact of optics fingerprint identification module, and pressure spring group is compressed, and the direction section of uide pin descends to direction through-hole downside, because the clearance is great between frustum shape changeover portion and the direction through-hole, the connecting block can carry out the unsteady of XYZ three direction, six degrees of freedom, and the decline impact force of buffering optics detection subassembly's light source support cover just can not produce the yawing force. Buffering the optical detection subassembly of subassembly that floats descends, detects the pressure head and the golden finger contact of optics fingerprint identification module, and pressure spring group is compressed, and the direction section of uide pin descends to direction through-hole downside, because the clearance is great between frustum shape changeover portion and the direction through-hole, the connecting block can carry out the three direction of XYZ, the floating of six degrees of freedom, does benefit to the decline impact force that buffering optical detection subassembly's light source held in the palm the cover and can not produce the yawing force. The extension spring does benefit to under the circumstances of equipment outage suddenly or motor loss of excitation, draws the primary point position back with optics detection subassembly, prevents to detect the seat with the module and collides. The lifting driving device is a cylinder connected with the transverse fixing plate, and the universal part is low in cost. The longitudinal driving device has simple and practical structure and high precision. The detection method of the optical fingerprint identification module detection device can meet the requirements of detecting the photosensitive performance and the resolution of the optical fingerprint identification module, and is high in detection efficiency and small in detection error.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of the optical detection device;
FIG. 3 is a bottom view of FIG. 2;
FIG. 4 is a schematic structural diagram of a module inspection socket;
fig. 5 is a schematic structural view of the floating assembly.
In the figure: a base 1, a transverse fixing plate 2, a longitudinal linear guide rail 3, a moving seat 4, a detection circuit board 5, a light source driving plate 6, a vertical linear guide rail 7, a lifting seat 8, a light source support cover 9, a connecting seat 10, a detection light source 11, a detection pressure head 12, a light transmitting through hole 13, a light sensing through hole 14, a light sensing plate 15, a containing groove 16, a seat body 17, a module seat 18, a PCB adapter plate 19, a module containing cavity 20, an electric connecting through hole 21 and a floating pressing plate 22, the device comprises a through groove 23, a connecting block 24, a pressure spring set 25, an equal-height bolt 26, a guide pin 27, a bolt through hole 28, a guide through hole 29, a guide section 30, a connecting section 31, a frustum-shaped transition section 32, a vertical gap 33, a tension spring 34, an air cylinder 35, a transmission synchronous wheel 36, a transmission synchronous belt 37, a motor 38, a driving synchronous wheel 39, a driven synchronous wheel 40, a driving synchronous belt 41, an optical fingerprint identification module 42, a golden finger 43 and an optical detection device 44.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in figures 1 to 5: an optical fingerprint identification module detection device, comprising: the device comprises a base 1, a movable seat 4 which is provided with a transverse fixed plate 2 and is connected with the base in a sliding way through two longitudinal linear guide rails 3, a longitudinal driving device, four optical detection devices 44 which are arranged in parallel transversely, and a detection circuit board 5 arranged at the lower end of the base; the optical detection device includes: locate the light source drive plate 6 of horizontal fixed plate front end, the vertical linear guide 7 of slider and horizontal fixed plate rear end screw connection, with the lift seat 8 of vertical linear guide upper end screw connection, lift drive, locate the buffering subassembly that floats of vertical linear guide lower extreme, locate the optics detection subassembly of buffering subassembly lower extreme that floats, locate on the base and be located the module detection seat of optics detection subassembly below.
The optical detection assembly comprises: the light source holds in the palm cover 9, and the upper end is equipped with connecting seat 10 and holds in the palm detection light source 11 of cover screw connection with the light source, locates the detection pressure head 12, printing opacity through-hole 13 and sensitization through-hole 14 of light source support cover lower extreme, covers sensitization through-hole lower extreme and holds in the palm the sensitization board 15 of cover screw connection with the light source.
The module detect the seat include: a base body 17 which is connected with the base screw and provided with a containing groove 16 at the upper end, a probe group (not shown in the drawing) arranged in the base body, a module base 18 which is arranged in the containing groove and connected with the base body screw, a PCB adapter plate 19 arranged at one side end of the module base, a module containing cavity 20 arranged at the upper end of the module base and an electric through hole 21 which is arranged at the bottom surface of the module containing cavity and is opposite to the probe group.
The buffering floating assembly comprises: the device comprises a floating pressure plate 22 connected with the lower end of a vertical linear guide rail, a connecting block 24, a pressure spring set 25, two equal-height bolts 26 and two guide pins 27, wherein the lower end of the connecting block is provided with a through groove 23 and is connected with the upper end of a connecting seat through screws; the upper end of the connecting block is provided with bolt through holes 28 which are communicated with the top surface of the through groove and have the same number as the equal-height bolts, and guide through holes 29 which have the same number as the guide pins and are in one-to-one correspondence; the upper ends of the screw rods of the equal-height bolts penetrate through the bolt through holes in a one-to-one correspondence manner and are connected with the floating pressure plate; the guide pin includes: the diameter of the guide section is in clearance fit with the diameter of the guide through hole and penetrates through the guide through hole, the diameter of the connecting section 31 is smaller than that of the guide section, the upper end of the connecting section is in interference fit connection with the floating pressing plate, and the upper end of the connecting section and the lower end of the connecting section are respectively integrated to form a connected frustum-shaped transition section 32; in an initial state, a vertical gap 33 is formed between the lower end of the floating pressure plate and the upper end of the connecting block; the distance between the upper end of the guide section and the top surface of the through groove is smaller than the height of the vertical gap.
Optical fingerprint identification module detection device still include: and a tension spring 34 with two ends respectively connected with the lifting seat and the floating pressure plate.
The lifting driving device is a cylinder 35 connected with the transverse fixing plate through screws; the piston rod of the cylinder is connected with the lower end of the lifting seat through a screw.
The longitudinal driving device comprises: two transmission synchronizing wheels 36 respectively pivoted with the base through a bearing, a transmission synchronizing belt 37 respectively in transmission connection with the two transmission synchronizing wheels, a motor 38 connected with a base screw, a driving synchronizing wheel 39 connected with an output shaft key of the motor, a driven synchronizing wheel 40 connected with one transmission synchronizing wheel in coaxial key connection, and a driving synchronizing belt 41 respectively in transmission connection with the driving synchronizing wheel and the driven synchronizing wheel; one side of the driving synchronous belt is connected with the movable seat through a screw. The motor is a servo motor.
A detection method of an optical fingerprint identification module detection device is provided, wherein the optical fingerprint identification module detection device is provided with a limit structure of the optical fingerprint identification module detection device; (1) placing the optical fingerprint identification module 42 in a module accommodating cavity of the module detection seat, wherein a gold finger 43 of the optical fingerprint identification module is positioned in the electric through hole and is opposite to the probe set; (2) the longitudinal driving device drives the movable seat to move, so that the optical detection assembly is positioned above the corresponding module detection seat; (3) a piston rod of a cylinder of the lifting driving device drives a lifting seat to descend, an optical detection assembly is driven to descend through a vertical linear guide rail and a buffering floating assembly, and a detection pressure head is in contact with a golden finger of the optical fingerprint identification module; (4) the pressure spring group of the buffering floating assembly is compressed, the guide section of the guide pin descends to the lower side of the guide through hole, the connecting block can float in three directions of XYZ and six degrees of freedom due to the large gap between the frustum-shaped transition section and the guide through hole, the descending impact force of the light source support cover of the optical detection assembly is buffered, no lateral force is generated until the light source support cover presses the base body of the module detection base, and the golden finger presses the probe group; (5) a detection light source electrically connected with the light source driving board is started, and light irradiates the light sensing board through the light sensing through hole and irradiates the light sensing area of the optical fingerprint identification module through the light transmission through hole; the light sensing plate converts the received optical signal into an electric signal and transmits the electric signal to a detection circuit board in signal connection with the light sensing plate; the optical fingerprint identification module converts the received optical signals into electric signals and transmits the electric signals to the detection circuit board through the PCB adapter plate which is respectively in signal connection with the probe set and the detection circuit board; (6) the detection circuit board transmits the electric signal to a test host machine in signal connection, the test host machine compares the electric signal converted from the optical signal received by the light sensing plate and the electric signal converted from the optical signal received by the optical fingerprint identification module with the pre-stored standard electric signal respectively, and the detection of the light sensing performance and the resolution of the optical fingerprint identification module is completed through analysis and judgment.
The invention has the beneficial effects that: optical fingerprint identification module detection device, detect the photosensitive property and the resolution ratio of optical fingerprint identification module, detection efficiency is higher, detection error is less. The light of the optical detection assembly irradiates the light sensing plate through the light sensing through hole, and the light irradiates the light sensing area of the optical fingerprint identification module through the light transmitting through hole; the light sensing plate converts the received optical signal into an electric signal and transmits the electric signal to a detection circuit board in signal connection with the light sensing plate; the optical fingerprint identification module converts the received optical signals into electric signals and transmits the electric signals to the detection circuit board through the PCB adapter plate which is respectively in signal connection with the probe set and the detection circuit board; the detection circuit board conveys the test host computer of signal connection with the signal connection, and the test host computer compares the signal of telecommunication that the light signal that receives the photosheet converts to and the signal of telecommunication that the light signal that optics fingerprint identification module received converts with the standard signal of telecommunication of prestoring respectively, judges through the analysis, does benefit to the detection precision that improves the sensitization performance and the resolution ratio of optics fingerprint identification module. The module detection seat has a simple and practical structure; the module seat can be dismantled with the pedestal and be connected, does benefit to the optics fingerprint identification module that the module seat of change detected different specifications. The light source of buffering subassembly that floats holds in the palm the cover and descends, detects the pressure head and the golden finger contact of optics fingerprint identification module, and pressure spring group is compressed, and the direction section of uide pin descends to direction through-hole downside, because the clearance is great between frustum shape changeover portion and the direction through-hole, the connecting block can carry out the unsteady of XYZ three direction, six degrees of freedom, and the decline impact force of buffering optics detection subassembly's light source support cover just can not produce the yawing force. Buffering the optical detection subassembly of subassembly that floats descends, detects the pressure head and the golden finger contact of optics fingerprint identification module, and pressure spring group is compressed, and the direction section of uide pin descends to direction through-hole downside, because the clearance is great between frustum shape changeover portion and the direction through-hole, the connecting block can carry out the three direction of XYZ, the floating of six degrees of freedom, does benefit to the decline impact force that buffering optical detection subassembly's light source held in the palm the cover and can not produce the yawing force. The extension spring does benefit to under the circumstances of equipment outage suddenly or motor loss of excitation, draws the primary point position back with optics detection subassembly, prevents to detect the seat with the module and collides. The lifting driving device is a cylinder connected with the transverse fixing plate, and the universal part is low in cost. The longitudinal driving device has simple and practical structure and high precision. The detection method of the optical fingerprint identification module detection device can meet the requirements of detecting the photosensitive performance and the resolution of the optical fingerprint identification module, and is high in detection efficiency and small in detection error.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (6)
1. An optical fingerprint identification module detection device, comprising: the base is equipped with transverse fixing plate and through two vertical linear guide and base sliding connection's removal seat, vertical drive arrangement, characterized by, optics fingerprint identification module detection device still include: a plurality of optical detection devices which are arranged in parallel in the transverse direction and are arranged on a detection circuit board at the lower end of the base; the optical detection device includes: the device comprises a light source driving plate arranged at the front end of a transverse fixing plate, a vertical linear guide rail, a lifting seat, a lifting driving device, a buffering floating assembly, an optical detection assembly and a module detection seat, wherein the sliding block is connected with the rear end of the transverse fixing plate; the optical detection assembly includes: the light source support cover is provided with a connecting seat at the upper end, a detection light source connected with the light source support cover, a detection pressure head, a light transmitting through hole and a light sensing through hole which are arranged at the lower end of the light source support cover, and a light sensing plate which covers the lower end of the light sensing through hole and is connected with the light source support cover; the buffering floating assembly includes: the lower end of the floating pressure plate is provided with a through groove and a connecting block connected with the upper end of the connecting seat, a pressure spring group is arranged between the floating pressure plate and the connecting block, and the floating pressure plate is connected with the lower end of the vertical linear guide rail; the upper end of the connecting block is provided with bolt through holes which are communicated with the top surface of the through groove and have the same number as the equal-height bolts, and guide through holes which have the same number as the guide pins and are in one-to-one correspondence; the upper ends of the screw rods of the equal-height bolts penetrate through the bolt through holes in a one-to-one correspondence manner and are connected with the floating pressure plate; the guide pin includes: the diameter of the guide section is matched with that of the guide through hole and penetrates through the guide through hole, the diameter of the connecting section is smaller than that of the guide section, the upper end of the connecting section is connected with the floating pressing plate, and the frustum-shaped transition section is respectively connected with the upper end of the guide section and the lower end of the connecting section; in an initial state, a vertical gap is formed between the lower end of the floating pressure plate and the upper end of the connecting block; the distance between the upper end of the guide section and the top surface of the through groove is smaller than the height of the vertical gap.
2. The optical fingerprint recognition module detecting device of claim 1, wherein: the module detect the seat include: the base body is connected with the base through screws, the upper end of the base body is provided with a containing groove, the probe group is arranged in the base body, the module base is arranged in the containing groove and is detachably connected with the base body, the PCB adapter plate is arranged at one side end of the module base, the module containing cavity is arranged at the upper end of the module base, and the electric through hole is arranged at the bottom surface of the module containing cavity and is opposite to the probe group.
3. The optical fingerprint recognition module detecting device of claim 1, wherein: further comprising: and the two ends of the tension spring are respectively connected with the lifting seat and the floating pressure plate.
4. The optical fingerprint recognition module detecting device of claim 1, 2 or 3, wherein: the lifting driving device is a cylinder connected with the transverse fixing plate; the piston rod of the cylinder is connected with the lower end of the lifting seat.
5. The optical fingerprint recognition module detecting device of claim 1, 2 or 3, wherein: the longitudinal driving device comprises: the device comprises two transmission synchronizing wheels respectively pivoted with a base, a transmission synchronous belt respectively in transmission connection with the two transmission synchronizing wheels, a motor connected with the base, a driving synchronizing wheel connected with an output shaft of the motor, a driven synchronizing wheel coaxially connected with one transmission synchronizing wheel, and a driving synchronous belt respectively in transmission connection with the driving synchronizing wheel and the driven synchronizing wheel; one side of the driving synchronous belt is connected with the movable seat.
6. A detection method of an optical fingerprint identification module detection device, wherein the optical fingerprint identification module detection device is provided with a limit structure of the optical fingerprint identification module detection device of any one of claims 1 to 5; the optical fingerprint identification module is characterized in that (1) the optical fingerprint identification module is placed in a module accommodating cavity of the module detection seat, and a golden finger of the optical fingerprint identification module is positioned in the electric through hole and is opposite to the probe set; (2) the longitudinal driving device drives the movable seat to move, so that the optical detection assembly is positioned above the corresponding module detection seat; (3) a piston rod of a cylinder of the lifting driving device drives a lifting seat to descend, an optical detection assembly is driven to descend through a vertical linear guide rail and a buffering floating assembly, and a detection pressure head is in contact with a golden finger of the optical fingerprint identification module; (4) the pressure spring group of the buffering floating assembly is compressed, the guide section of the guide pin descends to the lower side of the guide through hole, and the connecting block can float in three directions of XYZ and six degrees of freedom due to the gap between the frustum-shaped transition section and the guide through hole, so that the descending impact force of the light source support cover of the optical detection assembly is buffered without generating lateral force until the light source support cover presses the base body of the module detection base, and the golden finger presses the probe group; (5) a detection light source electrically connected with the light source driving board is started, and light irradiates the light sensing board through the light sensing through hole and irradiates the light sensing area of the optical fingerprint identification module through the light transmission through hole; the light sensing plate converts the received optical signal into an electric signal and transmits the electric signal to a detection circuit board in signal connection with the light sensing plate; the optical fingerprint identification module converts the received optical signals into electric signals and transmits the electric signals to the detection circuit board through the PCB adapter plate which is respectively in signal connection with the probe set and the detection circuit board; (6) the detection circuit board transmits the electric signal to a test host machine in signal connection, the test host machine compares the electric signal converted from the optical signal received by the light sensing plate and the electric signal converted from the optical signal received by the optical fingerprint identification module with the pre-stored standard electric signal respectively, and the detection of the light sensing performance and the resolution of the optical fingerprint identification module is completed through analysis and judgment.
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| CN107656162A (en) * | 2017-10-27 | 2018-02-02 | 昆山精讯电子技术有限公司 | A kind of fingerprint recognition module test device |
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| CN108008229A (en) * | 2017-11-03 | 2018-05-08 | 杭州长川科技股份有限公司 | Fingerprint module identification code scanning means and scan method |
| CN108162594A (en) * | 2017-12-10 | 2018-06-15 | 杭州长川科技股份有限公司 | Fingerprint module surveys high code spraying system and surveys high code spraying method |
| CN209015170U (en) * | 2018-10-23 | 2019-06-21 | 杭州长川科技股份有限公司 | Optical finger print identifies module detecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677950A (en) * | 2017-08-28 | 2018-02-09 | 杭州长川科技股份有限公司 | Fingerprint apparatus for testing chip and method of testing |
| CN107656162A (en) * | 2017-10-27 | 2018-02-02 | 昆山精讯电子技术有限公司 | A kind of fingerprint recognition module test device |
| CN108008229A (en) * | 2017-11-03 | 2018-05-08 | 杭州长川科技股份有限公司 | Fingerprint module identification code scanning means and scan method |
| CN108162594A (en) * | 2017-12-10 | 2018-06-15 | 杭州长川科技股份有限公司 | Fingerprint module surveys high code spraying system and surveys high code spraying method |
| CN209015170U (en) * | 2018-10-23 | 2019-06-21 | 杭州长川科技股份有限公司 | Optical finger print identifies module detecting device |
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