CN110765957A - Fingerprint identification device that accuracy is high with dustproof function - Google Patents
Fingerprint identification device that accuracy is high with dustproof function Download PDFInfo
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- CN110765957A CN110765957A CN201911035994.XA CN201911035994A CN110765957A CN 110765957 A CN110765957 A CN 110765957A CN 201911035994 A CN201911035994 A CN 201911035994A CN 110765957 A CN110765957 A CN 110765957A
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- main body
- rod
- disc
- hole
- cleaning
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- 238000004140 cleaning Methods 0.000 claims abstract description 91
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 20
- 230000000712 assembly Effects 0.000 claims abstract description 15
- 238000000429 assembly Methods 0.000 claims abstract description 15
- 230000008093 supporting effect Effects 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 8
- 230000006870 function Effects 0.000 description 20
- 230000000694 effects Effects 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005021 gait Effects 0.000 description 1
- 210000000554 iris Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
- B08B17/04—Preventing deposition of fouling or of dust by using removable coverings
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
Abstract
The invention relates to a fingerprint identification device with dust-proof function and high accuracy, which comprises a main body and an identifier, the main body is in a cuboid shape, the recognizer is arranged at the top of the main body, the top of the main body is provided with a cleaning mechanism and a dustproof mechanism, the cleaning mechanism comprises a cleaning disc, a ball screw bearing, a screw rod, a rotating shaft, a first bearing, a connecting disc, three connecting assemblies and three transmission assemblies, wherein each connecting assembly comprises a ball, a connecting rod, a first spring and a through hole, the dustproof mechanism comprises a dustproof plate, a supporting assembly and a power assembly, this fingerprint identification device that accuracy is high with dustproof function has realized cleaing away the function of impurity on the finger through clean mechanism, avoids impurity influence fingerprint identification's accuracy, moreover, has still realized dirt-proof function through dustproof mechanism, avoids the dust to drop on the recognizer and influence the discernment precision.
Description
Technical Field
The invention relates to the field of biological identification equipment, in particular to a fingerprint identification device with a dustproof function and high accuracy.
Background
The biometric identification technology is that a computer is closely combined with high-tech means such as optics, acoustics, biosensors and the principle of biometrics, and the inherent physiological characteristics (such as fingerprints, face images, irises and the like) and behavior characteristics (such as handwriting, voice, gait and the like) of a human body are utilized to identify the identity of a person, wherein the fingerprint attendance machine is one of biometric identification devices and is one of devices for identifying the identity through fingerprints.
Present fingerprint attendance machine has the dust to drop in the discernment district during the use, and the dust not only can reduce the clean and tidy degree, still can reduce the accuracy of discernment, moreover, when having impurity such as greasy dirt on user's the finger, can reduce fingerprint identification's accuracy equally, influences fingerprint information's collection, has reduced the practicality.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the fingerprint identification device with the dustproof function and high accuracy is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a fingerprint identification device with a dustproof function and high accuracy comprises a main body and an identifier, wherein the main body is in a cuboid shape, the identifier is arranged on the top of the main body, and a cleaning mechanism and a dustproof mechanism are arranged on the top of the main body;
the cleaning mechanism comprises a cleaning disc, a ball screw bearing, a screw rod, a rotating shaft, a first bearing, a connecting disc, three connecting assemblies and three transmission assemblies, wherein the axis of the cleaning disc is perpendicular to the plane of the top of the main body, the screw rod, the rotating shaft and the connecting disc are coaxially arranged with the cleaning disc, the main body is provided with a mounting hole, the rotating shaft penetrates through the mounting hole, the rotating shaft is in sliding connection with the inner wall of the mounting hole, the screw rod is fixed at the bottom end of the rotating shaft, the connecting disc is arranged at the top end of the rotating shaft, the connecting disc is positioned between the cleaning disc and the main body, a gap is arranged between the connecting disc and the cleaning disc, the screw rod is provided with an external thread, the inner ring of the ball screw bearing is matched with the external thread, the ball screw bearing is arranged on the screw rod, the, the outer ring of the first bearing is fixedly connected with the top of the main body, the connecting assemblies are circumferentially and uniformly distributed on one side, close to the main body, of the cleaning disc by taking the axis of the rotating shaft as a center, the cleaning disc is connected with the outer ring of the ball screw bearing through the connecting assemblies, the transmission assemblies correspond to the connecting assemblies one to one, the transmission assemblies are located between the cleaning disc and the connecting disc, and the cleaning disc is connected with the connecting disc through the transmission assemblies;
the connecting assembly comprises a ball, a connecting rod, a first spring and a through hole, the connecting rod is parallel to the rotating shaft, the through hole is formed in the top of the main body, the connecting rod penetrates through the through hole, the connecting rod is connected with the inner wall of the through hole in a sliding mode, the bottom end of the connecting rod is fixedly connected with the outer ring of the ball screw bearing, the ball is fixed to the top end of the connecting rod, an annular groove is formed in one side, close to the main body, of the cleaning disc, the center of the ball is arranged in the annular groove, the ball is matched with and connected with the annular groove in a sliding mode, and the;
the dustproof mechanism comprises a dustproof plate, a supporting assembly and a power assembly, the dustproof plate is perpendicular to the rotating shaft, the dustproof plate is arranged opposite to and attached to the top of the recognizer, and the supporting assembly and the power assembly are arranged between the recognizer and the rotating shaft;
the supporting assembly comprises an auxiliary shaft and a second bearing, the auxiliary shaft is perpendicular to the rotating shaft, the distances between the two ends of the auxiliary shaft and the identifier are equal, the two ends of the auxiliary shaft are fixedly connected with one side, close to the identifier, of the dust guard, the inner ring of the second bearing is installed on the auxiliary shaft, and the outer ring of the second bearing is fixedly connected with the top of the main body;
the power assembly comprises a connecting wire, an elastic wire, a pull rod, an electromagnet and a through hole, the connecting wire and the through hole are both positioned on one side of the auxiliary shaft far away from the recognizer, the through hole is arranged at the top of the main body, one end of the connecting wire is fixed at one side of the dust-proof plate close to the recognizer, the other end of the connecting wire passes through the through hole and is fixed on the pull rod, the connecting wire is connected with the inner wall of the through hole in a sliding way, the pull rod is parallel to the dust guard, the pull rod is fixed on the connecting rod close to the recognizer, the elastic wire is positioned between the recognizer and the auxiliary shaft, one side of the dust guard close to the recognizer is connected with the top of the main body through an elastic wire, the electromagnet is arranged on one side of the pull rod far away from the top of the main body, the electromagnet is fixed on the inner wall of the main body, a gap is formed between the electromagnet and the pull rod, and the pull rod is made of iron.
Preferably, in order to improve the automation degree, a PLC and a contact switch are arranged in the main body, the contact switch is arranged on one side, far away from the top of the main body, of the pull rod, the distance between the contact switch and the pull rod is equal to the distance between the electromagnet and the pull rod, and the contact switch, the electromagnet and the identifier are all electrically connected with the PLC.
As preferred, drive the connection pad for the drive cleaning disc pivoted effect, transmission assembly includes stopper, transfer line, second spring and pilot hole, the transfer line is parallel with the axis of rotation, the pilot hole sets up on the connection pad, the transfer line passes the pilot hole, the inner wall sliding connection of transfer line and pilot hole, the one end of transfer line is fixed on cleaning disc, the other end at the transfer line is fixed to the stopper, the second spring is located between cleaning disc and the connection pad, cleaning disc passes through the second spring and is connected with the connection pad.
Preferably, in order to achieve the effects of buffering and vibration reduction, the limiting block is made of rubber.
Preferably, the screw is coated with a lubricating oil in order to reduce the frictional force between the screw and the ball screw bearing.
Preferably, in order to prolong the service life of the pull rod, the pull rod is provided with an anti-corrosion zinc coating.
Preferably, in order to facilitate the installation of the connecting rod, the connecting rod is provided with a chamfer.
Preferably, the main body is provided with a solar panel for energy saving.
Preferably, in order to increase the friction between the fingers of the user and the cleaning disc, the side of the cleaning disc far away from the main body is provided with anti-skid lines.
Preferably, the connection line is a steel wire rope in order to improve the reliability of the connection line.
The fingerprint identification device with the dustproof function and high accuracy has the advantages that the function of removing impurities on fingers is achieved through the cleaning mechanism, the influence of the impurities on the accuracy of fingerprint identification is avoided, compared with the existing cleaning mechanism, the cleaning mechanism does not need electric power driving, the fingerprint identification device is more environment-friendly and energy-saving, meanwhile, the cleaning mechanism also achieves the function of driving the dustproof plate to rotate, the practicability is higher, the dustproof function is achieved through the dustproof mechanism, the phenomenon that dust falls on an identifier to influence the identification accuracy is avoided, compared with the existing dustproof mechanism, the dustproof mechanism achieves automation, and the practicability is higher.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of a high-precision fingerprint identification device with a dust-proof function according to the present invention;
FIG. 2 is a schematic view of the structure of the cleaning mechanism of the fingerprint recognition device with high precision and dust-proof function of the present invention;
FIG. 3 is a schematic structural diagram of a dust-proof mechanism of the fingerprint identification device with high accuracy and dust-proof function according to the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
in the figure: 1. the solar cleaning device comprises a main body, 2, an identifier, 3, a cleaning disc, 4, a ball screw bearing, 5, a screw rod, 6, a rotating shaft, 7, a first bearing, 8, a connecting disc, 9, a ball, 10, a connecting rod, 11, a first spring, 12, a dust guard, 13, an auxiliary shaft, 14, a second bearing, 15, a connecting wire, 16, an elastic wire, 17, a pull rod, 18, an electromagnet, 19, a contact switch, 20, a limiting block, 21, a transmission rod, 22, a second spring and 23, a solar panel.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1-2, a fingerprint identification device with dust-proof function and high accuracy comprises a main body 1 and an identifier 2, wherein the main body 1 is in a cuboid shape, the identifier 2 is arranged at the top of the main body 1, and a cleaning mechanism and a dust-proof mechanism are arranged at the top of the main body 1;
the cleaning mechanism comprises a cleaning disc 3, a ball screw bearing 4, a screw 5, a rotating shaft 6, a first bearing 7, a connecting disc 8, three connecting assemblies and three transmission assemblies, wherein the axis of the cleaning disc 3 is perpendicular to the plane of the top of a main body 1, the screw 5, the rotating shaft 6 and the connecting disc 8 are coaxially arranged with the cleaning disc 3, a mounting hole is formed in the main body 1, the rotating shaft 6 penetrates through the mounting hole, the rotating shaft 6 is in sliding connection with the inner wall of the mounting hole, the screw 5 is fixed at the bottom end of the rotating shaft 6, the connecting disc 8 is arranged at the top end of the rotating shaft 6, the connecting disc 8 is positioned between the cleaning disc 3 and the main body 1, a gap is formed between the connecting disc 8 and the cleaning disc 3, an external thread is arranged on the screw 5, the inner ring of the ball screw bearing 4 is matched with the external thread, the cleaning device comprises a cleaning disc 3, a ball screw bearing 4, a first bearing 7, a connecting disc 8, a connecting assembly, a connecting disc 8, a cleaning disc 3 and a cleaning disc, wherein the first bearing 7 is located between the connecting disc 8 and a main body 1, an inner ring of the first bearing 7 is installed on a rotating shaft 6, an outer ring of the first bearing 7 is fixedly connected with the top of the main body 1, the connecting assembly is circumferentially and uniformly distributed on one side, close to the main body 1, of the cleaning disc 3 by taking the axis of the rotating shaft 6 as a center, the cleaning disc 3 is connected with the outer ring of the ball screw bearing 4 through the connecting assembly, the transmission assemblies are in one;
the connecting assembly comprises a ball 9, a connecting rod 10, a first spring 11 and a through hole, the connecting rod 10 is parallel to the rotating shaft 6, the through hole is formed in the top of the main body 1, the connecting rod 10 penetrates through the through hole, the connecting rod 10 is connected with the inner wall of the through hole in a sliding mode, the bottom end of the connecting rod 10 is fixedly connected with the outer ring of the ball screw bearing 4, the ball 9 is fixed to the top end of the connecting rod 10, an annular groove is formed in one side, close to the main body 1, of the cleaning disc 3, the center of the ball 9 is arranged in the annular groove, the ball 9 is matched with and connected with the annular groove in a sliding mode, and the ball diameter;
the user places a finger on the cleaning disc 3 and presses it downward, so that the cleaning disc 3 drives the ball screw bearing 4 to move on the screw 5 through the connecting rod 10, and the first spring 11 is compressed, because the ball screw bearing 4 converts the rotary motion into the linear motion, or the linear motion is converted into the rotary motion, so that the screw rod 5 rotates and drives the rotating shaft 6 to rotate under the supporting action of the first bearing 7, the rotating shaft 6 rotates to drive the connecting disc 8 to rotate, the connecting disc 8 rotates to drive the cleaning disc 3 to rotate through the transmission assembly, the locking can be avoided through the matching between the balls 9 and the annular groove, thereby realizing the functions of moving the cleaning disc 3 towards the main body 1 and simultaneously realizing rotation, removing impurities on fingers by the rotation of the cleaning disc 3, when the finger is removed from the cleaning tray 3, the cleaning tray 3 is returned by the elastic force of the first spring 11 to the cleaning tray 3.
As shown in fig. 3-4, the dust-proof mechanism includes a dust-proof plate 12, a support assembly and a power assembly, the dust-proof plate 12 is perpendicular to the rotating shaft 6, the dust-proof plate 12 is opposite to and attached to the top of the identifier 2, and the support assembly and the power assembly are both arranged between the identifier 2 and the rotating shaft 6;
the support assembly comprises an auxiliary shaft 13 and a second bearing 14, the auxiliary shaft 13 is perpendicular to the rotating shaft 6, the distances between two ends of the auxiliary shaft 13 and the identifier 2 are equal, and the two ends of the auxiliary shaft 13 are fixedly connected with one side, close to the identifier 2, of the dust guard 12, the inner ring of the second bearing 14 is installed on the auxiliary shaft 13, and the outer ring of the second bearing 14 is fixedly connected with the top of the main body 1;
the power assembly comprises a connecting wire 15, an elastic wire, a pull rod 17, an electromagnet 18 and a through hole, wherein the connecting wire 15 and the through hole are both positioned on one side of the auxiliary shaft 13, which is far away from the recognizer 2, the through hole is arranged at the top of the main body 1, one end of the connecting wire 15 is fixed on one side of the dust guard 12, which is close to the recognizer 2, the other end of the connecting wire 15 penetrates through the through hole and is fixed on the pull rod 17, the connecting wire 15 is in sliding connection with the inner wall of the through hole, the pull rod 17 is parallel to the dust guard 12, the pull rod 17 is fixed on the connecting rod 10, which is close to the recognizer 2, the elastic wire is positioned between the recognizer 2 and the auxiliary shaft 13, one side of the dust guard 12, which is close to the recognizer 2, is connected with the top of the main body 1 through the elastic wire, the electromagnet 18 is arranged on one side of the pull rod 17, the pull rod 17 is made of iron.
When a finger is pressed on the cleaning disk 3, the connecting rod 10 is moved, the movement of the moving rod pulls the connecting wire 15 through the pull rod 17, so that the dust-proof plate 12 rotates around the axis of the auxiliary shaft 13 and the elastic wire is stretched, and the effect of supporting the auxiliary shaft 13 is achieved through the second bearing 14, at this time, the electromagnet 18 is powered on, so that an attractive force is generated between the iron pull rod 17 and the electromagnet 18, the pull rod 17 is attracted to the electromagnet 18, when the finger is removed from the cleaning disk 3, the attraction force between the electromagnet 18 and the pull rod 17 is greater than the sum of the elastic forces of the first springs 11, so that the dust-proof plate 12 is reset under the elastic action of the elastic wire while the finger is removed from the cleaning disk 3, at this time, the finger after being cleaned is pressed on the recognizer 2 to realize fingerprint recognition, and then the electromagnet 18 is powered off, the dust guard 12 resets under the elastic action of elastic line, and cleaning disc 3 makes cleaning disc 3 reset under the elastic action of first spring 11 simultaneously, makes dust guard 12 cover recognizer 2, avoids the dust to drop on recognizer 2 and influence the discernment precision.
Preferably, in order to improve the degree of automation, a PLC and a contact switch 19 are arranged in the main body 1, the contact switch 19 is arranged on one side of the pull rod 17 far away from the top of the main body 1, the distance between the contact switch 19 and the pull rod 17 is equal to the distance between the electromagnet 18 and the pull rod 17, the contact switch 19, the electromagnet 18 and the identifier 2 are all electrically connected with the PLC, the contact switch 19 abuts against the contact switch 19 simultaneously when the pull rod 17 abuts against the electromagnet 18, at the moment, the contact switch 19 sends a signal to the PLC, the PLC controls the electromagnet 18 to be electrified, when the identifier 2 detects fingerprint information, the PLC disconnects the electromagnet 18 after a set time, and a finger can move away from the identifier 2 within the set time, so that the degree of automation is improved.
PLC, i.e. programmable logic controller, which uses a programmable memory for storing program therein, executing logic operation, sequence control, timing, counting and arithmetic operation, and controlling various types of mechanical or production processes by digital or analog input and output, is essentially a computer dedicated for industrial control, whose hardware structure is basically the same as that of a microcomputer, and is generally used for data processing and instruction receiving and output, and for realizing central control
As preferred, in order to drive connection pad 8 and drive cleaning disc 3 pivoted effect, transmission assembly includes stopper 20, transfer line 21, second spring 22 and pilot hole, transfer line 21 is parallel with axis of rotation 6, the pilot hole sets up on connection pad 8, transfer line 21 passes the pilot hole, transfer line 21 and the inner wall sliding connection of pilot hole, the one end of transfer line 21 is fixed on cleaning disc 3, stopper 20 is fixed at the other end of transfer line 21, second spring 22 is located between cleaning disc 3 and the connection pad 8, cleaning disc 3 is connected with connection pad 8 through second spring 22.
The rotation of connection pad 8 passes through transfer line 21 and drives cleaning disc 3 and rotate, and when cleaning disc 3 moved towards being close to main part 1 direction, made transfer line 21 remove in the pilot hole simultaneously to make the second spring 22 compress, avoid the card to die, when the finger from cleaning disc 3 back of moving away, made the distance recovery between cleaning disc 3 and connection pad 8 under the elastic action of second spring 22.
Preferably, in order to achieve the effects of buffering and vibration reduction, the material of the limiting block 20 is rubber.
The rubber texture is comparatively soft, can reduce stopper 20 and connection pad 8 and support the impact force when leaning on, has played the effect of buffering and damping.
Preferably, the screw 5 is coated with a lubricating oil in order to reduce the frictional force between the screw 5 and the ball bearing 4.
The lubricating oil has the function of reducing the friction force between the screw rod 5 and the ball screw bearing 4 and improving the smoothness of the rotation of the screw rod 5.
Preferably, in order to prolong the service life of the pull rod 17, the pull rod 17 is provided with an anti-corrosion zinc coating.
The function of the anti-corrosion zinc coating is to improve the rust-proof capability of the pull rod 17 and prolong the service life of the pull rod 17.
Preferably, the connecting rod 10 is chamfered to facilitate mounting of the connecting rod 10.
The chamfer serves to reduce the diameter of the connecting rod 10 when it passes through the through hole, and has an effect of facilitating installation.
Preferably, a solar panel 23 is provided on the main body 1 for energy saving.
Preferably, in order to increase the friction between the fingers of the user and the cleaning disc 3, the side of the cleaning disc 3 away from the main body 1 is provided with anti-slip lines.
The anti-slip threads function to increase the friction between the user's fingers and the cleaning plate 3, so that the cleaning effect can be improved.
Preferably, the connection line 15 is a wire rope in order to improve the reliability of the connection line 15.
The steel wire rope has the characteristics of high strength, difficulty in breaking and the like, so that the reliability of the connecting wire 15 can be improved.
During the use of the device, a user places fingers on the cleaning disc 3 and presses downwards, so that the cleaning disc 3 drives the ball screw bearing 4 to move on the screw rod 5 through the connecting rod 10, and the first spring 11 is compressed, because the ball screw bearing 4 is a bearing which converts the rotary motion into the linear motion or converts the linear motion into the rotary motion, the screw rod 5 rotates, and drives the rotating shaft 6 to rotate under the supporting action of the first bearing 7, the rotating shaft 6 rotates to drive the connecting disc 8 to rotate, the connecting disc 8 rotates to drive the cleaning disc 3 to rotate through the transmission rod 21, and when the cleaning disc 3 moves towards the direction close to the main body 1, the transmission rod 21 moves in the assembling hole, and the second spring 22 is compressed to avoid the jamming, and meanwhile, the moving rod moves to pull the connecting wire 15 through the pull rod 17, so that the dust guard 12 rotates around the axis of the auxiliary shaft 13, and the elastic thread is stretched, wherein the effect of supporting the auxiliary shaft 13 is achieved through the second bearing 14, at the moment, the electromagnet 18 is electrified, so that the attraction force between the iron pull rod 17 and the electromagnet 18 is generated, the pull rod 17 is adsorbed on the electromagnet 18, when the finger is removed from the cleaning disc 3, the adsorption force between the electromagnet 18 and the pull rod 17 is larger than the sum of the elastic force of each first spring 11, then, the finger is removed from the cleaning disc 3 and placed on the recognizer 2 to realize fingerprint recognition, the distance between the cleaning disc 3 and the connecting disc 8 is recovered under the elastic action of the second spring 22, when the finger is removed from the recognizer 2, the electromagnet 18 is powered off, the dust-proof plate 12 is reset under the elastic action of the elastic thread, and simultaneously, the cleaning disc 3 is reset under the elastic action of the first spring 11, so that the dust-proof plate 12 covers the recognizer 2, the dust is prevented from falling on the identifier 2 to affect the identification accuracy.
Compared with the prior art, this fingerprint identification device that accuracy is high with dustproof function has realized cleaing away the function of impurity on the finger through clean mechanism, avoid impurity influence fingerprint identification's accuracy, compare with current clean mechanism, this clean mechanism need not electric drive, environmental protection and energy saving more, simultaneously, this clean mechanism has still realized the function of drive dust guard 12 pivoted, the practicality is stronger, moreover, dustproof function has still been realized through dustproof mechanism, avoid the dust to drop on recognizer 2 and influence the discernment precision, compare with current dustproof mechanism, this dustproof mechanism has realized automation, the practicality is stronger.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A fingerprint identification device with a dustproof function and high accuracy comprises a main body (1) and an identifier (2), wherein the main body (1) is in a cuboid shape, and the identifier (2) is arranged at the top of the main body (1), and is characterized in that a cleaning mechanism and a dustproof mechanism are arranged at the top of the main body (1);
the cleaning mechanism comprises a cleaning disc (3), a ball screw bearing (4), a screw rod (5), a rotating shaft (6), a first bearing (7), a connecting disc (8), three connecting assemblies and three transmission assemblies, wherein the axis of the cleaning disc (3) is perpendicular to the plane of the top of a main body (1), the screw rod (5), the rotating shaft (6) and the connecting disc (8) are coaxially arranged with the cleaning disc (3), a mounting hole is formed in the main body (1), the rotating shaft (6) penetrates through the mounting hole, the rotating shaft (6) is in sliding connection with the inner wall of the mounting hole, the screw rod (5) is fixed at the bottom end of the rotating shaft (6), the connecting disc (8) is installed at the top end of the rotating shaft (6), the connecting disc (8) is located between the cleaning disc (3) and the main body (1), and a gap is formed between the connecting disc (8) and the cleaning disc (3), the screw rod (5) is provided with an external thread, the inner ring of the ball screw bearing (4) is matched with the external thread, the ball screw bearing (4) is arranged on the screw rod (5), the first bearing (7) is positioned between the connecting disc (8) and the main body (1), the inner ring of the first bearing (7) is arranged on the rotating shaft (6), the outer ring of the first bearing (7) is fixedly connected with the top of the main body (1), the connecting components are circumferentially and uniformly distributed on one side of the cleaning disc (3) close to the main body (1) by taking the axis of the rotating shaft (6) as a center, the cleaning disc (3) is connected with the outer ring of the ball screw bearing (4) through a connecting component, the transmission components correspond to the connecting components one by one, the transmission components are positioned between the cleaning disc (3) and the connecting disc (8), the cleaning disc (3) is connected with the connecting disc (8) through a transmission assembly;
the connecting assembly comprises a ball (9), a connecting rod (10), a first spring (11) and a through hole, the connecting rod (10) is parallel to the rotating shaft (6), the through hole is formed in the top of the main body (1), the connecting rod (10) penetrates through the through hole, the connecting rod (10) is in sliding connection with the inner wall of the through hole, the bottom end of the connecting rod (10) is fixedly connected with the outer ring of the ball screw bearing (4), the ball (9) is fixed to the top end of the connecting rod (10), an annular groove is formed in one side, close to the main body (1), of the cleaning disc (3), the center of the ball (9) is arranged in the annular groove, the ball (9) is matched with and in sliding connection with the annular groove, and the diameter of the ball (9) is larger than the width of;
the dustproof mechanism comprises a dustproof plate (12), a supporting assembly and a power assembly, the dustproof plate (12) is perpendicular to the rotating shaft (6), the dustproof plate (12) is arranged opposite to and attached to the top of the recognizer (2), and the supporting assembly and the power assembly are arranged between the recognizer (2) and the rotating shaft (6);
the supporting assembly comprises an auxiliary shaft (13) and a second bearing (14), the auxiliary shaft (13) is perpendicular to the rotating shaft (6), the distances between the two ends of the auxiliary shaft (13) and the identifier (2) are equal, the two ends of the auxiliary shaft (13) are fixedly connected with one side, close to the identifier (2), of the dust guard (12), the inner ring of the second bearing (14) is installed on the auxiliary shaft (13), and the outer ring of the second bearing (14) is fixedly connected with the top of the main body (1);
the power assembly comprises a connecting wire (15), an elastic wire, a pull rod (17), an electromagnet (18) and a through hole, wherein the connecting wire (15) and the through hole are both positioned on one side of an auxiliary shaft (13) far away from the recognizer (2), the through hole is arranged at the top of the main body (1), one end of the connecting wire (15) is fixed on one side, close to the recognizer (2), of the dustproof plate (12), the other end of the connecting wire (15) penetrates through the through hole to be fixed on the pull rod (17), the connecting wire (15) is connected with the inner wall of the through hole in a sliding manner, the pull rod (17) is parallel to the dustproof plate (12), the pull rod (17) is fixed on a connecting rod (10) close to the recognizer (2), the elastic wire is positioned between the recognizer (2) and the auxiliary shaft (13), one side, close to the recognizer (2), of the dustproof plate (12) is connected with the top of the main body (1) through the elastic wire, the electromagnet (18) is arranged on one side, far away from the top of the main body (1), of the pull rod (17), the electromagnet (18) is fixed on the inner wall of the main body (1) and a gap is formed between the electromagnet and the pull rod (17), and the pull rod (17) is made of iron.
2. The fingerprint recognition device with the dust-proof function and high accuracy according to claim 1, wherein a PLC and a contact switch (19) are provided in the main body (1), the contact switch (19) is provided on a side of the pull rod (17) away from the top of the main body (1), a distance between the contact switch (19) and the pull rod (17) is equal to a distance between the electromagnet (18) and the pull rod (17), and the contact switch (19), the electromagnet (18) and the recognizer (2) are electrically connected to the PLC.
3. The fingerprint recognition device with the dust-proof function and the high accuracy as claimed in claim 1, wherein the transmission assembly comprises a stopper (20), a transmission rod (21), a second spring (22) and an assembly hole, the transmission rod (21) is parallel to the rotation shaft (6), the assembly hole is formed on the connection pad (8), the transmission rod (21) passes through the assembly hole, the transmission rod (21) is slidably connected with the inner wall of the assembly hole, one end of the transmission rod (21) is fixed on the cleaning plate (3), the stopper (20) is fixed at the other end of the transmission rod (21), the second spring (22) is located between the cleaning plate (3) and the connection pad (8), and the cleaning plate (3) is connected with the connection pad (8) through the second spring (22).
4. The fingerprint recognition device with dust-proof function and high accuracy as claimed in claim 3, wherein the material of said stopper (20) is rubber.
5. The fingerprint recognition device with high accuracy and dustproof function according to claim 1, wherein the screw rod (5) is coated with a lubricant.
6. The fingerprint recognition device with high accuracy and dustproof function according to claim 1, wherein said pull rod (17) is provided with an anti-corrosion zinc coating.
7. The fingerprint recognition device with high accuracy and dustproof function according to claim 1, wherein said connection rod (10) is provided with a chamfer.
8. The fingerprint recognition device with dust-proof function and high accuracy as claimed in claim 1, wherein said main body (1) is provided with a solar panel (23).
9. The fingerprint recognition device with dust-proof function and high accuracy according to claim 1, characterized in that the cleaning disc (3) is provided with anti-slip lines on the side away from the main body (1).
10. The fingerprint recognition device with dust-proof function of claim 1, wherein the connection line (15) is a wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035994.XA CN110765957A (en) | 2019-10-29 | 2019-10-29 | Fingerprint identification device that accuracy is high with dustproof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911035994.XA CN110765957A (en) | 2019-10-29 | 2019-10-29 | Fingerprint identification device that accuracy is high with dustproof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110765957A true CN110765957A (en) | 2020-02-07 |
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ID=69334198
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911035994.XA Withdrawn CN110765957A (en) | 2019-10-29 | 2019-10-29 | Fingerprint identification device that accuracy is high with dustproof function |
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| Country | Link |
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| CN (1) | CN110765957A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364876A (en) * | 2020-04-22 | 2020-07-03 | 深圳市俊达通办公智能科技有限公司 | Safe case with cleaning function |
| CN112017315A (en) * | 2020-08-31 | 2020-12-01 | 段绍军 | Fingerprint identification device of external closed protective structure based on internet of things equipment |
| CN112241094A (en) * | 2020-08-28 | 2021-01-19 | 南京兰林智慧建筑科技有限公司 | Office unit property management and control system based on big data platform |
| CN112318236A (en) * | 2020-10-20 | 2021-02-05 | 高建文 | High-precision grinding equipment for machining inner wall of long pipe fitting |
| CN114371786A (en) * | 2021-11-26 | 2022-04-19 | 国网辽宁省电力有限公司大连供电公司 | Computer equipment safety device |
-
2019
- 2019-10-29 CN CN201911035994.XA patent/CN110765957A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364876A (en) * | 2020-04-22 | 2020-07-03 | 深圳市俊达通办公智能科技有限公司 | Safe case with cleaning function |
| CN112241094A (en) * | 2020-08-28 | 2021-01-19 | 南京兰林智慧建筑科技有限公司 | Office unit property management and control system based on big data platform |
| CN112017315A (en) * | 2020-08-31 | 2020-12-01 | 段绍军 | Fingerprint identification device of external closed protective structure based on internet of things equipment |
| CN112017315B (en) * | 2020-08-31 | 2021-04-13 | 深圳智多豚物联技术有限公司 | Fingerprint identification device of external closed protective structure based on internet of things equipment |
| CN112318236A (en) * | 2020-10-20 | 2021-02-05 | 高建文 | High-precision grinding equipment for machining inner wall of long pipe fitting |
| CN114371786A (en) * | 2021-11-26 | 2022-04-19 | 国网辽宁省电力有限公司大连供电公司 | Computer equipment safety device |
| CN114371786B (en) * | 2021-11-26 | 2024-04-12 | 国网辽宁省电力有限公司大连供电公司 | Computer equipment safety device |
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