Non-contact cadaver fingerprint acquisition device

Abstract

The present invention provides a non-contact cadaver fingerprint acquisition device, comprising a main body mechanism and a protective mechanism. The main body mechanism comprises a mounting shell, a mounting seat and a main acquisition head, an annular guide rail being mounted at one side of the interior of the mounting shell, one side of the mounting seat being fixedly connected to a movable end of the annular guide rail, the main acquisition head being mounted at one side of the mounting seat, and auxiliary acquisition heads being equidistantly distributed and mounted at one side of the mounting seat. The protective mechanism comprises a light shield, the light shield having a threaded connection with the mounting shell, and anti-slip grooves being equidistantly distributed and provided at one side of the light shield. The present invention, by means of the main acquisition head performing initial acquisition of fingerprint information, and by means of the auxiliary acquisition heads performing secondary acquisition of fingerprint information at different angles, prevents errors in acquisition results due to differences in acquisition angles, improving the accuracy of fingerprint acquisition. Moreover, a driving motor is provided to cooperate with a second gear and a first gear to drive the mounting base to rotate, so as to facilitate multi-angle acquisition of fingerprint information as needed.

Description

Non-contact corpse fingerprint collection equipment Technical Field

[0001] The present invention relates to a fingerprint collection device, in particular to a contactless corpse fingerprint collection device, belonging to the technical field of fingerprint collection. Background Art

[0002] Fingerprint recognition is the process of classifying and comparing the fingerprints of the identified object to make a judgment. As one of the biological feature recognition technologies, fingerprint recognition technology has gradually matured in the new century and has entered the field of human production and life. Fingerprint recognition technology is one of many biometric recognition technologies. The so-called biometric recognition technology refers to the use of the inherent physiological or behavioral characteristics of the human body to identify an individual. Due to the advantages of convenience and security of biometric recognition, biometric recognition technology has broad application prospects in the fields of identity authentication and network security. Available biometric recognition technologies include fingerprints, faces, voiceprints, irises, etc. Fingerprints are the most widely used among them. In terms of fingerprint recognition algorithms, the initial research was on fingerprint classification technology to improve the efficiency of fingerprint file retrieval. The current mainstream fingerprint recognition algorithms are based on detailed features such as the endpoints and bifurcation points of fingerprint ridges. With the application of fingerprint recognition technology in mobile devices, the size of fingerprint collection chips has become increasingly miniaturized. Recognition algorithms based on three-level features such as sweat pores and ridge shape have received increasing attention. In terms of fingerprint collection technology, the first method to appear was the ink printing method. The ink-printed fingerprint card is digitized by scanning for storage and subsequent processing.

[0003] A Chinese patent application (CN202120299802.2) discloses a contactless three-dimensional fingerprint collection device, which monitors the position of the finger through a position sensor and transmits the position information to a controller. The controller drives the electric pan-tilt head to make a movement to align the finger, and then the image acquisition device reads the fingerprint pattern to form a three-dimensional image to complete the fingerprint collection. Therefore, the finger only needs to be inserted between the cover and the shell to collect the fingerprint, realizing contactless fingerprint collection, and can accurately collect fingerprints of fingers at different positions, improve accuracy, and improve hygiene and safety. However, when used, this application relies on only a single image acquisition device to read the fingerprint pattern, which is prone to errors in the collection results due to the collection angle and light shadows, and the collection accuracy is low;

[0004] In order to solve the above technical problems, a non-contact corpse fingerprint collection device is proposed. Summary of the Invention

[0005] In view of this, the present invention provides a non-contact corpse fingerprint collection device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the present invention is achieved as follows: a non-contact corpse fingerprint collection device includes a main body mechanism and a protective mechanism;

[0007] The main body mechanism includes a mounting shell, a mounting base, and a main collection head. An annular guide rail is installed on one side of the interior of the mounting shell. One side of the mounting base is fixedly connected to the movable end of the annular guide rail. The main collection head is installed on one side of the mounting base. Auxiliary collection heads are evenly distributed and installed on one side of the mounting base. A fingerprint recognition chip and a processor are respectively installed on one side of the interior of the mounting shell.

[0008] The protection mechanism includes a light shield, which is threadedly connected to the mounting shell, and one side of the light shield is provided with anti-slip grooves distributed at equal intervals.

[0009] By adopting the above technical solution, a main collection head is set to cooperate with the auxiliary collection head to collect and identify fingerprints multiple times, and the collection angles are different, which is convenient for fingerprint completion and improves the collection accuracy. A light shield is set to provide light shielding protection for the main collection head and the auxiliary collection head when the ambient light cannot be used for normal collection.

[0010] Further preferably, a protective sleeve is provided on one side of the mounting seat.

[0011] By adopting the above technical solution, a protective cover is provided to protect the main collecting head and the auxiliary collecting head, thereby preventing dust from adhering to the main collecting head and the auxiliary collecting head when the head is idle.

[0012] Further preferably, a lighting lamp group is installed on one side of the interior of the light shield.

[0013] By adopting the above technical solution, a lighting lamp group is provided to facilitate lighting the collection object in special environments.

[0014] Further preferably, a battery compartment is installed on one side of the mounting shell, a power supply is installed inside the battery compartment, and a battery cover is installed on one side of the mounting shell.

[0015] By adopting the above technical solution, a power supply is provided to power the acquisition device, and a battery cover is provided to facilitate maintenance of the power supply.

[0016] Further preferably, laser lights are installed at equal intervals on one side of the mounting base.

[0017] By adopting the above technical solution, a laser light is set to indicate the effective collection range of the main collection head, which makes it easier for users to confirm the effective collection range.

[0018] Further preferably, a driving motor is installed on one side of the interior of the mounting shell, a second gear is installed on the output shaft of the driving motor, a first gear is fixedly connected to one side of the mounting seat, and the first gear is meshed with the second gear.

[0019] By adopting the above technical solution, a driving motor is provided to cooperate with the second gear and the first gear to drive the mounting base to rotate, so that the auxiliary collection head can collect information at various angles.

[0020] Further preferably, a side baffle is hinged on one side of the sunshade.

[0021] By adopting the above technical solution, the side baffles are provided to provide space for the collected fingers when needed.

[0022] The embodiment of the present invention adopts the above technical solution, which has the following advantages:

[0023] First, the present invention uses the main collection head to perform preliminary collection of fingerprint information, and uses the auxiliary collection head to perform secondary collection of fingerprint information at different angles, thereby preventing errors in the collection results due to differences in collection angles and improving the accuracy of fingerprint collection. A drive motor is provided to cooperate with the second gear and the first gear to drive the mounting base to rotate, facilitating multi-angle collection of fingerprint information as needed;

[0024] 2. The present invention sets a laser light to facilitate confirmation of the effective collection area of ​​the main collection head before collection, thereby preventing the collection angle deviation from being too large and affecting the fingerprint information imaging effect.

[0025] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] FIG1 is a structural diagram of the present invention;

[0028] FIG2 is a diagram showing the installation structure of the battery cover of the present invention;

[0029] FIG3 is a structural diagram of the mounting base of the present invention;

[0030] FIG4 is a diagram showing the connection structure of the mounting base in the present invention;

[0031] FIG5 is a partial cross-sectional structural diagram of the mounting shell of the present invention.

[0032] Figure numerals: 10, main body; 11, mounting shell; 12, battery cover; 13, protective cover; 14, battery compartment; 15, power supply; 16, mounting base; 17, auxiliary acquisition head; 18, main acquisition head; 19, laser light; 20, protective mechanism; 21, light shield; 22, side baffle; 23, lighting lamp group; 24, anti-slip groove; 31, annular guide rail; 32, first gear; 33, second gear; 34, drive motor; 35, fingerprint recognition chip; 36, processor. DETAILED DESCRIPTION

[0033] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0034] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] As shown in Figures 1-5, an embodiment of the present invention provides a non-contact corpse fingerprint collection device, which is composed of a main body mechanism 10 and a protection mechanism 20.

[0036] The main body mechanism 10 includes a mounting shell 11, a mounting base 16, a main collection head 18 and an auxiliary collection head 17. An annular guide rail 31 is installed on one side of the inner side of the mounting shell 11. The mounting base 16 is rotatably mounted on one side of the inner side of the mounting shell 11 through the annular guide rail 31. A drive motor 34 is installed on one side of the inner side of the mounting shell 11. The output shaft of the drive motor 34 is installed with a second gear 33. A first gear 32 is fixedly connected to one side of the mounting base 16. The first gear 32 is meshed with the second gear 33, so that the drive motor 34 can drive the second gear 33 and the mounting base 16 to rotate through the first gear 32, which is convenient for operation. The position of the auxiliary acquisition head 17 is adjusted, and the main acquisition head 18 is installed on one side of the mounting base 16. The main acquisition head 18 is an optical scanning device for collecting fingerprint information without contact. The auxiliary acquisition heads 17 are installed at equal intervals on the inclined surface of the mounting base 16 to perform secondary collection at blind spots where the main acquisition head 18 cannot collect information normally, thereby improving the fingerprint collection accuracy. A fingerprint recognition chip 35 and a processor 36 are respectively installed on one side of the interior of the mounting shell 11. The processor 36 uses the information obtained by the auxiliary acquisition head 17 and the main acquisition head 18 to cooperate with the fingerprint recognition chip 35 to identify and complete the fingerprint information.

[0037] In one embodiment, in order to prevent the main collection head 18 and the auxiliary collection head 17 from being damaged or dirty, a protective cover 13 is provided on one side of the mounting base 16 .

[0038] In one embodiment, in order to facilitate power supply to the electrical components inside the mounting shell 11 , a battery compartment 14 is installed on one side of the mounting shell 11 , a power supply 15 is installed inside the battery compartment 14 , and a battery cover 12 is installed on one side of the mounting shell 11 .

[0039] In one embodiment, in order to facilitate confirmation of the effective acquisition range of the main acquisition head 18 before acquisition and to complete rapid calibration of the effective acquisition range and the fingerprint position, laser lamps 19 are evenly distributed and installed on one side of the mounting base 16.

[0040] The protective mechanism 20 includes a light shield 21 and a side baffle 22. The light shield 21 is threadedly connected to the mounting shell 11. The usable length of the light shield 21 can be adjusted as needed. In order to facilitate the rotation of the light shield 21, anti-slip grooves 24 are evenly distributed on one side of the light shield 21. The side baffle 22 is hinged to the light shield 21. The side baffle 22 can be opened when needed to provide a placement space for the collected fingers. A torsion spring is installed at the hinge between the side baffle 22 and the light shield 21 to reset it after the side baffle 22 moves.

[0041] In one embodiment, in order to prevent the light shield 21 from being too dark in some environments and causing abnormal data collection, a lighting lamp assembly 23 is installed on one side of the interior of the light shield 21 .

[0042] When the present invention is in operation: the protective cover 13 is removed, and whether to use the light shield 21 is selected according to the ambient light conditions. When using the light shield 21, the mounting shell 11 is held in the hand, and the light shield 21 is rotated in conjunction with the anti-slip groove 24. The use length of the light shield 21 is adjusted according to the fingerprint collection requirements so that the light shield 21 blocks the fingerprint collection area. If the finger is affected during the blocking, the side baffle 22 is moved to provide a placement space for the finger. The effective collection range of the main collection head 18 is confirmed by the laser light 19, and the effective collection range is aligned with the finger to be collected. The laser light 19 is turned off, and the main collection head 18 is used for the initial collection, and the auxiliary collection head 17 is used for the secondary collection of fingerprint information. The second gear 33 is driven to rotate by the driving motor 34, and the second gear 33 cooperates with the first gear 32 to drive the mounting base 16 to rotate, and the position of the auxiliary collection head 17 is adjusted. Multiple collections are performed by the auxiliary collection head 17, and the collection results are identified and processed by the processor 36 in conjunction with the fingerprint recognition chip 35.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications and substitutions within the technical scope disclosed in the present invention, and such modifications and substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. Non-contact corpse fingerprint collection device, characterized by: It comprises a main body mechanism (10) and a protection mechanism (20); The main body mechanism (10) comprises a mounting shell (11), a mounting seat (16) and a main acquisition head (18); an annular guide rail (31) is mounted on one side of the interior of the mounting shell (11); one side of the mounting seat (16) is fixedly connected to the movable end of the annular guide rail (31); the main acquisition head (18) is mounted on one side of the mounting seat (16); auxiliary acquisition heads (17) are mounted at equal intervals on one side of the mounting seat (16); and a fingerprint recognition chip (35) and a processor (36) are respectively mounted on one side of the interior of the mounting shell (11); The protection mechanism (20) comprises a light shield (21), the light shield (21) is threadedly connected to the mounting shell (11), and anti-slip grooves (24) are evenly distributed on one side of the light shield (21).

2. The non-contact corpse fingerprint collection device according to claim 1, characterized in that: A protective sleeve (13) is sleeved on one side of the mounting seat (16).

3. The non-contact corpse fingerprint collection device according to claim 1, characterized in that: A lighting lamp assembly (23) is installed on one side of the interior of the light shield (21).

4. The non-contact corpse fingerprint collection device according to claim 1, characterized in that: A battery compartment (14) is installed on one side of the installation shell (11), a power source (15) is installed inside the battery compartment (14), and a battery cover (12) is installed on one side of the installation shell (11).

5. The non-contact corpse fingerprint collection device according to claim 1, characterized in that: Laser lamps (19) are installed at equal intervals on one side of the mounting seat (16).

6. The non-contact corpse fingerprint collection device according to claim 1, characterized in that: A driving motor (34) is installed on one side of the interior of the mounting shell (11), and a second gear (33) is installed on the output shaft of the driving motor (34). A first gear (32) is fixedly connected to one side of the mounting seat (16), and the first gear (32) is meshed with the second gear (33).

7. The non-contact corpse fingerprint collection device according to claim 1, characterized in that: A side baffle (22) is hingedly connected to one side of the light shield (21).

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