CN211236938U - Fingerprint identification module with ultraviolet ray disinfection function - Google Patents
Fingerprint identification module with ultraviolet ray disinfection function Download PDFInfo
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- CN211236938U CN211236938U CN202020342039.2U CN202020342039U CN211236938U CN 211236938 U CN211236938 U CN 211236938U CN 202020342039 U CN202020342039 U CN 202020342039U CN 211236938 U CN211236938 U CN 211236938U
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 28
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- 239000002184 metal Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001954 sterilising effect Effects 0.000 abstract description 3
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- 238000010586 diagram Methods 0.000 description 9
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Abstract
The utility model relates to a fingerprint identification module with ultraviolet ray disinfection function, include: flexible circuit board, even aureole, support and enclosing cover. The utility model has the advantages that: the instruction light that sees through is used for the operating condition of user's suggestion module, and the ultraviolet that sees through carries out disinfection treatment to fingerprint sensor's surface. Because the directions of the ultraviolet light source and the fingerprint sensor are opposite, and a larger light-homogenizing space is arranged relative to the light source, the finally emergent light is more uniform, and the ultraviolet sterilization effect is improved; this fingerprint module is through with fingerprint sensor, instruct light source, ultraviolet light source, compare the range upon range of setting of identification circuit and in vertical space, has reduced the horizontal area of fingerprint module greatly, has realized that the function integration of ultraviolet disinfection is in fingerprint identification module, provides the miniaturized design of the fingerprint identification module who instructs the function simultaneously, makes its range of application more extensive.
Description
Technical Field
The utility model relates to a fingerprint identification technical field, more specifically say that it relates to a fingerprint identification module with ultraviolet ray disinfection function.
Background
With the improvement of living standard of people, the fingerprint door lock is accepted by more and more consumers. Fingerprint door locks have become the first choice for users to change locks and purchase locks. The fingerprint identification module is responsible for collecting and identifying fingerprints of users and is a core component of the fingerprint door lock. At present, almost all fingerprint identification modules adopt a contact type mode to collect fingerprints. That is to say, the user need press the finger of oneself and carry out the fingerprint collection back on fingerprint module's collector surface, and fingerprint sampler just can acquire user's fingerprint information to carry out subsequent comparison discernment work. Because human fingers often contact various public environments, the fingers are easily infected with pathogens such as various bacteria, viruses and the like, and the finger print collector is easily polluted. In addition, the fingerprint collector is exposed outside, sweat and grease of a human body are easy to remain, and the environment is easy to cause breeding of pathogens such as bacteria and the like to cause cross infection.
The ultraviolet ray with the wavelength of 270nm has good sterilization and disinfection functions, and the short-wave high-energy ultraviolet ray destroys DNA of pathogens to lose activity and infection capacity. According to related researches, most pathogens can lose activity after being exposed to ultraviolet rays with certain intensity for about 0.3 second on average. Ultraviolet disinfection is a good sterilization and disinfection means, and is widely applied to various occasions needing sterilization and disinfection at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a fingerprint identification module with ultraviolet ray disinfection function.
The fingerprint identification module with the ultraviolet disinfection function comprises a flexible circuit board, a light homogenizing ring, a bracket and an outer cover;
the flexible circuit board comprises a fingerprint sensor circuit, a light source circuit and a comparison identification circuit; the fingerprint sensor circuit is provided with a fingerprint sensor, and the same surface of the light source circuit is provided with an indicating light source and an ultraviolet light source;
the fingerprint sensor circuit is attached to the back surface of the light source circuit and is integrally embedded into the light homogenizing ring; the fingerprint sensor is opposite to the direction of the indicating light source and the ultraviolet light source, and the indicating light source and the ultraviolet light source are opposite to the comparison identification circuit;
the bracket is assembled at the periphery of the indicating light source and the ultraviolet light source, the edge of the bracket is attached to the edge of the light homogenizing ring, and the bracket and the light homogenizing ring are made of transparent or semitransparent light guide materials; the light homogenizing ring is provided with a reflecting cavity, and the exposed surface of the reflecting cavity is a reflecting coating; the bracket is positioned between the light source circuit and the comparison identification circuit and forms a light homogenizing cavity with the light source circuit and the comparison identification circuit.
Preferably, the method comprises the following steps: the ultraviolet light source adopts an ultraviolet LED with the wavelength of 250nm to 280 nm.
Preferably, the method comprises the following steps: the indicating light source adopts an integrated RGB three-color LED.
Preferably, the method comprises the following steps: the indicating light source and the ultraviolet light source are arranged in parallel at the central position of the light source circuit and are simultaneously positioned at the central position of a light homogenizing cavity formed by the bracket, the light source circuit and the comparison identification circuit.
Preferably, the method comprises the following steps: the light homogenizing ring is provided with a light homogenizing ring window, the fingerprint sensor is exposed at the light homogenizing ring window, and the reflecting cavity is higher than the light homogenizing ring window and is flush with the highest position of the outer cover.
Preferably, the method comprises the following steps: the light homogenizing ring and the reflecting cavity on the light homogenizing ring are nested in the outer cover.
Preferably, the method comprises the following steps: the bottom surface of the outer cover is attached to the surface of the comparison identification circuit to form a closed cavity, and all components of the flexible circuit board are located in the closed cavity.
Preferably, the method comprises the following steps: the outer cover is made of metal or opaque plastic materials.
The utility model has the advantages that:
ultraviolet rays and indicating light enter a reflection cavity part of the light homogenizing ring after being homogenized through a light homogenizing cavity formed by the light source circuit and the comparison identification circuit, and light rays are transmitted out and irradiate the surface part of the sensor after being reflected by the reflective coating. The instruction light that sees through is used for the operating condition of user's suggestion module, and the ultraviolet that sees through carries out disinfection treatment to fingerprint sensor's surface. Because the directions of the ultraviolet light source and the fingerprint sensor are opposite, and a relatively large light homogenizing space of the light source is arranged, the finally emergent light is more uniform, and the ultraviolet sterilization effect is improved.
This fingerprint module is through with fingerprint sensor, instruct light source, ultraviolet light source, compare the range upon range of setting of identification circuit and in vertical space, has reduced the horizontal area of fingerprint module greatly, has realized that the function integration of ultraviolet disinfection is in fingerprint identification module, provides the miniaturized design of the fingerprint identification module who instructs the function simultaneously, makes its range of application more extensive.
Drawings
Fig. 1 is a schematic diagram of a fingerprint recognition module according to an embodiment of the present invention;
FIG. 2 is a schematic view of an outer cover according to an embodiment of the present invention;
fig. 3 is a schematic view of an optical homogenizing ring according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a flexible circuit board according to an embodiment of the present invention;
fig. 5 is a schematic view of a bracket according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a fingerprint identification module according to an embodiment of the present invention;
fig. 7 is a light path diagram of a fingerprint recognition module according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a fingerprint sensor circuit;
FIG. 9 is a schematic diagram of a light source circuit;
FIG. 10 is a schematic diagram of a bus cable between the fingerprint sensor circuit and the light source circuit;
FIG. 11 is a schematic diagram of a comparison identification circuit;
FIG. 12 is a schematic diagram of a flat cable of the light source circuit and the comparison identification circuit;
description of reference numerals: the light source device comprises an outer cover 1, an outer cover 11, an outer cover window 2, a light homogenizing ring 21, a light homogenizing ring window 22, a reflecting cavity 221, a light reflecting coating layer 3, a flexible circuit board 31, a fingerprint sensor circuit 311, a fingerprint sensor 32, an indication light source 321, an ultraviolet light source 322, a comparison identification circuit 33, a support 4, a support 41 and a steel plate 5.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Referring to fig. 1 to 6, the fingerprint identification module of an embodiment of the present invention includes an outer cover 1, a uniform light ring 2, a flexible circuit board 3 and a support 4, wherein the outer cover 1 is made of metal material, and the uniform light ring 2 and the support 4 are made of translucent plastic material. In this embodiment, the flexible circuit board 3 is divided into three portions, namely a fingerprint sensor circuit 31, a light source circuit 32 and a comparison identification circuit 33, which are connected by a flat cable and can be bent. The back surfaces of the fingerprint sensor circuit 31, the light source circuit 32 and the comparison identification circuit 33 are all provided with steel plates 5. The fingerprint sensor 311 is centrally disposed on the surface of the fingerprint sensor circuit 31, the indication light source 321 and the ultraviolet light source 322 are centrally disposed on the surface of the light source circuit 32, the fingerprint sensor circuit 31 is adhered to the back surface of the light source circuit 32, so that the directions of the fingerprint sensor 311 and the indication light source 321 and the ultraviolet light source 322 are opposite, and the front surface of the light source circuit 32 is opposite to the comparison identification circuit 33. The fingerprint sensor circuit 31 and the light source circuit 32 are integrally embedded into the light homogenizing ring 2, and the fingerprint sensor 311 is exposed at the light homogenizing ring window 21 and is in contact with a finger to be verified. The light homogenizing ring 2 is integrally embedded into the outer cover 1, the outer edge of the light homogenizing ring window 21 and the fingerprint sensor 311 are exposed at the position of the outer cover window 11, the reflecting cavity 22 is higher than the light homogenizing ring window 21 and is flush with the highest position of the outer cover 1, and the horizontal surface of the exposed part of the reflecting cavity 22 is coated with a reflecting coating 221. The vertical portion of the reflective chamber 22 transmits the indicating light and the ultraviolet light for indication and sterilization. The bracket 4 is located between the light source circuit 32 and the comparison identification circuit 33, is sleeved on the periphery of the light source 321, and forms a light-homogenizing cavity with the light source circuit 32 and the comparison identification circuit 33. The edge 41 of the bracket is superposed with the bottom surface of the dodging ring 2, and the bottom surface of the bracket is jointed with the surface of the comparison identification circuit 33. And the surface of the comparison identification circuit 33 is bonded with the bottom surface of the outer cover 1 to form a closed cavity, and all components of the flexible circuit board 3 are positioned in the closed cavity.
Referring to fig. 7, when the fingerprint identification module of this embodiment controls the indication light source 321 and the ultraviolet light source 322 to emit light, the light emitted by the indication light source 321 and the ultraviolet light source 322 first generates diffuse reflection on the surface of the identification circuit 33, then directly enters the reflection cavity 22 through the bracket 4 and the light equalizing ring 2 after multiple reflections or diffuse reflections in the light equalizing cavity, is reflected by the reflection coating 221, and exits from the vertical portion of the reflection cavity 22 to play a role in indication and perform irradiation disinfection on the surface of the fingerprint sensor 311.
Referring to fig. 8 to 12, a schematic circuit diagram of the flexible circuit board 3 is shown, the chip circuit used in the prior art is mainly divided into three parts, namely a fingerprint sensor circuit 31, a light source circuit 32 and a comparison identification circuit 33, the three parts are connected by flat cables, and all components are arranged on the same side of the flexible circuit board 3.
The fingerprint module of this embodiment can be controlled by software processes, such as: when the specific fingerprints are successfully matched, the ultraviolet light source 322 and the indicating light source 321 are automatically started, ultraviolet light and indicating light enter the reflection cavity 22 of the light homogenizing ring 2 after being homogenized through a light homogenizing cavity formed by the light source circuit 32 and the comparison identification circuit 33, and light rays penetrate out and irradiate the surface part of the sensor 311 after being reflected by the reflective coating 221. The transmitted indicating light is used for prompting the working state of the module for the user, and the transmitted ultraviolet light is used for disinfecting the surface of the fingerprint sensor 311. After the disinfection process, the software process automatically turns off the ultraviolet light source 322 and the indicating light source 321, and the disinfection process is ended.
Claims (8)
1. The utility model provides a fingerprint identification module with ultraviolet ray disinfection function which characterized in that: comprises a flexible circuit board (3), a light homogenizing ring (2), a bracket (4) and an outer cover (1);
the flexible circuit board (3) comprises a fingerprint sensor circuit (31), a light source circuit (32) and a comparison identification circuit (33); the fingerprint sensor circuit (31) is provided with a fingerprint sensor (311), and the same surface of the light source circuit (32) is provided with an indicating light source (321) and an ultraviolet light source (322);
the fingerprint sensor circuit (31) is attached to the back surface of the light source circuit (32) and is integrally embedded into the uniform light ring (2); the fingerprint sensor (311) is opposite to the direction of the indicating light source (321) and the ultraviolet light source (322), and the indicating light source (321) and the ultraviolet light source (322) are opposite to the comparison identification circuit (33);
the bracket (4) is assembled on the peripheries of the indicating light source (321) and the ultraviolet light source (322), the bracket edge (41) of the bracket (4) is attached to the edge of the light homogenizing ring (2), and the bracket (4) and the light homogenizing ring (2) are made of transparent or semitransparent light guide materials; the uniform light ring (2) is provided with a reflecting cavity (22), and the exposed surface of the reflecting cavity (22) is a reflecting coating (221); the bracket (4) is positioned between the light source circuit (32) and the comparison identification circuit (33) and forms a light homogenizing cavity with the light source circuit (32) and the comparison identification circuit (33).
2. The fingerprint recognition module with ultraviolet disinfection function of claim 1, wherein: the ultraviolet light source (322) adopts an ultraviolet LED with the wavelength of 250nm to 280 nm.
3. The fingerprint recognition module with ultraviolet disinfection function of claim 1, wherein: the indicating light source (321) adopts an integrated RGB three-color LED.
4. The fingerprint recognition module with ultraviolet disinfection function of claim 1, wherein: the indicating light source (321) and the ultraviolet light source (322) are arranged in parallel at the central position of the light source circuit (32) and are simultaneously positioned at the central position of a light homogenizing cavity formed by the bracket (4), the light source circuit (32) and the comparison identification circuit (33).
5. The fingerprint recognition module with ultraviolet disinfection function of claim 1, wherein: the uniform light ring (2) is provided with a uniform light ring window (21), the fingerprint sensor (311) is exposed at the uniform light ring window (21), and the reflection cavity (22) is higher than the uniform light ring window (21) and is flush with the highest position of the outer cover (1).
6. The fingerprint recognition module with ultraviolet disinfection function of claim 1, wherein: the light homogenizing ring (2) and the reflecting cavity (22) on the light homogenizing ring are nested in the outer cover (1).
7. The fingerprint recognition module with ultraviolet disinfection function of claim 1, wherein: the bottom surface of the outer cover (1) is attached to the surface of the comparison identification circuit (33) to form a closed cavity, and all components of the flexible circuit board (3) are located in the closed cavity.
8. The fingerprint recognition module with ultraviolet disinfection function of claim 1, wherein: the outer cover (1) is made of metal or opaque plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020342039.2U CN211236938U (en) | 2020-03-18 | 2020-03-18 | Fingerprint identification module with ultraviolet ray disinfection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020342039.2U CN211236938U (en) | 2020-03-18 | 2020-03-18 | Fingerprint identification module with ultraviolet ray disinfection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211236938U true CN211236938U (en) | 2020-08-11 |
Family
ID=71918463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020342039.2U Active CN211236938U (en) | 2020-03-18 | 2020-03-18 | Fingerprint identification module with ultraviolet ray disinfection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211236938U (en) |
-
2020
- 2020-03-18 CN CN202020342039.2U patent/CN211236938U/en active Active
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