CN206877341U - A kind of acquisition window constant temperature heating device of fingerprint, palmmprint Acquisition Instrument - Google Patents
A kind of acquisition window constant temperature heating device of fingerprint, palmmprint Acquisition Instrument Download PDFInfo
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- CN206877341U CN206877341U CN201720351427.5U CN201720351427U CN206877341U CN 206877341 U CN206877341 U CN 206877341U CN 201720351427 U CN201720351427 U CN 201720351427U CN 206877341 U CN206877341 U CN 206877341U
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- acquisition window
- fingerprint
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- palmmprint
- temperature
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Abstract
The utility model belongs to field of biological recognition, more particularly to the acquisition window constant temperature heating device of a kind of fingerprint, palmmprint Acquisition Instrument.The utility model includes being installed on fingerprint, the acquisition window eyeglass on palmmprint acquisition window, and the surface of the acquisition window eyeglass is provided with transparency conducting layer；Also include adjustable thermostatic control circuit and its power supply, the adjustable thermostatic control circuit electrically connects with transparency conducting layer.The utility model can make the temperature of acquisition window lens surface constant in the range of the value temperature of fainting of adjustable thermostatic control circuit, on the premise of collection image quality is not influenceed, it can effectively eliminate because of the problem of temperature difference of finger, palm and acquisition window lens surface produces dryness fingerprint, palmmprint collection is difficult, and with quick heating, be heated evenly, temperature is constant, temperature range is controllable, power is low, heating efficiency is high, it is noiseless, pollution-free the features such as.
Description
Technical field
The utility model belongs to field of biological recognition, more particularly to the acquisition window perseverance of a kind of fingerprint, palmmprint Acquisition Instrument
Warm heater.
Background technology
It is well known that human body temperature is constant in a fixed scope under normal circumstances, generally 36 DEG C~40 DEG C.When outer
Pore can open when boundary's environment temperature exceedes human body temperature；Pore meeting when ambient temperature is less than human body temperature
Tighten up, skin can also shrink drying, and the fingerprint that now gathers, palmmprint effect can be poor.
With the development of biological identification technology, fingerprint, palmmprint Acquisition Instrument are more and more wider in the application of safety-security area, Er Qie
It is most ripe as technology in global range, the widest biological recognition product of application, it is necessary to tackle global different places
Weather, wherein just including sombre, moist, the extreme weather conditions such as severe cold.Under these extreme weather conditions, due to temperature
It is low, the reason such as high humidity, when carrying out fingerprint, palmmprint collection, because the temperature of fingerprint, palmmprint acquisition window lens surface is less than
The temperature of human body, temperature difference is produced, when finger, palm and acquisition window lens contacts, due to acquisition window lens surface temperature
Less than the temperature of human body, finger, the skin of palm easily shrink, directly resulted in dry finger, the picking rate of dry palm, effect degree
Fruit and quality degradation, under extreme condition, in some instances it may even be possible to can not normal acquisition.Further, since acquisition window lens surface and
Human body has a temperature difference, easily produces fog during collection, this can influence the effect and quality of collection.Therefore fingerprint, palmmprint are gathered
The heating on window lens surface is a very feasible, necessary function.
The method heated to fingerprint, palmmprint acquisition window eyeglass has a lot, such as traditional PTC thermistor hot type,
Acquisition window lens surface Resistant heating type, common Resistant heating type etc..But these mode of heatings are all defective.PTC
The temperature of thermosensitive resistance type can be very high, easily causes acquisition window eyeglass uneven heating even；Acquisition window lens surface electricity
Resistance silk hot type can produce the image of resistance wire in image is gathered, and have a strong impact on collection image quality and discrimination；Electricity blows
Wind type heating noise is big, and efficiency is low.
China Patent Publication No. CN201917923U, publication date August in 2011 3 days, entitled " palm print instrument defogging system "
Utility model patent in disclose a kind of palm print instrument defogging system, including heating plate, thermally conductive sheet, electronic temperature control switch, power supply；
The thermally conductive sheet is attached to prism not on the face of thang-kng, and heating plate is fixed on thermally conductive sheet；Electronic temperature control switch is fixed on neighbouring
The position of prism upper surface, and connection power supply and heating plate are switched by electronic temperature control.It is disadvantageous in that, the demister system needs
Heated with heating plate and thermally conductive sheet to prism, the process of heating is complex, and the temperature heated can not control, it is impossible to reaches
Preferable effect.
China Patent Publication No. CN203849744U, publication date September in 2014 24 days, entitled " fingerprint, palmmprint Acquisition Instrument
A kind of fingerprint, palmmprint Acquisition Instrument intelligent heater, including electrical heating are disclosed in the utility model patent of intelligent heater "
Film, electronic temperature control switch, power supply；The electric heating film is attached to prism not on the face of thang-kng, and electronic temperature control switch is fixed on neighbour
The position of nearly prism upper surface, and connection power supply and electric heating film are switched by electronic temperature control.It is disadvantageous in that, the heating system
System needs that the heat on electric heating film is delivered to the collection of prism by way of heat transfer from the non-light pass surface in the both sides of prism
Surface, transmittance process time length, and prism collection surface non-uniform temperature, can not reach preferable effect.
For solve the above-mentioned problems in the prior art, it is necessary to a kind of quick heating of R ＆ D design, be heated evenly, temperature it is permanent
Fixed, the acquisition window constant temperature heating device of the fingerprint that temperature range is controllable, power is low, heating efficiency is high, palmmprint Acquisition Instrument.
Utility model content
The utility model provides a kind of quick heating to solve technical problem present in known technology, is heated evenly, temperature
Constant, temperature range is controllable, power is low, heating efficiency is high fingerprint, the acquisition window of palmmprint Acquisition Instrument is spent to be filled with heated at constant temperature
Put.
The utility model is adopted the technical scheme that to solve technical problem present in known technology：A kind of fingerprint,
The acquisition window constant temperature heating device of palmmprint Acquisition Instrument includes being installed on fingerprint, the acquisition window on palmmprint acquisition window
Eyeglass, the surface of the acquisition window eyeglass are provided with transparency conducting layer；Also include adjustable thermostatic control circuit and its power supply
Power supply, the adjustable thermostatic control circuit electrically connect with transparency conducting layer.
Preferably：The transparency conducting layer is the transparent conductive coatings for being attached to acquisition window lens surface.
Preferably：The acquisition window eyeglass includes collection surface and non-acquired face, and the transparent conductive coatings are at least attached
In one of collection surface and non-acquired face.
Preferably：The transparency conducting layer includes transparent base layer and is attached to the transparent conductive coatings on transparent base layer surface；
The transparent base layer is glued at the surface of the acquisition window eyeglass；The transparent base layer is transparent membrane or sheet glass.
Preferably：The transparent base layer includes cemented surface and non-cemented surface, and the transparent conductive coatings are at least attached to glue
One of conjunction face and non-cemented surface.
Preferably：The transparent conductive coatings are：One in tin-doped indium oxide plated film, nickel oxide plated film or graphene plated film
Kind.
Preferably：The adjustable thermostatic control circuit includes the temperature detection IC of controllable threshold temperature.
Preferably：The acquisition window eyeglass is：One kind in prism, level crossing or micro-lens array.
The advantages of the utility model and good effect are：The utility model can make the temperature of acquisition window lens surface permanent
It is scheduled in the range of the value temperature of fainting of adjustable thermostatic control circuit, on the premise of collection image quality is not influenceed, Ke Yiyou
The elimination of effect because of the problem of temperature difference of finger, palm and acquisition window lens surface produces dryness fingerprint, palmmprint collection is difficult, and
And with quick heating, be heated evenly, temperature is constant, temperature range is controllable, power is low, heating efficiency is high, noiseless, pollution-free etc.
Feature.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model embodiment 2；
Fig. 3 is working cycles system schematic of the present utility model.
In figure：1st, acquisition window eyeglass；2nd, transparency conducting layer；2-1, transparent base layer；3rd, adjustable thermostatic control circuit；4、
Power supply.
Embodiment
For invention, features and effects of the present utility model can be further appreciated that, following examples are hereby enumerated specifically
It is bright as follows：
Refer to Fig. 1, the utility model includes being installed on fingerprint, the acquisition window eyeglass 1 on palmmprint acquisition window, described
The surface of acquisition window eyeglass 1 is provided with transparency conducting layer 2；Also include adjustable thermostatic control circuit 3 and its power supply 4,
The adjustable thermostatic control circuit 3 electrically connects with transparency conducting layer 2.
Embodiment 1：
In the present embodiment, the transparency conducting layer 2 is the transparent conductive coatings for being attached to the surface of acquisition window eyeglass 1.
The acquisition window eyeglass 1 includes collection surface and non-acquired face, and the transparent conductive coatings, which are at least attached to, adopts
Collect one of surface and non-acquired face.
The adjustable thermostatic control circuit 3 includes the temperature detection IC of controllable threshold temperature.
The acquisition window eyeglass 1 is：One kind in prism, level crossing or micro-lens array.
The transparent conductive coatings are：One kind in tin-doped indium oxide plated film, nickel oxide plated film or graphene plated film
Transparent conductive coatings are by tin-doped indium oxide, nickel oxide, stone by modes such as evaporation coating, precipitation, vacuum sputterings
The materials such as black alkene are plated to the surface of acquisition window eyeglass 1.Transparent conductive coatings have two it is obvious the characteristics of：When high pass photosensitiveness,
More than 80% can reach to the percent of pass of visible ray；Second, electric conductivity, due in the very weak intrinsic semiconductor of script conductive capability
The micro other elements of middle incorporation, make the electric conductivity of semiconductor that significant changes occur, therefore transparent conductive coatings have well
Electric conductivity.Such as tin element is exactly incorporated into indium oxide by indium tin oxide transparent conduction plated film, conductance is improved, it leads
Electrical property is being currently best, and lowest resistivity reaches 10-5 Ω cm magnitudes.
Fig. 3 is referred to, operation principle of the present utility model is as follows：
Before utility model works, it is necessary first to which control IC mono- to adjustable thermostatic control circuit 3 is fixed
Value of fainting temperature A.When utility model works, the control IC detection acquisition windows eyeglass 1 of adjustable thermostatic control circuit 2 is adopted
Collect the temperature B on surface, and compared with the value temperature A that faints has been set, set when the temperature B on the surface of acquisition window eyeglass 1 is less than
It is fixed faint value temperature A when, adjustable thermostatic control circuit 3 starts turn-on power 4 and transparent conductive coatings layer, power supply 3 to saturating
Bright conductive film plating layer power supply, electric energy change into heat energy in transparent conductive coatings layer and heated to acquisition window eyeglass 1, collecting window
The temperature on the surface of mouth mirror piece 1 can be gradually increasing；When the control IC detection acquisition windows eyeglass 1 of adjustable thermostatic control circuit 3
Collection surface temperature B higher than setting faint value temperature A when, adjustable thermostatic control circuit 3 will auto power off 4 and
The connection of transparent conductive coatings layer, transparent conductive coatings layer stop heating.Through heat transfer after a while, acquisition window eyeglass
The temperature on 1 surface can be by reduction, when the control IC of adjustable thermostatic control circuit 3 detects adopting for acquisition window eyeglass 1 again
The temperature B on collection surface less than setting faint value temperature A when, the reconnect power supply 4 and electrically conducting transparent of adjustable thermostatic control circuit 3
Plated film, transparent conductive coatings layer reheat.Such circulation work, to reach the heated at constant temperature effect to acquisition window eyeglass 1.
The normal temperature of human body is typically at 36 DEG C~40 DEG C, and according to the difference of environment, finger, the temperature of palm typically will not
More than 40 DEG C, so when the value temperature of fainting of adjustable thermostatic control circuit is set in 35 DEG C or so by we, can be effective
Because the problem of temperature difference produces dryness fingerprint, palmmprint collection is difficult when eliminating collection.Can also be according to local environment weather
The difference of different and user custom, the value temperature of fainting of different adjustable thermostatic control circuits is set.The utility model can
So that the temperature on the surface of acquisition window eyeglass 1 is constant in the range of the value temperature of fainting of adjustable thermostatic control circuit, in not shadow
On the premise of ringing collection image quality, the temperature difference generation because of finger, palm and acquisition window lens surface can be effectively eliminated
Dryness fingerprint, palmmprint collection it is difficult the problem of, and with quick heating, be heated evenly, temperature is constant, temperature range is controllable, work(
Rate is low, heating efficiency is high, it is noiseless, pollution-free the features such as.
Embodiment 2：
Refer to Fig. 2, in the present embodiment, the transparency conducting layer 2 includes transparent base layer 2-1 and is attached to transparent base layer 2-
The transparent conductive coatings on 1 surface；The transparent base layer 2-1 is glued at the surface of the acquisition window eyeglass 1；The transparent base layer
2-1 is transparent membrane or sheet glass.
The transparent base layer 2-1 includes cemented surface and non-cemented surface, and the transparent conductive coatings are at least attached to cemented surface
One of with non-cemented surface.
Compared with Example 1, the technology difficulty of transparent conductive coatings is considered, the utility model is provided derived from another kind
The acquisition window constant temperature heating device of fingerprint, palmmprint Acquisition Instrument.First by transparent conductive coatings layer be plated to one piece it is smooth, smooth and
On the very thin transparent base layer 2-1 of thickness, then pass through the side of gluing in the transparent base layer 2-1 that evaporation is had to transparent conductive coatings
Formula pastes fingerprint, on palmmprint acquisition window eyeglass 1, wherein evaporation has the surface of transparent conductive coatings can position as shown in Figure 2
, can also be positioned at transparent base layer 2-1 and acquisition window eyeglass 1 following table in transparent base layer 2-1 upper surface (i.e. non-cemented surface)
Face (i.e. with the cemented surface of acquisition window eyeglass 1)；Can also transparent base layer 2-1 upper surface and with acquisition window eyeglass 1
Cemented surface transparent conductive coatings are all deposited.
The utility model is not only limited in above-mentioned embodiment, every using directly by being deposited, precipitating, the mode such as sputtering
Be plated in fingerprint, the surface of palmmprint acquisition window eyeglass 1, be plated in gluing the film of glossy clear the upper surface of sheet glass or under
Surface, either one side, two sides, three faces, four sides or more face evaporation transparent conductive coatings, belong to this use it is novel protected
Within the scope of, depending on concrete application situation.
Claims (8)
- A kind of 1. acquisition window constant temperature heating device of fingerprint, palmmprint Acquisition Instrument, it is characterised in that：Including be installed on fingerprint, Acquisition window eyeglass (1) on palmmprint acquisition window, the surface of the acquisition window eyeglass (1) are provided with transparency conducting layer (2)； Also include adjustable thermostatic control circuit (3) and its power supply (4), the adjustable thermostatic control circuit (3) is led with transparent Electric layer (2) electrically connects.
- 2. the acquisition window constant temperature heating device of fingerprint as claimed in claim 1, palmmprint Acquisition Instrument, it is characterised in that：Institute It is the transparent conductive coatings for being attached to acquisition window eyeglass (1) surface to state transparency conducting layer (2).
- 3. the acquisition window constant temperature heating device of fingerprint as claimed in claim 2, palmmprint Acquisition Instrument, it is characterised in that：Institute Stating acquisition window eyeglass (1) includes collection surface and non-acquired face, the transparent conductive coatings be at least attached to collection surface and One of non-acquired face.
- 4. the acquisition window constant temperature heating device of fingerprint as claimed in claim 1, palmmprint Acquisition Instrument, it is characterised in that：Institute Stating transparency conducting layer (2) includes transparent base layer (2-1) and is attached to the transparent conductive coatings on transparent base layer (2-1) surface；It is described Transparent base layer (2-1) is glued at the surface of the acquisition window eyeglass (1)；The transparent base layer (2-1) is transparent membrane or glass Glass piece.
- 5. the acquisition window constant temperature heating device of fingerprint as claimed in claim 4, palmmprint Acquisition Instrument, it is characterised in that：Institute Stating transparent base layer (2-1) includes cemented surface and non-cemented surface, and the transparent conductive coatings are at least attached to cemented surface and non-gluing One of face.
- 6. the acquisition window constant temperature heating device of the fingerprint, palmmprint Acquisition Instrument as described in claim any one of 2-5, its feature It is：The transparent conductive coatings are：One kind in tin-doped indium oxide plated film, nickel oxide plated film or graphene plated film.
- 7. the acquisition window constant temperature heating device of fingerprint as claimed in claim 1, palmmprint Acquisition Instrument, it is characterised in that：Institute State the temperature detection IC that adjustable thermostatic control circuit (3) includes controllable threshold temperature.
- 8. the acquisition window constant temperature heating device of fingerprint as claimed in claim 1, palmmprint Acquisition Instrument, it is characterised in that：Institute Stating acquisition window eyeglass (1) is：One kind in prism, level crossing or micro-lens array.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720351427.5U CN206877341U (en) | 2017-04-06 | 2017-04-06 | A kind of acquisition window constant temperature heating device of fingerprint, palmmprint Acquisition Instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720351427.5U CN206877341U (en) | 2017-04-06 | 2017-04-06 | A kind of acquisition window constant temperature heating device of fingerprint, palmmprint Acquisition Instrument |
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| CN206877341U true CN206877341U (en) | 2018-01-12 |
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|---|---|---|---|
| CN201720351427.5U Expired - Fee Related CN206877341U (en) | 2017-04-06 | 2017-04-06 | A kind of acquisition window constant temperature heating device of fingerprint, palmmprint Acquisition Instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109460741A (en) * | 2018-11-16 | 2019-03-12 | 青岛奥美克生物信息科技有限公司 | Biometric image quality modifying apparatus |
| WO2020238869A1 (en) * | 2019-05-30 | 2020-12-03 | 华为技术有限公司 | Fingerprint identification method and intelligent terminal |
| US20210003309A1 (en) * | 2019-07-05 | 2021-01-07 | Lg Electronics Inc. | Method for air conditioning and air conditioner based on thermal comfort |
-
2017
- 2017-04-06 CN CN201720351427.5U patent/CN206877341U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109460741A (en) * | 2018-11-16 | 2019-03-12 | 青岛奥美克生物信息科技有限公司 | Biometric image quality modifying apparatus |
| CN109460741B (en) * | 2018-11-16 | 2024-01-23 | 青岛奥美克生物信息科技有限公司 | Biological recognition image quality improving device |
| WO2020238869A1 (en) * | 2019-05-30 | 2020-12-03 | 华为技术有限公司 | Fingerprint identification method and intelligent terminal |
| US20210003309A1 (en) * | 2019-07-05 | 2021-01-07 | Lg Electronics Inc. | Method for air conditioning and air conditioner based on thermal comfort |
| US11668486B2 (en) * | 2019-07-05 | 2023-06-06 | Lg Electronics Inc. | Method for air conditioning and air conditioner based on thermal comfort |
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