CN104352241A - Infrared ray fingerprint displayer - Google Patents
Infrared ray fingerprint displayer Download PDFInfo
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- CN104352241A CN104352241A CN201410650491.4A CN201410650491A CN104352241A CN 104352241 A CN104352241 A CN 104352241A CN 201410650491 A CN201410650491 A CN 201410650491A CN 104352241 A CN104352241 A CN 104352241A
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- 238000012545 processing Methods 0.000 claims abstract description 104
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims description 97
- 238000007362 Burton trifluoromethylation reaction Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 22
- 230000005855 radiation Effects 0.000 claims description 20
- 238000005286 illumination Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 4
- 239000005304 optical glass Substances 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 description 11
- 238000003825 pressing Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- NIPYQLPZPLBOLF-UHFFFAOYSA-N 3'-hydroxy-6'-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyspiro[2-benzofuran-3,9'-xanthene]-1-one Chemical compound OC1C(O)C(O)C(CO)OC1OC1=CC=C2C3(C4=CC=CC=C4C(=O)O3)C3=CC=C(O)C=C3OC2=C1 NIPYQLPZPLBOLF-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004020 luminiscence type Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 210000001595 mastoid Anatomy 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000001166 anti-perspirative effect Effects 0.000 description 1
- 239000003213 antiperspirant Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
- A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
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Abstract
Both the invention discloses an infrared ray fingerprint displayer, and belongs to the field of fingerprint image picking devices. The infrared ray fingerprint displayer comprises a shell with hollow interior, wherein the shell is internally provided with an infrared ray launching device, a detecting platform, a heating device, a timing device and a data processing device, wherein the heating device is arranged on the detecting platform, and the detecting platform is also provided with a temperature sensor; the temperature sensor, the timing device, the heating device and the infrared ray launching device are respectively connected with the data processing device, and the infrared ray launching device is positioned above the plane of the detecting platform. The invention aims at providing the infrared ray fingerprint displayer which is used for effectively reducing the pollution caused when fingerprints are shown by a chemical reagent and effectively improving the display effect of the current infrared fingerprint displaying technology.
Description
Technical field
The present invention relates to fingerprint picture collector field, in particular to a kind of infrared fingerprint display instrument.
Background technology
Under normal circumstances, we are divided into three kinds the fingerprint that scene of a crime obtains: visible fingerprint, impression fingerprint and latent fingerprint.Wherein latent fingerprint is difficult to differentiate and find under normal conditions, therefore needs some to find and strengthens the method manifested, handling a case it can be made to serve investigation.
The current main indenes diketone of paper fingerprint Display Technique, the chemical reagent such as 1,2,3-indantrione monohydrate manifest, or after also having employing infra red treatment, use 445nm laser to irradiate, manifest after exciting.The ultimate principle of laser fingerprint manifestation is carried out optical excitation and is naturally present in or is attached on fingerprint material or generates with fingerprint residues thing generation chemical reaction the material possessing photoluminescent property and make it stimulated luminescence beyond being, fingerprint mastoid process streakline and background are presented a contrast thus shows or strengthen laten fingerprints.
Inventor finds when studying prior art, adopts chemical reagent, has pollution to paper.Some reagent also has health to damage to end user, and by infra red treatment, the irradiation time required different paper is different with heating-up temperature, manifests poor effect.
Summary of the invention
The object of the present invention is to provide a kind of infrared fingerprint display instrument, with effectively reduce current manifest fingerprint by chemical reagent time to the pollution of environment and the display effect effectively improving current infrared ray display fingerprint technique.
First aspect, a kind of infrared fingerprint display instrument provided by the invention, comprise: the housing of inner hollow, described enclosure interior is provided with infrared transmitting device, detection platform, heater, timing means and data processing equipment, described heater is arranged in described detection platform, described detection platform is also provided with temperature sensor, described temperature sensor, described timing means, described heater are all connected with described data processing equipment with described infrared transmitting device, and described infrared transmitting device is positioned at the top of the plane of described detection platform;
Described detection platform is for placing the paper of pending attachment latent fingerprint;
Described heater is for heating the pending paper in described detection platform;
Described temperature sensor is for gathering the temperature information in described detection platform;
Described infrared transmitting device is used for sending infrared ray, irradiates the latent fingerprint on described pending paper;
Described timing means is for starting the timing of internal preset, and described timing is the working time of described heater and described infrared transmitting device;
Described data processing equipment is used for sending instruction to described heater and described timing means, triggers the start and stop of described heater and described timing means, also for receiving the temperature information that described temperature sensor gathers;
Be provided with threshold temperature in described data processing equipment, when described temperature information is higher than described threshold temperature, trigger the heating of described heater stop.
In conjunction with first aspect, present invention also offers the first possibility embodiment of first aspect, wherein, the outer wall of described housing is provided with temperature indicator, the first temperature control burtons and the second temperature control burtons, described first temperature control burtons is all connected with described data processing equipment with described second temperature control burtons, and described data processing equipment is connected with described temperature indicator;
Described first temperature control burtons, for triggering described data processing equipment, makes described threshold temperature increase;
Described second temperature control burtons, for triggering described data processing equipment, makes described threshold temperature reduce.
In conjunction with first aspect, present invention also offers the second possibility embodiment of first aspect, wherein, the outer wall of described housing is provided with time display, the first timing controlled button and the second timing controlled button, described first timing controlled button is all connected with described data processing equipment with described second timing controlled button, and described data processing equipment is connected with described time display;
Described first timing controlled button, for triggering described data processing equipment, makes described timing increase;
Described second timing controlled button, for triggering described data processing equipment, makes described timing reduce.
In conjunction with first aspect or first aspect the first may the second of embodiment or first aspect may embodiment, present invention also offers the third possibility embodiment of first aspect, wherein, described housing is provided with watch window, described watch window comprises the through hole of both ends open, the two ends of described through hole are all provided with optical glass, and the one end open of described through hole is positioned at described surface of shell, and other end opening is positioned at the top of described detection platform.
In conjunction with the first possibility embodiment of first aspect, the embodiment of the present invention additionally provides the 4th kind of possibility embodiment of first aspect, and wherein, described housing is provided with the first radiator fan, and described first radiator fan is connected with described data processing equipment.
In conjunction with first aspect, the embodiment of the present invention additionally provides the 5th kind of possibility embodiment of first aspect, and wherein, described detection platform comprises plate body, and a side of described plate body is provided with handle, and described plate body and described housing are slidably connected; Also be provided with the second radiator fan bottom described plate body, described second radiator fan is connected with described data processing equipment.
In conjunction with the 5th kind of possibility embodiment of first aspect, the embodiment of the present invention additionally provides the 6th kind of possibility embodiment of first aspect, and wherein, the surface of described plate body is equipped with heat pad, and described inner walls is coated with infrared light reflecting material.
In conjunction with the 5th kind of possibility embodiment of first aspect or the 6th kind of possibility embodiment of first aspect, the embodiment of the present invention additionally provides the 7th kind of possibility embodiment of first aspect, wherein, the junction of described plate body and described housing is provided with position sensor, and shown position sensor is connected with described data processing equipment.
In conjunction with first aspect, the embodiment of the present invention additionally provides the 8th kind of possibility embodiment of first aspect, wherein, described housing is also provided with laser beam emitting device.
Second aspect, the embodiment of the present invention additionally provides a kind of infrared fingerprint display packing, be applied to infrared fingerprint display instrument, described infrared fingerprint display instrument comprises infrared transmitting device, detection platform, temperature sensor, heater, timing means and data processing equipment, timing is preset with in described timing means, described temperature sensor and described heater are arranged in described detection platform, described detection platform is equipped with pending paper, described pending paper is attached with latent fingerprint, preset temperature value is provided with in described data processing equipment, described method comprises:
Described data processing equipment sends timing sign on to described timing means, triggers described customizing device and starts described timing;
Described data processing equipment sends and starts heating instructions to described heater, and described heating instructions triggers paper described in described heating devices heat;
Described data processing equipment sends and starts illumination instruction to described infrared transmitting device, triggers described infrared transmitting device and sends latent fingerprint on paper described in infrared ray radiation;
Described data processing equipment obtains the temperature information of the described detection platform that described temperature sensor gathers, if described temperature information is higher than described preset temperature value, then send and stop heating instructions to described heater, trigger the heating of described heater stop, until the temperature information that described temperature sensor gathers is lower than described preset temperature value;
Described data processing equipment obtains the timing END instruction that described timing means sends, and terminates to perform this method.
The technique effect that the present invention realizes: the to be detected paper being attached with fingerprint is placed on detection platform by the present invention, the temperature of the paper in described detection platform is raised by heater, the fingerprint on paper described in infrared ray radiation is launched at a certain temperature by described infrared transmitting device, make the chemical substance generation chemical reaction possessing photoluminescent property in the latent fingerprint on paper, thus be revealed as visible fingerprint.With the indenes diketone of prior art, the method that the chemical reagent such as 1,2,3-indantrione monohydrate carry out manifesting is compared, and effectively reduces chemical reagent to paper and the injury to human body, effectively reduces the technology environmental pollution that chemical reagent manifests fingerprint; In addition on the one hand, the present invention arranges heating-up temperature by described data processing equipment, the heating-up temperature of described detection platform is controlled by temperature sensor, such as, when described temperature sensor detects the temperature of described detection platform higher than predetermined value, described data processing equipment controls the heating of described heater stop, and the temperature of described detection platform is maintained in predetermined range.And the timing of timing means is set, the paper according to different-thickness or material arranges different heating-up temperatures and infrared ray radiation time, makes the latent fingerprint on paper fully carry out illumination chemical reaction, effectively improves the display effect of fingerprint.Moreover, as long as select different light application times and different heating-up temperatures, just can detect the latent fingerprint on the paper of all materials or thickness, make the present invention compared with prior art have wider fingerprint indication range.
Further, described first temperature control burtons of the present invention is all connected with described data processing equipment with described second temperature control burtons.Such as, it is threshold temperature that described data processing equipment presets described detection platform by the maximum temperature heated, numerical value is 120 DEG C, when described heater works, press described first temperature control burtons, described data processing equipment detects that described first temperature control burtons is pressed, and described threshold temperature changed by described data processing equipment is 121 DEG C, namely often press once described first temperature control burtons, described threshold temperature just increases by 1 DEG C; In like manner, described second temperature control burtons is for reducing described threshold temperature, and often press described second temperature control burtons next time, described threshold temperature reduces by 1 DEG C.The temperature value of certain increase or minimizing can be also other numerical value, and the embodiment of the present invention only illustrates, is not limited to this.
Described temperature indicator shows the temperature of described detection platform, also can show described threshold temperature.Or, can when pressing described first temperature control burtons or described second temperature control burtons, display described threshold temperature now, recovers the temperature of the plate body of the described detection platform of display after showing a second.
Further, the embodiment of the present invention can also change the infrared ray radiation time by the first timing controlled button and the second timing controlled button.Such as, timing is preset with, if timing is 20 minutes, after namely timing terminates in described timing means, described data processing equipment receives the triggering command that timing terminates, then stop described infrared transmitting device to launch infrared ray and described heating devices heat.When pressing described first timing controlled button, described data processing equipment detects that described first timing controlled button is pressed, described timing changed by described data processing equipment, such as increase by one minute, described timing is made to become 21 minutes, therefore often press described first timing controlled button, described timing just increases by one minute.In like manner, when pressing described second timing controlled button, described data processing equipment makes described timing reduce one minute, makes described timing become 19 minutes.The time value of certain increase or minimizing can be also other numerical value, and the embodiment of the present invention only illustrates, is not limited to this.
Described time display shows the time of described timing means, such as, reduced gradually by described timing in the mode of countdown, until be 0 or manual-lock, or with the mode timing that numerical value increases by 0, also can show described timing.Or, can when pressing described first timing controlled button or described second timing controlled button, display described timing now, recovers the residue timing of the described timing means of display after showing a second.
Further, the embodiment of the present invention observes the fingerprint manifestation situation on the paper in detection platform by watch window, avoid user because of the thickness material misjudgment to paper, infrared ray radiation time or time of heating devices heat of setting are too high, make the temperature of paper too high and damage paper, being observed the fingerprint manifestation situation on the paper in described detection platform by watch window, completing or find that paper damages at fingerprint manifestation, stop heating immediately, take out paper in time.
Further, the heat in housing, by the process of heating devices heat, is shed by the first radiator fan by the embodiment of the present invention, and temperature is heated up according to the curve of setting.Control temperature is in required scope.Described first radiator fan is connected with described data processing equipment, described data processing equipment is connected with described temperature sensor, described temperature sensor gathers the temperature of described detection platform, and be input to described data processing equipment, described data processing equipment the starting or stoping of the first radiator fan according to gathered temperature automatic control.In addition, after completing the manifesting of fingerprint of paper, the temperature in housing can also be made to drop to room temperature by described first radiator fan.
Further, detection platform of the present invention comprises plate body, during use, described paper to be detected is laid in described detection platform.By described handle, described detection platform is pulled out, treat that described detection platform is advanced in described housing by described handle after laying by paper again.
Further, the embodiment of the present invention can also ensure the homogeneous temperature of the paper to be detected in detection platform by described heat pad.
Further, the embodiment of the present invention is monitored described detection platform by the position sensor being arranged on described detection platform and is in open mode, namely described detection platform is drawn out in described housing and is positioned at described hull outside, is still in closed condition, and namely described detection platform is positioned at described housing.When institute's displacement sensors detects that described detection platform is positioned at housing, when namely described detection platform is in closed condition, described second radiator fan quits work, and the air-flow avoiding the work of described second radiator fan to cause, damages paper to be detected; When institute's displacement sensors detects that described detection platform is positioned at outside housing, namely described detection platform is in open mode, and described heater and described infrared transmitting device do not work, and avoids damaging instrument.
In addition, described second radiator fan is manifesting fingerprint end-of-job, opens described detection platform when described detection platform is lowered the temperature, accelerates cooling rate by described second radiator fan.
Further, the infrared light reflecting material that the embodiment of the present invention can also be applied by described inner walls, reflects the infrared ray be irradiated on the inwall of described housing, improves ultrared utilization rate.
Further, the present invention is after making the fingerprint manifestation on paper by infrared ray radiation, the laser that can also send certain wavelength by described laser beam emitting device is irradiated to described fingerprint place, make the material stimulated luminescence with photoluminescent property that chemical reaction does not occur, make the fingerprint of display more complete, effectively improve display effect.In addition, manifest under also the fingerprint after infrared ray radiation can being placed directly in natural light.
Other features and advantages of the present invention are set forth in description subsequently, and, partly become apparent from description, or understand by implementing the embodiment of the present invention two.Object of the present invention and other advantages realize by structure specifically noted in write description, claims and accompanying drawing and obtain.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.Shown in accompanying drawing, above-mentioned and other object of the present invention, Characteristics and advantages will be more clear.Reference numeral identical in whole accompanying drawing indicates identical part.Deliberately do not draw accompanying drawing by actual size equal proportion convergent-divergent, focus on purport of the present invention is shown.
Fig. 1 shows the main TV structure figure of a kind of infrared fingerprint display instrument that the embodiment of the present invention provides;
Fig. 2 shows the backsight structure chart of a kind of infrared fingerprint display instrument that the embodiment of the present invention provides;
Fig. 3 shows the side-looking structure chart of a kind of infrared fingerprint display instrument that the embodiment of the present invention provides;
Fig. 4 shows the structure chart of the detection platform of a kind of infrared fingerprint display instrument that the embodiment of the present invention provides;
Fig. 5 shows the face upwarding assumption diagram of a kind of infrared fingerprint display instrument that the embodiment of the present invention provides;
Fig. 6 shows the circuit theory diagrams of a kind of infrared fingerprint display instrument that the embodiment of the present invention provides;
Fig. 7 shows the method flow diagram of a kind of infrared fingerprint display packing that the embodiment of the present invention provides.
detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear, complete description to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The present invention is applied to the finger scan field of paper, and under normal circumstances, we are divided into three kinds the fingerprint that scene of a crime obtains: visible fingerprint, impression fingerprint and latent fingerprint.Wherein latent fingerprint is difficult to differentiate and find under normal conditions, therefore needs some to find and strengthens the method manifested, handling a case it can be made to serve investigation.
The current main indenes diketone of paper fingerprint Display Technique, the chemical reagent such as 1,2,3-indantrione monohydrate manifest, or after also having employing infra red treatment, use 445nm laser to irradiate, manifest after exciting.The ultimate principle of laser fingerprint manifestation is carried out optical excitation and is naturally present in or is attached on fingerprint material or generates with fingerprint residues thing generation chemical reaction the material possessing photoluminescent property and make it stimulated luminescence beyond being, fingerprint mastoid process streakline and background are presented a contrast thus shows or strengthen laten fingerprints.
Inventor finds when studying prior art, adopts chemical reagent, has pollution to paper.Some reagent also has health to damage to end user, and by infra red treatment, the irradiation time required different paper is different with heating-up temperature, manifests poor effect.
A kind of infrared fingerprint display instrument of the present invention as shown in Figure 1, comprise: the housing 100 of inner hollow, described housing 100 inside is provided with infrared transmitting device, detection platform 113, heater, timing means and data processing equipment, described heater is arranged in described detection platform 113, described timing means, described heater is all connected with described data processing equipment with described infrared transmitting device, described infrared transmitting device is positioned at the top of the plane of described detection platform 113, the infrared ray radiation that described infrared transmitting device sends is in described detection platform 113.In the embodiment of the present invention, described infrared transmitting device is infrared lamp, and the embodiment of the present invention comprises multiple infrared lamp, is all connected with described data processing equipment, controls lighting of described infrared lamp or extinguish by described data processing equipment.
Described detection platform 113 is positioned at bottom described housing 100, as shown in Figure 4, described detection platform 113 comprises plate body, one side of described plate body is provided with handle 112, described plate body and described housing 100 are slidably connected, and concrete connected mode is, the bottom of described housing 100 is provided with slide rail, described plate body dual-side is provided with pulley, and described plate body is connected with described slide rail by described pulley.In the present invention, described detection platform 113 drawer-like, when pulling open described detection platform 113 by described handle 112, paper to be detected is placed on the plate body of described detection platform 113.
In addition, be provided with timing in described timing means, described timing is 5-20 minute.
In addition, as shown in Figure 1, described housing 100 is provided with on and off switch 111, the rearview of the embodiment of the present invention as shown in Figure 2, described housing 100 is provided with power interface 117, described power interface 117 external power supply, and described power interface 117 is connected with described on and off switch 111, described on and off switch 111 is connected with described data processing equipment, and described power interface 117 external power supply is that described infrared fingerprint display instrument is powered.Described on and off switch 111 is the power switch of described infrared fingerprint display instrument, and in the embodiment of the present invention, described on and off switch 111 is rocker switch, more easily touches.
When specifically using, by handle 112, described detection platform 113 being pulled out, paper to be detected being laid on the plate body of described detection platform 113.Press described on and off switch 111, be that described infrared fingerprint display instrument is powered by the power supply that described power interface 117 is external, then described infrared fingerprint display instrument energising work, described heater starts heating, described infrared transmitting device sends infrared ray, be irradiated to the paper to be detected on the plate body being laid in described detection platform 113, described timing means starts timing, before the timing of described timing means terminates, described heater continuous heating, described infrared transmitting device continues to send infrared ray radiation on the paper to be detected on the plate body being laid in described detection platform 113.At a certain temperature, described infrared ray makes the component generation chemical reaction in the antiperspirant mark on described paper, namely stimulated luminescence occurs, and makes potential fingerprint become visible fingerprint.By setting different heat time heating times and light application time, described infrared fingerprint display instrument is enable to show fingerprint on the paper of different-thickness and material, with the indenes diketone of prior art, the method that the chemical reagent such as 1,2,3-indantrione monohydrate carry out manifesting is compared, effective minimizing chemical reagent, to paper and the injury to human body, effectively reduces the technology environmental pollution that chemical reagent manifests fingerprint; In addition on the one hand, the present invention arranges heating-up temperature by described data processing equipment, and the timing of timing means is set, paper according to different-thickness or material arranges different heating-up temperatures and infrared ray radiation time, make the latent fingerprint on paper fully carry out illumination chemical reaction, effectively improve the display effect of fingerprint.Moreover, as long as select different light application times and different heating-up temperatures, just can detect the latent fingerprint on the paper of all materials or thickness, make the present invention compared with prior art have wider fingerprint indication range.
In addition, fingerprint on the paper that the hole such as medicated napkin or medicated napkin is larger is by indenes diketone, the chemical reagent such as 1,2,3-indantrione monohydrate cannot show, by infrared fingerprint display instrument provided by the invention, at a certain temperature, by the latent fingerprint on the paper that the holes such as infrared ray radiation medicated napkin or medicated napkin are larger, its latent fingerprint is made to be shown as the visible fingerprint of human eye.
In addition, as shown in Figure 1 and Figure 4, the plate body of the described detection platform 113 of the embodiment of the present invention is also provided with temperature sensor 203, the outer wall of described housing is provided with temperature indicator 102, first temperature control burtons 103 and the second temperature control burtons 104, described temperature sensor 203, described first temperature control burtons 103 are all connected with described data processing equipment with described second temperature control burtons 104, and described data processing equipment is connected with described temperature indicator 102.
In the present invention, threshold temperature is preset with in described data processing equipment, described threshold temperature can be a concrete numerical value, such as 100 DEG C, also can be a numerical range, such as described threshold temperature comprises ceiling temperature and lower limit temperature, described ceiling temperature is 140 DEG C, described lower limit temperature is 80 DEG C, in the present invention, described threshold temperature is 80 DEG C to 140 DEG C, in the present invention, described threshold temperature is 120 DEG C, suitable temperature can certainly be selected according to concrete paper sheet thickness and material, the present invention provides a kind of embodiment, do not limit the concrete value of threshold temperature.
Described temperature sensor 203 detects the temperature of the plate body of described detection platform 113, when temperature is higher than described threshold temperature, the temperature of collection is transferred to described data processing equipment by described temperature sensor 203, described data processing equipment controls the heating of described heater stop, concrete control mode can be that to export the dutycycle of some cycles be that the signal of 0 is to the power end of described heater to described data processing equipment, the power end of described heater is made to continue for some time as low level, namely this time short in cannot heat, also a relay switch can be connected at the power end of described heater, a signal is exported to described relay switch by described data processing equipment, control the break-make of the relay switch of the power end of described heater, or adopt the stopping of heater described in other control mode or start heating.
In addition, press described first temperature control burtons 103, described data processing equipment detects that described first temperature control burtons 103 is pressed, described threshold temperature changed by described data processing equipment is 121 DEG C, namely often press once described first temperature control burtons 103, described threshold temperature just increases by 1 DEG C; In like manner, described second temperature control burtons 104 is for reducing described threshold temperature, and often press described second temperature control burtons 104 next time, described threshold temperature reduces by 1 DEG C.The temperature value of certain increase or minimizing can be also other numerical value, and the embodiment of the present invention only illustrates, is not limited to this.
Described temperature indicator 102 shows the temperature of described detection platform, also can show described threshold temperature.Or, can when pressing described first temperature control burtons 103 or described second temperature control burtons 104, display described threshold temperature now, recovers the temperature of the plate body of the described detection platform 113 of display after showing a second.
In addition, in the embodiment of the present invention, described housing 100 is also provided with time display 106, first timing controlled button 105 and the second timing controlled button 107, described first timing controlled button 105 is all connected with described data processing equipment with described second timing controlled button 107, and described data processing equipment is connected with described time display 106.
In the embodiment of the present invention, described timing is 20 minutes, can certainly select other timing according to paper sheet thickness and material, and the embodiment of the present invention is only enumerate an embodiment.
The embodiment of the present invention can also change the infrared ray radiation time by the first timing controlled button 105 and the second timing controlled button 107.Such as, timing is preset with, if timing is 20 minutes, after namely timing terminates in described timing means, described data processing equipment receives the triggering command that timing terminates, then stop described infrared transmitting device to launch infrared ray and described heating devices heat.When pressing described first timing controlled button 105, described data processing equipment detects that described first timing controlled button 105 is pressed, described timing changed by described data processing equipment, such as increase by one minute, described timing is made to become 21 minutes, therefore often press described first timing controlled button 105, described timing just increases by one minute.In like manner, when pressing described second timing controlled button 107, described data processing equipment makes described timing reduce one minute, makes described timing become 19 minutes.The time value of certain increase or minimizing can be also other numerical value, and the embodiment of the present invention only illustrates, is not limited to this.
Described time display 106 shows the time of described timing means, such as, reduced gradually by described timing in the mode of countdown, until be 0 or manual-lock, or with the mode timing display that numerical value increases by 0.Or, can when pressing described first timing controlled button 105 or described second timing controlled button 107, display described timing now, recovers the remaining time of the described timing means of display after showing a second.
Therefore, according to the thickness of paper or material setting threshold temperature and timing, thus heating-up temperature and the light application time of the paper to be detected be laid on the plate body of described detection platform 113 is controlled.
In addition, when described timing terminates, namely terminated by infrared ray light application time, need to be cured the fingerprint on paper, now, timing means triggers an instruction to described data processing equipment after timing terminates, described threshold temperature changed by described data processing equipment is between 180 DEG C to 260 DEG C, and control described timing means described timing is changed to 2 to 30 seconds, now, at the temperature of fingerprint on paper in detection platform 113 between 180 DEG C to 260 DEG C, continue 2 to 30 seconds, described fingerprint is solidified, visible fingerprint under being presented on common light.
In addition, described housing 100 is provided with laser beam emitting device 120, described laser beam emitting device 120 is the laser aid launching 532nm, after the infrared fingerprint display instrument latent fingerprint completed on paper provided by the embodiment of the present invention is manifested, the fingerprint manifested can also be irradiated by 532nm laser, make the fingerprint after infrared ray radiation that the material stimulated luminescence with photoluminescent property of chemical reaction not occur under 532nm laser irradiates, make the fingerprint of display more complete, effectively improve display effect.In the case, the optimum configurations of described infrared fingerprint display instrument is, temperature is set in 140 DEG C to 180 DEG C, and timing is set in 5 minutes to 10 minutes.Therefore, compared with observing with under the fingerprint after infrared ray radiation being placed directly in natural light, irradiated the method for the fingerprint after infrared ray radiation by laser, decrease the time that fingerprint manifestation consumes, display effect is better.Described laser beam emitting device 120 is detachably arranged on described housing 100, is convenient to change.
In addition, manifest under also the fingerprint after infrared ray radiation can being placed directly in natural light.
In addition, described housing 100 is also provided with alarm device, after described fingerprint has solidified, described infrared fingerprint display instrument has quit work.Before described infrared fingerprint display instrument quits work, described data processing equipment controls described alarm device and sends alarm sound, and prompting staff fingerprint display work completes, takes out paper in time.
In addition, described housing 100 is provided with watch window 101, in the embodiment of the present invention, described housing 100 is rectangle, described watch window 101 is arranged on the upper surface of the housing 100 described in Fig. 1, described watch window 101 is a through hole, the two ends of described through hole are all provided with optical glass, the similar eyepiece of described watch window 101, watch window 101 is positioned at directly over described detection platform 113, the embodiment of the present invention observes the fingerprint manifestation situation on the paper in detection platform 113 by described watch window 101, avoid user because of the thickness material misjudgment to paper, infrared ray radiation time or time of heating devices heat of setting are too high, make the temperature of paper too high and damage paper, the fingerprint manifestation situation on the paper in described detection platform 113 is observed by watch window, complete or find that paper damages at fingerprint manifestation, stop heating immediately, take out paper in time.
In addition, as shown in Figure 2, described housing 100 is provided with the first radiator fan 115, described first radiator fan 115 is connected with described data processing equipment, and the temperature value that described data processing equipment gathers according to described temperature sensor 203 controls starting or stoping of described first radiator fan 115.Heat in housing, by the process of heating devices heat, is shed by the first radiator fan 115 by the embodiment of the present invention, and temperature is heated up according to the curve of setting, and control temperature is in required scope.In addition, after completing the manifesting of fingerprint of paper, described housing 100 temperature can also be reduced by described first radiator fan 115 and drop to time needed for room temperature.
In addition, described data processing equipment is connected with described infrared transmitting device, in the present invention, described infrared transmitting device is the infrared lamp group be made up of multiple infrared lamp, described data processing equipment is connected with described infrared lamp, by the fluorescent lifetime of each infrared lamp in the Duty ratio control infrared lamp group that exports certain signal, to make the uniform illumination of the paper in described detection platform 113.
In addition, the plate body of described detection platform 113 is provided with heat pad 116, is ensured the homogeneous temperature of the paper to be detected in detection platform 113 by described heat pad 116.
In addition, as shown in Figure 5, be also provided with the second radiator fan 118 bottom described housing 100, described second radiator fan 118 is positioned at the below of the plate body of described detection platform 113.In addition, described detection platform 113 place is provided with position sensor, monitor described detection platform 113 by the position sensor being arranged on described detection platform 113 and be in open mode, namely described detection platform 113 is drawn out in described housing 100 and is positioned at described housing 100 outside, still be in closed condition, namely described detection platform 113 is positioned at described housing 100.When institute's displacement sensors detects that described detection platform 113 is positioned at housing 100, namely when described detection platform 113 is in closed condition, described second radiator fan 118 quits work, and the air-flow avoiding the work of described second radiator fan 118 to cause, damages paper to be detected; When institute's displacement sensors detects that described detection platform 113 is positioned at outside housing, namely described detection platform 113 is in open mode, and described heater and described infrared transmitting device do not work, and avoids damaging instrument.Manifesting fingerprint end-of-job, opening described detection platform 113 when described detection platform is lowered the temperature, accelerate cooling rate by described second radiator fan 118.
In addition, as described in Figure 3, the sidewall of described housing 100 is provided with louvre 114, and described sidewall is relative Fig. 1.Described louvre 114 is complete in the work of described infrared fingerprint display instrument, is convenient to described infrared fingerprint display instrument and lowers the temperature rapidly.In the embodiment of the present invention, described louvre 114 is arranged on the place of temperature Relatively centralized in described housing 100, and localized hyperthermia can shed, avoid temperature distributing disproportionation even by such as very near apart from described heater position in time.
In addition, as shown in Figure 1 and Figure 5, described housing 100 is provided with duty button 110, described duty button 110 is connected with described data processing equipment, described duty button 110 manually can stop the work of described infrared fingerprint display instrument, when the fingerprint being observed the damage of the paper on the plate body of described detection platform 113 or described paper by described watch window 101 is shown completely, press described duty button and described infrared fingerprint display instrument is quit work.
In addition, as shown in Figure 1, described housing 100 is also provided with fan control buttons 109, described fan control buttons 109 is connected with described data processing equipment, described fan control buttons 109 can control the work of described first radiator fan 115 and described second radiator fan 118, when described infrared fingerprint display instrument quits work, presses described fan control buttons 109, described first radiator fan 115 and described second radiator fan 118 are rotated, is convenient to rapid cooling.
In addition, in the embodiment of the present invention, the inwall of described housing 100 is coated with infrared light reflecting material, and the infrared light reflecting material of described housing 100 inwall coating, reflects the infrared ray be irradiated on the inwall of described housing 100, improve ultrared utilization rate.
In addition, described housing 100 is pressed and is provided with setting button 108, described setting button 108 is connected with described data processing equipment, when pressing described setting button 108, described temperature indicator 102 shows the threshold temperature of current setting, described time display 106 shows the timing of current setting, change described threshold temperature by described first temperature control burtons 103 and described second temperature control burtons 104, change described timing by described first timing controlled button 105 and described second timing controlled button 107.
Moreover the paper shown completely for fingerprint again can be put into described detection platform 113 and manifest, now must by described first radiator fan 115, described second radiator fan 118 will to room temperature by the temperature of described infrared fingerprint display instrument.
Moreover, make fingerprint display on described paper not exclusively if the reason such as not understand because of user to the thickness of paper and material, again can put into described detection platform 113 to detect, but only detect that the temperature of described detection platform 113 is in suitable scope in described temperature sensor, such as, when 140 DEG C to 180 DEG C, described data processing equipment could start described heater and described infrared transmitting device manifests described paper secondary, in the embodiment of the present invention, the time that secondary manifests is within 10 minutes.When the temperature of described detection platform 113 is lower than 140 DEG C, cannot starts secondary and manifest, the process that instrument is initial appearance according to described paper automatically operates.
The circuit theory diagrams of the infrared fingerprint display instrument shown in Fig. 1 to Fig. 5 of the present invention as shown in Figure 6, comprise: data processing equipment 200, the duty button 110 be connected with described data processing equipment 200, on and off switch 111, timing means 205, second timing controlled button 107, time display 106, first timing controlled button 105, first radiator fan 115, second radiator fan 118, infrared transmitting device 201, position sensor 202, first temperature control burtons 103, temperature indicator 102, second temperature control burtons 104, temperature sensor 203, heater 204, fan control buttons 109 and alarm device 206, described power interface 117 is connected with described on and off switch 111.
Detailed description of the invention and the concrete principle of the circuit theory diagrams shown in Fig. 6 describe in the embodiment of Fig. 1 to Fig. 4, do not repeat them here.
Data processing equipment in Fig. 6 can be a processor, such as dsp chip, ARM chip or other there is the chip of data processing function.
A kind of infrared fingerprint display packing as shown in Figure 7, comprising:
S11: start timing;
Described data processing equipment sends timing sign on to described timing means, triggers described customizing device and starts described timing.
S12: infrared ray radiation latent fingerprint;
Described data processing equipment sends and starts illumination instruction to described infrared transmitting device, triggers described infrared transmitting device and sends latent fingerprint on paper described in infrared ray radiation.
S13: heating latent fingerprint;
Described data processing equipment sends and starts heating instructions to described heater, and described heating instructions triggers paper described in described heating devices heat.
S14: whether temperature is higher than threshold temperature;
Described data processing equipment obtains the temperature information of the described detection platform that described temperature sensor gathers, if described temperature information is higher than described threshold temperature, then perform S15: stop heating, described data processing equipment sends and stops heating instructions to described heater, trigger the heating of described heater stop, and then return execution S14 step, until the temperature information that described temperature sensor gathers is lower than described threshold temperature, then perform S16.
S16: whether timing terminates;
At the end of described timing means timing, produce a timing END instruction and be sent to described data processing equipment, described data processing equipment judges whether to receive described timing END instruction, if, then terminate this method, namely send respectively and stop heating instructions to described heater to trigger the heating of described heater stop and send stopping illumination instruction to described infrared transmitting device to trigger described infrared transmitting device stopping irradiating the latent fingerprint on described paper; If not, then execution S12 step is returned.
The present invention can describe in the general context of computer executable instructions, such as program module.Usually, program module comprises the routine, program, object, assembly, data structure etc. that perform particular task or realize particular abstract data type.Also can put into practice the present invention in a distributed computing environment, in these distributed computing environment, be executed the task by the remote processing devices be connected by communication network.In a distributed computing environment, program module can be arranged in the local and remote computer-readable storage medium comprising memory device.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general accountant, they can concentrate on single accountant, or be distributed on network that multiple accountant forms, alternatively, they can realize with the executable program code of accountant, thus, they can be stored and be performed by accountant in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.Software class invention can have this section of words, otherwise deletes.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an infrared fingerprint display instrument, it is characterized in that, comprise: the housing of inner hollow, described enclosure interior is provided with infrared transmitting device, detection platform, heater, timing means and data processing equipment, described heater is arranged in described detection platform, described detection platform is also provided with temperature sensor, described temperature sensor, described timing means, described heater are all connected with described data processing equipment with described infrared transmitting device, and described infrared transmitting device is positioned at the top of the plane of described detection platform;
Described detection platform is for placing the paper of pending attachment latent fingerprint;
Described heater is for heating the pending paper in described detection platform;
Described temperature sensor is for gathering the temperature information in described detection platform;
Described infrared transmitting device is used for sending infrared ray, irradiates the latent fingerprint on described pending paper;
Described timing means is for starting the timing of internal preset, and described timing is the working time of described heater and described infrared transmitting device;
Described data processing equipment is used for sending instruction to described heater and described timing means, triggers the start and stop of described heater and described timing means, also for receiving the temperature information that described temperature sensor gathers;
Be provided with threshold temperature in described data processing equipment, when described temperature information is higher than described threshold temperature, trigger the heating of described heater stop.
2. infrared fingerprint display instrument according to claim 1, it is characterized in that, the outer wall of described housing is provided with temperature indicator, the first temperature control burtons and the second temperature control burtons, described first temperature control burtons is all connected with described data processing equipment with described second temperature control burtons, and described data processing equipment is connected with described temperature indicator;
Described first temperature control burtons, for triggering described data processing equipment, makes described threshold temperature increase;
Described second temperature control burtons, for triggering described data processing equipment, makes described threshold temperature reduce.
3. infrared fingerprint display instrument according to claim 1, it is characterized in that, the outer wall of described housing is provided with time display, the first timing controlled button and the second timing controlled button, described first timing controlled button is all connected with described data processing equipment with described second timing controlled button, and described data processing equipment is connected with described time display;
Described first timing controlled button, for triggering described data processing equipment, makes described timing increase;
Described second timing controlled button, for triggering described data processing equipment, makes described timing reduce.
4. according to arbitrary described infrared fingerprint display instrument of claim 1-3, it is characterized in that, described housing is provided with watch window, described watch window comprises the through hole of both ends open, the two ends of described through hole are all provided with optical glass, the one end open of described through hole is positioned at described surface of shell, and other end opening is positioned at the top of described detection platform.
5. infrared fingerprint display instrument according to claim 2, is characterized in that, described housing is provided with the first radiator fan, and described first radiator fan is connected with described data processing equipment.
6. infrared fingerprint display instrument according to claim 1, is characterized in that, described detection platform is positioned at described housing bottom, and described detection platform comprises plate body, and a side of described plate body is provided with handle, and described plate body and described housing are slidably connected; Described housing bottom is also provided with the second radiator fan, and described second radiator fan is connected with described data processing equipment.
7. infrared fingerprint display instrument according to claim 6, is characterized in that, the surface of described plate body is equipped with heat pad, and described inner walls is coated with infrared light reflecting material.
8. the infrared fingerprint display instrument according to claim 6 or 7, it is characterized in that, the junction of described plate body and described housing is provided with position sensor, shown position sensor is connected with described data processing equipment.
9. infrared fingerprint display instrument according to claim 1, is characterized in that, described housing is also provided with laser beam emitting device.
10. an infrared fingerprint display packing, it is characterized in that, be applied to infrared fingerprint display instrument, described infrared fingerprint display instrument comprises infrared transmitting device, detection platform, temperature sensor, heater, timing means and data processing equipment, timing is preset with in described timing means, described temperature sensor and described heater are arranged in described detection platform, described detection platform is equipped with pending paper, described pending paper is attached with latent fingerprint, threshold temperature is provided with in described data processing equipment, described method comprises:
Described data processing equipment sends timing sign on to described timing means, triggers described customizing device and starts described timing;
Described data processing equipment sends and starts heating instructions to described heater, and described heating instructions triggers paper described in described heating devices heat;
Described data processing equipment sends and starts illumination instruction to described infrared transmitting device, triggers described infrared transmitting device and sends latent fingerprint on paper described in infrared ray radiation;
Described data processing equipment obtains the temperature information of the described detection platform that described temperature sensor gathers, if described temperature information is higher than described threshold temperature, then send and stop heating instructions to described heater, trigger the heating of described heater stop, until the temperature information that described temperature sensor gathers is lower than described threshold temperature;
Described data processing equipment obtains the timing END instruction that described timing means sends, and terminates to perform this method.
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| CN104352241B (en) | 2017-01-11 |
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Effective date of registration: 20170303 Address after: Hangzhou City, Zhejiang Province, Jianggan District Shandong road 310020 Gen Jianhua district two, building 4, floor two Patentee after: Hangzhou Hengli Electronic Technology Co., Ltd. Address before: 310000 Hangzhou City, Jianggan District province people's village, building 1, room, unit 602, room 2 Patentee before: Song Zhihong |