CN211235552U - Iodine vapor fingerprint detection device - Google Patents
Iodine vapor fingerprint detection device Download PDFInfo
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- CN211235552U CN211235552U CN201921882951.0U CN201921882951U CN211235552U CN 211235552 U CN211235552 U CN 211235552U CN 201921882951 U CN201921882951 U CN 201921882951U CN 211235552 U CN211235552 U CN 211235552U
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Abstract
The utility model discloses an iodine vapor inspection fingerprint device, its characterized in that includes two temperature control platforms, development box, control module, photo resistance and emitting diode, two temperature control system platforms contain development room and condensation chamber, the development box smokes box, transparent fingerprint apron and iodine grain including transparent iodine, the development room is through heating the development box makes the iodine grain sublimation, the condensation chamber cooling the development box makes the steam desublimation, the heating of development room and the refrigeration of condensation chamber by control module control, emitting diode and photo resistance arrange in the development room in the development box place the both sides of position, photo resistance with control module links to each other, and when the analog voltage of photo resistance output reached the control module internal setting value, control module output stop signal makes the development room stop heating. Compared with the prior art, the utility model beneficial effect be that develop the gentle controllable excessive problem of developing of excessive iodine of the gentle solution of sublimation of effectual, iodine grain.
Description
Technical Field
The utility model belongs to the technical field of the teaching experiment instrument and specifically relates to an iodine vapor inspection fingerprint device.
Background
In high school chemistry teaching, a commonly used method for displaying fingerprints is an iodine steaming method, i.e. iodine pellets are put into a test tube with a paper strip printed with fingerprints, the test tube is heated by an alcohol lamp, heating is stopped after iodine vapor is generated, and fingerprint prints displayed on the paper strip are observed. This test protocol has the advantage of being simple and easy to operate, but also has the following drawbacks: the heating temperature of the alcohol lamp is difficult to control, so that the fingerprint development is not uniform, the iodine vapor is directly adsorbed on the paper and cannot be reused, the phenomenon of excessive iodine fumigation development is easily caused, and the problem of iodine vapor emission is caused.
Based on the above series of problems, the following technical solutions have been developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the aforesaid not enough, provide an iodine vapour inspection fingerprint device, adopt water bath method or air heating method to the inferior gram force board heating and the cooling of being printed with the fingerprint in the container, distinguish the color development degree of fingerprint with the photoelectricity colorimetry, with the temperature of single chip microcomputer control heater and distinguish the fingerprint. The device can achieve better developing effect, can be repeatedly used, and simultaneously solves the problem of iodine vapor emission.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides an iodine vapor inspection fingerprint device, its characterized in that includes two temperature control platforms, development box, control module, photo resistance and emitting diode, two temperature control system platforms contain development room and condensation chamber, the development box smokes box, transparent fingerprint apron and iodine granule including transparent iodine, the development room is through the heating the development box makes the iodine granule sublimation, the condensation chamber cooling the development box makes steam desublimation, the heating of development room and the refrigeration of condensation chamber by control module control, emitting diode and photo resistance place the both sides that the development box placed the position in the development room in, photo resistance with control module links to each other, and when the analog voltage of photo resistance output reached the control module internal setting value, control module output stop signal made development room stop heating.
Furthermore, the developing chamber comprises a temperature sensor, the temperature sensor is connected with the control module, and when the temperature value reaches the set value in the control module, the control module outputs a stop signal to stop heating the developing chamber.
Furthermore, an opening cover plate is arranged at the upper end of the double-temperature control platform, and openings with the size equal to that of the top of the developing box are respectively arranged on the opening cover plate in the developing chamber and the condensing chamber so as to facilitate the insertion and the taking out of the developing box.
Furthermore, a heat-insulating cover plate with the size equivalent to that of the opening is arranged at the opening of the condensation chamber part.
Further, the outside control panel who is connected with control module that contains of two temperature control platforms, last display screen and the button of being equipped with of control panel, the button can be to the interior value of setting up of control module input, the display screen can show the analog voltage of temperature and photo resistance output.
Further, the light emitting diode is a blue light emitting diode.
Further, the control module is a single chip microcomputer.
Furthermore, the transparent iodine fumigation box and the transparent fingerprint cover plate are made of acrylic plate materials.
Further, the developing chamber heats the developing cartridge by a water bath method.
Further, the developing chamber heats the developing cartridge by a hot air method.
Furthermore, the iodine vapor fingerprint detection device is characterized by further comprising a semiconductor refrigeration sheet arranged between the condensing chamber and the developing chamber, wherein the refrigeration end of the semiconductor refrigeration sheet is arranged on one side of the condensing chamber, and the heat dissipation end of the semiconductor refrigeration sheet is arranged on one side of the developing chamber.
Further, the fingerprint development iodine fumigation box is made of acrylic plates.
Compared with the prior art, the utility model beneficial effect be that develop the gentle controllable excessive problem of developing of excessive iodine of the gentle solution of sublimation of effectual, iodine grain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a control circuit of a single chip microcomputer according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of an embodiment of the present invention;
fig. 3 is a schematic view of an iodine fumigating box with fingerprint development according to an embodiment of the present invention.
Wherein, 1-1 developing chamber; 1-2 condensation chambers; 1-3, 1-4 opening cover plates; 1-5 of a heat preservation cover plate; 1-6 console outer shell; 2-1 single chip microcomputer; 2-2 photoresistors; 2-3 blue LEDs; 2-4, 2-5 temperature sensors; 2-6 semiconductor refrigerating sheets; 2-7 temperature alarm indicator lamps; 2-8 power switches; 2-9 button groups; 2-10 liquid crystal display screen; 3, switching a power supply; 4-1T-shaped cover plate; 4-2 iodine fumigating box; 4-3 fingerprint detection board; 4-4 cover plates; 4-5 pressing lines for fingerprints.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides an iodine vapor inspection fingerprint device. The technical solution provided by the present invention will be explained in more detail with reference to fig. 1 to 3.
As shown in figure 1, the 2-singlechip control circuit consists of a 2-1 singlechip, a 2-2 photoresistor, a 2-3 blue LED, 2-4 and 2-5 temperature sensors, a 2-6 semiconductor refrigerating sheet, a 2-7 temperature alarm indicator lamp, a 2-8 power switch, a 2-9 button group and a 2-10 liquid crystal display screen.
The 2-1 single chip microcomputer I2C signal line is in signal connection with a 2-10 liquid crystal display screen I2C, the 2-1 single chip microcomputer is in single-bus connection with a 2-4 temperature sensor and a 2-5 temperature sensor, an ADC pin of the 2-1 single chip microcomputer is connected with an output pin of the 2-2 photoresistor component, the 2-1 single chip microcomputer is connected with a 2-9 button group button, the 2-1 single chip microcomputer is connected with a 2-7 temperature alarm indicator lamp, and the 2-1 single chip microcomputer is connected with a driving triode of a 2-6 semiconductor refrigerating piece module.
The 2-3 blue light LED adopts blue light because the developed fingerprint on the fingerprint detection plate is brown yellow, and blue is a complementary color of brown yellow, so that the best observation effect can be achieved.
The 3-switch power supply outputs a 5V power supply, the 5V power supply is connected with the 2-1 single chip microcomputer, the 2-10 liquid crystal display screen, the 2-4 and 2-5 temperature sensor power supplies and provides the 5V power supply, and the 5V power supply is connected with the 2-6 semiconductor refrigerating chip module, the 2-2 photosensitive resistor assembly, the 2-3 blue light LED assembly and the 2-9 button group to provide 5V voltage.
As shown in FIG. 2, the 1 dual-temperature control console consists of 1-1 developing chamber, 1-2 condensing chamber, 1-3 and 1-4 opening cover plates, 1-5 heat preservation cover plates and 1-6 console shell.
The 2-2 photoresistor and the 2-3 blue light LED are arranged on the inner wall of the 1-1 developing chamber.
The 2-6 semiconductor refrigerating sheet is arranged between the 1-1 developing chamber and the 1-2 condensing chamber, the refrigerating end of the 2-6 semiconductor refrigerating sheet is arranged on one side of the 1-2 condensing chamber, and the heat dissipation end is arranged on one side of the 1-1 developing chamber.
As shown in FIG. 3, the 4-fingerprint development iodine fumigation box comprises a 4-1T-shaped fingerprint cover plate and a 4-2 iodine fumigation box, the 4-1T-shaped fingerprint cover plate comprises a 4-3 fingerprint detection plate and a 4-4 cover plate, and 4-5 fingerprint detection lines are engraved on the 4-3 fingerprint detection plate.
4 fingerprint development iodine smokes box and makes by the ya keli board, the ya keli board is better than smooth white paper development effect, only has the iodine vapour to adhere to in the place of printing the fingerprint, consequently observes more easily than smooth white paper, and repeatedly usable. While the smooth white paper will adsorb iodine vapor and is not reusable. Therefore, the problems of developing effect and repeated use can be solved by adopting the acrylic plate.
The following is a description of the specific working of the mechanism:
when the 2-8 power switch is closed, the 3-switch power supply outputs a 5V power supply to supply the power supply of the 2-1 singlechip control circuit, the 2-6 semiconductor refrigerating sheet is arranged between the 1-1 developing chamber and the 1-2 condensing chamber, wherein the refrigerating end of the 2-6 semiconductor refrigerating sheet is arranged on one side of the 1-2 condensing chamber, the heat dissipation end is arranged on one side of the 1-1 developing chamber, the acrylic plate printed with the fingerprints in the container is heated by a hot air method, the sublimation temperature and the controllability of iodine particles can be realized, and the excessive and fuzzy fingerprint development of iodine vapor on the acrylic plate is prevented.
The 2-1 singlechip controls the room temperature of the 1-1 developing chamber to work within a set value range through a 2-4 temperature sensor of the 1-1 developing chamber. Heating and cooling the fingerprint-printed acrylic plate in the container by water bath method or air heating method
Setting a temperature value of preheated air through a 2-9 button group, heating a heat dissipation end of a 2-6 semiconductor refrigerating sheet by a fan in a 1-1 developing chamber, inserting a 4-fingerprint development iodine fumigation box filled with iodine granules into a 1-3 opening cover plate when the temperature displayed by a 2-10 liquid crystal display screen reaches a preset temperature value, heating and sublimating the iodine granules of the 4-fingerprint development iodine fumigation box, displaying a brownish yellow fingerprint on a 4-3 fingerprint detection plate, enabling blue light of a 2-3 blue light LED to reach a 2-2 photosensitive resistor through the 4-3 fingerprint detection plate, outputting analog voltage to a 2-1 single chip microcomputer by the 2-2 photosensitive resistor, and displaying the current value by the 2-10 liquid crystal display screen; along with the increase of the concentration of the iodine vapor, the brown yellow on the 4-3 fingerprint detection plate changes from light to deep, the resistance value of the 2-2 photoresistor changes along with the change of the voltage of the ADC pin of the 2-1 single chip microcomputer, the number displayed by the 2-10 liquid crystal display screen gradually approaches to the internal value until the preset value of the program is reached, the 2-7 temperature alarm indicator lamp is turned on, the 2-1 single chip microcomputer outputs a stop signal to control the driving circuit of the 2-6 semiconductor refrigeration piece module to cut off the heat source, the 1-5 heat insulation cover plate of the 1-2 condensation chamber is opened, the 4 fingerprint development iodine box is rapidly placed into the opening of the 1-4 opening cover plate, the iodine vapor in the 4-2 iodine fumigation box is subjected to condensation and sublimation, and the fingerprints on the 4-5 fingerprint development detection plate.
The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is familiar with the technical scope of the present invention, and according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (11)
1. The utility model provides an iodine vapor inspection fingerprint device, its characterized in that includes two temperature control platforms, development box, control module, photo resistance and emitting diode, two temperature control system platforms contain development room and condensation chamber, the development box smokes box, transparent fingerprint apron and iodine granule including transparent iodine, the development room is through the heating the development box makes the iodine granule sublimation, the condensation chamber cooling the development box makes steam desublimation, the heating of development room and the refrigeration of condensation chamber by control module control, emitting diode and photo resistance place the both sides that the development box placed the position in the development room in, photo resistance with control module links to each other, and when the analog voltage of photo resistance output reached the control module internal setting value, control module output stop signal made development room stop heating.
2. The iodine vapor fingerprint inspection device of claim 1 wherein said developing chamber includes a temperature sensor, said temperature sensor is connected to said control module, said control module outputs a stop signal to stop heating said developing chamber when a temperature value reaches a control module setting.
3. The iodine vapor fingerprint inspection device of claim 1 wherein said dual temperature control stage has an open cover plate at the upper end thereof, said open cover plate having openings in the developing chamber and the condensing chamber respectively of a size corresponding to the top of the developing cartridge for easy insertion and removal of the developing cartridge.
4. The iodine vapor fingerprint inspection device of claim 3 wherein said condensation chamber portion has an opening with a heat retaining cover of a size corresponding to the opening.
5. The iodine vapor fingerprint detection device as claimed in claim 1, wherein said dual temperature console comprises a control panel connected to said control module, said control panel is provided with a display screen and a button, said button can input the preset value to said control module, said display screen can display the temperature and the analog voltage outputted by said photo resistor.
6. The iodine vapor testing fingerprint device of claim 1 wherein said light emitting diode is a blue light emitting diode.
7. The iodine vapor fingerprint verification apparatus of claim 1 wherein said control module is a single chip.
8. The iodine vapor testing fingerprint device as claimed in any one of claims 1 to 7 wherein said transparent iodine fumigation chamber and said transparent fingerprint cover plate are made of acrylic plate material.
9. The iodine vapor fingerprint inspection device according to any one of claims 1 to 7, wherein said developing chamber heats said developing cartridge by a water bath method.
10. The iodine vapor fingerprint authentication device as claimed in any one of claims 1 to 7, wherein said developing chamber heats said developing cartridge by a hot air method.
11. The iodine vapor fingerprint detecting device as recited in claim 10, further comprising a semiconductor refrigerating sheet disposed between the condensing chamber and the developing chamber, the semiconductor refrigerating sheet having a refrigerating end disposed at one side of the condensing chamber and a heat dissipating end disposed at one side of the developing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921882951.0U CN211235552U (en) | 2019-11-04 | 2019-11-04 | Iodine vapor fingerprint detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921882951.0U CN211235552U (en) | 2019-11-04 | 2019-11-04 | Iodine vapor fingerprint detection device |
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| CN211235552U true CN211235552U (en) | 2020-08-11 |
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| CN201921882951.0U Active CN211235552U (en) | 2019-11-04 | 2019-11-04 | Iodine vapor fingerprint detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954529A (en) * | 2019-11-04 | 2020-04-03 | 厦门市集美区乐安中学 | Iodine vapor fingerprint detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954529A (en) * | 2019-11-04 | 2020-04-03 | 厦门市集美区乐安中学 | Iodine vapor fingerprint detection device |
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