KR101079672B1 - Portable fingerprint detection device using heater and fingerprint detection method using the same - Google Patents

Abstract

PURPOSE: A portable fingerprint detection device using a heating device is provided to secure an evidence in a field by instantly correcting fingerprint in a crime scene. CONSTITUTION: A control box(200) installed on one side of a box main body controls a fingerprint display device. A handle(300) is installed in the central part of the main body. A transparent plate(400) formed on the upper and side part of the main body displays the state of a fumigation/adherence. The closely adhering part covers the edge part of the main body which contacts the bottom. Electric heating appliances fumigate or evaporate iodine power of CA(Cyano Acrylate) solution.

Description

Portable Fingerprint Detection Device Using Heater and Fingerprint Detection Method Using the Same}

The present invention relates to a portable fever fingerprint display device and a fingerprint display method using the device. In particular, in preparation for evidence trialism, trial-centered attention, and a changing judicial environment, evidence of oil spilled at the crime scene can be efficiently and directly on-site. Portable fever fingerprint display device and fingerprint display using this device to secure crime proof data by fingerprinting with CA (Cyano Acrylate), Iodine (Iodine) gas method with participation It is about a method.

In general, since human fingerprints are not the same, various systems that can be applied to real life using them have been developed. In other words, the human fingerprint is a raised flow of sweat glands, and since the immutability and uniqueness of each person's unique appearance are maintained for a lifetime, it is an efficient means of authentication in terms of reliability and stability. have. Therefore, the fingerprint data of all people are secured on the resident registration card and used as proof of identity, and it is widely applied to criminal investigation. In recent years, new technologies for security systems and security systems through biometrics including fingerprints have been developed and applied to various fields. In particular, fingerprints are the definitive evidence for finding the culprit in the event of an accident or accident. Therefore, if an incident or accident occurs, the fingerprints of the criminal's fingerprints will be collected. Fingerprints will be displayed by using a fingerprint presenter. The detected fingerprint is compared with the fingerprint stored in the fingerprint control device to investigate the criminal.

As a method of presenting such a fingerprint, the powder method, which is the solid method, the ninhydrin solution method and the silver acetate method, which is a liquid method, the detection method by the undo gas, the gas method, and the bond method (a strong instant adhesive method) and ox The mic acid method is proposed.

The powder method is a method of detecting latent fingerprints by spraying fine powder on an object with fingerprints.

The ninhydrin solution method causes the action of the violet color development to occur in the amino acids contained in the sweat. This is when the ninhydrin solution is poured into a stainless container, soaked in a sample, and soaked two minutes later. The solution is evaporated and heated for about 1 minute to detect latent fingerprints.

The silver acetate solution method is a method of reacting silver acetate solution with salts contained in sweat and then detecting it with purple light by detecting the fingerprint. This is poured into a stainless steel container and immersed in a stainless container and wetted. After 10 minutes, the liquid drips and drips into the sun for about 3 to 4 minutes to reveal fingerprints.

The detection method using iodine gas is a method of detecting the fingerprint through the coloring of dark brown when iodine gas is used to act on the fat content of latent fingerprints (secretions).

The bond method (strong instant adhesive method, CA method) is a method in which a white latent fingerprint is detected by chemical reaction with salts, fats and proteins contained in the fingerprint by the vapor of the bond.

The osmic acid solution method is a method in which a black latent fingerprint is detected by causing a chemical reaction to occur in the secretion of the fingerprint by the vapor of the osmic acid.

The DFO (2,8-DIAZAFLUOREN-9-ONE) method is a known method of reacting with amino acids in body proteins to express fingerprints.

However, for fingerprint identification, the identification system is collected at the crime scene, and the fingerprint is collected by the air purifying fingerprint display container. At this time, because conveying the persimmons to the subtractive vehicle, the air conditioner is operated in the summer and the air conditioner in the winter, so that drying and condensation may occur and fingerprints may be damaged by friction of the persimmon during the process of moving to the vehicle. Since it is difficult for witnesses to attend because they are reluctant to be witnesses of crimes, they are distrusted in using fingerprints as evidence of crimes.

In addition, most of the current equipment is imported and expensive, and the accessories used in the equipment are disposable, so there is no practicality, which causes inefficiency and increases the national budget.

In the case of the CA (Cyano Acrylate) gas method to go to the laboratory to perform identification, there is a problem such as drying, condensation or damage during the movement of the plant and difficult to participate in the witness.

Fixed objects such as large objects and walls cannot be moved and cannot be processed with the CA gas process. Also, non-porous cans such as refrigerated cans and glass can be condensed when exposed to room temperature. The fingerprints will be damaged and the fingerprints will fail.

In addition, it is not portable and the gas injection fingerprint display is portable, but it is affected by the wind, so it can be scattered into the snow, cannot recognize a large amount at a time, and has to shine a separate light at night. Fingerprint display machine is a high-priced imports, because it requires a separate disposable accessories there is a problem of high maintenance costs.

In the case of the iodine fumigation method, since the laboratory moves to perform the identification, there is a problem such as drying, condensation, or damage during the movement of the plant, and the participation of the witness is difficult.

In addition, the object to be collected is thermal paper, decompression paper, various receipts, papers, business cards, etc., the iodine whistle blows out the mouth, so there is a weakness to health. In addition, since the entrance of the iodine decanter is narrow, a large amount of persimmons cannot be exhibited at one time and there is a problem that it takes a long time. In addition, iodine whiskers are expensive imports and have a problem of being expensive as disposable.

Thermal paper, etc., is sensitive to temperature changes when using a ninhydrin solution reagent, so that it is impossible to appear, and there is a problem that ink is smeared and interferes with handwriting.

The use of magnetic powder on thermal paper, etc., results in good fingerprints, but there is a time constraint to apply powder one by one.

The present invention has been made under the above-mentioned background, and in preparation for evidence trialism, trial-centeredism and a changing judicial environment, the evidences flowed from the crime scene efficiently and directly on the spot with the participation of CA (Cyano Acrylate) Iodine The purpose of the present invention is to provide a portable fever fingerprint display device and fingerprint display method using the device which can secure crime proof data by strengthening forensic investigation by acquiring fingerprint by gas method.

In addition, it is practical because large objects, fixed objects such as walls, and movable objects can be fingerprinted by CA and iodine gas methods as they are found in the form of prototypes, which are preserved in the crime scene with the participation of the witness. Another object of the present invention is to provide a portable heating fingerprint display device capable of securing reliability and a fingerprint display method using the device.

In addition, by developing high-tech equipment customized for crime scenes, it can be expanded and distributed nationwide at a low price to dramatically reduce the national budget and inform the excellence of domestic scientific investigation equipment. Another object of the present invention is to provide a portable exothermic fingerprint display device and a fingerprint display method using the device. .

Portable fever fingerprint display device of the present invention according to an embodiment of the present invention for solving the above problems, a portable fever fingerprint display device for recognizing the fingerprint of the object, the box-shaped body forming the appearance of the device; A control box mounted to one side of the main body to control the fingerprint display device; A handle installed at the center of the upper surface of the main body and used to move the device; A transparent plate formed on the upper and side surfaces of the main body to immediately check the fumigation fixation state; An adhesion part surrounding a main body edge which is in contact with the floor; And a plurality of heaters that generate heat to vaporize and fumigation by iodine (iodine) powder or CA (cyano acrylate) solution.

Fingerprint expression method of the present invention according to another embodiment of the present invention for solving the above problems, Iodine powder (Iodine) powder or CA (Cyano Acrylate) by putting the body to recognize the fingerprint in the body Charging the solution into a plurality of heaters; Applying a pulse width modulation (PWM) type power to a plurality of heaters by supplying power to the apparatus using an operation switch and turning on a heater switch; Adjusting a temperature control switch to display a set value on an LED display device by adjusting a temperature of heaters to be used; Reading temperature sensing values of the heaters from the temperature sensors attached to the heaters by the control unit, measuring the temperature of the heaters, and continuously applying PWM power to the heaters through the FET switch until the preset temperature is reached; When the preset temperature value is reached, decreasing or increasing the PWM power by the controller to maintain the set temperature constant; And the CA or iodine powder poured into the heaters vaporized in the main body of the apparatus, diffused throughout the apparatus, and the vaporized smoke adhered to the fingerprint section attached to the perception object placed in the main body, thereby causing the fingerprint to be exposed. A fingerprint presenting method is provided.

According to the present invention, the evidence of the crime can be secured at the scene by immediately presenting the fingerprint at the crime scene with the participation of the witness, and can be fixed at the site regardless of the type of plant such as a fixed plant or a removable plant. Fingerprints can be displayed, for example, small objects such as cards and business cards can be attached to or detached from a magnet mounting hanger on the top of the device to display fingerprints. It is possible to collect good fingerprints by spontaneously drying the fingerprints without changing their position (about 1 hour), and it is easy to carry, and it is easy to carry. It can be displayed and the fumigation status can be easily checked by using LED lights at night. In addition, by using the rechargeable battery as a power source, it can be used semi-permanently, contributing to national budget savings, better display ability than any reagents, no need of fixer, and no perception of handwriting. You can get a breakthrough effect that can be manifested.

1 is a perspective view of a portable heating fingerprint display device of the present invention.
Figure 2 is a perspective view showing the internal configuration of the portable heating fingerprint display device of the present invention.
3 is a view showing in detail the A-shaped holder and the magnet holder.
4 is a block diagram of a control box of the portable heating fingerprint display device of the present invention.
FIG. 5 is a view showing a state in which papers are attached to a-shaped hanger of the portable heating fingerprint display device of the present invention.

Hereinafter, a portable heating fingerprint display device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or similar reference numerals are given to the same or similar parts.

1 is a perspective view of a portable heating fingerprint display device of the present invention.

As shown in the figure, the portable heating fingerprint display device 1000 of the present invention includes a box-shaped body 100 forming the appearance of the device, the body 100 is known domestically and internationally for its superiority We use Hanji, our traditional craft. The reason for using Hanji is that it has a tough and solid feature without being discolored, deteriorated or worn out by temperature change even after long use. In addition, it is light in weight, easy to carry, and waterproof to prevent the absorption of water. The device 1000 is mounted on one side of the main body 100 to control the fingerprint display device 1000, and is installed in the center of the upper surface of the main body 100 to be used to move the device 1000. It includes a handle 300 using a light and solid wood, but is not limited to wood, any of which may be equivalent. In addition, the device 1000 is formed on the upper surface and the side of the main body 100 includes a transparent plate 400 that can immediately check the fumigation fixed state is composed of a polycarbonate. Polycarbonate is 30 times stronger than acrylic, 150 times stronger than tempered glass, and specially coated on the surface to resist temperature changes. Apparatus 1000 also includes a close contact 500 that encloses a body rim that abuts the floor. When the close contact portion 500 is put into the main body 100 and the gas method and the bond method are performed, the fumigation does not leak between the close contact portion 500 and the bottom so that the adhesiveness is good and the rubber is good. In the middle, a strong magnetic force is planted in the middle so that the device 1000 can be attached to an iron door, a car door, and the like. The number of magnets can be about 10, but the device should be attached to the iron door, etc. so as not to fall freely, it is not limited to about 10.

The control box 200 may be injected into a plastic mold as a constant current pulse width modulation (PWM) power control device. The control box 200 will be described in detail in the block diagram described later, but the operation switch 201 as a system power switch of the apparatus 1000, the temperature control switch 202 for controlling the temperature of the electric heaters 1 and 2 described below. And an electric heater 1,2 switch 203 for turning on / off the power of the electric heaters 1, 2, an LED lamp switch 204 for turning on / off an LED lighting lamp described later, and an LED display device 205. The heaters 1 and 2 switch 203 are toggle switches. When the heater 1 is turned upward, the heater 1 is turned on. When the heater 1 is turned down, the heater 2 is turned on, and the neutral turns off the heaters 1 and 2.

Figure 2 is a perspective view showing the internal configuration of the portable heating fingerprint display device of the present invention.

In the drawing, the knob 110 is a handle for sliding the wiring cover 120 that can be opened and closed in a sliding manner. The wiring cover 120 other than the wiring cover including the knob 110 is fixed and detachable. LED lighting lamp 212 is installed inside the wiring cover 120, so it is not necessary to illuminate the lights during the day, so the wiring cover 120 is closed so that it is covered with the cover 120, and at night, the fumigation of fingerprints in the perception plant Open the wiring cover 120 so that you can check the light to illuminate. Heater 1 (210) and heater 2 (211), which will be described in detail later, are heating devices that generate heat to vaporize and fumigation with an iodine powder or a CA (Cyano Acrylate) solution. A chair 140 and the magnet holder 150 is a mechanism that serves as a forceps when presenting the small objects such as paper, thermal paper, business cards, cards, bags, wallets. One side of the a chair holder 140 is attached to a permanent magnet (not shown) implanted in the center width direction of the rear surface of the upper surface of the main body, and the other side of the chair a chair is attached to the magnet holder 150. 150) and the a-shaped chair 140 to sandwich the paper to be recognized. When the paper is fixed to the magnet holder, the fumigation is evenly contacted with the paper, thereby increasing the recognition effect. Heaters 1 and 2 (210 and 211) may be attached to the heat generating protection plate for protecting the heater made of ceramic.

In addition, the pistol ring 130 is a hook for hanging a heavy object such as a pistol.

3 is a view showing in detail the A-shaped holder and the magnet holder.

4 is a block diagram of a control box of the portable heating fingerprint display device of the present invention.

As shown in the drawing, the control box 200 includes an operation switch 201, a heater 1, 2 switch 203, an LED lamp switch 204, an LED display device 205, a rechargeable battery 206, and a power supply 207. ), A control unit 208, field effect transistor (FET) switches 209 and 209, heaters 1 and 2 (210 and 211), temperature sensors 210a and 211a, and LED lighting lamps 212.

The operation switch 201 may be a dip switch as a switch that supplies or cuts power to the entire apparatus 1000 except for the heaters 1 and 2 and the LED lighting lamp 212, but is not limited thereto. The heaters 1 and 2 switches 203 supply or cut off power to the heaters 1 and 2 210 and 211 and the sensors 210a and 211a as described above. The LED lighting lamp switch 204 may be a dip (DIP) switch or the like as a switch for supplying or cutting off power to the LED lighting lamp 212, but any function may be used. The temperature control switch 202 is a switch for controlling the temperature of the heaters 1, 2 (210, 211), but may be a volume including a variable resistor, but is not limited thereto. The LED display 205 displays the temperature of the heaters 1, 2 (210, 211) sensed by the temperature sensors 210a, 211a, the remaining battery capacity of the rechargeable battery 206, and the inspection status of the system, that is, the device 1000. Etc. can be. The LED display 205 is a seven segment display. The rechargeable battery 206 is a rechargeable battery that can be used by connecting two DC3.9V batteries in series, but is not limited thereto. The power supply 207 is a device for supplying power to the device 1000 and the heaters 1, 2 (210, 211) and may be configured as a DC-DC converter or may have other configurations. The power supply 207 can convert the DC power from the power supply 206 to 3V or 5V, typically to convert the voltage to a suitable voltage for the device. The FET switches 209 and 209 supply PWM power to the heaters 1 and 2 210 and 211 according to the command of the controller 208. Heaters 1 and 2 (210 and 211) are Peltier devices that generate heat using the Peltier effect. The LED lighting lamp 212 is a device for illuminating the illumination of the device 1000 when performing identification at night.

On the other hand, the control unit 208 is a device for controlling the entire system, that is, the temperature setting of the heaters 1, 2 (210, 211), the LED display device 205, and the temperature received from the temperature sensors 210a, 211a. Analyze and adjust the temperature to a constant temperature, and check the state of the operation switch 201, the heaters 1 and 2 switches 203, the lamp switch and the temperature control switch 202, and to the heaters 1, 2 (210, 211). It is a microcomputer that controls the PWM power supply and also performs status checks on other devices.

Next, the operation of the portable heating fingerprint display device of the present invention will be described.

First, the identification object to identify the fingerprint is put into the body (100). For example, in the case of paper, it hangs on the upper surface of the main body 100 using the A-shaped hanger 140 and the magnet holder 150. Iodine powder or Cyano Acrylate (CA) solution is then charged to Heaters 1,2 (210 or 211). When power is supplied to the apparatus using the operation switch 201 and the power of the heaters 1 and 2 switches 203 is turned on, the PWM type power is applied to the heaters 1, 2 (210 or 211) via the control unit 208. . That is, the temperature of the heaters 1, 2 (210 or 211) is adjusted by controlling the amount of current supplied to the heaters 1, 2 (210 or 211) by adjusting the duty rate of the pulses by the PWM control method. At this time, the heater 1, 2 switch 203 is adjusted up or down depending on which heater to use. In this state, the temperature control switch 202 may be adjusted to adjust the temperature of the heater 1 or 2 (210 or 211) to be used. At this time, the set temperature value is displayed on the LED display device 205. For example, when the temperature to be used is 150 degrees, the temperature control switch 202 is adjusted to display 150 degrees on the LED display device 205. The temperature value to be set should be set to a temperature value that allows the CA solution or iodine powder poured into the heater 1 or 2 (210 or 211) to be vaporized best. Then, the controller 208 reads the temperature sensing values of the heaters 1 and 2 (210 and 211) from the temperature sensors 210a and 211a attached to the heaters 1 and 2 (210 and 211). Measure the temperature of and continuously apply the PWM power to the heaters 1, 2 (210 or 211) through the FET switch 209 until the preset temperature is 150 degrees. When the preset temperature value is reached, the controller 208 decreases or increases the PWM power to keep the set temperature constant and sends a signal to the LED display 205 to cause the display device to flash briefly. It can be seen that the heaters 1 or 2 (210, 211) have reached the set temperature.

Then, the CA or iodine powder poured into the heaters 1, 2 (210 or 211) is vaporized in the body 10 of the apparatus 1000, diffused all over the inside of the apparatus, and the fingerprint portion deposited on the perception plant placed in the body 100. The vaporized smoke is stuck to the fingerprint. In addition, when the heater 1.2 switch 203 is in a neutral state while the operation switch 201 of the device of the present invention is turned on, the LED display device 205 does not display the temperature of the heaters 1 or 2 (210 or 211) but the battery. The system checks such as remaining charge, sensor failure, and low battery.

FIG. 5 is a view showing a state in which papers are attached to a-shaped hanger of the portable heating fingerprint display device of the present invention. As can be seen from the figure, by attaching the perception using the magnet holder 150, fumigation is spread evenly to the perception, thereby increasing the perception efficiency.

According to the present invention, the evidence of the crime can be secured at the sage by appearing and collecting fingerprints at the crime scene with the participation of the witness, and regardless of the type of plant such as a fixed plant or a removable plant Fingerprints can be displayed, for example, small objects such as cards and business cards can be attached to or detached from a magnet mounting hanger on the top of the device to display fingerprints. It is possible to collect good fingerprints by spontaneously drying the fingerprints without changing their position (about 1 hour), and it is easy to carry, and it is easy to carry. It can be displayed and the fumigation status can be easily checked by using LED lights at night. In addition, by using the rechargeable battery as a power source, it can be used semi-permanently, contributing to national budget savings, better display ability than any reagents, no need of fixer, and no perception of handwriting. You can get a breakthrough effect that can be manifested.

Until now, a portable heating fingerprint display device and a fingerprint display method using the device have been described with reference to the accompanying drawings, but this is for illustrative purposes and is not intended to limit the present invention. The scope is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof should be construed as being included in the scope of the present invention. .

1000: device 100: main body
110: knob 120: wiring cover
130: Pistol Ring 140: A-shaped Hanger
150: magnet holder 200: control box
201: operation switch 202: temperature control switch
203: electric heater 1,2 switch 204: LED light lamp switch
205: LED display 206: rechargeable battery
207: power supply unit 208: control unit
209: FET switch 210, 211: heater 1,2
210a, 211a: Temperature sensor 212: LED light lamp
300: handle 400: transparent plate
500: close contact

Claims (12)

As a portable fever fingerprint display device that recognizes the fingerprint of a sensitive plant,
A box-shaped body forming an appearance of the device;
A control box mounted to one side of the main body to control the fingerprint display device;
A handle installed at the center of the upper surface of the main body and used to move the device;
A transparent plate formed on the upper and side surfaces of the main body to immediately check the fumigation fixation state;
An adhesion part surrounding a main body edge which is in contact with the floor; And
A portable exothermic fingerprint display device comprising a plurality of heaters that generate heat to vaporize and fumigation by iodine (Iodine) powder or CA (Cyano Acrylate) solution. The method according to claim 1,
The main body is a portable heating fingerprint display device characterized in that using the waterproofing. The method according to claim 1,
The handle is a portable heating fingerprint display device, characterized in that using light and solid wood. The method according to claim 1,
Portable transparent fingerprint display device characterized in that the transparent plate is composed of polycarbonate. The method according to claim 1,
The close contact portion is a portable heating fingerprint display device characterized in that the use of a good adhesion and cushioning rubber and embedded a strong permanent magnet in the middle of the rubber. The method according to claim 1,
It further comprises an LED lighting lamp for illuminating the lighting in the body when performing the night identification, and includes a wiring cover covering the LED lighting lamp and can be opened and closed slidingly, the wiring cover sliding the wiring cover A portable heating fingerprint display device comprising a knob as a handle. The method according to claim 1,
A-shaped holder and a-shaped holder attached to one side of the permanent magnet implanted in the width direction at the center of the back surface of the main body so that small objects such as paper, thermal paper, business cards, cards, bags and wallets can be displayed. A magnetic holder attached to the other side of the paper holder, the paper holder, a paper holder, a business card, a card, a bag, a small holder such as a purse to fix a small perceptible; And
Portable fever fingerprint display device further comprises a pistol ring for hanging pistols. The method according to claim 1,
The plurality of heaters is a portable heating fingerprint display device characterized in that it comprises a heating protection plate for protecting the heater of the ceramic. The method of claim 6,
The control box,
A rechargeable battery as a power source for the device;
An operation switch for supplying or disconnecting power to the entire apparatus;
A heater switch for supplying or disconnecting power to the plurality of heaters and a temperature sensor attached thereto;
LED lighting lamp switch for supplying power to the LED lighting lamp or cut off;
A temperature control switch controlling a temperature of the heaters;
A 7-segment LED display for displaying the temperature of the heaters sensed by the temperature sensor, the battery level of the rechargeable battery, and the inspection status of the device;
A power supply for supplying power to the device and a plurality of heaters;
A FET switch for supplying pulse width modulation (PWM) power to the plurality of heaters; And
And a controller for controlling the entire device and controlling temperature measurement, temperature setting, and set temperature control of the temperature sensor. The method according to claim 9,
The heater switch includes a toggle switch, the LED lamp lighting switch, the operation switch includes a dip (DIP) switch, the temperature control switch includes a variable volume, and the power supply unit includes a DC-DC converter. And the plurality of heaters include a Peltier element that generates heat using a Peltier effect. A method of presenting a fingerprint according to the apparatus of claim 9,
Placing a sensitizer to be fingerprinted into a body and charging iodine (Iodine) powder or CA (Cyano Acrylate) solution to a plurality of heaters;
Reading temperature sensing values of the heaters from the temperature sensors attached to the heaters by the control unit, measuring the temperature of the heaters, and continuously applying PWM power to the heaters through the FET switch until the preset temperature is reached;
When the preset temperature value is reached, decreasing or increasing the PWM power by the controller to maintain the set temperature constant; And
CA or iodine powder poured into the heaters is vaporized in the body of the device and diffused throughout the inside of the device, the vaporized smoke is stuck to the fingerprint section on the persimmon placed in the body to cause the fingerprint to be exposed. A fingerprint display method characterized by the above-mentioned. The method of claim 11,
Wherein the set temperature value is set to a temperature value at which the iodine powder or CA solution poured to enable fingerprint presentation to the heaters is best evaporated.

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