CN109419513A - The automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint for scene of a crime powder method - Google Patents
The automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint for scene of a crime powder method Download PDFInfo
- Publication number
- CN109419513A CN109419513A CN201710748641.9A CN201710748641A CN109419513A CN 109419513 A CN109419513 A CN 109419513A CN 201710748641 A CN201710748641 A CN 201710748641A CN 109419513 A CN109419513 A CN 109419513A
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- Prior art keywords
- powder
- trace
- trace inspection
- fingerprint
- bottle
- Prior art date
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/02—Apparatus specially adapted for applying particulate materials to surfaces using fluidised-bed techniques
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/06—Storage, supply or control of the application of particulate material; Recovery of excess particulate material
Abstract
The present invention relates to a kind of automatic powder supply trace inspection equipment to take the fingerprint for scene of a crime powder method and its powder supply method, air pump to be electrically connected with battery, and the outlet side of air pump is connected with powder bottle；Ultramicropore fluidized bed is installed in powder bottle, the top of ultramicropore fluidized bed is the trace inspection powder being placed in powder bottle, by air pump output have pressure air by ultramicropore fluidized bed lower section pass through ultramicropore fluidized bed, is formed multiple independent air-flows, act on trace inspection powder bottom, trace inspection powder surface generation mixed gas；One end of shell is equipped with the spray head with spout, brush head is equipped with around spout, the mixture pipe being tightly connected with spout is equipped in powder bottle, the mixed gas generated in powder bottle is sent by mixture pipe to spout brush head, and the trace in mixed gas examines powder contact to fingerprint trace and is adsorbed in fingerprint trace surface formation sharp image.Present invention improves the working environment of policeman, simultaneously reduces the usage amount of powder, improves sampling operation efficiency.
Description
Technical field
The invention belongs to trace detection tools in police criminal detection field, specifically a kind of to be used for scene of a crime powder method
The automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint.
Background technique
Currently, the most popular method for scene of a crime fingerprint imaging and analysis is called powder visualization (-isa-), this in film or
Can often it see in TV.Investigator paints fine powder on fingerprint, then sticks shape and trace that adhesive tape obtains powder
Mark (the actually namely trace of fingerprint)；In this way, investigator can save finger print information to adhesive tape, to conveniently take back
It is analysed in depth in laboratory.If fingerprint stays in the surface of the unwetted property article such as metal, plastic cement, glass, ceramic tile, powder can be used
Last method, which takes the fingerprint, dips in a little powder with banister brush, gently plays brush handle, is scattered in powder equably on fingerprint, then shake off or
Excessive powder is flicked with brush point, colourless fingerprint can become coloured.Common powder has aluminium powder, iron powder, copper powder, graphite powder
Deng.It is a kind of easy, effective method that powder method, which takes the fingerprint,.But since used powder is mostly superfines, warp
After crossing a large amount of brush, powder largely suspends in air, very big to the physical impairment of professional technician；Moreover, using brush
Fingerprint surface is directly brushed, is easy fingerprint damage.
Summary of the invention
It is of the invention in order to solve because of the above problem caused by powder suspension air existing for existing powder visualization (-isa-)
It is designed to provide a kind of automatic powder supply trace inspection equipment and its powder supply method to take the fingerprint for scene of a crime powder method.
The purpose of the present invention is achieved through the following technical solutions:
Automatic powder supply trace inspection equipment of the invention includes shell and the battery being separately mounted in the shell, air pump and powder
Bottle, air pump are electrically connected with battery, and the outlet side of the air pump is connected with the powder bottle；It is equipped in the powder bottle super
Micropore fluidized bed, the top of the ultramicropore fluidized bed are the trace inspection powder being placed in powder bottle, are had by what the air pump exported
Pressure air by ultramicropore fluidized bed lower section pass through ultramicropore fluidized bed, is formed multiple independent air-flows, act on trace examine powder
Bottom generates mixed gas above trace inspection powder；One end of the shell is equipped with the spray head with spout, around the spout
Equipped with brush head, the inner space that brush head surrounds is the hairbrush spray canister being connected with spout；It is equipped in the powder bottle close with the spout
The mixture pipe of connection is sealed, the mixed gas generated in powder bottle is sent to nozzle by the mixture pipe, again through the hairbrush
Spray canister sprays, and the trace in mixed gas examines powder contact to fingerprint trace and is adsorbed in fingerprint trace surface formation sharp image；
Wherein: tracheae is equipped in the powder bottle, the upper end of the tracheae is connected with the outlet side of the air pump, and lower end is inserted
Be located on the ultramicropore fluidized bed and be connected below the ultramicropore fluidized bed, air pump output has pressure empty
Gas is sent by the tracheae to the lower section of ultramicropore fluidized bed；
The upper end of the mixture pipe is located in powder bottle and is equipped with disperser, and the lower end of the mixture pipe is by the powder bottle
It is pierced by, is tightly connected with the spout；Spout junction on the mixture pipe lower end and spray head is equipped with sealing ring；
Multiple return air holes are circumferentially about evenly equipped in spout on the spray head, each return air hole is located at the brush head
The periphery of installation site on spray head；Strainer is equipped between the spray head and powder bottle, which is located at the upper of each return air hole
Side；One end of the shell be equipped with powder bottle cap, the other end be equipped with battery cover, the powder bottle cap in a ring, the axial direction of lower openings
Section is in "eight" shape, and the edge on the "eight" shape top is located at the periphery of each return air hole；
It is equipped with switchboard and electric-controlled plate in the shell, is separately installed with speed regulation, power switch and work on the switchboard
Switch, the electric-controlled plate are electrically connected and on the route of connection equipped with the operating switch with battery, the air pump with it is automatically controlled
Plate electrical connection is simultaneously equipped with the speed regulation, power switch in connection line；
The powder supply method for the automatic powder supply trace inspection equipment that the present invention takes the fingerprint for scene of a crime powder method are as follows:
The battery is air pump power supply, starting air pump, and body of calming the anger forms independent after the ultramicropore fluidized bed
Air-flow makes the trace in the powder bottle examine powder and mixes with air, forms mixed gas, which send through the mixture pipe
To nozzle, again through the hairbrush spray canister spray to trace inspection working face, ejection trace inspection powder directly hits trace examine working face, one
Divide trace inspection powder adsorption in the fingerprint trace surface on trace inspection working face, formation sharp image, another part trace is examined powder and mixed
Convolution is in hairbrush spray canister under the action of closing gas, and the mixed gas sprayed with the spout is converged and hits trace inspection work again
Face；
Wherein: the mixed gas of ejection, a portion powder rest on trace inspection surface, and another part powder is being worn
It is adsorbed when crossing hairbrush spray canister by the bristle of the brush head around hairbrush spray canister, body of calming the anger is discharged after brush head filters；It is attached to
Trace inspection powder on the brush head carries out the part that do not develop during spraying during gently sweeping trace inspection working face
Supplement carries out redevelopment；
There is the trace contained in body of calming the anger to examine powder through the brush head is filtered, passes through the return air opened up on the spray head
Hole recycling, and the strainer filtering by being mounted between spray head and powder bottle.
Advantages of the present invention and good effect are as follows:
1. trace inspection powder is uniformly mixed with air automatically and sent to trace inspection working face by the present invention carries out trace inspection sampling, brush head
In addition to playing the role of development and fixing, the hairbrush spray canister surrounded by brush head also and meanwhile play protection trace inspection powder be lost work
With preventing harmful powder to scatter and disappear under the protection of the hairbrush spray canister surrounded by brush head and diffuse and solve original hair in air
Brush viscous powder then work in powder scatter and disappear the mode of operation of more pollution surrounding air.
2. powder bottle of the invention is built in shell, main machine structure is simplified, is facilitated and is changed a bottle program, solves replacement powder
Bottle misoperation easily causes the phenomenon that trace inspection powder is lost in work.
3. the present invention, which was adsorbed on the powder on brush head, to be sprayed mixed gas again using redevelopment is carried out
There is no the part of development to be supplemented in journey, so that trace inspection achievement is more perfect.
It is set 4. what the present invention provided with trace inspection powder recovering device, was discharged after brush head filters has pressure air to again pass by
Return air hole on brush head periphery recycles filtering, cleans air more.
5. the present invention fundamentally solves powder pollution, improves the working environment of policeman while reducing powder
Usage amount improves sampling operation efficiency.
Detailed description of the invention
Fig. 1 is internal structure cross-sectional view of the invention；
Fig. 2 is the right side view of Fig. 1；
Fig. 3 is surface structure schematic diagram of the invention
Fig. 4 is the right view of Fig. 3；
Fig. 5 is that the present invention takes away the explosive view after shell；
Fig. 6 is the structural schematic diagram at operation of the present invention position；
Fig. 7 is working state figure of the invention；
Wherein: 1 is battery, and 2 be electric-controlled plate, and 3 be air pump, and 4 be speed regulation, power switch, and 401 close gear to switch, 402
For weak shelves gear, 403 be prime time gear, and 5 be switchboard, and 6 be operating switch, and 7 be powder bottle, and 8 be mixture pipe, and 9 be tracheae, 10
It is sealing ring for ultramicropore fluidized bed, 11,12 be strainer, and 13 be brush head, and 14 be return air hole, and 15 be disperser, and 16 be battery cover,
17 be powder bottle cap, and 18 examine working face for trace, and 19 be hairbrush shell, and 20 be spray head, and 21 be mounting plate, and 22 be shell.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
As shown in figs. 1 to 6, the automatic powder supply trace inspection equipment that the present invention takes the fingerprint for scene of a crime powder method includes outer
Shell 22 and the battery 1 being separately mounted in the shell 22, electric-controlled plate 2, air pump 3, operating switch 6, switchboard 5, powder bottle 7 and tune
Speed, power switch 4, wherein shell 22 is hollow structure, and one end is equipped with spray head 20 and is connected with powder bottle cap 17, shell at the end
22 other end is equipped with battery cover 16.
Battery 1 is placed in the top in shell 22, and air pump 3 is located at the lower section of battery 1, and is electrically connected with battery 1.Switch
Speed regulation, power switch 4 and operating switch 6 are separately installed on plate 5, electric-controlled plate 2 is electrically connected with battery 1 and in the route of connection
It is equipped with operating switch 6, air pump 3 is electrically connected with electric-controlled plate 2 and is equipped with speed regulation, power switch 4 in connection line.Air
Pump 3 is provided with pressure air, and body of calming the anger is provided with after air is compressed and is used for powder bottle 7.3 no load discharge of air pump of the invention is
15cm3/ s, gas outlet maximum working pressure (MWP) are 0.03mpa.When work, unloaded current rate is divided into two grades；That is, on switchboard 5
It is divided into three gears, one is that switch closes gear 401, second and third is exactly two of 3 varying strength air-flow of air pump
Gear, respectively weak shelves gear 402 and prime time gear 403；The air flow rate of weak shelves gear 402 is 8cm3/ s, prime time gear 403
Air flow rate be 12cm3/s.Working strength pushes speed regulation, power supply when can examine powder loose density and work according to different traces
Switch 4 arrives different stalls, to adjust the air-flow size of mixed gas.
Powder bottle 7 is located at the lower section of air pump 3, be respectively equipped with inside the powder bottle 7 tracheae 9, mixture pipe 8, disperser 15 and
Ultramicropore fluidized bed 10, ultramicropore fluidized bed 10 are set to the lower part in powder bottle 7, and the upper end of tracheae 9 is fixed by mounting plate 21
In powder bottle 7, lower end is plugged on ultramicropore fluidized bed 10 and is connected with the lower section of the ultramicropore fluidized bed 10；Ultramicropore
The top of fluidized bed 10 is the trace inspection powder being placed in powder bottle 7.Powder bottle 7 is connected with the outlet side of air pump 3, the portion of connection
Quartile is in the top of mounting plate 21, and the upper end of tracheae 9 is connected with the connected component, and the body of calming the anger that air pump 3 exports can
To send by tracheae 9 to the lower section of ultramicropore fluidized bed 10.Mixture pipe 8 is located at the middle part in powder bottle 7, longitudinal center line and gas
The longitudinal center line of pipe 9 is parallel.The upper end of mixture pipe 8 is located in powder bottle 7 and is equipped with disperser 15, the mixture pipe 8
Lower end is pierced by by powder bottle 7, is tightly connected with the spout opened up on spray head 20.Spout on 8 lower end of mixture pipe and spray head 20 connects
It meets place and is equipped with sealing ring 11, for realizing sealing.The periphery of sealing ring 11 be equipped with strainer 12, the strainer 12 be located at spray head 20 and
Between the bottom of powder bottle 7.
The space of the top of mounting plate 21 for thering is pressure air to proceed in powder bottle 7 of air pump 3, then by tracheae 9 send to
The lower section of ultramicropore fluidized bed 10, and ultramicropore fluidized bed 10 is passed through by the lower section of ultramicropore fluidized bed 10, it is formed numerous only
Tiny air-flow is found, trace inspection powder bottom is acted on, floats trace inspection powder in " boiling " state, is generated on trace inspection powder surface
It suspends and diffuses the mixed gas of type, mixed gas enters in mixture pipe 8 by disperser 15, is sent to spout.The present invention
Trace inspection powder loose density be 0.5~1.0g/cm3, fineness is between 500~800 mesh；The ultramicropore of ultramicropore fluidized bed is close
Degree is≤1000 mesh, diameter 15mm, with a thickness of 2mm.
Spout on spray head 20 is located at intermediate position, is equipped with brush head 13, the inner space that brush head 13 surrounds around spout
For the hairbrush spray canister 19 being connected with spout.Multiple return air holes 14 are circumferentially about evenly equipped in spout on spray head 20, each time
Air holes 14 is located at the periphery of the installation site on spray head 20 of brush head 13.Strainer 12 is located at the top of each return air hole 14.Powder bottle cap 17
In a ring, the axial cross section of lower openings is in "eight" shape, and the edge on the "eight" shape top is located at the periphery of each return air hole 14.
Disperser 15 of the invention is the prior art, is made of the white steel mesh of metal, is in cylinder column.According to powder in production
The difference of last type and manufacturer's product may be selected to make using the white steel mesh of metal of different sealing.
The powder supply method for the automatic powder supply trace inspection equipment that the present invention takes the fingerprint for scene of a crime powder method are as follows:
As shown in fig. 7, the brush head 13 of automatic powder supply trace inspection equipment is erect downward when work, public security cadres and police's tradition is maintained
Trace examine gimmick；Included angle A between automatic powder supply trace inspection equipment and trace inspection working face 18 is greater than 45 °, it is ensured that best work
State.
Working face 18 is examined using glass as trace, after pressing fingerprint on glass, the silver powder used using criminal investigation is as trace
Powder is examined, is fitted into powder bottle 7.When work, brush head 13 is directed at the trace acquisition face on trace inspection working face 18, presses operating switch 6,
Start air pump 3, speed regulation, power switch 4 are closed into shelves by switch and are adjusted to weak 402 (8cm of shelves gear3/ s), there is pressure air by sky
The outlet side of air pump 3 exports to the space of 21 top of mounting plate in powder bottle 7, then is sent by tracheae 9 to ultramicropore fluidized bed 10
Lower section, and by the lower section of ultramicropore fluidized bed 10 pass through ultramicropore fluidized bed 10, form the tiny air-flow of numerous independence, make
Powder bottom is examined used in trace, floats trace inspection powder in " boiling " state, suspends in trace inspection powder surface generation and diffuse the mixed of type
Gas is closed, mixed gas enters in mixture pipe 8 by disperser 15, is sent to spout ejection.The trace inspection powder of ejection is straight
It connects and strikes on trace inspection working face 18, a part of trace inspection powder adsorption examines working face 18 in trace, shows that the trace left clearly
Reveal and, another part trace inspection powder is circled round under the action of air-flow in the mixing in hairbrush spray canister 19, and with nozzle ejection
Gas converges, shock trace inspection working face 18 can see the clear fingerprint of previous press on glass surface repeatedly again.
At the same time, when some mixed gas passes through brush head 13, trace is examined powder and is adsorbed by the bristle of brush head 13, calms the anger body then
It is expelled in surrounding air after bristle filters.In use, speed regulation, power switch can be adjusted to prime time shelves according to working strength
Powder supply amount is improved in position 403.
It strikes on trace inspection working face 18 and is attached to the trace inspection powder on trace inspection working face 18, since powder is micro thin
Piece flocculent substance is in irregular status, and the reflection to light is in scattering state, and observation is unobvious, utilizes the light sweeping of brush head 13
Work can make trace inspection powder regularly be attached to trace inspection working face 18, improve light reflection efficiency, reduce scattering light, make to acquire
Trace be more clear.The trace inspection powder being attached on brush head 13 can play the role of redevelopment during gently sweeping, right
The part that do not develop during mixed gas sprays is supplemented, so that trace inspection achievement is more perfect.Brush head 13 is same
When also act as block filtering trace inspection powder effect, by part trace inspection powder control inside hairbrush spray canister 19, avoid excessive dirt
Environment is contaminated, policeman's body is damaged.
After mixed gas is filtered by brush head 13, there are trace inspection powder also seldom in pressure air, automatic confession of the invention
Powder trace inspection equipment has opened up multiple return air holes 14 on the spray head 20 on 13 periphery of brush head, utilizes the air inlet at work of air pump 3
The negative pressure of generation sucks the air around brush head 13, filters through filter screen 12, filters off remaining trace inspection powder, makes air more
Add cleaning.
Claims (10)
1. a kind of automatic powder supply trace inspection equipment to take the fingerprint for scene of a crime powder method, it is characterised in that: including shell
(22) and the battery (1), air pump (3) and the powder bottle (7) that are separately mounted in the shell (22), air pump (3) and battery
(1) it is electrically connected, the outlet side of the air pump (3) is connected with the powder bottle (7)；Ultramicropore stream is installed in the powder bottle (7)
Change bed (10), the top of the ultramicropore fluidized bed (10) is the trace inspection powder being placed in powder bottle (7), by the air pump (3)
Output has pressure air to pass through ultramicropore fluidized bed (10) by the lower section of ultramicropore fluidized bed (10), form multiple independent gas
It flows, act on trace inspection powder bottom, generate mixed gas above trace inspection powder；One end of the shell (22) is equipped with band spout
Spray head (20), be equipped with brush head (13) around the spout, the inner space that brush head (13) surrounds is connected with spout
Hairbrush spray canister (19)；The mixture pipe (8) being tightly connected with the spout is equipped in the powder bottle (7), what is generated in powder bottle (7) is mixed
It closes gas to send by the mixture pipe (8) to nozzle, spray through the hairbrush spray canister (19) again, the trace in mixed gas is examined
Powder contact is to fingerprint trace and is adsorbed in fingerprint trace surface formation sharp image.
2. the automatic powder supply trace inspection equipment to take the fingerprint according to claim 1 for scene of a crime powder method, feature exist
In: tracheae (9) are equipped in the powder bottle (7), the upper end of the tracheae (9) is connected with the outlet side of the air pump (3), lower end
Be plugged on the ultramicropore fluidized bed (10) and be connected below the ultramicropore fluidized bed (10), the air pump (3)
Output has pressure air to send by the tracheae (9) to the lower section of ultramicropore fluidized bed (10).
3. the automatic powder supply trace inspection equipment to take the fingerprint according to claim 1 for scene of a crime powder method, feature exist
Be located in powder bottle (7) in: the upper end of the mixture pipe (8) and be equipped with disperser (15), the lower end of the mixture pipe (8) by
The powder bottle (7) is pierced by, is tightly connected with the spout.
4. the automatic powder supply trace inspection equipment to take the fingerprint according to claim 3 for scene of a crime powder method, feature exist
In: the spout junction on mixture pipe (8) lower end and spray head (20) is equipped with sealing ring (11).
5. the automatic powder supply trace inspection equipment to take the fingerprint according to claim 1 for scene of a crime powder method, feature exist
In: being circumferentially about evenly equipped with multiple return air holes (14) in spout on the spray head (20), each return air hole (14) are located at
The periphery of brush head (13) installation site on spray head (20)；Strainer (12) are equipped between the spray head (20) and powder bottle (7),
The strainer (12) is located at the top of each return air hole (14).
6. the automatic powder supply trace inspection equipment to take the fingerprint according to claim 5 for scene of a crime powder method, feature exist
In: one end of the shell (22) is equipped with powder bottle cap (17), and the other end is equipped with battery cover (16), and the powder bottle cap (17) is in ring
Shape, the axial cross section of lower openings are in "eight" shape, and the edge on the "eight" shape top is located at the outer of each return air hole (14)
It encloses.
7. the automatic powder supply trace inspection equipment to take the fingerprint according to claim 1 for scene of a crime powder method, feature exist
In: it is equipped with switchboard (5) and electric-controlled plate (2) in the shell (22), is separately installed with speed regulation on the switchboard (5), power supply is opened
(4) and operating switch (6) are closed, the electric-controlled plate (2) is electrically connected with battery (1) and is equipped with the work on the route of connection
It switchs (6), the air pump (3) is electrically connected with electric-controlled plate (2) and is equipped with the speed regulation, power switch in connection line
(4)。
8. the automatic powder supply trace to take the fingerprint described in a kind of claim 1 to 7 any claim for scene of a crime powder method
Examine the powder supply method of equipment, it is characterised in that: the battery (1) is air pump (3) power supply, starting air pump (3), body of calming the anger
Individual air stream is formed after the ultramicropore fluidized bed (10), so that the trace in the powder bottle (7) is examined powder and mixes with air, formed
Mixed gas, which send through the mixture pipe (8) to nozzle, through the hairbrush spray canister (19) sprays to trace inspection work again
Make face (18), the trace inspection powder of ejection directly hits trace inspection working face (18), and a part of trace inspection powder adsorption examines working face in trace
(18) fingerprint trace surface, formation sharp image on, another part trace inspection powder circle round under the action of mixed gas in hair
In brush spray canister (19), and the mixed gas sprayed with the spout converges shock trace inspection working face (18) again.
9. powder supply method according to claim 9, it is characterised in that: the mixed gas of ejection, a portion powder
End rests on trace inspection surface, and another part powder is when passing through hairbrush spray canister (19) by the brush head (13) around hairbrush spray canister (19)
Bristle absorption, calm the anger body by brush head (13) filter after be discharged；The trace inspection powder on the brush head (13) is attached to light
The part that do not develop during spraying is supplemented during sweeping trace inspection working face (18), carries out redevelopment.
10. powder supply method according to claim 9, it is characterised in that: through the filtered body of calming the anger of the brush head (13)
In the trace inspection powder that contains, recycled by the return air hole (14) that is opened up on the spray head (20), and by being mounted on spray head
(20) strainer (12) filtering between powder bottle (7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710748641.9A CN109419513B (en) | 2017-08-28 | 2017-08-28 | Automatic powder supply trace detection equipment for extracting fingerprints by powder method on crime scene and powder supply method thereof |
| PCT/CN2018/079411 WO2019041784A1 (en) | 2017-08-28 | 2018-03-19 | Automatic powder supply and trace detection device for extracting fingerprints by means of crime scene powder method and powder supply method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710748641.9A CN109419513B (en) | 2017-08-28 | 2017-08-28 | Automatic powder supply trace detection equipment for extracting fingerprints by powder method on crime scene and powder supply method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109419513A true CN109419513A (en) | 2019-03-05 |
| CN109419513B CN109419513B (en) | 2020-12-08 |
Family
ID=65502422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710748641.9A Active CN109419513B (en) | 2017-08-28 | 2017-08-28 | Automatic powder supply trace detection equipment for extracting fingerprints by powder method on crime scene and powder supply method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109419513B (en) |
| WO (1) | WO2019041784A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831552A (en) * | 1972-02-07 | 1974-08-27 | Identicator Corp | Fingerprinting apparatus |
| CN200941894Y (en) * | 2006-08-22 | 2007-09-05 | 李保供 | Electric fingerprint brush |
| CN202277947U (en) * | 2011-10-12 | 2012-06-20 | 扬州润光照明电器有限公司 | Pressure type powder injection device |
| CN104107050A (en) * | 2014-07-31 | 2014-10-22 | 张琦 | Fingerprint powder automatic rotating brush displaying device |
| CN204743048U (en) * | 2015-06-29 | 2015-11-11 | 郑全金 | Integrated form fingerprint brush device |
| CN105832344A (en) * | 2015-01-15 | 2016-08-10 | 大连圣迈新材料有限公司 | Automatic powder supply mark inspection device used for extracting fingerprint in crime scene by powder method, and powder supply method thereof |
| CN106573216A (en) * | 2014-08-28 | 2017-04-19 | 埃克森美孚研究工程公司 | Fluid injection nozzle for fluid bed reactors |
| CN208808485U (en) * | 2017-08-28 | 2019-05-03 | 大连圣迈新材料有限公司 | The automatic powder supply trace to take the fingerprint for scene of a crime powder method examines equipment |
-
2017
- 2017-08-28 CN CN201710748641.9A patent/CN109419513B/en active Active
-
2018
- 2018-03-19 WO PCT/CN2018/079411 patent/WO2019041784A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831552A (en) * | 1972-02-07 | 1974-08-27 | Identicator Corp | Fingerprinting apparatus |
| CN200941894Y (en) * | 2006-08-22 | 2007-09-05 | 李保供 | Electric fingerprint brush |
| CN202277947U (en) * | 2011-10-12 | 2012-06-20 | 扬州润光照明电器有限公司 | Pressure type powder injection device |
| CN104107050A (en) * | 2014-07-31 | 2014-10-22 | 张琦 | Fingerprint powder automatic rotating brush displaying device |
| CN106573216A (en) * | 2014-08-28 | 2017-04-19 | 埃克森美孚研究工程公司 | Fluid injection nozzle for fluid bed reactors |
| CN105832344A (en) * | 2015-01-15 | 2016-08-10 | 大连圣迈新材料有限公司 | Automatic powder supply mark inspection device used for extracting fingerprint in crime scene by powder method, and powder supply method thereof |
| CN204743048U (en) * | 2015-06-29 | 2015-11-11 | 郑全金 | Integrated form fingerprint brush device |
| CN208808485U (en) * | 2017-08-28 | 2019-05-03 | 大连圣迈新材料有限公司 | The automatic powder supply trace to take the fingerprint for scene of a crime powder method examines equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019041784A1 (en) | 2019-03-07 |
| CN109419513B (en) | 2020-12-08 |
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