CN111272760A - Portable miniature document inspection instrument - Google Patents
Portable miniature document inspection instrument Download PDFInfo
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- CN111272760A CN111272760A CN202010229249.5A CN202010229249A CN111272760A CN 111272760 A CN111272760 A CN 111272760A CN 202010229249 A CN202010229249 A CN 202010229249A CN 111272760 A CN111272760 A CN 111272760A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a portable miniature document inspection instrument, which comprises a display screen embedded in the inner wall of a box cover, wherein a large gear disc is arranged on a middle supporting plate in the box body, absorption optical filters with different wave bands are arranged on the large gear disc, one of the absorption optical filters is aligned with a detection window on the middle supporting plate, the large gear disc is in meshed connection with an adjusting mechanism, a camera and a camera bellows shell are fixed at the bottom of a top plate, a light inlet is formed in the bottom surface of the camera bellows shell and is positioned above the detection window, a light outlet is formed in the side surface of the camera bellows shell, a reflector A and a reflector B which are obliquely arranged are fixed in the camera bellows shell, and finally a material imaging light path which is refracted by the horizontal 90 degrees of the reflector A and the camera and is refracted by the vertical; and a plurality of excitation light sources with different wavelengths distributed around the detection window are arranged at the bottom of the middle supporting plate. The structure cultural inspection instrument is not influenced by the size, thickness and thickness of the material to be inspected; it can identify the addition, covering, altering, fading, etc. of characters.
Description
Technical Field
The invention relates to a correction mark inspection device for bills, certificates and documents, in particular to a portable miniature document inspection instrument.
Background
In the departments of public security, justice, inspection, customs, quality inspection and the like, some documents, certificates, statements, invoices and the like are often checked and verified to identify the authenticity of the documents, the certificates, the statements, the invoices and the like. The document inspection is a technical science that the suspicious document evidence is analyzed and identified to determine the relationship between the document and case facts and the relationship between the document and a certain person. When the cultural relic evidence is observed by naked eyes under natural light conditions, the writings of the materials are quite similar, and the colors, the luster, the shade and the like are not obviously different, but different reflection, infrared absorption emission or fluorescence characteristics can exist due to different formulas of the writing dye. The traditional desktop document inspection instrument mainly adopts a mode of combining a multiband light source and a multiband absorption optical filter rotating wheel to obtain a multispectral image of a document material evidence, and adopts image processing to realize the functions of true and false identification of an inspected object and the like.
The evidence judicial appraisal organization of material evidence relates to criminal case, civil case, often will go out to collect evidence and inspect, and the shortcoming that its desk-top literature examination appearance of tradition exists is: the physical examination is huge and cannot be carried; the area and the focal length of the workbench are relatively fixed, so that the workbench is not suitable for large-scale material detection and excessively thick material detection; during inspection operation, the inspection material needs to be continuously moved by hands, so that the spectrum box cannot be completely closed, and the inspection effect is interfered by external stray light.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides a portable miniature text inspection instrument which is small in size, convenient to carry, free from limitation of size and thickness of an inspection material and capable of being inspected without focusing.
In order to achieve the purpose, the technical scheme of the application is as follows: a portable micro-type document examination instrument comprises a box body and a box cover, wherein a display screen is embedded in the inner wall of the box cover, a middle supporting plate is arranged in the box body, a large gear disc is arranged on the middle supporting plate, a plurality of fixing holes are formed in the large gear disc, absorbing optical filters with different wave bands are respectively arranged in each fixing hole, one absorbing optical filter aligns to a detection window on the middle supporting plate, the large gear disc is meshed with an adjusting mechanism on the middle supporting plate and is connected with a top plate in a rotating mode, a camera and a camera case shell are fixed to the bottom of the top plate and are connected with the display screen, a light inlet is formed in the bottom surface of the camera case shell and is located above the detection window, a light outlet is formed in the side surface of the camera case shell and aligns to a camera lens, and a reflector A and a reflector B which are obliquely arranged are fixed in the camera case shell, finally, a material detection imaging light path with a reflector A horizontally refracted at 90 degrees and a reflector B vertically refracted at 90 degrees is formed; and a plurality of excitation light sources with different wavelengths distributed around the detection window are arranged at the bottom of the middle supporting plate.
Further, the excitation light source includes ultraviolet lamp, infrared lamp, blue lamp, short wave ultraviolet lamp, the green lamp of different wavelength and power, and every kind of lamp all is connected with corresponding light source pilot lamp and light source key switch, light source pilot lamp and light source key switch inlay in the box body top.
Furthermore, three absorption filters are fixed on the large gear disc, wherein the three absorption filters are an absorption filter with the wavelength of 430nm, an absorption filter with the wavelength of 650nm and an absorption filter with the wavelength of 700 nm; the large gear plate is arranged on a middle supporting plate through a rotating shaft, a supporting plate for fixing three travel switches is arranged above the middle supporting plate, the supporting plate is fixed on the upper part of the box body, and a light hole corresponding to the detection window is formed in the supporting plate; the three travel switches are arranged in the fixing holes of the supporting plate in a penetrating manner in a close and staggered manner, and three through holes corresponding to the three travel switches are arranged on the large gear disc and are distributed beside the corresponding absorption optical filter; the three travel switches are respectively connected with absorption optical filter indicating lamps, and the absorption optical filter indicating lamps are embedded in the top of the box body.
Furthermore, the reflective mirror A and the reflective mirror B are both front coated films, the reflective mirror B is obliquely arranged above the light inlet, the reflective mirror A is obliquely arranged on one side of the light outlet, the center of the reflective mirror A is aligned with the camera, and the camera adopts a CCD camera with a horizontal structure.
Furthermore, the bottom of the middle supporting plate is connected with a baffle, an excitation light source is arranged in an accommodating cavity a formed by one side of the baffle and the box body, a signal acquisition card is arranged in an accommodating cavity b formed by the other side of the baffle and the box body, and the signal acquisition card is connected with the camera.
Furthermore, the signal acquisition card is provided with a USB port and a data line port.
Furthermore, adjustment mechanism, including pinion dish, connecting axle, regulation post, the connecting axle top links to each other with the regulation post, is equipped with on regulation post upper portion and rotates the groove, and the cylinder of fixing on the roof stretches into and rotates the groove, the connecting axle bottom is passed through the bearing and is connected with the rotation of middle part layer board, is fixed with the pinion dish in the connecting axle lower part, the pinion dish is connected with the meshing of gear wheel dish.
Furthermore, one side of the box cover is connected with one side of the top plate through a rotating shaft.
Further, the box body is communicated with the top plate through a protruding box body.
As a further step, a power switch is embedded at the top of the box body and arranged side by side with the light source key switch, the power switch is connected with a power indicator lamp, and the power indicator lamp is arranged side by side with the light source indicator lamp.
Due to the adoption of the technical scheme, the invention can obtain the following technical effects:
this application changes conventional upright camera into the horizontal formula, designs the periscope formula light path of secondary refraction reversal with vertically light path, very big reduction equipment volume, conveniently carry.
This application still will leak the mode that the optical filter was changed to the hand formula of dialling outward and improve into the embedded conversion carousel of gear, drives the pinion disc and then drives the bull wheel dish through the outside regulation post of manual rotation and rotates, reaches the purpose of chooseing for use suitable absorption light filter.
This application still removes traditional pulling-on piece formula excitation light source, and the light source redesign directly uses specific excitation light source to fix around the detection window, further reduces equipment volume.
The system adopts a completely closed design, and a detection window is reserved, so that the system is not interfered by external light; the structure cultural inspection instrument is not influenced by the size, thickness and thickness of the material to be inspected; it can identify the addition, covering, altering, fading, etc. of characters.
Drawings
FIG. 1 is a schematic view of a part of the structure of a portable document inspection instrument;
FIG. 2 is a schematic diagram of the refraction of the light path of the portable document inspection instrument;
FIG. 3 is a schematic view of a part of the structure of the portable document inspection instrument;
FIG. 4 is a schematic view of a first structure of the portable document inspection instrument;
FIG. 5 is a second schematic view of the portable document inspection instrument;
the sequence numbers in the figures illustrate: the system comprises an R camera, an R reflector A, an R reflector B, an R adjusting column, an R pinion wheel, an R middle supporting plate, an R8430 absorption filter, an R9650 absorption filter, an R10700 absorption filter, an R detection window, an R display screen, an R rotating shaft, an R box body, an R absorption filter indicator, an R light source key switch, an R power switch, an R19365 ultraviolet lamp, an R21455-460 nm blue lamp, an R22520-525 nm green lamp a, an R green lamp, an R short wave ultraviolet lamp, an R-525 nm green lamp B, an R signal acquisition card, an R power socket, an R data line through hole, an R power line through hole, an R top plate, an R camera bellows shell, an R travel switch, an R supporting plate, an R box cover and an R baffle plate.
Detailed Description
The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The embodiment provides a portable miniature document inspection instrument, which is the same as a desk-type document inspection instrument and is suitable for the field of material evidence judicial appraisal of document ranges in criminal cases and civil cases. Inspecting the inspection material file, such as the file made by the method of adding, covering, altering, fading and the like of characters; and (4) inspecting the debt, the contract, the bill and various fluorescent encrypted documents, and inspecting and identifying the ancient calligraphy and painting cultural inspection. The portable document examination instrument comprises a box body and a box cover, wherein a display screen is embedded in the inner wall of the box cover, a middle supporting plate is arranged in the box body, a large gear disc is arranged on the middle supporting plate, a plurality of fixing holes are formed in the large gear disc, absorption optical filters with different wave bands are respectively arranged in each fixing hole, one absorption optical filter is aligned to a detection window on the middle supporting plate, the large gear disc is meshed with an adjusting mechanism on the middle supporting plate, the top of the adjusting mechanism is rotatably connected with a top plate, a camera and a camera box shell are fixed at the bottom of the top plate, the camera is connected with the display screen, a light inlet is formed in the bottom surface of the camera box shell and is positioned above the detection window, a light outlet is formed in the side surface of the camera box shell and is aligned to a camera lens, a reflector A and a reflector B which are obliquely arranged are fixed in the camera box shell, and refraction of the reflector A, the reflector B is perpendicular to a material detection imaging light path with 90-degree reverse refraction; and a plurality of excitation light sources with different wavelengths distributed around the detection window are arranged at the bottom of the middle supporting plate.
The camera adopts a CCD camera with a horizontal structure, is used for realizing the functions of previewing and photographing the detected object, is fixed at the bottom of the top plate through screws, and the direction of the lens is aligned to the center of the reflector A.
The camera bellows shell is fixedly connected with the reflector A and the reflector B through glue, the camera bellows shell is fixedly arranged at the bottom of the top plate through glue, and the reflector A and the reflector B adopt a front film coating technology and have no distortion. The reflector B and the plane of the light inlet are arranged in an acute angle, the reflector A and the plane of the light outlet are arranged in an acute angle, the angle is preferably 30-60 degrees, and after the reflector B is matched with a camera, the object distance can be greatly reduced, and the size of equipment is further greatly reduced.
The wave length fixed with shadowless glue on the big gear plate is: an absorption filter of 430nm, an absorption filter of 650nm and an absorption filter of 700 nm; the large gear disc is fixed on the middle supporting plate through a rotating shaft and can rotate; a supporting plate for fixing three travel switches is arranged above the middle supporting plate, the supporting plate is fixed at the upper part of the box body and is positioned below the camera and the camera bellows shell, and a light hole corresponding to the detection window is formed in the supporting plate; the three travel switches are arranged in the fixing holes of the supporting plate in a penetrating manner in a close and staggered manner, three through holes corresponding to the three travel switches are arranged on the large gear disc, and the three through holes are distributed beside the corresponding absorption optical filter and are not on the same circumference; the three travel switches are respectively connected with absorption optical filter indicating lamps which are embedded in the top of the box body; contacts of the three travel switches are all arranged downwards and are in contact with the upper surface of the large gear plate, and when the contacts of the travel switches are positioned in the corresponding through holes, the absorption filter indicator lamps connected with the travel switches are lightened.
The small gear plate is fixed on the lower portion of the connecting shaft, the top of the connecting shaft is fixedly connected with the adjusting column, and the small gear plate is meshed with the large gear plate through teeth. The connecting shaft is rotatably connected with the middle supporting plate through a bearing, a rotating groove is formed in the upper portion of the adjusting column, and a column body fixed on the top plate extends into the rotating groove, so that the adjusting mechanism can freely rotate; after the adjusting column is rotated, the small gear disc is driven to further drive the large gear disc to rotate, and finally different absorption optical filters can be selected.
The display screen embedded in the inner wall of the box cover can adopt a size of 9 inches, 10 inches and the like, is connected to the camera through a data line, the box cover is connected to the top plate through a rotating shaft, and the display screen can be freely turned over along with the box cover; the display screen can be selected from a Crosseec/Kannuosi model 403, or a vehicle hundred type AC-430ST, and other types can be selected according to actual requirements without limitation.
The light source indicator lamp is 7 in number, and the light source indicator lamp represents different light sources respectively, is equipped with power indicator lamp on one side of the light source indicator lamp, is used for representing the switch of power, the light source indicator lamp sets up side by side with power indicator lamp and all inlays in the box body top.
The total number of the absorption filter indicator lamps is 3, different absorption filters are distinguished and represented, and the absorption filter indicator lamps are all embedded in the top of the box body.
The excitation light source specifically includes:
1. the ultraviolet lamp with the wavelength of 365nm is adhered to the box body through glue, is fixed at 45 degrees with the side wall of the box body, and is connected with the corresponding light source indicator lamp through a lead.
2. The infrared lamp, this light source is through gluing to the box body on, and is 90 degrees fixed with the box body lateral wall, and it is connected with corresponding light source pilot lamp through the wire. The 365nm ultraviolet lamp is positioned above the infrared lamp.
3. The blue light with the wavelength of 455-460 nm is adhered to a fixing plate a by glue, the fixing plate a is adhered to the bottom of the middle supporting plate at 45 degrees by glue, and the fixing plate a is connected with a corresponding light source indicator light by a lead.
4. The green light a with the wavelength of 520nm-525nm is also adhered on the fixed plate a by glue and is connected with the corresponding light source indicator light by a lead.
5. The green light with the wavelength of 530nm is characterized in that a plurality of light sources are arranged side by side and adhered to a fixing plate b through glue, the fixing plate b is adhered to the bottom of the middle supporting plate through the glue at an angle of 45 degrees and is connected with a corresponding light source indicator through a lead.
6. And a plurality of short-wave ultraviolet lamps are arranged side by side and are adhered to the fixing plate b through glue, and the short-wave ultraviolet lamps are connected with corresponding light source indicating lamps through conducting wires.
7. The green light b with the wavelength of 520nm-525nm is adhered on the baffle by glue at 45 degrees and is connected with the corresponding light source indicator light by a lead. The power of the green lamp b is larger than that of the green lamp a.
The signal acquisition card is fixed on the baffle plate through screws, a USB output interface is arranged on the signal acquisition card, the USB output interface is connected with a computer through a data line to finish data acquisition and storage, and a data line through hole is formed in the box body. The signal acquisition card can select the Haitian brand, and can also select other brands according to the requirements.
A power socket is also arranged in the accommodating cavity b, the power socket is fixed on the inner wall of the box body through screws, and a power line through hole is formed in the box body; the power socket supplies power for the display screen, the signal acquisition card, the camera, the excitation light source and the like respectively, and can also supply power by adopting a battery.
When the detection device is used, the box body is placed on a material to be detected, the box body can be moved up and down, left and right to detect through the detection window when the area of the material to be detected is large, a light path enters the reflector b through the detection window and is reflected to the reflector a, then the light path is collected by the camera and transmitted to the signal acquisition card, the signal acquisition card images on the display screen, and the angle of the display screen can be adjusted.
The volume of the existing file inspection instrument is basically 500X 600X 400mm, the weight reaches more than 15KG, and the volume of the file inspection instrument can be reduced to 125X 85X 115mm, and the weight is 0.6 KG. The test and identification are carried out by matching absorption filters with wavelengths of 430mm, 530mm and 700mm with 7 light sources. The detection window is positioned at the top of the accommodating cavity a, so that the detection window is not interfered by external light; and the structure cultural relic inspection instrument is not influenced by the size and thickness of the material to be inspected.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A portable micro-type document examination instrument is characterized by comprising a box body and a box cover, wherein a display screen is embedded in the inner wall of the box cover, a middle supporting plate is arranged in the box body, a large gear disc is arranged on the middle supporting plate, a plurality of fixing holes are formed in the large gear disc, absorbing optical filters with different wave bands are respectively arranged in each fixing hole, one absorbing optical filter is aligned to a detection window on the middle supporting plate, the large gear disc is meshed with an adjusting mechanism on the middle supporting plate, the top of the adjusting mechanism is rotatably connected with a top plate, a camera and a camera box shell are fixed at the bottom of the top plate, the camera is connected with the display screen, a light inlet is formed in the bottom surface of the camera box shell and is positioned above the detection window, a light outlet is formed in the side surface of the camera box shell and is aligned to a camera lens, and a reflector A and a reflector B which are obliquely arranged are fixed in, finally, a material detection imaging light path with a reflector A horizontally refracted at 90 degrees and a reflector B vertically refracted at 90 degrees is formed; and a plurality of excitation light sources with different wavelengths distributed around the detection window are arranged at the bottom of the middle supporting plate.
2. The portable micro-type medical examination instrument according to claim 1, wherein the excitation light source comprises an ultraviolet lamp, an infrared lamp, a blue lamp, a short-wave ultraviolet lamp, and a green lamp with different wavelengths and powers, each lamp is connected with a corresponding light source indicator lamp and a corresponding light source key switch, and the light source indicator lamp and the light source key switch are embedded in the top of the box body.
3. The portable micro-text inspection instrument according to claim 1, wherein three kinds of absorption filters are fixed on the large gear plate, and are respectively an absorption filter with a wavelength of 430nm, an absorption filter with a wavelength of 650nm, and an absorption filter with a wavelength of 700 nm; the large gear plate is arranged on a middle supporting plate through a rotating shaft, a supporting plate for fixing three travel switches is arranged above the middle supporting plate, the supporting plate is fixed on the upper part of the box body, and a light hole corresponding to the detection window is formed in the supporting plate; the three travel switches are arranged in the fixing holes of the supporting plate in a penetrating manner in a close and staggered manner, and three through holes corresponding to the three travel switches are arranged on the large gear disc and are distributed beside the corresponding absorption optical filter; the three travel switches are respectively connected with absorption optical filter indicating lamps which are embedded in the top of the box body.
4. The portable micro-type medical examination instrument according to claim 1, wherein the reflector A and the reflector B are both front coated films, the reflector B is obliquely arranged above the light inlet, the reflector A is obliquely arranged on one side of the light outlet, the center of the reflector A is aligned with the camera, and the camera adopts a CCD camera with a horizontal structure.
5. The portable micro-type medical examination instrument according to claim 1, wherein a baffle is connected to the bottom of the middle supporting plate, an excitation light source is arranged in a containing cavity a formed by one side of the baffle and the box body, a signal acquisition card is arranged in a containing cavity b formed by the other side of the baffle and the box body, and the signal acquisition card is connected with the camera.
6. The portable micro-scale document inspection instrument according to claim 5, wherein the signal acquisition card is provided with a USB output interface, and the USB output interface is connected with a computer through a data line.
7. The portable miniature instrument for cultural and examination according to claim 1, wherein said adjusting mechanism comprises a small gear plate, a connecting shaft, and an adjusting post, wherein the top of said connecting shaft is connected to said adjusting post, a rotating groove is provided on the upper portion of said adjusting post, a cylinder fixed on the top plate extends into said rotating groove, the bottom of said connecting shaft is rotatably connected to the middle supporting plate through a bearing, a small gear plate is fixed on the lower portion of said connecting shaft, and said small gear plate is engaged with said large gear plate.
8. The portable miniature review instrument of claim 1, wherein said lid side is connected to said top plate side by a pivot shaft.
9. The portable micro-scale document inspection instrument according to claim 8, wherein the box body is in communication with the top plate through a convex housing.
10. The portable micro-type medical examination instrument according to claim 1, wherein a power switch is embedded in the top of the box body and is arranged in parallel with the light source key switch, the power switch is connected with a power indicator, and the power indicator is arranged in parallel with the light source indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010229249.5A CN111272760A (en) | 2020-03-27 | 2020-03-27 | Portable miniature document inspection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010229249.5A CN111272760A (en) | 2020-03-27 | 2020-03-27 | Portable miniature document inspection instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111272760A true CN111272760A (en) | 2020-06-12 |
Family
ID=70999601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010229249.5A Pending CN111272760A (en) | 2020-03-27 | 2020-03-27 | Portable miniature document inspection instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111272760A (en) |
-
2020
- 2020-03-27 CN CN202010229249.5A patent/CN111272760A/en active Pending
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