CN2516973Y

CN2516973Y - Material evidence identifier

Info

Publication number: CN2516973Y
Application number: CN 02218594
Authority: CN
Inventors: 郑学哲
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-24
Filing date: 2002-01-24
Publication date: 2002-10-16
Anticipated expiration: 2012-01-24

Abstract

The utility model relates to an instrument for material evidence identification, in particular to a material evidence identification instrument, which can automatically scan and identify the related material evidence. The main technical proposal is that: a host machine is arranged at the lower part of the housing and a keyboard is arranged at the central section of the housing and is connected with the host machine through a signal line; a viewfinder room is arranged at the upper part of the housing and is equipped with a light source, a camera and a spectrum conversion disk; the spectrum conversion disk is connected with the rotating shaft of the motor and a rotary table seat is arranged on the clapboard of the housing outside of the spectrum conversion disk; through holes are distributed evenly along the circumferential direction of the spectrum conversion disk; the shot of the camera is arranged on the rotary table seat and is positioned above the through holes of the spectrum conversion disk. Using the instrument, the true and false of the material evidence can be effectively identified.

Description

The material evidence assessing instrument

Technical field

The utility model belongs to a kind of instrument of differentiating material evidence, refer in particular to a kind of can be to relevant material evidence autoscan, the material evidence assessing instrument of differentiating automatically.

Background technology

In current society, be used for proving that the various certificates of personal identification are more and more, all trades and professions are also relatively paid attention to this class certificate when the recruitment talent.But, how to prove the authenticity of this class certificate, be a problem.

In the prior art, some is exclusively used in the equipment of differentiating this class certificate, and by external import, price comparison is expensive mostly for these equipment, though domestic have some similar equipment, but is not very practical.

Technology contents

The purpose of this utility model is a kind of material evidence assessing instrument of design, so that provide a kind of discriminating instrument easy to use, moderate, rational in infrastructure for the police criminal detection personnel.

Its main technical schemes is to place host computer in the bottom of casing, places keyboard at the middle part of casing, and keyboard utilizes signal wire to be connected with host computer, on the top of casing the chamber of finding a view is set, at indoor have light source, gamma camera and the spectrum changeover panel of finding a view.

The spectrum changeover panel is connected with shaft of motor, rotary disk basement on the upper spacer that is installed on casing is arranged in the outside of spectrum changeover panel, along the circumferential direction uniform through hole on the spectrum changeover panel, the camera lens of gamma camera is installed on the rotary disk basement, and is positioned at the through hole top of spectrum changeover panel.

The oblique fire light source is installed on the indoor median septum of finding a view, below the indoor top cover of finding a view, electric fan is set; On the indoor lower clapboard of finding a view, transmitted light source is installed; Two cover spectrum changeover panels are installed on the upper spacer of chamber of finding a view, every cover spectrum changeover panel is connected with separately shaft of motor respectively, every motor all is installed on separately the rotary disk basement, each rotary disk basement all is installed on the interior upper spacer of casing, and on the rotary disk basement therein according to the camera lens of gamma camera, on the box body wall corresponding to rotating disk through hole position reflection source is being installed above another rotary disk basement.

Both sides at casing are provided with supporting plate respectively; Place scanner and display on supporting plate respectively, scanner utilizes signal wire to be connected with host computer respectively with display; Place printer on the top cover of casing, printer utilizes signal wire to be connected with host computer; The side of placing host computer at lower box is provided with drawer, at the casing middle part panel is set, and the light adjusting potentiometer and the power switch of control light source arranged on panel.

Main circuit board, reflection source rectifier are set on the lower clapboard of casing, binding post and Switching Power Supply, oblique fire light source, transmitted light source, reflection source, Switching Power Supply, reflection source rectifier are connected with main circuit board respectively.

The utility model has the advantages that utilize this special device exactly the correction of checking file cover, add to mend by replacing a damaged part, disappear and forge and various encryption, bill seal, fluorescent inspection, sweat fingerprint and oil stain fingerprint etc., so that the criminal detective in time judges the true and false of the evidence that obtains.Whole device is made up of hardware and software two parts, compares with import equipment, and the function ratio of this device is more complete, and identification result is good, and price comparison is low, thereby has very high practical value.

Description of drawings

Fig. 1 is a structural drawing of the present utility model.

Fig. 2 is the component diagram that is installed on the lower clapboard.

Fig. 3 is the component diagram that is installed on the upper spacer.

Fig. 4 is the component diagram that is installed on below the top cover.

Fig. 5 is the component diagram that is installed on the median septum.

Embodiment

As shown in the figure: host computer 4 is placed in the bottom at casing, keyboard 6 is placed at middle part at casing, keyboard 6 utilizes signal wire to be connected with host computer, on the top of casing the chamber 23 of finding a view is set, the spectrum changeover panel 19 that light source, gamma camera 16 is arranged in the chamber 23 of finding a view and be used to carry out the spectrum conversion.

Spectrum changeover panel 19 is connected with the rotating shaft of motor 15, rotary disk basement 18 on the upper spacer that is installed on casing is arranged in the outside of spectrum changeover panel 19, along the circumferential direction uniform through hole on spectrum changeover panel 19, the camera lens 17 of gamma camera 16 is installed on the rotary disk basement 18, and is positioned at the through hole top of spectrum changeover panel 19.Motor drives spectrum changeover panel rotates, to realize the conversion of spectrum.

The oblique fire light source 22 that material evidence is shone is installed on the median septum in the chamber 23 of finding a view, so that the impression of check material evidence, the electric fan 21 that is provided for dispelling the heat below the top cover 1 the chamber 23 of finding a view in, this fan is mainly used in the lamp box that cools off main light source.For not influencing the preheating of main light source, be provided with independently switch, when the main light source preheating finishes, behind the brightness stability, can open fan and cool off.The transmitted light source 12 that material evidence is carried out infrared transmission is installed on the lower clapboard in the chamber 23 of finding a view, two cover spectrum changeover panels 19 are installed on the upper spacer of chamber 23 of finding a view, every cover spectrum changeover panel 19 is connected with the rotating shaft of separately motor 15 respectively, every motor 15 all is installed on separately the rotary disk basement 18, each rotary disk basement 18 all is installed on the interior upper spacer of casing, and on the rotary disk basement 18 therein according to the camera lens 17 of gamma camera 16, the reflection source 20 that material evidence is shone is being installed on corresponding to the box body wall at rotating disk through hole position above another rotary disk basement 18.Utilize these light sources that are positioned at different angles that material evidence is shone, so that obtain comparatively desirable shooting effect.

Supporting plate 3 and supporting plate 2 are set respectively in the both sides of casing, place scanner and display respectively on supporting plate 3 and 2, scanner utilizes signal wire to be connected with host computer respectively with display.Scanner wherein is used to scan relevant documented evidence, so that related data is imported host computer, display is used for showing host computer for information about.

Place printer on the top cover 1 of casing, printer utilizes signal wire to be connected with host computer, so that will print for information about.

The side of placing host computer 4 at lower box is provided with drawer 5, at the casing middle part panel is set, and the light adjusting potentiometer 8 and the power switch 7 of the various light sources of control arranged on panel.

On the lower clapboard of casing, be provided for controlling main circuit board 11, the reflection source rectifier 13 of the course of action of a parts, binding post 14 and Switching Power Supply 10, oblique fire light source 22, transmitted light source 12, reflection source 20, Switching Power Supply 10, reflection source rectifier 13 are connected with main circuit board 11 respectively.

The collection and utilization gamma camera of image and the video card in the host computer are imported image in the computer, and can freely select lighting system to material evidence being shot as required.

Utilize the software of establishment, can realize automatic control, the menu function to software is introduced below:

1, file

Save as: the image of current demonstration is saved as the file of 24 true color BMP forms, for further handling and printing.When selecting this function, can eject a dialog box of preserving file, method of operating is the same with other kinds software, only needs select File catalogue and designated file name to get final product, and file extension BMP can add automatically.Have only when gamma camera is opened, this function just can be used.

Withdraw from: finish the operation of image acquisition program.When the image acquisition program withdraws from, equipment such as its automatic closeall light source of meeting and gamma camera, fan.

2, cumulative mean

When File menu is selected " saving as ", computing machine can intercept the multiframe image continuously, and they are superimposed as a figure, thereby eliminates interference such as picture pit that common TV pickup head produces, shake.Utilizing the material evidence graphic materials all is static picture, and this image acquistion system uses these characteristics of dynamic gamma camera.The cumulative mean function can be improved the quality of tableaux usually effectively.But be noted that under some extreme case when bluring as the image brightness deficiency, the effect of cumulative mean can be run counter to desire on the contrary, even can not get image at all.

Three kinds of selections are arranged: " forbidding this function ", " continuous 8 frames " and " continuous 16 frames " under this menu.If select " forbidding this function ", then do not use the cumulative mean method to handle image.Many factors such as the degree that picture disturbs and illumination are relevant, and the user can freely select how to use this function according to the picture situation.If select to use this function, continuous capturing multiframe image has the regular hour delay, and image has flicker simultaneously, and this is a normal phenomenon.

Claims

1, material evidence assessing instrument, it is characterized in that placing host computer (4) in the bottom of casing, keyboard (6) is placed at middle part at casing, keyboard (6) utilizes signal wire to be connected with host computer, top at casing is provided with the chamber (23) of finding a view, and light source, gamma camera (16) and spectrum changeover panel (19) are arranged in the chamber of finding a view (23).

2, assessing instrument according to claim 1, it is characterized in that spectrum changeover panel (19) is connected with the rotating shaft of motor (15), rotary disk basement (18) on the upper spacer that is installed on casing is arranged in the outside of spectrum changeover panel (19), along the circumferential direction uniform through hole on spectrum changeover panel (19), the camera lens (17) of gamma camera (16) is installed on the rotary disk basement (18), and is positioned at the through hole top of spectrum changeover panel (19).

3, assessing instrument according to claim 1 is characterized in that installing on the median septum in the chamber of finding a view (23) oblique fire light source (22).

4, assessing instrument according to claim 1 is characterized in that installing on the lower clapboard in the chamber of finding a view (23) transmitted light source (12), electric fan (21) is set below the top cover (1) in the chamber of finding a view (23).

5, assessing instrument according to claim 1, it is characterized in that on the upper spacer of the chamber of finding a view (23), installing two cover spectrum changeover panels (19), every cover spectrum changeover panel (19) is connected with the rotating shaft of separately motor (15) respectively, every motor (15) all is installed on separately the rotary disk basement (18), each rotary disk basement (18) all is installed on the interior upper spacer of casing, and a rotary disk basement (18) is therein installed reflection source (20) upward according to the camera lens (17) of gamma camera (16) on the box body wall of the top of another rotary disk basement (18) corresponding to rotating disk through hole position.

6, assessing instrument according to claim 1 is characterized in that being provided with respectively in the both sides of casing supporting plate (3) and supporting plate (2).

7, assessing instrument according to claim 6 is characterized in that placing scanner and display respectively on supporting plate (3) and (2), and scanner utilizes signal wire to be connected with host computer respectively with display.

8, assessing instrument according to claim 1 is characterized in that the top cover (1) at casing is gone up the placement printer, and printer utilizes signal wire to be connected with host computer.

9, assessing instrument according to claim 1 is characterized in that the side of placing host computer (4) at lower box is provided with drawer (5), at the casing middle part panel is set, and the light adjusting potentiometer (8) and the power switch (7) of control light source arranged on panel.

10, according to claim 1 or 3 or 4 or 5 described assessing instruments, it is characterized in that on the lower clapboard of casing, being provided with main circuit board (11), reflection source rectifier (13), binding post (14) and Switching Power Supply (10), oblique fire light source (22), transmitted light source (12), reflection source (20), Switching Power Supply (10), reflection source rectifier (13) are connected with main circuit board (11) respectively.