CN215914709U

CN215914709U - Integrated cadaver cornea imaging and death time analysis device

Info

Publication number: CN215914709U
Application number: CN202120286625.4U
Authority: CN
Inventors: 霍德民; 郑吉龙; 温洪洋; 周子皓
Original assignee: Jiading Branch Of Shanghai Public Security Bureau
Current assignee: Jiading Branch Of Shanghai Public Security Bureau
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2022-03-01
Anticipated expiration: 2031-02-01

Abstract

The utility model provides an integrated cadaver cornea imaging and death time analysis device, which belongs to the technical field of criminals and comprises a barrel, illuminating lamps, fixing columns, a barrel cover, a mobile phone fixing support and a mobile phone, wherein the barrel is a white plastic cylinder, the bottom end of the barrel is provided with annular soft rubber, the inner wall of the barrel is provided with four illuminating lamps, the outer side wall of the barrel is provided with a data line interface, one side of the barrel is fixedly connected with the fixing columns, the barrel cover is fixed right above the barrel, the central position of the barrel cover is provided with a shooting window, the top of each fixing column is fixed with the mobile phone fixing support, the mobile phone fixing support is spirally fixed with a knob, and the mobile phone is fixed above the barrel cover. The integrated corpse eye cornea imaging and death time analysis device can be used for basic criminal technicians to collect and analyze the corpse eye cornea images in real time at a crime scene, acquire the death time deduction result and play a good role in rapidly and efficiently detecting and destroying a case.

Description

Integrated cadaver cornea imaging and death time analysis device

Technical Field

The utility model relates to the technical field of criminal science, in particular to an integrated corpse eye cornea imaging and death time analysis device.

Background

The change of the corneal opacity of the cadaver is one of the contents which must be checked in the routine cadaver examination procedure, and the estimation of the death time according to the corneal opacity degree of the cadaver has important significance for the investigation of criminal suspects, the division of the investigation range, the reduction of the case investigation cost and the like.

The existing method for deducing death time according to the degree of corneal opacity of a cadaver eye comprises two types of qualitative and quantitative methods:

(1) the qualitative method for roughly judging the approximate range of death time by dividing the degree of corneal opacity of the cadaver eye into light degree, medium degree and severe degree according to the individual subjective experience of an examiner is used as an empirical rule, and the inference error is large;

(2) the quantitative method for deducing death time by measuring the turbidity degree of the digital image of the cornea of the cadaver cannot be popularized and applied due to different field light source conditions, local distortion caused by image reflection or shadow, complicated digital image processing steps and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the following technical scheme: integration cadaver cornea formation of image and dead time analytical equipment, including barrel, light, fixed column, cover, cell-phone fixed bolster and cell-phone, the barrel is white plastics drum, and the bottom of barrel is provided with annular flexible glue, four light are installed to the inner wall of barrel, and the lateral wall of barrel is provided with the data line interface, and one side fixedly connected with fixed column of barrel, be fixed with the cover directly over the barrel, and the central point department of cover is provided with the shooting window, the top of fixed column is fixed with the cell-phone fixed bolster, and the spiral is fixed with the knob on the cell-phone fixed bolster, and the cell-phone is fixed in the cover top.

Preferably, the quantity of light is provided with 4, and the light sets up about the vertical axis symmetry of barrel, can effectively eliminate the shadow problem of corpse cornea image, and the model of light is the SMD LED lamp pearl of 2835 type.

Preferably, the ratio of the inner diameter of the cylinder body, the height of the illuminating lamp and the height of the cylinder cover is 1.5: 1: 3-2.5: 1: 4, the device can adapt to different types of orbit structures in the range, and effectively solves the problems of reflection of the cadaver cornea image and the like.

Preferably, the aperture of the shooting window is matched with the shape of a rear camera of a mobile phone used in a matched mode, and a closed space can be formed to adapt to any case scene with any external light source condition.

Preferably, the rear camera of the mobile phone is more than 3000 ten thousand pixels, so that the analysis requirement of high-quality digital images can be met.

The utility model has the advantages that:

this integration corpse cornea formation of image and dead time analytical equipment, it is convenient to carry, the operation is simple and easy, built-in light sets up about the symmetry of the vertical axis of barrel, can effectively eliminate the shadow of corpse cornea image, the reflection of light problem, through the barrel, the inside airtight space that cover and cell-phone formed is used with the light source collocation that built-in light provided, the case that can adapt to any light source condition sends out the scene, can carry out corpse cornea formation of image and dead time analysis simultaneously, basic level criminal technical staff accessible the device carries out dead time inference at the scene, to quick, high-efficient investigation destiny case plays fine impetus.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic top view of a partial structure of the present invention;

FIG. 3 is a schematic front view of the present invention;

fig. 4 is a bottom view structural diagram of the present invention.

In the figure: 1. a barrel; 2. annular soft rubber; 3. an illuminating lamp; 4. a data line interface; 5. fixing a column; 6. A cylinder cover; 7. a shooting window; 8. a mobile phone fixing support; 9. a knob; 10. a mobile phone; 11. the rear camera of the mobile phone.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: an integrated cadaver cornea imaging and death time analysis device comprises a cylinder body 1, an illuminating lamp 3, a fixed column 5, a cylinder cover 6, a mobile phone fixed support 8 and a mobile phone 10;

the bottom end of the barrel body 1 is provided with annular soft rubber 2 to adapt to eye socket structures of different types, a fixing column 5 is arranged on the outer side of the barrel body 1, a barrel cover 6 is fixed right above the barrel body 1 through the fixing column 5, a shooting window 7 is arranged in the center of the barrel cover 6, a mobile phone fixing support 8 is fixed on the fixing column 5, a knob 9 is spirally fixed on the mobile phone fixing support, a mobile phone 10 is fixed at the upper end of the barrel cover by screwing the knob 9, a rear camera 11 of the mobile phone is matched with the shooting window 7 in shape, and the barrel body 1, the barrel cover 6 and the mobile phone 10 form an enclosed space inside the device together;

the number of the illuminating lamps 3 is four, the illuminating lamps are symmetrically arranged about the vertical central axis of the cylinder body, the shadow problem of a cadaver cornea image can be effectively eliminated, and the model of each illuminating lamp 3 is 2835 type surface mount LED lamp beads;

the utility model uses four lighting lamps 3, which can supply power through the data line interface 4 on the outer side wall of the cylinder 1, and can provide all-round lighting beams, the angle of the lighting lamps can ensure to cover the surface of the whole cadaver cornea, if linear or circular lighting tubes are used, shadow can be formed on one side of the observed cadaver cornea or strong reflection points can be formed in the pupil area in the center of the cornea, which is not beneficial to the subsequent image processing and analysis;

the proportion of the inner diameter of the cylinder body 1, the height of the illuminating lamp 3 and the height of the cylinder cover 6 is 1.5: 1: 3-2.5: 1: the optimal range is 4, the reflecting problem on the image of the cadaver cornea can be effectively eliminated in the range, when the inner diameter of the cylinder body 1 is 4.0cm, the height of the lamp 3 is 2.0cm, and the height of the cylinder cover 6 is 8.0cm, the imaging of the corneal epithelium of the cadaver is most suitable for synthesis, and the imaging can be adjusted according to the requirement.

The working principle is as follows: when the mobile phone rear camera is used, firstly, the adaptive cylinder cover 6 is selected according to the shape of the used mobile phone rear camera 11, and the adaptive cylinder cover 6 is fixed right above the cylinder 1 through the fixing column 5 on the outer side of the cylinder 1;

secondly, fixing a mobile phone fixing support 8 on a fixing column 5, fixing a mobile phone 10 at the upper end of a barrel cover 6 by screwing a knob 9 on the mobile phone fixing support 8, and enabling a rear camera 11 of the mobile phone to be opposite to a shooting window 7 in the center of the barrel cover 6;

thirdly, the data line interface 4 on the outer side wall of the barrel 1 is connected with a mobile power supply or a mobile phone through a matched data line to supply power to the illuminating lamp 3;

and finally, fixing the portable integral cadaver cornea imaging and death time inference device right above the cadaver cornea, shooting a cadaver cornea image by using the mobile phone 10 under the conditions of a closed environment and uniform and stable illumination in the device, automatically performing mathematical analysis on the standardized cadaver cornea image by using a built-in application program of the mobile phone 10, extracting color and texture characteristic parameters for fitting calculation, and outputting a death time inference result until the operation is finished.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Integration corpse eye cornea formation of image and dead time analytical equipment, including barrel (1), light (3), fixed column (5), cover (6), cell-phone fixed bolster (8) and cell-phone (10), its characterized in that: barrel (1) is white plastics drum, and the bottom of barrel (1) is provided with annular flexible glue (2), four light (3) are installed to the inner wall of barrel (1), and the lateral wall of barrel (1) is provided with data line interface (4), one side fixedly connected with fixed column (5) of barrel (1), be fixed with cover (6) directly over barrel (1), and the central point department of putting of cover (6) is provided with shoots window (7), the top of fixed column (5) is fixed with cell-phone fixed bolster (8), and cell-phone fixed bolster (8) go up the spiral and be fixed with knob (9), and cell-phone (10) are fixed in cover (6) top.

2. The integrated cadaver cornea imaging and death time analysis device according to claim 1, wherein: the quantity of light (3) is provided with 4, and light (3) set up about the vertical axis symmetry of barrel (1), and the model of light (3) is the SMD LED lamp pearl of 2835 type.

3. The integrated cadaver cornea imaging and death time analysis device according to claim 1, wherein: the proportion of the inner diameter of the cylinder body (1), the height of the illuminating lamp (3) and the height of the cylinder cover (6) is 1.5: 1: 3-2.5: 1: 4.

4. the integrated cadaver cornea imaging and death time analysis device according to claim 1, wherein: the aperture of the shooting window (7) is matched with the shape of a mobile phone rear camera (11) used in a matched mode.

5. The integrated cadaver cornea imaging and death time analysis device according to claim 4, wherein: the rear camera (11) of the mobile phone is 3000 ten thousand pixels.