Table type biological material detection machine

Abstract

The utility model discloses a table type biological material detection machine, relates to the technical field of trace identification, and solves the problems that the existing biological material detection equipment is single in function and inconvenient in material taking. A display screen; a camera; at least one filter; a plurality of lamp beads capable of emitting light with different wavelengths are arranged on the lamp bead control circuit board; the main control board is electrically connected with the camera, the display screen and the lamp bead control circuit board; and the power panel is electrically connected with the master control panel, and the power panel is externally connected with a power supply. According to the biological sample machine, the camera and the display screen are matched to realize visual evidence obtaining operation, light rays with corresponding wavelengths can be selected according to requirements, and the camera can shoot the condition of a biological sample generating fluorescence reaction on a material evidence through the filter and upload an image to the display screen to be displayed; therefore, the display screen can be directly observed for evidence collection during evidence collection.

Description

TECHNICAL FIELD

[0001] The utility model relates to trace identification technical field, especially a table type biological evidence machine. BACKGROUND

[0002] The biological evidence equipment developed by using the principle that objects will excite fluorescence reaction under the irradiation of specific wavelength spectrum is widely applied in various fields requiring survey, especially in the field of criminal investigation, through the biological evidence equipment, criminal investigators can survey the biological traces of crime scenes such as fingerprints, hair, bones, blood and human secretions.

[0003] However, the light sources on the currently used biological evidence equipment are relatively single, usually only several kinds. Since different biological evidence will not excite the same fluorescence reaction under the irradiation of specific wavelength spectrum, the display effect of certain biological evidence is not very good if the types of light sources are few, and the contour shape of the biological evidence cannot be clearly displayed. Therefore, certain special biological evidence cannot be well displayed. Meanwhile, the existing biological evidence equipment is mostly biological evidence discovery equipment only equipped with light sources, most of the biological evidence equipment is not equipped with cameras or CCD cameras, and does not have a visual window, so that the evidence traces can only be observed and searched by naked eyes, which is laborious and inconvenient for taking pictures of the evidence. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the above problems, and designs a table type biological evidence machine, which solves the problems of single function and inconvenient sampling of the existing biological evidence equipment.

[0005] The technical scheme of the utility model for achieving the above-mentioned purpose is a table type biological evidence machine, which comprises:

[0006] a shell;

[0007] a display screen, which is installed on the shell;

[0008] a camera, which is vertically fixed to the inner side of the shell, and the lens of the camera faces downward, and the camera has a detection area for placing evidence below it;

[0009] at least one filter, which is located below the lens of the camera;

[0010] a lamp bead control circuit board, which has a plurality of lamp beads capable of emitting light rays of different wavelengths, and the light rays emitted by the plurality of lamp beads converge in the detection area;

[0011] a general control board, which is arranged in the interior of the shell and is electrically connected with the camera, the display screen and the lamp bead control circuit board respectively;

[0012] A power board, which is electrically connected with the master control board and externally connected with a power source.

[0013] Preferably, the bottom of the shell is provided with a lamp bead fixing plate, the middle of the lamp bead fixing plate is provided with a view port for facilitating camera shooting and a plurality of holes corresponding to the lamp beads.

[0014] Preferably, the lamp bead control circuit board comprises a first lamp bead control circuit board, a second lamp bead control circuit board and a third lamp bead control circuit board, the first lamp bead control circuit board is fixed above the lamp bead fixing plate, the second lamp bead control circuit board and the third lamp bead control circuit board are each provided with two pieces, the two pieces of the second lamp bead control circuit board are symmetrically arranged on the left and right sides of the upper part of the lamp bead fixing plate, and the two pieces of the third lamp bead control circuit board are symmetrically arranged on the front and back sides of the upper part of the lamp bead fixing plate.

[0015] Preferably, the bottom of the lamp bead fixing plate is provided with a distance measuring sensor electrically connected with the master control board.

[0016] Preferably, each of the left and right sides of the inner side of the shell is provided with a skeleton, and a mounting plate is arranged between the two skeletons, and the camera is vertically fixed on the mounting plate.

[0017] Preferably, two motors are vertically fixed on the mounting plate, two filter mounting supports arranged in parallel in the up-down direction are arranged below the skeleton, the output ends of the two motors are respectively connected with the two filter mounting supports, a plurality of filters are arranged on the circumferential direction of each filter mounting support, the projection of the filters on one mounting support overlaps with the projection of the filters on the other mounting support in the up-down direction, and the projections of the two overlapping filters are located within the field of view of the camera.

[0018] Preferably, a protective plate is arranged between the mounting plate and the filter mounting supports, and the protective plate is fixedly installed on the bottom of the mounting plate.

[0019] Preferably, an installation back plate is arranged on the inner side of the shell, the two ends of the installation back plate are respectively connected with the two skeletons, a bracket connecting plate is arranged on the back of the outer side of the shell, the bracket connecting plate is fixedly connected with the installation back plate through screws, and the bracket connecting plate is provided with a plurality of mounting holes.

[0020] Preferably, an interface assembly is arranged on the back of the outer side of the shell, the interface assembly comprises a power interface and a USB interface, the power interface is electrically connected with the power board, and the USB interface is electrically connected with the master control board.

[0021] Preferably, handles are arranged on the left and right sides of the shell, and the handles are fixed on the skeletons through screws.

[0022] Compared with the prior art, the present application has the beneficial effects that:

[0023] The utility model discloses a plurality of lamp beads are arranged on the lamp bead control circuit board, and each lamp bead can emit light of different wavelengths, and the corresponding wavelength of lamp bead can be selected according to the requirement, and the corresponding wavelength of light emitted by the lamp bead can irradiate the evidence in the lower area to be measured, and the evidence can excite fluorescence reaction under the irradiation of the specific wavelength spectrum, and the biological sample on the evidence can be shown, the camera can shoot the biological sample through the filter and upload the image to the display screen to show, so that the evidence can be directly observed on the display screen to take the evidence, and the evidence taking requirement of saliva stain, sperm stain, urine stain, blood stain, hair, skeleton, tooth, exfoliated cell and various biological samples can be satisfied, and the camera and the display screen can realize visualization, and the evidence trace can be directly observed and searched through the display screen, and the shooting and taking of the evidence are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure schematic diagram of the table type biological sample machine in the utility model;

[0025] Figure 2 It is the back structure schematic diagram of the table type biological sample machine;

[0026] Figure 3 It is the bottom structure schematic diagram of the table type biological sample machine;

[0027] Figure 4 It is the structure schematic diagram of the table type biological sample machine when removing the shell;

[0028] Figure 5 It is the structure schematic diagram of another angle of view of Figure 4 ;

[0029] Figure 6 It is the structure schematic diagram of the table type biological sample machine when removing the shell, the framework and installing the back plate;

[0030] Figure 7 It is the structure schematic diagram of another angle of view of Figure 6 ;

[0031] Figure 8 It is the structure schematic diagram of the table type biological sample machine when removing the shell, the framework, installing the back plate and installing the plate;

[0032] Figure 9 It is the structure schematic diagram of the lamp bead control circuit board installed on the lamp bead fixing plate.

[0033] In the figure, 1, shell; 101, switch; 102, handle; 103, area to be detected; 2, display screen; 3, interface assembly; 31, power interface; 32, USB interface; 4, support connecting plate; 5, lamp bead fixing plate; 6, lamp bead; 7, distance measuring sensor; 8, camera; 9, mounting plate; 10, master control board; 11, power board; 12, skeleton; 13, mounting back plate; 14, protective plate; 15, motor; 16, filter mounting support; 17, filter; 18, lamp bead control circuit board; 181, first lamp bead control circuit board; 182, second lamp bead control circuit board; 183, third lamp bead control circuit board. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0035] As Figures 1-5 shown, a preferred embodiment of the utility model provides a table type biological detection material machine, the table type biological detection material machine mainly includes shell 1, display screen 2, camera 8, master control board 10, lamp bead control circuit board 18, power board 11, motor 15, skeleton 12, mounting back plate 13, filter 17 and filter mounting support 16 and the like, wherein the inside of shell 1 has a cavity, and camera 8, master control board 10, lamp bead control circuit board 18, power board 11, motor 15, skeleton 12, mounting back plate 13, filter 17 and filter mounting support 16 and the like are all installed in the cavity.

[0036] The skeleton 12 is provided with two, symmetrically installed on the two sides of the inner side of the shell 1, the mounting back plate 13 is installed on the back of the inner side of the shell 1, and the two ends of the mounting back plate 13 are fixedly connected with the two skeletons 12 through screws, the lamp bead fixing plate 5 is installed at the bottom of the shell 1, and the lower sides of the skeleton 12 and the mounting back plate 13 are fixedly connected with the lamp bead fixing plate 5 through screws, so that the mounting back plate 13 and the two skeletons 12 jointly form a stable frame structure, which can play a supporting role and simultaneously strengthen the structural strength of the shell 1.

[0037] Referring to Figures 4-6 , the mounting plate 9 is located between the two skeletons 12, and the two ends of the mounting plate 9 are fixedly connected with the two skeletons 12 through screws. The motor 15 is provided with two, and the two motors 15 are vertically fixed at positions close to the two ends of the mounting plate 9. The filter mounting support 16 is circular in shape and is provided with two. The two filter mounting supports 16 are distributed in parallel in an up-down direction and are fixedly connected with the output ends of the two motors 15 respectively, and the two motors 15 control the rotation of the two filter mounting supports 16 respectively.

[0038] Referring to Figure 8 A plurality of circular holes are formed in the circumferential direction of the filter mounting bracket 16, and a filter 17 is mounted in each of the circular holes. The filters 17 in different circular holes are of different specifications. The two filter mounting brackets 16 overlap in a middle region. The projection of one filter 17 in one of the filter mounting brackets 16 overlaps the projection of one filter 17 in the other filter mounting bracket 16 in the overlapping region. In this way, the lens of the camera 8 can pass through the two superimposed filters 17 to capture the biological evidence below.

[0039] The filters 17 serve to protect the lens of the camera 8, eliminate or weaken the reflection in the light, improve the picture effect, adjust the color temperature, achieve special effects, and change the image tone. Two motors 15 are used to control the rotation of the two filter mounting brackets 16 to switch different filters 17. In this way, when the filters 17 on the two filter mounting brackets 16 are used in combination, dozens of different combination schemes can be extended for selection.

[0040] The camera 8 is vertically fixed on the mounting plate 9, and the camera 8 is located directly above the two overlapping filters 17. The lens of the camera 8 faces downward, and the lens of the camera 8 can pass through the two overlapping filters 17 to capture the biological evidence below.

[0041] Referring to Figures 7-9 The middle of the lamp bead fixing plate 5 has a rectangular hole, so that the camera 8 can pass through the rectangular hole to capture the biological evidence below. The bottom surface of the lamp bead fixing plate 5 has five surfaces, and the five surfaces are spliced to form a prismatic conical surface. The upper part of the lamp bead fixing plate 5 is also prismatic, and it also has five surfaces, each of which has a plurality of holes, each of which corresponds to a lamp bead 6 on the lamp bead control circuit board 18. In this way, the light emitted by the lamp bead 6 can pass through the hole to illuminate the evidence placed in the detection area 103 below, so that the biological evidence on the evidence is displayed.

[0042] As Figure 9 shown, the lamp bead control circuit board 18 includes a first lamp bead control circuit board 181, a second lamp bead control circuit board 182, and a third lamp bead control circuit board 183. The second lamp bead control circuit board 182 and the third lamp bead control circuit board 183 each have two pieces. Two second lamp bead control circuit boards 182 are respectively mounted and fixed on the left and right two surfaces of the upper part of the lamp bead fixing plate 5, and the third lamp bead control circuit board 183 is respectively mounted and fixed on the front and rear two surfaces of the upper part of the lamp bead fixing plate 5. The first lamp bead control circuit board 181 is mounted and fixed on the middle plane of the lamp bead fixing plate 5. At the same time, the middle of the first lamp bead fixing plate 5 also has a rectangular hole to prevent blocking the field of view of the camera 8.

[0043] The light-emitting diodes 6 on each light-emitting diode control circuit board 18 are of different wavelengths and emit light of different colors.

[0044] As shown in Figure 1 , Figure 9 , the lower part of the light-emitting diode fixing plate 5 is a detection area 103, which has the same size as the field of view of the camera 8. The light-emitting diodes 6 on the first light-emitting diode control circuit board 181 are uniformly distributed around the periphery of the central rectangular hole, and the light-emitting diodes 6 of corresponding wavelengths are symmetrically distributed along the center of the rectangular hole. The structures of the light-emitting diodes 6 on the two second light-emitting diode control circuit boards 182 are the same, but the two second light-emitting diode control circuit boards 182 are also symmetrically distributed along the center of the rectangular hole. Meanwhile, the structures of the light-emitting diodes 6 on the two third light-emitting diode control circuit boards 183 are the same, and the two third light-emitting diode control circuit boards 183 are also symmetrically distributed along the center of the rectangular hole.

[0045] Since the second light-emitting diode control circuit board 182 and the third light-emitting diode control circuit board 183 are installed on the inclined surface, and in addition, the light-emitting diodes 6 on the second light-emitting diode control circuit board 182 and the third light-emitting diode control circuit board 183 are symmetrically distributed, the light emitted by the light-emitting diodes 6 of corresponding wavelengths on each light-emitting diode control circuit board 18 can be converged in the detection area 103 below and directly irradiate all corners of the evidence, ensuring that the evidence is in a shadowless environment when biological trace evidence is discovered, which is conducive to trace evidence discovery.

[0046] The master control board 10 and the power supply board 11 are both installed inside the shell 1, and the five light-emitting diode control circuit boards 18 are electrically connected to the master control board 10. The master control board 10 is a master control circuit board that can process and analyze data and control the work of other electronic components.

[0047] As shown in Figure 4 , a protective plate 14 is also installed at the bottom of the mounting plate 9, which is located above the light-emitting diode control circuit board 18 and serves as a protective function to protect the light-emitting diode control circuit board 18.

[0048] As shown in Figure 1 , Figure 4 , the power supply board 11 and the display screen 2 are also electrically connected to the master control board 10. The display screen 2 is installed on the front of the shell 1, and the display screen 2 is a touch display screen 2 that can select and switch different filter 17 matching schemes and select light-emitting diodes 6 that can emit light of corresponding wavelengths.

[0049] Referring to Figure 2The back of the outer shell 1 is also provided with an interface assembly 3, which mainly includes a power interface 31 and a USB interface 32. The power interface 31 is electrically connected with the power board 11. The power interface 31 is externally connected with a power supply. The power board 11 automatically distributes the voltage to different electronic devices. The USB interface 32 is electrically connected with the master control board 10. The USB interface 32 can be externally connected with a computer and other electronic products. The signal is transmitted to the computer through the USB interface 32, so that the window displayed on the display screen 2 can be projected on the computer.

[0050] As shown in Figure 3 , a distance measuring sensor 7 electrically connected with the master control board 10 is arranged at each of the four corners of the bottom of the lamp bead fixing plate 5. The distance measuring sensor 7 can detect the distance between the lower object and the distance measuring sensor 7 in real time, so as to adjust the distance between the camera 8 and the object, so that the camera 8 can clearly shoot the object below.

[0051] Referring to Figure 2 , Figure 5 , a bracket connecting plate 4 is also mounted on the back of the outer shell 1. The bracket connecting plate 4 is fixedly connected with the mounting back plate 13 inside the outer shell 1 through screws. Meanwhile, the bracket connecting plate 4 has a plurality of mounting holes, so as to fix and install the desktop biological material machine on a certain device.

[0052] As shown in Figure 1 , in order to facilitate holding, a handle 102 is mounted on each of the left and right sides of the outer shell 1. The handle 102 is fixed on the framework 12 through screws. A person can manually hold the handles 102 on both sides to carry the desktop biological material machine.

[0053] A switch 101 is also arranged on the top of the outer shell 1. The switch 101 is electrically connected with the master control board 10, and is used to turn on or off the desktop biological material machine.

[0054] During operation, the object is placed in the lower detection area 103. Then, the display screen 2 is manually touched to select the corresponding filter 17 matching scheme and the lamp bead 6 capable of emitting light of a corresponding wavelength. The light of the corresponding wavelength emitted by the lamp bead 6 will directly irradiate all surfaces of the object. According to the principle that the irradiation of a specific wavelength spectrum can stimulate a fluorescent reaction, the biological material on the object will be displayed. Then, the camera 8 will shoot the object below, and the image will be uploaded to the display screen 2 to be displayed. During evidence collection, the display screen 2 can be directly observed to collect evidence.

[0055] Since there are many types of solutions, sometimes it is not known which combination of filter 17 and lamp bead 6 selection will produce the best imaging effect. Therefore, the system can automatically test and shoot all the filter 17 combinations and lamp bead 6 selection solutions in turn, and present the image on the display screen 2, and then manually select the best imaging solution based on the image on the display screen 2.

[0056] The above technical solutions only reflect the preferred technical solutions of the present utility model. Any changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present utility model and fall within the scope of protection of the present utility model.

Claims

1. A desktop biological sample machine, characterized in that: include: Housing (1); A display screen (2), wherein the display screen (2) is mounted on the housing (1); A camera (8), wherein the camera (8) is vertically fixed on the inner side of the housing (1), with the lens of the camera (8) facing downward, and a to-be-tested area (103) for placing a test material is provided directly below the camera (8); at least one filter (17), the filter (17) being located below the lens of the camera (8); A lamp bead control circuit board (18), wherein the lamp bead control circuit board (18) has a plurality of lamp beads (6) capable of emitting light of different wavelengths, and the light emitted by the plurality of lamp beads (6) converges on the area to be inspected (103); A main control board (10), the main control board (10) is arranged inside the housing (1) and is electrically connected to the camera (8), the display screen (2) and the lamp bead control circuit board (18); A power board (11), the power board (11) is electrically connected to the main control board (10), and the power board (11) is externally connected to a power source.

2. A desktop biological specimen detector according to claim 1, characterized in that: A lamp bead fixing plate (5) is provided at the bottom of the housing (1), and the middle of the lamp bead fixing plate (5) has a viewport for facilitating camera (8) shooting and a plurality of holes corresponding to the lamp beads (6).

3. A desktop biological specimen detector according to claim 2, characterized in that: The lamp bead control circuit board (18) comprises a first lamp bead control circuit board (181), a second lamp bead control circuit board (182) and a third lamp bead control circuit board (183), wherein the first lamp bead control circuit board (181) is fixed above the lamp bead fixing plate (5), and two of the second lamp bead control circuit board (182) and the third lamp bead control circuit board (183) are provided, wherein the two second lamp bead control circuit boards (182) are symmetrically arranged on the left and right sides of the upper part of the lamp bead fixing plate (5), and the two third lamp bead control circuit boards (183) are symmetrically arranged on the front and back sides of the upper part of the lamp bead fixing plate (5).

4. A desktop biological specimen detector according to claim 2, characterized in that: A distance measuring sensor (7) electrically connected to the main control board (10) is provided at the bottom of the lamp bead fixing plate (5).

5. A desktop biological specimen detector according to claim 1, characterized in that: A frame (12) is provided on each of the left and right sides of the inner side of the housing (1), a mounting plate (9) is provided between the two frames (12), and the camera (8) is vertically fixed on the mounting plate (9).

6. A desktop biological specimen detector according to claim 5, characterized in that: Two motors (15) are vertically fixed on the mounting plate (9), and two filter mounting brackets (16) are arranged below the frame (12) and are distributed in parallel up and down. The output ends of the two motors (15) are respectively connected to the two filter mounting brackets (16), and a plurality of filters (17) are arranged on the circumference of each filter mounting bracket (16). The projection of the filter (17) on one mounting bracket overlaps with the projection of the filter (17) on the other mounting bracket, and the projections of the two overlapping filters (17) are located within the field of view of the camera (8).

7. A desktop biological specimen detector according to claim 6, characterized in that: A protective plate (14) is provided between the mounting plate (9) and the filter mounting bracket (16), and the protective plate (14) is fixedly mounted on the bottom of the mounting plate (9).

8. The desktop biological specimen detector according to claim 5, characterized in that: A mounting back plate (13) is provided on the inner side of the housing (1), and two ends of the mounting back plate (13) are respectively connected to two frames (12). A bracket connecting plate (4) is provided on the back side of the outer side of the housing (1), and the bracket connecting plate (4) is fixedly connected to the mounting back plate (13) by screws, and the bracket connecting plate (4) has a plurality of mounting holes.

9. The desktop biological specimen detector according to claim 8, characterized in that: An interface assembly (3) is provided on the back side of the outer side of the housing (1), and the interface assembly (3) includes a power interface (31) and a USB interface (32). The power interface (31) is electrically connected to the power board (11), and the USB interface (32) is electrically connected to the main control board (10).

10. The desktop biological specimen detector according to claim 5, characterized in that: Handles (102) are provided on the left and right sides of the housing (1), and the handles (102) are fixed to the frame (12) by screws.

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