CN210533999U - Cartridge case material evidence characteristic image acquisition measuring device - Google Patents
Cartridge case material evidence characteristic image acquisition measuring device Download PDFInfo
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- CN210533999U CN210533999U CN201920851338.6U CN201920851338U CN210533999U CN 210533999 U CN210533999 U CN 210533999U CN 201920851338 U CN201920851338 U CN 201920851338U CN 210533999 U CN210533999 U CN 210533999U
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Abstract
The utility model discloses a shell case material evidence characteristic image acquisition measuring device, include: adjusting the platform to realize the relative displacement of the shell material evidence in the X/Y/Z direction; the annular illuminating light source component illuminates the shell physical evidence; the microscopic imaging assembly is used for carrying out zoom imaging and photographing on the shell physical evidence; and the supporting frame is used for supporting and fixing the adjusting platform, the annular illuminating light source and the microscopic imaging assembly. The utility model discloses according to court science firearms shooting shell vestige inspection standard and flow, work such as collection observation, measurement, sign to shell material evidence characteristic vestige improves for the work of drawing of shell material evidence characteristic vestige becomes more swift, the inspection, the uniformity of comparing, traceability is strong, product convenient operation, small in size, degree of automation is high, it is the good equipment of the microscope that replaces current court science bullet shell material evidence inspection appraisal field wide use, and the equipment of the same kind has not been seen in the existing market yet.
Description
Technical Field
The utility model relates to a court science material evidence vestige inspection appraisal application especially relates to a shell case material evidence characteristic image acquisition measuring device.
Background
At present, in the work of checking and identifying evidence traces of bullet shells in China court science, the evidence traces of bullet shells are compared and identified manually by adopting a microscope, a digital microscope and auxiliary tools such as a vernier caliper, and secondary trace characteristics remained in the processes of loading, firing and withdrawing the bullet shells are collected and measured to compare the bullet shells. However, as the microscope is a general device, the microscope cannot be used for deeply customizing the shooting bullet shell characteristic trace information on the use operation consistency and the convenience, so that the comparison work of the court science bullet shell evidence trace is not only complicated in operation, but also extremely non-repeatable, and brings great inconvenience to criminal technical inspection and identification work.
At present, forensic science bullet shell material evidence inspection and identification equipment mainly relies on two-dimensional image-based comparison equipment such as a stereoscopic microscope and a digital microscope with binocular stereoscopic observation. In the forensic science cartridge case evidence trace comparison work, the comparable characteristic information comprises a cartridge case port trace, a firing pin trace, an indication rod trace, a pull case groove trace and a shell throwing and raising trace, and a series of secondary marks of a gun firing pin, such as 'gun seed tongue mark' and 'firing pin shoulder digital mark', which mostly remain at the bottom or bottom edge of the cartridge case, in the observation and comparison process by adopting a microscope, as the instrument is not special equipment for the bullet shell, the clamping fixation, the axial posture, the external illumination, the shadow, the microscopic magnification and the like of the shell material evidence cannot be unified, and the matched software system cannot realize the functions of automatic identification, marking, measurement, characteristic input and the like, so that the comparison and inspection work of the bullet shell material evidence becomes very troublesome and does not have traceability.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model relates to a bullet, shell case, wire rod anchor clamps that are used for material evidence vestige three-dimensional morphology measuring apparatu to go up to use have also been used simultaneously in the used quick, convenient measuring instrument of collection and measurement of material evidence vestige two-dimensional characteristic information.
Cartridge case material evidence characteristic image acquisition measuring device includes:
adjusting the platform to realize the relative displacement of the shell material evidence in the X/Y/Z direction;
the annular illuminating light source component illuminates the shell physical evidence;
the microscopic imaging assembly is used for carrying out zoom imaging and photographing on the shell physical evidence;
and the supporting frame is used for supporting and fixing the adjusting platform, the annular illuminating light source and the microscopic imaging assembly.
Furthermore, the adjusting platform comprises a platform chassis, an X/Y axis sliding table, a Z axis adjusting assembly, a limiting assembly and a clamp tray;
the X/Y-axis sliding table is fixed on the platform chassis, and the clamp tray is fixed on the upper surface of the X/Y-axis sliding table.
Further, the annular illumination light source assembly comprises an annular light source, a light source supporting plate, a front supporting beam, a light source assembly driving motor, an optical axis assembly, a screw rod assembly and a limiting assembly;
the annular light source is fixed on the lower surface of one end of the light source supporting plate;
the optical axis assembly comprises an optical axis and a linear bearing, and the lead screw assembly comprises a lead screw and a lead screw flange; the linear bearing and the lead screw flange are fixed on the upper surface of the other end of the supporting plate, and the optical axis and the lead screw are respectively installed with the linear bearing and the lead screw flange in a matched manner;
the upper end of the optical axis penetrates through and is relatively fixed on the front supporting beam, the lower end of the optical axis penetrates through and is relatively fixed on the light source supporting plate, and the light source supporting plate is fixed on the supporting frame;
the upper end of the screw rod penetrates through the front supporting beam and is connected with a light source assembly driving motor fixed on the front supporting beam; the lower end of the screw rod penetrates out of the light source supporting plate;
the limiting assembly comprises a limiting switch and a limiting block; the limit switch is fixed on the side wall of one end of the light source supporting plate, which is far away from the annular light source; the limiting block is fixed on the supporting frame and is matched with the limiting switch for limiting.
Furthermore, the microscopic imaging assembly comprises a zoom lens assembly, an industrial camera, a zoom driving assembly, a rear supporting beam and a reflecting prism assembly;
the bottom of the zoom lens component is connected with an industrial camera, and the front end of the zoom lens is fixed on the rear supporting beam through the sleeved lens front and rear supporting frames; the zoom lens is fixed in the front and rear support frames of the lens by 4 fastening bolts respectively;
the zoom driving assembly comprises a zoom driving motor and a zoom driving wheel, and the zoom driving motor is fixed at the lower part of the front supporting frame of the lens through a supporting seat; the zoom driving wheel is fixed at one end of the driving shaft, and the other end of the driving shaft is connected with the zoom driving motor;
the reflecting prism assembly comprises a visual light path reflecting prism and a reflecting prism support frame, the reflecting prism support frame is fixed on the support frame, and the visual light path reflecting prism is fixed in the reflecting prism support frame.
Further, braced frame form by preceding, rear panel, left and right curb plate, the base concatenation, the rear panel on set up the cable frame, the front panel on set up the hatch door.
Furthermore, the Z-axis adjusting assembly comprises a linear guide rail, a sliding block, a screw nut assembly and a driving motor;
the linear guide rail is fixed on the support frame, the sliding block is fixed with the guide rail in a sliding fit manner, and the sliding block is fixed on the outer wall of one end of the platform chassis;
the screw rod nut component comprises a screw rod, a nut and a fixing piece; the nut is fixed on the platform chassis, and the screw rod and the nut are installed in a matched mode; the upper end of the screw rod is connected with a driving motor, and the driving motor is fixed on the fixing piece through a motor supporting seat; the fixing piece is fixed on the supporting frame.
Furthermore, the limit component comprises a limit switch and a limit block;
the three limiting assemblies are respectively an X-axis limiting assembly, a Y-axis limiting assembly and a Z-axis limiting assembly and respectively correspond to the limiting of the adjusting platform in X, Y, Z three-dimensional space movement;
the left and right limiting blocks in the X-axis limiting assembly are fixed on the side wall of the platform chassis, and the left and right limiting switches are mounted at the bottom of an X-axis sliding block on the X/Y sliding table and are matched with the X-axis limiting switches for limiting;
the front limiting block and the rear limiting block in the Y-axis limiting assembly are fixed on the side wall of an X-axis sliding block of the X/Y-axis sliding table, and a Y-axis limiting switch is fixed at the bottom of one end, close to the Y-axis limiting block, of the fixture tray and is matched with the Y-axis limiting switch for limiting;
and an upper limiting block in the Z-axis limiting assembly is fixed on the inner wall of the supporting frame beside the linear guide rail, a lower limiting block is a base upper plane of the device, and Z-axis limiting switches are fixed on the front side and the rear side of the platform chassis, close to the third limiting block, and are matched with the Z-axis limiting switches for limiting.
The device is not limited to only carry out image acquisition on the physical evidence characteristics of the cartridge case, and can also carry out image acquisition on other small objects.
The utility model discloses according to court science firearms shooting shell vestige inspection standard and flow, work such as collection observation, measurement, sign to shell material evidence characteristic vestige improves for the work in advance of shell material evidence characteristic vestige becomes more swift, the inspection, the uniformity of comparing, traceability is strong, product convenient operation, small in size, degree of automation is high, it is the good equipment of the microscope that replaces current court science bullet shell material evidence inspection appraisal field wide use, and the equipment of the same kind has not been seen in the existing market yet.
Drawings
Fig. 1a is a schematic view of the external three-dimensional structure of the present invention.
Fig. 1b is a schematic view of an external three-dimensional structure at another viewing angle of the present invention.
Fig. 1c is an external elevation view of the present invention.
Fig. 1d is an external rear view of the present invention.
Fig. 2 is a schematic view of the internal three-dimensional structure of the present invention.
Fig. 3 is a schematic perspective view of the supporting frame of the present invention.
Fig. 4 is an assembly view of the adjustment platform of the present invention.
Fig. 5 is an assembly view of another viewing angle of the adjustment platform of the present invention.
Fig. 6 is a schematic perspective view of the annular illumination light source assembly of the present invention.
Fig. 7 is a schematic perspective view of another view angle of the annular illumination light source assembly of the present invention.
Fig. 8 is a schematic perspective view of the micro-imaging assembly of the present invention.
Fig. 9 is a side view of the inventive micro-imaging assembly.
Fig. 10 is an electrical connection diagram according to the present invention.
Fig. 11 is an electrical connection diagram of the front panel and the rear panel according to the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1a, 1b, 1c, 1d and 2, the device for acquiring and measuring evidence characteristic images of cartridge cases comprises: adjusting the platform 1 to realize the relative displacement of the shell material evidence in the X/Y/Z direction; the annular illumination light source component 2 illuminates the shell physical evidence; the microscopic imaging component 3 is used for carrying out zoom imaging and photographing on the shell physical evidence; and a support frame inside the shield 4 for supporting and fixing the adjusting platform, the annular illuminating light source and the microscopic imaging assembly.
As shown in figure 3, the supporting frame of the utility model is formed by splicing a front panel 4-1, a rear panel 4-2, a left side panel 4-3, a right side panel 4-4 and a base 4-5, wherein a cable frame 4-6 is arranged on the rear panel 4-2 and between the left side panel 4-3 and the right side panel 4-4, and a cabin door 4-7 is arranged on the front panel. The upper part between the left and right side plates 4-3, 4-4 is also fixed with a front supporting beam 4-8 and a rear supporting beam 4-9. The bases 4-5 are made of 6061 aluminum alloy plates and are mainly used for supporting left and right side plates, various cables in the fixing device and various components and parts of the whole device. The upper inner wall was milled with 8 slots of 50 x 7mm square to reduce the weight of the device. The left side plate, the right side plate, the front panel, the front supporting beam and the rear supporting beam are the most main parts of the whole device supporting frame, and are all made of 6061 aluminum alloy materials, and bear important parts such as a clamp platform, a light source, a micro-imaging part, a control circuit, a measured object access channel, a moving mechanism, a light source control operation and the like, wherein the left side plate and the right side plate are provided with square holes and round holes of different specifications, so that the device is not only used for reducing the weight of the device, but also can be conveniently installed and wired in the device assembling process. The interior space part of the front panel is provided with customized hinged connection cabin doors 4-7 which can be opened outwards at 90 degrees, so that the clamp for the measured object can conveniently get in and out. The back panel is an aluminum alloy T2 thin plate, and is provided with an interface connector for motion control and light source control, a USB power socket, a DC power socket and the like. The rear of the frame is provided with two cable racks for bundling the various cables in the device.
As shown in fig. 4 and 5, the adjusting platform of the present invention comprises a platform chassis 5, an X/Y sliding table 6, a Z-axis adjusting assembly, a limiting assembly and a clamp tray 7; a Z-axis adjusting assembly is fixed on one side of the platform chassis 5, the X/Y-axis sliding table 6 is fixed on the platform chassis 5, and the clamp tray 7 is fixed on the upper surface of the X/Y-axis sliding table 6. The utility model discloses a 6 slip tables of X Y axle are conventional subassembly, are the removal that drives the slip table and realize X Y axle direction through the screw in the middle of the motor drive slip table, because prior art is very ripe, do not explain further here.
The Z-axis adjusting component of the utility model comprises a linear guide rail 8, a slide block 9, a screw-nut component and a driving motor 10; the linear guide rail 8 is fixed on the left side plate 4-3 of the supporting frame, the slide block 9 is fixed with the guide rail 8 in a sliding fit manner, and the slide block 9 is fixed on the outer wall of one end of the platform chassis 5; the screw-nut assembly comprises a screw 11, a nut 12 and a fixing piece 13; the nut 12 is fixed on the platform chassis 5, and the screw rod 11 is matched with the nut 12; the upper end of the screw rod 11 is connected with a driving motor 10, and the driving motor 10 is fixed on a fixing piece 13 through a motor supporting seat; the fixing member is fixed to the left side plate 4-3 of the supporting frame.
The utility model discloses a limiting component of an adjusting platform comprises a limiting switch and a limiting block; the limiting assemblies are three groups, namely an X-axis limiting assembly, a Y-axis limiting assembly and a Z-axis limiting assembly which are respectively adjusted corresponding to an X, Y, Z shaft in the limiting adjustment platform, the limiting plates arranged at corresponding positions touch the contacts of the small limiting switches, and the motors of the corresponding shafts are disconnected through the motion control circuit. A right limit block 14 in the X-axis limit assembly is fixed on the side wall of the platform chassis 5, and an X-axis right limit switch 15 is fixed at the bottom of one end, close to the right limit block 14, of the X-axis sliding table and is matched with the X-axis right limit switch for limiting; a near-end limit block 16 in the Y-axis limit assembly is fixed on the side wall of the X-axis sliding table, and a Y-axis near-end limit switch 17 is fixed at the bottom of one end, close to the Y-axis near-end limit block 16, of the fixture tray 7 and is matched with the Y-axis near-end limit switch for limiting; an upper end limiting block 18 in the Z-axis limiting assembly is fixed on the inner wall of a left side plate 4-3 of the supporting frame beside the linear guide rail 8, and a Z-axis upper end limiting switch 19 is fixed on the end side wall, close to the Z-axis upper end limiting block 18, of the platform chassis 5 and is matched with the Z-axis upper end limiting switch for limiting.
The utility model discloses a linear guide, slider, limit switch and stopper are a pair of, have only explained wherein a set of installation cooperation relation in the description, and concrete quantity setting, position and installation cooperation relation are seen out to the accessible attached drawing.
The utility model discloses adjustment platform's motion as follows:
z-axis motion: the driving motor 10 drives the screw rod to rotate to drive the screw rod nut 12 fixed on the platform chassis 5 to move up and down, and the sliding block on the platform chassis is matched with the linear guide rail to realize the vertical motion of the platform assembly. The range of motion in the Z-axis is 20 mm.
X-axis motion: the lower X-axis lead screw of a small lead screw sliding table 20 arranged on the platform chassis 5 is connected with an X-axis driving motor 22 through a coupler 21, and the forward and reverse movement of the motor drives the X-axis platform to move left and right. Limited by the size of the small screw sliding table 20, the movement range of the X axial direction is 20 mm.
Y-axis motion: the upper Y-axis lead screw of the small lead screw sliding table 20 arranged on the platform chassis 5 is connected with a Y-axis driving motor 24 through a coupler 23, and the forward and reverse movement of the motor drives the Y-axis platform to move back and forth. The motion range of the Y-axis is 20mm limited by the size of the small screw sliding table 20.
As shown in fig. 6 and 7, the annular illumination light source assembly of the present invention includes an annular light source 25, a light source supporting plate 26, a light source assembly driving motor 27, an optical axis assembly, a screw assembly 28 and a limiting assembly; the annular light source 25 is fixed to a lower surface of one end of the light source supporting plate 26. The optical axis assembly comprises an optical axis 29 and a linear bearing 30, the linear bearing 30 being slidable on the optical axis 29. The screw rod assembly comprises a screw rod and a screw rod flange; the linear bearing and the lead screw flange are fixed on the upper surface of the other end of the supporting plate, and the optical axis and the lead screw are respectively installed with the linear bearing and the lead screw flange in a matched mode; the upper end of the optical axis 29 passes through and is relatively fixed on the front supporting beam 4-8, the lower end passes through and is relatively fixed on the light source supporting plate 31, and the light source supporting plate 31 is fixed on the right side plate 4-4 of the supporting frame; the upper end of the screw rod penetrates through the front supporting beam 4-8 and is connected with a light source component driving motor 27 fixed on the front supporting beam 4-8; the lower end of the screw rod penetrates out of the light source supporting plate 31. The limiting assembly comprises a pair of limiting switches and limiting blocks; the upper limit switch 32 is fixed on the side wall of the light source supporting plate 26 far away from the annular light source 25; the upper end limit block 33 is fixed on the right side plate 4-4 of the supporting frame, is matched with the upper end and is limited by the limit switch 32. The reference numerals of the lower end limit switch and the lower end limit block are not shown in the figure, but the position and the installation matching relationship can be directly obtained according to the figure.
The utility model discloses an annular light source is the cyclic annular thing of a plurality of LED lamps of inner wall embedding, through motor drive and lead screw flange cooperation, drives reciprocating of light source backup pad, annular light source. The optical axis assembly arranged between the front supporting beam and the optical axis fixing plate ensures the stability of the up-and-down motion of the light source assembly. The range of the up-and-down motion of the whole light source assembly is 20mm, and the motion range of the light source assembly is limited by the limit switch baffle plates arranged on the limit switch arranged on the light source supporting plate and the right side plate.
As shown in fig. 8 and 9, the microscopic imaging assembly of the present invention includes a zoom lens assembly 35, an industrial camera 36, a zoom driving assembly and a reflecting prism assembly; the bottom of the zoom lens component 35 is connected with an industrial camera 36, and the front end of the zoom lens is fixed on the rear supporting beam 4-9 through a front lens supporting frame 37 and a rear lens supporting frame 38 which are sleeved in; the zooming driving component comprises a zooming driving motor 39 and a zooming driving wheel 40, and the zooming driving motor 39 is fixed at the lower part of the front lens supporting frame 37 through a supporting seat; the zoom driving wheel 40 is fixed to one end of a motor driving shaft 41. The reflecting prism assembly comprises a visual light path reflecting prism 42 and a reflecting prism support frame 43, the reflecting prism support frame 43 is fixed on the front supporting beam 4-8 of the supporting frame, and the visual light path reflecting prism 42 is fixed in the reflecting prism support frame 43.
The utility model discloses a microscopic imaging subassembly is through fixing anterior supporting beam, rear portion supporting beam between left and right side board and installing support frame before the camera lens and camera lens back support frame respectively, all is furnished with tight set bolt in preceding, the back support frame to fixed zoom lens subassembly and the industry camera that links to each other with it. The visual light path reflecting prism is fixed through the front supporting beam 4-8, the reflecting prism supporting frame 43 and the fixed blocking piece, a horizontal light path of the lens assembly is converted into a downward vertical light path, and the effective visual distance in the horizontal direction is reduced. The lower end of the front lens supporting frame is provided with a zooming driving motor 39 and a zooming driving wheel 40, and the zooming of the lens is adjusted by driving the motor to rotate forward and backward through a motor control circuit by means of friction between a silica gel ring at the outer edge of the zooming driving wheel 40 and a zooming ring in the lens assembly.
In the concrete implementation of the utility model, the device also comprises a control component, which comprises a motion control circuit board arranged on the left side plate and a light source control circuit board arranged on the right side plate; a power switch 44, a membrane key 45 and a motion indication panel 46 mounted on the front panel; a light source brightness LED display module 47 and a light source control switch module 48 mounted on the front panel; a motion control RS-232 interface 49 and a light source control RS-232 interface 50 mounted on the back panel, a USB interface 51 of the industrial camera 36 and a 24VDC power outlet interface 52.
As shown in fig. 10, the motion control circuit board of the present invention is a set of specially designed 5-way PWM (pulse width modulation) control circuit, and adjusts the maximum output power by adjusting the duty ratio of the output pulse, and the output of each way realizes the positive and negative conversion output through the independent control switches K1 and K2, and simultaneously drives the forward and reverse rotation LED L1 and L2 to light up for display. The 5-path forward and reverse rotation switch adopts a film panel switch, is packaged in a film panel with the thickness of about 0.5mm together with the 5-path forward and reverse rotation display film LEDs, and is connected with the control circuit board through a PCB line row. The circuit board is specially designed with 5 paths of forward and reverse limit circuits corresponding to 5 paths of PWM output, when the limit block in the device triggers the limit switch to conduct the circuit (no matter the shaft is limited in forward or reverse direction), the circuit immediately cuts off the output of the path of PWM and stops the operation of the motor. The maximum PWM output voltage can be set according to the type of a motor used by the overall voltage setting and the overall current setting in the circuit, the maximum output voltage of an N20 gear speed reducing motor adopted by an X/Y/Z shaft and annular light source driving in the device is 12V, and the maximum (locked rotor) current is 400 mA; the maximum output voltage of an N20 gear reduction motor adopted by the zoom lens for zoom driving is 3V, and the maximum (locked rotor) current is 100mA, so that the locked rotor of the motor is realized after the zoom ring reaches the zoom position. The 4-bit LED digital display module is arranged in the circuit board, the set parameters such as the number of paths, the maximum voltage, the maximum current and the like can be displayed in the parameter setting process, and the display of the display module can be turned on or off through an S1 switch on the board after the setting is finished. The motion control panel is also provided with a control circuit based on a Modbus protocol, and software control can be realized through programming of the upper computer.
As shown in fig. 11, the utility model discloses a light source control panel is one set of single-way PWM (pulse width modulation) control circuit of special design, adjusts the maximum power of output through adjusting the duty cycle of output pulse, and control circuit comprises drive plate, control panel and the three daughter board of display panel, adopts dupont line bank to connect between the daughter board, can separately install the daughter board according to the needs of other application scenario in a flexible way. The circuit can set the maximum output voltage and the maximum output current according to different load types, and adjust the maximum output power, and the specific method comprises the following steps: the S2 switch on the control panel is pressed to enter the maximum output voltage setting state, the encoder switch S1 on the rotary control panel adjusts the maximum output voltage to the required value, and then the S2 switch is pressed to save the setting. Similarly, pressing the S3 switch on the control board sets the maximum output current in the same manner. And when an S4 switch on the control board is pressed, the nixie tube of the LED display board alternately displays the current working voltage and the current working current. The output of PWM can be turned on or off by pressing an encoder switch S1 on the control panel, and the encoder switch S1 is rotated left and right to adjust the PWM output from 0% to 100% of the set maximum output power and display the PWM output on an LED digital display module of the LED display panel. The motion control panel is also provided with a control circuit based on a Modbus protocol, and software control can be realized through programming of the upper computer.
The utility model discloses switch 44 on the front panel is used for the circular telegram and the outage of motion control subassembly and annular light source subassembly, and film button 45 is five pairs, is used for respectively right the utility model provides a five driving motor carry out just, reversal command control. The light source brightness LED display module 47 can display the brightness of the ring light source. The light source control switch 48 is a coded switch assembly matched with the annular light source control panel, the annular light source can be turned on or off by pressing the knob switch 48, and the brightness of the light source can be increased or decreased by selecting the switch clockwise or anticlockwise. The motion control RS-232 interface 49, the light source control RS-232 interface 50 and the USB interface 51 of the industrial camera 36 on the rear panel are all used for connecting an externally arranged computer, and a series of operations such as motion control, light source control, collection and processing of the shell evidence characteristic image and the like are realized through special software; the 24VDC power outlet interface 52 is used to connect to an external dc power adapter. Specifically, an electrical connection relationship diagram of the control circuit board, each driving motor, the limit switch and the control panel mounted on the front panel is shown in fig. 10, and an electrical connection relationship diagram of the light source brightness LED display module and the light source control switch module on the front panel and the power supply driving board on the rear panel is shown in fig. 11.
The utility model discloses the magnification of the little camera lens of zooming of the micro-imaging system among the device is 0.53x-3.38x, rated object distance 113mm, and imaging light path has adopted twice 90 dioptric prism in order to reduce actual object distance length. The industrial vision camera uses a 300-ten-thousand-pixel CMOS sensor product, 1/2 "target size, 2048 x 1536 pixel size, USB 2.0 data interface. The motion control and light source system adopts 24VDC power supply, the X/Y/X axis movement, the up-down movement of the lighting source and the electric zooming of the microscope lens are realized by a set of specially designed singlechip 5-axis motor motion control system, and the control of the light source brightness and the switch is realized by a control circuit.
When the device is used, the material evidence clamp is fixed on the clamp tray, and then the material evidence is fixed on the clamp. Adjusting the X/Y/Z direction of the material evidence by adjusting the platform to find a proper imaging position; adjusting the magnification of the zoom lens by adjusting a zoom driving motor to obtain the required size of the field of view; clear trace characteristics are obtained by adjusting the upper position and the lower position of the annular illuminating light source component; the material evidence trace definition is obtained by adjusting the brightness of a light source on the panel; imaging and photographing are carried out through background software of the microscopic imaging assembly, and trace measurement, marking, acquisition and other work are completed.
Although specific embodiments of the present invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications can be made to the above embodiments in accordance with the present invention, and the functional effects thereof without departing from the spirit of the present invention are also within the scope of the present invention.
Claims (8)
1. Cartridge case material evidence characteristic image acquisition measuring device, its characterized in that includes:
adjusting the platform to realize the relative displacement of the shell material evidence in the X/Y/Z direction;
the annular illuminating light source component illuminates the shell physical evidence;
the microscopic imaging assembly is used for carrying out zoom imaging and photographing on the shell physical evidence;
and the supporting frame is used for supporting and fixing the adjusting platform, the annular illuminating light source and the microscopic imaging assembly.
2. The device for acquiring and measuring evidence characteristic images of a cartridge case according to claim 1, wherein the adjusting platform comprises a platform chassis, an X/Y-axis sliding table, a Z-axis adjusting assembly, a limiting assembly and a clamp tray;
the X/Y-axis sliding table is fixed on the platform chassis, and the clamp tray is fixed on the upper surface of the X/Y-axis sliding table.
3. The device for acquiring and measuring evidence characteristics of a cartridge case according to claim 1, wherein the annular illumination light source assembly comprises an annular light source, a light source supporting plate, a light source assembly driving motor, an optical axis assembly, a lead screw assembly and a limiting assembly;
the annular light source is fixed on the lower surface of one end of the light source supporting plate;
the optical axis assembly comprises an optical axis and a linear bearing, and the lead screw assembly comprises a lead screw and a lead screw flange; the linear bearing and the lead screw flange are fixed on the upper surface of the other end of the supporting plate, and the optical axis and the lead screw are respectively installed with the linear bearing and the lead screw flange in a matched manner;
the upper end of the optical axis penetrates through and is relatively fixed on the supporting frame, the lower end of the optical axis penetrates through and is relatively fixed on the light source supporting plate, and the light source supporting plate is fixed on the supporting frame;
the upper end of the screw rod penetrates through the supporting frame and is connected with a light source component driving motor fixed on the supporting frame; the lower end of the screw rod penetrates out of the light source supporting plate;
the limiting assembly comprises a limiting switch and a limiting block; the limit switch is fixed on the side wall of one end of the light source supporting plate, which is far away from the annular light source; the limiting block is fixed on the supporting frame and is matched with the limiting switch for limiting.
4. The image acquisition and measurement device for the evidence features of the cartridge case according to claim 1, wherein the microscopic imaging assembly comprises a zoom lens assembly, an industrial camera, a zoom driving assembly and a reflecting prism assembly;
the bottom of the zoom lens component is connected with an industrial camera, and the front end of the zoom lens is fixed on the supporting frame through the sleeved front and rear supporting frames of the lens; the zoom lens is fixed in the front and rear support frames of the lens by 4 fastening bolts respectively;
the zoom driving assembly comprises a zoom driving motor and a zoom driving wheel, and the zoom driving motor is fixed at the lower part of the front supporting frame of the lens through a supporting seat; the zoom driving wheel is fixed at one end of the driving shaft, and the other end of the driving shaft is connected with the zoom driving motor;
the reflecting prism assembly comprises a visual light path reflecting prism and a reflecting prism support frame, the reflecting prism support frame is fixed on the support frame, and the visual light path reflecting prism is fixed in the reflecting prism support frame.
5. The device for acquiring and measuring physical evidence characteristic images of a cartridge case according to claim 1, wherein the supporting frame is formed by assembling a front panel, a rear panel, a left side plate, a right side plate and a base, cable frames are arranged on the rear panel and between the left side plate and the right side plate, and a cabin door is arranged on the front panel; and the upper part between the left side plate and the right side plate is also fixed with a front supporting beam and a rear supporting beam.
6. The device for acquiring and measuring the physical evidence characteristic image of the cartridge case according to claim 2, wherein the Z-axis adjusting assembly comprises a linear guide rail, a slide block, a screw nut assembly and a driving motor;
the linear guide rail is fixed on the support frame, the sliding block is fixed with the guide rail in a sliding fit manner, and the sliding block is fixed on the outer wall of one end of the platform chassis;
the screw rod nut component comprises a screw rod, a nut and a fixing piece; the nut is fixed on the platform chassis, and the screw rod and the nut are installed in a matched mode; the upper end of the screw rod is connected with a driving motor, and the driving motor is fixed on the fixing piece through a motor supporting seat; the fixing piece is fixed on the supporting frame.
7. The device for acquiring and measuring evidence characteristics of a cartridge case according to claim 2, wherein the limit component comprises a limit switch and a limit block;
the three limiting assemblies are respectively an X-axis limiting assembly, a Y-axis limiting assembly and a Z-axis limiting assembly and respectively correspond to the limiting of the adjusting platform in X, Y, Z three-dimensional space movement;
the left and right limiting blocks in the X-axis limiting assembly are fixed on the side wall of the platform chassis, and the left and right limiting switches are mounted at the bottom of an X-axis sliding block on the X/Y sliding table and are matched with the X-axis limiting switches for limiting;
the front limiting block and the rear limiting block in the Y-axis limiting assembly are fixed on the side wall of an X-axis sliding block of the X/Y-axis sliding table, and a Y-axis limiting switch is fixed at the bottom of one end, close to the Y-axis limiting block, of the fixture tray and is matched with the Y-axis limiting switch for limiting;
and an upper limiting block in the Z-axis limiting assembly is fixed on the inner wall of the supporting frame beside the linear guide rail, a lower limiting block is a base upper plane of the device, and Z-axis limiting switches are fixed on the front side and the rear side of the platform chassis, close to the third limiting block, and are matched with the Z-axis limiting switches for limiting.
8. The image acquisition and measurement device for evidence features of cartridge cases of any one of claims 1 to 7, further comprising a control assembly, wherein the control assembly comprises a motion control circuit board installed on the left side board, a light source control circuit board installed on the right side board, a power switch, a membrane key and a motion indication panel installed on the front panel, a light source brightness LED display module and a light source control switch module installed on the front panel, a motion control and light source control RS-232 interface installed on the rear panel, a USB interface of an industrial camera and a 24VDC power socket interface.
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| CN201920851338.6U CN210533999U (en) | 2019-06-06 | 2019-06-06 | Cartridge case material evidence characteristic image acquisition measuring device |
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| CN201920851338.6U CN210533999U (en) | 2019-06-06 | 2019-06-06 | Cartridge case material evidence characteristic image acquisition measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146504A (en) * | 2019-06-06 | 2019-08-20 | 安徽金盾三维高科技有限公司 | Shell case material evidence characteristic image acquires measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110146504A (en) * | 2019-06-06 | 2019-08-20 | 安徽金盾三维高科技有限公司 | Shell case material evidence characteristic image acquires measuring device |
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