Physical evidence collecting device for public security investigation

Abstract

The physical evidence collecting device for public security investigation comprises an upper box cover and a lower box body, and the upper end of the upper box cover comprises a measurement evidence obtaining assembly; the measurement evidence obtaining assembly comprises a placement groove, a first ruler and a second ruler, the placement groove is located in the upper end of the upper box cover, one end of the first ruler is connected with the first sliding groove, one end of the second ruler is connected with the second sliding groove, and the first ruler and the second ruler are perpendicular to each other to form a plane measurement system; collected material evidences are placed in the containing groove, meanwhile, the first ruler and the second ruler are driven to move and be positioned in the containing groove, scale marks on the first ruler and the second ruler serve as measuring references, the size of the material evidences is accurately measured, and meanwhile the material evidences can be conveniently matched with a camera to take pictures on site for evidence obtaining; through the multifunctional design, the investigation efficiency and the accuracy of material evidence information processing are improved, and high quality and high safety in the processing process are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of physical evidence collection, and in particular to a physical evidence collection device for public security investigation. Background Art

[0002] In the fields of forensic identification, criminal investigation, forensic pathology, etc., the collection, preservation and management of physical evidence is a key link to ensure the fair handling of cases. Physical evidence, such as fingerprints, DNA samples, trace evidence, etc., often need to be collected and preserved in a strictly controlled environment to prevent contamination, damage or tampering. However, the existing physical evidence collection system has some significant deficiencies, which seriously affect the integrity and reliability of physical evidence.

[0003] First, traditional evidence collection devices usually lack sufficient sealing and are easily affected by the external environment, such as dust, moisture, microorganisms, etc., which may have an adverse effect on the preservation of physical evidence. Secondly, existing storage devices are often not user-friendly in design and are complicated to operate, which is not conducive to the rapid and accurate collection of physical evidence on site. In the process of evidence collection, various complex environments often occur, such as the lack of a stable evidence collection platform and the dark environment, which makes it extremely inconvenient to collect physical evidence and easily causes the collection of physical evidence information to be inaccurate, affecting the subsequent investigation of the case.

[0004] Therefore, the market is in urgent need of a new type of physical evidence storage device that can provide higher sealing, more convenient operation procedures and functions that can adapt to various complex environments. Summary of the invention

[0005] The present invention aims to solve the above-mentioned problem by providing a physical evidence collection device for public security investigation to ensure the integrity and reliability of physical evidence during the collection, storage and transportation process.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a physical evidence collection device for public security investigation, comprising an upper box cover and a lower box body, wherein the upper end of the upper box cover comprises a measurement and evidence collection component;

[0007] The measuring and evidence collection component includes a placement slot, a first ruler and a second ruler. The placement slot is located inside the upper end of the upper box cover. The adjacent sides of the placement slot are respectively provided with a first sliding slot and a second sliding slot. One end of the first ruler is connected to the first sliding slot, and one end of the second ruler is connected to the second sliding slot. The first ruler and the second ruler are perpendicular to each other and are offset from each other to form a set of plane measurement systems. By placing the collected evidence inside the placement slot and driving the first ruler and the second ruler to move and position in the placement slot, the intersection of the first ruler and the second ruler is brought close to the evidence, and the scale marks on the first ruler and the second ruler are used as measurement references to accurately measure the size of the evidence, and facilitate on-site photo taking and evidence collection with a camera.

[0008] Preferably, a driving assembly is respectively provided inside the first sliding groove and the second sliding groove, and the driving assembly includes a threaded rod and a driving block. The driving block and the threaded rod are respectively located inside the first sliding groove and the second sliding groove, and the driving block is respectively connected to the first ruler and the second ruler. A threaded hole is provided on the wall of the driving block, and the driving block is meshed with the threaded rod through the threaded hole. By controlling the control assembly provided at one corner of the upper box cover, the threaded rods on the adjacent sides are synchronously driven to rotate at the same time, thereby driving the driving block to move.

[0009] Preferably, the control component includes a control knob, a first bevel gear and a second bevel gear, the first bevel gears are respectively located at one end of the threaded rods on both sides that are close to each other, the upper box cover wall is provided with a control knob, the second bevel gear is connected to the lower end of the control knob, and the second bevel gear is meshed with the first bevel gears on both sides of the lower end respectively, by rotating the control knob, thereby driving the second bevel gear to rotate, and the second bevel gear will synchronously drive the first bevel gears on the two adjacent sides to rotate.

[0010] Preferably, the pitches of the threaded rods on two adjacent sides are set according to the lengths of the threaded rods to achieve synchronization of the movement of the first ruler and the second ruler.

[0011] Preferably, a lighting element is provided on one side wall of the placement slot, and the lighting element includes a rotating plate, a rotating knob and a plurality of adjustable light groups. The rotating plate is located on the inner wall of the front end of the placement slot, and both ends of the rotating plate are rotatably connected to the wall of the placement slot through a rotating shaft. A plurality of adjustable light groups are evenly installed on the lower end wall of the rotating plate, and a rotating knob is provided at one end of the rotating shaft on one side, and the upper half of the rotating knob is exposed from the wall of the upper box cover. The rotating plate is controlled to rotate by rubbing the rotating knob, thereby adjusting the illumination angle of the adjustable light group on the rotating plate.

[0012] Preferably, the lighting element further comprises a plurality of auxiliary light groups, which are respectively located on the walls of the remaining three sides, and provide parallel projected light for the physical evidence through the auxiliary light groups.

[0013] Preferably, a weighing platform is provided in the placement slot, and the weight of the evidence is measured by the weighing platform, and the weight value is displayed by a display screen provided on the upper end wall of the upper box cover.

[0014] Preferably, a plurality of storage rooms are provided inside the lower box body, through which the collected physical evidence is classified and stored, and at the same time, the temperature inside the lower box body is monitored by a temperature sensor provided inside and displayed on the display screen.

[0015] Preferably, a support assembly is provided at the lower end of the lower box body, and the support assembly includes two groups of support frames. A groove is provided on the wall surface of the lower end of the lower box body, and the support frames are symmetrically located inside the groove, and the two sides of the support frames are rotatably connected to the inner wall of the groove. The walls on both sides of the groove are respectively provided with an inclination angle, and the support frames expand outward after being unfolded, thereby ensuring the stability of the support frames.

[0016] Preferably, a cover plate is provided at the upper end of the placement groove, and the cover plate is slidably connected to the slide rails provided on both sides of the upper wall of the upper box cover, thereby achieving sealing protection for the interior of the placement groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, by using two vertically crossed rulers in combination with a sliding slot and a driving mechanism, the position of the ruler can be accurately controlled and used as a datum for measuring the size of physical evidence, thereby facilitating information collection of physical evidence at the evidence collection site, significantly improving the efficiency and accuracy of physical evidence collection, and providing convenient support for criminal investigation.

[0019] 2. The present invention has an integrated design, integrating weight measurement, dimension measurement and lighting systems, making the operation process simple and fast, greatly improving on-site work efficiency.

[0020] 3. In the present invention, the lighting elements provided include a main light group and an auxiliary light group, which can be adjusted according to the on-site environment to produce the best lighting effect, ensuring the clarity and detail display of the photos of physical evidence, which is particularly critical for the analysis of physical evidence in complex cases and helps to reveal the truth of the case.

[0021] 4. In the present invention, the classified storage design inside the lower box body helps to maintain the orderly management and safe storage of physical evidence collected on site. At the same time, a support assembly is set at the lower end of the lower box body. The adjustable height and stability of the support frame enable the device to adapt to different working environments, ensuring that the equipment can work stably in various environments.

[0022] 5. The portable design of the present invention makes it easy to carry and deploy, while the sealed protection design of the internal components ensures the safety of evidence and equipment and prevents contamination and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0024] In the attached picture:

[0025] Figure 1 It is a schematic diagram of the overall structure of the physical evidence collection device of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall internal structure of the physical evidence collection device of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the measurement and evidence collection component of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure inside the upper box cover of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the control component of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of two sets of rulers of the present invention;

[0031] Figure 7 is a schematic diagram of the structure of the lighting element of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the support assembly of the present invention;

[0033] Numbers in the figure: 1, upper box cover; 101, weighing platform; 102, display screen; 103, cover plate; 104, slide rail; 2, lower box body; 201, storage room; 202, groove; 301, placement slot; 302, first ruler; 303, second ruler; 304, first sliding slot; 305, second sliding slot; 306, threaded rod; 307, drive block; 308, threaded hole; 401, control knob; 402, first bevel gear; 403, second bevel gear; 501, rotating plate; 502, rotating knob; 503, adjustable light group; 504, rotating shaft; 505, auxiliary light group; 601, support frame; 602, inclination angle. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] Example: Figure 1 and Figure 2 As shown, a physical evidence collection device for public security investigation includes an upper box cover 1 and a lower box body 2, wherein the upper end of the upper box cover 1 includes a measurement and evidence collection component; a plurality of storage rooms 201 are arranged inside the lower box body 2, after the physical evidence information is collected, the collected physical evidence can be classified and stored through the storage rooms 201, and at the same time, the temperature inside the lower box body 2 is monitored by a temperature sensor arranged inside, and displayed on the display screen 102, and the built-in temperature sensor can monitor the storage environment temperature in real time, which is particularly important for certain sensitive physical evidence, such as biological samples and chemical substances, to ensure that they are stored under appropriate conditions.

[0036] like Figure 3-Figure 6As shown, the measurement and evidence collection component includes a placement slot 301, a first ruler 302 and a second ruler 303. The placement slot 301 is located inside the upper end of the upper box cover 1. The adjacent sides of the placement slot 301 are respectively provided with a first sliding slot 304 and a second sliding slot 305. One end of the first ruler 302 is connected to the first sliding slot 304, and one end of the second ruler 303 is connected to the second sliding slot 305. The first ruler 302 and the second ruler 303 are perpendicular to each other and are offset from each other to form a set of plane measurement systems. A weighing platform 101 is provided in the placement slot 301. The weight of the physical evidence is measured by the weighing platform 101. At the same time, the weight of the physical evidence is measured by the display screen 102 provided on the upper end wall of the upper box cover 1 The weight value is displayed by placing the collected evidence in the placement slot 301. The first sliding slot 304 and the second sliding slot 305 are respectively provided with a driving assembly, and the driving assembly includes a threaded rod 306 and a driving block 307. The driving block 307 and the threaded rod 306 are respectively located in the first sliding slot 304 and the second sliding slot 305. The pitch of the threaded rod 306 on the two adjacent sides is set according to the length of the threaded rod 306 to achieve the synchronization of the movement of the first ruler 302 and the second ruler 303. The driving block 307 is respectively connected to the first ruler 302 and the second ruler 303. The wall surface of the driving block 307 is provided with a threaded hole 308. The driving block 307 is connected to the first ruler 302 and the second ruler 303. The threaded hole 308 is meshed with the threaded rod 306, and a control component is provided at a corner of the control upper box cover 1, the control component includes a control knob 401, a first bevel gear 402 and a second bevel gear 403, the first bevel gear 402 is respectively located at one end of the threaded rod 306 on both sides close to each other, the wall of the upper box cover 1 is provided with a control knob 401, the second bevel gear 403 is connected to the lower end of the control knob 401, and the second bevel gear 403 is meshed with the first bevel gear 402 on both sides of the lower end, and the control knob 401 is rotated to drive the second bevel gear 403 to rotate, and the second bevel gear 403 will synchronously drive the first bevel gears 402 on the two adjacent sides. 02 rotates, thereby synchronously driving the threaded rod 306 on the adjacent side to rotate at the same time, thereby driving the driving block 307 to move, and by driving the first ruler 302 and the second ruler 303 to move and position in the placement groove 301, the intersection of the first ruler 302 and the second ruler 303 is brought close to the physical evidence, and the scale marks on the first ruler 302 and the second ruler 303 are used as measurement references to measure the size of the physical evidence more accurately, and at the same time, it is convenient to cooperate with the camera to take photos on the spot to collect evidence. A cover plate 103 is provided at the upper end of the placement groove 301, and the cover plate 103 is slidably connected to the slide rails 104 provided on both sides of the upper wall of the upper box cover 1, thereby realizing the sealing protection of the internal components of the placement groove 301.

[0037] Among them, Figure 7 As shown, a lighting element is provided on one side wall of the placement slot 301, and the lighting element includes a rotating plate 501, a rotating knob 502 and a plurality of adjustable light groups 503. The rotating plate 501 is located on the inner wall of the front end of the placement slot 301, and the two ends of the rotating plate 501 are rotatably connected to the wall of the placement slot 301 through a rotating shaft 504, and a plurality of adjustable light groups 503 are evenly installed on the lower end wall of the rotating plate 501, and a rotating knob 502 is provided at one end of the rotating shaft 504 on one side, and the upper half of the rotating knob 502 is exposed to the wall of the upper box cover 1, and the rotating plate 501 is controlled to rotate by rubbing the rotating knob 502, thereby adjusting the The illumination angle of the adjustable light group 503 on the rotating plate 501, the lighting element also includes a plurality of auxiliary light groups 505, the auxiliary light groups 505 are respectively located on the walls of the remaining three sides, and the auxiliary light groups 505 provide parallel projection light for the physical evidence; through the adjustable light group 503 and the auxiliary light group 505, it can be ensured that the objects are evenly illuminated from all angles to avoid interference from reflections or shadows and ensure image quality, which helps to capture the tiny details of the physical evidence and possible trace evidence (such as fibers, fingerprints, scratches, etc.) to ensure that nothing is missed during evidence analysis; ensuring the clarity and detail display of the photos of the physical evidence, which is particularly critical for the analysis of physical evidence in complex cases and helps to reveal the truth of the case.

[0038] Among them, Figure 8 As shown, a support assembly is provided at the lower end of the lower box 2, and the support assembly includes two groups of support frames 601. A groove 202 is provided on the wall surface of the lower end of the lower box 2. The support frames 601 are symmetrically located inside the groove 202, and the two sides of the support frames 601 are rotatably connected to the inner wall of the groove 202. The two side walls of the groove 202 are respectively provided with an inclination angle 602. After the support frames 601 are unfolded, they expand outwards to ensure the stability of the support frames 601. Through the adjustable height and stability characteristics of the support frames 601, the design of the support frames 601 allows the user to adjust the angle and height of the support frames 601 according to the specific conditions of the work site, such as uneven ground or slope. This flexibility ensures that the equipment can remain stable even on complex or irregular terrain, thereby ensuring the accuracy and safety of operation.

[0039] The specific usage process includes the following:

[0040] 1) Equipment preparation: First, pull the support frame 601 at the lower end of the lower box 2 out of the groove 202 and place it in a suitable position to ensure the stability of the device, and then prepare to collect and classify physical evidence information.

[0041] 2) Placement and positioning of physical evidence:

[0042] The user places the physical evidence on the weighing platform 101 in the placement slot 301, and rotates the rotary knob 502 to control the adjustable light group 503 on the rotating plate 501 and the auxiliary light groups 505 around it to ensure that the physical evidence is evenly and clearly illuminated.

[0043] 3) Collection of physical evidence information:

[0044] First, the weight of the physical evidence is measured; the weight value is displayed on the display screen 102; according to the size of the physical evidence, by turning the control knob 401 at a corner of the upper box cover 1, the second bevel gear 403 is driven to mesh with the first bevel gears 402 on both sides. The bevel gear drives the threaded rods 306 on both adjacent sides to rotate simultaneously, realizing the synchronous movement of the first straight ruler 302 and the second straight ruler 303. The driving block 307 meshes with the threaded rod 306 through the threaded hole 308, and moves the first straight ruler 302 and the second straight ruler 303 to the appropriate position so that their intersection is close to the physical evidence. Based on the scale marks on the first straight ruler 302 and the second straight ruler 303 as the measurement reference, the length and width of the physical evidence are accurately measured.

[0045] 4) Take photos for evidence:

[0046] After the size measurement, use the set lighting conditions to take photos of the physical evidence and record the visual information of the physical evidence for subsequent analysis and recording.

[0047] 5) Classification and storage of physical evidence:

[0048] After the evidence information is collected, the evidence is classified and stored in the storage rooms 201 of the lower box 2 according to different categories. At the same time, the internal temperature sensor is used to monitor the internal environment temperature of the lower box 2, and the temperature data is displayed on the display screen 102 to ensure the stability of the evidence storage environment.

[0049] 6) Closing and sealing:

[0050] After all the testing and recording work is completed, the upper box cover 1 is closed and sealed to protect the internal components and collected evidence, and at the same time, the slide rail 104 structure is used to achieve sealing protection for the internal components of the placement slot 301.

[0051] 7) Data collation and submission:

[0052] The collected data and pictures are collated and compiled into relevant reports for use in subsequent legal proceedings and case investigations.

[0053] The above series of steps constitute the complete operating process of the equipment, ensuring the effective and systematic collection and recording of physical evidence, ensuring the effective collection, accurate measurement and safe storage of physical evidence, and greatly improving the efficiency of on-site investigation and the quality of evidence preservation.

[0054] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A physical evidence collection device for public security investigation, characterized in that: It includes an upper box cover and a lower box body, wherein the upper end of the upper box cover includes a measurement and evidence collection component; The measuring and evidence collection component includes a placement slot, a first ruler and a second ruler. The placement slot is located inside the upper end of the upper box cover. The adjacent sides of the placement slot are respectively provided with a first sliding slot and a second sliding slot. One end of the first ruler is connected to the first sliding slot, and one end of the second ruler is connected to the second sliding slot. The first ruler and the second ruler are perpendicular to each other and are offset from each other to form a set of plane measurement systems. By placing the collected evidence inside the placement slot and driving the first ruler and the second ruler to move and position in the placement slot, the intersection of the first ruler and the second ruler is brought close to the evidence, and the scale marks on the first ruler and the second ruler are used as measurement references to accurately measure the size of the evidence, and facilitate on-site photo taking and evidence collection with a camera.

2. The physical evidence collection device for public security investigation according to claim 1, characterized in that: A driving assembly is respectively provided inside the first sliding groove and the second sliding groove, and the driving assembly includes a threaded rod and a driving block. The driving block and the threaded rod are respectively located inside the first sliding groove and the second sliding groove, and the driving block is respectively connected to the first ruler and the second ruler. A threaded hole is provided on the wall of the driving block, and the driving block is meshed with the threaded rod through the threaded hole. By controlling the control assembly provided at one corner of the upper box cover, the threaded rods on the adjacent sides are synchronously driven to rotate at the same time, thereby driving the driving block to move.

3. The physical evidence collection device for public security investigation according to claim 2, characterized in that: The control assembly includes a control knob, a first bevel gear and a second bevel gear. The first bevel gears are respectively located at one end of the threaded rods on both sides that are close to each other. A control knob is provided on the wall of the upper box cover. The second bevel gear is connected to the lower end of the control knob, and the second bevel gear is meshed with the first bevel gears on both sides of the lower end. By rotating the control knob, the second bevel gear is driven to rotate, and the second bevel gear will synchronously drive the first bevel gears on the two adjacent sides to rotate.

4. The physical evidence collection device for public security investigation according to claim 3, characterized in that: The pitches of the threaded rods on two adjacent sides are set according to the lengths of the threaded rods to achieve synchronization of the movement of the first ruler and the second ruler.

5. The physical evidence collection device for public security investigation according to claim 1, characterized in that: A lighting element is provided on one side wall of the placement slot, and the lighting element includes a rotating plate, a rotating knob and a plurality of adjustable lamp groups. The rotating plate is located on the inner wall of the front end of the placement slot, and both ends of the rotating plate are rotatably connected to the wall of the placement slot through a rotating shaft. A plurality of adjustable lamp groups are evenly installed on the lower end wall of the rotating plate, and a rotating knob is provided at one end of the rotating shaft on one side, and the upper half of the rotating knob is exposed from the wall of the upper box cover. The rotating plate is controlled to rotate by rubbing the rotating knob, thereby adjusting the illumination angle of the adjustable lamp group on the rotating plate.

6. The physical evidence collection device for public security investigation according to claim 5, characterized in that: The lighting element also includes a plurality of auxiliary light groups, which are respectively located on the wall surfaces of the remaining three sides, and provide parallel projected light for the physical evidence through the auxiliary light groups.

7. The physical evidence collection device for public security investigation according to claim 1, characterized in that: A weighing platform is arranged in the placing groove, and the weight of the evidence is measured by the weighing platform, and the weight value is displayed by a display screen arranged on the upper end wall of the upper box cover.

8. The physical evidence collection device for public security investigation according to claim 7, characterized in that: A plurality of storage rooms are arranged inside the lower box body, through which the collected physical evidence is classified and stored. At the same time, the temperature inside the lower box body is monitored by a temperature sensor arranged inside, and displayed on the display screen.

9. The physical evidence collection device for public security investigation according to claim 1, characterized in that: A support assembly is provided at the lower end of the lower box body, and the support assembly includes two groups of support frames. A groove is provided on the wall surface of the lower end of the lower box body. The support frames are symmetrically located inside the groove, and the two sides of the support frames are rotatably connected to the inner wall of the groove. The walls on both sides of the groove are respectively provided with an inclination angle. After the support frames are unfolded, they expand outward, thereby ensuring the stability of the support frames.

10. The physical evidence collection device for public security investigation according to claim 1, characterized in that: A cover plate is provided at the upper end of the placement groove, and the cover plate is slidably connected to the slide rails provided on both sides of the upper wall surface of the upper box cover, thereby realizing sealing protection for the interior of the placement groove.

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