Portable trace evidence detection equipment

Abstract

This invention provides a portable micro-evidence investigation device, belonging to the technical field of investigation equipment. The portable micro-evidence investigation device includes a main body, with a mounting slot for mounting an electronic device at its upper end. An investigation hole is provided within the mounting slot; and the camera on the electronic device can overlap with the investigation hole. The portable micro-evidence investigation device provided by this invention can cooperate with an electronic device, that is, the camera of the electronic device cooperates with the investigation hole of the main body of the investigation device, enabling imaging of both the electronic device and the main body of the investigation device. This reduces the overall size of the portable micro-evidence investigation device and facilitates investigation in complex environments such as high places, facades, or corners.

Description

Technical Field

[0001] The present invention relates to the technical field of exploration equipment, and in particular to a portable trace evidence exploration device. Background Art

[0002] Physical evidence investigation equipment can bring great help to the detection of criminal cases and is widely used in the investigation of various physical evidence at the crime scene (such as human dandruff, sweat marks, blood, saliva stains, semen stains, etc.).

[0003] Physical evidence investigation equipment is generally equipped with a microscope (not a regular configuration, and only a small part of the equipment is equipped with a lens, and even fewer are equipped with a microscope). When in use, the microscope is fixed (directly or indirectly) to the surface of the object to ensure that the lens of the microscope can form a stable image. The microscope on the existing physical evidence investigation equipment needs to change the fixed position each time after observing the area it can observe. The area that the microscope can observe each time (in millimeters) is small, and the area that needs to be investigated on site (in meters) is large, which is not conducive to carrying and investigating in complex environments such as high places, facades or corners.

[0004] In summary, how to overcome the above-mentioned defects of existing physical evidence investigation equipment is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a portable trace evidence investigation device to solve the technical problem that the evidence investigation equipment in the prior art is large, difficult to carry and difficult to investigate in complex environments such as high places, facades or corners.

[0006] In a first aspect, the present invention provides a portable trace evidence investigation device, comprising an investigation device body, wherein an installation slot for installing an electronic device is provided at the upper end of the investigation device body, and an investigation hole is provided in the installation slot; and a camera on the electronic device can coincide with the investigation hole.

[0007] In an optional embodiment, an upper fixing cover for fixing the electronic device in the mounting groove is provided on the main body of the survey equipment;

[0008] One end of the upper fixed cover is hinged on the main body of the exploration equipment, and the other end is connected to the main body of the exploration equipment through a fixing component.

[0009] In an optional embodiment, the upper fixing cover extends toward the lower boss of the exploration equipment body, and a fixing groove matching the lower boss is provided on the exploration equipment body;

[0010] The fixing assembly includes a pin shaft, a pushing handle fixed to the pin shaft, and a spring arranged at one end of the pin shaft and moving the pin shaft toward the lower boss;

[0011] A fixing hole is arranged on the lower boss, and the spring enables the pin shaft to be inserted into the fixing hole and fixed.

[0012] In an optional embodiment, a protection strip is provided on a side of the upper fixed cover facing the electronic device, and the protection strip is provided along an edge of the electronic device.

[0013] In an optional embodiment, a buffer pad is provided on the side wall of the mounting groove, and the electronic device is located in the mounting area formed by the buffer pad.

[0014] In an optional embodiment, a charging port for connecting the electronic device to a charging terminal is provided on the mounting groove.

[0015] In an optional embodiment, the survey equipment body includes an imaging body and a bottom bracket arranged at the lower end of the imaging body.

[0016] In an optional embodiment, the bottom bracket includes a bracket body, a magnet is arranged on the bracket body, and a magnetic hole matching the magnet is arranged at the lower end of the imaging body.

[0017] In an optional embodiment, the bracket body is provided with a plurality of adjusting long slots, and the adjusting long slots are provided with a first long hole opening toward the lower end and a second long hole opening toward the side;

[0018] A support foot that can move along the length direction of the adjusting long slot is arranged in the adjusting long slot, and the lower end of the support foot extends out from the first long strip hole and can contact the supporting surface;

[0019] A sliding screw is threadedly connected to the supporting foot, and the sliding screw can contact the inner wall of the adjusting long slot and fix the position of the supporting foot on the adjusting long slot.

[0020] In an optional embodiment, the imaging body includes an imaging shell, the exploration hole is arranged on the imaging shell, and a fixed lens imaging structure and a movable lens imaging structure are sequentially arranged at the lower end of the exploration hole;

[0021] The movable lens imaging structure comprises a movable motor, a lens seat assembly and a movable limiting assembly; one end of the lens seat assembly is provided with a movable seat screwed to the driving shaft of the movable motor, and the other end is provided with a limiting boss cooperating with the movable limiting assembly to limit the moving range of the lens seat assembly;

[0022] The movable seat is also provided with a slide bar, and one end of the slide bar is fixedly connected to the imaging housing, and the slide bar is used to move the movable seat along the length direction of the slide bar.

[0023] In an optional embodiment, the main body of the exploration equipment further includes a light source, which is used to irradiate light onto the surface of the object; the light source can excite the fluorescence of the physical evidence material, and the main body of the exploration equipment further includes a filter, the fluorescence can sequentially pass through the lens of the movable lens imaging structure, the lens of the fixed lens imaging structure and the filter, and the filter is used to filter out interference light in the fluorescence;

[0024] And / or, the light source is used to illuminate the survey area of ​​the survey equipment body.

[0025] In an optional embodiment, the light source includes a main light source, and the angle between the irradiation direction of the main light source and the lens of the fixed lens imaging structure is 30°-60°;

[0026] And / or, the light source includes a side light source, and when the lens of the fixed lens imaging structure faces the surface of the object, the light emitted by the side light source toward the surface of the object is flat grazing light;

[0027] And / or, the light source further includes a marking light source, and the marking light source can illuminate the observation position of the fixed lens imaging structure.

[0028] In an optional embodiment, the side light source includes a lifting motor, a lifting shaft, a lifting fixture disposed on the lifting shaft, and a side light source body disposed on the lifting fixture;

[0029] The lifting motor is fixed on the imaging housing, the lifting shaft is arranged at the lower end of the lifting motor, the lifting fixture is screwed on the lifting shaft, and the side light source body is connected to the lifting fixture;

[0030] A lifting and limiting component is arranged on the imaging housing, and the lifting and limiting component is used to limit the lifting range of the side light source body.

[0031] In an optional embodiment, the side light source body includes a side light radiator and a side light emission source arranged at the lower end of the side light radiator; the side light radiator is connected to the lifting fixture and cooperates with the lifting limit assembly to limit the lifting range of the side light source body.

[0032] In an optional embodiment, an observation hole is provided at the lower end of the imaging housing, and the observation hole is located at the lower end of the movable lens imaging structure, and the main light source is provided on the side of the observation hole.

[0033] In an optional embodiment, at least three main light sources are evenly arranged around the observation hole.

[0034] In an optional embodiment, the light source further includes an auxiliary uniform white light source and an auxiliary ultraviolet light source; the auxiliary uniform white light source and the auxiliary ultraviolet light source are used to assist the user in conducting a large-area search.

[0035] The portable trace evidence investigation equipment provided by the present invention can cooperate with an electronic device, that is, the camera of the electronic device cooperates with the investigation hole of the investigation equipment body to realize imaging of the electronic device and the investigation equipment body, so as to reduce the volume of the entire portable trace evidence investigation equipment, and facilitate the use of the portable trace evidence investigation equipment for investigation of complex environments such as high places, facades or corners. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic diagram of the structure of a portable trace evidence investigation device provided by an embodiment of the present invention;

[0038] Figure 2 for Figure 1 A schematic diagram of the structure of the electronic equipment for extracting the portable trace evidence investigation equipment shown;

[0039] Figure 3 for Figure 1 A schematic structural diagram of the portable trace evidence detection device from another angle shown;

[0040] Figure 4 for Figure 3 The schematic structural diagram of the AA section of the portable trace evidence investigation equipment shown;

[0041] Figure 5 for Figure 3 The schematic structural diagram of the BB section of the portable trace evidence investigation equipment shown;

[0042] Figure 6 for Figure 3 A schematic diagram showing the positional relationship between the upper fixed cover and the buffer pad of the portable trace evidence investigation equipment shown;

[0043] Figure 7 for Figure 6 A partial enlarged view of C showing the schematic diagram of the positional relationship between the upper fixing and the buffer pad;

[0044] Figure 8A schematic structural diagram of a portable trace evidence investigation device provided by an embodiment of the present invention from another angle;

[0045] Fig. 9 for Figure 8 A schematic diagram of the structure of the bottom bracket of the portable trace evidence investigation equipment shown;

[0046] Fig.10 A schematic structural diagram of a portable trace evidence investigation device provided by an embodiment of the present invention from another angle;

[0047] Fig.11 for Fig.10 The schematic diagram of the positional relationship between the mobile lens imaging structure and the side light source of the portable trace evidence investigation equipment shown;

[0048] Fig.12 for Fig.11 The schematic diagram of the structure of the mobile lens imaging structure of the portable trace evidence investigation equipment shown;

[0049] Fig.13 for Fig.11 The schematic diagram of the structure of the side light source of the portable trace evidence detection equipment shown;

[0050] Fig.14 for Fig.10 A schematic diagram of the internal structure of the imaging body of the portable trace evidence investigation equipment is shown.

[0051] Icons: 100-imaging body; 200-bottom bracket; 201-bracket body; 202-support foot; 203-sliding screw; 204-second long hole; 205-magnet; 300-electronic equipment; 400-protective strip; 500-fixing slot; 600-upper fixing cover; 601-lower boss; 602-fixing hole; 700-buffer pad; 800-pin shaft; 900-push handle; 110-spring; 120-charging port; 130-auxiliary ultraviolet light source; 140-auxiliary uniform white light source; 150-exploration hole; 160-fixed Lens imaging structure; 170-movable lens imaging structure; 180-observation hole; 190-filter; 210-side light source; 220-marking light source; 230-moving motor; 240-lens seat assembly; 250-limiting boss; 260-moving limiting assembly; 270-moving seat; 280-driving shaft; 290-sliding rod; 310-lifting motor; 320-lifting shaft; 330-lifting fixture; 340-side light radiator; 350-side light emitting source; 360-lifting limiting assembly; 370-installation slot; 380-main light source. DETAILED DESCRIPTION

[0052] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Example

[0054] Reference Figure 1-Figure 14 The present invention provides a portable trace evidence investigation device, including an investigation device body, a mounting groove 370 for installing an electronic device 300 is arranged at the upper end of the investigation device body, and an investigation hole 150 is arranged in the mounting groove 370; and a camera on the electronic device 300 can overlap with the investigation hole 150.

[0055] An installation slot 370 is provided on the main body of the survey equipment. The installation slot 370 is adjusted according to the size of the electronic device 300. The electronic device 300 may be a mobile phone, a tablet, etc. For example, a certain model of Apple smartphone is used; the installation slot 370 is designed according to the size of the model of smartphone.

[0056] After the electronic device 300 is installed in the installation slot 370, the camera of the electronic device 300 can overlap with the exploration hole 150, and the electronic device 300 and the exploration equipment body are used to form an imaging system, and the preservation of the image is convenient. Such a setting can reduce the size of the entire exploration equipment body, facilitate the carrying of portable trace evidence exploration equipment, and facilitate the exploration of some places where it is difficult to install evidence exploration equipment, and facilitate the exploration of some places where it is difficult to use large evidence exploration equipment, such as high places, corners, the back of large objects (tables, drawers facing the ground), etc., so that the exploration efficiency is further improved.

[0057] Reference Figure 3 , Figure 4 and Figure 6 In an optional embodiment, an upper fixing cover 600 is provided on the main body of the exploration equipment for fixing the electronic device 300 in the mounting groove 370; and one end of the upper fixing cover 600 is hinged on the main body of the exploration equipment, and the other end is connected to the main body of the exploration equipment through a fixing component.

[0058] In order to ensure that the electronic device 300 on the main body of the exploration equipment can be firmly fixed in the installation groove 370, an upper fixing cover 600 is provided on the main body of the exploration equipment. When the electronic device 300 needs to be installed in the installation groove 370, the upper fixing cover 600 is rotated to one side, the electronic device 300 is installed in the installation groove 370, and then the upper fixing cover 600 is rotated so that the upper fixing cover 600 covers the electronic device 300, and the upper fixing cover is connected to the main body of the exploration equipment through a fixing component, so that the electronic device 300 is fixed on the main body of the exploration equipment.

[0059] Reference Figure 6 and Figure 7 In an optional embodiment, the upper fixing cover 600 extends toward a lower boss 601 of the exploration equipment body, and a fixing groove 500 matching the lower boss 601 is provided on the exploration equipment body; the fixing assembly includes a pin 800, a pushing handle 900 fixed to the pin 800, and a spring 110 provided at one end of the pin 800 and moving the pin 800 toward the lower boss 601; a fixing hole 602 is provided on the lower boss 601, and the spring 110 enables the pin 800 to be inserted into the fixing hole 602 and fixed.

[0060] The upper fixing cover 600 has a lower boss 601 which can be inserted into the fixing groove 500 on the main body of the exploration equipment. The pin 800 is inserted into the fixing hole 602 of the lower boss 601 under the action of the spring 110 and remains fixed, thereby fixing the upper fixing cover 600 on the main body of the exploration equipment.

[0061] When the electronic device 300 is taken out, the push handle 900 is moved to drive the pin 800 to compress the spring 110, so that the pin 800 is moved out of the fixing hole 602 of the lower boss 601, so that the upper fixing cover 600 can be rotated, and the electronic device 300 can be taken out.

[0062] Reference Figure 1 In an optional embodiment, a protection strip 400 is provided on a side of the upper fixing cover 600 facing the electronic device 300 , and the protection strip 400 is provided along an edge of the electronic device 300 .

[0063] In order to prevent the upper fixing cover 600 from fixing the electronic device 300 and causing damage to the electronic device 300, a protective strip 400 is provided on the upper fixing cover 600. The upper fixing cover 600 is in contact with the electronic device 300 through the protective strip 400, which effectively prevents the screen of the electronic device 300 from being worn.

[0064] In an optional implementation, a buffer pad 700 is provided on the side wall of the mounting groove 370 , and the electronic device 300 is located in the mounting area formed by the buffer pad 700 .

[0065] In order to prevent the electronic device 300 from colliding with the side wall of the mounting groove 370 and affecting the appearance of the electronic device 300, a buffer pad 700 is provided in the mounting groove 370. The buffer pad 700 is located between the electronic device 300 and the side wall of the mounting groove 370, thereby effectively preventing scratches on the electronic device 300. Different buffer pads 700 are matched with the electronic device 300 so that the mounting groove 370 can be used to install electronic devices 300 of different models.

[0066] In order to facilitate charging of the electronic device 300 , in an optional embodiment, a charging port 120 for connecting the electronic device 300 to a charging terminal is provided on the mounting groove 370 .

[0067] Reference Figure 8 and Fig. 9 In an optional embodiment, the survey equipment body includes an imaging body 100 and a bottom bracket 200 arranged at the lower end of the imaging body 100 .

[0068] In an optional embodiment, the bottom bracket 200 includes a bracket body 201 , a magnet 205 is disposed on the bracket body 201 , and a magnetic hole matching the magnet 205 is disposed at the lower end of the imaging body 100 .

[0069] In order to avoid contamination caused by the portable trace evidence investigation equipment during use, the bottom bracket 200 on the main body of the investigation equipment is replaceable, so as to avoid contamination of the main body of the investigation equipment; a magnet 205 is arranged on the bottom bracket 200, and a magnetic hole is arranged at the upper end of the imaging body 100, and a magnet 205 or ferromagnetic material is arranged in the magnetic hole; in order to make the bottom bracket 200 and the imaging body 100 more firmly connected, a magnet 205 is generally also arranged in the magnetic hole.

[0070] In an optional embodiment, the bracket body 201 is provided with a plurality of adjustment slots, and the adjustment slots are provided with a first slot opening toward the lower end and a second slot opening toward the side 204;

[0071] A support foot 202 is provided in the adjusting slot and can move along the length direction of the adjusting slot, and the lower end of the support foot 202 extends from the first elongated hole and can contact the supporting surface;

[0072] A sliding screw 203 is screwed onto the support foot 202 , and the sliding screw 203 can contact the inner wall of the adjusting slot and fix the position of the support foot 202 on the adjusting slot.

[0073] According to the surface conditions of the object, when it is necessary to adjust the supporting position of the supporting foot 202, loosen the sliding screw 203 so that the supporting foot 202 can move along the first long hole; after the supporting foot 202 moves to the appropriate position, tighten the sliding screw 203 so that the sliding screw 203 abuts against the inner wall of the adjusting long groove, thereby fixing the position of the supporting foot 202.

[0074] Reference Figure 4 , Figure 5 , Fig.11 , Fig.12 and Fig.14 In an optional embodiment, the imaging body 100 includes an imaging shell, the exploration hole 150 is arranged on the imaging shell, and a fixed lens imaging structure 160 and a movable lens imaging structure 170 are sequentially arranged at the lower end of the exploration hole 150;

[0075] The movable lens imaging structure 170 includes a movable motor 230, a lens seat assembly 240 and a movable limiting assembly 260; one end of the lens seat assembly 240 is provided with a movable seat 270 screwed to a driving shaft 280 of the movable motor 230, and the other end is provided with a limiting boss 250 cooperating with the movable limiting assembly 260 to limit the moving range of the lens seat assembly 240;

[0076] A slide bar 290 is also disposed on the movable seat 270 , and one end of the slide bar 290 is fixedly connected to the imaging housing. The slide bar 290 is used to move the movable seat 270 along the length direction of the slide bar 290 .

[0077] The fixed lens imaging structure 160 is similar to the lens barrel of a microscope, and includes lens, lens, lens, lens, lens pressure ring, lens and lens pressure ring from top to bottom. The lower end of the fixed lens imaging structure 160 is a movable lens structure, and the lens seat assembly 240 of the movable lens mechanism includes an adjustable lens and an adjustable lens seat, and the movable seat 270 and the limiting boss 250 are respectively arranged on the opposite sides of the adjustable lens seat. The movable motor 230 rotates the driving shaft 280. Since the movable seat 270 is screwed with the driving shaft 280 and under the action of the sliding rod 290, the movable seat 270 cannot rotate, and then the movable seat 270 can move along the length direction of the driving shaft 280, that is, the movement of the lens seat assembly 240 is realized. The length directions of the sliding rod 290 and the driving shaft 280 are in the same direction.

[0078] The main body of the exploration equipment also includes a control system, a heat dissipation system and a power supply system. Generally, the battery of the power supply system is located at the lower end of the electronic device 300, which is convenient for maintaining the power supply system. The heat dissipation system dissipates heat for the entire main body of the exploration equipment. Heat dissipation holes are also provided on the main body of the exploration equipment. Generally, the heat dissipation system includes a fan, which allows air to enter from some heat dissipation holes and flow out from other heat dissipation holes after heat exchange.

[0079] The movable limit assembly 260 is two distance sensors or other limit switches arranged on both sides of the limit boss 250. When the movable motor 230 moves the lens seat assembly 240, when the limit boss 250 triggers the movable limit assembly 260, the movable limit assembly 260 sends a signal to the control system, and the control system stops the movable motor 230 from rotating or rotates in the opposite direction, thereby preventing the lens seat assembly 240 from excessive movement and causing damage to the lens seat assembly 240.

[0080] In an optional embodiment, the main body of the survey equipment further includes a light source, which is used to irradiate light onto the surface of the object; the light source can excite the fluorescence of the physical evidence material, and the main body of the survey equipment further includes a filter 190, the fluorescence can sequentially pass through the lens of the movable lens imaging structure 170, the lens of the fixed lens imaging structure 160 and the filter 190, and the filter 190 is used to filter out interference light in the fluorescence;

[0081] Reference Fig.10 As a feasible implementation method, the light source is used to illuminate the survey area of ​​the survey equipment body.

[0082] In an optional embodiment, the light source includes a main light source 380, and the angle between the irradiation direction of the main light source 380 and the lens of the fixed lens imaging structure 160 is 30°-60°. The main light source 380 irradiates the surface of the object to obtain effective fluorescence information.

[0083] The above-mentioned light source includes a side light source 210. When the lens of the fixed lens imaging structure 160 is facing the surface of an object, the light emitted by the side light source 210 toward the surface of the object is flat grazing light, which is convenient for reducing the interference of the fluorescence of special objects (such as paint containing fluorescent agents) themselves on the fluorescence excited by the physical evidence material.

[0084] The above-mentioned light source may include a marking light source 220, and the marking light source 220 can illuminate the observation position of the fixed lens imaging structure 160. Therefore, the light emitted by the marking light source 220 can be used to mark the observation area, so that the investigator can directly observe the position on the surface of the physical evidence corresponding to the lens of the current fixed lens imaging structure 160 from the side for extraction, and avoid mis-extraction.

[0085] Reference Fig.13 In an optional embodiment, the side light source 210 includes a lifting motor 310, a lifting shaft 320, a lifting fixture 330 disposed on the lifting shaft 320, and a side light source body disposed on the lifting fixture 330;

[0086] The lifting motor 310 is fixed on the imaging housing, the lifting shaft 320 is arranged at the lower end of the lifting motor 310, the lifting fixture 330 is screwed on the lifting shaft 320, and the main body of the side light source 210 is connected to the lifting fixture 330;

[0087] A lifting and limiting component 360 is arranged on the imaging housing, and the lifting and limiting component 360 is used to limit the lifting range of the side light source body.

[0088] The side light source body includes a side light LED lamp, a side light lens, a side light baffle, etc. Among them, an adjustable button for adjusting the height of the side light source body is also provided on the main body of the survey equipment. By operating the adjustable button and adjusting the height of the side light source body according to the unevenness of the object, the side light source body is kept irradiated in a glancing light manner.

[0089] In an optional embodiment, the side light source 210 body includes a side light heat sink 340 and a side light emission source 350 arranged at the lower end of the side light heat sink 340; the side light heat sink 340 is connected to the lifting fixture 330 and cooperates with the lifting limit assembly 360 to limit the lifting range of the side light source 210 body.

[0090] When the inspected object is not a special object, the lifting motor 310 causes the main body of the side light source 210 to rise along the lifting shaft 320 to prevent the side light source 210 from interfering with the inspected object, which is particularly suitable for on-site environments with uneven object surfaces.

[0091] In order to avoid excessive lifting of the main body of the side light source 210, a lifting limit assembly 360 is respectively provided at the upper and lower ends of the side light radiator 340. Generally, the lifting limit assembly 360 is a limit switch. When the side light radiator 340 follows the lifting fixture 330 to lift and lower, in order to avoid excessive lifting of the main body of the side light source 210, the lifting limit assembly 360 cooperates with the side light radiator 340, and the side light radiator 340 triggers the lifting limit assembly 360, such as the limit switch. The limit switch sends a signal to the control system, and the control system controls the lifting motor 310 to stop rotating or rotate in the opposite direction.

[0092] In an optional embodiment, an observation hole 180 is provided at the lower end of the imaging housing, and the observation hole 180 is located at the lower end of the movable lens imaging structure 170 , and the main light source 380 is provided on the side of the observation hole 180 .

[0093] Reference Fig.10 Four main light sources 380 are arranged around the observation hole 180. The main light sources 380 are coaxial light sources. The main light sources 380 are arranged around the observation hole 180, so that light can be provided around the physical evidence material to excite fluorescence at the same time.

[0094] In an optional embodiment, at least three main light sources 380 are evenly arranged around the observation hole 180 .

[0095] Generally, more than three main light sources 380 are arranged around the observation hole 180 to meet the requirement of having light around the physical evidence material to stimulate fluorescence.

[0096] The main light source 380 irradiates the surface of the object facing the observation hole 180 to effectively obtain fluorescence information; the main light source 380 includes a light source pressure ring, a light source lens and a light source LED which are arranged in sequence; the light source lens focuses the light emitted by the light source LED, and when the condition for exciting fluorescence is met, the power of the light source LED increased by adding the light source lens is smaller, and the light source lens is generally an optical lens.

[0097] Reference Fig. 9 In an optional embodiment, the light source further includes an auxiliary uniform white light source 140 and an auxiliary ultraviolet light source 130; the auxiliary uniform white light source 140 and the auxiliary ultraviolet light source 130 are used to assist the user in conducting a large-area search.

[0098] The auxiliary ultraviolet light source 130 and the auxiliary uniform white light source 140 are both arranged on the main body of the survey equipment. When a large area needs to be surveyed, the auxiliary ultraviolet source is used as an excitation light source, and the auxiliary uniform white light source is combined for lighting or as side lighting to observe the contrast, thereby conducting a large-scale search.

[0099] The auxiliary ultraviolet light source 130 includes an ultraviolet LED and a corresponding color filter. The light emitted by the ultraviolet LED is used to excite biological fluorescence after passing through the color filter.

[0100] The auxiliary uniform white light source comprises a uniform light LED and a uniform light barrel which are arranged in sequence, a spacer, a uniform light lens, a uniform light lens, a uniform light lens and a uniform light locking ring are arranged in sequence in the uniform light barrel, and the uniform light LED is arranged adjacent to the spacer.

[0101] The portable trace evidence investigation equipment is also provided with buttons for controlling the control system and some conventional settings such as a lanyard interface, a battery compartment, a battery compartment fixing plate, a charging component, etc.

[0102] The portable trace evidence investigation equipment provided by the present invention can cooperate with the electronic device 300, that is, the camera of the electronic device 300 cooperates with the investigation hole 150 of the investigation equipment body to realize imaging of the electronic device 300 and the investigation equipment body, so as to reduce the volume of the entire portable trace evidence investigation equipment, and facilitate the use of the portable trace evidence investigation equipment to investigate complex places such as high places and angles.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable trace evidence investigation device, characterized in that: It comprises an exploration equipment body, wherein a mounting groove (370) for mounting an electronic device (300) is provided at the upper end of the exploration equipment body, and an exploration hole (150) is provided in the mounting groove (370); and a camera on the electronic device (300) can overlap with the exploration hole (150); The survey equipment body comprises an imaging body (100) and a bottom bracket (200) arranged at the lower end of the imaging body (100); The bottom bracket (200) comprises a bracket body (201), a magnet (205) is arranged on the bracket body (201), and a magnetic attraction hole matching the magnet (205) is arranged at the lower end of the imaging body (100); The support body (201) is provided with a plurality of adjusting long slots, wherein the adjusting long slots are provided with a first long hole opening toward the lower end and a second long hole (204) opening toward the side. A support foot (202) is provided in the adjusting long slot and is movable along the length direction of the adjusting long slot, and the lower end of the support foot (202) extends out from the first long strip hole and is capable of contacting the support surface; A sliding screw (203) is threaded onto the support foot (202), and the sliding screw (203) is capable of contacting the inner wall of the adjustment slot and fixing the position of the support foot (202) on the adjustment slot; The imaging body (100) comprises an imaging shell, the exploration hole (150) is arranged on the imaging shell, and a fixed lens imaging structure (160) and a movable lens imaging structure (170) are sequentially arranged at the lower end of the exploration hole (150); The movable lens imaging structure (170) comprises a movable motor (230), a lens seat assembly (240) and a movable limit assembly (260); one end of the lens seat assembly (240) is provided with a movable seat (270) threadedly connected to a driving shaft (280) of the movable motor (230), and the other end is provided with a limit boss (250) that cooperates with the movable limit assembly (260) to limit the moving range of the lens seat assembly (240); The movable seat (270) is also provided with a sliding rod (290), and one end of the sliding rod (290) is fixedly connected to the imaging housing, and the sliding rod (290) is used to enable the movable seat (270) to move along the length direction of the sliding rod (290).

2. The portable trace evidence investigation device according to claim 1, characterized in that: An upper fixing cover (600) is provided on the main body of the survey equipment and is used to fix the electronic equipment (300) in the mounting groove (370); One end of the upper fixed cover (600) is hinged on the main body of the exploration equipment, and the other end is connected to the main body of the exploration equipment via a fixing component.

3. The portable trace evidence investigation device according to claim 2, characterized in that: The upper fixing cover (600) has a lower boss (601) extending toward the main body of the survey equipment, and a fixing groove (500) matching the lower boss (601) is provided on the main body of the survey equipment; The fixing assembly comprises a pin shaft (800), a pushing handle (900) fixedly connected to the pin shaft (800), and a spring (110) arranged at one end of the pin shaft (800) and moving the pin shaft (800) toward the lower boss (601); A fixing hole (602) is provided on the lower boss (601), and the spring (110) enables the pin shaft (800) to be inserted into the fixing hole (602) and fixed.

4. The portable trace evidence investigation device according to claim 3 is characterized in that: A protection strip (400) is provided on the side of the upper fixed cover (600) facing the electronic device (300), and the protection strip (400) is provided along the edge of the electronic device (300).

5. The portable trace evidence investigation device according to claim 1, characterized in that: A buffer pad (700) is provided on the side wall of the installation groove (370), and the electronic device (300) is located in the installation area formed by the buffer pad (700).

6. The portable trace evidence investigation device according to claim 1, characterized in that: The mounting groove (370) is provided with a charging port (120) for connecting the electronic device (300) to a charging terminal.

7. The portable trace evidence investigation device according to claim 1, characterized in that: The main body of the exploration equipment further comprises a light source, the light source being used to irradiate light onto the surface of an object; the light source being able to excite the fluorescence of the physical evidence material; the main body of the exploration equipment further comprises a filter (190), the fluorescence being able to sequentially pass through the lens of the movable lens imaging structure (170), the lens of the fixed lens imaging structure (160) and the filter (190); the filter (190) being used to filter out interfering light in the fluorescence; And / or, the light source is used to illuminate the survey area of ​​the survey equipment body.

8. The portable trace evidence investigation device according to claim 7, characterized in that: The light source comprises a main light source (380), and the angle between the irradiation direction of the main light source (380) and the lens of the fixed lens imaging structure (160) is 30°-60°; And / or, the light source comprises a side light source (210), and when the lens of the fixed lens imaging structure (160) faces the surface of an object, the light emitted by the side light source (210) toward the surface of the object is flat glancing light; And / or, the light source further comprises a marking light source (220), and the marking light source (220) is capable of irradiating an observation position of the fixed lens imaging structure (160).

9. The portable trace evidence investigation device according to claim 8, characterized in that: The side light source (210) comprises a lifting motor (310), a lifting shaft (320), a lifting fixture (330) arranged on the lifting shaft (320), and a side light source (210) body arranged on the lifting fixture (330); The lifting motor (310) is fixedly mounted on the imaging housing, the lifting shaft (320) is arranged at the lower end of the lifting motor (310), the lifting fixture (330) is screwed onto the lifting shaft (320), and the side light source (210) body is connected to the lifting fixture (330); A lifting and limiting component (360) is provided on the imaging housing, and the lifting and limiting component (360) is used to limit the lifting and lowering range of the main body of the side light source (210).

10. The portable trace evidence investigation device according to claim 9, characterized in that: The side light source (210) body comprises a side light radiator (340) and a side light emission source (350) arranged at the lower end of the side light radiator (340); the side light radiator (340) is connected to the lifting fixture (330) and cooperates with the lifting limit assembly (360) to limit the lifting range of the side light source (210) body.

11. The portable trace evidence investigation device according to claim 8, characterized in that: An observation hole (180) is provided at the lower end of the imaging housing, and the observation hole (180) is located at the lower end of the movable lens imaging structure (170), and the main light source (380) is arranged on the side of the observation hole (180).

12. The portable trace evidence investigation device according to claim 11, characterized in that: At least three main light sources (380) are evenly arranged in the circumference of the observation hole (180).

13. The portable trace evidence investigation device according to claim 8, characterized in that: The light source further comprises an auxiliary uniform white light source (140) and an auxiliary ultraviolet light source (130); the auxiliary uniform white light source (140) and the auxiliary ultraviolet light source (130) are used to assist a user in conducting a large-area search.

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