Trace evidence discovery and extraction unmanned aerial vehicle

Abstract

The utility model relates to an unmanned aerial vehicle for finding and extracting trace material evidences. The unmanned aerial vehicle comprises video recording equipment, a carrying platform, an extraction control device, an extraction combination device, an unmanned aerial vehicle and a remote controller, the video recording equipment is fixed at the front end of the unmanned aerial vehicle; the carrying platform is fixed below the unmanned aerial vehicle; a laser ranging module is arranged on the extraction control device; and the extraction combination device is fixed in front of the extraction control device. According to the utility model, effective, rapid and accurate extraction of trace material evidences can be realized in hazardous environments such as high altitude, blast sites and the like, and dangerous operation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to a UAV for discovering and extracting trace evidence. Background Art

[0002] In the fields of criminal case scene investigation and forensic identification, the discovery and extraction of trace evidence is an important link. However, when the trace evidence that needs to be discovered and extracted is located in potentially hazardous environments such as high altitudes or explosion sites, traditional practices mainly rely on manual climbing or wearing protective equipment to enter, which is affected by environmental factors. Not only is the discovery and extraction of trace evidence slow, but the potential dangerous factors also pose a certain threat to the life safety of operators. Utility Model Content

[0003] The purpose of the utility model is to provide a trace evidence discovery and extraction drone, which can realize the effective, rapid and accurate extraction of trace evidence in hazardous environments such as high altitude and explosion sites, thus avoiding dangerous operations.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a trace evidence discovery and extraction drone, comprising a video recording device, a carrying platform, an extraction control device, an extraction combination device, a drone and a remote control; the video recording device is fixed at the front end of the drone; the carrying platform is fixed below the drone; the extraction control device is provided with a laser ranging module; and the extraction combination device is fixed in front of the extraction control device.

[0005] Furthermore, the recording device is a high-definition camera combined with an infrared camera.

[0006] Furthermore, the extraction control device includes a support plate, a rotating motor and a servo, the support plate is fixed above the drone through a support plate, the servo is fixed on the support plate through a square block, a long block is fixed on the upper end of the square block, a U-shaped block is provided on the upper end of the long block, a telescopic control component for controlling the forward and backward movement of the U-shaped block is provided at the output end of the servo, a long plate is provided above the U-shaped block, the rotating motor is fixed at the rear end of the long plate, a long rod is fixed at the output end of the rotating motor, and the extraction combination device is fixed at the other end of the long rod.

[0007] Furthermore, the telescopic control assembly includes a guide plate, a splint and a fixing column, the guide plate is fixed to the output end of the servo, the guide plate is provided with a first long strip opening, the long strip block is provided with a second long strip opening, the splints are fixed on both sides of the bottom of the U-shaped block, the splints are located on both sides of the second long strip opening, and a fixing column is fixed on the inner side of the splint, the fixing column is located in the second long strip opening, one end of the fixing column passes through the through hole on one side of the splint and the first long strip opening and is fixedly connected to the limit block located on the outer side of the guide plate, and an axis block is provided between the splint and the guide plate, and the axis block is sleeved on the fixing column.

[0008] Furthermore, a first guide sleeve is fixed on both the front and rear sides of the lower surface of the long board, a guide column is fixed on both the front and rear sides of the U-shaped block, the first guide sleeve is sleeved on the guide column, a first buffer spring is sleeved on the guide column, and the first buffer spring is located on the side of the guide sleeve.

[0009] Furthermore, a Japanese-shaped hollow block is fixed above the long board, a second through hole is opened on the hollow block, and the long rod is arranged in the second through hole through a bearing sleeve.

[0010] Furthermore, a connecting key is fixed to the front end of the long strip, a second guide sleeve is fixed on the connecting key, and the second guide sleeve is sleeved on the long rod.

[0011] Furthermore, the extraction assembly device includes a first connector, a second connector and a second buffer spring. The first connector is fixedly connected to the extraction control device, and the first connector is fixedly connected to the second connector via the second buffer spring.

[0012] Beneficial effects of the present invention: Based on various light source / spectrum platforms, the present invention searches for trace evidence by adding various color filters in front of the lens of the high-definition recording device. The extraction assembly simulates the manual extraction motion by the expansion and contraction and rotation movements generated by the extraction control device during operation, thus achieving effective, rapid, and accurate extraction of trace evidence. It has the following advantages:

[0013] ① High safety: The drone can be remotely controlled and can be used to detect and extract trace evidence. There is no need for personnel to climb or enter potentially hazardous environments, which greatly reduces safety risks and improves operational safety.

[0014] ② High efficiency: The trace evidence discovery and extraction drone can quickly reach a specified height or search for suspicious paths, and extract trace evidence, avoiding the drawbacks of traditional large-scale manpower search and greatly improving work efficiency.

[0015] ③Good accuracy: The extraction control device and extraction combination device of the trace evidence discovery and extraction drone can accurately control the extraction action through rotation and extension simulation, basically achieving the simulation of manual extraction action mode, thereby improving the extraction accuracy and success rate.

[0016] ④ Strong adaptability: The high-altitude exfoliated cell extraction drone can adapt to various complex environments, including but not limited to high-rise buildings, bridge cables, explosions, toxic and harmful sites, etc., and can effectively adapt to various trace evidence discovery and extraction scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the rear side of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the front side of the present invention;

[0019] Figure 3 is a side view of the present invention;

[0020] Figure 4 A top view of the present invention;

[0021] Figure 5 for Figure 1 A is an enlarged view of the structure of the extraction control device;

[0022] Figure 6 Schematic diagram of the structure of the extraction assembly device.

[0023] Among them: 1. Recording equipment, 2. Carrying platform, 3. Extraction control device, 31. Support plate, 32. Rotating motor, 33. Servo, 34. Support plate, 35. Square block, 36. Long strip block, 37. U-shaped block, 38. Telescopic control assembly, 381. Guide plate, 382. Clamp, 383. Axle block, 384. First long strip opening, 385. Second long strip opening, 386. Limit block, 39. Long plate, 30. Long rod, 4. Extraction combination device, 41. First connecting head, 42. Second connecting head, 43. Second buffer spring, 5. UAV, 6. Laser ranging module, 7. First guide sleeve, 8. Guide column, 9. First buffer spring, 10. Hollow square, 11. Connecting key, 12. Second guide sleeve. DETAILED DESCRIPTION

[0024] The present invention is further described below with reference to the accompanying drawings. For better understanding, the orientation of the present invention is described based on the orientation shown in the accompanying drawings and is not to be construed as limiting the present invention. The terms "first," "second," etc., are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0025] See also Figures 1 to 6The present invention provides an embodiment of a trace evidence discovery and extraction drone 5, comprising a recording device 1, a carrying platform 2, an extraction control device 3, an extraction assembly device 4, a drone 5, and a remote control. The recording device 1 is fixed to the front of the drone 5; the carrying platform 2 is fixed below the drone 5; the extraction control device 3 is equipped with a laser rangefinder module 6; and the extraction assembly device 4 is fixed in front of the extraction control device 3. The carrying platform 2 is responsible for carrying, but not limited to, multi-band visible light sources, various laser light sources, and various spectral imaging devices (which can be understood as flashlights that can be replaced with different light sources as needed). It cooperates with the high-definition recording device 1 to provide support for related light source imaging or spectral imaging. The drone 5 is the carrier of the entire system, responsible for delivering the high-definition recording device 1, the various light source / spectral carrying platform 2, the extraction control device 3, and the extraction assembly device 4 to a designated location. The drone 5 has a quad-rotor structure, capable of high-altitude positioning and hovering, precise flight capabilities, and can be controlled by a remote control. The drone 5 is also equipped with the high-definition recording device 1 and sensors for real-time transmission of on-site images and monitoring of environmental conditions, ensuring safe and accurate operation. The extraction control device 3 uses a rotary motor 32 to drive the extraction assembly 4. A servo 33 controls the forward and backward extension of the extraction assembly 4, simulating manual extraction (including but not limited to line brushing, line spraying, adhesive extraction, and cotton swab extraction). The device also features a laser rangefinder module 6. The distance data acquired by the sensor is displayed on an LED screen, providing a reference for the operator and improving extraction accuracy. The device also communicates with a remote control to receive control commands. The extraction assembly 4 is used to extract trace evidence, while the remote control is the operator's tool for interacting with the drone 5 system. The laser rangefinder module 6 acquires distance data and provides feedback to the operator, facilitating evidence collection. The remote control allows the operator to remotely control the takeoff, landing, and hovering of the drone 5, as well as the operation of the extraction control device 3. The remote control is equipped with an intuitive user interface and display, providing real-time display of the drone 5's status, location, and captured image information.

[0026] Please continue reading Figure 1 Only Figure 6 As shown, in one embodiment of the present invention, the recording device 1 is a high-definition camera combined with an infrared camera. The recording device 1 is a combination of a high-definition camera and an infrared camera, and can also support a combination of various color filters installed in front of the lens. Its functions include but are not limited to recording the relevant environment at the scene and searching, discovering, and photographing trace evidence.

[0027] Please continue reading Figures 2 to 5As shown, in one embodiment of the present invention, the extraction control device 3 includes a support plate 31, a rotating motor 32 and a steering gear 33. The support plate 31 is fixed above the drone 5 through a support plate 34. The steering gear 33 is fixed on the support plate 31 through a square block 35. A long block 36 is fixed to the upper end of the square block 35. A U-shaped block 37 is provided at the upper end of the long block 36. A telescopic control component 38 for controlling the forward and backward movement of the U-shaped block 37 is provided at the output end of the steering gear 33. A long rod 30 is provided above the U-shaped block 37. The rotating motor 32 is fixed to the rear end of the long plate 39. The long rod 30 is fixed to the output end of the rotating motor 32. The extraction combination device 4 is fixed to the other end of the long rod 30. The U-shaped block 37 can move back and forth driven by the servo 33 and the telescopic control assembly 38, thereby driving the long board 39 and the long rod 30 to move back and forth. The rotary motor 32 can control the long rod 30 to rotate to simulate the action mode during manual extraction, thereby realizing the effective, fast and accurate extraction of trace evidence.

[0028] Please continue reading Figure 1 and Figure 5 As shown, in one embodiment of the present invention, the telescopic control assembly 38 includes a guide plate 381, a clamping plate 382 and a fixing column. The guide plate 381 is fixed to the output end of the servo 33, and a first elongated opening 384 is opened on the guide plate 381, and a second elongated opening 385 is opened on the elongated block 36. The clamping plates 382 are fixed to both sides of the bottom of the U-shaped block 37. The clamping plates 382 are located on both sides of the second elongated opening 385, and a fixing column is fixed on the inner side of the clamping plate 382. The fixing column is located in the second elongated opening 385, and one end of the fixing column passes through the through hole on one side of the clamping plate 382 and the first elongated opening 384 and is fixedly connected to the limit block 386 located on the outer side of the guide plate 381. A shaft block 383 is provided between the clamping plate 382 and the guide plate 381, and the shaft block 383 is sleeved on the fixing column. The servo 33 drives the guide plate 381 to rotate so that the fixed column can move in the first long strip opening 384, thereby driving the fixed column to move forward and backward along the second long strip opening 385 synchronously, thereby driving the long plate 39 to move forward and backward above the long strip block 36.

[0029] Please continue reading Figure 3As shown, in one embodiment of the present invention, first guide sleeves 7 are fixed to the front and rear sides of the lower surface of the long plate 39, and guide posts 8 are fixed to the front and rear sides of the U-shaped block 37. The first guide sleeves 7 are mounted on the guide posts 8, and the guide posts 8 are mounted on the first buffer springs 9, which are located on the sides of the guide sleeves. The guide posts 8 and the first buffer springs 9 cooperate to cushion the movement of the long bar 30 driven by the long bar 36 when the U-shaped block 37 is moved forward and backward by the servo 33, thereby preventing the extraction assembly 4 from damaging trace evidence due to the power of the servo 33.

[0030] Please continue reading Figure 5 As shown, in one embodiment of the present invention, a hollow square 10 in the shape of a Japanese character is fixed above the long plate 39. A second through-hole is formed in the hollow square 10, and the long rod 30 is mounted in the second through-hole via a bearing sleeve. The hollow square 10 is used to limit the movement of the long rod 30 when the servo 33 controls the long rod 30 to move forward and backward.

[0031] Please continue reading Figure 5 As shown, in one embodiment of the present invention, a connecting key 11 is fixed to the front end of the long bar 36, and a second guide sleeve 12 is fixed to the connecting key 11. The second guide sleeve 12 is sleeved on the long rod 30. The second guide sleeve 12 is used to limit the movement of the long rod 30 when the servo 33 controls the long rod 30 to move forward and backward.

[0032] Please continue reading Figure 5 As shown, in one embodiment of the present invention, the extraction combination device 4 includes a first connector 41, a second connector 42, and a second buffer spring 43. The first connector 41 is fixedly connected to the extraction control device 3, and the first connector 41 is fixedly connected to the second connector 42 via the second buffer spring 43. The first connector 41 is used to connect to the long rod 30, and the second connector 42 is used to fix extraction tools such as cotton swabs, adhesive extractors, and brushes. The external dimensions and internal diameter dimensions of the first connector 41 and the second connector 42 can be customized according to actual needs to adapt to different extraction needs (including but not limited to combined powder brushes for line brushing, combined reagents for line spraying, combined adhesive extractors for adhesion, combined cotton swabs for wiping extraction, etc.). During use, the extraction device used by the combination device can be quickly installed and used, and can be replaced multiple times.

[0033] The present invention has the following working principle: the present invention uses a drone to send high-definition recording equipment, various light source / spectrum carrying platforms, extraction control devices, and extraction combination devices to a designated location; a high-definition camera, an infrared camera and other recording equipment cooperate with a multi-band visible light source, various laser light sources, and various spectral imaging devices on the carrying platform to record the relevant environment on the scene and search, discover, and photograph trace evidence; when the drone flies to the designated location, the servo in the extraction control device drives the long strip to rotate, thereby driving the U-shaped block to move back and forth on the long strip, so that the rotating motor and the long rod can move back and forth, and the rotating motor can drive the rod to rotate, so as to simulate the action mode during manual extraction, thereby realizing effective, fast and accurate extraction of trace evidence.

[0034] The above description is only a preferred embodiment of the present invention and should not be understood as limiting the present application. All equivalent changes and modifications made within the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A drone for discovering and extracting trace evidence, characterized by: It includes a video recording device, a carrying platform, an extraction control device, an extraction combination device, a drone and a remote controller; the video recording device is fixed at the front end of the drone; The carrying platform is fixed below the UAV; the extraction control device is provided with a laser ranging module; and the extraction combination device is fixed in front of the extraction control device.

2. The trace evidence discovery and extraction drone according to claim 1, characterized in that: The recording device is a high-definition camera combined with an infrared camera.

3. The trace evidence discovery and extraction drone according to claim 1, characterized in that: The extraction control device includes a support plate, a rotating motor and a steering gear. The support plate is fixed above the drone through a support plate. The steering gear is fixed to the support plate through a square block. A long block is fixed to the upper end of the square block. A U-shaped block is provided at the upper end of the long block. A telescopic control component for controlling the forward and backward movement of the U-shaped block is provided at the output end of the steering gear. A long plate is provided above the U-shaped block. The rotating motor is fixed to the rear end of the long plate. A long rod is fixed to the output end of the rotating motor. The extraction combination device is fixed to the other end of the long rod.

4. The trace evidence discovery and extraction drone according to claim 3, characterized in that: The telescopic control assembly includes a guide plate, a splint and a fixing column, the guide plate being fixed to the output end of the servo, the guide plate being provided with a first long strip opening, the long strip block being provided with a second long strip opening, the splints being fixed on both sides of the bottom of the U-shaped block, the splints being located on both sides of the second long strip opening, and a fixing column being fixed on the inner side of the splint, the fixing column being located in the second long strip opening, one end of the fixing column passing through the through hole on one side of the splint and the first long strip opening and being fixedly connected to the limit block located on the outer side of the guide plate, an axis block being provided between the splint and the guide plate, and the axis block being sleeved on the fixing column.

5. The trace evidence discovery and extraction drone according to claim 3, characterized in that: A first guide sleeve is fixed on both the front and rear sides of the lower surface of the long board, and a guide column is fixed on both the front and rear sides of the U-shaped block. The first guide sleeve is sleeved on the guide column, and a first buffer spring is sleeved on the guide column. The first buffer spring is located on the side of the guide sleeve.

6. The trace evidence discovery and extraction drone according to claim 3, characterized in that: A hollow square in the shape of a Japanese character is fixed above the long plate. A second through hole is opened on the hollow square. The long rod is set in the second through hole through a bearing sleeve.

7. The trace evidence discovery and extraction drone according to claim 3, characterized in that: A connecting key is fixed to the front end of the long strip, a second guide shaft sleeve is fixed on the connecting key, and the second guide shaft sleeve is sleeved on the long rod.

8. The trace evidence discovery and extraction drone according to claim 1, characterized in that: The extraction assembly device includes a first connector, a second connector and a second buffer spring. The first connector is fixedly connected to the extraction control device, and the first connector is fixedly connected to the second connector via the second buffer spring.

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