CN212181025U

CN212181025U - Criminal investigation and inspection positioning device

Info

Publication number: CN212181025U
Application number: CN202020691583.8U
Authority: CN
Inventors: 郝晓明; 陈万昌; 胡跃军; 孙进广; 苟春宝; 杨磊; 任超
Original assignee: Banan Public Security Sub-Bureau
Current assignee: Banan Public Security Sub-Bureau
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-12-18
Anticipated expiration: 2030-04-29

Abstract

The utility model provides a criminal investigation testing positioning device, which comprises an angle scale, wherein the angle scale is placed at a measuring reference position, a digital display angle ruler and a laser range finder are arranged on the angle scale, and a distance measuring light ray emitted by the laser range finder coincides with an angle measuring line of the digital display angle ruler; the positioning device further comprises a laser reflection part matched with the laser range finder for use, and the position of the laser reflection part is a material evidence positioning point. By adopting the criminal investigation positioning device provided by the utility model, the limitation of selecting reference objects for many times in material evidence positioning can be broken through; adopt the utility model provides a device, in criminal investigation inspection positioning process, the operation is very convenient, swift.

Description

Criminal investigation and inspection positioning device

Technical Field

The utility model relates to a criminal investigation apparatus, concretely relates to criminal investigation positioner.

Background

The forensic science often relates to measurement, description and recording of physical evidence and the position between the physical evidence, and the objective and accurate measurement, description and recording of the position relationship between the physical evidence and the physical evidence are the basis of on-site analysis, on-site reconstruction and evidence fixation. At present, for physical evidence positioning in criminal case site investigation, usually, positioning is carried out in a mode of measuring the distance from a reference object after the reference object is selected at multiple points, but the positioning efficiency is low, the description difficulty is high, the recording form is not visual, particularly, the physical evidence positioning difficulty is high in a site with few reference objects (such as an outdoor open site), and in addition, when the position of the reference object is moved and changed, the accurate reduction difficulty of the original position of the physical evidence is high, so that site analysis, reconstruction and information mining are influenced.

Based on this, document CN209310811U provides a material evidence positioner, which includes a transparent angle scale, a support is disposed below the angle scale, a positioning hole is disposed on the angle scale, and a positioning pin capable of adjusting height is disposed in the positioning hole in a matching manner. The locator measures by means of the tape measure, when the locator is used, the tape measure is pulled out to measure the distance between the physical evidence and the central point, the angle value of the outer edge of the tape measure on the angle scale and the distance value corresponding to the measured point are read, and the distance and the angle between the physical evidence and the central point are recorded. However, the exploration positioning efficiency and accuracy of the method still need to be further optimized, and the operation convenience degree also needs to be further improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a criminal investigation positioner that efficiency is high accurate and convenient operation is tested to investigation location.

In order to achieve the above purpose, the present invention adopts the following technical solution.

A criminal investigation inspection positioning device comprises an angle scale, wherein the angle scale is placed at a measurement reference position, a digital display angle ruler and a laser range finder are arranged on the angle scale, and a distance measurement light ray emitted by the laser range finder is coincided with an angle measurement line of the digital display angle ruler; the positioning device further comprises a laser reflection part matched with the laser range finder for use, and the position of the laser reflection part is a material evidence positioning point.

Preferably, the laser rangefinder is located in the central region of the angle scale.

For further improving criminal investigation location's the degree of accuracy and location efficiency, the digital display goniometer includes reference scale and rotating ruler, and zero scale on the directional angle scale of reference scale, laser range finder fix on rotating ruler and can rotate along with the rotating ruler is synchronous.

Furthermore, the zero scale on the angle scale is positioned in the north direction, and the +/-180-degree scale on the angle scale is positioned in the south direction. By adopting the structure, the method is matched with the convention of 'north up and south down' of a survey recording plane schematic diagram, so that the recording mode is more intuitive, and the method is convenient for quick analysis and accurate study and judgment.

For improving criminal investigation testing positioning device's stability and flexibility, the rotation chi is located the reference scale top, is provided with the ball near the end of rotation chi, and along with the rotation of rotation chi, the ball can roll on the angle scale surface.

Furthermore, the angle measuring line of the digital display angle ruler is superposed with the central line of the rotating ruler in the length direction, and the angle reference line of the digital display angle ruler is superposed with the central line of the reference ruler in the length direction.

Further, an indication arrow is arranged at the middle line position of the end part of the rotating ruler. By adopting the structure, the positioning angle can be read by the digital display angle scale, and the data on the angle scale can be read directly.

For improving criminal investigation testing positioning device's commonality, laser reflex portion includes the support of can debugging, vertically wears to be equipped with the laser reflection pole on the operation panel of support of can debugging.

Further, the bottom of the laser reflection rod is conical; the laser reflection rod is connected to the operating platform through the thread adjusting piece, and the thread adjusting piece can be adjusted up and down along the operating platform.

In order to further improve the accuracy of criminal investigation positioning, horizontal columns are respectively arranged on the angle scale and the operation table of the adjustable bracket.

Has the advantages that: by adopting the criminal investigation positioning device provided by the utility model, the limitation of selecting reference objects for many times in material evidence positioning can be broken through; by adopting the device provided by the utility model, the operation is very convenient and fast in the criminal investigation positioning process, after the measuring reference position is selected and the measuring point is determined, one person can finish the investigation positioning within ten seconds, which not only greatly improves the on-site investigation positioning efficiency and realizes the effect of rapid investigation, but also can save manpower and material resources and simultaneously improve the accuracy of material evidence positioning; the criminal investigation testing positioning device provided by the utility model takes the north-righting direction as a zero angle, and is matched with the convention of 'north-up and south-down' of the investigation recording plane schematic diagram, so that the recording mode is more intuitive, and the rapid analysis and accurate study and judgment are facilitated; furthermore, the utility model provides a criminal investigation positioner still has the advantage that stability, flexibility are good, is applicable to arbitrary on-the-spot investigation.

Drawings

FIG. 1 is a schematic view of the criminal investigation positioning device of example 1;

FIG. 2 is a schematic side view of the criminal investigation positioning device of example 1;

FIG. 3 is a schematic view of the criminal investigation positioning device in the embodiment 2;

fig. 4 is an enlarged view of a portion a in fig. 2.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the following description of the embodiments is only for the purpose of helping understanding the principle and the core idea of the present invention, and is not intended to limit the scope of the present invention. It should be noted that modifications to the present invention may occur to those skilled in the art without departing from the principles of the present invention and are intended to fall within the scope of the appended claims.

Example 1

Referring to fig. 1, 2 and 4, a criminal investigation and location device comprises an angle scale 1, wherein the angle scale 1 is placed at a measurement reference position, a digital display angle scale and a laser range finder 5 are arranged on the angle scale 1, and a distance measurement light ray 6 emitted by the laser range finder 5 is coincided with an angle measurement line of the digital display angle scale; the positioning device further comprises a laser reflection part 11 which is matched with the laser range finder 5 for use, and the position of the laser reflection part 11 is a material evidence positioning point. The digital display angle ruler and the laser range finder 5 are commercially available products, and the laser range finder 5 is a small-sized product as much as possible.

Wherein, laser range finder 5 is located the central zone of angle scale 1, and zero scale on the angle scale 1 is located the true north direction, and scale 180 on the angle scale 1 is located the true south direction.

Wherein, digital display goniometer includes reference scale 3 and rotating scale 4, and the zero scale on the directional angle scale 1 of reference scale 3, laser range finder 5 is fixed on rotating scale 4 and can rotate along with rotating scale 4 is synchronous. The rotating ruler 4 is positioned above the reference ruler 3, a ball 13 is arranged at the tail end close to the rotating ruler 4, and the ball 13 can roll on the surface of the angle scale 1 along with the rotation of the rotating ruler 4. The angle measuring line of the digital display angle ruler is superposed on the central line of the rotating ruler 4 in the length direction, and the angle reference line of the digital display angle ruler is superposed on the central line of the reference ruler 3 in the length direction. An indication arrow 12 is provided at the center line of the end of the rotary ruler 4.

The laser reflection part 11 comprises an adjustable support 7, the adjustable support 7 adopts a tripod, and a laser reflection rod vertically penetrates through an operation table 8 of the adjustable support 7. The bottom of the laser reflection rod is conical; the laser reflection rod is connected to the operation table 8 through a thread adjusting piece 9, and the thread adjusting piece 9 can be adjusted up and down along the operation table 8.

Wherein, the angle scale 1 is provided with a horizontal column 2, and an operation table 8 of the adjustable bracket 7 is provided with a horizontal column 10. The compass 14 is further arranged on the angle scale 1, and the mirror surface (observation surface) of the compass 14 is flush with the surface of the angle scale 1, i.e. the compass 14 is embedded on the angle scale 1.

In this embodiment, an infrared light source is further disposed at the center of the bottom of the angle scale 1, and faces the ground for marking the measurement center point.

When the angle scale is used, a proper measuring reference position is selected, the angle scale 1 is placed at the measuring reference position, the measuring reference point of the laser range finder 5 is coincided with the center of the angle scale 1, the levelness and the placing direction of the angle scale 1 are adjusted to enable the south alignment direction of a compass 14 on the angle scale 1 to be aligned with +/-180-degree scales, and the reference scale 3 of the digital display angle scale is adjusted to enable the angle reference line 15 to be coincided with the central line of the reference scale 3 in the length direction; placing the adjustable support 7 in the area of the material to be tested to enable the laser reflection rod to be positioned right above the material to be tested, roughly adjusting the height of the operating platform 8, adjusting the operating platform 8 to be in a horizontal state, and finely adjusting the thread adjusting piece 9 to enable the laser reflection rod to be positioned at a proper height; and (3) opening the laser range finder 5, rotating the rotary ruler 4 to enable laser to be aligned with the laser reflection rod, and finally reading the distance displayed on the laser range finder 5 and the angle displayed on the digital display angle ruler. If another physical evidence positioning is needed on the same site, only the laser reflection part 11 needs to be moved to the corresponding position for measurement. Because laser range finder 5 is fixed on rotary ruler 4 and can rotate along with rotary ruler 4 is synchronous, has also measured the material evidence angle when measuring material evidence distance.

Example 2

A criminal investigation positioning device, referring to embodiment 1 and shown in fig. 3, which is different from embodiment 1 in that: the laser reflecting part 11 adopts a laser reflecting rod, and the laser reflecting rod is assisted by manpower when being positioned, namely, the laser reflecting rod is stabilized at a corresponding position by personnel when measuring distance.

By adopting the criminal investigation positioning device provided by the utility model, the limitation of selecting reference objects for many times in material evidence positioning can be broken through; by adopting the device provided by the utility model, the operation is very convenient and fast in the criminal investigation positioning process, after the measuring reference position is selected and the measuring point is determined, one person can finish the investigation positioning within ten seconds, which not only greatly improves the on-site investigation positioning efficiency and realizes the effect of rapid investigation, but also can save manpower and material resources and simultaneously improve the accuracy of material evidence positioning; the criminal investigation testing positioning device provided by the utility model takes the north-righting direction as a zero angle, and is matched with the convention of 'north-up and south-down' of the investigation recording plane schematic diagram, so that the recording mode is more intuitive, and the rapid analysis and accurate study and judgment are facilitated; furthermore, the utility model provides a criminal investigation positioner still has the advantage that stability, flexibility are good, is applicable to arbitrary on-the-spot investigation.

Claims

1. A criminal investigation testing positioner, includes angle scale (1), its characterized in that: the angle scale (1) is placed at a measurement reference position, a digital display angle scale and a laser range finder (5) are arranged on the angle scale (1), and a distance measurement light ray (6) emitted by the laser range finder (5) is superposed with an angle measurement line of the digital display angle scale; the positioning device further comprises a laser reflection part (11) matched with the laser range finder (5) for use, and the position of the laser reflection part (11) is a material evidence positioning point.

2. The criminal investigation positioning device of claim 1, wherein: the laser range finder (5) is positioned in the central area of the angle scale (1).

3. The criminal investigation positioning device of claim 2, wherein: the digital display angle scale comprises a reference scale (3) and a rotating scale (4), wherein the reference scale (3) points to zero scale on the angle scale (1), and the laser range finder (5) is fixed on the rotating scale (4) and can synchronously rotate along with the rotating scale (4).

4. The criminal investigation positioning device of claim 3, wherein: the zero scale on the angle scale (1) is positioned in the north direction, and the +/-180-degree scale on the angle scale (1) is positioned in the south direction.

5. The criminal investigation positioning device of claim 4, wherein: the rotating ruler (4) is positioned above the reference ruler (3), the ball (13) is arranged at the tail end close to the rotating ruler (4), and the ball (13) can roll on the surface of the angle scale (1) along with the rotation of the rotating ruler (4).

6. The criminal investigation positioning device of claim 5, wherein: the angle measuring line of the digital display angle ruler is superposed with the central line of the rotating ruler (4) in the length direction, and the angle reference line of the digital display angle ruler is superposed with the central line of the reference ruler (3) in the length direction.

7. The criminal investigation positioning device of claim 6, wherein: an indication arrow (12) is arranged at the middle line position of the end part of the rotating ruler (4).

8. The criminal investigation positioning device according to any of claims 1-6, wherein: the laser reflection part (11) comprises an adjustable support (7), and a laser reflection rod vertically penetrates through an operation table (8) of the adjustable support (7).

9. The criminal investigation positioning device of claim 8, wherein: the bottom of the laser reflection rod is conical; the laser reflection rod is connected to the operating platform (8) through a thread adjusting piece (9), and the thread adjusting piece (9) can be adjusted up and down along the operating platform (8).

10. The criminal investigation positioning device of claim 9, wherein: horizontal columns are respectively arranged on the angle scale (1) and the operating platform (8) of the adjustable bracket (7).