Traffic flow section monitoring device based on point laser radar laser light curtain

Abstract

The utility model discloses a traffic flow section monitoring device based on a punctiform laser radar laser light curtain, which comprises a shell, a cover plate is rotatably mounted at the top end of the shell, a laser generator and a laser receiver are respectively mounted on two sides of the top end of the cover plate through supports, a partition plate is fixedly mounted on the inner side of the shell, and the partition plate is fixedly mounted on the outer side of the shell. A driving motor is installed on one side of the top end of the partition plate, one end of an output shaft of the driving motor movably penetrates through the partition plate and is fixedly connected with a driving gear, a rotating rod is rotatably installed in the middle of the partition plate through a bearing, and a driven gear is fixedly connected to the bottom end of the rotating rod. The cover plate drives the laser generator to rotate so that a laser curtain can be formed in the space, the range of the laser curtain can be expanded, when a laser beam irradiates a vehicle, the laser beam is reflected back by the vehicle, and the laser receiver receives the reflected laser beam and transmits received data to a background data processing system.

Description

Technical Field

[0001] The utility model relates to the technical field of traffic engineering, and in particular to a traffic flow section monitoring device based on a point-shaped laser radar laser light curtain. Background Art

[0002] At present, the main technical means used for traffic flow monitoring include millimeter-wave radar and video monitoring. However, millimeter-wave radar is relatively expensive, and video monitoring is greatly affected by lighting conditions. Therefore, it is of great significance to develop a low-cost and highly reliable traffic flow monitoring device. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a traffic flow section monitoring device based on a point-shaped laser radar laser light curtain.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A traffic flow section monitoring device based on a point-shaped laser radar laser light curtain comprises a shell, a cover plate is rotatably mounted on the top of the shell, a laser generator and a laser receiver are respectively mounted on both sides of the top of the cover plate through brackets, a partition is fixedly mounted on the inner side of the shell, a driving motor is mounted on one side of the top of the partition, one end of the driving motor output shaft movably passes through the partition and is fixedly connected to a driving gear, a rotating rod is rotatably mounted on the middle of the partition through a bearing, a driven gear is fixedly connected to the bottom end of the rotating rod, and the driven gear is meshed with the driving gear, and the top of the rotating rod is fixedly connected to the cover plate.

[0006] Preferably, a slot is provided in the middle of the bottom end of the cover plate, and the top head of the rotating rod is inserted into the inner side of the slot. A plurality of positioning screws are installed through the middle of the top end of the cover plate, and the bottom end of the positioning screw is threadedly connected to the head of the rotating rod.

[0007] Preferably, an annular groove is provided at the top of the shell, a plurality of balls are rollingly connected in the annular groove, and the balls are fitted with the bottom end of the cover plate.

[0008] Preferably, circuit boards are installed at the positions of the laser generator and the laser receiver respectively at the bottom of the cover plate, and the laser generator and the laser receiver are electrically connected to the corresponding circuit boards respectively. An electric slip ring is arranged on the outer side of the rotating rod, and the circuit board wires are connected to the external circuit through the electric slip ring.

[0009] Preferably, the outer wall of the shell is evenly provided with heat dissipation holes, and a dustproof net is installed at the positions of the outer wall of the shell corresponding to the heat dissipation holes.

[0010] Preferably, a mounting frame is fixedly sleeved on the bottom end of the outer side of the shell, and a plurality of mounting screws are installed through the edge of the mounting frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The device designed by the utility model can form a laser light curtain in space by driving the laser generator to rotate through the cover plate to expand its range. When the laser beam irradiates the vehicle, the laser beam is reflected back by the vehicle, and the laser receiver receives the reflected laser beam and transmits the received data to the background data processing system, thereby completing the monitoring of traffic flow information. The device has a simple structure, is easy to install and maintain, can monitor the traffic flow information of the road in real time, is insensitive to light, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more specifically and intuitively illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a schematic diagram of the structure proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the structure proposed by the utility model.

[0016] In the figure: 1. Shell; 2. Cover; 3. Bracket; 4. Laser generator; 5. Laser receiver; 6. Partition; 7. Driving motor; 8. Driving gear; 9. Rotating rod; 10. Driven gear; 11. Ball bearing; 12. Circuit board; 13. Electric slip ring; 14. Heat dissipation hole; 15. Dust net; 16. Mounting frame; 17. Mounting screw. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Reference Figure 1-2 A traffic flow section monitoring device based on a point-shaped laser radar laser light curtain comprises a shell 1, a cover plate 2 is rotatably mounted on the top of the shell 1, a laser generator 4 and a laser receiver 5 are respectively mounted on both sides of the top of the cover plate 2 through a bracket 3, a partition plate 6 is fixedly mounted on the inner side of the shell 1, a driving motor 7 is mounted on one side of the top of the partition plate 6, one end of the output shaft of the driving motor 7 movably passes through the partition plate 6 and is fixedly connected to a driving gear 8, a rotating rod 9 is rotatably mounted on the middle of the partition plate 6 through a bearing, a driven gear 10 is fixedly connected to the bottom of the rotating rod 9, and the driven gear 10 is meshed with the driving gear 8, and the top of the rotating rod 9 is fixedly connected to the cover plate 2;

[0019] By adopting the above technical solution, the diameter of the driven gear 10 is larger than that of the driving gear 8, so that the cover plate 2 can be driven to rotate at a slower speed through the driving motor 7. In actual application, the cover plate 2 rotates perpendicular to the ground. The laser generator 4 adopts a point laser device. During the rotation of the cover plate 2, the laser generator 4 forms a laser light curtain in space. When the laser beam irradiates the vehicle, the laser beam is reflected back by the vehicle, and the laser receiver 5 receives the reflected laser beam and transmits the received data to the background system.

[0020] A slot is provided in the middle of the bottom end of the cover plate 2, and the top head of the rotating rod 9 is inserted into the inner side of the slot. A plurality of positioning screws are installed through the middle of the top end of the cover plate 2, and the bottom ends of the positioning screws are threadedly connected with the head of the rotating rod 9;

[0021] By adopting the above technical solution, the rotating rod 9 and the cover plate 2 are fixed by the positioning screw, which is convenient for the later disassembly of the cover plate 2, thereby facilitating the maintenance of the device.

[0022] An annular groove is provided at the top of the housing 1, and a plurality of balls 11 are rollingly connected in the annular groove, and the balls 11 are in contact with the bottom end of the cover plate 2;

[0023] By adopting the above technical solution, the arrangement of the ball 11 is to reduce the friction between the cover plate 2 and the top of the shell 1. The cover plate 2 is in an inverted cylindrical shape, and the bottom end of its edge is wedge-shaped, and the bottom point is in contact with the outer wall of the shell 1, as shown in the figure below, thereby minimizing friction.

[0024] A circuit board 12 is installed at the bottom of the cover plate 2 at positions corresponding to the laser generator 4 and the laser receiver 5, and the laser generator 4 and the laser receiver 5 are electrically connected to the corresponding circuit board 12, respectively. An electric slip ring 13 is arranged on the outer side of the rotating rod 9, and the wire of the circuit board 12 is connected to the external circuit through the electric slip ring 13;

[0025] By adopting the above technical solution, the electric slip ring 13 is arranged to prevent the corresponding wires from getting entangled when the laser generator 4 and the laser receiver 5 rotate with the cover plate 2. The laser generator 4, the laser receiver 5 and the circuit board 12 are all introductions of the prior art. The circuit board 12 is provided with a data acquisition module of the prior art. After receiving the reflected laser beam, the received data will be transmitted to the background data processing system through the data acquisition module. The data processing system includes components such as a computer and a data acquisition card. The received data is processed by a software program. The data processing system determines whether there is a vehicle passing through the laser light curtain based on the received data, and calculates the flow information of the vehicles passing through the light curtain.

[0026] The outer wall of the housing 1 is evenly provided with heat dissipation holes 14, and a dustproof net 15 is installed at the position of the outer wall of the housing 1 corresponding to the heat dissipation holes 14;

[0027] By adopting the above technical solution, the heat dissipation hole 14 is set to prevent the temperature of the drive motor 7 from being too high when working inside the shell 1, thereby reducing its service life. The heat inside the shell 1 can be discharged in time through the heat dissipation hole 14, and the dustproof net 15 prevents dust from entering the shell 1.

[0028] A mounting frame 16 is fixedly sleeved on the bottom end of the outer side of the housing 1, and a plurality of mounting screws 17 are installed through the edge of the mounting frame 16;

[0029] By adopting the above technical solution, the mounting frame 16 and the mounting screws 17 facilitate the installation and fixation of the housing 1 .

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A traffic flow section monitoring device based on a point-shaped laser radar laser light curtain, comprising a housing (1), characterized in that: A cover plate (2) is rotatably mounted on the top of the shell (1), and a laser generator (4) and a laser receiver (5) are respectively mounted on both sides of the top of the cover plate (2) via a bracket (3). A partition plate (6) is fixedly mounted on the inner side of the shell (1), and a driving motor (7) is mounted on one side of the top of the partition plate (6). One end of the output shaft of the driving motor (7) movably passes through the partition plate (6) and is fixedly connected to a driving gear (8). A rotating rod (9) is rotatably mounted on the middle of the partition plate (6) via a bearing. A driven gear (10) is fixedly connected to the bottom of the rotating rod (9), and the driven gear (10) is meshed with the driving gear (8). The top of the rotating rod (9) is fixedly connected to the cover plate (2).

2. The traffic flow section monitoring device based on a point-shaped laser radar laser light curtain according to claim 1 is characterized in that: A notch is provided in the middle of the bottom end of the cover plate (2), and the top end head of the rotating rod (9) is inserted into the inner side of the notch. A plurality of positioning screws are installed through the middle of the top end of the cover plate (2), and the bottom ends of the positioning screws are threadedly connected to the head of the rotating rod (9).

3. The traffic flow section monitoring device based on a point-shaped laser radar laser light curtain according to claim 1 is characterized in that: An annular groove is provided at the top of the housing (1), a plurality of balls (11) are rollingly connected in the annular groove, and the balls (11) are in contact with the bottom end of the cover plate (2).

4. The traffic flow section monitoring device based on a point-shaped laser radar laser light curtain according to claim 1 is characterized in that: A circuit board (12) is installed at the bottom end of the cover plate (2) at positions corresponding to the laser generator (4) and the laser receiver (5), and the laser generator (4) and the laser receiver (5) are electrically connected to the corresponding circuit board (12), respectively. An electric slip ring (13) is arranged on the outside of the rotating rod (9), and the wire of the circuit board (12) is connected to an external circuit through the electric slip ring (13).

5. The traffic flow section monitoring device based on a point-shaped laser radar laser light curtain according to claim 1 is characterized in that: The outer wall of the shell (1) is evenly provided with heat dissipation holes (14), and a dustproof net (15) is installed at positions of the outer wall of the shell (1) corresponding to the heat dissipation holes (14).

6. The traffic flow section monitoring device based on a point-shaped laser radar laser light curtain according to claim 1 is characterized in that: A mounting frame (16) is fixedly sleeved on the bottom outer end of the shell (1), and a plurality of mounting screws (17) are installed through the edge of the mounting frame (16).

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