Tunnel vehicle detection device based on millimeter wave radar

Abstract

The utility model discloses a tunnel vehicle detection device based on millimeter-wave radar, which comprises a fixing frame and a camera, the fixing frame is rotatably mounted at the bottom of the camera, a connecting plate is fixedly mounted below the camera, and the millimeter-wave radar is fixedly mounted on the connecting plate. First connecting blocks are fixedly installed on the two sides of the surface of the camera, a fixing plate is slidably installed between the first connecting blocks, a scraper is fixedly installed on the fixing plate, a connecting frame is fixedly installed on the outer side of the millimeter microwave radar, a hydraulic rod is installed between the fixing plate and the connecting frame, and the hydraulic rod is controlled to stretch out and draw back. According to the visual sensor surface cleaning device, the fixing plate is driven to slide up and down between the two first connecting blocks, so that the scraping plate cleans the surface, the surface of the visual sensor is cleaned through the structure, shielding objects can be prevented from being attached to the surface of the visual sensor, the tedious process of manual cleaning is replaced, and meanwhile the detection precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel vehicle detection technical field, concretely is tunnel vehicle detection device based on millimeter wave radar. BACKGROUND

[0002] Tunnel is an important part of urban traffic and highway transportation, and the driving conditions of vehicles in the tunnel need to be monitored in real time, including basic information such as speed, direction, distance, and detailed data such as vehicle type and lane position.

[0003] Millimeter wave radar uses radio waves for detection and ranging, and its working frequency band is usually 30-300GHz, with high frequency and short wavelength, making millimeter wave radar have the characteristics of high precision and high resolution.

[0004] The tunnel vehicle detection device using millimeter wave radar can achieve high-precision vehicle monitoring, accurately identify the type, speed, lane position and other information of the vehicle, and also identify the license plate number of the vehicle, ensuring the stability and reliability of traffic monitoring, without the need for manual maintenance, and can operate stably for a long time, greatly reducing maintenance costs.

[0005] The tunnel vehicle detection device based on millimeter wave radar still needs a visual sensor in the camera to identify the type, color, license plate and other characteristics of the target, but there is no structure to solve the problem of the visual sensor being blocked. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing tunnel vehicle detection device based on millimeter wave radar for overcoming the above-mentioned defects in the prior art. According to the tunnel vehicle detection device based on millimeter wave radar of the utility model, it comprises a sign fixing frame, a camera, a fixing frame rotatably installed at the bottom of the camera, a connecting plate fixedly installed below the camera, and a millimeter microwave radar fixedly installed on the connecting plate.

[0007] A cleaning device is provided on the camera, which comprises a connecting block one fixedly installed on both sides of the surface of the camera. A scraping device is provided between the connecting blocks one, which comprises a fixed block rotatably installed at the bottom between the two connecting blocks one.

[0008] Preferably, a sliding groove is formed in the inner side of the two connecting blocks one, a fixed plate is installed between the two connecting blocks one, sliding blocks are fixedly installed at both ends of the fixed plate, the sliding blocks are in sliding connection with the sliding grooves, a scraper is fixedly installed on the inner side of the fixed plate, a connecting frame is fixedly installed on the outer side of the millimeter microwave radar, a first fixed rod is fixedly installed on the outer side of the fixed plate, a second fixed rod is fixedly installed on the connecting frame, and a hydraulic rod is installed on the first fixed rod and the second fixed rod.

[0009] Preferably, the scraper is made of silica gel material.

[0010] Preferably, an inclined plate is fixedly installed on the top of the connecting frame, and the inclined plate is triangular.

[0011] Preferably, a first pointed protrusion is fixedly installed on the top of the fixed block, a second pointed protrusion is fixedly installed on the bottom of the fixed block, a first baffle and a second baffle are fixedly installed between the two connecting blocks, the fixed block is located between the first baffle and the second baffle, and a certain distance is left between the fixed block and the surface of the camera.

[0012] The utility model discloses the beneficial effects are:

[0013] 1. Connecting block one is fixedly installed on the both sides of the surface of the camera, a fixed plate is slidingly installed between the inner sides of the two connecting blocks, a scraper is fixedly installed on the inner side of the fixed plate, a connecting frame is fixedly installed on the outer side of the millimeter microwave radar, a hydraulic rod is installed between the fixed plate and the connecting frame, the hydraulic rod is controlled to stretch out and draw back, the fixed plate is driven to slide up and down between the two connecting blocks, so that the scraper cleans the surface of the vision sensor, this structure completes the cleaning of the surface of the vision sensor, can also prevent the attachment of the shielding object on the surface of the vision sensor, replaces the tedious process of manual cleaning, and also improves the detection precision.

[0014] 2. The scraper is made of silica gel material, and this structure avoids the influence of the scraper on the vision sensor on the surface of the camera.

[0015] 3. An inclined plate is fixedly installed on the top of the connecting frame, and the inclined plate is triangular, so that the dust and foreign matters scraped down can slide from the device to the ground.

[0016] 4. The fixed block is rotatably installed between two of the connecting blocks, the pointed convex block one and the pointed convex block two are installed on the fixed block, the baffle one and the baffle two are fixedly installed between two of the connecting blocks, the hydraulic rod is controlled to retract, the fixed block is extruded downward by the scraper, the fixed block rotates around the center and abuts against the baffle one, the pointed convex block one scrapes the scraper, dust and foreign matters adhered to one side of the scraper are removed, the scraper is elastic and deformed when extruded, the fixed block does not hinder the movement of the scraper, the hydraulic rod is controlled to extend, the fixed block is extruded upward by the scraper, the fixed block rotates and abuts against the baffle two, the pointed convex block two scrapes the scraper, dust and foreign matters adhered to the other side of the scraper are removed, the structure can clean the visual sensor and the dust and foreign matters adhered to the scraper at the same time, and does not affect the cleaning effect of the visual sensor. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the first appearance schematic view of the utility model;

[0018] Figure 2 is the first cross section schematic view of the utility model;

[0019] Figure 3 is the A place enlarged schematic view of Figure 2 ;

[0020] Figure 4 is the B place enlarged schematic view of Figure 2 ;

[0021] Figure 5 is the second cross section schematic view of the utility model;

[0022] Figure 6 is the appearance schematic view of the scraping device;

[0023] Figure 7 is the C place enlarged schematic view of Figure 6 ;

[0024] Figure 8 is the cross section schematic view of the first mode of the scraping device;

[0025] Figure 9 is the D place enlarged schematic view of Figure 8 ;

[0026] Figure 10 is the cross section schematic view of the second mode of the scraping device;

[0027] In the figure: 1, fixed frame; 2, camera; 3, connecting plate; 4, millimeter microwave radar; 5, hydraulic rod; 6, connecting block one; 7, sliding groove; 8, fixed plate; 9, sliding block; 10, scraper; 11, connecting frame; 12, fixed rod one; 13, fixed rod two; 14, inclined plate; 15, fixed block; 16, baffle one; 17, baffle two; 18, pointed convex block one; 19, pointed convex block two. DETAILED DESCRIPTION

[0028] In order to make the purpose and advantages of the utility model more clear and obvious, the following will be combined with examples to specifically explain the utility model, and it should be understood that the following text is only used to describe the utility model of the tunnel vehicle detection device based on millimeter wave radar or several specific embodiments, and does not strictly limit the specific protection range requested by the utility model, such as in this text, the terms up and down and left and right are not limited to its strict geometric definition, but include the reasonable and inconsistent tolerance for machining or human error, and the specific features of the tunnel vehicle detection device based on millimeter wave radar will be explained in detail as follows:

[0029] Referring to Figures 1-10 According to the tunnel vehicle detection device based on millimeter wave radar of the embodiment of the utility model, it comprises a fixed frame 1, a camera 2, a connecting plate 3 is fixedly installed below the camera 2, and a millimeter microwave radar 4 is fixedly installed on the connecting plate 3, which is the conventional structure of the tunnel vehicle detection device based on millimeter wave radar.

[0030] At present, there is no structure that can solve the problem of visual sensor being blocked by foreign matter on the tunnel vehicle detection device based on millimeter wave radar, in order to solve this problem, the inventor considers setting a cleaning device on the camera 2.

[0031] The cleaning device comprises two connecting blocks 6 fixedly installed on both sides of the surface of the camera 2, a sliding groove 7 formed in the inner side of the two connecting blocks 6, a fixed plate 8 installed between the two connecting blocks 6, a sliding block 9 fixedly installed at both ends of the fixed plate 8 and in sliding connection with the sliding groove 7, a scraper 10 fixedly installed on the inner side of the fixed plate 8, a connecting frame 11 fixedly installed on the outer side of the millimeter microwave radar 4, a first fixed rod 12 fixedly installed on the outer side of the fixed plate 8, a second fixed rod 13 fixedly installed on the connecting frame 11, and a hydraulic rod 5 installed on the first fixed rod 12 and the second fixed rod 13.

[0032] Further, the scraper 10 is made of silica gel material, which avoids damage to the visual sensor on the surface of the camera 2.

[0033] Further, an inclined plate 14 is fixedly installed on the top of the connecting frame 11, which is triangular in shape and facilitates the sliding of dust and foreign matter scraped off from the device to the ground.

[0034] In addition, the dust and foreign matter scraped off is easy to accumulate on the device and stick to the scraper 10, which affects the next cleaning. In order to solve this problem, the inventor considers setting a scraping device between the two connecting blocks 6.

[0035] The scraping device comprises a fixed block 15 rotatably mounted at the bottom between the two connecting blocks 6, a pointed convex block 18 fixedly mounted at the top of the fixed block 15, a pointed convex block 19 fixedly mounted at the bottom of the fixed block 15, a baffle 16 and a baffle 17 fixedly mounted between the two connecting blocks 6, the fixed block 15 being located between the baffle 16 and the baffle 17, and a certain distance being left between the fixed block 15 and the surface of the camera 2; after the cleaning is completed, the hydraulic rod 5 is controlled to retract, the fixed block 15 is pressed downward by the scraper 10 driven by the fixed plate 8, the fixed block 15 is rotated to abut against the baffle 16, the pointed convex block 18 scrapes the scraper 10, and the dust and foreign matters adhered to one side of the scraper 10 are removed; the scraper 10 is elastic and deformed when pressed; the fixed block 15 does not hinder the movement of the scraper 10; the hydraulic rod 5 is controlled to extend, the fixed block 15 is pressed upward by the scraper 10, the fixed block 15 is rotated to abut against the baffle 17, the pointed convex block 19 scrapes the scraper 10, and the dust and foreign matters adhered to the other side of the scraper 10 are removed; the structure can clean the dust and foreign matters adhered to the scraper 10 while cleaning the vision sensor, and does not affect the cleaning effect of the vision sensor.

[0036] Those skilled in the art can clearly understand that various modifications can be made to the above embodiments without departing from the overall spirit and concept of the present application. All of the modifications fall within the scope of the present application. The protection scheme of the present application is subject to the appended claims of the present application.

Claims

1. A millimeter wave radar-based tunnel vehicle detection device, comprising a fixed frame (1), a camera (2), the fixed frame (1) being rotatably installed at the bottom of the camera (2), a connecting plate (3) being fixedly installed below the camera (2), and a millimeter wave radar (4) being fixedly installed on the connecting plate (3), characterized in that: The cleaning device is arranged on the camera (2), and comprises a connecting block I (6) fixedly arranged on both sides of the surface of the camera (2); a scraping device is arranged between the connecting block I (6), and the scraping device comprises a fixed block (15) rotatably arranged at the bottom between the two connecting block I (6).

2. The millimeter-wave radar-based tunnel vehicle detection apparatus according to claim 1, characterized by: A sliding groove (7) is formed in the inner side of the two connecting block I (6), a fixed plate (8) is arranged between the two connecting block I (6), sliding blocks (9) are fixedly arranged at both ends of the fixed plate (8), the sliding blocks (9) are slidably connected with the sliding groove (7), a scraping plate (10) is fixedly arranged at the inner side of the fixed plate (8), a connecting frame (11) is fixedly arranged at the outer side of the millimeter microwave radar (4), a fixed rod I (12) is fixedly arranged at the outer side of the fixed plate (8), a fixed rod II (13) is fixedly arranged on the connecting frame (11), and a hydraulic rod (5) is arranged on the fixed rod I (12) and the fixed rod II (13).

3. The millimeter-wave radar-based tunnel vehicle detection apparatus according to claim 2, characterized by: The scraping plate (10) is made of silica gel material.

4. The millimeter-wave radar-based tunnel vehicle detection apparatus according to claim 2, characterized by: An inclined plate (14) is fixedly arranged at the top of the connecting frame (11), and the inclined plate (14) is triangular.

5. The millimeter wave radar-based tunnel vehicle detection apparatus according to claim 1, characterized by: A pointed convex block I (18) is fixedly arranged at the top of the fixed block (15), a pointed convex block II (19) is fixedly arranged at the bottom of the fixed block (15), a baffle I (16) and a baffle II (17) are fixedly arranged between the two connecting block I (6), the fixed block (15) is located between the baffle I (16) and the baffle II (17), and a certain distance is left between the fixed block (15) and the surface of the camera (2).

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