An automatic brake device based on laser and millimeter wave double radar detection

Abstract

The utility model relates to automatic brake technical field, and disclose a kind of automatic brake device based on laser, millimeter wave double radar detection, including the guide wheel pedestal being installed on the vehicle body and the guide wheel being connected on guide wheel pedestal, and the installation base plate is fixedly installed on the vehicle body, guide wheel pedestal is located the outside of installation base plate, and the outer wall of installation base plate is fixedly connected with the side plate on both sides, and second sliding slot is opened in side plate.The utility model can be first fixed on the vehicle body by the cooperation of installation base plate, second sliding slot and L type slider etc. component, then, guide wheel pedestal can be slid on installation base plate along the direction of sliding slot, realize the flexible fine adjustment of position, improve installation convenience.After guide wheel pedestal is adjusted to ideal position, it is locked from the outside of installation base plate by the cooperation of threaded rod and nut, so that the position of guide wheel pedestal can be reliably fixed, and its stability is ensured during use without displacement.

Description

Technical Field

[0001] This utility model relates to the field of automatic braking technology, specifically an automatic braking device based on laser and millimeter-wave dual radar detection. Background Technology

[0002] While the widespread use of vehicles has greatly facilitated people's daily lives, it has also brought many traffic safety hazards. To improve driving safety, modern intelligent vehicles are generally equipped with various sensors such as LiDAR and cameras to gain the ability to perceive their surroundings.

[0003] From the perspective of the diffraction limit, lidar, due to its extremely short operating wavelength (typically around 1 micrometer), has significantly higher spatial resolution compared to 77GHz millimeter-wave radar (wavelength approximately 3.9 millimeters). The wavelength difference is about 4000 times, enabling lidar to achieve more precise obstacle identification and environmental modeling. However, precisely because of its short wavelength, lidar signals are easily interfered with or even severely attenuated in complex weather conditions such as rain, snow, fog, and dust, or in environments with obstructions, leading to a significant decrease in detection performance.

[0004] In contrast, millimeter-wave radar has a longer wavelength, resulting in stronger penetration capabilities and superior all-weather operation. Therefore, lidar and millimeter-wave radar are currently commonly integrated into autonomous driving systems. LiDAR provides short-range, high-precision environmental perception, while millimeter-wave radar ensures system robustness in adverse weather or low-visibility conditions. By coordinating the work of these two radars and combining information from multiple sensors such as cameras, the overall detection performance and environmental adaptability of autonomous vehicles can be significantly improved.

[0005] Based on the multi-sensor fusion perception mentioned above, when the system detects a potential obstacle on the driving path, it will send a warning signal to the autonomous driving control unit in real time and trigger the automatic emergency braking (AEB) function to quickly and automatically start the braking system, thereby effectively avoiding or mitigating the occurrence of collision accidents and improving driving safety.

[0006] For example, the automatic braking device disclosed in patent publication number CN214523753U belongs to the field of automatic braking technology. It includes an obstacle detector for detecting obstructions and a controller for processing the detection signal of the obstacle detector. The controller is signal-connected to a drive component, which includes a drive motor and a winding component. The winding component has a connecting rope at its upper limit. The drive motor can control the winding component to tighten the connecting rope. The other end of the connecting rope is connected to a braking component for realizing the braking action.

[0007] While the aforementioned device solves the problem of automatic braking, it still has the following drawbacks: the fixing handle is rigidly connected to the vehicle body via bolts, and it is used to install the pulley for the guide rope. However, during actual assembly, the position of the pulley must precisely match the movement trajectory of the pedal. If the initial installation position of the fixing handle is off, it cannot be adjusted using the existing structure; it can only be disassembled, re-drilled in the vehicle body, and reinstalled, which is not only cumbersome but may also damage the vehicle structure. Therefore, the current fixing handle lacks an adjustment mechanism after installation, making it difficult to fine-tune the pulley position, causing inconvenience for assembly and subsequent maintenance. Utility Model Content

[0008] To address the shortcomings of existing technologies, the purpose of this invention is to provide an automatic braking device based on dual detection by laser and millimeter-wave radar, which makes the guide wheel in the automatic braking system easy to fine-tune after installation.

[0009] To achieve the above objectives, this utility model provides the following technical solution: an automatic braking device based on laser and millimeter-wave dual radar detection, comprising a guide wheel base mounted on a vehicle body and a guide wheel connected to the guide wheel base. A mounting base is fixedly mounted on the vehicle body, the guide wheel base is located on the outside of the mounting base, and side plates are fixedly connected to both sides of the outer wall of the mounting base. A second sliding groove is provided in the side plate, and an L-shaped slider is slidably connected in the second sliding groove. A threaded rod is fixedly connected to the top of the L-shaped slider, and a nut is threaded to the outer side of the threaded rod after it passes through the guide wheel base.

[0010] Furthermore, the guide wheel base has waist-shaped grooves on both sides, and the threaded rod passes through the waist-shaped grooves and is slidably connected to them.

[0011] Furthermore, a first groove is provided on the outer wall of the mounting base plate, and a T-shaped slider is slidably connected in the first groove, the width of the T-shaped slider being smaller than the width of the first groove.

[0012] Furthermore, the bottom surface of the T-shaped slider is embedded with a ball bearing, which is slidably connected to the inner wall of the first groove.

[0013] Furthermore, both ends of the first and second slides are provided with through grooves.

[0014] Furthermore, the top surface of the side plate is provided with scale lines, and the outer wall of the guide wheel base is fixedly connected with arrow markings corresponding to the scale lines.

[0015] Furthermore, the mounting base plate has two sets of mounting holes diagonally provided, and screws are inserted into the mounting holes. The screws pass through one end of the mounting holes and are threaded into the vehicle body.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes the coordinated operation of components such as the mounting base, the second sliding groove, and the L-shaped slider to first fix the mounting base to the vehicle body. Subsequently, the guide wheel base can slide along the sliding groove on the mounting base, enabling flexible and fine-tuning of its position and improving installation convenience. After the guide wheel base is adjusted to the ideal position, it is locked from the outside of the mounting base by the cooperation of the threaded rod and nut, thereby reliably fixing the position of the guide wheel base and ensuring its stability during use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a three-dimensional structural diagram of the present invention in its fully unfolded state; Figure 3 This is a three-dimensional structural diagram of the mounting base and guide wheel base of this utility model in their unfolded state; Figure 4 This is a three-dimensional structural diagram of the L-shaped slider and T-shaped slider of this utility model.

[0018] In the diagram: 1. Mounting base plate; 11. First slide groove; 12. Mounting hole; 2. Guide wheel; 3. Vehicle body; 4. Side plate; 41. Second slide groove; 42. Scale line; 5. Guide wheel base; 51. Waist-shaped groove; 52. Arrow mark; 6. Screw; 7. Nut; 8. L-shaped slider; 81. Threaded rod; 9. T-shaped slider; 91. Ball bearing. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] like Figures 1 to 4 As shown, an automatic braking device based on laser and millimeter-wave dual radar detection includes a guide wheel base 5 mounted on a vehicle body 3 and a guide wheel 2 connected to the guide wheel base 5. A mounting base 1 is fixedly mounted on the vehicle body 3. The guide wheel base 5 is located on the outside of the mounting base 1. Side plates 4 are fixedly connected to both sides of the outer wall of the mounting base 1. A second sliding groove 41 is opened in the side plate 4. An L-shaped slider 8 is slidably connected in the second sliding groove 41. A threaded rod 81 is fixedly connected to the top of the L-shaped slider 8. A nut 7 is threaded to the outer side of the threaded rod 81 after it passes through the guide wheel base 5.

[0021] like Figure 1As shown, the automatic braking device based on laser and millimeter-wave dual radar detection in this utility model is structurally similar to existing automatic braking devices, such as the automatic braking device disclosed in patent publication number CN214523753U. The main improvement of this utility model is that it makes the guide wheel in the automatic brake easy to fine-tune after installation. Figures 1 to 4 As shown, the automatic braking device based on laser and millimeter-wave dual radar detection in this utility model triggers an automatic braking program when the vehicle is in motion, after the laser radar and millimeter-wave radar detect an obstacle. Subsequently, the controller controls the drive motor of the automatic brake to drive the pull rope to pull the pedal, thereby realizing automatic braking (all of the above are common knowledge in the prior art). When the pull rope is pulled, the guide wheel 2 plays a role in limiting and guiding the pull rope.

[0022] When the guide wheel 2 is initially installed with the vehicle body 3, the mounting base 1 can be fixedly installed with the vehicle body 3 first. At this time, the guide wheel base 5 and the guide wheel 2 slide into the second slide groove 41 through the L-shaped slider 8. According to the required position, slide the guide wheel base 5, which drives the threaded rod 81 and the L-shaped slider 8 to slide in the second slide groove 41 to realize the guide wheel base 5 sliding and fine adjustment on the outside of the mounting base 1, so as to realize the function of easy adjustment of the guide wheel base 5. After adjustment, tighten the nuts 7 on the outside of the two threaded rods 81 to lock the threaded rods 81, so that the L-shaped slider 8 fits and is fastened to the second slide groove 41, thus fixing the guide wheel base 5.

[0023] By using the mounting base 1, the second sliding groove 41, and the L-shaped slider 8, the mounting base 1 can be installed on the vehicle body 3 first. After installation, the guide wheel base 5 is slid on the mounting base 1 to achieve fine-tuning of its position, making installation convenient. The guide wheel base 5 is locked on the outside of the mounting base 1 by the cooperation of the nut 7 and the threaded rod 81, so that the position of the guide wheel base 5 is fixed.

[0024] As a preferred technical solution of this utility model, the guide wheel base 5 has waist-shaped grooves 51 on both sides, and the threaded rod 81 passes through the waist-shaped grooves 51 and is slidably connected to them.

[0025] Specifically, after the guide wheel base 5 is adjusted in the vertical position of the mounting base 1, the threaded rod 81 can be moved left and right in the waist-shaped groove 51 by moving the guide wheel base 5 left and right, so that the guide wheel base 5 can be adjusted up and down and left and right after installation.

[0026] As a preferred embodiment of the present invention, the outer wall of the mounting base plate 1 is provided with a first sliding groove 11, and a T-shaped slider 9 is slidably connected in the first sliding groove 11. The width of the T-shaped slider 9 is smaller than the width of the first sliding groove 11.

[0027] Specifically, in order to make the guide wheel base 5 stable when moving, the guide wheel base 5 will drive the T-shaped slider 9 to slide in the first slide groove 11 when moving. It should be noted that the T-shaped slider 9 is smaller than the first slide groove 11, so as to ensure that when the guide wheel base 5 moves left and right to adjust, it will drive the T-shaped slider 9 to move left and right in the first slide groove 11.

[0028] As a preferred embodiment of this invention, the bottom surface of the T-shaped slider 9 is embedded with a ball bearing 91, which is slidably connected to the inner wall of the first groove 11. The ball bearing 91 facilitates smoother sliding of the T-shaped slider 9 in the up-down and left-right directions.

[0029] As a preferred embodiment of this utility model, both ends of the first slide groove 11 and the second slide groove 41 are through grooves. By setting the first slide groove 11 and the second slide groove 41 as through grooves, it is convenient to detach the L-shaped slider 8 and the T-shaped slider 9 from the mounting base plate 1, and to facilitate the installation of the mounting base plate 1 and the vehicle body 3.

[0030] As a preferred embodiment of this utility model, the top surface of the side plate 4 is provided with a scale line 42, and the outer wall of the guide wheel base 5 is fixedly connected with an arrow mark 52 corresponding to the scale line 42. When the guide wheel base 5 moves up and down for adjustment, the arrow mark 52 moves accordingly, corresponding to the scale line 42, making it convenient to observe the adjustment distance.

[0031] As a preferred embodiment of this utility model, the mounting base plate 1 has two sets of mounting holes 12 diagonally provided. Screws 6 pass through the mounting holes 12 and are threadedly connected to the vehicle body 3 after passing through one end of the mounting hole 12. The mounting holes 12 and screws 6 facilitate the fixed installation of the mounting base plate 1 and the vehicle body 3.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic braking device based on laser and millimeter-wave dual radar detection, comprising a guide wheel base (5) mounted on a vehicle body (3) and a guide wheel (2) connected to the guide wheel base (5), characterized in that, A mounting base plate (1) is fixedly installed on the vehicle body (3). The guide wheel base (5) is located on the outside of the mounting base plate (1). Side plates (4) are fixedly connected to both sides of the outer wall of the mounting base plate (1). A second sliding groove (41) is opened in the side plate (4). An L-shaped slider (8) is slidably connected in the second sliding groove (41). A threaded rod (81) is fixedly connected to the top of the L-shaped slider (8). A nut (7) is threaded to the outer side of the threaded rod (81) after it passes through the guide wheel base (5).

2. The automatic braking device based on laser and millimeter-wave dual radar detection according to claim 1, characterized in that, The guide wheel base (5) has waist-shaped grooves (51) on both sides. The threaded rod (81) passes through the waist-shaped grooves (51) and is slidably connected to them.

3. The automatic braking device based on laser and millimeter-wave dual radar detection according to claim 2, characterized in that, The mounting base plate (1) has a first groove (11) on its outer wall. A T-shaped slider (9) is slidably connected in the first groove (11). The width of the T-shaped slider (9) is smaller than the width of the first groove (11).

4. The automatic braking device based on laser and millimeter-wave dual radar detection according to claim 3, characterized in that, The bottom surface of the T-shaped slider (9) is embedded with a ball (91), and the ball (91) is slidably connected to the inner wall of the first groove (11).

5. An automatic braking device based on laser and millimeter-wave dual radar detection according to claim 4, characterized in that, Both ends of the first slide (11) and the second slide (41) are through grooves.

6. An automatic braking device based on laser and millimeter-wave dual radar detection according to claim 5, characterized in that, The top surface of the side plate (4) is provided with scale lines (42), and the outer wall of the guide wheel base (5) is fixedly connected with arrow marks (52) corresponding to the scale lines (42).

7. An automatic braking device based on laser and millimeter-wave dual radar detection according to claim 6, characterized in that, The mounting base plate (1) has two sets of mounting holes (12) diagonally. Screws (6) are inserted into the mounting holes (12). After passing through one end of the mounting hole (12), the screws (6) are threaded to the vehicle body (3).

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