Vehicle speed detection device based on radar

Abstract

The utility model discloses a radar-based vehicle speed detection device, and relates to the technical field of vehicle speed measurement, the radar-based vehicle speed detection device comprises a base, a radar velocimeter, an inclination angle adjusting assembly and a rotating ring, the inclination angle adjusting assembly and the rotating ring are additionally arranged on the base, the detection end face of the radar velocimeter faces the ground, and the radar velocimeter and a vehicle chassis are installed in an inclination angle shape; the device has the technical advantages that the radar velocimeter is additionally arranged at the bottom of the vehicle body, and the radar velocimeter is used for detecting the ground to recognize the vehicle speed in real time; through the inclination angle adjusting assembly, a gear meshing principle is utilized, and the base is taken as a reference, so that the rotating ring which is additionally provided with the radar velocimeter in the side direction rotates in the circumferential direction, and then inclination angle adjustment of the radar velocimeter is realized; when the radar velocimeter is not used, the radar velocimeter can be stored in the open type cambered surface structure of the fixed support, and the lateral positioning effect is provided for storage of the radar velocimeter through arc pushing of the arc-shaped baffle.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle speed measurement, and in particular to a radar-based vehicle speed detection device. Background Art

[0002] A car's inherent speed detection mechanism typically involves one or more sensors connected to the vehicle's electronic control system to monitor and calculate the vehicle's speed in real time. Traditional vehicle speed detection methods rely primarily on built-in sensors, such as the primary speed sensor, typically located near the transmission or drive shaft. The speed sensor can be a magnetic induction sensor, a Hall effect sensor, or a photoelectric sensor. It calculates vehicle speed by detecting the rotation of the tires or drive shaft. When the tires rotate, the sensor generates a signal proportional to the rotational speed, which is then converted into a speed reading. The speed measured by these built-in sensors is limited by the accuracy of the vehicle's internal mechanical systems and the influence of external conditions. Tire wear and changes in air pressure can cause the speed measurement to deviate from the actual vehicle speed.

[0003] To overcome these limitations, radar technology used in traffic monitoring to detect vehicle speed can be transplanted and applied. However, traditional radar speed measurement equipment is usually fixed on the side of the road or in the air, rather than integrated into the vehicle itself. If radar technology is applied to the vehicle environment to enable it to continuously monitor vehicle speed, it will face a series of challenges. For example, how to accurately adjust the installation angle of the radar on the bottom of the vehicle, thereby improving the accuracy of radar speed measurement; and radar probes are usually protruding outwards. During the mass production and factory stages, the safety of the radar probes themselves when not in use must also be considered. Utility Model Content

[0004] This device provides a vehicle speed detection device based on radar, and the specific implementation is as follows:

[0005] A radar-based vehicle speed detection device, comprising:

[0006] A base and a radar speed meter mounted on a vehicle via the base, wherein the detection end of the radar speed meter faces the ground and is mounted at an angle to the vehicle chassis;

[0007] The inclination adjustment component and the rotating ring are installed on the base, the inclination adjustment component meshes with the rotating ring, the radar speed meter installed at the end of the rotating ring is inclination adjusted by the inclination adjustment component, and an angle locking structure is provided between the inclination adjustment component and the base.

[0008] Based on the above technical solution, through the above radar speed gun installation and adjustment mechanism, not only the precise installation of the radar speed gun is ensured, but also the flexible adjustment of its angle is achieved. The mutual engagement between gears is used to transmit power and motion, thereby achieving precise angle adjustment function. The base serves as the support point and reference coordinate system of the entire structure, ensuring the position stability and measurement accuracy of the radar speed gun during the adjustment process. The radar speed gun is installed on a rotating ring, which is the intermediate link connecting the radar speed gun and the inclination adjustment component. It can realize circumferential rotation under the drive of the inclination adjustment component. This design not only enables the radar speed gun to adjust the angle around the vertical or horizontal axis, but also ensures stability during the adjustment process, avoiding the influence of unnecessary vibration on the measurement results.

[0009] Preferably, a fixed support is integrated on the base, and the fixed support is provided with an arcuate sliding groove, which is slidably connected to the rotating ring.

[0010] Preferably, the arcuate sliding groove is arranged in a staggered shape, the width of the groove bottom is greater than the width of the groove top, and the rotating ring is slidably arranged at the groove bottom.

[0011] Preferably, the base is also integrated with an axial support, with measuring partitions and positioning partitions installed at both ends; the inclination adjustment component includes a coaxial gear and a rotating shaft, the rotating shaft is sleeved in the axial support, and its two ends are rotatably connected to the measuring partition and the positioning partition.

[0012] Preferably, the fixed support and the arcuate sliding groove are laterally guided, and the rotating ring includes an arcuate limiting slide plate, the outer peripheral surface of which is provided with an arcuate outer tooth plate along the circumferential direction, and the arcuate outer tooth plate is engaged with the gear.

[0013] Preferably, the arc-shaped limiting slide plate is co-centrically connected to an arc-shaped baffle plate, and an end portion thereof is provided with a third holder for laterally clamping the radar speed meter.

[0014] Based on the above technical solution, in order to ensure that the beam of the radar speed gun can hit the ground during radar speed measurement, the radar module needs to be installed at an angle with a required tilt angle of 10° to 30°. At the same time, in order to obtain better results, the installation height of the radar speed gun should be controlled as much as possible between 0.4 and 0.7 meters from the ground; the third bracket is arc-shaped and passes through the semicircular groove. A clamping ring can be provided at the end of the radar speed gun, which can be clamped and securely installed on the third bracket by tightening it.

[0015] Preferably, a drop is provided between the measuring partition and the positioning partition and the end face of the shaft support, and a pointer and a limit hole plate are provided laterally on the rotating shaft within the drop range.

[0016] Preferably, the measuring partition is centered on the rotating shaft and is circumferentially provided with scale lines that match the pointer.

[0017] Preferably, the positioning partition is centered on the rotating shaft and is provided with limiting holes in the circumference, and the limiting hole plate and the limiting holes are locked in position by a latch.

[0018] Based on the above technical solution, the rotation of the rotating shaft and the rotating ring can be achieved by rotating the limiting hole plate, wherein the pointer rotates synchronously, and the inclination angle of the radar speed meter can be read in real time using the scale line, making the inclination angle more accurate.

[0019] Preferably, the outer side of the fixed support is set as an open arc surface structure along the arc direction of the sliding groove, and the first and second clamping seats for storing the radar speed meter are provided at both ends of the arc surface, and the arc-shaped baffle laterally abuts against the side of the stored radar speed meter.

[0020] Preferably, the arc-shaped limiting slide plate is co-centrically connected to an arc-shaped baffle plate, and an end portion thereof is provided with a third holder for laterally clamping the radar speed meter.

[0021] Based on the above technical solution, when the radar speed gun is not in use, it can be stored in the open arc surface structure of the fixed support, and the arc-shaped push-out of the arc-shaped baffle is used to provide a lateral positioning effect for the storage of the radar speed gun, so that the overall volume occupied when it is stored for use is smaller.

[0022] In summary, this application has the following beneficial technical effects:

[0023] 1. This utility model installs a radar speed meter on the bottom of the vehicle body, and uses the radar speed meter to detect the ground to identify the vehicle speed in real time;

[0024] 2. This utility model uses the principle of gear meshing through the inclination adjustment assembly to cause the rotating ring with the radar speed meter installed laterally to rotate circumferentially with the base as the reference, thereby achieving inclination adjustment of the radar speed meter;

[0025] 3. The utility model has a simple structure. When the radar speed meter is not in use, it can be stored in the open curved surface structure of the fixed support, and the curved extension of the curved baffle provides a lateral positioning effect for the storage of the radar speed meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 This is a schematic diagram of the installation position of the utility model in a vehicle;

[0028] Figure 3 This is a schematic diagram of the explosion structure of the utility model Figure 1 ;

[0029] Figure 4 This is a cross-sectional view of the structure of the utility model. Figure 1;

[0030] Figure 5 This is a cross-sectional view of the structure of the utility model. Figure 2 ;

[0031] Figure 6 This is a schematic diagram of the explosion structure of the utility model Figure 2 ;

[0032] Figure 7 This is a schematic diagram of the explosion structure of the utility model Figure 2 .

[0033] Description of reference numerals:

[0034] 1. Base, 2. Radar speedometer, 3. Inclination adjustment assembly, 4. Rotating ring, 5. First card holder, 6. Measuring partition, 7. Positioning partition, 8. Latch, 9. Second card holder, 10. Vehicle,

[0035] 101. Mounting plate, 102. Shaft support, 103. Fixed support, 104. Arc sliding groove,

[0036] 301, gear, 302, shaft, 303, pointer, 304, limit plate,

[0037] 401, arc-shaped baffle, 402, arc-shaped outer tooth plate, 403, third holder, 404, arc-shaped limiting slide plate. DETAILED DESCRIPTION

[0038] The following describes the specific implementation of the utility model with reference to the accompanying drawings and embodiments:

[0039] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present utility model. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose that can be achieved by the present utility model.

[0040] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0041] The following is combined with Figures 1-7 This application is described in further detail.

[0042] The embodiment of the present application discloses a radar-based vehicle speed detection device.

[0043] Example 1

[0044] Reference Figures 1 to 3 This embodiment discloses a radar-based vehicle speed detection device, comprising a base 1, a radar speed meter 2 mounted on a vehicle 10 via the base 1, a tilt adjustment assembly 3 and a rotating ring 4 attached to the base 1. The detection end of the radar speed meter 2 faces the ground and is mounted at an angle to the chassis of the vehicle 10. The tilt adjustment assembly 3 meshes with the rotating ring 4. In this structure, the radar speed meter 2 mounted at the end of the rotating ring 4 is tilted by the tilt adjustment assembly 3. The top of the base 1 is preferably mounted to the rear of the chassis of the vehicle 10 via a mounting plate 101 and bolts.

[0045] A fixed support 103 is integrated on the base 1, and an arcuate sliding groove 104 is opened on the fixed support 103. The arcuate sliding groove 104 is slidably connected to the rotating ring 4. In this structure, the arcuate sliding groove 104 is set to be staggered, and the width of the groove bottom is greater than the width of the groove top. The rotating ring 4 is slidably set at the groove bottom.

[0046] The base 1 is also integrated with an axial support 102, with measuring partitions 6 and positioning partitions 7 installed at both ends. The inclination adjustment assembly 3 includes a coaxial gear 301 and a rotating shaft 302. The rotating shaft 302 is sleeved in the axial support 102, and its two ends are rotatably connected to the measuring partition 6 and the positioning partition 7. In this structure, the fixed support 103 and the arc-shaped sliding groove 104 are laterally guided. The rotating ring 4 includes an arc-shaped limiting slide 404, and its outer peripheral surface is circumferentially arranged as an arc-shaped external tooth plate 402, and the arc-shaped external tooth plate 402 is engaged with the gear 301.

[0047] Example 2

[0048] Reference Figures 1 to 6 Based on the above embodiment, this embodiment also discloses a radar-based vehicle speed detection device, in which a drop is provided between the measuring partition 6 and the positioning partition 7 and the end face of the shaft support 102, and a pointer 303 and a limiting orifice plate 304 are provided laterally on the rotating shaft 302 within the drop range. In this structure, the measuring partition 6 is centered on the rotating shaft 302, and a scale line is provided circumferentially to match the pointer 303.

[0049] The positioning partition 7 is centered on the rotating shaft 302 and is provided with limiting holes in the circumference. The limiting hole plate 304 and the limiting hole are locked in position by the pin 8. In this structure, a dust cover can be provided on the end face of the central axis support 102 close to the limiting hole plate 304. After opening the dust cover, the angle of the limiting hole plate 304 can be adjusted.

[0050] The specific implementation process is: the radar speedometer 2 in storage is taken down, the mounting plate 101 is mounted on the tail of the vehicle 10 chassis; at this time, the radar speedometer 2 is mounted on the third clamping seat 403, and then the installer lies on the bottom of the vehicle 10; the end of the pointer 303 in the shaft through the support 102 is visually observed, the limiting hole plate 304 is hand-tightened, and then the circumferential rotation of the radar speedometer 2 in the vertical plane is realized; after the angle is appropriate, the bolt 8 is inserted into the limiting hole in the limiting hole plate 304 and the corresponding limiting partition plate 7.

[0051] Embodiment 3

[0052] With reference to Figure 7 Based on the above embodiment, the embodiment also discloses a radar-based vehicle speed detection device, an arc-shaped limiting sliding plate 404 is connected with an arc-shaped baffle 401 at a common center, an end of the arc-shaped limiting sliding plate 404 is provided with a third clamping seat 403 for laterally clamping the radar speedometer 2, and the arc-shaped limiting sliding plate 404 and the arc-shaped baffle 401 can form a non-integer circle structure in the structure, so that the radar speedometer 2 can be laterally clamped when being used and installed.

[0053] The outer side of the fixed support 103 is provided with an open arc surface structure along the direction of the arc sliding groove 104, two ends of the arc surface are provided with a first clamping seat 5 and a second clamping seat 9 for storing the radar speedometer 2, and the arc-shaped baffle 401 laterally abuts against the side of the radar speedometer 2 in storage, and in the structure, the radar speedometer 2 is laterally clamped with the first clamping seat 5 and the second clamping seat 9, and the radar speedometer 2 in storage and installation is laterally packaged in the open arc surface structure through the arc surface of the arc-shaped baffle 401.

[0054] Many other changes and modifications can be made to the present application without departing from the spirit and scope of the application. It should be understood that the present application is not limited to a particular embodiment, and the scope of the present application is defined by the appended claims.

Claims

1. A vehicle speed detection device based on radar, characterized in that: include: A base (1) and a radar speed meter (2) mounted on a vehicle (10) via the base (1), wherein the detection end of the radar speed meter (2) faces the ground and is mounted at an angle to the chassis of the vehicle (10); An inclination adjustment component (3) and a rotating ring (4) are mounted on the base (1); the inclination adjustment component (3) meshes with the rotating ring (4); the radar speed meter (2) mounted on the end of the rotating ring (4) is inclinated by the inclination adjustment component (3); and an angle locking structure is provided between the inclination adjustment component (3) and the base (1).

2. The radar-based vehicle speed detection device according to claim 1, characterized in that: A fixed support (103) is integrated on the base (1), and an arcuate sliding groove (104) is provided on the fixed support (103), and the arcuate sliding groove (104) is slidably connected to the rotating ring (4).

3. The radar-based vehicle speed detection device according to claim 2, characterized in that: The arcuate sliding groove (104) is arranged in a staggered shape, the width of the groove bottom is greater than the width of the groove top, and the rotating ring (4) is slidably arranged at the groove bottom.

4. The radar-based vehicle speed detection device according to claim 2, characterized in that: The base (1) is also integrated with a shaft support (102), and a measuring partition (6) and a positioning partition (7) are installed at both ends of the shaft support. The tilt angle adjustment assembly (3) comprises a coaxially integrated gear (301) and a rotating shaft (302); the rotating shaft (302) is sleeved in the shaft support (102), and its two ends are rotatably connected to the measuring partition (6) and the positioning partition (7).

5. The radar-based vehicle speed detection device according to claim 4, characterized in that: The fixed support (103) and the arcuate sliding groove (104) are laterally connected, and the rotating ring (4) includes an arcuate limiting slide plate (404), the outer peripheral surface of which is provided as an arcuate outer tooth plate (402) along the circumferential direction, and the arcuate outer tooth plate (402) is engaged with the gear (301).

6. The radar-based vehicle speed detection device according to claim 5, characterized in that: A drop is provided between the measuring partition (6) and the positioning partition (7) and the end surface of the shaft support (102), and a pointer (303) and a position-limiting orifice plate (304) are provided laterally on the rotating shaft (302) within the drop range.

7. The radar-based vehicle speed detection device according to claim 6, characterized in that: The measuring partition (6) is centered on the rotating shaft (302) and is provided with scale lines in the circumference thereof that match the pointer (303).

8. The radar-based vehicle speed detection device according to claim 6, characterized in that: The positioning partition (7) is centered on the rotating shaft (302) and is provided with a limiting hole in the circumferential direction. The limiting hole plate (304) and the limiting hole are locked in position by a latch (8).

9. The radar-based vehicle speed detection device according to claim 5, characterized in that: The arc-shaped limiting slide plate (404) is co-centrically connected to an arc-shaped baffle plate (401), and an end portion thereof is provided with a third clamping seat (403) for laterally clamping the radar speed meter (2).

10. The radar-based vehicle speed detection device according to claim 9, characterized in that: The outer side of the fixed support (103) is set as an open arc surface structure along the direction of the arc sliding groove (104), and the first card seat (5) and the second card seat (9) for storing the radar speed meter (2) are provided at both ends of the arc surface, and the arc baffle (401) laterally abuts against the side of the stored radar speed meter (2).

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