Alignment system for radar

Abstract

The present application provides a radar alignment system capable of suppressing misjudgment and correctly performing alignment. The radar alignment system includes a radar device that radiates an electric wave, a target device disposed on one side relative to the radar device, and a slope structure disposed on a floor between the radar device and the target device. The radar device receives a reflected wave of the electric wave reflected by the target device to adjust a detection axis of the radar device, and the slope structure reflects the electric wave toward the floor in a direction deviated from the target device.

Description

Technical Field

[0001] This invention relates to a radar alignment system. Background Technology

[0002] In existing technology, radar can be installed in vehicles to detect the presence or absence of targets by emitting radio waves in a specific detection area. For example, such radar is used in adaptive cruise control systems (ACC systems), traffic jam tracking systems, and vehicle-to-vehicle alert systems. However, when radar used in these systems is installed on a vehicle, if the radar's detection axis is not correctly pointed in a pre-set direction, the system may erroneously detect oncoming vehicles in adjacent lanes, or the system may fail to detect vehicles ahead because it only detects road surfaces, overpasses, and signs, resulting in system malfunction. Therefore, during the installation process of installing radar on a vehicle, an alignment procedure must be performed to adjust the radar's detection axis.

[0003] Figure 1 This is a schematic diagram of a radar alignment system in the prior art. Please refer to it. Figure 1 As a radar alignment system, the radar 50 mounted on the vehicle (not shown) can be set to face the target 60. The radio waves emitted by the radar 50 (as shown by arrow L11) are reflected by the target 60, which serves as a reference reflector. The position of the target 60 is determined based on the reflected waves (as shown by arrow L12). The detection axis of the radar 50 is adjusted based on the position of the target 60, thereby performing the radar 50 alignment procedure.

[0004] However, in such an alignment system, when the radio waves emitted by radar 50 are reflected on the floor 70 where the vehicle is located (as shown by arrows L13 and L14), and then reflected again from the floor 70 back to radar 50 after hitting the target 60 (as shown by arrows L15 and L16), the position of the target 60 may be misjudged as being on the extension line of this reflected wave (as shown by arrow L16), for example, misjudged as being on... Figure 1 The virtual misidentified object 80 also contains a target. As a result, the radar's alignment system may adjust the radar 50's detection axis from the preset detection axis A1 to the detection axis A2 located between the target 60 and the virtual misidentified object 80, thus failing to achieve proper alignment.

[0005] In the prior art, as shown in Patent Document 1, there is a disclosed technique that uses an electromagnetic wave absorber installed on the floor to absorb electromagnetic waves propagating towards the floor, thereby suppressing misjudgments caused by reflected waves from the floor. However, electromagnetic wave absorbers installed on the floor may obstruct vehicle passage and deteriorate due to water adhering to them from mufflers and other sources when vehicles pass, gradually reducing the accuracy of the radar alignment system. Therefore, it is desirable to use a method that does not deteriorate to suppress misjudgments.

[0006] [Existing Technical Documents]

[0007] [Patent Literature]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 2003-240837 Summary of the Invention

[0009] This invention provides a radar alignment system that can suppress misjudgments and perform alignment correctly.

[0010] The present invention provides a radar alignment system, comprising: a radar device that radiates radio waves; a target device disposed on one side relative to the radar device; and a ramp structure disposed on the floor between the radar device and the target device, wherein the radar device receives the reflected waves of the radio waves after they are reflected by the target device to adjust the detection axis of the radar device, and the ramp structure reflects the radio waves toward the floor in a direction away from the target device.

[0011] In one embodiment of the invention, the slope structure is formed as a downward slope from the radar device toward the target device.

[0012] In one embodiment of the present invention, the slope structure is positioned between the radar device and the target device, and spans a first range to define its position and size. The first range is the distribution range of reflection points where the electromagnetic waves emitted by the radar device form reflected waves on the floor.

[0013] In one embodiment of the invention, the slope structure is configured to avoid a second range located between the first range and the radar device in order to define its position and size.

[0014] In one embodiment of the present invention, the slope structure is provided with a metal reflective surface.

[0015] Based on the above, in the radar alignment system of the present invention, the radar device radiates radio waves, the target device is positioned on one side relative to the radar device, and a ramp structure is provided on the floor between the radar device and the target device. The radar device receives the reflected waves after they are reflected from the target device to adjust its detection axis, and the ramp structure reflects the radio waves towards the floor in a direction away from the target device. In this way, it is possible to suppress false alarms caused by reflected waves hitting the target device and then being reflected back from the floor to the radar device, thus enabling accurate setting of the detection axis position. Accordingly, the radar alignment system of the present invention can suppress false alarms and perform accurate alignment.

[0016] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a radar alignment system in the prior art;

[0018] Figure 2 This is a schematic diagram of a radar alignment system according to an embodiment of the present invention;

[0019] Figure 3A and Figure 3B yes Figure 2 The diagram shows the setup of the slope structure used in the radar alignment system.

[0020] Explanation of reference numerals in the attached figures:

[0021] 50: Radar;

[0022] 60: Target object;

[0023] 70, 102: Floor;

[0024] 80: Misjudged object;

[0025] 100: Radar alignment system;

[0026] 110: Radar equipment;

[0027] 120: Target device;

[0028] 130, 130A: Slope structure;

[0029] 132: Reflecting surface;

[0030] A1, A2, A3: Detection axes;

[0031] L11, L12, L13, L14, L15, L16, L21, L22, L23, L24, L31, L32, L33, L34, L41, L42, L43, L44: Arrows;

[0032] P1, P2: Reflection points;

[0033] R1: First range;

[0034] R2: Second range. Detailed Implementation

[0035] The present invention will now be described in detail with reference to exemplary embodiments thereof, examples of which are illustrated in the accompanying drawings. Wherein, Figure 2 This is a schematic diagram of a radar alignment system according to an embodiment of the present invention. Figure 3A and Figure 3B yes Figure 2 The diagram shows the setup of the slope structure used in the radar alignment system. The following will be accompanied by... Figure 2 , Figure 3A and Figure 3B This invention describes the specific structural composition of the radar alignment system 100 in this embodiment and its application in the alignment process. However, the radar alignment system 100 in this embodiment is only one example, and the present invention is not limited thereto.

[0036] First, please refer to Figure 2 In this embodiment, the radar alignment system 100 includes a radar device 110, a target device 120, and a ramp structure 130. The radar device 110 can be applied to vehicle adaptive cruise control systems, traffic jam tracking systems, vehicle-to-vehicle alert systems, etc., but is not limited thereto. Therefore, to ensure the accuracy of the radar device 110, an alignment procedure must be performed on the radar device 110 during the mounting process on the vehicle (not shown) to adjust its detection axis. That is, for the radar device 110 mounted on the vehicle, an alignment procedure is performed via the target device 120, and the ramp structure 130 is used to suppress misjudgments, thereby correctly pointing the detection axis (e.g., detection axis A3) of the radar device 110 in a predetermined direction.

[0037] Specifically, in this embodiment, radar device 110 is mounted on a vehicle (not shown) to emit radio waves. Target device 120 is positioned on one side relative to radar device 110. That is, as a radar alignment system 100, radar device 110 mounted on the vehicle and target device 120, serving as a reference reflector, are positioned facing each other. Thus, the radio waves emitted by radar device 110 (as shown by arrow L21) are reflected by target device 120, and the position of target device 120 is determined based on the reflected waves (as shown by arrow L22). In other words, radar device 110 receives the reflected waves (as shown by arrow L22) of the radio waves (as shown by arrow L21) after reflection by target device 120 to determine the position of target device 120, and adjusts the detection axis A3 of radar device 110 based on the position of target device 120, thereby performing the alignment procedure of radar device 110.

[0038] Furthermore, in this embodiment, as Figure 2 As shown, the ramp structure 130 is installed on the floor 102 between the radar device 110 and the target device 120. When the radar device 110 emits radio waves (as shown by arrow L23) toward the floor 102 where the vehicle is located, the ramp structure 130 reflects the radio waves (as shown by arrow L23) toward the floor 102 in a direction away from the target device 120. That is, the ramp structure 130 forms part of the floor 102 and has a slope to change the reflection direction of the radio waves (as shown by arrow L23), causing the radio waves (as shown by arrow L23) toward the floor 102 to be reflected in a direction away from the target device 120. In this way, the reflected waves (as shown by arrow L24) formed by the ramp structure 130 on the floor 102 changing the reflection direction will not hit the target device 120. It can suppress the reflected waves formed by the radio waves toward the floor 102 hitting the target device 120 and then being reflected back to the radar device 110 by the floor 102, thus preventing false judgments. Therefore, the position of the detection axis A3 can be set correctly. Accordingly, the radar alignment system 100 can suppress misjudgments and perform alignment correctly.

[0039] To effectively reflect radio waves (such as arrow L23) directed toward the floor 102 away from the target device 120, a slope structure 130 is configured. The slope structure 130 is a sloping structure. The sloping aspect means that the reflecting surface 132 of the slope structure 130 is not parallel to the floor 102. Therefore, the slope structure 130 is formed as a downward slope from the radar device 110 toward the target device 120 (such as arrow L23). Figure 2 (as shown), but it can also be formed as an upward slope (not shown) from the target device 120 toward the radar device 110, and the present invention is not limited thereto.

[0040] Furthermore, in this embodiment, the radar alignment system 100 is a system that performs an alignment procedure on the radar device 110 along the mounting line on the vehicle. That is, the radar device 110 is mounted on the vehicle, and there are fewer obstructions in the direction away from the radar device 110 and the vehicle on which the radar device 110 is mounted (i.e., in front of the vehicle's mounting line), while the target device 120 is positioned in front of the vehicle's mounting line in a location with fewer obstructions. Thus, the alignment procedure is performed based on the reflected wave (such as arrow L22) of the radar device 110 on the target device 120.

[0041] In this case, as long as a slope structure with a reflective surface that is not parallel to the floor 102 is provided on the floor 102, regardless of whether it is a downward slope (such as... Figure 2 Whether it is a ramp (not shown) or an upward slope (not shown), it can reflect the radio waves toward the floor 102 in a direction away from the target device 120. However, if an upward slope (not shown) is used as the slope structure (not shown) that is formed from the target device 120 toward the radar device 110, it is also necessary to consider whether the reflected waves will be reflected again by the ceiling or walls, etc., causing misjudgment.

[0042] Accordingly, in this embodiment, if the following is adopted... Figure 2 The slope structure 130 shown, i.e., the slope structure 130 is formed as a downward slope from the radar device 110 towards the target device 120, will reflect the radio waves (such as arrow L23) towards the floor 102 in a direction away from the target device 120 and away from the radar device 110, and further in a direction with fewer obstructions, such as in front of the vehicle's mounting line. This reduces the risk of misjudgment caused by the reflected waves being reflected again by the ceiling or walls, and simplifies the setting of the specific dimensions of the slope structure 130 (such as slope angle, length, height), as the influencing factors are reduced. Therefore, it is preferable that the slope structure 130 is formed as a downward slope from the radar device 110 towards the target device 120, but this is not a limitation.

[0043] Furthermore, in this embodiment, the slope structure 130 is used to reflect radio waves toward the floor 102 in a direction away from the target device 120. However, when the slope structure is set in certain areas of the floor 102, there is still a possibility that the reflected waves from the radar device 110 on the slope structure may be reflected back from the floor 102 to the radar device 110 after hitting the target device 120, resulting in misjudgment. Therefore, in order to effectively reflect radio waves toward the floor 102 in a direction away from the target device 120, in addition to the orientation of the slope structure 130, the position and size of the slope structure 130 are also set accordingly.

[0044] For example, such as Figure 3AAs shown, the slope structure 130 is positioned between the radar device 110 and the target device 120, and its position and size are defined by spanning a first range R1. The first range R1 is, for example, the distribution range (e.g., the area between reflection points P1 and P2) of the electromagnetic waves emitted by the radar device 110 (e.g., arrows L31 and L32 shown in dashed lines) that form reflected waves (e.g., arrows L33 and L34 shown in dashed lines) on the floor 102. Thus, the first range R1 can be considered the necessary range for the slope structure 130; that is, the slope structure 130 preferably covers the first range R1. Therefore, the length of the slope structure 130 is preferably equal to or greater than the distance of the first range R1 (e.g., the area between reflection points P1 and P2). Figure 3A As shown in the figure, its specific dimensions (such as slope angle, length, height) can be adjusted according to requirements. Furthermore, the specific dimensions (such as distance) of the first range R1 can also be adjusted according to requirements.

[0045] Correspondingly, such as Figure 3B As shown, when the slope structure 130A, indicated by the dashed line, is positioned near the rear (i.e., near the radar device 110), the reflected waves (i.e., arrows L43 and L44) from the radar device 110 (as shown by the dashed arrows L41 and L42) after being reflected on the slope structure 130A may strike the target device 120 and then reflect back to the radar device 110, resulting in a misjudgment. Therefore, preferably, the slope structure 130 is positioned and sized to avoid the second range R2 (i.e., the rearward position) located between the first range R1 and the radar device 110. That is, instead of adopting a structure like the slope structure 130A that is positioned in the second range R2, it is preferable to adopt a structure like the slope structure 130 that avoids the second range R2. Thus, the second range R2 can be considered as the prohibited range for the slope structure 130, meaning that the slope structure 130 is preferably positioned to avoid the second range R2. The specific dimensions (such as distance) of the second range R2 can also be adjusted according to requirements.

[0046] Therefore, in this embodiment, the combination Figure 3A The setting of the first range R1 and Figure 3B The setting of the second range R2 determines the position and dimensions of the slope structure 130. The second range R2 is located behind the first range R1, but is not limited to being adjacent to each other (e.g., ...). Figure 3B As shown, there is a gap between the first range R1 and the second range R2. Therefore, the slope structure 130 covering the first range R1 can extend beyond the rear of the first range R1, as long as it avoids the second range R2 (e.g., Figure 3B As shown). In this way, radio waves directed toward floor 102 (such as...) can be effectively blocked. Figure 2Arrow L23) is reflected in a direction away from the target device 120, thereby suppressing the reflected wave on the floor 102 from being reflected back to the radar device 110 after hitting the target device 120, thus preventing misjudgment. However, the above-described means of setting the slope structure 130 is only one example, and the present invention is not limited thereto.

[0047] In addition to setting the direction, position, and dimensions (such as slope angle, length, and height) of the slope structure 130, the reflective surface 132 of the slope structure 130 can also be set. For example, in this embodiment, the slope structure 130 is provided with a metal reflective surface as the reflective surface 132, and the reflective surface 132 is preferably a flat surface without any bumps or depressions. Thus, the entire slope structure 130 can be made of metal, or only the reflective surface 132 of the slope structure 130 can be made of metal. Metal reflective surfaces have the advantages of good reflectivity and low cost. Furthermore, by forming the reflective surface 132 as a flat surface without any bumps or depressions, the reflection direction of the reflected waves can be set more accurately, effectively reflecting electromagnetic waves (such as...) directed towards the floor 102. Figure 2 Arrow L23 reflects in a direction away from the target device 120. However, the material of the slope structure 130 described above is only one example, and the present invention is not limited thereto.

[0048] Furthermore, although this embodiment is described using the example of aligning the radar device 110 with the radar alignment system 100 after it has been installed on a vehicle, the present invention is not limited thereto. That is, the above description regarding the vehicle can be applied to objects equipped with radar devices, and the radar device can be aligned with the radar device via the radar alignment system 100.

[0049] In summary, in the radar alignment system of the present invention, a radar device radiates radio waves, a target device is positioned on one side relative to the radar device, and a ramp structure is disposed on the floor between the radar device and the target device. The radar device receives reflected waves from the target device to adjust its detection axis, and the ramp structure reflects radio waves toward the floor in a direction away from the target device. Preferably, the ramp structure is formed as a downward slope from the radar device toward the target device, and the ramp structure has a metallic reflective surface. Furthermore, the ramp structure is positioned and sized to be located between the radar device and the target device and spanning a first range, and is positioned and sized to avoid a second range located between the first range and the radar device. This suppresses misjudgment caused by reflected waves from the floor hitting the target device and then reflecting back toward the radar device, thus enabling accurate setting of the detection axis position. Accordingly, the radar alignment system of the present invention can suppress misjudgments and perform accurate alignment.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radar alignment system, characterized in that, include: Radar devices emit radio waves; The target device is positioned on one side relative to the radar device; as well as A sloping structure is installed on the floor between the radar device and the target device. The radar device receives the reflected wave after the radio wave is reflected by the target device, in order to adjust the detection axis of the radar device. The slope structure is positioned between the radar device and the target device, spanning a first range to define its location and size, and is positioned to avoid a second range located between the first range and the radar device to define its location and size, thus reflecting radio waves directed toward the floor in a direction away from the target device. The reflective surface of the slope structure is a flat plane without any bumps or depressions. The first range is the distribution range of reflection points where the electromagnetic waves emitted by the radar device form reflected waves on the floor, and The length of the slope structure is equal to or greater than the distance of the first range.

2. The radar alignment system according to claim 1, characterized in that, The slope structure is formed as a downward slope from the radar device toward the target device.

3. The radar alignment system according to claim 1 or 2, characterized in that, The slope structure is equipped with a metal reflective surface.

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