KR20120094998A - Device for aligning radar for vehicle and aligning method using the same - Google Patents

Abstract

PURPOSE: A vehicle radar arrangement apparatus and method are provided to improve reliability by accurately and simply arranging vehicle radar. CONSTITUTION: A vehicle radar arrangement apparatus comprises a reflection plate(110), an inspection stand(120), and a beam pointer(162). The reflection plate is attached to each center portion of a front wheel or a rear wheel of a vehicle. The inspection stand measures a distance between the reflection plates attached to both sides of the vehicle. The inspection stand measures whether the reflection plates accurately face the front side of the vehicle or not. The beam pointer is attached to radar and radiates beam in a direction of the radar.

Description

Device for Aligning Radar for Vehicle and Aligning Method Using The Same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle radar, and more particularly, to a vehicle radar alignment device and an alignment method for aligning a position and a direction of a vehicle radar.

In recent years, automobiles are an essential commodity in modern life, and their use is increasing, and functions that were not available in the past are being added one after another.

The vehicle radar is also designed to implement a recently added function, and it is automatically fixed while maintaining a constant distance from the vehicle in front of luxury vehicles by measuring whether there is an obstacle in the direction of vehicle movement and the distance to the vehicle ahead. Applications have been attempted for driving auto cruise control and systems that automatically decelerate and stop in the event of an accident.

On the other hand, such a vehicle radar must be positioned to radiate and receive radar radio waves in the correct direction for accurate functioning, otherwise errors in distance measurement with the vehicle and obstacles in front may lead to fatal accidents during operation. .

Therefore, when manufacturing at the manufacturing plant, the alignment between the center point of the vehicle and the radar should be made, as well as the alignment of the radar may be misaligned due to road impact and accidents during use, even after leaving the factory.

Therefore, there is a need to develop an alignment device for accurately aligning the vehicle radar.

The present invention is to solve the above problems, to provide a vehicle radar alignment apparatus and an alignment method that can achieve the alignment of the vehicle radar as a simpler and less expensive equipment to solve the problem.

In order to solve the above problems, according to an embodiment of the present invention, the reflector is mounted on each center of the front or rear wheels of the vehicle, respectively, measured by measuring the distance with each reflector provided on both sides of the vehicle Whether the distance is equal to the front of the vehicle, it measures whether it is facing the front of the vehicle accurately, and checks whether the radar is looking at the correct position at the correct position.It is mounted on the radar mounted on the front side of the vehicle and the direction in which the radar is facing. There is provided a vehicle radar alignment apparatus comprising a beam pointer for irradiating a beam.

The inspection table is mounted to the frame, the left and right sides of the frame to face the front of the vehicle, a pair of distance measurer is provided to measure the distance to the reflector plate mounted on both wheels of the vehicle, the frame is mounted on the frame And a central reflector provided to face the radar installed in the vehicle, and a center meter arranged to face the reference point of the vehicle.

The range finder may be provided to be movable up and down along the frame.

The frame may be rotatably provided in the horizontal direction.

The central measuring unit and the central reflector may be provided to be movable left and right along the frame.

The center reflector may be marked with a target which is a point at which the beam irradiated from the beam pointer when the vehicle is aligned with the distance meter, the center meter, and the center reflector and the radar is aligned to a normal position.

And, according to the type of the vehicle to be aligned may be detachably mounted so that the central reflector marked with the target, which is the point to be irradiated beam pointer is mounted.

The central reflector may be a corner reflector.

The radar is provided above or below the license plate mount of the vehicle,

A bracket for supporting the upper or lower side of the license plate mounting bracket with the vehicle body may be further provided so that the license plate mounting bracket is not bent by air pressure while driving the vehicle.

And, according to another embodiment of the present invention, the vertical alignment step of adjusting the position of the inspection table so that the distance between the left reflector measured in the left distance meter and the right reflector measured in the right distance meter is the same, and the central measuring device A center alignment step of adjusting the position of the central reflector such that the center is aligned with a center point of the vehicle, and a radar position alignment step of adjusting the position and angle of the radar so that the beam pointer provided on the radar of the vehicle accurately irradiates the target of the center reflector. Disclosed is a vehicle radar alignment method comprising a.

The radar wave emitted from the radar may further include a tuning step of measuring a signal reflected from the central reflector and returning it to set the reference direction of the radar to electronically align the radar wave.

According to the radar alignment device and alignment method for a vehicle of the present invention has the following effects.

First, the vehicle radar can be easily and accurately aligned to improve the reliability of the vehicle radar, and the alignment can be more convenient and faster.

Second, since the configuration of the radar alignment device for a vehicle is simple, there is an advantage that the manufacturing cost is low.

Third, when the radar is aligned to the normal position for each vehicle, the position of the target, which is the point where the beam irradiated from the beam pointer shines, may be different. Since the reflector is detachably provided to the frame, the reflector can be commonly applied to various models, thereby improving the efficiency of alignment.

Fourth, since the support plate is further provided so that the license plate mounting plate equipped with the vehicle radar is not shaken or bent by air pressure while the vehicle is driving at high speed, the radar measurement direction is not shaken even during high-speed driving, so that the error does not occur and the reliability is improved. have.

1 is a view showing a state in which the reflector of the vehicle radar alignment device of the present invention mounted on the rear wheel of the vehicle;
2 is a perspective view showing an inspection table of the radar alignment device for a vehicle of the present invention;
3 is an enlarged view of a portion of a surface to which a corner reflector is applied to the central reflector of FIG. 2;
Figure 4 is a side view showing the license plate mounting bracket of the radar alignment device for a vehicle of the present invention;
Figure 5 is a flow chart illustrating a vehicle radar alignment method of the present invention.
Figure 6 is a plan view from above of a state where an inspection table of the radar alignment device for a vehicle of the present invention is located on the front of the vehicle;
7 is a plan view from above of a state in which the vehicle radar alignment device of the present invention is aligned with the vehicle;
FIG. 8 is a front view illustrating the central reflector of FIG. 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

The radar alignment device for a vehicle according to the exemplary embodiment of the present invention may include a reflector 110, an inspection table 120, and a beam pointer 162, as shown in FIGS. 1 and 2.

The reflecting plate 110 is provided to be mounted to the central portion of both sides of the front wheel or the rear wheel of the vehicle to be aligned with the radar. In more detail, it can be made to be mounted to the hub portion of the center that is the axis of rotation of the wheel. In the present embodiment will be described by taking an example that is mounted on both sides of the rear wheel 12 as an example.

In addition, the inspection table 120 measures the distance with each reflecting plate 110 provided on both sides of the vehicle to determine whether the distance is the same to measure whether or not exactly facing the front of the vehicle. It is a component that checks whether the vehicle's radar is looking at the correct position.

In addition, the beam pointer 162 is detachably mounted to the radar 160 mounted on the front of the vehicle, and the beam pointer 162 is configured to irradiate a beam in a direction toward the radar 160, and thus the radar 160 It is a component that allows us to know the direction of the heading. In the present invention, the beam pointer 162 will be described using an example of a laser pointer.

Meanwhile, as illustrated in FIG. 2, the inspection table may include the frame 130, the distance measuring units 142 and 144, the central reflector 110, and the central measuring unit 148.

The frame 130 is a portion constituting the skeleton of the examination table 120, may be made of a post 132 provided in the vertical direction, and the arm 134 extending in both sides in the horizontal direction from the post 132. .

Of course, the post may be supported by the base 136 supporting the bottom surface, and may be made to rotate left and right in the horizontal direction with respect to the longitudinal direction.

In addition, the arm 134 is provided to be capable of lifting up and down along the post 132. This is to adjust the distance measurers 142 and 144 to be mounted on the arm 134 to have the same height as the reflector 110 mounted to the wheel of the vehicle.

Both ends of the arm 134 may be provided with a left rangefinder 142 and a right rangefinder 144, respectively. The left distance measurer 142 and the right distance measurer 144 may measure a distance by measuring a radio wave or light coming back by shooting a radio wave or light onto the reflector 110. In the present embodiment, the application of the laser distance measuring method will be described as an example. However, the present invention is not limited thereto, and other distance measuring methods may be applied.

Although not shown, each of the distance measuring units 142 and 144 may measure each of the distance measuring units 142 and 144 such that the left distance measuring unit 142 and the right distance measuring unit 144 measure the same points of the respective reflecting plates 110. A laser beam pointer (not shown) indicating a direction to which the head is directed is provided, and the reflection points 110 provided on both sides of the vehicle indicate the points to be illuminated by the laser beam pointers provided in the range finders 142 and 144. It may be. At this time, it is preferable that the points to be illuminated by the laser beam pointers displayed on the reflecting plate 110 are displayed at the same points of both reflecting plates 110.

Of course, the distance meter is coupled to the wheel of the vehicle, the reflector may be provided on the inspection table.

The position measuring unit 148 may be adjusted to be aligned with the center point of the vehicle 10. That is, the centimeter 148 may move along the post 132 of the frame 130 and move side to side along the arm 134.

Of course, even if the portion where the center measuring unit 148 is aligned is not a center point, if there is a reference point that can be specified in common for each vehicle type, it may be made to be aligned with the reference point. The central measuring unit 148 may be a laser measuring device capable of measuring direction and distance, or may be a laser beam pointer.

The central reflector 110 is a component in which the beam pointer 162 attached to the radar 160 of the vehicle is illuminated. The center reflector 110 is aligned with the center meter 148 so as to coincide with the center point of the vehicle, and the target 149 is a point to which the laser beam pointer 162 should shine when the radar 160 is correctly aligned. ) May be displayed.

Of course, even if the target 149 is not displayed, the laser beam pointer 162 should be measured when the radar 160 is properly aligned through the relative position with the central reflector 110. You might know.

Therefore, the centimeter 148 and the central reflector 110 should be fixed without moving. In the present embodiment will be described with an example that the central measuring unit 148 is provided at the central point of the central reflector 110.

In addition, since the relative position between the center point or a specific reference point and the radar may be different for each vehicle type, a plurality of the central reflector 110 may be prepared differently marked the point of the target 149 for each vehicle, such as the central reflector 110 may be detachably coupled to the frame 130 according to the vehicle to be aligned.

In addition, a corner reflector 147 may be applied to the central reflector 110. As shown in FIG. 3, the corner reflector 147 is a trihedral structure having a unique optical characteristic in which all light or radio waves incident into the effectivw aperture are reflected back to the incident direction itself regardless of the angle of incidence. It is composed of three mutually orthogonal surfaces and has a shape corresponding to one corner of the cube to increase the radar cross section (RCS) to increase the reflection of the reflector.

On the other hand, in general, the vehicle radar 160 is located in the front of the vehicle so as not to be covered by obstacles, for this purpose it may be mounted in the vicinity of the license plate located in the front of the vehicle. In addition, the license plate is generally mounted to the license plate mounting 170, as shown in Figure 4, the vehicle radar 160 is mounted on the upper or lower plate of the license plate mounting 170. Can be.

However, in general, the license plate and the license plate mounting plate 170 is made of a flat surface rather than a streamline type, and thus may vibrate or bend by air pressure when the vehicle is traveling at high speed. As described above, when the license plate mounting plate 170 is bent, an error may occur because the radar 160 cannot measure an accurate point.

Thus, as shown in Figure 4, the bracket 172 for supporting the upper or lower side with the vehicle radar 160 of the license plate mounting bracket with respect to the vehicle body toward the vehicle body from the rear of the license plate mounting plate It may be provided.

Hereinafter, a vehicle radar alignment method using the vehicle radar alignment device made as described above will be described.

As shown in FIG. 5, the vehicle radar alignment method according to the present invention may include a vertical alignment step S110, a central alignment step S120, and a radar position alignment step S130.

First, as shown in FIG. 6, the reflective plates 110 are mounted on both sides of the front wheel or the rear wheel of the vehicle, respectively. Then, the inspection table 120 is located on the front side of the vehicle 10.

Then, the vertical alignment step S110 is performed.

In the vertical alignment step (S110), whether the inspection table 120 correctly faces the front of the vehicle 10, that is, the center of the vehicle 10 and the arm 134 of the frame 130 are in contact with each other. This step is to align vertically.

The distance d1 measured from the left distance measurer 142 to the reflector 110 of the left wheel of the vehicle is compared with the distance d2 measured from the right distance measurer 144 to the reflector 110 of the right wheel of the vehicle. It can be seen whether d1 and d2 are the same. That is, if d1 and d2 are different, since the arm 134 of the frame 130 is not perpendicular to the vehicle, the post 132 may be rotated and aligned so that the d1 and d2 are the same.

In addition, as illustrated in FIG. 7, the center alignment step S120 is to adjust the position of the center reflector 110 such that the center meter 148 is aligned with the reference point of the vehicle. In the present embodiment, the reference point at which the centimeter 148 is aligned is described as an example of the center point of the vehicle 10. That is, adjusting the position of the center measurer 148 such that the point indicated by the laser beam pointer 162 of the center measurer 148 indicates the center point of the vehicle.

8, the laser beam pointer 162 provided on the radar 160 of the vehicle 10 includes the target 149 of the central reflector 110. In order to accurately point to the radar position and angle of the fine alignment. That is, when the alignment of the radar 160 is disturbed, since the portion 164 projected by the laser beam pointer 162 illuminates a portion other than the target 149, the beam is adjusted by adjusting the position and angle of the radar. The portion illuminated by the pointer coincides with the target 149.

Mechanical alignment of the vehicle radar may be achieved through the vertical alignment step S110, the central alignment step S120, and the radar position alignment step S130 as described above.

Next, a tuning step (S140) for achieving an electronic alignment of the vehicle radar may be further performed.

This is a step of setting a direction to be a reference point of the radar 160, and is to set a reference point of the radar. In general, the reference point of the radar may be set as the reference point in the direction indicated by the laser beam pointer 162, that is, the direction toward the target 149 of the central reflector 110, and the reference point may be set according to a person skilled in the art. You can set it differently.

At this time, if the central reflector is formed in the shape of the corner reflector 147, it is easy to measure the incident angle and the reflected angle of the radar wave, it is possible to more effectively align the vehicle radar.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

110: reflector 120: inspection table
132: post 134: cancer
136: base 142: left rangefinder
144: right range finder 146: center reflector
147: corner reflector 148: center meter
149: target 160: radar
162: beam pointer S110: vertical alignment step
S120: center alignment step S130: radar position alignment step
S140: tuning step

Claims (11)

Reflecting plates respectively mounted to each center of the front or rear wheels on both sides of the vehicle;
The distance between each reflecting plate provided on both sides of the vehicle is measured to determine whether the measured distance is equal to the front of the vehicle, and whether the radar is looking at the correct position at the correct position. Inspection table made;
A beam pointer mounted to a radar mounted on a front side of a vehicle and irradiating a beam in a direction toward the radar;
Radar alignment device for a vehicle comprising a. The method of claim 1,
The inspection table,
frame;
A pair of distance measurers mounted on the left and right sides of the frame and positioned to face the front of the vehicle, the pair of distance measuring instruments being configured to measure a distance from the reflecting plates mounted on both wheels of the vehicle;
A central reflector mounted on the frame and provided to face the radar installed in the vehicle;
A central meter aligned to face the reference point of the vehicle
Radar alignment device for a vehicle comprising a. The method of claim 2,
The distance measuring device is a radar alignment device for a vehicle, characterized in that provided to be moved up and down along the frame. The method of claim 2,
The frame is a radar alignment device for a vehicle, characterized in that provided in the horizontal direction rotatable. The method of claim 2,
The center measuring device and the central reflector is provided with a radar alignment apparatus for a vehicle, characterized in that it is provided to be movable left and right along the frame. The method of claim 2,
The center reflector is characterized in that the target is a point that the beam is irradiated from the beam pointer when the radar is aligned to the normal position when the vehicle is aligned with the distance meter, the central meter, the central reflector accurately characterized Radar alignment device for vehicles. The method of claim 6,
The radar alignment device for a vehicle, characterized in that the detachable is provided so that the central reflector marked with the target that is the point that the beam pointer is to be irradiated according to the type of the vehicle to be mounted. The method of claim 2,
And the center reflector is a corner reflector. The method of claim 1,
The radar is provided above or below the license plate mount of the vehicle,
And a bracket for supporting an upper side or a lower side of the license plate mount with respect to the vehicle body such that the license plate mount is not bent by air pressure while the vehicle is running. A vertical alignment step of adjusting the position of the inspection table such that the distance between the left reflector measured by the left distance measurer and the right reflector measured by the right distance measurer is the same;
A center alignment step of adjusting a position of the center reflector such that a center meter is aligned with a center point of the vehicle;
Radar position alignment step of adjusting the position and angle of the radar so that the beam pointer provided on the radar of the vehicle accurately irradiates the target of the central reflector;
Vehicle radar alignment method comprising a. The method of claim 10,
A tuning step of electronically aligning the radar wave radiated by the radar by measuring a signal reflected from the central reflector and setting a reference direction of the radar;
Vehicle radar alignment method characterized in that it further comprises.

Images