JP6805100B2 - Target positioning method - Google Patents

Description

The present invention relates to a method for positioning a target in which a target corresponding to the center of the vehicle in the vehicle width direction is installed on an extension of the vehicle center line.

In vehicles equipped with in-vehicle devices such as cameras, radars, and headlights, it is common to make initial adjustments of these in-vehicle devices.

For example, in Patent Document 1, the headlight tester for adjusting or measuring the brightness and irradiation direction of the headlight is substantially the same as the through hole of the facing reference shaft attached to the headlight tester in order to face the vehicle. After an index plate having a diameter through hole formed at substantially the same height as the through hole is erected at the outer position of each center of the front and rear wheels, and a string is passed through the through hole and the two through holes. , A method for measuring a headlight tester is disclosed in which the position of the headlight tester in the vehicle width direction is adjusted so that the string is stretched in a straight line.

Japanese Unexamined Patent Publication No. 2008-151733

By the way, it is necessary to learn the initial position (vehicle center line) of the camera or the like, but since the above-mentioned Patent Document 1 is not configured to present the vehicle center line, the camera or the like is centered on the vehicle. There is a problem that it is difficult to set a mark or the like for recognizing a line.

Further, it is conceivable to set the vehicle center line based on the distance from the headlight tester facing the vehicle by using the measurement method of Patent Document 1, but in the case of Patent Document 1, the width of the vehicle body is front and rear. Since it is difficult to make the headlight tester face the vehicle for different vehicles, the accuracy required when the camera or the like learns the initial position may not be satisfied.

Therefore, when making the camera or the like recognize the vehicle center line, a string is passed under the vehicle body in the front-rear direction of the vehicle, and a plumb bob is hung from the center of the front emblem and the rear emblem corresponding to the center in the vehicle width direction. Conventionally, the center line of the vehicle is drawn by aligning the string with the tip of the plumb bob in the front and rear while pulling the string that passes under the vehicle body.

However, such a method requires two or more workers to pull the string, and there is a problem that the work of passing the string under the vehicle body is troublesome and the burden on the worker is large.

The present invention has been made in view of this point, and an object of the present invention is to provide a technique for easily and accurately installing a target corresponding to the center of the vehicle in the vehicle width direction on an extension of the vehicle center line. To provide.

In order to achieve the above object, in the target positioning method according to the present invention, by using visible light that can easily pass under the vehicle body, the target is set based on two relatively distant marks. It is installed accurately on the extension of the center line.

Specifically, the present invention targets a method for positioning a target in which a target corresponding to the center of the vehicle in the vehicle width direction is installed on an extension of the vehicle center line.

In this positioning method, a first mark corresponding to the center in the vehicle width direction is provided on one side of the vehicle body in the vehicle front-rear direction, and a second mark corresponding to the center in the vehicle width direction is provided on the other side of the vehicle body in the vehicle front-rear direction. It is provided with a vehicle provided, the target, an upper first ray output unit and a lower second ray output unit separated from each other, and is output from the center of the target and the first ray output unit. The target, the first ray output section, and the second visible ray so that the axis of the first visible ray and the axis of the second visible ray output from the second visible ray output section are on the same vertical plane. A positioning device in which the light ray output unit is arranged is prepared.

In this positioning method, a step of installing the third mark vertically below the second mark, a step of installing the positioning device on one side of the vehicle in the vehicle front-rear direction, and the first visible light beam are the first. It is characterized by including a step of adjusting the position of the positioning device so as to hit the first mark and to hit the third mark by passing the second visible light light under the vehicle.

According to this configuration, for example, after installing the third mark vertically below the second mark by using a plumb bob or the like and installing the positioning device on one side of the vehicle in the front-rear direction of the vehicle, for example, the first visible light is emitted. Since the position of the positioning device may be adjusted so that the second visible light passing under the vehicle hits the third mark while hitting the first mark, compared with the conventional method of passing a string under the vehicle body. As a result, workability can be greatly improved.

Here, since the axis of the first visible light and the axis of the second visible light are on the same vertical plane, the first visible light hits the first mark and the second visible light hits the third mark. If the positioning device is installed, the vehicle center line exists on the vertical plane. Since the center of the target is also on the vertical plane, the target corresponding to the center in the vehicle width direction of the vehicle can be easily installed on the extension line of the vehicle center line.

Moreover, since positioning is performed based on two marks separated by approximately the vehicle body length, the first mark provided on one side of the vehicle body in the vehicle front-rear direction and the second mark provided on the vehicle body on the other side in the vehicle front-rear direction. For example, the positioning accuracy can be improved as compared with the case where positioning is performed based on two marks provided on one side of the vehicle body in the front-rear direction of the vehicle, in other words, two marks having a relatively short distance. Therefore, it can also be suitably used for initial adjustment of an in-vehicle device that requires high accuracy, such as having an in-vehicle camera learn an initial position (vehicle center line).

As described above, according to the target positioning method according to the present invention, the target corresponding to the center of the vehicle in the vehicle width direction can be easily and accurately installed on the extension line of the vehicle center line.

It is a perspective view schematically explaining the positioning apparatus which concerns on embodiment of this invention, and the positioning method using this. It is a top view schematically explaining the positioning method using a positioning device. It is a perspective view which shows the rear part of a vehicle schematically. It is a perspective view which shows the front part of a vehicle schematically. It is a figure explaining the conventional positioning method schematically.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

-Positioning device-
FIG. 1 is a perspective view schematically explaining a positioning device 1 according to the present embodiment and a positioning method using the positioning device 1, and FIG. 2 is a plan view schematically explaining a positioning method using the positioning device 1. Is. As shown in FIGS. 1 and 2, the positioning device 1 has a target mark 3 corresponding to the center of the vehicle 50 in the vehicle width direction, which is a reference when the camera 51 mounted on the vehicle 50 learns the initial position. Is used as a method for positioning a target to be installed on an extension of the vehicle center line CL.

As shown in FIG. 1, the positioning device 1 includes a target sheet 2 including a target mark 3, a target fixture 4 for fixing the target sheet 2, an upper first laser pointer 10, and a lower second laser pointer. 20 is provided, a support column 30 for supporting the target fixture 4 and the first laser pointer 10, a mobile mount 40, and a divider 47.

The gantry 40 has a base 41 located at the center, a square columnar first leg 42 extending horizontally from the base 41, and a square extending from the base 41 to the opposite side of the first leg 42. It has a columnar second leg portion 43 and a square columnar third leg portion 44 extending horizontally from the base portion 41 so as to be orthogonal to the first and second leg portions 42, 43. The first leg portion 42 and the second leg portion 43 are integrated, and the third leg portion 44 is assembled so that the upper surface thereof is flush with the upper surfaces of the first and second leg portions 42, 43. ing. First to third mounting plates 42a, 43a, 44a are provided at the tips of the first to third leg portions 42, 43, 44, respectively. Each of the mounting plates 42a, 43a, 44a is provided with casters (wheels) 45 for facilitating the movement of the positioning device 1 and a level adjuster 46 for height adjustment. In the following, in the positioning device 1, the first leg 42 side is referred to as the left side, the second leg 43 side is referred to as the right side, the third leg 44 side is referred to as the rear side, and the third leg 44 side is referred to. The opposite side is called the front side.

Each level adjuster 46 is configured so that the downward protrusion length from the mounting plates 42a, 43a, 44a changes by rotating the level adjuster 46 around a vertical axis. For example, when moving the positioning device 1, the level adjuster 46 is provided from the mounting plates 42a, 43a, 44a so that the lower end thereof is higher than the ground contact surface of the caster 45 so as not to hinder the rotation of the caster 45. While the downward protrusion length is adjusted to be short, when the positioning device 1 is installed, the downward protrusion length from the mounting plates 42a, 43a, 44a is set so that the lower end thereof touches the ground and the caster 45 floats. Adjusted for a long time. When the casters 45 are attached to the front sides of the first and second mounting plates 42a and 43a and the positioning device 1 is erected so that the moving state and the installed state of the positioning device 1 can be quickly and easily switched. The lower end of the level adjuster 46 may be grounded, while the caster 45 may be grounded when the positioning device 1 is tilted forward when the positioning device 1 is moved.

The support column 30 is formed in a square columnar shape and extends upward from the base portion 41 so as to be orthogonal to the first to third leg portions 42, 43, 44. Reinforcing ribs 35 are attached to the rear side surface of the support column 30 and the rear side surface of the second leg portion 43 so that the orthogonal relationship between the support column 30 and the first and second leg portions 42, 43 is maintained. ing. Further, reinforcing ribs 35 are also attached to the left side surface of the support column 30 and the left side surface of the third leg portion 44 so that the orthogonal relationship between the support column 30 and the third leg portion 44 is maintained. The shape of the reinforcing rib 35 is not particularly limited, and may be a right-angled triangular shape or, for example, a square shape as shown in FIG. The positioning device 1 is provided with a level (not shown) that seals air bubbles and liquid, and even if the installation surface is uneven, the three level adjusters 46 can be adjusted while looking at the level. By doing so, it is possible to easily bring the support column 30 into a state of extending vertically upward.

The first laser pointer (first light ray output unit) 10 and the second laser pointer (second light ray output unit) 20 are vertically separated from each other in the positioning device 1. The first and second laser pointers 10 and 20 are known devices using a semiconductor laser, and one point (target point) on the referent is set by a laser beam (visible light) output from the laser pointers 10 and 20. It is configured to point.

The upper first laser pointer 10 is rotatably attached to the right side surface in the substantially central portion of the support column 30 around the pivot axis via a pivot axis (not shown) orthogonal to the right side surface. .. By being rotatably attached to the support column 30 around the pivot axis in this way, the first laser pointer 10 irradiates the laser beam (hereinafter, also referred to as the first visible light) 11 diagonally upward or diagonally downward. Is possible.

On the other hand, the lower second laser pointer 20 irradiates the space under the vehicle body (between the installation surface and the lowest portion of the vehicle body) with a laser beam (hereinafter, also referred to as a second visible light) 21 substantially horizontally. It is fixed to the gantry 40 at such a high position.

The first laser pointer 10 and the second laser pointer 20 are an axis of the first visible light 11 output from the first laser pointer 10 and an axis of the second visible light 21 output from the second laser pointer 20. And are arranged in the positioning device 1 so as to be located on the same vertical plane. Therefore, even if the first laser pointer 10 is rotated about the pivot axis to irradiate the first visible light 11 diagonally upward or diagonally downward, as shown in FIG. 2, the first visible light 11 and the second visible light 11 are visible. The light beam 21 always overlaps with the light beam 21 in the top view.

The protractor 47 is a semicircular protractor having a measurement angle of 0 ° to 180 °, orthogonal to the support column 30, and 90 ° is the axial direction of the first and second visible rays 11 and 21 in the top view. It is attached to the underside of the second laser pointer 20 on the gantry 40 so as to match.

The target fixture 4 has an upper holder 5 and a lower holder 6 which are vertically separated from each other on the front side surface of the support column 30. These upper and lower holders 5 and 6 are made of metal and extend in a direction orthogonal to the vertical plane in which the axes of the first and second visible rays 11 and 21 are present. Each holder 5 and 6 is attached with a screw-type slide member 7 that slides along the support column 30 when the screw 7a is loosened, and is fixed to the support column 30 when the screw 7a is tightened. The vertical distance between the 5 and the lower holder 6 can be adjusted.

The target sheet 2 is made of a magnet sheet, the upper end of which is attached to the upper metal holder 5, and the lower end of the target sheet 2 is attached to the lower metal holder 6. As shown in FIG. 1, a black-and-white target mark 3 is drawn in the central portion of the target sheet 2. As shown in FIG. 1, the upper holder 5 and the lower holder 6 are larger in size because they extend laterally outward from the target sheet 2 and the vertical spacing can be adjusted. It is also possible to attach a target sheet.

Then, in the positioning device 1 of the present embodiment, when the target sheet 2 is attached to a predetermined position on the target fixture 4, the center 3C of the target mark 3, the axis of the first visible light 11, and the axis of the second visible light 21 are attached. The positional relationship between the target fixture 4, the first laser pointer 10 and the second laser pointer 20 is set so that and are on the same vertical plane.

-Vehicle-
FIG. 3 is a perspective view schematically showing the rear part of the vehicle 50, and FIG. 4 is a perspective view schematically showing the front part of the vehicle 50. As shown in FIGS. 1 and 4, a front emblem 52 is provided at the front end of the vehicle 50 at the center in the vehicle width direction. Further, as shown in FIG. 3, a rear emblem 53 is provided at the rear end of the vehicle 50 at the center in the vehicle width direction. Then, in the present embodiment, the front emblem 52 corresponds to the "first mark provided on one side (front side) of the vehicle body in the front-rear direction (front side) of the vehicle body and corresponding to the center in the vehicle width direction" in the present invention. However, the rear emblem 53 corresponds to the "second mark provided on the other side (rear side) of the vehicle body in the front-rear direction of the vehicle and corresponding to the center in the vehicle width direction" in the present invention. Further, as shown in FIG. 1, the vehicle 50 is equipped with a camera 51 that photographs the front of the vehicle.

-Positioning method-
In this way, in the vehicle 50 equipped with the camera 51, it is necessary for the camera 51 to learn the initial position (vehicle center line CL), and for that purpose, a mark indicating the vehicle center line CL is set in front of the camera 51. There is a need to.

In this regard, conventionally, a string 100 is passed under the vehicle body in the front-rear direction of the vehicle, and as shown in FIG. 3, a plumb bob 55 is hung from the center of the rear emblem 53, and as shown in FIG. 4, the front emblem 52 is hung. The plumb bob 54 is hung from the center of the vehicle, and while pulling the string 100 that has passed under the vehicle body, the string 100 is aligned with the tips of the front and rear plumb bobs 54 and 55, as shown in FIG. The method of pulling was adopted.

However, such a method requires two or more workers P1 and P2 to pull the string 100, and the work of passing the string 100 under the vehicle body is troublesome, which causes a problem that the burden on the worker is large. is there.

Therefore, in the present embodiment, the target mark 3 is installed on the extension line of the vehicle center line CL based on two relatively distant marks by using visible light that can easily pass under the vehicle body. I try to do it. Specifically, the positioning method of the present embodiment includes a step of installing a board 60 on which a mark (third mark) 61 is drawn vertically below the rear emblem 53, and installing a positioning device 1 in front of the vehicle 50. The step and the step of adjusting the position of the positioning device 1 so that the first visible light 11 hits the center of the front emblem 52 and the second visible light 21 passes under the vehicle 50 and hits the mark 61 on the board 60. And, including.

More specifically, first, as shown in FIG. 3, the plumb bob 55 hangs down from the center of the rear emblem 53. Then, as shown in FIG. 1, a board 60 on which a linear mark 61 extending vertically is drawn is prepared, and the board is rearward of the vehicle 50 so that the center of the plumb bob 55 and the mark 61 coincide with each other. Install 60. As a result, the mark 61 corresponding to the center of the vehicle 50 in the vehicle width direction is set vertically below the center of the rear emblem 53. As shown in FIG. 1, since the surface of the board 60 on which the mark 61 is drawn is inclined, by looking down on the inclined surface from above, even one operator can mark the center of the plumb bob 55. It can be easily confirmed whether or not it matches with 61.

Next, the positioning device 1 is installed in front of the vehicle 50 with the front side facing the vehicle 50 so that the center 3C of the target mark 3 is approximately on the extension line of the vehicle center line CL. When the positioning device 1 is installed in front of the vehicle 50, the support column 30 is extended vertically upward by adjusting the three level adjusters 46 while looking at the level provided on the positioning device 1.

Next, the first laser pointer 10 and the second laser pointer 20 are turned on, the rotation angle of the first laser pointer 10 is adjusted according to the installation height of the front emblem 52 for each vehicle type, and the first visible light 11 is fronted. Hit the center of the emblem 52. In this state, the board 60 is visually inspected from the front of the vehicle 50 through the space under the vehicle body, and whether or not the second visible light 21 output from the second laser pointer 20 hits the mark 61 drawn on the board 60. Check. Unlike the first laser pointer 10, which must adjust the rotation angle according to the installation height of the front emblem 52 for each vehicle type, the minimum ground clearance is statutory, so it was fixed to the gantry 40. The second laser pointer 20 can irradiate the board 60 with the second visible light 21 through the space under the vehicle body regardless of the vehicle type.

If the second visible light 21 does not hit the mark 61, the position of the positioning device 1 and the angle around the support column 30 are finely adjusted so that the first visible light 11 hits the center of the front emblem 52 and is second visible. Create a state in which the light ray 21 hits the mark 61. After that, it is confirmed with a level whether or not the support column 30 is tilted by finely adjusting the position of the positioning device 1, and if necessary, the height is finely adjusted with the level adjuster 46. If the fine adjustment of the position of the positioning device 1 and the fine adjustment of the height by the level adjuster 46 are repeated at most several times, the first visible light 11 will be in the front with the support column 30 extending vertically upward. It can be converged to a state where it hits the center of the emblem 52 and the second visible light 21 hits the mark 61.

Here, in the positioning device 1 of the present embodiment, since the center 3C of the target mark 3, the axis of the first visible light 11 and the axis of the second visible light 21 are on the same vertical plane, the support column 30 is vertically upward. If the positioning device 1 is installed at a position where the first visible light 11 hits the center of the front emblem 52 and the second visible light 21 hits the mark 61 in the extended state, as shown in FIG. The positioning device 1 faces the vehicle 50, and the center 3C of the target mark 3 is located on an extension of the vehicle center line CL. Therefore, the workability can be significantly improved as compared with the conventional method in which the string 100 is passed under the vehicle body.

After that, the camera 51 can learn the initial position with high accuracy based on the center 3C of the target mark 3 installed on the extension line of the vehicle center line CL.

Further, since the positioning device 1 of the present embodiment is provided with the protractor 47 and the positioning device 1 faces the vehicle 50 after positioning, the target mark installed on the extension line of the vehicle center line CL With 3 as the starting point, the direction orthogonal to the vehicle center line CL and the direction tilted by a predetermined angle from the vehicle center line CL can be accurately positioned, so that it can be used for cameras installed sideways or diagonally. It can also be used when learning the initial position.

Here, since the first laser pointer 10 is configured to be rotatable around the pivot axis and can irradiate the first visible light 11 diagonally upward or diagonally downward, for example, the center of the front emblem 52 and the windshield. It is also conceivable to install the positioning device 1 on the extension line of the vehicle center line CL based on the two marks provided on the front side of the vehicle body in the front-rear direction like the center. However, if positioning is performed based on two marks existing on one side of the vehicle body in the front-rear direction, in other words, based on two marks that are relatively close to each other, even a slight error causes the center 3C of the target mark 3. However, such an installation method is not preferable because there is a possibility that the vehicle center line CL deviates significantly.

On the other hand, in the positioning method of the present embodiment, positioning is performed based on two marks, a front emblem 52 provided at the front end of the vehicle and a rear emblem 53 provided at the rear end of the vehicle, which are separated by approximately the vehicle body length. Therefore, the positioning accuracy can be improved as compared with the case where positioning is performed based on two marks that are relatively close to each other. Therefore, it can be suitably used for initial adjustment of an in-vehicle device that requires high accuracy, such as having the camera 51 learn the initial position.

(Other embodiments)
The present invention is not limited to embodiments and can be practiced in various other forms without departing from its spirit or key features.

In the above embodiment, the present invention is applied to the camera 51 mounted on the front side of the vehicle 50, but the present invention is not limited to this, and the present invention may be applied to the camera mounted on the rear side of the vehicle 50. In this case, as shown in FIG. 4, the plumb bob 54 hangs down from the center of the front emblem 52, and the board 60 is arranged in front of the vehicle 50 so that the center of the plumb bob 54 and the mark 61 coincide with each other. After that, the positioning device 1 may be installed behind the vehicle 50 to create a state in which the first visible light 11 hits the center of the rear emblem 53 and the second visible light 21 hits the mark 61.

Further, in the above embodiment, the positioning device 1 is installed in front of the vehicle 50 after the board 60 is installed in the rear of the vehicle 50, but the present invention is not limited to this, and the positioning device 1 is installed in front of the vehicle 50. The board 60 may be installed behind the vehicle 50, and the order of both steps does not matter.

Further, in the above embodiment, the mark 61 is set vertically below the center of the rear emblem 53 by using the plumb bob 55 hanging from the center of the rear emblem 53, but the present invention is not limited to this, and for example, the board 60 is omitted. The plumb bob 55 itself may be used as a third marker, or the center of the rear emblem 53 may be based on visible light emitted downward from a laser pointer (not shown) attached to the center of the rear emblem 53. The mark 61 may be set vertically below, or the visible light itself may be used as a third mark.

Further, in the above embodiment, the upper holder 5 and the lower holder 6 of the target fixture 4 are configured to move up and down along the support column 30, but the present invention is not limited to this, and for example, the upper holder 5 and the lower holder 6 are not limited to this. May be configured to be slidable to the left and right. With this configuration, since the positioning device 1 faces the vehicle 50 after positioning, the center 3C of the target mark 3 is placed at a position separated (sliding) from the vehicle center line CL to the left and right by a predetermined distance. Can be set.

Further, in the above embodiment, the positioning device 1 is installed based on the front emblem 52 and the rear emblem 53, but the positioning device 1 is provided on one side and the other side in the vehicle front-rear direction of the vehicle body and corresponds to the center in the vehicle width direction. If this is the case, the positioning device 1 may be installed based on a portion other than the emblem.

Thus, the above embodiments are merely exemplary in all respects and should not be construed in a limited way. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

According to the present invention, the target corresponding to the center of the vehicle in the vehicle width direction can be easily and accurately installed on the extension line of the vehicle center line, so that the target can be used when an in-vehicle device is made to learn the initial position. It is extremely useful when applied to positioning methods.

1 Positioning device 3 Target mark 3C Center 10 1st laser pointer (1st ray output unit)
11 1st visible light 20 2nd laser pointer (2nd light output unit)
21 2nd visible light 50 Vehicle 52 Front emblem (1st landmark)
53 Rear emblem (2nd landmark)
61 mark (3rd mark)
CL vehicle center line

Claims (1)

This is a target positioning method in which a target corresponding to the center of the vehicle in the vehicle width direction is installed on an extension of the vehicle center line.
A vehicle in which a first mark corresponding to the center in the vehicle width direction is provided on one side of the vehicle body in the vehicle front-rear direction, and a second mark corresponding to the center in the vehicle width direction is provided on the other side of the vehicle body in the vehicle front-rear direction. ,
The target is provided with an upper first ray output section and a lower second ray output section separated from each other, and the center of the target and the first visible ray output from the first ray output section are provided. The target, the first ray output section, and the second ray output section are arranged so that the axis and the axis of the second visible ray output from the second ray output section are on the same vertical plane. Prepare the positioning device and
The process of installing the third mark vertically below the second mark and
The process of installing the positioning device on one side of the vehicle in the front-rear direction and
The step of adjusting the position of the positioning device so that the first visible light hits the first mark and the second visible light hits the third mark through the lower part of the vehicle is included. A characteristic target positioning method.

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