JP2001235536A - Marker installation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a method of adjusting a sensor fitting angle by the installation of a marker to easily and accurately adjust the angle of fitting a sensor to a vehicle even in a small space without needing a large space ahead in a marker installation method for installing the marker serving as a reference point in adjusting the angle of fitting the sensor for monitoring the front of the vehicle. SOLUTION: One end of a cord 23 is fixed to a trunk cover 12, and in the open state of the trunk cover 12, the cord 23 is extended ahead of the vehicle 10 so as to pass a reference point marked on the vehicle 10. The marker 21 is installed on the basis of the cord 23 extended ahead of the vehicle 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for setting a mark as a reference point for adjusting a mounting angle of a sensor of a vehicle radar device or the like.

[0002]

2. Description of the Related Art A vehicular radar device is mounted on a front portion of a vehicle, radiates a radio wave beam or a laser beam in a millimeter wave band toward the front, receives a reflected beam from an object to be detected, and detects the beam. It detects the presence or absence of an object and the position (distance, direction) to the detected object. Also, in a vehicle radar device, when detecting the direction of a beam object radiated forward from the front of the vehicle, it is necessary to accurately grasp the radiation direction of the beam. Need to be installed at the correct angle.

In a conventional vehicle radar device, a reflection member or the like for reflecting a beam radiated from the vehicle radar device is disposed in front of the vehicle as a sign serving as a reference point for adjustment.
The reflected beam is detected by the vehicle radar device, and the mounting angle of the vehicle radar device to the front of the vehicle is adjusted while observing the angle measurement result based on the electric field intensity distribution of the reflected beam (for example, the position of the peak point). I have.

[0004]

In the operation of adjusting the mounting angle of such a vehicle radar device, it is necessary to accurately set a sign serving as a reference point in a predetermined direction and further at a predetermined distance with respect to the vehicle. .

[0005] However, the vehicles on which the radar is mounted have different shapes and sizes depending on the type of vehicle, so that the setting position of the sign needs to be finely adjusted for each adjustment, and it is necessary to accurately stop the vehicle itself at a predetermined position. There is a problem that the work is also complicated.

An object of the present invention is to solve such a problem, and an object of the present invention is to make it possible to easily and accurately adjust a mounting angle of a sensor such as a vehicle radar device to a vehicle.

[0007]

In order to achieve the above object, the present invention relates to a method of installing a sign as a reference point for adjusting a mounting angle of a sensor for monitoring the front of a vehicle, the method comprising the steps of: Is fixed to the trunk cover, and in a state where the trunk cover is opened, the cord is extended forward of the vehicle so as to pass over a reference point attached to the vehicle, and the cord extended to the front of the vehicle is referred to. And setting the sign.

[0008] The present invention is further characterized in that the sign is set based on a position of a predetermined length from the trunk in the string.

Further, the reference is an emblem installed on a hood of the vehicle.

In a sign installation method for setting a sign serving as a reference point for adjusting a mounting angle of a sensor for monitoring a front of a vehicle, a radar light source for irradiating a radar beam on a trunk cover is provided, With the vehicle open, the direction of the radar beam is adjusted so that the radar beam passes over a predetermined height of a reference point attached to the hood opened at a predetermined angle, and the direction on the plane where the vehicle is installed is adjusted. The sign is set based on the irradiation point of the radar light.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for adjusting a mounting angle of a vehicle radar device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram showing a method of adjusting a mounting angle of a vehicle radar apparatus according to a first embodiment of the present invention (a corner reflector 2 serving as a sign during angle adjustment).
(A) shows each configuration in a state where setting is completed), (a) is a top view, and (b) is a side view.

Incidentally, the constituent parts in the drawings mainly show main members according to the present invention.

In the method for adjusting the mounting angle of the vehicle radar device according to the first embodiment of the present invention, the mounting angle is adjusted in the state shown in FIG. A fixing mechanism 40 for fixing one end of the cord 23 is installed at the upper center (corresponding to the mark position of an emblem or the like) of the trunk 12 (the trunk 12 in an open state). The string 23 has one end fixed to the fixing mechanism 40 and the other end reaching the intersection P of the ground (reference plane) on which the vehicle located at the position of the predetermined distance (distance from the vehicle) L10 in front of the vehicle is placed. (A predetermined position of the string 23 is marked, and the string 2
3 by placing it on the ground). The cord 23 extends so as to pass through a position immediately above the center of the trunk 12 (the position of the fixing mechanism 40) and the center 11a (emblem) of the hood. That is, the string 23
Extends in the straight running direction of the vehicle 10 and forms a line passing through the center of the vehicle 10 in the width direction. A corner reflector 21 serving as a marker of the radar device 20 is disposed at a position shifted from the intersection P by an offset L1 in a lateral direction (a direction perpendicular to the traveling direction and perpendicular to the reference line).

The radar device 20 is mounted on the front of the vehicle 10 so as to be shifted laterally from the center of the vehicle 10 by an offset L1. The angle of attachment of the radar device 20 to the vehicle 10 is such that the beam is radiated from the radar device 20 to the corner reflector 21, the beam reflected by the corner reflector 21 is received, and the reception electric field intensity of the reflected beam becomes a peak value. The mounting angle is adjusted such that the angle is set to the center direction of the radiation beam of the radar device. That is,
In the case of the present embodiment, by fixing the radar device 20 so that the received electric field strength of the reflected beam is maximized, the straight traveling direction of the vehicle 10 and the beam radiation direction of the radar device 20 match.

Next, the fixing mechanism 40, which is a component in the method of adjusting the mounting angle of the vehicle radar device, is shown in FIG.
This will be described with reference to FIG.

FIG. 2 is a sectional view of the fixing mechanism 40.

As shown in FIG. 2, the fixing mechanism 40 includes a holder 42 for inserting and holding the string 23, and a holder 42.
And a base 41 for attaching and holding the
The upper center of the trunk 12 in the open state of the vehicle 10 (corresponding to the mark position of an emblem or the like), which is constituted by a suction cup 43 or the like formed of a rubber-based material having elasticity and placed on the upper center of the vehicle 2 It is fixed to. In addition, since this fixing may be temporarily fixed at the time of adjustment, the fixing may be performed using a sheet-like magnet or a double-sided tape.

Further, the fixing mechanism 4 according to the present embodiment.
Without sticking to the string 23, using an adhesive tape or the like.
May be attached to the upper center of the trunk 12 and fixed.

The holder 42 has a hole 42a through which the string 23 is inserted at the center, a tapered projection 42a at the front end, and a contact surface 42d contacting the base 41 at the rear end and the end 23a of the string 23. It is formed of a metal material or the like provided with a projection or the like having a convex counterbored hole having a contact surface 42c. The holder 42 is set such that the position of the string 23 inserted into the hole 42 a of the holder 42 is closer to the upper center of the trunk 12 by fitting the tapered projection 42 a into the tapered hole 41 a of the base 41. The position accuracy has been improved.

The base 41 is provided with a projection 42 of the holder 42.
a is formed of a prismatic metal material or the like provided with a tapered hole 41a in which a is inserted and fitted. A suction cup 43 is adhered and fixed to the lower surface of the base 41, and the suction cup 4 is fixed.
3 and is placed at the upper center of the trunk 12.

Next, a structure for fixing the radar device 20 to the vehicle 10 will be described. 3A and 3B are detailed views showing the structure of the angle adjustment mechanism 30 of the vehicular radar device 20, wherein FIG. 3A is a rear view and FIG. 3B is a side sectional view.

As shown in FIG. 3, the radar device 20 is fixed to the vehicle 10 via an angle adjusting mechanism 30 so that the angle can be adjusted. The angle adjusting mechanism 30 is provided in the radar device 20.
A holder 32 fixed to the mounting frame portion 20a,
Mounting bolts 35, 3 for positioning and holding the radar device 20
6, 37 and a spring 34 for holding the radar device 20.
A support shaft 38 for adjusting the angle of the radar device 20, and a bracket 31 for holding the radar device 20 and mounting it on the vehicle 10.
And so on. The holder 32 is formed of an elastic resin material or the like having a screw portion 32a provided at the center thereof, and is fixed to the mounting frame portion 20a of the radar device 20. The spring 34 is installed between the bracket 31 and the holder 32, and is formed of a spring material or the like that holds the radar device 20 to the bracket 31 via the mounting bolts 35, 36, and 37 with a reaction force due to the elasticity of the spring 34. It is a thing.

The angle adjusting mechanism 30 adjusts the angle of the radar device 20 with the support shaft 38 as a fulcrum by screwing (or loosening) each of the screw portions of the mounting bolts 35, 36, 37. It is. For example, the rotation angle R1 whose angle has been adjusted shown in FIG. 3B is set and fixed to the mounting frame portion 20a of the radar device 20 by loosening the screw portion 35a of the mounting bolt 35 screwed into the screw portion 32a of the holder 32. Spring 34
Move to the right direction in the figure through the reaction force of, and adjust.

Next, a method of adjusting the mounting angle of the radar device 20 will be described. FIG. 4 is a block diagram showing an electric configuration used in the method of adjusting the mounting angle of the vehicle radar device 20.

The beam from the radar device 20 is emitted to the corner reflector 21, and the reflected beam from the corner reflector 21 is reflected on the radar device 20 in parallel with the radiation beam. This reflected beam is received by the receiving antenna 60 and amplified by the high frequency amplifier 61. Then, the output signal of the high-frequency amplifier 61 is given to the filter 62.
The filter 62 extracts and filters only the signal having only the frequency component of the reflected beam. The output from the filter 62 is applied to an envelope detector 63 to obtain an envelope signal. The rectifier circuit 64 rectifies the output of the envelope detector 63, thereby obtaining a signal representing the received intensity of the received reflected beam. The output of the rectifier circuit 64 is converted into a digital signal by an analog / digital converter 65, and is given to a processing circuit 66 realized by a microcomputer or the like, where it is subjected to arithmetic processing. Then, the processing circuit 66 displays the calculation processing result, that is, the reception intensity of the reflected beam on the display means 67. The operator adjusts the angle of the radar device 20 by adjusting the angle adjustment mechanism 30 shown in FIG. 3 so that the reception level of the display screen becomes the maximum electric field intensity. In the case of a scanning radar that scans the beam radiation direction, the beam radiation direction that maximizes the reception intensity of the reflected beam is stored in the storage circuit 68 instead of directly adjusting the mounting angle, and this stored value is stored in the storage circuit 68. A method of correcting the detection result of the radar device 20 by calculation using the above method is also possible. Further, for these circuit configurations, the circuits of the radar device 20 can be used.

The allowable angle range at the time of this angle adjustment is:
According to the following.

First, an intersection P in front of the vehicle 10 is determined by the string 23, and an axis line which is the center of the vehicle in the straight running direction is set.
In order to keep it within 5 degrees, if the distance L10 is, for example, approximately 10 m, the shifted position of the intersection P is within 87 mm, and if the distance between the trunk 12 and the hood 11 is, for example, approximately 3 m, the center of the hood 11 The displaced position of the portion 11a may be within approximately 26 mm. Since this value is a value that can be set sufficiently, the interval L10 can be set within 10 m. Therefore, if the adjustment error of the radar device 20 by the angle adjustment mechanism unit 30 is suppressed within 0.5 degrees, the mounting angle of the radar device 20 can be suppressed within 1 degree.

Next, the procedure of the method for adjusting the mounting angle of the vehicle radar device will be described with reference to FIG. FIG. 5 is a flowchart showing the procedure of the method of adjusting the mounting angle of the radar device 20, and the adjustment is performed in the order of steps shown in this flowchart.

Step S1: The vehicle 10 is set on a road which is flat and close to the ground horizontal reference plane A, and is 5 m ahead of the vehicle 10
The corner reflector 21 is temporarily installed at a predetermined position (L10) within a range of 10 m to 10 m.

Step S2: The trunk 12 of the vehicle 10 is opened to a position substantially at a right angle, and a fixing mechanism 40 to which the end of the string 23 is fixed at the upper center (corresponding to a mark position such as an emblem) is mounted via a suction cup 43. Place.

Step S3: The cord 23 attached to the fixing mechanism 40 is extended near the road surface of the temporarily installed corner reflector 21 in front of the vehicle.

Step S4: The bonnet 11 is opened to such a position that the upper surface of the bonnet 11 contacts the stretched string 23.

Step S5: This string 23 is the bonnet 1
The string 23 is moved right and left near the road surface of the corner reflector 21 so as to pass through the center 11a of the upper surface of the vehicle 1 to set the axis in the straight running direction of the vehicle.

Step S6: A mark is made at the intersection P of the string 23 in contact with the road surface near the corner reflector 21. In addition, the predetermined position of the string 23 (indicating the position where it can be put on the road)
Is marked on the road surface, and the intersection P is marked.

Step S7: The corner reflector 21 is set at a position shifted by the offset (L1) of the radar device 20 from the position of the intersection P.

Step S8: From the radar device 20 temporarily attached to the front of the vehicle 10, the corner reflector 21
And the radar device 20 receives the reflected beam from the corner reflector 21.

Step S9: The received signal is displayed on the display screen of the display means 67. While observing the display screen, the angle of the radar device 20 is adjusted by the angle adjustment mechanism 30 shown in FIG. 3 so that the reflected beam from the corner reflector 21 has the maximum reception intensity, and the radar device 20 is fixed. .

Thus, according to the method for adjusting the mounting angle of the vehicle radar device, the corner reflector 21 can be easily and accurately installed, so that the angle adjustment accuracy of the radar device 20 is improved, and the angle of the vehicle in the straight traveling direction can be improved. Problems such as detection of a vehicle in an adjacent traveling lane due to deviation from the axis of the radar device can be prevented, and the work can be facilitated. Further, the mounting angle of the radar device 20 can be easily and accurately adjusted in a narrow space without requiring a large space in front of the vehicle.

Next, a method for adjusting a mounting angle of a vehicle radar device according to a second embodiment of the present invention will be described with reference to the drawings.

FIG. 7 is an overall configuration diagram showing a method of adjusting a mounting angle of a vehicle radar device according to a second embodiment of the present invention (a corner reflector 2 serving as a sign during angle adjustment).
(A) shows each configuration in a state where setting is completed), (a) is a top view, and (b) is a side view.

Incidentally, the constituent parts in the figure mainly show the main members according to the present invention.

As shown in FIGS. 7 and 8, the method for adjusting the mounting angle of the vehicle radar device according to the second embodiment of the present invention is different from that of the first embodiment in that A laser beam 25 emitted from a laser pointer 51 is used in place of the string 23 used as a means for setting the axis which is the center of the straight traveling direction, and an attachment mechanism for holding the laser pointer 51 and adjusting the angle. 50 and the like.

In the method for adjusting the mounting angle of the vehicle radar device according to the second embodiment of the present invention, the mounting angle is adjusted in the state shown in FIG. An attachment mechanism 50 for fixing a laser pointer 51 onto which the laser beam 25 is projected is installed at the upper center (corresponding to the mark position of an emblem or the like) of the trunk 12 (the trunk 12 in an open state). And the laser beam 25 from the laser pointer 51
The laser pointer 5 so as to irradiate the intersection P of the ground (reference plane) on which the vehicle located at the predetermined distance L10 ahead of the vehicle on a line passing through the center in the width direction of the vehicle 10.
1 is installed.

For this purpose, the laser pointer 51 is mounted so that the laser beam 25 passes through the center of the trunk 12 (the position of the mounting mechanism 50) and the position immediately above the center 11a (emblem) of the hood. Has been adjusted. A corner reflector 21 serving as a marker of the radar device 20 is disposed at a position shifted from the intersection P by an offset L1 in a lateral direction (a direction perpendicular to the traveling direction and perpendicular to the reference line).

The radar device 20 is mounted on the front portion of the vehicle 10 so as to be shifted laterally from the center of the vehicle 10 by an offset L1. The angle of attachment of the radar device 20 to the vehicle 10 is such that the beam is radiated from the radar device 20 to the corner reflector 21, the beam reflected by the corner reflector 21 is received, and the reception electric field intensity of the reflected beam becomes a peak value. The mounting angle is adjusted such that the angle is set to the center direction of the radiation beam of the radar device. That is,
In the case of the present embodiment, by fixing the radar device 20 so that the received electric field strength of the reflected beam is maximized, the straight traveling direction of the vehicle 10 and the beam radiation direction of the radar device 20 match.

Next, the mounting mechanism 50, which is a component in the method of adjusting the mounting angle of the vehicle radar device, is shown in FIG.
This will be described with reference to FIG.

FIG. 8 is a detailed view of the mounting mechanism 50. FIG.
Is a side view, and (b) is a rear view.

As shown in FIG. 8, the mounting mechanism 50 includes a holder 52 for inserting and holding a laser pointer 51,
A knob 59 screwed into the screw hole 52b of the holder 52 to fix the laser pointer 51; a joint 53 having a rotating function attached to the holder 52;
An upper plate 55 for pressing and fixing the base plate 3 to the base 54, a hinge 58 for connecting the upper plate 55 to the base 54, a knob 56 used for pressing the upper plate 55, and a base for holding the laser pointer 51 via a joint 53 And a suction cup 57 formed of a rubber-based material having elasticity and the like, which mounts the base 54 at the upper center of the trunk 12. The mounting mechanism 50 is fixed to an upper center (corresponding to a mark position such as an emblem) of the trunk 12 in an open state of the vehicle 10. In addition, since this fixing may be temporarily fixed at the time of adjustment, the fixing may be performed using a sheet-like magnet or a double-sided tape. Also, any structure may be used as long as it holds the laser pointer 51 and has a function of rotating in the left, right, up, and down directions without being particular about the attachment mechanism 50 according to the present embodiment.

The mounting mechanism 50 adjusts the angle of projection of the laser beam 25 from the laser pointer 51 held by the holder 52 in the left, right, up, and down directions. By joint 53
Of the projection 53b is loosened, the contact portion between the projection 53b and the recess 54a of the base 54 is slid, and the joint 53 is rotated. By the rotation of the joint 53, the holder 52 to which the joint 53 is fixed is rotated. That is, the laser pointer 51 held by the holder 52 rotates. Then, when fixing at a predetermined angle, the knob 56 is tightened, the pressing force of the upper plate 55 on the projection 53b of the joint 53 is increased, and the sliding of the contact portion between the projection 53b and the recess 54a of the base 54 is stopped. Then, the joint 53 is fixed.

The holder 52 has a hole 52c at the center for inserting and holding the laser pointer 51, and a screw hole 5 at the upper surface into which a knob 59 for fixing the laser pointer 51 is screwed.
2b, is formed of a metal material or the like in the shape of a prism having a screw hole 52a into which a screw portion 53a of the joint 53 is screwed in a lower surface.

The base 54 has a spherical projection 53b of a joint 53 mounted and fixed to the holder 52 at the center.
A hemispherical concave portion 54a for sandwiching and holding the upper plate 55 with the upper plate 55, a hinge 58 having a rotating function connected to the upper plate 55 is attached to the left side surface, and the upper plate 5
5 is formed of a metal material or the like in a thick plate shape provided with screw holes 54b into which the screw portions 55a of the knob 56 for pressing the screw 5 are screwed. A suction cup 57 is adhered and fixed to the lower surface of the base 54, and the trunk 1 is connected via the suction cup 57.
2 is placed at the upper center.

The joint 53 is formed of a metal material or the like provided with a screw portion 53a to be attached and fixed to the holder 52 and a spherical projection 53b having a rotating function. The joint 53 attached and fixed to the holder 52
The protrusion 53b is sandwiched between the base 54 and the upper plate 55, and the knob 56 presses the protrusion 53b of the upper plate 55 to prevent the contact portion between the surface of the protrusion 53b and the recess 54a of the base 54 from slipping. And fixed.

Since the radar apparatus 20 and its electrical configuration are the same as those according to the first embodiment, the laser pointer 5
Except for the description of the error of the axis setting angle in the straight running direction of the vehicle caused by the one laser beam 25, the description thereof will be omitted.

First, the vehicle 1 is irradiated with the laser beam 25.
An intersection P in front of the vehicle is determined and an axis that is the center of the vehicle in the straight running direction is set. The accuracy of the set angle is smaller than that of the laser beam 2 according to the first embodiment.
5 and the angle adjustment accuracy by the mounting mechanism 50 are further improved.

Next, the procedure of the method of adjusting the mounting angle of the vehicle radar device will be described with reference to FIG. FIG. 9 is a flowchart showing a procedure of a method of adjusting the mounting angle of the radar device 20, and the adjustment is performed in the order of steps shown in the flowchart.

Step S1: The vehicle 10 is set on a road which is flat and close to the ground horizontal reference plane A, and is 5 m in front of the vehicle 10.
The corner reflector 21 is temporarily installed at a predetermined position (L10) within a range of 10 m to 10 m.

Step S2: The trunk 12 of the vehicle 10 is opened to a substantially right angle position, and the mounting mechanism 50 to which the laser pointer 51 is mounted and fixed at the upper center (corresponding to the mark position of the emblem or the like) is mounted via the suction cup 57. Place.

Step S3: The rotation of the laser pointer 51 by the mounting mechanism 50 so that the laser beam 25 of the laser pointer 51 mounted on the mounting mechanism 50 can be projected near the road surface of the temporarily installed corner reflector 21 in front of the vehicle. Adjust the angle.

Step S4: The emitted laser beam 25
Then, the bonnet 11 is opened to such a position that the upper surface of the bonnet 11 contacts.

Step S5: The mounting mechanism 50 adjusts the rotation angle of the laser pointer 51 in the left-right direction so that the laser beam 25 passes through the center 11a of the upper surface of the bonnet 11, and sets the axis in the straight running direction of the vehicle. I do.

Step S6: Intersection P at which the laser beam 25 is irradiated on the road surface near the corner reflector 21
Mark.

Step S7: The corner reflector 21 is set at a position shifted from the position of the intersection P by the offset (L1) of the radar device 20.

Step S8: From the radar device 20 temporarily attached to the front part of the vehicle 10, the corner reflector 21
And the radar device 20 receives the reflected beam from the corner reflector 21.

Step S9: This received signal is displayed on the display screen of the display means 67. While observing the display screen, the angle of the radar device 20 is adjusted by the angle adjustment mechanism 30 shown in FIG. 3 so that the reflected beam from the corner reflector 21 has the maximum reception intensity, and the radar device 20 is fixed. .

Thus, in the method for adjusting the mounting angle of the vehicle radar device, the mounting mechanism 50 having a function of rotating the laser beam in the horizontal and vertical directions holds the laser pointer 51, and the laser beam 25 of the laser pointer 51 straightens the vehicle. Since the axis which is the center of the traveling direction is set, the corner reflector 21 can be installed more accurately, so that the angle adjustment accuracy of the radar device 20 is further improved, and the axis in the straight traveling direction of the vehicle and the axis of the radar device. Problems such as detection of a vehicle in an adjacent traveling lane due to deviation from the axis can be prevented, and the work can be further facilitated. Further, the mounting angle of the radar device 20 can be easily and accurately adjusted in a narrow space without requiring a large space in front of the vehicle.

[0067]

As described above, according to the present invention, in the method for adjusting the mounting angle of the radar device for a vehicle, the trunk and the hood of the vehicle are opened, and the light of the string or the radar light source is used. Since the intersection point that contacts the road surface on the extension line connecting the upper center and the center of the bonnet is determined, and the axis that is the center of the vehicle in the straight running direction is set, the sign used to adjust the angle of the radar device for vehicles is set. Installation is
By being able to more accurately, the angle adjustment accuracy of the radar device 20 is improved, and it is possible to prevent problems such as detection of a vehicle in an adjacent traveling lane due to deviation between the axis of the vehicle in the straight traveling direction and the axis of the radar device, and The work is also easier. Further, the radar device 20 can be easily and accurately set in a narrow space without requiring a large space in front of the vehicle.
The mounting angle of can be adjusted.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a method of adjusting a mounting angle of a vehicle radar device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a fixing mechanism unit 40.

FIG. 3 is a detailed view showing a structure of an angle adjusting mechanism unit 30 of the vehicle radar device 20.

FIG. 4 is a block diagram showing an electric configuration used for a method of adjusting a mounting angle of a vehicle radar device.

FIG. 5 is a flowchart illustrating a procedure of a method of adjusting a mounting angle of the vehicle radar device according to the first embodiment of the present invention.

FIG. 6 is a curve diagram showing a distribution of a received electric field intensity according to a method of adjusting a mounting angle of a vehicle radar device.

FIG. 7 is an overall configuration diagram showing a method of adjusting a mounting angle of a vehicle radar device according to a second embodiment of the present invention.

FIG. 8 is a detailed view showing the structure of the mounting mechanism 50.

FIG. 9 is a flowchart illustrating a procedure of a method of adjusting a mounting angle of a vehicle radar device according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Vehicle 11 ... Bonnet 12 ... Trunk 20 ... Vehicle radar apparatus 20 21 ... Corner reflector 23 ... String 25 ... Laser beam of laser pointer 30 ... For vehicles Angle adjustment mechanism of radar device 31 Bracket 32 Holder 34 Spring 35, 36, 37 Mounting bolt 38 Angle support shaft 40 String fixing mechanism 41 ... Base 42 ... Holder 43 ... Sucker 50 ... Mounting mechanism part of laser pointer 51 ... Laser pointer 52 ... Holder 53 ... Joint 54 ... Base 55 ... Upper plate 56: knob 57: sucker

Claims (4)

[Claims] 1. A sign setting method for setting a sign serving as a reference point for adjusting an attachment angle of a sensor for monitoring a front of a vehicle, wherein one end of a string is fixed to a trunk cover, and the trunk cover is opened. And extending the string in front of the vehicle so as to pass over a reference point attached to the vehicle, and installing the sign based on the string extended in front of the vehicle. 2. The sign setting method according to claim 1, wherein the sign is set based on a position of a predetermined length from the trunk in the string. 3. The method according to claim 1, wherein the criterion is an emblem installed on a hood of the vehicle. 4. A sign setting method for setting a sign serving as a reference point for adjusting a mounting angle of a sensor for monitoring a front of a vehicle, comprising: installing a radar light source for irradiating a radar beam on a trunk cover; With the vehicle open, adjust the direction of the radar beam so that the radar beam passes above a predetermined height of a reference point attached to the hood opened at a predetermined angle, and the direction on the plane where the vehicle is installed is adjusted. A sign placing method, wherein the sign is placed with reference to an irradiation point of radar light.