JP2009031155A - Method and device for inspecting mounting direction of vehicle mounting object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and device for inspecting a mounting direction of a vehicle mounting object capable of accurately inspecting the mounting direction of the vehicle mounting object. <P>SOLUTION: In an irradiation process, a reflecting surface of a reflecting member 14 is irradiated with a plurality of linear light beams emitted from a semiconductor laser element while the positions on the reflecting surface are different or is irradiated with a planar light beam emitted from the semiconductor laser element. In a light receiving process, the plurality of linear light beams or the planar light beam reflected by the reflecting surface are received by a light receiving surface of a light receiving section 16. In a signal processing process, a positional displacement amount SL is calculated between the light receiving center point of the plurality of linear light beams or the planar light beam received by the light receiving surface and a predetermined reference center point on the light receiving surface based on the plurality of linear light beams or the planar light beam emitted from the semiconductor laser element. In an output process, the positional displacement amount SL calculated in the signal processing process is output. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mounting direction inspection method for a vehicle mounted object that inspects the mounting direction of a vehicle mounted object that is mounted on a vehicle, and a mounting direction inspection device that can suitably carry out this mounting direction inspection method.

  Detects the distance, direction, relative speed, etc. between the host vehicle and the preceding vehicle traveling in front of the host vehicle, and supplies the detection results to a system such as an inter-vehicle distance warning device, a collision prevention device, and an automatic tracking device. When the radar apparatus is attached to a vehicle, if the beam axis of the radar apparatus, that is, the beam irradiation direction is not accurately directed in a preset direction, for example, the system does not operate because a preceding vehicle is not detected.

  In order to avoid such a problem, in the first conventional technique, an axis adjustment jig for detecting the inclination of the axis line of the radar apparatus is attached to the upper part of the radar apparatus and protrudes upward from the engine room. The target jig is installed on the longitudinal axis of the vehicle, the axis adjustment light is irradiated from the laser pointer provided on the target jig to the mirror provided on the front surface of the axis adjustment jig, and the reflected light is applied to the light receiving plate. The inclination of the axis line of the radar apparatus is confirmed based on the position of the landing point where the light comes. When the direction of the axis line of the radar apparatus deviates beyond an allowable range, the mounting angle of the radar apparatus with respect to the vehicle body is adjusted so that the direction of the axis line coincides with the target direction (see, for example, Patent Document 1).

  In the second conventional technique, a visible light beam is emitted from a light source toward a light reflecting tape attached to a radar device of a stopped vehicle, and a captured image of reflected light by the light reflecting tape captured by a camera is displayed on a monitor. The radar apparatus is mounted and adjusted so that the bright spot of the reflected light comes to the center point (see, for example, Patent Document 2).

JP 2003-170794 A JP 11-118904 A

  In the first conventional technique, the axis adjustment light emitted from the laser pointer to the mirror is point-like light, and the axis adjustment light emitted from the laser pointer to the mirror due to distortion present on the surface of the mirror. The position of the light receiving point on the light receiving plate where the reflected light is received varies. As a result, the first conventional technique has a problem that the inclination of the axis line of the radar apparatus cannot be accurately confirmed, and the mounting direction of the radar apparatus cannot be accurately inspected.

  In the second conventional technique, when the surface portion of the radar apparatus to which the light reflecting tape is attached is uneven, the bright spot on the light receiving surface of the camera that receives the reflected light of the visible light irradiated from the light source to the reflecting tape. Therefore, it is impossible to accurately inspect whether or not the beam irradiation direction of the radar apparatus is in a preset direction. As a result, the second conventional technique also has a problem that the mounting direction of the radar apparatus cannot be accurately inspected, as in the first conventional technique.

  An object of the present invention is to provide a mounting direction inspection method and a mounting direction inspection device for a vehicle mounted object that can accurately inspect the mounting direction of the vehicle mounted object.

  According to the present invention (1), in the irradiation step, a plurality of linear light beams emitted from a light source are placed on the reflecting surface of the reflecting member provided in the vehicle-mounted object mounted on the vehicle at different positions on the reflecting surface. Or a planar light beam emitted from a light source and distributed in the plane direction. In the light receiving step, the plurality of linear light beams or the planar light beams reflected by the reflecting surface are received by the light receiving surface of the light receiving means. In the signal processing step, based on the light receiving center points of the plurality of linear light beams or the planar light beams received by the light receiving surface and the plurality of linear light beams or the planar light beams emitted from a light source. An amount of positional deviation from a reference center point on the light receiving surface determined in advance is calculated. In the output step, information representing the amount of positional deviation calculated in the signal processing step is output.

  According to the invention (5), the light irradiating means includes a light source, and a plurality of linear light beams emitted from the light source are placed on the reflecting surface of the reflecting member provided in the vehicle-mounted object at different positions on the reflecting surface. Or a planar light beam emitted from a light source and distributed in the plane direction. The light receiving means has a light receiving surface for receiving the plurality of linear light beams or the planar light beams reflected by the reflecting surface. The signal processing means includes a light receiving center point of the plurality of linear light beams or the planar light beam received by the light receiving surface of the light receiving means, and the plurality of linear light beams or the planar light emitted from a light source. A positional deviation amount with respect to a reference center point on the light receiving surface that is predetermined based on the beam is calculated. The output means outputs information representing the amount of positional deviation calculated by the signal processing means.

  According to the present invention (1), in the light receiving step, a plurality of linear light beams or planar light beams reflected by the reflecting surface are received by the light receiving surface of the light receiving means. Unlike the above-described conventional technique for receiving the point-like light beam reflected by the vehicle, when the mounting direction of the vehicle-mounted object mounted on each vehicle is the same, it is reflected by the reflective surface due to, for example, distortion of the reflective surface. In addition, it is possible to suppress as much as possible that the light receiving positions of the plurality of linear light beams or the planar light beams on the light receiving surface vary.

  Therefore, based on the light receiving position on the light receiving surface, that is, the light receiving center point of the plurality of linear light beams or planar light beams received on the light receiving surface, and the plurality of linear light beams or planar light beams emitted from the light source. The predetermined amount of positional deviation from the reference center point on the light receiving surface can be calculated more accurately than in the conventional technique. Since the information indicating the amount of misregistration calculated in this way is output in the output step, the user can mount the vehicle on the vehicle based on the information indicating the amount of misregistration even when the reflecting surface is distorted. It is possible to accurately inspect whether or not the mounting direction is oriented in a preset direction.

  According to the fifth aspect of the present invention, a plurality of linear light beams or planar light beams emitted from the light source and reflected by the reflecting surface of the reflecting member are received by the light receiving surface of the light receiving means. Unlike the conventional technique for receiving a point-like light beam reflected by a reflecting surface, if the mounting direction of a vehicle-mounted object mounted on each vehicle is the same, for example, the reflection is caused by distortion of the reflecting surface. It is possible to suppress as much as possible that the light receiving positions on the light receiving surface of the plurality of linear light beams or the planar light beams reflected by the surface vary.

  Accordingly, the signal processing means includes a light receiving position on the light receiving surface, that is, a plurality of linear light beams received by the light receiving surface of the light receiving means or a light receiving center point of the planar light beam, and a plurality of linear light beams emitted from the light source or The amount of positional deviation from the reference center point on the light receiving surface, which is predetermined based on the planar light beam, can be calculated more accurately than in the conventional technique. Since the information indicating the positional deviation amount calculated accurately in this way is output by the output means, the user can install the vehicle-mounted object even when the reflecting surface is distorted based on the information indicating the positional deviation amount. It is possible to accurately inspect whether or not the mounting direction is oriented in a preset direction.

  Hereinafter, a plurality of modes for carrying out the present invention will be described. In the following description, parts corresponding to the matters described in the preceding embodiments are denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described, the other parts of the configuration are the same as those described in the preceding section.

  FIG. 1 is a diagram showing a configuration of a mounting direction inspection apparatus 10 for a vehicle-mounted object according to the first embodiment of the present invention, and FIG. 2 is a diagram for explaining the mounting direction inspection apparatus 10 for a vehicle-mounted object. FIG. A mounting direction inspection method (hereinafter also referred to as “inspection method”) for a vehicle mounting object according to an embodiment of the present invention is performed by a mounting direction inspection device (hereinafter also referred to as “inspection device”) 10 of a vehicle-mounted object. To be implemented. The vehicle-mounted object of the present embodiment is a radar device 11, and the inspection device 10 inspects the mounting direction of the radar device 11, for example, checks whether the mounting direction of the radar device 11 is in a preset direction. It is a device to do. For example, the radar device 11 is installed at a position where electromagnetic waves can be radiated forward in the traveling direction of the vehicle 12. Such a position is, for example, in the front grille in front of the vehicle body of the vehicle 12. The radar apparatus 11 includes a radar apparatus main body 13 and a reflection member 14.

  The radar apparatus main body 13 is realized by, for example, a frequency modulated radar (abbreviation: FM / CW radar) apparatus. From a transmission antenna, an electromagnetic wave with a predetermined wavelength having directivity is transmitted as a transmission wave, and its radiation direction is changed. The reflected wave that is radiated while being angularly displaced in the horizontal direction with the passage of time and the transmitted wave is reflected by the target such as the preceding vehicle and returned is received by the receiving antenna, and the target is detected. The radar device 11 is used to detect a preceding vehicle in an auto cruise control (abbreviation: ACC) device and a brake assist system, or detects a preceding, side and rear vehicle in a pre-crash safety (abbreviation: PSC) device. Used to do. The reflecting member 14 is realized by, for example, a reflecting mirror having a reflecting surface. The reflection member 14 reflects a light beam emitted from a semiconductor laser element of the semiconductor laser device 15 described later on the reflection surface. The reflection surface of the reflection member 14 may be formed in a rectangular shape or may be formed in a circular shape.

  The inspection apparatus 10 includes a semiconductor laser device 15, a light receiving unit 16, and a personal computer (hereinafter sometimes referred to as “PC”) 17. The semiconductor laser device 15 which is a light irradiation means includes a semiconductor laser element which is a light source and an electrode terminal which is electrically connected to the semiconductor laser element. When a driving voltage and a driving current are supplied to the semiconductor laser element via the electrode terminal, the semiconductor laser element emits a light beam having a predetermined oscillation wavelength. The semiconductor laser device 15 irradiates the reflecting surface of the reflecting member 14 of the radar device 11 with a plurality of linear light beams emitted from the semiconductor laser element at different positions on the reflecting surface, or from the semiconductor laser element. A planar light beam emitted and distributed in the plane direction is irradiated.

  The plurality of linear light beams may be applied to the reflecting surface simultaneously from the semiconductor laser element, or may be applied to the reflecting surface with a predetermined time being shifted from the semiconductor laser element. The plurality of linear light beams may have a loop shape, for example, when irradiated on the reflecting surface of the reflecting member 14.

  The light receiving unit 16 that is a light receiving unit is realized by, for example, a CCD (Charge Coupled Device) camera. The light receiving unit 16 has a light receiving surface that receives a plurality of linear light beams or planar light beams reflected by the reflecting surface of the reflecting member 14. The light receiving unit 16 converts a plurality of linear light beams or planar light beams received by the light receiving surface into electric signals by photoelectric conversion, and applies the electric signals to the PC 17 connected via the connection cable.

  The PC 17 that is a signal processing unit and an output unit is configured such that the plurality of linear light beams or the center points of the planar light beams received by the light receiving surface of the light receiving unit 16 based on the electrical signal supplied from the light receiving unit 16. (Hereinafter also referred to as “light receiving center point”) and a center point on the light receiving surface that is predetermined based on the plurality of linear light beams or the planar light beams emitted from the semiconductor laser elements of the semiconductor laser device 15. The positional deviation amount SL (hereinafter also referred to as “reference center point”) is calculated, and the calculated positional deviation amount SL is output as information representing the positional deviation amount.

  In the present embodiment, when the inspection device 10 inspects the mounting direction of the vehicle-mounted object, the vehicle 12 is arranged and transported on the production line. A semiconductor laser device 15 and a light receiving unit 16 are provided in front of a predetermined inspection position where the vehicle 12 arranged on the production line stops and outside the movement range of the production line with the production line interposed therebetween. .

  The semiconductor laser device 15 directs the plurality of linear light beams emitted from the semiconductor laser element toward the reflecting surface of the reflecting member 14 of the radar device 11 mounted on the vehicle 12 stopped at a predetermined inspection position. The light beam is irradiated at a different position on the reflecting surface, or fixed so as to irradiate the planar light beam emitted from the semiconductor laser element.

  The light receiving unit 16 is positioned such that the plurality of linear light beams or the planar light beams emitted from the semiconductor laser elements of the semiconductor laser device 15 are reflected by the reflecting surface of the reflecting member 14 and enter the light receiving surface. It is fixed and provided. The light receiving unit 16 is configured such that when the positional deviation amount SL between the light receiving center point and the reference center point is zero or a numerical value within a predetermined range, in other words, the light receiving center point and the reference center point match or match. Is considered to be accurately positioned so that the irradiation direction of the beam irradiated from the radar device 11 is in a predetermined direction, for example, in the traveling direction of the vehicle 12.

  In the present embodiment, the reference center point is determined before the inspection device 10 inspects the mounting direction of the radar device 11 with respect to the vehicle 12. As a specific example, a reflector (hereinafter referred to as “reference reflector”) manufactured by eliminating distortion as much as possible and flattening the reflection surface with high precision in order to determine the reference center point. This reference reflector is arranged at the same position as the reflection member 14 when the vehicle 12 is placed on the production line and stopped at a predetermined inspection position. In this state, a plurality of linear light beams or planar light beams are irradiated from the semiconductor laser element of the semiconductor laser device 15 toward the reflecting surface of the reference reflecting plate. Then, the plurality of linear light beams reflected by the reflecting surface of the reference reflector and received by the light receiving surface of the light receiving unit 16 or a center point of the planar light beam is determined as a reference center point, and a reference center point Are calculated by the PC 17. A method for calculating the coordinates of the reference center point will be described later. The coordinates of the reference center point calculated by the PC 17 and the images representing the plurality of linear light beams or the planar light beams centered on the reference center point are stored in the storage unit 22 described later.

  FIG. 3 is a block diagram showing an electrical configuration of the PC 17. The PC 17 includes an input operation unit 21, a storage unit 22, an arithmetic processing unit 23, and a display unit 24. The input operation unit 21 is realized by, for example, a keyboard and a pointing device, and includes a plurality of operation buttons that are input by a user. When the operation buttons are operated, the input operation unit 21 generates a signal representing information corresponding to the operation, such as predetermined information such as numeric information, character information, and instruction information to the PC 17, and the arithmetic processing unit 23. To give. Therefore, the user can input information to the PC 17 by operating each operation button of the input operation unit 21.

  The storage unit 22 stores an operation program for operating the PC 17 and a predetermined arithmetic processing program. In addition, the storage unit 22 includes the coordinates of the reference center point calculated in advance before the inspection device 10 inspects the mounting direction of the radar device 11 with respect to the vehicle 12, and the plurality of linear light beams centered on the reference center point. An image C1 (hereinafter also referred to as “reference image”) representing the planar light beam is stored.

  The arithmetic processing unit 23 which is a signal processing means is realized by a processing circuit such as a CPU (Central Processing Unit). The arithmetic processing unit 23 functions as a signal processing unit and an output unit by executing the arithmetic processing program stored in the storage unit 22, and the mounting direction inspection method for a vehicle-mounted object according to an embodiment of the present invention Run part of. The arithmetic processing unit 23 calculates the coordinates of the light receiving center point based on the electrical signal given from the light receiving unit 16, and the coordinates of the calculated light receiving center point and the coordinates of the reference center point previously stored in the storage unit 22. Is calculated as a displacement SL between the light receiving center point and the reference center point. The arithmetic processing unit 23 gives the calculated displacement amount SL to the display unit 24 as information representing the displacement amount. A method for calculating the coordinates of the light receiving center point and the positional deviation SL will be described later.

  Further, the arithmetic processing unit 23 is based on the electric signal given from the light receiving unit 16 and receives the plurality of linear light beams or images representing the planar light beams received by the light receiving surface of the light receiving unit 16 (hereinafter referred to as “light receiving image”). C2 is generated, and a superimposed image C is generated by superimposing the generated received light image C2 and the reference image C1 stored in the storage unit 22 in advance. The arithmetic processing unit 23 gives the generated superimposed image C to the display unit 24 as information indicating the amount of displacement.

  The display unit 24 as output means uses at least one of a transmissive liquid crystal display element, a reflective liquid crystal display element, an electroluminescence (abbreviation: EL) element, and a transflective liquid crystal display element. Realized. The display unit 24 may be capable of color display or monochrome display. The display unit 24 displays the displacement amount SL and the superimposed image C given from the arithmetic processing unit 23 as information representing the displacement amount.

  Next, a method for calculating the coordinates of the light receiving center point and the reference center point and a method for calculating the positional deviation amount SL will be described. FIG. 4 is a diagram illustrating the superimposed image C and the positional deviation amount SL displayed on the display unit 24. FIG. 5 is an enlarged view of section V of FIG.

  In FIG. 4, as an example of the superimposed image C, a reference image representing a plurality of linear light beams having a centroid P as a reference center point determined in advance before the inspection device 10 inspects the mounting direction of the radar device 11. A reference image C1 having a loop shape when received by the light receiving surface of the light receiving unit 16 and a plurality of light received by the light receiving surface of the light receiving unit 16 when the inspection device 10 inspects the mounting direction of the radar device 11 A light reception image C2 representing a linear light beam, which is a superposition image C generated by superimposing a light reception image C2 having a light reception center point as a centroid Q and having a loop shape when received by the light reception surface. ing. In calculating the positional shift amount SL between the centroid P as the reference center point and the centroid Q as the light receiving center point, a method of calculating the coordinates of the centroid P of the reference image C1 will be described first.

The distance from an arbitrary orthogonal coordinate to the centroid is obtained by dividing the first moment of section with respect to the orthogonal axis by the sectional area. In addition, the cross-sectional primary moment with respect to an arbitrary orthogonal coordinate is obtained by multiplying the cross-sectional area by the distance to the centroid. From this, the cross-sectional area of an arbitrary region when the reference image C1 is divided into a plurality of regions as shown in FIG. 5, that is, n (n is a natural number) in this embodiment is ΔA _k (k = 1, 2,..., N−1, n), and the centroid positions of the respective regions on the XY coordinate axes are (x ₁ , y ₁ ), (x ₂ , y ₂ ),..., (X _k , y _k ). ,..., (X _n , y _n ) and the coordinates of the centroid P are (x ₀ , y ₀ ), the X coordinate x ₀ and Y coordinate y ₀ of the centroid P are expressed by the following formula (1): And Equation (2).

Next, a method for calculating the coordinates of the centroid Q of the received light image C2 will be described. The coordinates of the centroid Q of the received light image C2 can be calculated by the same method as the calculation method of the coordinates of the centroid P of the reference image C1. That is, the cross-sectional area of an arbitrary area when the received light image C2 is divided into a plurality of areas, that is, m (m is a natural number) in this embodiment, is ΔB _k (k = 1, 2,..., M− 1, m) and to the centroid position of each area by the XY coordinate axes _{(x 1, y 1),} (x 2, y 2), ..., (x k, y k), ..., (x m, y m ) And the coordinates of the centroid Q are (x _G , y _G ), the X coordinate x _G and Y coordinate y _G of the centroid Q are calculated by the following equations (3) and (4), respectively. be able to.

Next, a method for calculating the displacement SL between the centroid P and the centroid Q will be described. The positional deviation amount SL between the centroid P and the centroid Q is calculated by the coordinates of the centroid P calculated by the above formulas (1) and (2) and the above formulas (3) and (4). It can be calculated by calculating the difference from the coordinate of the centroid Q. More specifically, if the amount of positional deviation between the centroid P and the centroid Q in the X-axis direction is Δx, Δx is the X coordinate x _{G of the} centroid Q as shown in the following equation (5). They can be calculated by calculating the difference between the X coordinate x ₀ of the centroid P. Further, if the amount of positional deviation between the centroid P and the centroid Q in the Y-axis direction is Δy, Δy is the Y coordinate y _G of the centroid Q and the Y of the centroid P as shown in the following equation (6) it can be calculated by calculating the difference between the coordinate y _0.
Δx = x _G −x ₀ (5)
Δy = y _G −y ₀ (6)

  FIG. 6 is a flowchart showing a processing procedure of the mounting direction inspection method of the radar apparatus 11. If the coordinates of the reference center point are calculated before the inspection device 10 inspects the mounting direction of the radar device 11 with respect to the vehicle 12, the process proceeds to step a1 and this processing starts.

  In step a1, it is determined whether or not the vehicle is arranged at a predetermined inspection position on the production line. If it is arranged, the process proceeds to step a2, and if it is not arranged, until the vehicle is arranged at the inspection position. stand by.

  In step a2, which is an irradiation process, the semiconductor laser device 15 irradiates the reflecting surface of the reflecting member 14 of the radar device 11 with a plurality of linear light beams emitted from the semiconductor laser elements at different positions on the reflecting surface. Or a planar light beam emitted from a semiconductor laser element is irradiated. In step a2, when the reflection surface is irradiated with the plurality of linear light beams or planar light beams emitted from the semiconductor laser element, the process proceeds to step a3.

  In step a3, which is a light receiving step, the arithmetic processing unit 23 determines whether or not the light receiving unit 16 has received the reflected light reflected by the reflecting surface within a predetermined time w. If it is determined, the process proceeds to step a4. If it is determined that no light is received, the process returns to step a1.

  In step a4, which is a signal processing step, the coordinates of the light receiving center point are calculated by the arithmetic processing unit 23, the coordinates of the calculated light receiving center point, and the coordinates of the reference center point stored in the storage unit 22 in advance. Is calculated as a positional deviation amount SL between the light receiving center point and the reference center point. When the positional shift amount SL between the light receiving center point and the reference center point is calculated in step a4, the process proceeds to step a5.

  In step a5 which is an output process, the positional deviation amount SL calculated in step a4 is given to the display unit 24 as information representing the positional deviation amount by the arithmetic processing unit 23 and displayed on the display unit 24. In the present embodiment, the superimposed image C is given to the display unit 24 as information representing the positional deviation amount by the arithmetic processing unit 23 together with the positional deviation amount SL calculated in step a4 and displayed on the display unit 24. . When the calculated displacement amount SL is displayed on the display unit 24 in step a5, all processing procedures of the mounting direction inspection method of the radar apparatus 11 are completed.

  As described above, according to the mounting direction inspection apparatus 10 and the mounting direction inspection method for a vehicle-mounted object according to the first embodiment of the present invention, the reflection member 14 provided in the radar apparatus 11 mounted on the vehicle 12 in the irradiation process. A plurality of linear light beams emitted from the semiconductor laser element of the semiconductor laser device 15 are irradiated to the reflecting surface of the reflecting surface at different positions on the reflecting surface, or emitted from the semiconductor laser element and distributed in the surface direction. Irradiate a planar light beam. In the light receiving step, the plurality of linear light beams or the planar light beams reflected by the reflecting surface are received by the light receiving surface of the light receiving unit 16. In the signal processing step, the light receiving central points of the plurality of linear light beams or the planar light beams received by the light receiving surface and the plurality of linear light beams or the planar light beams emitted from a semiconductor laser element are used. Based on this, a predetermined amount of displacement SL from the reference center point on the light receiving surface is calculated. In the output step, the positional deviation amount SL calculated in the signal processing step is output as information representing the positional deviation amount.

  As described above, in the light receiving process, a plurality of linear light beams or planar light beams reflected by the reflecting surface are received by the light receiving surface of the light receiving unit 16, and thus emitted from a laser pointer or the like and reflected by the reflecting surface. Unlike the conventional technique of receiving a point-like light beam, when the mounting direction of the radar device 11 mounted on each vehicle 12 is the same, the plurality of light beams reflected on the reflecting surface due to, for example, distortion of the reflecting surface. The variation in the light receiving position of the linear light beam or the planar light beam on the light receiving surface can be suppressed as much as possible.

  Accordingly, a light receiving position on the light receiving surface, that is, a light receiving center point of a plurality of linear light beams or planar light beams received on the light receiving surface, and a plurality of linear light beams or planar light beams emitted from a semiconductor laser element. Based on this, it is possible to calculate the positional deviation SL with respect to the reference center point on the light receiving surface which is determined in advance more accurately than in the conventional technique. Since the displacement SL thus accurately calculated is output in the output process as information representing the amount of displacement, the user has distortion on the reflection surface based on the information representing the amount of displacement. Even in this case, it is possible to accurately inspect whether or not the mounting direction of the radar device 11 is in a preset direction.

  Next, a mounting direction inspection method for a vehicle-mounted object according to a second embodiment of the present invention will be described. Since the inspection method of the second embodiment of the present invention is similar to the inspection method of the first embodiment described above, only the differences from the first embodiment will be described, and the same parts will be described. Are given the same reference office and their description is omitted.

  In the second embodiment of the present invention, the planar light beam is irradiated to the entire reflecting surface of the reflecting member 14 in the irradiation step. Specifically, the planar light beam having an area larger than the area of the reflecting surface, preferably larger than the area of the reflecting surface is irradiated. Thus, in the signal processing step, in consideration of all the distortions existing on the reflecting surface, the light receiving center point of the planar light beam received by the light receiving surface and the planar light beam emitted from the semiconductor laser element are preliminarily determined. Since it is possible to calculate the amount of displacement SL from the reference center point on the light receiving surface that is determined, when the surface of the reflecting member 14 is irradiated with a planar light beam having an area smaller than the area of the reflecting surface. As compared with this, the displacement SL can be calculated more accurately.

  Therefore, the user is directed to set the mounting direction of the radar device 11 in a preset direction as compared with the case where the reflecting surface of the reflecting member 14 is irradiated with a planar light beam having an area smaller than the area of the reflecting surface. It is possible to inspect whether or not more accurately.

  Next, a mounting direction inspection method for a vehicle-mounted object according to a third embodiment of the present invention will be described. Since the inspection method according to the third embodiment of the present invention is similar to the inspection method according to the first and second embodiments described above, only the differences from the first and second embodiments will be described. For the same parts, the same reference office is attached and the description thereof is omitted.

  In the third embodiment of the present invention, the reflecting surface of the reflecting member 14 has a reference mark representing a predetermined reference position, and in the irradiation step, among the reflecting surfaces of the reflecting member 14 having the reference mark, The area including the reference mark is irradiated with the planar light beam. More specifically, in the irradiation step, the entire light reflecting surface is irradiated with the planar light beam. In the signal processing step, the light receiving center point is obtained based on a position corresponding to the reference mark of the planar light beam received by the light receiving surface, and a positional deviation between the obtained light receiving center point and the reference center point The amount SL is calculated. Thus, since the light receiving center point is obtained based on the position corresponding to the reference mark of the planar light beam received by the light receiving surface, the light receiving center point can be easily obtained.

  Further, since the light receiving center point is obtained based on the position corresponding to the reference mark of the planar light beam received by the light receiving surface, the amount of calculation for obtaining the light receiving center point is larger than that in the first embodiment. As a result, the calculation amount of the displacement SL can be reduced. Therefore, it is possible to quickly output information indicating the amount of positional deviation. Thus, the user can inspect in a relatively short time whether or not the mounting direction of the radar apparatus 11 is in a preset direction.

  More specifically, the predetermined reference position is the center position of the reflecting surface of the reflecting member 14, that is, the position of the centroid of the reflecting surface. Therefore, since the position corresponding to the reference mark on the light receiving surface is a position corresponding to the center position of the reflecting surface, the position corresponding to the reference mark on the light receiving surface can be obtained as the light receiving center point in the signal processing step. As a result, the light receiving center point can be obtained more easily than when the reference position is not the center position of the reflecting surface. The position of the centroid of the reflecting surface can be obtained as the position of the intersection of two diagonal lines of the reflecting surface, for example, when the reflecting surface of the reflecting member 14 is rectangular.

  In the present embodiment, the reflecting surface of the reflecting member 14 has a mark including a reference mark (hereinafter referred to as “target mark”). For example, the target mark has a cross shape in which two straight line portions are orthogonal to each other, and a rectangular cross portion where the two straight line portions intersect corresponds to the reference mark. The target mark is formed so that the reflectance is different from that of the remaining portion of the reflective surface excluding the target mark (hereinafter referred to as “non-marked portion”). More specifically, the target mark is formed so that the reflectance is lower than that of the non-mark portion or the reflectance is zero. That is, among the planar light beams irradiated on the reflective surface, the planar light beam irradiated on the target mark on the reflective surface is reflected with a lower reflectance than the planar light beam irradiated on the non-marked portion. Or not reflected.

  Therefore, on the light receiving surface, the amount of light received at the portion corresponding to the target mark on the reflecting surface is different from the amount of light received at the portion corresponding to the non-marked portion of the reflecting surface. Specifically, the amount of light received at the portion corresponding to the non-marked portion Smaller than. The part corresponding to the target mark on the light receiving surface is a part that receives the light beam reflected by the target mark or a part that does not receive the reflected light because the light beam is not reflected by the target mark. The portion corresponding to the non-marked portion of the light receiving surface is a portion that receives the light beam reflected by the non-marked portion.

  As described above, the amount of light received at the portion corresponding to the target mark is different from the amount of light received at the portion corresponding to the non-marked portion. The part corresponding to can be specified.

  For example, the target mark may be a groove formed by cutting the reflecting surface of the reflecting member 14 or may be a coating film formed by applying a black paint to the reflecting surface of the reflecting member 14. . The target mark is not limited to a cross shape, but may be another shape. Further, the reference mark may be formed independently at the reference position without being included in the target mark. In this case, the shape of the reference mark is not particularly limited, and may be, for example, a circular shape or a triangular shape.

  Next, a mounting direction inspection method for a vehicle-mounted object according to a fourth embodiment of the present invention will be described. Since the inspection method according to the fourth embodiment of the present invention is similar to the inspection method according to the first to third embodiments described above, only differences from the first to third embodiments will be described. For the same parts, the same reference office is attached and the description thereof is omitted.

  In the fourth embodiment of the present invention, the reflection surface of the reflection member 14 is formed with a hole at a predetermined reference position, and in the irradiation step, the reflection surface of the reflection member 14 where the hole is formed. Then, the planar light beam is irradiated onto a region including the hole. More specifically, in the irradiation step, the entire light reflecting surface is irradiated with the planar light beam. In the signal processing step, the light receiving center point is obtained based on a position corresponding to the hole portion of the planar light beam received by the light receiving surface, and a positional deviation between the obtained light receiving center point and the reference center point is obtained. The amount SL is calculated. Thus, since the said light reception center point is calculated | required based on the position corresponding to the said hole of the planar light beam light-received by the light-receiving surface, a light reception center point can be calculated | required easily.

  Further, since the light receiving center point is obtained based on the position corresponding to the hole of the planar light beam received by the light receiving surface, the amount of calculation for obtaining the light receiving center point is the same as that of the first embodiment. Thus, the amount of calculation of the displacement SL can be reduced. Therefore, it is possible to quickly output information indicating the amount of positional deviation. Thus, the user can inspect in a relatively short time whether or not the mounting direction of the radar apparatus 11 is in a preset direction.

  More specifically, the reference position is the center position of the reflecting surface of the reflecting member 14, that is, the position of the centroid of the reflecting surface. Therefore, since the position corresponding to the hole on the light receiving surface is a position corresponding to the center position of the reflecting surface, the position corresponding to the hole on the light receiving surface can be obtained as the light receiving center point in the signal processing step. . As a result, the light receiving center point can be obtained more easily than when the reference position is not the center position of the reflecting surface. The position of the centroid of the reflecting surface can be obtained as the position of the intersection of two diagonal lines of the reflecting surface, for example, when the reflecting surface of the reflecting member 14 is rectangular.

  Of the planar light beam irradiated on the reflecting surface, the planar light beam irradiated on the hole of the reflecting surface is not reflected and is not reflected on the portion other than the hole on the reflecting surface (hereinafter referred to as “non-hole”). Only the irradiated planar light beam is reflected. Therefore, in the light receiving surface, the portion corresponding to the hole portion does not receive light, and only the portion corresponding to the non-hole portion receives the light beam. Therefore, the portion corresponding to the hole portion is specified from the difference in the light receiving state. Can do.

  In this Embodiment, the shape of the hole formed in the reflective surface of the reflection member 14 is not specifically limited, For example, a circular shape may be sufficient and a triangular shape may be sufficient.

  Each above-mentioned embodiment is only illustration of this invention, and can change a structure within the scope of the present invention. In the first embodiment described above, the superimposed image C generated by superimposing the reference image C1 and the received light image C2 is displayed on the display unit 24 together with the displacement SL calculated by the arithmetic processing unit 23. However, the present invention is not limited to such a configuration. For example, only the displacement SL may be displayed on the display unit 24, or only the superimposed image C may be displayed on the display unit 24. When only the superimposed image C is displayed on the display unit 24, the user looks at the superimposed image C displayed on the display unit 24 to determine whether the mounting direction of the radar apparatus 11 is in a preset direction. Can be inspected relatively easily. In addition, when the user sees the superimposed image C and recognizes that the light receiving center point and the reference center point do not coincide with each other, the user may perform an operation to make the light receiving center point coincide with the reference center point.

  In each of the above-described embodiments, the inspection apparatus and the inspection method in the case where the vehicle mounted object is the radar apparatus 11 have been described. However, in the other embodiments of the present invention, not only the above-described radar apparatus 11 but also the vehicle. As long as it is mounted and needs to be inspected in its mounting direction, similarly to the radar apparatus 11, the above-described inspection apparatus and inspection method can be suitably implemented.

It is a figure which shows the structure of the mounting direction inspection apparatus 10 of the vehicle mounted goods which is the 1st Embodiment of this invention. It is a figure for demonstrating the mounting direction inspection apparatus 10 of a vehicle mounted object. It is a block diagram which shows the electric constitution of PC17. It is a figure which shows the superimposed image C displayed on the display part 24, and position shift amount SL. It is a figure which expands and shows the section V of FIG. 3 is a flowchart showing a processing procedure of a mounting direction inspection method for a radar apparatus 11;

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle mounting direction inspection apparatus 11 Radar apparatus 12 Vehicle 13 Radar apparatus main body 14 Reflecting member 15 Semiconductor laser apparatus 16 Light receiving part 17 Personal computer (PC)
21 Input Operation Unit 22 Storage Unit 23 Arithmetic Processing Unit 24 Display Unit C0 Superimposed Image C1 Reference Image C2 Light Received Image SL Position Deviation

Claims (5)

A method for inspecting the mounting direction of a vehicle-mounted object to inspect the mounting direction of the vehicle-mounted object mounted on the vehicle,
A plurality of linear light beams emitted from a light source are irradiated to a reflecting surface of a reflecting member provided in a vehicle-mounted object at different positions on the reflecting surface, or emitted from the light source and distributed in the surface direction. An irradiation process of irradiating the light beam;
A light receiving step of receiving the plurality of linear light beams or the planar light beams reflected by the reflecting surface by a light receiving surface of a light receiving unit;
The light reception center points of the plurality of linear light beams or the planar light beams received by the light receiving surface and the light reception predetermined based on the plurality of linear light beams or the planar light beams emitted from a light source. A signal processing step of calculating the amount of positional deviation from the reference center point on the surface;
A method for inspecting the mounting direction of a vehicle-mounted object, comprising: an output step of outputting information representing the amount of positional deviation calculated in the signal processing step.   2. The mounting direction inspection method for a vehicle-mounted object according to claim 1, wherein, in the irradiation step, the planar light beam is irradiated to the entire reflection surface of the reflection member. In the irradiation step, an area including the reference mark is irradiated with the planar light beam among the reflective surfaces of the reflective member having a reference mark representing a predetermined reference position,
In the signal processing step, the light receiving center point is obtained based on a position corresponding to the reference mark of the planar light beam received by the light receiving surface, and a positional deviation between the obtained light receiving center point and the reference center point is obtained. 3. The method for inspecting the mounting direction of a vehicle-mounted object according to claim 1, wherein the amount is calculated. In the irradiation step, the planar light beam is irradiated to a region including the hole portion in the reflection surface of the reflection member in which the hole portion is formed at a predetermined reference position.
In the signal processing step, the light receiving center point is obtained based on a position corresponding to the hole of the planar light beam received by the light receiving surface, and a positional deviation between the obtained light receiving center point and the reference center point is obtained. 3. The method for inspecting the mounting direction of a vehicle-mounted object according to claim 1, wherein the amount is calculated. A mounting direction inspection device for a vehicle-mounted object for inspecting the mounting direction of a vehicle-mounted object mounted on a vehicle,
A plurality of linear light beams emitted from a light source are applied to a reflecting surface of a reflecting member provided on a vehicle-mounted object provided with a light source at different positions on the reflecting surface, or emitted from the light source and subjected to a surface direction. Light irradiation means for irradiating a planar light beam distributed in
A light receiving means having a light receiving surface for receiving the plurality of linear light beams or the planar light beams reflected by the reflecting surface;
Based on the light receiving center points of the plurality of linear light beams or the planar light beams received by the light receiving surface of the light receiving means, and the plurality of linear light beams or the planar light beams emitted from a light source in advance. Signal processing means for calculating a positional deviation amount with respect to a reference center point on the light receiving surface to be determined;
An installation direction inspection apparatus for a vehicle-mounted object, comprising: output means for outputting information representing the amount of positional deviation calculated by the signal processing means.

Images