JP6424635B2 - Pointing direction measuring instrument - Google Patents

Description

  The present invention relates to a pointing direction measurement device used for a pointing direction confirmation operation of an antenna performed in registration inspection or the like of a radio station.

  Conventionally, in the pointing direction confirmation operation of an antenna carried out in a registration inspection of a radio station, the angle of the pointing direction of the antenna is visually confirmed using a compass or a map. For this reason, there is a problem that the measurement results are dispersed, and the error is large.

  As a technique aimed at accurately measuring the angle of direction in the prior art, there is a technique described in Patent Document 1. This technology relates to a line angle measuring device for measuring the angle of a line between utility poles, in which an orientation magnetic needle is provided on one side of a rectangular base plate, and a mirror is provided on one side of the base plate. A single reference line is provided through the magnetic needle. Then, the line angle measuring instrument is placed under the wire, the wire is projected on the mirror surface, and the base plate is operated to make the wire and the reference line coincide with each other, so that the angle of the line is measured. .

JP 2007-278957 A

  By the way, the line angle measuring device described in Patent Document 1 seems to be applicable to measuring the angle of the pointing direction of the antenna. However, although it is possible to easily position the line angle measuring device below the electric wire, in the case of an antenna, it is often fixed to the steel tower, and the lower part of the steel tower becomes an obstacle and the line angle measurement It may be difficult to place the track angle meter below the antenna. In this case, the directivity direction of the antenna and the reference line can not always be made to coincide with each other, and the antenna projected on the mirror may be deviated from the reference line.

  The present invention has been made in view of such a problem, and it is an directivity direction measurement which realizes that the directivity direction confirmation work of the antenna to be carried out in the registration inspection of the radio station can be performed in a short time and efficiently. Provide the

  In order to achieve the above object, the present invention has the following configuration.

  (1) A flat plate-like mirror body, a base plate comprising a flat plate-like transparent member, an azimuthal magnetic needle fixed to the base plate and pointing the direction on the plate surface of the base plate, and rotatable relative to the center of the azimuthal magnetic needle And a grid-like scale formed of a plurality of longitudinal lines and a plurality of horizontal lines parallel to each other is displayed in an area near the orientation magnetic needle on the plate surface of the base plate. A particular reference line of the vertical lines and the plurality of horizontal lines pass through the center of the compass, the mirror body is provided on the base plate, and the display area of the scale is to be measured in the pointing direction A pointing direction measuring instrument characterized by projecting.

  According to (1), the antenna serving as the confirmation target of the pointing direction is projected on the mirror body, and the pointing direction of the antenna is made to coincide with any one of the plurality of vertical lines and the plurality of horizontal lines. Adjust the protractor so that the pole is at 0 degrees. At this time, the angle of the protractor at which the reference line is located or an angle of ± 90 degrees to this angle is the angle of the pointing direction of the antenna. As described above, even if the position of the direction measuring tool deviates to some extent with respect to the antenna reflected on the mirror body, it is possible to easily measure the pointing direction of the antenna by matching the pointing direction of the antenna and the scale.

  (2) A pointing direction measuring instrument according to (1), further comprising a leveler fixed to the base plate to indicate whether the base plate is horizontal or not.

  According to (2), it becomes possible to easily make the base plate horizontal, and it is possible to carry out the operation of confirming the directivity direction of the antenna in a shorter time and efficiently.

  (3) In (2), the pointing direction measuring instrument further comprising: a plurality of support legs fixed to the base plate, the support legs having an adjustment mechanism for adjusting a length.

  According to (3), it is possible to finely adjust the base plate to be horizontal by adjusting the length of the support leg.

  According to the present invention, it is possible to efficiently perform the pointing direction confirmation operation of the antenna, which is performed in the registration inspection or the like of the radio station, in a shorter time.

It is an explanatory view showing composition of pointing direction measuring instrument 1 in one embodiment of the present invention. It is a figure which shows the example which showed the parabola antenna on the mirror surface plate 40 of 2nd area | region 10 b.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an explanatory view showing the configuration of the pointing direction measuring instrument 1 according to an embodiment of the present invention, FIG. 1 (a) is a plan view, FIG. 1 (b) is a side view, and FIG. FIG.

  The pointing direction measuring instrument 1 is configured to include a base plate 10, a compass 20, a level device 30, a mirror surface plate 40 corresponding to a mirror body, and a support leg 50.

  The base plate 10 is made of a substantially rectangular plate-like member made of a transparent material such as an acrylic plate. The plate surface of the base plate 10 is divided into a first area 10a and a second area 10b by an imaginary line A parallel to the short side, and a hole 12 for mounting a compass 20 is provided in the first area 10a. It is formed. Further, in the second region 10b, a grid-like scale 14 formed of a plurality of vertical lines 14a arranged at equal intervals and a plurality of horizontal lines 14b arranged at equal intervals is engraved. The vertical line 14 a is parallel to the long side of the base plate 10, and the horizontal line 14 b is parallel to the short side of the base plate 10. That is, the vertical lines 14a and the horizontal lines 14b are orthogonal to each other. The central vertical line 14 a of the plurality of vertical lines 14 a is formed across the first region 10 a and extends to the hole 12. In addition, for convenience of the following description, the vertical line 14a at the center may be referred to as a reference line 14c.

  The back surface area of the second area 10 b in the base plate 10 is formed stepwise with respect to the back surface area of the first area 10 a. The mirror plate 40 is fixed to the back surface area of the second area 10 b. At this time, the mirror surface of the mirror plate 40 faces the back surface of the second region 10b.

  The compass 20 includes an orientation magnetic needle 20 a, a protractor 20 b, and a housing 20 c. The azimuthal magnetic needle 20a is an elongated flat magnet which is magnetized such that one end side is N pole and the other end side is S pole.

  The protractor 20 b has an angle of 0 to 360 degrees when the letters “E”, “W”, “S”, “N”, and “N” corresponding to north, south, east and west are 0 degrees (360 degrees). It is an annular plate member having a scale that can be measured. The inside diameter of the protractor 20b is set to be slightly larger than that of the orientation magnetic needle 20a.

  The housing 20c is a cylindrical member that houses the compass 20 and the protractor 20b. A needle-like member is provided upright at the center of the housing 20c, and the orientation magnetic needle 20a is rotatably mounted at the tip of the needle-like member. Furthermore, the protractor 20b is disposed so as to surround the compass 20a.

  The upper portion of the case 20c containing the azimuthal magnetic needle 20a and the protractor 20b is covered by a transparent member. Moreover, the dial member which rotates protractor 20b is provided in the lower part of case 20c. The protractor 20b can rotate the protractor 20b such that, for example, the N pole of the compass 20a and the "N" of the protractor 20b coincide with each other by the operation of the dial by the operator.

  The compass 20 is inserted into and fixed to the hole 12 of the base plate 10. Therefore, the rotation operation of the protractor 20b is performed from the back side of the base plate 10. In addition, when the compass 20 is fixed to the base plate 10, the rotation center of the magnetic compass 20a is positioned on a virtual straight line including the reference line 14c. Moreover, the plate surface on which the angle in the protractor 20 b is displayed becomes flush with the plate surface of the base plate 10.

  The leveling device 30 is installed on the surface of the base plate 10 and displays whether the base plate 10 is horizontal or not.

  The mirror plate 40 is disposed on the rear surface of the second region 10 b of the base plate 10 to mirror the background of the scale 14. The mirror plate 40 has substantially the same size as the second region 10 b, and when the mirror plate 40 is installed on the base plate 10, the back surface of the mirror plate 40 and the back region of the first region 10 a are flush. The mirror surface of the mirror plate 40 and the plate surface of the base plate 10 are parallel to each other.

  The support leg 50 is comprised by the leg member 50a and the adjustment mechanism 50b which adjusts the length of the leg member 50a, as shown in FIG.1 (b) and FIG.1 (c). The leg member 50a is formed of a columnar member, and a hinge member (not shown) for pivotally installing on the base plate 10 is provided at one end. An adjustment mechanism 50b is installed at the other end of the leg member 50a. The adjusting mechanism 50b is composed of an abutting member abutting on the ground and a bolt member fixed to the abutting member, and the bolt member is screwed to the leg member 50a. The length of the support leg 50 can be adjusted by projecting or retracting the bolt member with respect to the leg member 50a by rotating the contact member.

  The support legs 50 are mounted on the base plate 10 by fixing hinge members provided on the leg members 50 a to the four corners of the back surface of the base plate 10 to which the mirror plate 40 is fixed. As a result, on the back surface side of the base plate 10, the support leg 50 can be switched between a state of being erected on the plate surface and a state of being folded along the long side of the plate surface. That is, the base plate 10 is supported by the four support legs 50 by raising the four support legs 50 when the pointing direction measuring instrument 1 is used and placing the support legs 50 on the mounting surface. It is positioned at a predetermined height from the surface.

  Next, how to use the pointing direction measuring instrument 1 of the present embodiment will be described. Here, the case of measuring the angle of the pointing direction of the parabolic antenna will be described.

  First, the worker visually checks the position of the parabolic antenna to be measured, and moves to an arbitrary position on the front side of the parabolic antenna to be measured. At this time, the mirror plate 40 of the pointing direction measuring device 1 needs to be a place where it is possible to project a parabolic antenna to be measured.

Next, the worker raises the four support legs 50 of the pointing direction measuring device 1 and places the pointing direction measuring device 1 on the ground via the support legs 50.
Next, the worker adjusts the lengths of the four support legs 50 while visually checking the leveling device 30 and checking the degree of horizontality so that the base plate 10 is horizontal. After the base plate 10 is adjusted to be horizontal, the base plate 10 is moved while maintaining the horizontal state of the base plate 10 to project the parabolic antenna in the second region 10 b of the base plate 10.

Next, as shown in FIG. 2, the horizontal direction of the parabola antenna is aligned with the horizontal line 14b while projecting the parabola antenna on the mirror plate 40 of the second area 10b. Be careful to keep it horizontal at that time. The horizontal line to be aligned with the horizontal direction of the parabolic antenna may be any horizontal line among the plurality of horizontal lines 14b.
Next, the protractor 20b is rotated to align "N" of the protractor 20b with the N pole of the compass.

  Then, the angle of the pointing direction of the parabolic antenna is measured by reading the difference in angle between the vertical line 14a and the north of "N" of the protractor 20b, in other words, the value of the scale of the protractor 20b indicated by the reference line 14c.

  As described above, according to the present embodiment configured as described above, the operator can simultaneously adjust the direction of the directional magnetic needle 20a and rotate the protractor 20b while looking at the antenna projected on the mirror plate 40, which is high. The angle of the pointing direction of the antenna can be measured with accuracy. In addition, measurement errors due to differences in workers can be reduced.

  Further, by eliminating the level difference between the protractor 20b and the scale 14 and making the surface even, it becomes possible to read the numerical value indicated by the reference line 14c easily and accurately.

  Moreover, in addition to the vertical line 14a for directivity direction confirmation, by adding a horizontal line 14b different in the 90 ° direction, the directivity direction of the antenna is aligned with the horizontal line 14b, and the value of the protractor 20b pointed to by the reference line 14c is read. By setting the angle to ± 90 degrees, it is possible to obtain the angle of the pointing direction of the antenna. Further, by making the vertical lines 14a and the horizontal lines 14b plural, the work of combining the antenna projected on the mirror plate 40 with the scale 14 becomes easy, and the workability can be improved.

  In addition, by mounting the leveling device 30, it is possible to maintain the base plate 10 and the azimuthal magnetic needle 20a in a horizontal state, and the azimuthal magnetic needle 20a accurately points north and south. This makes it possible to accurately measure the angle of the pointing direction of the antenna.

  Further, by providing the support legs 50 on the base plate 10, it is possible to make the base plate 10 stand alone and to adjust the levelness of the base plate 10. As a result, the pointing direction measuring instrument 1 can be placed on the ground and operated, so that no shaking occurs, and it becomes possible to stably measure the angle of the pointing direction of the antenna.

  In addition, since the support leg 50 is foldable, the pointing direction measuring device 1 can be miniaturized, and the pointing direction measuring device 1 can be carried in a space-saving manner.

  Further, the protractor 20b can be rotated by the operation below the compass 20 on the back side of the base plate 10 while viewing the mirror plate 40, the azimuthal magnetic needle 20a and the protractor 20b from above. This prevents the field of vision from blocking the mirror surface of the protractor 20b and the mirror plate 40, and makes it possible to measure the angle of the pointing direction of the antenna accurately and quickly.

  In addition, although the usage example which measures the angle of the directivity direction of an antenna in the pointing direction measuring device 1 in this embodiment was demonstrated, using for measuring the angle of the direction of the wire installed between power poles, for example It is possible to measure the angle of the direction if it is possible and the object reflected on the mirror plate 40 in the base plate 10 in the horizontal state.

  As mentioned above, although demonstrated per preferable embodiment of the pointing direction measuring device of this invention, this invention is not restrict | limited to the above-mentioned embodiment, It can change suitably.

  For example, in the above embodiment, the base plate 10 and the mirror plate 40 are integrated, but may be separate. Specifically, four support legs 50 are attached to a mirror surface plate 40 larger than the base plate 10 to form a table, and the base plate 10 having a scale 14, a compass 20, and a level scale 30 is formed thereon. It may be configured to be placed.

DESCRIPTION OF SYMBOLS 1 pointing direction measuring instrument 10 base plate 10a 1st area 10b 2nd area 12 hole part 14 scale 14a vertical line 14b horizontal line 14c reference line 20 compass 20a direction magnetic needle 20b protractor 20c housing 30 level board 40 mirror surface plate 50 support leg 50a leg member 50b adjustment mechanism

Claims (3)

A flat mirror body,
A base plate made of a flat transparent member,
An orientation magnetic needle fixed to the base plate and pointing on the surface of the base plate;
And a protractor rotatably mounted with respect to the center of the azimuthal magnetic needle.
A grid-like scale consisting of a plurality of vertical lines and a plurality of horizontal lines parallel to each other is displayed in an area near the azimuthal magnetic needle on the plate surface of the base plate, and a plurality of vertical lines and a plurality of horizontal lines are identified. One of the reference lines passes through the center of the compass
The directivity direction measuring instrument according to claim 1, wherein the mirror body is provided on the base plate and projects a measurement target in a directivity direction on a display area of the scale.   The pointing device according to claim 1, further comprising a leveler fixed to the base plate to indicate whether the base plate is horizontal or not. And a plurality of support legs fixed to the base plate,
The pointing direction measuring instrument according to claim 2, wherein the support leg has an adjusting mechanism for adjusting a length.

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