JP2014135570A - Radio-wave propagation path inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate inspection of the presence/absence of an obstacle with a simple configuration at low cost in a reflector plate installed on a radio-wave propagation path.SOLUTION: The radio-wave propagation path inspection device 1, located at a reflector plate 100 installed on a radio-wave propagation path and inspecting the presence/absence of an obstacle, includes: an indication section 2 that indicates an area to be deforested requiring removal of an obstacle on the radio-wave propagation path, and attachment means for attaching the indication section 2 onto the reflector plate 100 to direct a radio-wave propagation direction A.

Description

  The present invention relates to a radio wave propagation path inspection device that is disposed on a reflector installed in a radio wave propagation path and inspects for the presence or absence of an obstacle.

  For example, in transmission of radio waves by a microwave radio apparatus, a reflector is provided at a relay point to relay radio waves in a section where the line of sight is poor and the radio waves cannot be directly propagated. Since a relay point is often installed on a mountain or the like that can propagate radio waves over a wide range, it is necessary to periodically check whether the radio wave propagation path is blocked by trees or the like.

  In the conventional inspection, an operator climbs the reflector, visually confirms the direction of radio wave propagation from the four corners of the reflector, and determines whether or not logging is necessary based on the presence or absence of trees that obstruct the field of view. For this reason, on days with poor visibility, such as during heavy fog, it is difficult to guess the direction of radio wave propagation because the opposite antenna antenna or reflector that is the radio wave transmission partner cannot be viewed. In addition, there is a problem that the criteria for the determination of the necessity of felling, such as which range of trees to be felled at which height, is ambiguous and causes variations among workers.

  By the way, the technique regarding the radio wave propagation path obstruction confirmation scope used in the radio wave propagation path design in the radio propagation path or the inspection work for confirming the presence or absence of the obstruction by visual observation is known (for example, see Patent Document 1). In this technique, for example, a scale corresponding to the frequency of radio waves in a plurality of propagation paths is marked on the scale glass.

Japanese Utility Model Publication No. 06-002326

  However, the technique described in Patent Document 1 is a telescope with a built-in zoom lens, and has a problem that the configuration is complicated and the cost is high.

  Therefore, an object of the present invention is to provide a radio wave propagation path inspection device that can easily check the presence or absence of an obstacle at a low cost with a simple structure in a reflector installed in a radio wave propagation path.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a radio wave propagation path inspection device that is arranged on a reflector disposed in a radio wave propagation path and inspects for the presence or absence of an obstacle, A radio wave propagation comprising: a marking portion that marks an area in the radio wave propagation path where an obstacle needs to be removed; and an attachment means for attaching the marking portion to the reflector so as to face the radio wave propagation direction. It is a road inspection device.

  According to the present invention, when the marking unit is attached to the reflecting plate in the direction of radio wave propagation, the radio wave propagation path between the opposite side of the reflecting plate is marked as an area.

  According to a second aspect of the present invention, in the radio wave propagation path inspection device according to the first aspect of the present invention, the radio wave propagation path inspection device is disposed so as to be in contact with and away from the marking portion, and the marking portion is disposed toward the radio wave propagation direction. It is characterized by having an eyepiece part for confirming.

  According to a third aspect of the present invention, in the radio wave propagation path inspection device according to the first or second aspect, the marking portion is formed in a ring shape.

  According to a fourth aspect of the present invention, in the radio wave propagation path inspection device according to any one of the first to third aspects, the marking unit needs to immediately remove an obstacle in the radio wave propagation path. And a second marking unit for marking a second area that does not need to be immediately removed but requires follow-up observation.

  According to the first aspect of the present invention, since the radio wave propagation path to the opposite destination is marked as an area by the marking unit, the radio wave propagation path can be marked easily by anyone. For this reason, since it is possible to prevent variations in recognition of the radio wave propagation path by the operator, it is possible to prevent variations in determining whether or not it is necessary to cut down trees. Moreover, even when the antenna antenna or reflector of the radio wave transmission partner cannot be visually recognized due to poor visibility, the radio wave propagation path can be surely known by the marking unit. For this reason, the presence or absence of an obstacle can be confirmed accurately at any time.

  Further, since the radio wave propagation path inspection device is constituted by the marking portion and the attaching means, it is possible to inspect the presence or absence of an obstacle with a simple configuration and low cost. Furthermore, since no special operation is required, anyone can easily check regardless of the skill level of the operator.

  According to the second aspect of the present invention, since the sign section has the eyepiece for confirming that the sign section is arranged in the direction of radio wave propagation, anyone can accurately propagate the radio wave using the sign section. You can check the direction. For this reason, it is possible to prevent variations in the determination of the presence or absence of an obstacle by an operator.

According to the third aspect of the present invention, since the marking portion has a ring shape, the radio wave propagation path can be reliably marked with a simple configuration and low cost. Moreover, by being ring-shaped, it is possible to prevent snakes, birds and beasts and the like from entering the inside even if they are attached to the reflector on the mountain. Since it can be attached to the reflecting plate, it is not necessary to prepare a measurement tool including a GPS device, and therefore it is possible to cope with an emergency inspection. Furthermore, the radio wave propagation path to be displayed can be adjusted by changing the diameter of the ring.
According to the invention described in claim 4, the first marking unit can confirm the first area where the obstacle in the radio wave propagation path needs to be immediately removed, and the second marking unit can check the obstacle. It is possible to identify a second area where it is not necessary to remove the object immediately. That is, the possibility of cutting in the near future can be predicted by checking up to the second area where it is not necessary to immediately remove the obstacle. As a result, it is possible to grasp the point to be inspected with priority, so that effective inspection is possible and oversight can be prevented.

It is a side view which shows the state which attached the radio wave propagation path inspection apparatus which concerns on Embodiment 1 of this invention to the reflecting plate. It is a perspective view which shows the electromagnetic wave propagation path inspection apparatus of FIG. It is a side view which shows the electromagnetic wave propagation path inspection apparatus of FIG. It is a front view which shows the radio wave propagation path inspection apparatus of FIG. It is sectional drawing in the AA of the radio wave propagation path inspection apparatus of FIG. It is a figure which shows the state which has confirmed the presence or absence of an obstruction by the radio wave propagation path inspection apparatus of FIG. 1, (a) is a figure which shows the state without an obstruction in a radio wave propagation path, (b) is a wave propagation It is a figure which shows the state with an obstruction on a road. It is a top view which shows the state which attached the radio wave propagation path inspection apparatus of FIG. 1 to the reflecting plate. It is a front view which shows the marking part of the radio wave propagation path inspection apparatus concerning Embodiment 2 of this invention. It is a figure which shows the state which has confirmed the presence or absence of an obstruction by the radio wave propagation path inspection apparatus of FIG. 8, (a) is a figure which shows the state without an obstruction in a radio wave propagation path, (b) is a wave propagation It is a figure which shows the state with an obstruction on a road. It is a perspective view which shows the state which attached the radio wave propagation path inspection apparatus of FIG. 8 to the reflecting plate.

  The present invention will be described below based on the illustrated embodiments.

(Embodiment 1)
1 to 7 show Embodiment 1 of the present invention.

  As shown in FIG. 1, the radio wave propagation path inspection device 1 is disposed on a reflector 100 disposed in a radio wave propagation path, and checks the presence or absence of an obstacle (tree). As shown in FIG. 1, the display frame 2, the eyepiece 3, and the attachment means 4 are mainly provided.

  The marking frame 2 marks the radio wave propagation path between the opposing plate in the reflector 100 as an area. Here, the facing destination is an antenna antenna or reflecting plate 100 that is a facing destination that propagates radio waves. As shown in FIG. 5, the marking frame 2 includes a second marking frame (large diameter ring) 21 serving as a second marking portion, and a first marking portion disposed inside the large diameter ring 21. It is formed in a double ring shape including a first marking frame (small diameter ring) 22. The large-diameter ring 21 indicates a felling caution area as a second area that does not require immediate removal of trees but requires follow-up observation. It is set to be the size shown. In other words, the large-diameter ring 21 is set in size and shape so as to indicate an area that may enter a felling area when a tree grows after several months, for example. For this reason, as shown in FIG. 6 (a), if there is a tree in the large-diameter ring 21 at the time of inspection, it is not necessary to cut down immediately, but it grows due to growth or bends due to wind and snow. It is determined that it is necessary to observe whether or not it is within the range 22.

  The small-diameter ring 22 indicates a necessary cutting area as a first area where it is necessary to immediately remove trees in the radio wave propagation path, and the outer periphery of the small-diameter ring 22 indicates a necessary cutting area when attached to the reflector 100. It is set to be. In other words, the small-diameter ring 22 is set in size and shape so as to indicate an area where the incidence of radio waves between the reflecting plate 100 and the opposite destination is blocked by the tree. For this reason, as shown in FIG.6 (b), when a tree is contained in the small diameter ring 22 at the time of inspection, it determines with it being necessary to cut down immediately. The small-diameter ring 22 is disposed inside the large-diameter ring 21 via support portions 23 to 26.

  As shown in FIGS. 2 and 3, the eyepiece 3 is disposed so as to be in contact with the marking frame 2, and the marking frame 2 is disposed toward the radio wave propagation direction A as illustrated in FIG. It is for confirmation. The eyepiece 3 is formed in a ring shape having an outer diameter substantially equal to the large-diameter ring 21 of the marking frame 2, and is marked along the longitudinal direction of the attachment means 4 as shown in FIGS. 2 and 3. It is disposed on the same axis as the frame 2. The eyepiece 3 is for guiding the radio wave propagation direction A, that is, the peeping direction when confirming the necessary cutting area by the marking frame 2 of the radio wave propagation path inspection device 1. In other words, when looking through the eyepiece 3 so that the marking frame 2 is located at the center of the field of view, the radio wave propagation direction A can be accurately directed, and the tree over the radio wave propagation path It is now possible to check the presence or absence of this.

  The attachment means 4 is for attaching the marking frame 2 to the reflecting plate 100, and is made of a plate-like material as shown in FIGS. 2 and 3, and the eyepiece 3 is provided at one end in the longitudinal direction. The marking frame 2 is disposed on the other end side. This attachment means 4 can be fixed to the reflector 100 with an adhesive.

  The radio wave propagation path inspection device 1 having such a configuration is attached to a position where the opposite destination can be confirmed at one location on the outer peripheral edge of the reflector 100 and the presence or absence of an obstacle can be confirmed. In this embodiment, as shown in FIGS. 1 and 7, the radio wave propagation path inspection apparatus 1 has a side lower end portion of the reflector 100, an eyepiece 3 on the back side of the reflector 100, and a marking frame 2 It is attached via attachment means 4 so as to be on the front side.

  Next, the usage method and operation of the radio wave propagation path inspection apparatus 1 in this embodiment will be described.

  First, as shown in FIGS. 1 and 7, the radio wave propagation path inspection device 1 is attached to the reflector 100. At this time, the reflecting plate 100 that is the opposite destination, that is, the radio wave propagation direction A is confirmed by visual recognition from the reflecting plate 100, and the mounting position and mounting direction of the radio wave propagation path inspection device 1 are specified. In this embodiment, as shown in FIG. 1, the reflecting plate 100 that is the facing destination is specified by visual observation or a map from the back side of the side lower end portion of the reflecting plate 100.

  Then, with the position and orientation adjusted so that the marking frame 2 and the eyepiece 3 of the radio wave propagation path inspection device 1 are collinear with the reflector 100 at the opposite end, the attachment means 4 is made of an adhesive. Attached to the side lower end of the reflector 100.

  Next, inspection for the presence or absence of obstacles in the radio wave propagation path will be described.

  First, in a state where the operator stands on the back side of the reflector 100 so as to face the ring portion of the eyepiece 3, the operator looks through the eyepiece 3 so that the marking frame 2 is positioned at the center of the visual field.

  And the presence or absence of the tree in the large diameter ring 21 and the small diameter ring 22 is confirmed. Specifically, as shown in FIG. 6A, when there is a tree in the large diameter ring 21, but there is no tree in the small diameter ring 22, it is determined that there is no tree in the radio wave propagation path. . For this reason, although it is not necessary to cut trees immediately, it is determined that cutting will be required soon due to the growth of the trees. As shown in FIG. 6B, when a tree is contained in the small diameter ring 22, it is determined that there is a tree in the radio wave propagation path. For this reason, it is immediately determined that tree cutting is necessary, and tree cutting work is planned and implemented.

  Such an inspection operation is performed for each of the plurality of reflectors 100.

  As described above, the radio wave propagation path inspection device 1 can mark the radio wave propagation path 1 in an easy-to-understand manner by the marking frame 2. For this reason, since it is possible to prevent variations in recognition of the radio wave propagation path by the operator, it is possible to prevent variations in determining whether or not it is necessary to cut down trees. Further, even when the antenna antenna or reflector 100 of the radio wave transmission partner cannot be visually recognized due to poor visibility, the radio wave propagation path can be surely known by the marking frame 2. For this reason, the presence or absence of trees can always be confirmed accurately.

  Moreover, since the radio wave propagation path inspection device 1 is constituted by the marking frame 2, the eyepiece 3, and the attachment means 4, it is possible to inspect the presence or absence of trees with a simple configuration and low cost. Furthermore, since no special operation is required for inspection, anyone can easily inspect regardless of the skill level of the operator.

  Furthermore, since it has the eyepiece part 2 for confirming that the marking frame 2 is arrange | positioned toward the electromagnetic wave propagation direction A, anyone confirms the electromagnetic wave propagation direction A with the marking frame 2 correctly. be able to. For this reason, it is possible to prevent variations in the determination of the presence or absence of trees by the operator.

  Furthermore, since the marking frame 2 has a ring shape, the radio wave propagation path can be reliably marked with a simple configuration and low cost. Moreover, by being ring-shaped, it is possible to prevent snakes and birds and beasts from entering the interior even when they are still on the mountain. Since it can be attached to the reflecting plate 100, it is not necessary to prepare a measuring tool including a GPS device, so that it is possible to cope with an emergency check. Furthermore, the radio wave propagation path 1 to be marked can be adjusted by changing the diameter of the ring of the marking frame 2.

  Since the necessity of tree cutting is determined based on the presence or absence of trees in the small-diameter ring 22 of the marking frame 2, the necessity determination of tree cutting can be performed under the same conditions regardless of the operator. For this reason, the same result is obtained regardless of who inspects, and variations in determination results by the operator can be prevented. In addition, it is possible to plan a felling plan systematically by setting the necessity judgment of tree felling to the same condition.

  In addition, the small diameter ring 22 enables confirmation of a necessary logging area where an obstacle in the radio wave propagation path needs to be immediately removed, and the large diameter ring 21 confirms a logging attention area where the obstacle does not need to be removed immediately. Is possible. That is, the possibility of cutting in the near future can be predicted by confirming to the cutting attention area where it is not necessary to remove the obstacle immediately. As a result, it is possible to grasp the points to be inspected with priority, so that effective inspection is possible and oversight can be prevented.

(Embodiment 2)
8 to 10 show a second embodiment of the present invention. In this embodiment, the configuration of the marking unit 5 is different from the marking frame 2 of the first embodiment. For this reason, about the structure equivalent to Embodiment 1, the description is abbreviate | omitted by attaching | subjecting the code | symbol same or corresponding.

  As shown in FIGS. 8 to 10, the marking portion 5 includes a ring portion 51 and a substantially L-shaped outer frame portion 52. The ring part 51 is set so that the outer peripheral edge has a size indicating a necessary cutting area when attached to the reflecting plate 100, and is disposed on the outer frame part 52 via the horizontal part 53. The outer frame portion 52 indicates a felling caution area, and a vertical portion 52a and a horizontal portion 52b are formed substantially orthogonal to each other. That is, as shown in FIG. 9A, when a tree is placed in the outer frame portion 52, it is determined that it will be necessary to cut down soon, and as shown in FIG. 9B, the inside of the ring portion 51 It is judged that it is necessary to cut down immediately if there is a tree.

  In the reflector 100, for example, the upper part of the radio wave propagation path is open on the reflector 100, and the upper part of the sign part 5 does not require confirmation of an obstacle including a tree, for example, a place where the tree grows only from below. Install.

  In this embodiment, since the marking unit 5 is configured by the ring unit 51 and the substantially L-shaped outer frame unit 52, the radio wave propagation path is reliably labeled with a simple configuration and low cost. can do. Moreover, it is possible to prevent snakes and birds and beasts from entering the interior even when they are arranged on the mountain. Since it can be attached to the reflecting plate 100, it is not necessary to prepare a measuring tool including a GPS device, so that it is possible to cope with an emergency check. Furthermore, the radio wave propagation path to be displayed can be adjusted by changing the inner circumference of the ring part 51 or the outer frame part 52.

  Although the embodiments of the present invention have been described above, the specific configuration is not limited to these embodiments, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the marking frame 2 has been described as a double ring shape having the large diameter ring 21 and the small diameter ring 22, but it may be a triple ring. By configuring in this way, the determination of whether or not logging is necessary is further subdivided into, for example, dividing the required logging area into two, and dividing it into a required logging area and an immediate logging area that requires logging on the spot. May be.

  Of course, the sign frame 2 is not ring-shaped but may have other shapes including a quadrangular shape.

  Further, the marking frame 2 may be slidably disposed in the longitudinal direction of the attachment means 4. By comprising in this way, an attachment position can be easily adjusted on-site at the time of attachment.

  Furthermore, a plurality of radio wave propagation path inspection devices 1 may be arranged on the reflector 100. In that case, for example, the two radio wave propagation path inspection devices 1 may be arranged so as to form a predetermined angle so as to be close to each other on the eyepiece 3 side and to be separated from each other on the marking frame 2 side. By configuring in this way, it becomes possible to confirm a plurality of directions, and it is possible to more reliably check the presence or absence of an obstacle.

1 Radio wave propagation path inspection device 2 Marking frame (marking part)
21 2nd marking frame (large diameter ring, 2nd marking part)
22 1st marking frame (small diameter ring, 1st marking part)
3 Eyepiece 4 Mounting means 100 Reflector A Radio wave propagation direction

Claims (4)

A radio wave propagation path inspection device that is disposed on a reflector disposed in a radio wave propagation path and inspects for the presence or absence of obstacles,
A marking section for marking an area in the radio wave propagation path where an obstacle needs to be removed;
An attachment means for attaching the marking portion to the reflector so as to face the radio wave propagation direction;
A radio wave propagation path inspection apparatus comprising:   The radio wave propagation path inspection apparatus according to claim 1, further comprising an eyepiece unit for confirming that the marking unit is disposed toward the radio wave propagation direction.   The radio wave propagation path inspection device according to claim 1, wherein the marking portion is formed in a ring shape. The marking unit includes a first marking unit for marking a first area where an obstacle in the radio wave propagation path needs to be immediately removed, and a second area for marking a second area where the obstacle need not be removed immediately. And a sign part of
The radio wave propagation path inspection device according to any one of claims 1 to 3, wherein

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