JP6658277B2 - Obstacle confirmation device and obstacle confirmation method - Google Patents

Description

  The present invention relates to an obstacle confirmation device and an obstacle confirmation method provided on a reflector used for microwave wireless communication and for confirming the presence or absence of an obstacle near the reflector.

  A reflector used for microwave wireless communication is provided to reflect and relay a radio wave transmitted from a wireless device of a transmitting station, and to transmit the same to a wireless device of a receiving station. If there is an obstacle in the vicinity of the reflection plate that hinders the reception of the radio wave, it causes a decrease in the electric field strength of the radio wave. Therefore, it is necessary to periodically check for such an obstacle. As such an obstacle, for example, there is a case where a tree or the like naturally grows. However, such reflectors are often installed in mountainous areas, and are sometimes installed at a height of, for example, about 20 m from the ground. It is not easy to check for things.

  Therefore, for example, a radio wave propagation path display plate used by being attached to a lower end of a reflection plate is known (for example, see Patent Document 1). This radio wave propagation path display plate is provided on a plate-shaped main body with a long and narrow display hole for specifying the incident direction of radio waves penetrating left and right, and visually observes the radio wave propagation path from this display hole. To check for obstacles.

  Further, for example, a radio wave propagation path inspection device used by being attached to a lower side portion of a reflector is known (for example, see Patent Document 2). This radio wave propagation path inspection device is provided with a display hole for specifying the incident direction and reflection direction of the radio wave, and visually checks the radio wave propagation path from this display hole to check for the presence of an obstacle. It is.

JP 2013-057856 A JP 2014-135570A

  However, the radio wave propagation path display plate described in Patent Literature 1 and the radio wave propagation path inspection device described in Patent Literature 2 are both directly attached to a reflection plate to visually observe the radio wave propagation path, and It involves dangerous work. Further, it is not easy to install such a device on the reflection plate.

  Therefore, the present invention does not require an operator to visually check at a high place, and an obstacle confirming apparatus and an obstacle confirming method capable of easily confirming whether or not there is an obstacle near a reflector. The purpose is to provide.

  In order to solve the above-mentioned problems, the invention according to claim 1 is provided on a reflector used for microwave radio communication, and is capable of confirming, in the vicinity of the reflector, the presence or absence of an obstacle that blocks transmission and reception of radio waves. An object checking device, comprising: a guide disposed along an outer edge of the reflector, a pedestal moving in accordance with the guide, and an imaging device installed on the pedestal for photographing a reflection direction of the reflector. And an operation unit for operating the unit, the pedestal unit, and the photographing unit.

  According to the present invention, the guide portion is provided along the outer edge of the reflector, and the pedestal portion on which the photographing portion is installed is moved according to the guide portion to perform photographing. Further, an operation unit for operating the pedestal unit and the imaging unit is provided.

  According to a second aspect of the present invention, in the obstacle confirmation device according to the first aspect, the pedestal unit detects a servomotor for moving the pedestal unit by operating the operation unit, and detects a movement state of the pedestal unit. And an acceleration sensor.

  According to a third aspect of the present invention, in the obstacle confirmation device according to any one of the first and second aspects, the operation unit is a remote controller that remotely controls the pedestal unit and the imaging unit. It is characterized by.

  The invention according to claim 4 is an obstacle confirming method for confirming the presence or absence of an obstacle that blocks transmission and reception of radio waves in the vicinity of a reflector used for microwave wireless communication, wherein the obstacle is arranged along an outer edge of the reflector. Moving the pedestal portion according to the provided guide portion, taking an image of the reflection direction of the reflector by the imaging portion provided on the pedestal portion, and determining the presence or absence of the obstacle based on the image obtained by the imaging. It is characterized by.

  According to a fifth aspect of the present invention, in the obstacle confirmation method according to the fourth aspect, the photographing is performed at a plurality of locations on the guide portion, and the determination of the presence or absence of the obstacle is performed at the plurality of locations. The determination is made based on a synthesized image obtained by synthesizing the plurality of images.

  According to a sixth aspect of the present invention, in the obstacle confirmation method according to the fifth aspect, the reflector is formed in a substantially rectangular shape, and the photographing is performed by the guide portion near a vertex of the reflector. Features.

  According to the first and fourth aspects of the present invention, the pedestal moves according to the guide, and the image is taken by the photographing unit installed on the pedestal. It is possible to confirm the presence or absence of an obstacle near the plate. Further, since the operation unit for operating the pedestal unit and the photographing unit is provided, it is not necessary to perform a visual check operation at a high place where the reflector is installed.

  According to the second aspect of the present invention, since the pedestal portion includes the servomotor and the acceleration sensor, the horizontal position of the camera can be maintained, and an appropriate image can be taken.

  According to the third aspect of the present invention, since the operation unit is constituted by the remote controller, it is not necessary for the operator to visually check the work at a high place where the reflector is installed. You can check.

  According to the fifth aspect of the present invention, the photographing unit performs photographing at a plurality of locations on the guide unit, and the determination of the presence or absence of an obstacle is performed using a composite image obtained by combining images captured at the multiple locations. You can check the presence of things.

  According to the sixth aspect of the present invention, the photographing unit performs photographing near the vertices of the reflector formed in a substantially rectangular shape, and determines the presence or absence of an obstacle based on a combined image obtained by combining images photographed at these positions. Is performed, the presence or absence of an obstacle can be confirmed more accurately.

FIG. 1 is a front view showing an appearance in a state where an obstacle confirmation device 1 according to an embodiment of the present invention is provided on a reflector 10. FIG. 2 is a right side view showing the appearance of the obstacle confirmation device 1 and the reflection plate 10 of FIG. 1. FIG. 2 is a schematic block diagram illustrating functions of a pedestal unit 3 of FIG. 1. FIG. 2 is a front view showing a state where trees are growing in front of the obstacle confirmation device 1 of FIG. 1. FIG. 2 is a schematic diagram showing a state where images captured by the obstacle confirmation device 1 of FIG. 1 are combined.

  Hereinafter, the present invention will be described based on the illustrated embodiment.

  1 to 5 show an obstacle confirmation device 1 according to an embodiment of the present invention. FIG. 1 is a front view showing the appearance of the state in which the obstacle confirmation device 1 is provided on the reflector 10, and FIG. 2 is a right side view showing the appearance of the obstacle confirmation device 1 and the reflector 10 in FIG. 1. FIG. 3 is a schematic block diagram showing the function of the pedestal unit 3 of FIG. As shown in FIG. 1, the obstacle confirmation device 1 is provided on a reflector 10 used for microwave radio communication, and confirms the presence or absence of an obstacle near the reflector 10 that blocks transmission and reception of radio waves. The apparatus mainly includes a rail (guide unit) 2, a pedestal unit 3, a camera (photographing unit) 4, and a remote controller (operation unit) 5.

  The rail 2 is disposed along the right side surface, the left side surface, and the bottom surface of the outer edge of the reflector 10 formed in a substantially rectangular shape, and is for determining and guiding the movable range of the pedestal portion 3. For example, the base member 3 is formed of a metal such as a steel material in a rod shape so as to hold a wheel (not shown) of the pedestal portion 3. The rail 2 includes a rail 21 formed on the right side of the reflector 10, a rail 22 formed on the left side of the reflector 10, and a rail 23 formed on the bottom of the reflector 10. I have.

  The pedestal part 3 is a self-propelled trolley movable on the rail 2, on which a camera 4 is mounted, and the remote control 5 is operated to operate the rail 21 in the direction of arrow A and the rail 22 in the direction of arrow B. 23 is provided so as to be freely movable in the direction of arrow C. The pedestal unit 3 includes an acceleration sensor 31, a servomotor 32, and a control unit 33, as shown in FIG. The acceleration sensor 31 is a sensor for detecting a force applied to the pedestal 3, and can detect a moving state of the pedestal 3. The servo motor 32 is a motor for driving the pedestal 3 to move on the rail 2. The control unit 33 is a device for controlling the acceleration sensor 31 and the servomotor 32, and includes, for example, a CPU (Central Processing Unit).

  The camera 4 is mounted on the pedestal unit 3 and moves on the rail 2 to photograph the front side of the reflector 10 by operating the remote controller 5. For example, the camera 4 is configured by a CCD (Charge Coupled Device) or the like. ing. Image data captured by the camera 4 is stored in a memory or the like built in the camera 4 and transmitted to the remote controller 5.

  The remote controller 5 is a device that can remotely control the pedestal unit 3 and the camera 4 from a position separated from the place where the reflection plate 10 is installed, for example, from the ground. Moving, the camera 4 is configured to take a picture. Therefore, the pedestal unit 3, the camera 4, and the remote controller 5 have a transmission / reception function (not shown) for transmitting / receiving operation signals. The remote controller 5 further includes a determination unit (not shown) that combines images transmitted by the camera 4 and determines whether there is an obstacle.

  The reflection plate 10 is a device used for microwave wireless communication, and is provided for reflecting and relaying radio waves transmitted from a wireless device of a transmitting station, and sending the same to a wireless device of a receiving station. Such a reflector 10 is used mainly in wireless communication in the 3 GHz to 30 GHz band in microwave wireless communication, and in order to maintain the electric field strength of radio waves, there is no fixed obstacle. (Propagation in the line of sight) is required. Therefore, such a reflection plate 10 is provided mainly in a mountainous portion. In addition, in order to maintain the received electric field strength of radio waves and avoid fixed obstacles, it is necessary to install the antenna at a height of about 20 m, for example, as shown in FIGS. ing.

  Next, an obstacle confirmation method by such an obstacle confirmation device 1 will be described below.

  FIG. 4 is a front view showing a state in which trees are growing in front of the obstacle confirmation device 1 in FIG. 1, and FIG. 5 shows a state in which images captured by the obstacle confirmation device 1 in FIG. It is a schematic diagram. As shown in FIG. 4, when trees J are overgrown in front of the reflection plate 10, the reception electric field strength of the radio wave is reduced. Therefore, in order to detect an obstacle such as the tree J, the following obstacle confirmation method is performed.

  First, the pedestal 3 and the camera 4 are moved according to the rails 21, 22 and 23 by operating the remote controller 5. Then, the pedestal part 3 moves by the drive of the servomotor 32. Then, the user operates the remote controller 5 to take a picture with the camera 4. Then, the camera 4 performs photographing, stores the image data in the memory, and transmits the image data to the remote controller 5. Thereafter, the determination unit of the remote controller 5 determines whether an obstacle such as a tree J is reflected from the transmitted image data.

  Such image capturing and determination of the presence or absence of an obstacle based on image data are performed, for example, as follows. By operating the remote controller 5, first, the pedestal portion 3 moves to the upper end of the rail 21, and an image is taken by the camera 4 at this position. The image at this time is, for example, an image P1 shown in FIG. Next, the pedestal part 3 moves to the lower end of the rail 21 (the right end of the rail 23), and an image is taken by the camera 4 at this position. The image at this time is, for example, an image P2 shown in FIG. Similarly, the pedestal portion 3 moves to the rail 23 and moves to the left end of the rail 23 (the lower end of the rail 22), and the camera 4 performs photographing at this position. The image at this time is, for example, an image P3 shown in FIG. Further, the pedestal portion 3 moves to the rail 22 and moves to the upper end of the rail 22, and the camera 4 performs photographing at this position. The image at this time is, for example, an image P4 shown in FIG.

  Thereafter, the determination unit of the remote controller 5 adjusts the transmitted image data of the images P1, P2, P3, and P4 to one image according to the positions of the upper and lower ends of the rail 21 and the lower and upper ends of the rail 22. To generate a composite image P10. At this time, for example, overlapping portions of the images P1, P2, P3, and P4 are determined, and the portions are determined to be the same and combined. Further, the determination unit of the remote controller 5 analyzes the composite image P10 to determine whether an obstacle such as the tree J is reflected. This determination is made, for example, by storing past image data in which no obstacle exists and analyzing a difference from the image data.

  As described above, according to the obstacle confirmation device 1, the pedestal 3 is moved to the upper end and the lower end of the rail 21 and the lower end and the upper end of the rail 22 by operating the remote controller 5, and the photographing by the camera 4 is performed. The images P1, P2, P3, and P4 obtained by the photographing are combined to generate a combined image P10, which is analyzed to determine the presence or absence of an obstacle. Accordingly, it is possible to confirm the presence or absence of an obstacle, for example, a tree J near the reflector 10. In addition, since the camera 4 is moved by the operation of the remote controller 5 to perform photographing, it is not necessary to work at a high place where the reflector 10 is installed.

  In addition, since the pedestal 3 includes the acceleration sensor 31 and the servomotor 32, the horizontal position of the camera 4 can be maintained, and an appropriate image can be taken.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like within a range not departing from the gist of the present invention, the present invention is not limited thereto. Included in the invention. For example, in the above-described embodiment, the image data captured by the camera 4 is configured to be stored in a memory or the like built in the camera 4, but the camera 4 is provided with a communication function, and an image is acquired by remote control. May be.

  Further, in the above-described embodiment, the photographing by the camera 4 is performed at the upper end of the rail 21 and the upper end of the rail 22, but the photographing may be performed at another position. Further, the number of photographing locations may be increased or decreased.

1 Obstacle confirmation device 2, 21, 22, 23 Rail (guide part)
3 pedestal section 4 camera (photographing section)
5 Remote control (operation unit)
10 Reflector 31 Accelerometer 32 Servomotor 33 Controller P1, P2, P3, P4 Image P10 Composite image

Claims (6)

An obstacle confirmation device provided on a reflection plate used for microwave wireless communication and capable of confirming the presence or absence of an obstacle that blocks transmission and reception of radio waves in the vicinity of the reflection plate,
A guide portion arranged along the outer edge of the reflection plate,
A pedestal portion that moves according to the guide portion;
An imaging unit installed on the pedestal unit and imaging the reflection direction of the reflection plate,
An operation unit that operates the pedestal unit and the imaging unit;
An obstacle confirmation device comprising: The pedestal,
A servomotor for moving the pedestal unit by operating the operation unit;
An acceleration sensor for detecting a moving state of the pedestal portion,
The obstacle confirmation device according to claim 1, further comprising: The operation unit is a remote controller that remotely controls the pedestal unit and the imaging unit.
The obstacle confirmation device according to claim 1 or 2, wherein In the vicinity of a reflector used for microwave radio communication, an obstacle confirmation method for confirming the presence or absence of an obstacle that blocks transmission and reception of radio waves,
Move the pedestal according to the guide disposed along the outer edge of the reflector,
Performing imaging in the reflection direction of the reflector by an imaging unit installed on the base,
Determining the presence or absence of the obstacle based on the image obtained by the photographing,
An obstacle confirmation method characterized by the following. The photographing is performed at a plurality of locations on the guide section,
The determination of the presence or absence of the obstacle is determined based on a combined image obtained by combining a plurality of the images obtained by the imaging performed at the plurality of locations.
The obstacle confirmation method according to claim 4, wherein The reflector is formed in a substantially rectangular shape,
The photographing is performed by the guide portion near the vertex of the reflector,
The method according to claim 5, wherein:

Images