Communication device and communication system

Abstract

To provide a communication device that facilitates network construction work corresponding to the progress of construction when a high-rise building is constructed.SOLUTION: A communication device includes an antenna with a plurality of antenna elements that selects a reception target satellite, from which radio waves are received, from a plurality of satellites deployed in low earth orbit, and that drives to adjust an azimuth angle and elevation angle relative to the reception target satellite, and a fixing member that fixes the antenna to the upper part of a guy support that supports via a wire a jib of a tower crane.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a communication device and a communication system. [Background technology]

[0002] When constructing a high-rise building, mobile phone signals cannot be received on the higher floors (for example, at heights of 100 m or more above ground level).

[0003] Patent Document 1 discloses a technology that provides a communications environment to the upper floors of a building under construction by connecting optical fiber lines from the ground to a router and implementing a mesh network function using multiple repeaters. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-153235 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the technology of Patent Document 1, it was necessary to repeat network construction work such as adding repeaters as construction progressed, which was time-consuming.

[0006] The present invention has been made in consideration of the above, and aims to provide a communication device and a communication system that facilitates network construction work in accordance with the progress of construction when constructing a high-rise building. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the object, a communication device according to one embodiment of the present invention is characterized in that it comprises an antenna having a plurality of antenna elements that select a target satellite from which to receive radio waves from a plurality of satellites deployed in low Earth orbit, and is driven to adjust the azimuth angle and elevation angle relative to the target satellite, and a fixing member that fixes the antenna to the upper part of a guy support that supports the jib of a tower crane via a wire.

[0008] In addition, a communication device according to one aspect of the present invention is characterized in that the multiple antenna elements adjust azimuth angles and elevation angles with respect to the target satellite so as to maximize reception sensitivity from the target satellite.

[0009] In addition, in a communication device according to one aspect of the present invention, the fixing member fixes the antenna to a corner portion of a handrail located at the upper part of the guy support.

[0010] In addition, a communication device according to one embodiment of the present invention is characterized in that the antenna has a rear member located behind the receiving surface that receives radio waves, and the fixing member fixes the rear member to a corner portion of the handrail.

[0011] Moreover, a communication system according to one aspect of the present invention is characterized by comprising a communication device and a tower crane in which the communication device is attached to the guy support. Effect of the Invention

[0012] According to the present invention, it is possible to realize a communication device and a communication system that facilitates network construction work in accordance with the progress of construction when constructing a high-rise building. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a schematic diagram showing a configuration of a communication system including a communication device according to the present invention. [Diagram 2] FIG. 2 is an enlarged view of the guy support shown in FIG. [Diagram 3] FIG. 3 is a top view of FIG. [Figure 4] FIG. 4 shows an antenna attached to the corner of a guy support handrail. [Diagram 5] FIG. 5 is a top view of the fixing member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of a communication device and a communication system according to the present invention will be described with reference to the drawings. Note that the present invention is not limited to these embodiments. The present invention can be generally applied to communication devices and communication systems.

[0015] In addition, in the drawings, the same or corresponding elements are appropriately labeled with the same reference numerals. It should be noted that the drawings are schematic, and the dimensional relationships and ratios of each element may differ from reality or may differ depending on the model of tower crane. The drawings may also include parts with different dimensional relationships and ratios.

[0016] (Embodiment) [Configuration of communication system] Fig. 1 is a schematic diagram of a communication system including a communication device according to the present invention. As shown in Fig. 1, the communication system 1 includes a building 2, a tower crane 3, a communication device 4, a communication network 5, and a target satellite 6. The communication system 1 provides a communication environment for the building 2 under construction.

[0017] Structure 2 is a high-rise building under construction.

[0018] The base of the tower crane 3 is fixed to the frame of the structure 2 under construction. The tower crane 3 includes a mast 31 extending upward from the base, a rotatable rotating base 32 attached to the mast 31, a jib 33 extending forward from the rotating base 32, wires 34 such as a hoisting wire for raising and lowering the jib 33 or a hoisting wire for hoisting the lifted object, and guy supports 35 for supporting the jib 33 via the wires 34.

[0019] The communication network 5 provides a communication environment for the building 2 under construction. The communication network 5 includes mesh WiFi 51 to 53, routers 54 and 55, and an optical fiber cable 56. On the upper floors of the building 2, the router 54 is connected to the communication device 4, and wireless communication is provided by the mesh WiFi 51. On the lower floors of the building 2, the router 55 is connected to the optical fiber cable 56, and wireless communication is provided by the mesh WiFi 52 and 53. However, wireless communication may be provided by local 5G instead of the mesh WiFi 51 to 53.

[0020] The target satellite 6 is a satellite selected as a target for receiving radio waves from among multiple (several hundred to several tens of thousands) satellites deployed in low Earth orbit. The target satellite 6 may be, for example, the satellite closest to the communication device 4, but may also be selected depending on the position and performance of each satellite. Also, a test for receiving radio waves from multiple satellites may be performed, and the target satellite 6 may be selected depending on the results.

[0021] [Configuration of communication device] Fig. 2 is an enlarged view of the guy support shown in Fig. 1. As shown in Fig. 2, the communication device 4 is attached to a handrail 351 located on the upper part of the guy support 35 of the tower crane 3.

[0022] Fig. 3 is a top view of Fig. 2, and corresponds to a view seen from an arrow A in Fig. 2. As shown in Fig. 3, the communication device 4 is attached to a corner portion 351a of the handrail 351 with a U-bolt or the like.

[0023] 4 is a diagram showing a state in which an antenna is attached to a corner of a handrail of a guy support. As shown in FIG. 4, the communication device 4 includes an antenna 41 and a fixing member .

[0024] The antenna 41 has a main body 411 in the form of a flat plate, housing multiple antenna elements therein, and a back member 412 located behind the receiving surface that receives radio waves. The antenna elements are driven to adjust the azimuth angle and elevation angle with respect to the target satellite 6 so as to maximize the reception strength from the target satellite 6. At this time, the antenna elements inside the main body 411 are driven, but the main body 411 is stationary.

[0025] 5 is a top view of the fixing member. As shown in FIG. 5, the fixing member 42 is an L-shaped flat plate member, and multiple screw holes 42a and 42b are formed. A screw or the like is screwed into the screw 42a to attach the back member 412 of the antenna 41. A corner portion 351a of the handrail 351 located at the top of the guy support 35 of the tower crane 3 is fixed by screwing a U-bolt or the like into the screw hole 42b. As a result, the fixing member 42 fixes the antenna 41 to the corner portion 351a of the handrail 351 located at the top of the guy support 35. The fixing member 42 also fixes the back member 412 and the corner portion 351a of the handrail 351.

[0026] According to the communication device 4 described above, since the communication device 4, the mesh WiFi 51, and the router 54 also move upward when the tower crane 3 is climbing, there is no need to reconstruct the communication environment on the higher floors. Therefore, when constructing a high-rise building, the network construction work according to the progress of construction is easy because it only requires the expansion of the network on the lower floors.

[0027] Furthermore, according to the communication device 4, the antenna 41 is attached to the handrail 351 located at the top of the guy support 35, so there are no obstacles above the antenna 41, and the radio wave receiving sensitivity can be improved.

[0028] Furthermore, according to the communication device 4, the antenna 41 is fixed to the corner portion 351a of the handrail 351, and the antenna 41 does not protrude inside the corner portion 351a, thereby preventing it from interfering with people performing inspections or other work inside the handrail 351.

[0029] In addition, according to the communication device 4, the antenna 41 is attached to the guy support 35 located at the top of the rotating base 32, and when the jib 33 is rotated, the antenna 41 also moves, so that the reception sensitivity of the antenna 41 is not affected by the movement of the jib 33.

[0030] Also, some antennas that receive radio waves from the target satellite 6 are driven so that the entire receiving surface of the antenna can adjust the azimuth and elevation angles relative to the target satellite 6. It is not preferable to install such antennas on the upper floors of a high-rise building, as there is a risk of damage due to the influence of wind. In contrast, with antenna 41, only the antenna element inside main body 411 is driven, reducing the risk of damage.

[0031] In addition, each configuration illustrated in the above embodiment is a functional schematic, and does not necessarily have to be physically configured as illustrated. In other words, the form of distribution and integration of each device and component is not limited to that illustrated, and all or a part of them can be functionally or physically distributed and integrated in any unit according to various usage conditions, etc. [Explanation of symbols]

[0032] 1. Communication Systems 2 Buildings 3. Tower Crane 4. Communications equipment 5. Communication Network 6. Receiving satellites 31 Mast 32 Swivel table 33 Jib 34 Wire 35 Guy Support 41 Antenna 42 Fixing member 42a screw hole 51, 52, 53 Mesh WiFi 54, 55 Router 56 Fiber-optic cable 351 Handrail 351a Corner section 411 Main body 412 Back member

Claims

1. an antenna having a plurality of antenna elements which are driven to select a target satellite from which radio waves are to be received from a plurality of satellites deployed in low earth orbit and adjust an azimuth angle and an elevation angle with respect to the target satellite; A fixing member for fixing the antenna to an upper part of a guy support that supports a jib of a tower crane via a wire; A communication device comprising:

2. 2. The communication device according to claim 1, wherein the plurality of antenna elements adjust azimuth angles and elevation angles with respect to the target satellite so as to maximize reception sensitivity from the target satellite.

3. 2. The communication device according to claim 1, wherein the fixing member fixes the antenna to a corner portion of a handrail located above the guy support.

4. The antenna has a back member located on the back side of a receiving surface that receives radio waves, The communication device according to claim 3 , wherein the fixing member fixes the back member and a corner portion of the handrail.

5. A communication device according to claim 1; a tower crane, the communication device being attached to the guy support; A communication system comprising:

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