CN113940009B - Communication system based on waveguide antenna - Google Patents
Communication system based on waveguide antenna Download PDFInfo
- Publication number
- CN113940009B CN113940009B CN202080043248.XA CN202080043248A CN113940009B CN 113940009 B CN113940009 B CN 113940009B CN 202080043248 A CN202080043248 A CN 202080043248A CN 113940009 B CN113940009 B CN 113940009B
- Authority
- CN
- China
- Prior art keywords
- radio wave
- waveguide antenna
- communication system
- waveguide
- leakage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 84
- 230000007613 environmental effect Effects 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 70
- 238000012544 monitoring process Methods 0.000 abstract description 18
- 238000011156 evaluation Methods 0.000 description 12
- 238000005259 measurement Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 239000004566 building material Substances 0.000 description 10
- 238000007689 inspection Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 241000700605 Viruses Species 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010019345 Heat stroke Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/12—Hollow waveguides
- H01P3/127—Hollow waveguides with a circular, elliptic, or parabolic cross-section
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/22—Longitudinal slot in boundary wall of waveguide or transmission line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Near-Field Transmission Systems (AREA)
- Waveguide Aerials (AREA)
- Waveguides (AREA)
Abstract
The invention provides a communication system based on a waveguide antenna, which can be used repeatedly by reliably transmitting monitoring information and the like of a construction site to a monitoring center and the like with a simple structure and freely mounting and dismounting the system. A waveguide antenna-based communication system is constituted by a radio wave leakage unit (2) and a radio wave non-leakage unit (3), wherein the radio wave leakage unit (2) internally transmits radio waves and leaks the radio waves from a part of a side wall, the radio wave non-leakage unit (3) connects the radio wave leakage unit (2) and an input connector (6) in a length-adjustable manner through a single pipe, and the radio wave non-leakage unit (3) connects the input connector (6) to a wireless access point so as not to leak the radio waves, and performs wireless communication between a wireless device and a wireless terminal through the leaked radio waves among the radio waves transmitted from the wireless access point.
Description
Technical Field
The present invention relates to a communication system based on a waveguide antenna, and in particular to a communication system based on the following waveguide antenna: the waveguide antenna having the radio wave leakage portion for leaking radio waves is used for effectively using the waveguide antenna as a waveguide for wireless communication in a vertical system in the temporary installation of a construction site such as a high-rise building, and a wireless communication network is formed by a wireless mesh network in a planar direction in each layer of the high-rise building, and the waveguide antenna can be used as it is for a device to be installed in a main form.
Background
In recent construction sites such as buildings and civil engineering structures, it is desired to perform environmental monitoring at the construction sites using various environmental sensors, thereby preventing a complete disaster at each construction site and preventing accidents of site workers. In addition, IT is desired to realize high quality control in site operations by performing various site operation inspections using IT equipment and acquiring construction data.
The environmental monitoring includes, for example, measurement of weather conditions such as air temperature, humidity, rainfall, wind direction, wind speed, and snow accumulation in a construction site, and measurement of oxygen concentration, carbon dioxide concentration, carbon monoxide concentration, generation of toxic gas, generation of combustible gas, and the like. The measurement results of these environmental monitoring are preferably collected at the construction site and transmitted as communication data to a monitoring center or the like provided in the construction site or at a remote location via a wireless LAN or the like. By the environment monitoring and the communication system of the measurement result, the fire disaster in the construction site, poisoning caused by toxic gas of site staff, explosion caused by combustible gas and infection caused by virus can be prevented.
Further, by the communication system of the environmental monitoring and the measurement results thereof, for example, storm, sun shine, snow, strong wind, storm, etc. are predicted in advance from the measurement of meteorological data in a construction site, and it is possible to take measures against the health of field workers such as heatstroke, measures against the breakage or damage of building materials due to strong wind, measures against the damage of building decorative materials due to sudden storm in construction, etc. in advance.
As a system similar to the present waveguide antenna-based communication system, there is a leaky coaxial system using LCX (leaky coaxial cable). The leaky coaxial system is a radio broadcasting system that transmits radio wave signals to a terminal device or the like by using a transmission cable for radio communication, and is a system in which a slit is provided in the leaky coaxial cable and electromagnetic waves leaking from the slit are used as an antenna.
Patent document 1 discloses a wireless communication system which is easy to install and remove and which can be suitably used for a temporary communication system of a high-rise building under construction. Here, it is described that a hollow waveguide capable of extending in the vertical direction in accordance with the progress of construction is provided inside a high-rise building, an antenna of a base station is disposed inside the hollow waveguide, openings are formed in the hollow waveguide in each floor of the high-rise building, and tubular radiation guides protruding from the circumferential edges of the openings to the indoor side are provided.
Prior art literature
Patent document 1: japanese patent laid-open publication No. 2010-159764
Patent document 2: japanese patent laid-open publication No. 2008-28549
Patent document 3: japanese patent laid-open publication No. 2016-149550
Conventionally, in a construction site, information transmission to a place where telephone lines (3G, 4G, 5G) do not reach cannot be performed with respect to acquired environmental monitoring and transmission of various site construction inspections and construction data using IT equipment. In particular, it is difficult to perform long-distance communication to the upper floors of high-rise buildings covered with construction materials such as concrete and steel bones, which shield radio waves.
The waveguide antenna-based communication system was developed as the following communication system in the initial construction site: in addition to the actual installation of the facility, various environmental sensors are used to monitor the environment of the construction site during the temporary installation and to transmit information to a monitoring center or the like. Therefore, there is a demand for a system that can be manufactured at low cost and that can be installed and installed easily. In addition, it is necessary to provide a robust device which is not prone to cause a malfunction or communication accident when temporarily installed in a construction site.
In addition, it is necessary to be able to be simply installed to other building materials in a construction site and to be easily detached from the other building materials if the construction is completed. Moreover, it is important that no damage is caused when the building material is installed and removed.
In addition, as a temporary installation material, a device that is stored in advance in a warehouse or the like and can be repeatedly brought to a construction site for use is necessary. That is, not only the mounting and dismounting are simple, but also the handling itself must be easy. Furthermore, the problem is that the device must be reused repeatedly without performance degradation.
The waveguide antenna-based communication system is preferably installed in an antenna path penetrating through a vertical system such as a stairwell or elevator shaft at a construction site. However, each layer of the building is made of a wall material, a floor material, or a floor material made of a reinforced concrete or a reinforced concrete steel, which is a composite structure of an iron plate and concrete. Therefore, even in a stairwell or the like through which radio waves easily pass, when concrete or the like has a complicated shape, there is a problem that radio waves are shielded and cannot be easily passed through an antenna path of a vertical system. In addition, in the case of an elevator hoistway, when the elevator is temporarily installed, there is a problem in that radio waves are shielded and radio communication is not stable when the elevator is temporarily installed.
In addition, in a construction site, the degree of completion of an antenna path itself generally changes with progress of construction, such as a stairway or an elevator hall, and there is a problem that the antenna path must be changed every time. In addition, there is a problem that each layer region to which electric waves should be transmitted sometimes changes with progress of construction, and each time the change of each layer region to which electric waves should be transmitted must be flexibly handled.
On the other hand, the leaky coaxial system using the LCX (leaky coaxial cable) is not a communication system in which functions of both a cable transmission path and an antenna are combined in a main installation construction, as in the present communication system, but the purpose of use is different from that of the present device, and therefore the above-described problem cannot be solved.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a waveguide antenna-based communication system which can reliably transmit information such as a monitoring result of a construction site, a site construction inspection, construction data, etc. to a monitoring center, etc. using construction materials which can be supplied at the construction site, and which can be freely attached and detached, and which can be repeatedly used by lease, and which is therefore suitable for temporary installation equipment.
Another object of the present invention is to solve the above-described problems and to provide a simple waveguide antenna-based communication system that forms a wireless communication network for reliably transmitting information such as a monitoring result of a construction site, a site construction inspection, construction data, etc. to a monitoring center, etc. through a waveguide antenna, and that flexibly responds to the progress of construction.
In order to achieve the above object, the present invention provides a communication system based on a waveguide antenna, comprising a radio wave leakage part for transmitting radio waves inside and allowing the radio waves to leak, a radio wave non-leakage part for connecting the radio wave leakage part to an input connector in a length-adjustable manner via a single pipe, and preventing the radio waves from leaking, the input connector being connected to a radio access point, and performing radio communication between a radio machine and a radio terminal machine via the radio waves leaking from the radio access point, the clamp being fixed to the vicinity of an end of the single pipe by sandwiching the single pipe, the clamp having a connection bolt hole into which a connection bolt is inserted, the connection part having a first end and a second end, the first end being fixed to the clamp, the first end having a joint, the joint being joined to a tip portion of the single pipe and covering the tip portion, the joint having a connection bolt hole, the connection clamp being inserted into the connection bolt hole, the clamp being fixed to the connection hole being inserted into the joint, the connection part being fixed to the connection hole being provided to the flange, the connection part being fixed to the connection part by one of the two end portions, the connection part being fixed to the flange being connected to the flange, the two slots are provided at angles having mutually opposite directions with respect to a main axis of the radio wave leakage portion.
According to the above configuration, the waveguide antenna-based communication system of the present invention is constituted by the radio wave leakage portion and the radio wave non-leakage portion. The radio wave non-leakage portion can be made to have a free length by using a single pipe line which is commonly used for a scaffold or the like in a construction site. In addition, the connection portion can be simply manufactured using a flange joint that is generally used for connection of pipes. Therefore, the waveguide antenna can be manufactured using a material which is easy to supply in a construction site without using a special material. The radio wave non-leaking portion, the radio wave leaking portion, and the connecting portion are joined by bolts or the like. Thus, the installation and the removal can be performed in the construction site simply. Furthermore, once-fabricated waveguide antennas can be easily reused in other construction sites after disassembly because they do not have particularly complex details. In addition, a plurality of sets may be prepared and stored in advance, and reused by lease as needed.
In the waveguide antenna-based communication system according to the present invention, the input connectors at both ends of the waveguide antenna are connected to a wireless access point, and a wireless LAN transmitted from a wireless device is transmitted to the waveguide antenna via the access point. The radio communication between the radio device and the radio terminal device in the vicinity of the radio leakage section is performed by the radio wave leaked from the radio leakage section among the transmitted radio waves. That is, in the case of a high-rise building, radio waves emitted from a radio device can be reliably transmitted as a waveguide to each floor in a vertical system, and information can be transmitted to the radio terminal devices of each floor via the radio access points provided in each floor.
Further, the waveguide antenna-based communication system of the present invention preferably includes a connection portion that connects the radio wave leakage portion and the radio wave non-leakage portion. Thus, the waveguide antenna-based communication system of the present invention is constituted by the radio wave leakage section, the radio wave non-leakage section, and the connection section.
In the waveguide antenna-based communication system, it is preferable that the radio wave leakage portion is provided with a groove for allowing radio waves to leak, and the radio wave non-leakage portion is attached with a flange joint as a connection fitting to a single pipe line used in a construction site. Thus, the waveguide antenna of the present invention can be manufactured using a material that is easy to supply in a construction site without using a special material. In addition, by connecting the components to each other by bolting, the components can be easily attached and detached on the site. The connection metal member is not limited to the flange joint, and may be another connection metal member.
Further, in the waveguide antenna-based communication system, it is preferable that the radio wave leakage portion and the radio wave non-leakage portion are alternately arranged to form one unit, and a plurality of units are connected to form a waveguide antenna having an arbitrary length. Thus, the length of the waveguide antenna can be freely adjusted without meaningless leakage of radio waves from the waveguide antenna, and radio waves can be reliably transmitted inside the waveguide.
In the waveguide antenna-based communication system, it is preferable that the flange joint of the connection portion is provided with a ring for adjusting the size having different plate thicknesses, and the length adjustment is easily performed by using either ring. This makes it possible to adjust the length in the construction site and to transmit radio waves to any position of each layer.
Further, in the waveguide antenna-based communication system, it is preferable that a corrugated portion or a curved tube which is freely corresponding to a curved line or a broken line is attached to the connection portion. This can absorb construction errors in a construction site and transmit radio waves to an arbitrary position. Further, in the case where the antenna path is curved or bent, the waveguide antenna can be made to follow them.
In the waveguide antenna-based communication system, the radio wave leakage portion is preferably made of aluminum, stainless steel, or copper, and the radio wave non-leakage portion is preferably galvanized. Thus, the surface of the waveguide antenna such as the radio wave leaking portion and the radio wave non-leaking portion is smoother, and the transmission can be efficiently performed inside the waveguide antenna.
In the waveguide antenna-based communication system, it is preferable that the antenna path extending in the longitudinal direction is provided as a temporary installation in a multi-story building, the radio wave is leaked by at least one radio wave leakage portion in a layer transmitting the radio wave, and a radio wave non-leakage portion having no slot is used in a layer not transmitting the radio wave. This makes it possible to transmit radio waves intensively only in the layer transmitting radio waves, thereby improving the efficiency of radio communication.
Further, in the waveguide antenna-based communication system, it is preferable that the leaked radio wave is transmitted to a radio access point provided in each layer, and the radio wave is transmitted from the radio access point to each radio terminal through a wireless mesh network provided in each layer. Thus, by forming a wireless mesh network of a communication system using a waveguide antenna, radio waves can be reliably transmitted from a lower floor to an upper floor or up to the end of each floor in a high-rise building or the like. In the past, a wireless mesh network in a high-rise building was constructed in each floor including upper and lower floors, but the wireless mesh network was not suitable for communication of a longitudinal system of the high-rise building due to the presence of a shade. However, this problem can be solved by using waveguides for communication in the longitudinal system. Further, although the same effect can be obtained by using LCX for a longitudinal system, the robustness of the system is required in the construction site, and therefore the present waveguide antenna is advantageous in comparison with LCX in which there is a risk of disconnection.
Furthermore, the waveguide antenna based communication system is preferably such that the radio wave non-leaking part is fixed to a temporary setting material in the antenna path or to an iron part of the deck plate by a clamping tool. Thus, the radio wave non-leakage portion of the waveguide antenna can be effectively utilized, and the waveguide antenna can be easily fixed to a temporary installation material, a deck plate, or the like.
Further, the waveguide antenna-based communication system preferably includes an input connector at an end portion, and the wireless access point connected to the wireless LAN is connected to the input connector via a coaxial cable to transmit radio waves. Accordingly, a coaxial cable or the like having good follow-up performance with respect to a curve can be used for connection with the input connector at the end portion. The connection between the wireless access point and the input connector is not limited to coaxial cable, and may be other connection means.
Further, in the waveguide antenna-based communication system, it is preferable that at least one radio wave leakage portion is disposed in an antenna path extending in a planar direction from the wireless access point, and radio waves are transmitted in the planar direction. Thus, by effectively utilizing the present invention together with the waveguide, it is possible to construct a wireless mesh network for transmitting a wireless LAN to each wireless terminal in a high-rise building.
In the waveguide antenna-based communication system, it is preferable that a waveguide antenna composed of a plurality of systems is disposed in each antenna path in the longitudinal direction or the planar direction, and each waveguide antenna is a communication system for transmitting information to each wireless terminal in a high-rise building. As a result, for example, the communication system using the waveguide antenna can transmit the monitoring result of the construction site through the first waveguide antenna, and transmit information such as the site construction inspection and the construction data separately through the second or third waveguide antenna, and the interference of the radio wave can be avoided.
Furthermore, the waveguide antenna-based communication system preferably has a dedicated wireless access point for each waveguide antenna. In this way, the first wireless access point can be used to transmit the monitoring result of the construction site, and the second or third wireless access point can be used to separately transmit information such as site construction inspection and construction data, so that interference of radio waves and the like can be avoided.
Furthermore, the waveguide antenna-based communication system preferably has each waveguide antenna connected to a dedicated environmental sensor provided in the multi-story building, and transmits the acquired environmental data to the data center. This makes it possible to make the waveguide antenna for data communication different for each environmental sensor, and to avoid interference of electric waves and the like.
Another object of the present invention is to solve the above-described problems and to provide a simple waveguide antenna-based communication system that forms a wireless communication network by which monitoring information and the like of a construction site are reliably transmitted to a monitoring center and the like by a waveguide antenna, and that flexibly accommodates progress of construction.
As described above, according to the waveguide antenna-based communication system of the present invention, a waveguide antenna-based communication system can be provided, which is: the present invention relates to a method for manufacturing a building material capable of being supplied at a construction site, and more particularly, to a method for manufacturing a building material capable of being used for temporarily setting up a building material, and capable of being used for manufacturing a building material capable of being used for temporarily setting up the building material.
Furthermore, according to the waveguide antenna-based communication system of the present invention, a simple waveguide antenna-based communication system can be provided, which is based on: a wireless communication network is formed which uses a waveguide antenna to reliably transmit information such as a monitoring result of a construction site, site construction inspection, construction data, etc. to a monitoring center, etc., and flexibly cope with the progress of construction.
Drawings
Fig. 1 is a side view showing a schematic component structure of one embodiment of a waveguide antenna according to the present invention.
Fig. 2 is a perspective view and a side view showing the shape and structure of a radio wave leakage portion of a waveguide antenna.
Fig. 3 is a perspective view and a cross-sectional view showing the shape and structure of a radio wave non-leakage portion of a waveguide antenna.
Fig. 4 is a perspective view, a sectional view, and a side view showing the shape and structure of a connection portion of a waveguide antenna.
Fig. 5 is a perspective view showing the shape and structure of an input connector of a waveguide antenna.
Fig. 6 is an explanatory view showing an embodiment of a wireless communication system of a waveguide provided in an antenna path.
Fig. 7 is an explanatory diagram showing the evaluation results in 2 floors of a high-rise building in which no waveguide antenna is provided.
Fig. 8 is an explanatory diagram showing the evaluation results in 9 floors of a high-rise building in which no waveguide antenna is provided.
Fig. 9 is an explanatory diagram showing evaluation results in 2 floors of a high-rise building provided with a waveguide antenna.
Fig. 10 is an explanatory diagram showing evaluation results in 9 floors of a high-rise building provided with a waveguide antenna.
Detailed Description
(Structure of waveguide antenna)
The waveguide antenna 1 of the present invention will be described in detail with reference to the drawings. Fig. 1 is a component configuration diagram schematically showing the configuration of one embodiment of a waveguide antenna 1 according to the present invention. In fig. 1 (a), a radio wave leakage section 2 for leaking radio waves and connection sections 4 provided at both ends of the radio wave leakage section 2 are shown as component structures of the waveguide antenna 1. The radio wave leakage unit 2 is provided with a slot 7. Fig. 1 (b) shows a basic unit of the waveguide antenna 1, and the radio wave non-leakage section 3 is connected to the component structure of fig. 1 (a), and the input connector 6 is further connected to the end of the waveguide antenna 1. Fig. 1 (c) shows a component structure of the waveguide antenna 1 including three radio wave leakage sections 2.
Thus, the waveguide antenna 1 of the present invention is constituted by the radio wave leakage section 2, the connection section 4, and the radio wave non-leakage section 3 as the basic units. By repeatedly connecting the basic units, a predetermined length can be obtained. The waveguide antenna 1 can be used as a wireless communication system at a construction site by being installed in an antenna path extending along a longitudinal system at the construction site. Here, the term "antenna path extending along the longitudinal system in the construction site" refers to an antenna path capable of leaking radio waves from the radio wave leakage unit 2 in each predetermined floor without impeding the waveguide antenna 1 to extend along the longitudinal system in the construction site such as a high-rise building, such as a stairwell or an elevator shaft. Here, since the radio wave is transmitted inside the waveguide antenna 1, not inside the antenna path, it is different from the case where a steel column, a mast of a crane, or a metal pipe is used as a hollow waveguide as in patent document 1.
(structural component of waveguide antenna)
Fig. 2 to 6 show the shape and function of each structural member of the waveguide antenna 1. Fig. 2 (a) is a perspective view of the radio wave leakage unit 2, and fig. 2 (b) is a side view of the radio wave leakage unit 2. Fig. 3 is a perspective view and a cross-sectional view showing the shape and structure of the radio wave non-leaking portion 3. Fig. 4 (a) and 4 (b) are a perspective view and a cross-sectional view showing the shape and structure of the connecting portion 4. Fig. 4 (c) shows a corrugated portion 14 for the connection portion 4 so as to correspond to the curved surface. Fig. 5 is a perspective view showing the shape and structure of the input connector 6.
As shown in fig. 2 (a) and 2 (b), slots 7 are provided at two positions in a part of the radio wave leakage section 2. The slots 7 are provided at angles opposite to each other with respect to the main axis so that the radio wave transmitted inside the radio wave leakage section 2 is easily leaked.
Fig. 3 shows the radio wave non-leaking portion 3, and a jig 5a for connecting one end of the radio wave non-leaking portion 3 to the connection portion 4, and a jig 5b for connecting the other end of the radio wave non-leaking portion 3 to the input connector 6. As shown in fig. 3 (b), the jigs 5a and 5b are provided with jig fixing bolt holes 23. The jig itself is fixed to the radio wave non-leakage section 3 by a jig fixing bolt 22. Further, the jigs 5a and 5b are provided with connecting bolt holes 25, and the radio wave non-leakage section 3, the connecting section 4, and the input connector 6 are connected to each other by the connecting bolts 24.
The radio wave non-leakage portion 3 can be used directly in a single pipe 9 which is commonly used for temporary installation in a construction site. The jigs 5a and 5b may be used as they are for jigs 5a and 5b that are commonly used for temporary installation and the like in a construction site. Therefore, the waveguide antenna 1 can be manufactured by building materials used daily for a construction site. In addition, the remaining single-pipe conduit 9 and clamps 5a, 5b can be returned to the construction site for use.
Fig. 4 shows the connection portion 4. Fig. 4 (a) is a perspective view of the connection portion 4, and fig. 4 (b) is a cross-sectional view of the connection portion 4. In the connection portion 4, since one end is connected to the radio wave leakage portion 2 and the other end is connected to the jigs 5a and 5b of the radio wave non-leakage portion 3, flange joints 8a and 8b are provided at both end portions, and a connection bolt hole 25 is provided in a connection direction of the flange joints 8a and 8b, and the connection member is connected to each other by the connection bolt 24. As shown in fig. 4 (b), the flange joints 8a and 8b of the connecting portion 4 can be adjusted in length by preparing the size adjustment rings 10 having different plate thicknesses and using any of them.
As shown in fig. 4 (c), the connecting portion 4 may be provided with a corrugated portion 14 corresponding to a curved change. The bellows 14 is a flexible hose or the like which can be freely curved or folded. The corrugated portion 14 is sealed so that the radio wave flowing through the connection portion 4 does not leak. By effectively utilizing the corrugated portion 14, even if the linearity of the antenna path is changed, it is possible to sufficiently cope with the change.
Fig. 5 shows the shape and structure of the input connector 6 of the waveguide antenna 1. A connector portion 18 is provided at the front end of the input connector 6 and is connected to the wireless access point 16 via a coaxial cable 17. Further, the radio wave leakage preventing device has a connecting bolt hole 25 connected to the jigs 5a and 5b of the radio wave leakage preventing portion 3 by a connecting bolt 24.
(communication System Using waveguide)
Fig. 6 shows an embodiment of a wireless communication system of the waveguide 1 provided in an antenna path. In the case where the waveguide antenna 1 is used in a wireless communication system in the vertical direction of a high-rise building, it is referred to as a waveguide 1 in this specification. In fig. 6, monitoring of the wireless mesh network 36 based on the B layer 27, the environmental sensor 30, and the like in the continuous a layer 26, B layer 27, C layer 28 of the high-rise building is performed, and the result of the monitoring is transmitted to a monitoring center or the like.
A wireless access point 16 connected to a wireless LAN is provided at the end of the waveguide 1, and the waveguide 1 is connected to the wireless access point 16 via a coaxial cable 17. Alternatively, the waveguide 1 may be directly connected to the wireless access point 16. In the B layer 27, the electric wave leaked from the waveguide 1 is transmitted to the wireless access point 16 of the B layer 27, and is transmitted to the wireless mesh network 36 of the wireless terminal 35 of the B layer 27.
On the other hand, in the B layer 27, the environment sensor 30 composed of the environment sensor main body 31, and, for example, the temperature sensor box 32, the combustible gas sensor box 33, the virus detection box 34, and the like, performs wireless communication with the waveguide 1. An environmental measuring device such as a temperature sensor box 32 monitors the working environment of the construction site, and transmits the result of the monitoring to a monitoring center or the like. Further, the construction condition and the like can be grasped by the monitoring camera 29 and the like provided at the construction site. Further, the waveguide 1 can be used for wireless communication with a monitoring center or the like for site operation inspection and operation data.
(evaluation results based on waveguide)
Fig. 7 shows the evaluation results of radio wave measurement in the 2 floors of the high-rise building where the waveguide 1 is not provided. Fig. 8 shows the evaluation results of radio wave measurement in 9 floors of a high-rise building in which the waveguide 1 is not installed. Fig. 9 shows the evaluation results of radio wave measurement in 2 floors of a high-rise building provided with the waveguide 1. Fig. 10 shows the evaluation results of radio wave measurement in 9 floors of a high-rise building provided with the waveguide 1. The evaluation was performed on 2 floors and 9 floors of a 9-story high-rise building. Fig. 7 and 8 show a case where the waveguide 1 is not provided in the antenna path such as an elevator hoistway or a stairwell, and fig. 9 and 10 show evaluation results in six levels (30 dB or more, 25 to 29dB, 20 to 24dB, 15 to 19dB, 10 to 14dB, 9dB or less) by measuring the received power level in the corridor or the intensity of the electric wave in RSSI (dB) depending on whether or not the waveguide 1 is provided in the antenna path such as an elevator hoistway or a stairwell.
In the measurement of 2 layers having a high reception level, the waveguide 1 is not provided in fig. 7, but is 20 to 24dB at the maximum in the corridor around the stairwell, but 10 to 14dB in the room enclosed by the wall. On the other hand, in the case of the waveguide 1 provided in fig. 9, the effect of the waveguide 1 is considered to be exhibited even in the room enclosed by the wall, while the corridor around the stairwell is at most 30dB or more.
In the 9 layers having a low reception level, in the case where the waveguide 1 is not provided in fig. 8, the reception power level is almost 9dB or less. On the other hand, in the case of the waveguide 1 of fig. 10, it is understood that the maximum 30dB or more is provided in the corridor around the stairwell, and the reception power level equivalent to 2 layers is maintained.
According to the evaluation results of the radio wave measurement of these high-rise buildings, in the case of using the waveguide 1, since the drop in the reception power level in the high-rise floor was hardly found, it was confirmed that the waveguide 1 had stable characteristics in the height direction.
The configuration, shape, size, and arrangement relation of the waveguide antenna 1 or the waveguide 1 described in the above embodiments are only schematically shown to the extent that the present invention can be understood and implemented. Therefore, the present invention is not limited to the embodiments described above, and can be modified into various forms without departing from the scope of the technical idea shown in the claims.
Description of the reference numerals
A 1 waveguide antenna or waveguide, a 2 wave leakage portion, a 3 wave non-leakage portion, a 4 connection portion, 5a, 5B clamps, a 6 input connector, a 7 slot, 8a, 8B flange joint, a 9 single tube pipe, a 10 size adjustment ring, a 14 wave portion, a 16 wireless access point, a 17 coaxial cable, a 18 connector portion, a 22 clamp fixing bolt, a 23 clamp fixing bolt hole, a 24 connecting bolt, a 25 connecting bolt hole, a 26A layer, a 27B layer, a 28C layer, a 29 monitoring camera, a 30 environmental sensor, a 31 environmental sensor body, a 32 temperature sensor box, a 33 combustible gas sensor box, a 34 virus detection box, a 35 wireless terminal, a 36 wireless mesh network.
Claims (12)
1. A waveguide antenna-based communication system is characterized by comprising a radio wave leakage section, a radio wave non-leakage section, a clamp, and a connection section,
the radio wave leakage part transmits radio waves inside and leaks the radio waves,
the radio wave non-leakage part is connected with the input connector in a length-adjustable way through a single pipe pipeline, and prevents the radio wave from leakage,
the input connector is connected to a wireless access point, and performs wireless communication between a wireless device and a wireless terminal device by the leaked radio wave among the radio waves transmitted from the wireless access point,
the clamp is secured to the single tube conduit near the end thereof by clamping the single tube conduit,
the clamp has a connecting bolt hole into which a connecting bolt is inserted,
the connection having a first end secured to the clamp and a second end, the first end having a fitting that engages and covers around the tip portion of the single tube conduit,
the joint has a connecting bolt hole into which a connecting bolt is inserted, the connecting portion is fixed to the jig by a connecting bolt inserted into the connecting bolt hole of the joint and the jig,
the second end is fixed on the electric wave leakage part, the second end is provided with a flange joint, the flange joint is fixed on the electric wave leakage part,
the connecting part is provided with any one of a corrugated part and a bending tube which can be freely corresponding to any one of a curve and a broken line,
the radio wave leakage portion is provided with two slots which are provided at angles having mutually opposite directions with respect to a main axis of the radio wave leakage portion.
2. The waveguide antenna-based communication system according to claim 1, wherein the radio wave leaking portion and the radio wave non-leaking portion are alternately arranged to form one unit, and a waveguide antenna of an arbitrary length is formed by connecting a plurality of units.
3. The waveguide antenna-based communication system according to claim 1 or 2, wherein in the flange joint of the connection portion, length adjustment is performed by preparing a ring for size adjustment having different plate thicknesses and using any one of them.
4. The waveguide antenna-based communication system according to claim 1 or 2, wherein the radio wave leakage portion is made of aluminum, stainless steel, or copper, and the radio wave non-leakage portion is galvanized.
5. The waveguide antenna-based communication system according to claim 1 or 2, wherein the radio wave leakage portion is provided as an antenna path extending in a longitudinal system as a temporary arrangement in a multi-story building, the radio wave is leaked by at least one of the radio wave leakage portions in a layer transmitting the radio wave, and the radio wave non-leakage portion having no slot hole is used in a layer not transmitting the radio wave.
6. The waveguide antenna-based communication system according to claim 1, wherein the leaked radio waves are transmitted to the wireless access points provided in the respective layers, and the radio waves are transmitted from the wireless access points to the respective wireless terminals through wireless mesh networks provided in the respective layers.
7. The waveguide antenna based communication system of claim 1, wherein the radio wave non-leaky section is secured to a temporary setting funding within the antenna path or to an iron section of the deck plate by clamping means.
8. A waveguide antenna based communication system according to claim 1 or 2, comprising an input connector at an end portion, wherein a wireless access point connected to a wireless LAN and the input connector are connected by a coaxial cable to transmit electric waves.
9. The waveguide antenna-based communication system according to claim 1 or 2, wherein at least one of the radio wave leakage sections is disposed in an antenna path extending in a planar direction from a wireless access point, and the radio wave is transmitted in the planar direction.
10. The waveguide antenna-based communication system according to claim 1 or 2, wherein the waveguide antennas each configured by a plurality of systems are disposed in each antenna path in a longitudinal direction or a planar direction, and each waveguide antenna is a communication system for transmitting respective information to each wireless terminal in a high-rise building.
11. A waveguide antenna based communication system according to claim 1 or 2, wherein each waveguide antenna has a dedicated wireless access point.
12. A waveguide antenna based communication system according to claim 1 or 2, wherein each waveguide antenna is connected to a dedicated environmental sensor provided in the multi-story building, respectively, for transmitting the acquired environmental data to a data center.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019130807A JP7252849B2 (en) | 2019-07-16 | 2019-07-16 | Communication system with waveguide antenna |
| JP2019-130807 | 2019-07-16 | ||
| PCT/JP2020/027310 WO2021010384A1 (en) | 2019-07-16 | 2020-07-14 | Communication system configured using waveguide antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113940009A CN113940009A (en) | 2022-01-14 |
| CN113940009B true CN113940009B (en) | 2023-04-25 |
Family
ID=74210806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080043248.XA Active CN113940009B (en) | 2019-07-16 | 2020-07-14 | Communication system based on waveguide antenna |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7252849B2 (en) |
| CN (1) | CN113940009B (en) |
| WO (1) | WO2021010384A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115577736B (en) * | 2022-09-16 | 2023-04-25 | 北京燃气平谷有限公司 | Gas leakage assessment system and leakage assessment method |
| CN116660826B (en) * | 2023-05-17 | 2023-12-19 | 中天射频电缆有限公司 | Leakage device, positioning method and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5496003A (en) * | 1991-04-24 | 1996-03-05 | Societe Nationale Des Chemins De Fer Francais | System for transmission of information between the ground and moving objects, in particular in ground-train communications |
| CN101496225A (en) * | 2005-09-19 | 2009-07-29 | 查尔斯·D·贝克尔 | Waveguide-based wireless distribution system and method of operation |
| JP2010159564A (en) * | 2009-01-07 | 2010-07-22 | Taisei Corp | Radio communication system |
| CN105119033A (en) * | 2015-09-10 | 2015-12-02 | 四川九洲电器集团有限责任公司 | Flexible waveguide and signal transmission system |
| CN107925145A (en) * | 2015-08-26 | 2018-04-17 | 索尼半导体解决方案公司 | Electrical connector and communicator |
-
2019
- 2019-07-16 JP JP2019130807A patent/JP7252849B2/en active Active
-
2020
- 2020-07-14 WO PCT/JP2020/027310 patent/WO2021010384A1/en active Application Filing
- 2020-07-14 CN CN202080043248.XA patent/CN113940009B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5496003A (en) * | 1991-04-24 | 1996-03-05 | Societe Nationale Des Chemins De Fer Francais | System for transmission of information between the ground and moving objects, in particular in ground-train communications |
| CN101496225A (en) * | 2005-09-19 | 2009-07-29 | 查尔斯·D·贝克尔 | Waveguide-based wireless distribution system and method of operation |
| JP2010159564A (en) * | 2009-01-07 | 2010-07-22 | Taisei Corp | Radio communication system |
| CN107925145A (en) * | 2015-08-26 | 2018-04-17 | 索尼半导体解决方案公司 | Electrical connector and communicator |
| CN105119033A (en) * | 2015-09-10 | 2015-12-02 | 四川九洲电器集团有限责任公司 | Flexible waveguide and signal transmission system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021010384A1 (en) | 2021-01-21 |
| JP2021016114A (en) | 2021-02-12 |
| JP7252849B2 (en) | 2023-04-05 |
| CN113940009A (en) | 2022-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113940009B (en) | Communication system based on waveguide antenna | |
| US11811126B2 (en) | Antenna apparatus and radio base station | |
| CN109474935B (en) | Tunnel microwave communication transmission system and method | |
| KR101642389B1 (en) | Line protection tube by the manipulation of multi-layered pipes | |
| WO2017196097A1 (en) | Antenna alignment guide device | |
| JP5280869B2 (en) | Wireless communication system | |
| JP3999047B2 (en) | Wireless communication manhole cover, wireless communication data collection device, and data collection system | |
| CA2367335C (en) | Method and device at a transmitter and receiver unit in a mobile telephone system | |
| CN104064998B (en) | A kind of radial leak cable-laying gear and method with protector | |
| JP2021016114A5 (en) | ||
| CN110460979B (en) | Wireless communication system and method for stacker-reclaimer | |
| JP2752162B2 (en) | Fire communication circuit | |
| JP3813082B2 (en) | Radio wave supply system using leaky cables laid vertically | |
| CN210720231U (en) | Humidity detection system based on passive sensor | |
| JP2022098549A (en) | Wireless communication system | |
| CN111132180A (en) | Communication system for construction in long and large tunnel and construction method thereof | |
| RU123497U1 (en) | MAST SUPPORT OF DUAL PURPOSE | |
| JP2012117843A (en) | Wireless device and wireless system | |
| CN203967635U (en) | A kind of radial leak cable-laying gear with protector | |
| JP2007280843A (en) | Composite leakage coaxial cable and method of installing same | |
| CN209949118U (en) | Wireless communication system of stacker-reclaimer | |
| CN211089984U (en) | Communication system for long and large tunnel construction | |
| CN111836120A (en) | Communication base station | |
| JP2000049518A (en) | Method and device for installing phs base station antenna on radio wave reflective wall | |
| CN210597618U (en) | Movable integral type earthquake monitoring station assembling structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |