CN113940009A - Communication system based on waveguide tube antenna - Google Patents
Communication system based on waveguide tube antenna Download PDFInfo
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- CN113940009A CN113940009A CN202080043248.XA CN202080043248A CN113940009A CN 113940009 A CN113940009 A CN 113940009A CN 202080043248 A CN202080043248 A CN 202080043248A CN 113940009 A CN113940009 A CN 113940009A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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- 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
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- 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
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- 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
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
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- Near-Field Transmission Systems (AREA)
- Waveguide Aerials (AREA)
- Waveguides (AREA)
Abstract
The invention provides a communication system based on a waveguide antenna, which can reliably transmit monitoring information of a construction site to a monitoring center and the like through a simple structure, can be freely installed and detached, and can be repeatedly used. A communication system using a waveguide antenna is composed of a radio wave leakage part (2) and a single pipe part (3), wherein the radio wave leakage part (2) transmits radio waves inside and leaks the radio waves from a part of a side wall, the single pipe part (3) connects the radio wave leakage part (2) and an input connector (6) through a single pipe in a way that the length can be freely adjusted, and the radio waves are not leaked, the input connector (6) is connected with a wireless access point, and the wireless communication between the wireless device and a wireless terminal is carried out through the leaked radio waves in the radio waves transmitted from the wireless access point.
Description
Technical Field
The invention relates to a communication system based on a waveguide antenna, in particular to a communication system based on the following waveguide antennas: a waveguide antenna having a radio wave leakage part for leaking a radio wave is used, and the waveguide antenna is effectively used as a waveguide for wireless communication of a vertical system at the time of temporary installation in a construction site of a high-rise building or the like, and a wireless communication network is formed by a planar wireless mesh network at each floor of the high-rise building.
Background
In recent construction sites of buildings, civil engineering structures, and the like, it is desired to perform thorough disaster prevention at each construction site and prevention of accidents of field workers by performing environment monitoring of the construction site using various environment sensors. Further, IT is desired to realize high quality control in field construction by performing various field construction 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, measurement of oxygen concentration, carbon dioxide concentration, carbon monoxide concentration, generation of toxic gas, generation of combustible gas, and the like. It is preferable that the measurement results of these environmental monitoring are collected at the construction site and transmitted as communication data to a monitoring center or the like installed in the construction site or at a remote location via a wireless LAN or the like. The communication system for environment monitoring and the measurement results thereof can prevent the occurrence of fire in a construction site, poisoning by toxic gases of site workers, explosion by flammable gases, and infection by viruses.
In addition, the communication system based on the environmental monitoring and the measurement results thereof predicts, for example, rainstorm, sunshine, snow, strong wind, storm, etc. in advance based on the measurement of weather data at the construction site, and can take in advance health measures of site workers such as sunstroke, measures against damage or destruction of building materials due to strong wind, measures against damage of building materials due to sudden rainstorm during construction, etc.
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 a radio wave signal to a terminal device or the like through a transmission cable using radio communication, and is a system in which a slit is provided in a leaky coaxial cable and an electromagnetic wave leaking from the slit is used as an antenna.
Patent document 1 discloses a wireless communication system that can be easily installed and removed and that can be suitably used as a temporary communication system for a high-rise building in construction. Here, it is described that a hollow waveguide capable of extending in the vertical direction according to the progress of construction is provided in a high-rise building, an antenna of a base station is disposed in the hollow waveguide, openings are formed in the hollow waveguide in each floor of the high-rise building, and cylindrical radiation guides protruding from the circumferential edges of the openings toward the indoor side are provided.
Documents of the prior art
Patent document 1: japanese laid-open patent publication No. 2010-159564
Patent document 2: japanese patent laid-open publication No. 2008-28549
Patent document 3: japanese patent laid-open publication No. 2016-
Conventionally, in a construction site, information transmission to a place where a telephone line (3G, 4G, 5G) does not reach has not been possible with respect to acquired environmental monitoring, various site construction inspections using IT equipment, and transmission of construction data. In particular, it is difficult to perform communication to an upper layer of a high-rise building covered with a construction material such as concrete or steel ribs that shields radio waves, and long-distance communication in a tunnel or the like.
The waveguide antenna-based communication system is developed into the following communication system in a construction field: in the construction of equipment installed in the main, various environmental sensors are used to monitor the environment of a construction site during temporary installation and to transmit information to a monitoring center or the like. Therefore, there is a demand for a system that is inexpensive to manufacture and simple to install and construct. In addition, it is necessary to be a robust device which is not liable to cause a trouble or communication accident at the time of temporary setting at a construction site,
in addition, it is necessary to be easily attachable to and detachable from other construction materials in a construction site if construction is completed. In addition, it is important that the building material is not damaged when being installed or disassembled relative to the building material.
In addition, as temporary installation materials, it is necessary to store them in a warehouse or the like in advance and repeatedly bring them to a construction site for use. That is, not only the mounting and dismounting are simple, but also the transportation itself must be easy. Further, there is a problem that the device must be repeatedly reused without deterioration in performance.
The waveguide antenna-based communication system is preferably installed in an antenna passage penetrating a vertical system, such as a staircase or an elevator shaft in a construction site. However, each floor of the building is made of a wall material or a floor material made of reinforced concrete or steel reinforced concrete, or a floor material made of a deck plate which is a composite structure of an iron plate and concrete. Therefore, even in a staircase 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 an antenna path through which radio waves easily pass through the vertical system. Further, in the case of an elevator shaft, when temporarily setting an elevator at the time of temporary setting, there is a problem that radio waves are shielded and wireless communication at the time of temporary setting is unstable.
In addition, in a construction site, generally, the degree of completion of an antenna path itself such as a staircase or an elevator hall changes with the progress of construction work, and there is a problem that it is necessary to cope with the change of the antenna path every time. Further, as construction progresses, there is a problem that each floor area to which radio waves should be transmitted changes, and it is necessary to flexibly cope with each change of each floor area to which the radio waves should be transmitted.
On the other hand, the leaky coaxial system using the LCX (leaky coaxial cable) is not a communication system in which both functions of a cable transmission path and an antenna are combined in a main installation work, unlike the present communication system, and the purpose of use is different from that of the present apparatus, and therefore the above-described problem cannot be solved.
Disclosure of Invention
An object of the present invention is to solve the above problems and to provide a communication system using a waveguide antenna, which is suitable for temporarily installing equipment by reliably transmitting information such as monitoring results, site construction inspection, and construction data of a construction site to a monitoring center or the like using construction materials that can be supplied at the construction site, can be freely attached and detached, and can be repeatedly used by renting.
Another object of the present invention is to solve the above problems and to provide a simple waveguide antenna-based communication system that forms a wireless communication network for reliably transmitting information such as monitoring results, site construction inspections, and construction data of a construction site to a monitoring center or the like via a waveguide antenna, and flexibly copes with the progress of construction.
In order to achieve the above object, the present invention provides a communication system using a waveguide antenna, comprising a radio wave leakage unit for transmitting radio waves inside and leaking the radio waves, and a single pipe unit for connecting the radio wave leakage unit and an input connector so as to be adjustable in length through a single pipe and preventing the leakage of the radio waves, wherein the input connector is connected to a radio access point, and radio communication between the radio device and the radio terminal device is performed by the leaked radio waves among the radio waves transmitted from the radio access point.
According to the above configuration, the communication system using the waveguide antenna according to the present invention includes the radio wave leakage unit and the single tube unit. The single-pipe section can be made to a free length using a single-pipe commonly used for scaffolding or the like in construction sites. Further, the connection portion can be easily manufactured using a flange joint generally used for connection of pipes. Therefore, the waveguide antenna can be manufactured by using a material which is easily supplied in a construction site without using a special material. Further, the single tube portion, the radio wave leakage portion, and the connection portion are joined by bolts or the like. Therefore, it is possible to easily perform installation and removal in a construction site. In addition, since the once-fabricated waveguide antenna has no particularly complicated details, it can be easily reused in other construction sites after being disassembled. Further, a plurality of sets may be prepared and stored in advance, and may be repeatedly used by lease as necessary.
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 the wireless access point, and the wireless LAN transmitted from the wireless device is transmitted to the waveguide antenna via the access point. Radio communication between the radio device and the radio terminal around the radio wave leakage part is performed by the radio wave leaked from the radio wave leakage part among the transmitted radio waves. That is, in the case of a high-rise building, radio waves emitted from a radio machine can be reliably transmitted to each floor as a waveguide by a vertical system using a waveguide antenna, and can be transmitted to a radio terminal of each floor via a radio access point provided in each floor.
In addition, the communication system using the waveguide antenna according to the present invention preferably includes a connection unit that connects the radio wave leakage unit and the single pipe unit. Thus, the communication system based on the waveguide antenna according to the present invention is composed of the radio wave leakage portion, the single pipe portion, and the connection portion.
In the communication system using the waveguide antenna, it is preferable that the radio wave leakage portion is provided with a groove for leaking the radio wave, and the single pipe portion is attached with a flange joint as a connection fitting to a single pipe used in a construction site. Thus, the waveguide antenna of the present invention can be manufactured using a material that is easily supplied in the construction site without using a special material. Further, the respective components are connected to each other by bolting, so that the components can be easily attached and detached at a construction site. The connection fitting is not limited to a flange joint, and may be another connection fitting.
In the communication system using the waveguide antenna, it is preferable that the radio wave leakage section and the single tube section are alternately arranged to form one unit, and a plurality of units are connected to form a waveguide antenna having an arbitrary length. This makes it possible to freely adjust the length of the waveguide antenna without meaningfully leaking the radio wave from the waveguide antenna, and to reliably transmit the radio wave inside the waveguide.
In the communication system using the waveguide antenna, it is preferable that the flange joint of the connection portion is easily adjusted in length by preparing and using any of the size adjustment rings having different plate thicknesses. This enables length adjustment at a construction site, and radio waves can be transmitted to any position of each floor.
In the communication system using the waveguide antenna, it is preferable that a corrugated portion or a bent pipe is attached to the connection portion so as to be freely corresponding to a curved line or a broken line. This allows absorbing construction errors at a construction site and transmitting radio waves to an arbitrary position. In addition, in the case where the antenna path is bent or bent, the waveguide antenna can be made to follow them.
In the communication system using the waveguide antenna, the radio wave leakage portion is preferably made of aluminum, stainless steel, or copper, and the single pipe portion is preferably galvanized. This makes the surface of the waveguide antenna, such as the radio wave leakage portion and the single-tube portion, smoother, and enables efficient transmission inside the waveguide antenna.
In the communication system using the waveguide antenna, it is preferable that an antenna path extending in the vertical direction is provided as a temporary installation in a multi-story building, that the radio wave is leaked by at least one radio wave leakage portion in a story where the radio wave is transmitted, and that a single-pipe portion having no slot is used in a story where the radio wave is not transmitted. This makes it possible to transmit radio waves intensively only in the layer transmitting radio waves, thereby improving the efficiency of radio communication.
In the communication system using the waveguide antenna, it is preferable that the leaked radio waves be transmitted to the radio access points provided in the respective layers, and the radio waves be transmitted from the radio access points to the respective radio terminals through the radio mesh networks provided in the respective layers. Thus, by forming a wireless mesh network of a communication system using a waveguide antenna, radio waves can be reliably transmitted from a lower layer to an upper layer or to the end of each layer in a high-rise building or the like. Conventionally, a wireless mesh network in the high-rise building is constructed in each of upper and lower floors, but the wireless mesh network is not suitable for communication of vertical systems in the high-rise building because of the presence of obstructions. However, this problem can be solved by using the waveguide for communication of the longitudinal system. Although the same effect can be obtained by using LCX for a vertical system, the waveguide antenna is advantageous in comparison with LCX that is at risk of disconnection because the robustness of the system is required at the construction site.
In the communication system using the waveguide antenna, the single pipe portion is preferably fixed to a temporary installation material in the antenna passage or an iron portion fixed to the deck plate by a clamp. Thus, the single tube portion of the waveguide antenna can be effectively used and easily fixed to a temporary installation material, a deck plate, or the like.
In the waveguide antenna-based communication system, it is preferable that an input connector is provided at an end portion, and a wireless access point connected to a wireless LAN and the input connector are connected by a coaxial cable to transmit an electric wave. Thus, a coaxial cable or the like having good follow-up properties 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 the coaxial cable, and may be another connecting member.
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 radio access point, and radio waves are transmitted in the planar direction. Thus, by effectively utilizing the present invention together with a waveguide, a wireless mesh network can be constructed that transmits a wireless LAN to each wireless terminal in a high-rise building.
In the communication system using the waveguide antenna, it is preferable that the waveguide antenna composed of a plurality of systems is disposed in each antenna path in the vertical system or the planar direction, and each waveguide antenna is a communication system for transmitting the respective information to each wireless terminal in the high-rise building. Thus, as a communication system using a waveguide antenna, for example, a monitoring result of a construction site can be transmitted via a first waveguide antenna, and information such as a site construction inspection and construction data can be separately transmitted via another waveguide antenna such as a second or third waveguide antenna, thereby avoiding interference of radio waves.
In the waveguide antenna-based communication system, each waveguide antenna preferably has a dedicated wireless access point. Thus, the monitoring result of the construction site can be transmitted using the first wireless access point, and information such as site construction inspection and construction data can be separately transmitted using another wireless access point such as the second or third wireless access point, thereby avoiding interference of radio waves and the like.
In the communication system using the waveguide antennas, it is preferable that each of the waveguide antennas is connected to a dedicated environment sensor provided in a multi-story building, and transmits collected environment data to a data center. This makes it possible to differentiate the waveguide antennas for data communication for each environment sensor, and thus to avoid interference of radio waves and the like.
Another object of the present invention is to solve the above problems and provide a simple waveguide antenna-based communication system that forms a wireless communication network for reliably transmitting monitoring information and the like of a construction site to a monitoring center and the like by a waveguide antenna and flexibly copes with the progress of construction.
As described above, according to the waveguide antenna-based communication system of the present invention, it is possible to provide a waveguide antenna-based communication system including: the construction materials that can be supplied at the construction site are used to reliably transmit information such as monitoring results, site construction inspections, and construction data at the construction site to a monitoring center or the like, and can be freely attached and detached and reused by renting, thereby being used for temporarily installed equipment.
Further, according to the waveguide antenna-based communication system of the present invention, it is possible to provide a simple waveguide antenna-based communication system as follows: a wireless communication network is formed in which information such as monitoring results, site construction inspection, and construction data at a construction site is reliably transmitted to a monitoring center or the like using a waveguide antenna, and the progress of construction can be flexibly coped with.
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 single tube portion of the waveguide antenna.
Fig. 4 is a perspective view, a cross-sectional view, and a side view of a bellows portion 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 diagram showing an embodiment of a wireless communication system in which a waveguide is provided in an antenna path.
Fig. 7 is an explanatory diagram showing evaluation results in 2 floors of a high-rise building in which no waveguide antenna is provided.
Fig. 8 is an explanatory diagram showing 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 tube antenna)
The waveguide antenna 1 of the present invention will be described in detail below with reference to the drawings. Fig. 1 is a schematic configuration diagram of a waveguide antenna 1 according to an embodiment of the present invention. In fig. 1 (a), a radio wave leakage section 2 that leaks a radio wave and connection sections 4 provided at both ends of the radio wave leakage section 2 are shown as component structures of a waveguide antenna 1. The slot 7 is provided in the radio wave leakage portion 2. Fig. 1 (b) shows a basic unit of the waveguide antenna 1, and the single tube portion 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 portions 2.
Thus, the waveguide antenna 1 of the present invention is configured with the radio wave leakage section 2, the connection section 4, and the single tube section 3 as basic units. The basic unit can be repeatedly connected to have a predetermined length. The waveguide antenna 1 is installed in an antenna path extending in the vertical direction at the construction site, thereby enabling a wireless communication system at the construction site. Here, the "antenna path extending in the longitudinal system at the construction site" refers to an antenna path which can cause the waveguide antenna 1 to extend in the longitudinal system at the construction site of a high-rise building or the like without being obstructed, such as a staircase or an elevator shaft, and allows radio waves to leak from the radio wave leaking unit 2 at a predetermined floor. Here, since the radio wave is transmitted inside the waveguide antenna 1, not inside the antenna passage, 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 part of waveguide antenna)
Fig. 2 to 6 show the shape and function of each structural component 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 sectional view showing the shape and structure of the single-tube part 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 used for the connecting portion 4 so as to correspond to a 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), a part of the radio wave leakage section 2 is provided with slots 7 at two locations. The slots 7 are arranged to have angles in opposite directions with respect to the main axis so that radio waves transmitted inside the radio wave leakage section 2 are easily leaked.
Fig. 3 shows a single pipe section 3, a clamp 5a for connecting one end of the single pipe section 3 to the connection section 4, and a clamp 5b for connecting the other end of the single pipe section 3 to the input connector 6. As shown in fig. 3 (a), the jigs 5a and 5b are provided with jig fixing bolt holes 23. The clamp itself is fixed to the single-pipe portion 3 by clamp fixing bolts 22. Further, the clamps 5a and 5b are provided with connecting bolt holes 25, and the single pipe portion 3, the connecting portion 4, and the input connector 6 are connected by connecting bolts 24, respectively.
The single pipe portion 3 can be directly used as a single pipe duct 9 which is often used for temporary installation in a construction site. Further, the jigs 5a, 5b can also be used as they are as blocks 5a, 5b which are often used for temporary setting members and the like in construction sites. Therefore, the waveguide antenna 1 can be manufactured by a construction material used on a daily basis in a construction site. Furthermore, the remaining single pipe conduit 9 and clamps 5a, 5b can be returned to the construction site for use.
Fig. 4 shows the connecting 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, one end is connected to the radio wave leaking portion 2 and the other end is connected to the clamps 5a and 5b of the single pipe portion 3, so that flange joints 8a and 8b are provided at both ends, connection bolt holes 25 are provided in the connection direction of the flange joints 8a and 8b, and the connection portion is connected to members connected in each direction by connection bolts 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 size adjusting rings 10 having different plate thicknesses and using any one of them.
As shown in fig. 4 (c), the bellows portion 14 can be provided in the connecting portion 4 in accordance with the change in the curve. The bellows portion 14 is formed of a flexible hose or the like that can freely correspond to a curved line or a broken line. The bellows portion 14 is sealed so that the radio wave flowing through the connection portion 4 does not leak. By effectively utilizing the corrugated portion 4, even if the linearity of the antenna path changes, the antenna can be sufficiently handled.
Fig. 5 shows the shape and structure of the input connector 6 of the waveguide antenna 1. A connector 18 is provided at the tip of the input connector 6 and connected to the wireless access point 16 via a coaxial cable 17. Further, there are connecting bolt holes 25 connected to the clamps 5a, 5b of the single-pipe portion 3 by connecting bolts 24.
(communication System Using waveguide)
Fig. 6 shows an embodiment of a wireless communication system in which a waveguide 1 is provided in an antenna path. When 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 the present specification. In fig. 6, monitoring of the wireless mesh network 36 based on the B layer 27, the environmental sensors 30, and the like in the successive a layer 26, B layer 27, and 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 by 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 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, which is 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, wirelessly communicates with the waveguide 1. An environment measuring device such as the temperature sensor box 32 monitors the working environment at the construction site, and transmits the monitoring result to a monitoring center or the like. Further, the construction situation and the like can be grasped by the monitoring camera 29 and the like installed at the construction site. In addition, the waveguide 1 can be used to perform wireless communication with a monitoring center or the like for field construction inspection and construction data.
(evaluation results based on waveguide)
Fig. 7 shows the evaluation results of radio wave measurement in 2 floors of a high-rise building in which the waveguide 1 is not installed. 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 made for 2 stories and 9 stories of a 9-story high-rise building. Fig. 7 and 8 show the case where the waveguide 1 is not provided in the antenna passage such as the elevator shaft or the stairwell, and fig. 9 and 10 show the case where the waveguide 1 is provided in the antenna passage such as the elevator shaft or the stairwell, and the evaluation results are displayed in six ranks (30dB or more, 25 to 29dB, 20 to 24dB, 15 to 19dB, 10 to 14dB, and 9dB or less) by measuring the reception power level in the corridor or the intensity of the radio wave by rssi (dB) depending on whether or not the waveguide 1 is provided.
In the measurement of 2 floors with a high reception level, in the case of fig. 7 where the waveguide 1 is not provided, the maximum is 20 to 24dB in the corridor around the staircase, but 10 to 14dB in the room enclosed by the wall. On the other hand, in the case of the installation of the waveguide 1 in fig. 10, it is considered that the waveguide 1 exhibits effects in a corridor around a staircase of at most 30dB or more and also in a room enclosed by walls of 15 to 19 dB.
In the 9 layers with the lower reception level, the reception power level is almost 9dB or less in the case of fig. 8 where the waveguide 1 is not provided. On the other hand, in the case where the waveguide 1 of fig. 9 is provided, it is understood that the maximum reception power level of 2 floors is maintained in the corridor around the staircase at 30dB or more.
From the evaluation results of the radio wave measurement of these high-rise buildings, when the waveguide 1 is used, since the reception power level at the high-rise floor is hardly found to be lowered, it is proved that the waveguide 1 has stable characteristics in the height direction.
The structure, shape, size, and arrangement of the waveguide antenna 1 or the waveguide 1 described in the above embodiments are only schematically illustrated 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 various modifications can be made without departing from the scope of the technical idea described in the claims.
Description of the reference numerals
1 waveguide tube antenna or waveguide, 2 electric wave leakage part, 3 single tube part, 4 connecting part, 5a, 5B clamp, 6 input connector, 7 slotted hole, 8a, 8B flange joint, 9 single tube pipeline, 10 size adjusting ring, 14 corrugated part, 16 wireless access point, 17 coaxial cable, 18 connector part, 22 clamp fixing bolt, 23 clamp fixing bolt hole, 24 connecting bolt, 25 connecting bolt hole, 26A layer, 27B layer, 28C layer, 29 monitoring camera, 30 environment sensor, 31 environment sensor body, 32 temperature sensor box, 33 flammable gas sensor box, 34 virus detection box, 35 wireless terminal, 36 wireless mesh network.
Claims (15)
1. A communication system using a waveguide antenna, comprising a radio wave leakage unit for transmitting radio waves inside and leaking the radio waves, and a single pipe unit for connecting the radio wave leakage unit to an input connector via a single pipe so as to be adjustable in length and preventing the leakage of the radio waves, wherein the input connector is connected to a radio access point, and radio communication between a radio device and a radio terminal is performed by the leaked radio waves among the radio waves transmitted from the radio access point.
2. The waveguide-antenna-based communication system according to claim 1, comprising a connection portion connecting the electric wave leakage portion and the single-tube portion.
3. The waveguide-antenna-based communication system according to claim 1 or 2, wherein the electric wave leakage portion is provided with a groove for leaking the electric wave, and the single pipe portion is provided with a flange joint as a connecting metal member on the single pipe used at a construction site.
4. A waveguide antenna-based communication system according to any one of claims 1 to 3, wherein the radio wave leakage part and the single-tube part are alternately arranged to form one unit, and a plurality of units are connected to form a waveguide antenna of any length.
5. A waveguide antenna-based communication system according to any one of claims 2 to 4, wherein the flange joint of the connection portion is adjusted in length by preparing size adjustment rings having different plate thicknesses and using any one of them.
6. A waveguide antenna based communication system according to any of claims 2 to 5, wherein a corrugated portion or a bent pipe is attached to the connection portion so as to be freely corresponding to a curved line or a broken line.
7. A waveguide antenna-based communication system according to any one of claims 1 to 6, wherein the radio wave leaking portion is made of aluminum, stainless steel or copper, and the single-tube portion is galvanized.
8. A waveguide antenna-based communication system according to any one of claims 1 to 7, wherein an antenna path extending in a vertical system is provided as a temporary installation in a multi-story building, the radio wave is leaked by at least one of the radio wave leaking portions in a story transmitting the radio wave, and the single-pipe portion having no slot is used in a story not transmitting the radio wave.
9. The waveguide antenna-based communication system according to claim 1, wherein the leaked electric wave is transmitted to the wireless access points provided in the respective layers, and the electric wave is transmitted from the wireless access points to the wireless terminals via wireless mesh networks provided in the respective layers.
10. A waveguide antenna based communication system according to claim 1 or 2, wherein the single tube part is secured by clamping means to a temporary setting material in the antenna passage or to an iron part of the deck plate.
11. A waveguide antenna-based communication system according to any one of claims 1 to 3, 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 an electric wave.
12. The waveguide antenna-based communication system according to claim 4, wherein at least one of the electric wave leakage portions is disposed in an antenna path extending in a planar direction from the radio access point, and transmits the electric wave in the planar direction.
13. A waveguide antenna-based communication system according to any one of claims 1 to 5, wherein the waveguide antennas of a plurality of systems are arranged in respective antenna paths in a longitudinal system or a planar direction, and the respective waveguide antennas are communication systems for transmitting respective information to the respective wireless terminals in a high-rise building.
14. A waveguide antenna based communication system according to claim 6, wherein each waveguide antenna has a dedicated radio access point.
15. The waveguide antenna based communication system according to claim 8, wherein each of the waveguide antennas is connected to a dedicated environment sensor provided in the multi-story building, and transmits the collected environment 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 |
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| CN113940009A true CN113940009A (en) | 2022-01-14 |
| CN113940009B CN113940009B (en) | 2023-04-25 |
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| CN202080043248.XA Active CN113940009B (en) | 2019-07-16 | 2020-07-14 | Communication system based on waveguide antenna |
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| JP (1) | JP7252849B2 (en) |
| CN (1) | CN113940009B (en) |
| WO (1) | WO2021010384A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660826A (en) * | 2023-05-17 | 2023-08-29 | 中天射频电缆有限公司 | Leakage device, positioning method and electronic equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660826A (en) * | 2023-05-17 | 2023-08-29 | 中天射频电缆有限公司 | Leakage device, positioning method and electronic equipment |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113940009B (en) | 2023-04-25 |
| WO2021010384A1 (en) | 2021-01-21 |
| JP2021016114A (en) | 2021-02-12 |
| JP7252849B2 (en) | 2023-04-05 |
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