JP2021012148A - Vibration observation system - Google Patents

Abstract

To allow a vibration sensor for performing radio communication within a space in which communication is difficult to be capable of communicating with the outside.SOLUTION: A vibration observation system for observing vibration of a structure having first structure, second structure, and a space in which radio communication with the outside is difficult while being provided between the first structure and the second structure includes a first vibration sensor that is within the space in which communication is difficult and is attached to the first structure, a second vibration sensor that is within the space in which communication is difficult and is attached to the second structure, and a communication medium that performs radio communication with the first vibration sensor and the second vibration sensor, and is connected with a communicable space permitting radio communication with the outside of at least one of the first structure and the second structure.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vibration observation system.

As a vibration observation system for observing the vibration of a structure (for example, a building), a plurality of vibration sensors (for example, an accelerometer), an external communication device connected to each vibration sensor, and an external device capable of transmitting and receiving to and from an external communication device. Those equipped with a server are already well known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-254239

The layer (floor) of the structure may include a difficult-to-communicate space surrounded by concrete, for example, a seismic isolation layer provided with a seismic isolation device.

When a vibration sensor for wireless communication is provided in this difficult communication space, the detection result of the vibration sensor cannot be reliably acquired outside, so that the vibration in the difficult communication space cannot be accurately observed. ..

The present invention has been made in view of such a problem, and an object of the present invention is to enable a vibration sensor that performs wireless communication in a difficult communication space to communicate with the outside.

The main invention for achieving the above object has a first structure, a second structure, and a communication difficulty space provided between the first structure and the second structure, where wireless communication with the outside is difficult. A vibration observation system for observing the vibration of a structure, the first vibration sensor provided in the first structure in the difficult communication space and the second vibration sensor provided in the second structure in the difficult communication space. A communication medium connected to a communicable space capable of wirelessly communicating with the vibration sensor, the first vibration sensor, and the second vibration sensor, and wirelessly communicating with at least one of the first structure and the second structure. It is a vibration observation system characterized by having and.

Other features of the present invention will be clarified by the description in this specification and the accompanying drawings.

According to the present invention, a vibration sensor that performs wireless communication in a difficult communication space can communicate with the outside.

It is a schematic diagram of the vibration observation system of a building 1. It is a figure which shows the communication path of the vibration observation system in the seismic isolation layer 15 of 1st Embodiment. It is a figure which shows the communication path of the vibration observation system in the seismic isolation layer 15 of 2nd Embodiment. It is a figure which shows the communication path of the vibration observation system in the seismic isolation layer 15 of the modification of 2nd Embodiment. It is a schematic diagram of the vibration observation system of a building 100.

The present specification and the accompanying drawings clarify at least the following matters.

A vibration observation system that observes the vibration of a structure having a first structure, a second structure, and a communication difficulty space provided between the first structure and the second structure where wireless communication with the outside is difficult. The first vibration sensor attached to the first structure in the communication difficulty space, the second vibration sensor attached to the second structure in the communication difficulty space, and the above. Having a communication medium that wirelessly communicates with the first vibration sensor and the second vibration sensor and is connected to a communicable space capable of wireless communication with at least one of the first structure and the second structure. A vibration observation system featuring.

According to such a vibration observation system, a vibration sensor that performs wireless communication in a difficult communication space can communicate with the outside.

In such a vibration observation system, the communication medium can transmit and receive wireless communication signals of the first vibration sensor and the second vibration sensor in the communication difficulty space, and communicates with the communication difficulty space. It is desirable to include a conductor connecting in the available space and an external communication device arranged in the communicable space, capable of transmitting and receiving signals of wireless communication with the conductor, and capable of communicating with the outside.

According to such a vibration observation system, by using conductors such as equipment piping and power cables, a vibration sensor that performs wireless communication in a communication difficult space can communicate with the outside.

In such a vibration observation system, the communication medium is capable of transmitting and receiving wireless communication signals of the first vibration sensor and the second vibration sensor in the communication difficulty space, and is installed in the communication difficulty space. It is desirable to include an internal communication device, an external communication device arranged in the communicable space and capable of communicating with the outside, and a communication connection member for communicating and connecting the internal communication device and the external communication device.

According to such a vibration observation system, by connecting an internal communication device in a communication difficult space and an external communication device in a communication difficult space with a wired cable, a vibration sensor that performs wireless communication in the communication difficulty space can communicate with the outside. It becomes.

In such a vibration observation system, the first structure is a substructure, the second structure is a superstructure, and the communication difficulty space is provided between the substructure and the superstructure. It is a seismic space, and it is desirable that the internal communication device is installed in the superstructure in the seismic isolation space, and the external communication device is installed in the superstructure outside the seismic isolation space.

According to such a vibration system, the laying length of the wired cable can be shortened, and the risk of the wired cable being pulled or broken can be reduced.

In such a vibration observation system, the first structure is a substructure, the second structure is a superstructure, and the communication difficulty space is provided between the substructure and the superstructure. It is a seismic space, and it is desirable that the internal communication device is installed in the lower structure in the seismic isolation space, and the external communication device is installed in the superstructure outside the seismic isolation space.

According to such a vibration system, the degree of freedom in the arrangement and wiring of the internal communication device and the wired cable can be increased.

In such a vibration observation system, it is desirable that the external communication device is installed in the EPS room.

According to such a vibration observation system, it is possible to install an external communication device at a suitable place in the building.

=== 1st Embodiment ===
FIG. 1 is a schematic view of a vibration observation system of building 1 (corresponding to a structure), and FIG. 2 is a communication path of the vibration observation system in the seismic isolation layer 15 (corresponding to a seismic isolation space) of the first embodiment. It is a figure which shows.

In the drawings according to the present invention, in order to explain the present invention in an easy-to-understand manner, some members and devices (for example, a vibration sensor 20 provided in the building 10) are omitted from the description. In the following, the description of the omitted members and devices will also be omitted. Further, in the figures showing communication paths (FIGS. 2 to 4), each communication path is indicated by a double-headed arrow.

The vibration observation system is a system for observing the vibration of a structure (building 1), and in the first embodiment, it includes a vibration sensor 20, an external communication device 30, and a conductor 40. The vibration sensor 20, the external communication device 30, and the conductor 40 are provided inside the building 1.

The building 1 has a building 10 in the above-ground part and a seismic isolation layer 15 in the underground part. The building 10 is composed of a plurality of layers, and includes an EPS room 12 that penetrates the plurality of layers. The seismic isolation layer 15 is provided with a seismic isolation device 10a for suppressing the shaking of the building 10.

The EPS room 12 is a part of a small space partitioned from other rooms in order to pass trunk lines (cables, piping wiring, etc.) of electrical equipment in the building 10 in the vertical direction (overlapping direction of layers). The EPS room 12 is a communicable space. Here, the communicable space is a space capable of wireless communication with the outside of the building 1 (specifically, the external server 50 arranged outside the building 1) by LTE, Wifi, or the like. Since the EPS room 12 is a small space partitioned from other rooms through which the main line of the electrical equipment passes and is a communicable space, it is suitable as a place for installing the external communication device 30 in the building 10.

The seismic isolation layer 15 is a space surrounded by concrete. Specifically, the ground 3 side of the seismic isolation layer 15 is the first structure 15a (floor) formed of substantially one-sided concrete, and the building 10 side (upper side) of the seismic isolation layer 15 is formed of substantially one-sided concrete. The second structure is 15b (ceiling).

Then, the seismic isolation layer 15 has an opening except for a gap G provided so as not to come into contact with the ground 3 when the building 10 shakes (for example, in the event of an earthquake) and an entrance / exit to the seismic isolation layer 15. Almost nonexistent. Therefore, the seismic isolation layer 15 is a difficult communication space where wireless communication is difficult.

Here, the communication difficult space is a space in which wireless communication cannot be performed with the outside of the building 1 (specifically, an external server 50 arranged outside the building 1) by LTE, Wifi, etc., and wireless communication with the outside. It is not impossible, but it is a space where problems occur in wireless communication due to high communication error rate. As will be described in detail later, in the present embodiment, communication is possible in a difficult communication space by taking a measure of installing the conductor 40. That is, the communication difficulty space means that communication is difficult in the state before the countermeasure is taken.

That is, the building 1 has a first structure 15a, a second structure 15b, and a communication difficulty space provided between the first structure 15a and the second structure where wireless communication with the outside is difficult. Further, the first structure 15a is a lower structure, the second structure 15b is an upper structure, and the communication difficult space is a seismic isolation space (seismic isolation layer 15) provided between the lower structure and the upper structure. is there.

The vibration sensor 20 includes a first vibration sensor 20a provided in the first structure 15a and a second vibration sensor 20b provided in the second structure 15b inside the seismic isolation layer 15. That is, the vibration sensor 20 includes a first vibration sensor 20a attached to the first structure 15a in the communication difficulty space and a second vibration attached to the second structure 15b in the communication difficulty space. It has a sensor 20b and.

The first vibration sensor 20a (second vibration sensor 20b) is an acceleration sensor that performs wireless communication, detects the acceleration of vibration of the installed first structure 15a (second structure 15b), and obtains the detection result. Send.

The external communication device 30 is installed in the communicable space of the EPS room 12 of the building 10 (installed at an appropriate place in the building 10), is connected to the external server 50 so as to be able to transmit and receive through wireless communication, and is connected to the vibration sensor 20. The detection result is received and the detection result is transmitted to the external server 50.

The conductor 40 is a trunk line (cable, piping wiring, etc.) of electrical equipment provided in the EPS room 12, and is provided so as to vertically penetrate the EPS room 12 and the seismic isolation layer 15 of the building 10. More specifically, the second structure 15b is formed with a through hole 15h penetrating in the vertical direction (vertical direction), the conductor 40 penetrates the through hole 15h, and the conductor 40 communicates with the communicable space. It is provided across difficult spaces. Then, by providing the conductor 40 in this way, the conductor 40 has a function of causing (receiving) the detection result emitted by the vibration sensor 20 to the external communication device 30.

The conductor 40 may be a conductive cable (electric wire) or piping, and examples of the cable include a power cable and a communication cable (LAN cable and the like). Also, such cables may or may not be coated. Further, examples of piping include water supply / drainage pipes and gas pipes (FIG. 2 shows an example of piping).

The external server 50 is connected to the external communication device 30 so as to be able to transmit and receive, and receives the detection result from the external communication device 30. Then, the external server 50 estimates, for example, damage to the building 10 from the detection result of the second vibration sensor 20b (from the shaking condition of the building 10), and from the detection results of the first vibration sensor 20a and the second vibration sensor 20b. The effect of the seismic isolation device 10a is calculated (from the shaking condition of the ground 3 and the building 10).

In the communication path according to the first embodiment, as shown in FIG. 2, the detection results emitted from the first vibration sensor 20a and the second vibration sensor 20b are received by the external communication device 30 via the conductor 40. There is. That is, the first vibration sensor 20a and the second vibration sensor 20b that perform wireless communication in the difficult communication space can communicate with the external server 50 via the conductor 40.

Specifically, the electromagnetic waves of wireless communication emitted from the first vibration sensor 20a and the second vibration sensor 20b cause voltage fluctuations in the conductor 40 according to the electromagnetic waves. Then, the fluctuations of the magnetic field and the electric field generated around the conductor 40 due to the voltage fluctuations are received by the external communication device 30 and transmitted to the external server 50. Therefore, the conductor 40 is not directly connected to the vibration sensor 20 and the external communication device 30 by a cable or the like.

That is, the vibration observation system of the first embodiment wirelessly communicates with the first vibration sensor 20a and the second vibration sensor 20b, and wirelessly communicates with the external server 50 (provided on the second structure 15b side) of the second structure 15b. It has an external communication device 30 and a conductor 40 (both corresponding to communication media) connected to a communicable space capable of the above.

In other words, the communication medium of the first embodiment can transmit and receive wireless communication signals of the first vibration sensor 20a and the second vibration sensor 20b in the difficult communication space, and is in the communication difficult space and in the communicable space. It is provided with a conductor 40 for connecting the above, and an external communication device 30 which is arranged in a communicable space and can transmit and receive signals for wireless communication with the conductor 40 and can communicate with an external server 50.

In the first embodiment, by using the conductor 40 such as the equipment piping and the power cable, the vibration sensor 20 that performs wireless communication in the difficult communication space can communicate with the outside, and the vibration in the difficult communication space can be accurately observed. It becomes possible to do.

=== Second embodiment ===
Next, the second embodiment will be described with reference to FIG. FIG. 3 is a diagram showing a communication path of the vibration observation system in the seismic isolation layer 15 of the second embodiment. The same reference numerals are given to the parts having the same configuration as that of the first embodiment (FIG. 2), and the description thereof will be omitted.

The difference between the second embodiment and the first embodiment is that the second embodiment includes an internal communication device 32 and a wired cable 42 (corresponding to a communication connection member) instead of the conductor 40 of the first embodiment. .. That is, the vibration observation system according to the second embodiment includes a vibration sensor 20, an external communication device 30, an internal communication device 32, and a wired cable 42. As will be described in detail later, in the present embodiment, communication is possible in a difficult communication space by taking measures such as installing an internal communication device 32 and a wired cable 42. That is, the communication difficulty space means that communication is difficult in the state before the countermeasure is taken.

The internal communication device 32 is provided in the seismic isolation layer 15 and is connected to the first vibration sensor 20a and the second vibration sensor 20b so as to be able to transmit and receive through wireless communication, and the first vibration sensor 20a and the second vibration sensor 20b. Receive the detection result.

The wired cable 42 is provided so as to straddle the EPS room 12 and the seismic isolation layer 15 of the building 10 through the through hole 15h, and is connected to the internal communication device 32 on one side and the external communication device 30 on the other side. You are connected. That is, the wired cable 42 connects the internal communication device 32 in the communication difficult space and the external communication device 30 in the communication possible space by wire.

Then, when the internal communication device 32 and the external communication device 30 are connected by wire in this way, the number of the wired cables 42 is reduced as compared with the case where each vibration sensor 20 and the external communication device 30 are connected by the wired cable 42 (). One can be used), and the length can be shortened.

As shown in FIG. 3, the communication path according to the second embodiment is such that the internal communication device 32 provided inside the same seismic isolation layer 15 as the first vibration sensor 20a and the second vibration sensor 20b is the first vibration sensor 20a. The wireless communication radio wave emitted from the second vibration sensor 20b is received, and the radio wave signal is transmitted to the external communication device 30 through the communication-dedicated wired cable 42 with less signal deterioration.

That is, the vibration observation system of the second embodiment wirelessly communicates with the first vibration sensor 20a and the second vibration sensor 20b, and wirelessly communicates with the external server 50 (provided on the second structure 15b side) of the second structure 15b. It has an external communication device 30, an internal communication device 32, and a wired cable 42 (all corresponding to communication media) connected to a communicable space capable of enabling the communication.

In other words, the communication medium of the second embodiment can transmit and receive wireless communication signals of the first vibration sensor 20a and the second vibration sensor 20b in the communication difficulty space, and is installed inside the communication difficulty space. It includes a communication device 32, an external communication device 30 arranged in a communicable space and capable of communicating with an external server 50, and a wired cable 42 for communicating and connecting the internal communication device 32 and the external communication device 30.

In the second embodiment, the internal communication device 32 in the communication difficult space and the external communication device 30 in the communication possible space are connected by a wired cable 42, so that the vibration sensor 20 that performs wireless communication in the communication difficulty space communicates with the outside. This makes it possible to accurately observe vibrations in difficult-to-communicate spaces.

Further, the external communication device 30 and the internal communication device 32 of the second embodiment are provided on the second structure 15b side (building 10 side) of the seismic isolation layer 15. That is, the internal communication device 32 is installed in the superstructure in the seismic isolation space (inside the seismic isolation layer 15), and the external communication device 30 is installed in the superstructure outside the seismic isolation space (outside the seismic isolation layer 15). There is.

When the external communication device 30 and the internal communication device 32 are installed in this way, the laying length of the wired cable 42 may be shorter than when the internal communication device 32 is provided on the first structure 15a side (ground 3 side). Further, when the internal communication device 32 is provided on the first structure 15a side (ground 3 side), the building 10 sways and a relative displacement occurs between the second structure 15b (building 10) and the first structure 15a (ground 3). When this occurs, there is a risk that the wired cable 42 will be pulled or broken, but such a problem does not occur.

Next, a modified example of the second embodiment will be described with reference to FIG. FIG. 4 is a diagram showing a communication path of the vibration observation system in the seismic isolation layer 15 of the modified example of the second embodiment. In the modified example, the internal communication device 32 is provided in the first structure 15a on the ground 3 side. That is, the internal communication device 32 is installed in the lower structure in the seismic isolation space (inside the seismic isolation layer 15), and the external communication device 30 is installed in the upper structure outside the seismic isolation space (outside the seismic isolation layer 15). There is.

In such a modification, the length of the wired cable 42 is provided with a margin in order to deal with the relative displacement between the building 10 and the ground 3 that occurs when the building 10 shakes. In the case of this modification, since the internal communication device 32 and the wired cable 42 can be arranged and wired in addition to the second structure 15b (ceiling) of the seismic isolation layer 15, the degree of freedom in arrangement and wiring can be increased.

=== About other embodiments ===
The above embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof, and the present invention includes an equivalent thereof.

In the above embodiment, the vibration sensor 20 is an accelerometer that detects the acceleration of vibration, but the present invention is not limited to this. For example, the vibration sensor 20 may be a speedometer that detects the speed of vibration.

Further, in the above embodiment, the communication difficult space is the seismic isolation layer 15, but the space is not limited to this. For example, the floor or room of the building 10 where communication is difficult may be a space where communication is difficult.

Further, in the above embodiment, the external communication device 30 is installed in the EPS room 12, but the present invention is not limited to this. For example, even if the external communication device 30 is installed in a communicable space such as an MDF room accommodating a telephone line, an IDF room accommodating wiring branched from the MDF room, and an electric room accommodating a transformer and a switchboard. Good.

Further, in the above embodiment, the seismic isolation layer 15 is provided in the underground portion of the building 1, but the present invention is not limited to this. For example, as shown in FIG. 5, the seismic isolation layer 15 may be provided on the ground portion.

FIG. 5 is a schematic view of the vibration observation system of the building 100. Building 100 (corresponding to a structure) has a building 10 and a seismic isolation layer 15 on the ground portion, and constitutes an upper building 10u, a seismic isolation layer 15, and a lower building 10d in order from the upper side. .. In this case, the vibration observation system does not observe the vibration of the building 10 and the ground 3, but observes the vibration of the upper building 10u and the lower building 10d.

Further, in the building 100, the external communication device 30 is provided on the side of the first structure 15a. That is, the vibration observation system of FIG. 5 can wirelessly communicate with the first vibration sensor 20a and the second vibration sensor 20b, and can wirelessly communicate with the external server 50 (provided on the first structure 15a side) of the first structure 15a. It has a communication medium connected to a communicable space.

1 Building (structure)
3 Ground 10 Building 10a Seismic isolation device 10u Upper building 10d Lower building 12 EPS room (communicable space)
15 Seismic isolation layer (seismic isolation space. Communication difficult space)
15a First structure 15b Second structure 15h Through hole 20 Vibration sensor 20a First vibration sensor 20b Second vibration sensor 30 External communication device (communication medium)
32 Internal communication device (communication medium)
40 conductor (communication medium)
42 Wired cable (communication connection member, communication medium)
50 External server (external)
100 buildings (structures)
G gap

Claims (6)

A vibration observation system for observing the vibration of a structure having a first structure, a second structure, and a communication difficulty space provided between the first structure and the second structure where wireless communication with the outside is difficult. There,
In the communication difficulty space, the first vibration sensor attached to the first structure and
In the communication difficulty space, the second vibration sensor attached to the second structure and
A communication medium that wirelessly communicates with the first vibration sensor and the second vibration sensor and is connected to a communicable space capable of wireless communication with at least one of the first structure and the second structure.
A vibration observation system characterized by having. The vibration observation system according to claim 1.
The communication medium is
A conductor capable of transmitting and receiving wireless communication signals of the first vibration sensor and the second vibration sensor in the difficult communication space and connecting the difficult communication space and the communicable space.
An external communication device that is arranged in the communicable space, can transmit and receive wireless communication signals to and from the conductor, and can communicate with the outside.
A vibration observation system characterized by being equipped with. The vibration observation system according to claim 1.
The communication medium is
An internal communication device capable of transmitting and receiving wireless communication signals of the first vibration sensor and the second vibration sensor in the difficult communication space and installed in the difficult communication space.
An external communication device arranged in the communicable space and capable of communicating with the outside,
A communication connection member for communicating and connecting the internal communication device and the external communication device,
A vibration observation system characterized by being equipped with. The vibration observation system according to claim 3.
The first structure is a substructure and
The second structure is a superstructure and
The communication difficulty space is a seismic isolation space provided between the lower structure and the upper structure.
The internal communication device is installed in the superstructure in the seismic isolation space.
The external communication device is a vibration observation system characterized in that it is installed in the superstructure outside the seismic isolation space. The vibration observation system according to claim 3.
The first structure is a substructure and
The second structure is a superstructure and
The communication difficulty space is a seismic isolation space provided between the lower structure and the upper structure.
The internal communication device is installed in the substructure in the seismic isolation space.
The external communication device is a vibration observation system characterized in that it is installed in the superstructure outside the seismic isolation space. The vibration observation system according to any one of claims 2 to 5.
A vibration observation system characterized in that the external communication device is installed in the EPS room.

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