KR20170052337A - Apparatus and method for real-time monitoring of ground deformation in tunnel - Google Patents

Apparatus and method for real-time monitoring of ground deformation in tunnel Download PDF

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KR20170052337A
KR20170052337A KR1020150154663A KR20150154663A KR20170052337A KR 20170052337 A KR20170052337 A KR 20170052337A KR 1020150154663 A KR1020150154663 A KR 1020150154663A KR 20150154663 A KR20150154663 A KR 20150154663A KR 20170052337 A KR20170052337 A KR 20170052337A
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South Korea
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tunnel
sensing data
sensor
ground displacement
sensor nodes
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KR1020150154663A
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Korean (ko)
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KR101994638B1 (en
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최병철
류재홍
정훈
박주덕
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한국전자통신연구원
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid

Abstract

An apparatus and method for real-time monitoring of ground displacement in a tunnel are disclosed. The apparatus for real-time monitoring of ground displacement in a tunnel including a plurality of sensor nodes linearly installed in a tunnel according to the present invention includes a plurality of sensor nodes for transmitting sensed data generated by detecting a ground displacement state in a tunnel to another sensor node A plurality of anchor sensor nodes for relaying the sensing data received from the plurality of lower sensor nodes, and a gateway for transmitting the final sensing data received from the anchor sensor node to an external management center using the network.

Figure P1020150154663

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and method for real-time monitoring of a ground displacement in a tunnel,

TECHNICAL FIELD [0001] The present invention relates to a technique for monitoring a ground displacement in a tunnel, and more particularly, to a technique for monitoring a ground displacement state surrounding a tunnel in real time using a wireless sensor network.

When tunnel construction is carried out, blasting work using explosives with excellent economic efficiency is mainly used as excavation method of rock mass. In order to monitor the ground displacement at the top of the tunnel after the blasting operation, a person has manually measured the ground displacement at the top of the tunnel after the blasting, and after the tunnel is completed, A person manually measures the ground displacement state surrounding the ground.

However, manual measurement by a man can not grasp the ground displacement state at the top of the tunnel which changes rapidly during the blasting work. Therefore, there is a need for a technique to monitor the ground displacement information in real time by applying the ground displacement sensor and the wireless sensor network when the tunnel is blasted or after the tunnel is completed.

In order to transmit data sensed by the ground displacement sensing module installed in the tunnel to the ground displacement management platform connected to the external internet, the sensing data collected by each sensing module in the tunnel must be transmitted to the external gateway. In this case, the sensing data can be transmitted as multi-hop by using the sensor node connected to each sensing module as a relay node by the long distance data transmission method in the tunnel.

Here, each relay node relays the obligation to transmit the collected data from the sensor node connected to itself and the sensing data transmitted from the previous node. In multi - hop sensing data transmission using relay nodes, traffic is concentrated on each relay node. Also, if the distance between sensor nodes is close, transmission based on hopping between neighboring sensor nodes is very inefficient.

 Therefore, the need for a linear network structure that improves inefficiency based on a one-dimensional linear sensor network is urgently needed.

Korean Patent Publication No. 10-2014-0081726, published on Jul. 01, 2014 (name: tunnel monitoring sensor)

It is an object of the present invention to enable real-time monitoring of a ground change state in a tunnel in a remote management platform.

It is also an object of the present invention to predict and prevent occurrence of a disaster by monitoring ground displacement data in real time.

It is also an object of the present invention to reduce the traffic load that can occur in a linear sensor network.

It is also an object of the present invention to solve the problem of data transmission delay occurring in a linear sensor network.

It is also an object of the present invention to improve the reliability of wireless transmission of sensing data by constructing a wireless communication sensor node in a tunnel in a cross arrangement and advantageously in a radio wave environment.

According to another aspect of the present invention, there is provided an apparatus for real-time monitoring of ground displacement in a tunnel including a plurality of sensor nodes linearly installed in a tunnel according to the present invention, A plurality of anchor sensor nodes for relaying the sensing data received from a plurality of the lower sensor nodes and a final sensing data received from the anchor sensor node to an external management center Lt; / RTI >

In this case, the lower sensor node and the anchor sensor node may collect the sensing data from a plurality of unit sensor modules installed along the tunnel arc to detect the ground displacement state in the tunnel.

Here, the lower sensor node and the anchor sensor node include a sensor matching unit for matching the plurality of unit sensor modules and receiving the sensing data, an MCU for processing the sensing data in a form capable of wireless transmission / reception, A wireless transmission / reception matching unit for wirelessly transmitting / receiving sensing data, and a power matching unit for supplying power to the sensor node.

At this time, the anchor sensor node can communicate with the neighboring anchor sensor node using the multi-hop communication method.

In this case, the lower sensor node and the anchor sensor node may transmit the sensing data to the anchor sensor node installed at a position spaced apart from each other.

A method for real-time monitoring of ground displacement in a tunnel performed by an apparatus for real-time monitoring of ground displacement in a tunnel according to an embodiment of the present invention includes generating sensing data by detecting a ground displacement state in a tunnel, Transmitting the sensed data received from the plurality of lower sensor nodes to another anchor sensor node or gateway by relaying the sensed data received from the anchor sensor node to the anchor sensor node, To the external management center.

In this case, sensing the ground displacement state of the tunnel and generating sensing data may collect the sensing data from a plurality of unit sensor modules installed along the tunnel arc to detect the ground displacement state in the tunnel.

The step of detecting the ground displacement state in the tunnel and generating sensing data may include receiving the sensing data by matching with the plurality of unit sensor modules, processing the sensing data in a form capable of wireless transmission / reception And transmitting the processed sensing data to the anchor sensor node.

At this time, relaying the sensing data received from the plurality of lower sensor nodes and transmitting the sensing data to another anchor sensor node or gateway performs communication with the neighboring anchor sensor node using the multi-hop communication method .

At this time, the step of transmitting the generated sensing data to the anchor sensor node may transmit the sensing data to the anchor sensor nodes installed at positions spaced apart from each other.

According to the present invention, it is possible to monitor the ground change state in the tunnel in real time on a remote management platform.

Further, according to the present invention, occurrence of a disaster can be predicted and prevented by monitoring ground displacement data in real time.

In addition, according to the present invention, a traffic load that may occur in a linear sensor network can be reduced.

In addition, according to the present invention, it is possible to solve the data transmission delay problem occurring in the linear sensor network.

In addition, according to the present invention, the reliability of wireless transmission of sensing data can be improved by constructing a wireless communication sensor node in a tunnel in a cross arrangement and advantageously in a radio wave environment.

1 is a view showing an apparatus for real-time monitoring of ground displacement in a tunnel according to an embodiment of the present invention.
2 is a flowchart illustrating a method for real-time monitoring of ground displacement in a tunnel according to an embodiment of the present invention.
3 is a diagram illustrating a sensing module according to an embodiment of the present invention.
4 is a diagram illustrating a configuration of a sensor node according to an embodiment of the present invention.
5 is a diagram illustrating a configuration of a plurality of unit sensor modules and a sensor node according to an embodiment of the present invention.
FIG. 6 is a view for explaining placement positions of sensor nodes in a tunnel according to an exemplary embodiment of the present invention. Referring to FIG.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing an apparatus for real-time monitoring of ground displacement in a tunnel according to an embodiment of the present invention.

As shown in FIG. 1, the real-time monitoring apparatus 100 for ground displacement in a tunnel includes a plurality of lower sensor nodes 110a, 110b, 110n, 130a, 130b, 130n, 150a, 150b, 150n, 120, 140, and 160, and a gateway 170.

First, the lower sensor nodes 110a, 110b, 110n, 130a, 130b, 130n, 150a, 150b, and 150n detect the ground displacement state in the tunnel to generate sensing data, and transmit the generated sensing data to neighboring anchor sensor nodes (120, 140, 160).

The lower sensor nodes 110a, 110b, 110n, 130a, 130b, 130n, 150a, 150b and 150n may include sensors for measuring strain gauges, angles, have.

Next, the anchor sensor nodes 120, 140, and 160 relay the sensing data received from the plurality of lower sensor nodes, and transmit sensing data to the other anchor sensor nodes or the gateway.

In this case, the anchor sensor nodes 120, 140, and 160 also include sensors for measuring strain gauges, angles, tilt, and the like, as well as lower sensor nodes. And transmit the generated sensing data to another anchor sensor node or gateway 170 together with the sensing data received from the lower sensor nodes 110a, 110b, 110n, 130a, 130b, 130n, 150a, 150b, 150n .

The gateway 170 is located in a location where it is easy to connect to a communication network inside or outside the tunnel and is connected to the external Internet 200 as an external communication network to transmit sensing data to the ground displacement management platform 250 connected to the external Internet 200. [ Lt; RTI ID = 0.0 > and / or < / RTI > Here, the gateway 170 may be connected in various configurations such as a wired LAN, a Wi-Fi, and a mobile communication network according to the communication network conditions of the external Internet 200.

As shown in FIG. 1, the real-time monitoring device for ground displacement in a tunnel 100 can be configured as a linear sensor network structure having a two-level hierarchical structure. Through this, sensing data can be transmitted very effectively when long distance wireless transmission technology in tunnel is applied.

According to the conventional one-dimensional linear sensor network structure, each sensor node has to transmit collected sensing data to neighboring sensor nodes, and relay the sensing data received from the previous sensor node to the next sensor node. This one-dimensional linear sensor network structure adds a lot of traffic to each sensor node. Especially, when sensor nodes are close to each other, sensing data transmission based on hopping between adjacent sensor nodes is very inefficient.

However, the two-level linear sensor network according to the embodiment of the present invention solves the traffic load problem caused by the relay of each sensor node pointed out as a problem of the existing one-dimensional linear sensor network. In addition, the two-level hierarchical linear sensor network can reduce the data transmission delay by reducing the number of hops during data transmission.

Hereinafter, a method for real-time monitoring of ground displacement in a tunnel according to an embodiment of the present invention will be described in detail with reference to FIG. 2 through FIG.

2 is a flowchart illustrating a method for real-time monitoring of ground displacement in a tunnel according to an embodiment of the present invention.

First, the real-time monitoring apparatus for ground displacement in a tunnel 100 generates sensing data (S210). Here, the sensing data may include at least one of a degree of warp, an angle, and a gradient.

3 is a diagram illustrating a sensing module according to an embodiment of the present invention.

As shown in FIG. 3, the sensing module 310 is configured by a combination of a plurality of unit sensor modules. At this time, a plurality of unit sensor modules are installed along the tunnel arc, and sensing data can be generated by detecting the ground displacement state in the tunnel.

The sensing module 310 may include a strain gauge, an angle measurement sensor, a tilt measurement sensor, and the like, and is connected to the sensing data collection module 320 through the first interface 315.

The sensing data collection module 320 is connected to the sensor node 400 constituting the wireless sensor network through the second interface 325 and transmits the sensing data to the sensor node 400.

Here, the sensor node 400 transmits and receives data to and from the sensing data collection module 320 through serial communication, and can wirelessly transmit and receive the received sensing data using the communication in the license-free frequency band. In addition, the sensor node 400 may support low power output and local communication for remote wireless transmission / reception.

As shown in FIG. 2, the lower sensor nodes of the real-time monitoring device 100 for ground displacement in the tunnel transmits the generated sensing data to the anchor sensor node (S220).

4 is a diagram illustrating a configuration of a sensor node according to an embodiment of the present invention.

4, the sensor node 400 includes a sensor matching unit 410, an MCU 420, a wireless transmitting / receiving matching unit 430, and a power matching unit 440.

First, the sensor matching unit 410 receives RS-232C UART serial sensing data from a plurality of unit sensor modules or a sensing module.

The MCU 420 converts the sensing data received from the plurality of unit sensor modules or the sensing module into a form capable of wireless transmission. And transmits the converted sensing data to the wireless transmission / reception matching unit 430.

When the MCU 420 receives the wireless data from the neighboring wireless communication module having the multi-hop configuration through the wireless transmission / reception matching unit 430, the MCU 420 analyzes the data to relay data to the next wireless communication module. After the data analysis is completed, data can be transmitted through the wireless transmission unit.

Next, the wireless transmission / reception matching unit 430 wirelessly transmits sensing data received from the MCU 420, determines whether to receive wireless data received from the outside, or receives wireless data from the outside.

The power matching unit 440 supplies power to the wireless communication module.

Next, in step S220, the anchor sensor node that has received the sensing data relays the sensing data received by the other anchor sensor node in step S230.

In step S230, the anchor sensor node receiving the sensing data from the previous anchor sensor node receives the sensing data from the plurality of lower sensor nodes. Then, relayed sensing data and sensing data received from a plurality of lower sensor nodes are relayed to the next anchor sensor node.

At this time, if the anchor sensor node receiving the sensing data in step S220 is the last anchor sensor node included in the in-tunnel ground displacement real time monitoring apparatus 100, the last anchor sensor node relays the sensing data to the gateway.

Here, the gateway is located in a place where it can be connected to the internal or external Internet communication network of the tunnel. In order to transmit the sensing data received from the plurality of sensor nodes to the ground displacement management platform connected to the external internet, . At this time, the gateway can be connected in various ways according to the communication network of the external Internet, such as a wired LAN, a Wi-Fi, and a mobile communication network.

Finally, the real-time monitoring device 100 for ground displacement in the tunnel transmits the final sensing data to the external management center (S240).

Here, the final sensing data refers to sensing data finally received by the gateway, and includes sensing data received from all the lower sensor nodes and the anchor sensor nodes included in the real-time monitoring device 100 for the ground in-ground displacement.

Hereinafter, the arrangement of the components of the apparatus 100 for real-time monitoring of ground displacement in a tunnel according to an embodiment of the present invention will be described in more detail with reference to FIG. 5 and FIG.

5 is a diagram illustrating a configuration of a plurality of unit sensor modules and a sensor node according to an embodiment of the present invention.

5, a plurality of unit sensor modules 510a, 510b, 510 (n-2), 510 (n-1), 510n included in the real time monitoring device 100 for ground displacement in a tunnel are connected in a multi- . The unit sensor modules 510a, 510b and 510 (n-2) and 510 (n-1) and 510n may be connected to a strain gauge, an angle measuring sensor or a tilt measuring sensor to measure the ground displacement.

Then, the sensing data collection module 520 uses the unique identifier of each unit sensor module 510a, 510b, 510 (n-2), 510 (n-1), 510n to determine the ground displacement sensing data Collect. That is, the sensing data collection module 520 collects sensing data of all unit sensor modules 510a, 510b, 510 (n-2), 510 (n-1) do.

FIG. 6 is a view for explaining placement positions of sensor nodes in a tunnel according to an exemplary embodiment of the present invention. Referring to FIG.

As shown in FIG. 6, the real time monitoring device 100 for monitoring ground displacement in a tunnel includes a plurality of lower sensor nodes 610a, 610b, 610n, 630a, 630b, 630n, 650a, 650b, 650n, 670a, 670b, 670n, The sensor nodes 620, 640, 660, and 680 may be disposed to monitor the ground displacement in the tunnel and to collect sensing data.

When the sensor nodes are configured as a two-level hierarchical linear sensor network from the lower sensor node 610a located at the innermost side of the tunnel to the gateway 690 located outside the tunnel for transmission of sensing data, the anchor sensor nodes 620, 640, 660, and 680 transmit sensing data through a multi-hop communication scheme.

At this time, the lower sensor nodes are arranged to be positioned on the opposite surface side with respect to the anchor sensor nodes to which the sensing data is to be transmitted and the tunnel surface, so that the sensing data can be transmitted / received considering the propagation environment.

For example, when the lower sensor nodes 610a, 610b, and 610n are located on the left side when viewed from the tunnel entrance where the gateway 690 is located, the sensing data is transmitted from the lower sensor nodes 610a, 610b, The receiving anchor sensor node 620 may be positioned to the right when viewed from the tunnel entrance. In this way, the lower sensor nodes and the anchor sensor nodes transmit sensing data to the anchor sensor nodes located at the opposite sides of the tunnel.

As described above, the apparatus and method for managing a rehabilitation exercise according to the present invention are not limited to the configurations and methods of the embodiments described above, but the embodiments may be modified in various ways, All or a part of the above-described elements may be selectively combined.

100: Real-time monitoring device for ground displacement in tunnel
The sensor nodes 110a, 110b, 110n, 130a, 130b, 130n, 150a, 150b,
120, 140, 160: anchor sensor node
170: Gateway
200: External internet
250: Ground displacement management platform
310: Sensor module
315: First interface
320: Sensing data acquisition module
325: Second interface
400: sensor node
410:
420: MCU
430: wireless transmitting /
440:
510a, 510b, 510 (n-2), 510 (n-1)
520: Sensing data acquisition module
610a, 610b, 610n, 630a, 630b, 630n, 650a, 650b, 650n, 670a, 670b,
620, 640, 660, 680: anchor sensor node
690: Gateway

Claims (1)

An apparatus for real-time monitoring of ground displacement in a tunnel including a plurality of sensor nodes linearly installed in a tunnel,
A plurality of lower sensor nodes for transmitting sensed data generated by sensing a ground displacement state in a tunnel to another sensor node,
A plurality of anchor sensor nodes for relaying the sensing data received from the plurality of lower sensor nodes,
A gateway for transmitting final sensing data received from the anchor sensor node to an external management center using a network,
A real time monitoring device for a ground displacement in a tunnel.
KR1020150154663A 2015-11-04 2015-11-04 Apparatus and method for real-time monitoring of ground deformation in tunnel KR101994638B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090010552A (en) * 2007-07-23 2009-01-30 강릉대학교산학협력단 Method for routing in underwater sensor network based on hierarchical group
KR20110004176A (en) * 2009-07-07 2011-01-13 한국건설기술연구원 System for safety measure of structure using inclinometer
KR20140081726A (en) 2012-12-21 2014-07-01 식아게 Tunnel monitoring sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090010552A (en) * 2007-07-23 2009-01-30 강릉대학교산학협력단 Method for routing in underwater sensor network based on hierarchical group
KR20110004176A (en) * 2009-07-07 2011-01-13 한국건설기술연구원 System for safety measure of structure using inclinometer
KR20140081726A (en) 2012-12-21 2014-07-01 식아게 Tunnel monitoring sensor

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