KR20200082400A - Retaining wall and stone management system using LoRa network system. - Google Patents

Abstract

The present invention relates to a retaining wall and stonework management system using a LoRa network system. An automatic measurement management system for retaining wall or stonework collapse risk sign monitoring and maintenance includes: a plurality of measurement units (100) for vibration and movement detection installed in a retaining wall or stonework; and a central server (200) storing and managing data calculated from the measurement units. The measurement unit collects the amount of deformation caused by vibration and movement from the origin and transmits the collected amount of deformation to the central server (200). Each of the measurement units (100) has a unique ID and includes: a GPS sensor (110) calculating a coordinate value on the current position with respect to the origin on x-axis, y-axis and, z-axis coordinates and transmitting the value to a data transmission/reception unit; and the data transmission/reception unit (120) transmitting the unique ID and the coordinate value received through the GPS sensor to the central server. According to the present invention, the deformation amount data can be collected precisely and the collected data is transmitted to the central server by means of the LoRa network system and without an intermediate node terminal (repeater). As a result, the data can be transmitted at an increased rate and retaining wall and stonework collapse risk signs can be quickly caught in a low-power and low-cost manner.

Description

Retaining wall and stone management system using LoRa network system.}

The present invention relates to a retaining wall and a stone wall management system using a LoRa network system, and more specifically, to collect deformation amounts caused by vibrations and movements through a measuring unit, wherein the measuring unit is connected to a central server with a LoRa network system to retain the wall. Or, it could be related to the maintenance of stone and the monitoring of signs of collapse risk.

In recent years, a cellular communication system or a monitoring system of a retaining wall and a stone masonry utilizing low-power long-distance communication technology (LPWA) has been used to urgently perform reinforcement work when the signs of the collapse of the retaining wall and the stone masonry are caught.

In a cellular communication system, a geographic area is divided into a number of cells, each of which is serviced by a base station and the base stations are interconnected by a fixed network capable of data communication between base stations.

The Internet of Things service provided by the above-described cellular modems and modules has high entry barriers due to price and solution licensing problems, and high-priced monthly usage fees are incurred for each device, and thus the service is expanding slowly.

In addition, the above-described cellular module is optimized for the purpose of voice or multimedia transmission of mobile communication, so power consumption is large and a constant power supply is required.

In order to overcome the disadvantages of the cellular modems and modules, low power wide-area (LPWA) access devices have been actively used in recent years.

The low-power long-distance communication technology (LPWA) is characterized by establishing a unique Internet of Things network using unlicensed band frequency, and the low-power long-distance communication technology has been developed and utilized SigFox and LoRa technology.

The attached FIG. 1 shows a comparison chart for each LPWA method. Referring to FIG. 1, it can be seen that Lora communication technology is faster than the transmission speed of SigFox communication technology and power consumption is small, so that the battery life is longer.

In more detail, in the Lora communication technology, data collected through a terminal is generally transmitted to a central server via a gateway.

However, in the conventional Lora communication technology, not only is the price of an intermediate node terminal (repeater) performing the gateway function expensive, there is a problem in that data transmission time is delayed when the amount of data entering through the gateway temporarily increases. do.

The present invention is to solve the above-mentioned problems, the measurement unit of the present invention utilizes LoRa network system to calculate the amount of deformation caused by vibration and movement from the origin in the GPS coordinates and transmits it to the central server, in particular, an intermediate node terminal By transmitting data directly to the central server without going through the (repeater), it is possible to improve the data transmission speed of the coordinate values, maintain the retaining walls and stone shafts, monitor the risk of collapse, as well as slope. The purpose is to provide a retaining wall and stone management system using LoRa network system that can be installed on a slope.

However, the object of the present invention is not limited to the above-mentioned object, another object not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention is an automatic measurement management system used to monitor the maintenance and collapse risk signs of a retaining wall or stone shaft, a plurality of measuring units installed on the retaining wall or stone shaft to detect vibration and movement ( 100); and a central server (200) for storing and managing data calculated from the measuring unit; the measuring unit collects the amount of deformation caused by vibration and movement from the origin, and collects the amount of deformation from the central server (200);

In addition, each measurement unit 100 has a unique ID; gps sensor that calculates the coordinate values for the current position for the origin on the x-axis, y-axis, and z-axis coordinates and transmits them to the data transmission/reception unit It includes; (110); and a data transmitting and receiving unit 120 for transmitting the coordinate value received through the gps sensor to the central server with a unique id.

Then, the data transmitting and receiving unit 120 transmits the coordinate values of the gps sensor 110 to the central server 200 every predetermined time t, but the coordinate values are (x(n,t), y( n,t), z(n,t)) where n = 1, 2, 3, .., p-1, p, p+1. .., U are subscripts indicating the number of gps sensors, and t = 1, 2, 3, .., q-1, q, q+1, .., V as subscripts indicating the time points measured by each gps sensor In this case, the transmission uses LORA wireless network communication.

In addition, a part of the measurement unit 100 includes a calculation unit 130, wherein the calculation unit 130 uses the coordinate values to immediately coordinate values [x(p,q-1), y(p, q-1), z(p,q-1)] and the current coordinate values [x(p,q), y(p,q), z(p,q)] to calculate the amount of deformation, self-deformation When the amount occurs, it is transmitted to the central server through the data transmission/reception unit.

In addition, the self-deformation amount of the previous point is represented by a coordinate value, but the coordinate values of the self-deformation amount of the previous point are [Dx(p,q-1), Dy(p,q-1), Dz(p,q-1) )], where Dx(p,q-1)= x(p,q)- x(p,q-1), Dy(p,q-1)= y(p,q)- y(p, q-1), Dz(p,q-1)= z(p,q)- z(p,q-1).

In addition, some of the measuring units include a calculating unit 130, but the calculating unit 130 uses the coordinate values to calculate the coordinate values of the previous k point [x(p,qk), y(p,qk), z( p,qk)] and the current coordinate values [x(p,q), y(p,q), z(p,q)], and calculates the amount of deformation. Send to the central server.

In the above, the self-deformation amount of the k-transition point is represented by a coordinate value, but the coordinate value of the k-transition-point self-deformation amount is [Dx(p,qk), Dy(p,qk), Dz(p,qk)], At this time, Dx(p,qk)= x(p,q)- x(p,qk), Dy(p,qk)= y(p,q)- y(p,qk), Dz(p,qk)= It is characterized by being z(p,q)-z(p,qk).

In addition, the measurement unit having the calculation unit 130 receives coordinate values of the current time point obtained from a nearby measurement unit gps sensor, and the calculation unit 130 receives the current point coordinate value [x( p-1,q), y(p-1,q), z(p-1,q)] and the coordinate values of the current time point obtained from the measurement part [x(p,q), y(p, q), z(p,q)], and calculates the relative amount of deformation at the current point in time, and when a relative amount of deformation occurs, transmits it to the central server through the data transmitting and receiving unit.

In addition, the relative deformation amount of the current point is represented by coordinate values, but the coordinate values of the relative deformation amount of the current point are [Ex(p-1,q), Ey(p-1,q), Ez(p-1,q). )], where Ex(p-1,q)= x(p,q)- x(p-1,q), Ey(p-1,q)= y(p,q)- y(p-) 1,q), Ez(p-1,q)= z(p,q)- z(p-1,q).

In addition, the measurement unit having the calculation unit 130 receives the coordinate value of the k transfer point obtained from the nearby measurement unit gps sensor, and the calculation unit 130 receives the k transfer point coordinate value obtained from the nearby measurement unit [x (p-1,qk), y(p-1,qk), z(p-1,qk)] and the coordinate values of the current time point obtained from the measurement section [x(p,q), y(p ,q), z(p,q)], and calculates the relative deformation amount of the previous point k, and when the relative deformation amount occurs, transmits it to the central server through the data transmitting and receiving unit.

In the above, the relative deformation amount of the k-transition point is represented by a coordinate value, but the coordinate values of the relative transformation amount of the k-transition point are [Ex(p-1,qk), Ey(p-1,qk), Ez(p-1) ,qk)], where Ex(p-1,qk)= x(p,q)- x(p-1,qk), Ey(p-1,qk)= y(p,q)- y( p-1,qk), Ez(p-1,qk) = z(p,q)-z(p-1,qk).

In addition, the relative deformation amount of the k-transition point is represented by a coordinate value, but the coordinate values of the relative transformation amount of the k-transition point are [Ex(pm,qk), Ey(pm,qk), Ez(pm,qk)], At this time, Ex(pm,qk)= x(p,q)- x(pm,qk), Ey(pm,qk)= y(p,q)- y(pm,qk), Ez(pm,qk)= It is characterized by z(p,q)-z(pm,qk).

Features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, the terms or words used in the specification and claims should not be interpreted in a conventional and lexical sense, and the inventor may appropriately define the concept of terms in order to best describe his or her invention. Based on the principle that it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

As described above, according to the present invention, it is possible to precisely collect deformation data generated due to vibration and movement from the origin in GPS coordinates, and transmit the collected data to the central server by utilizing the Lora network system, especially in the middle node The speed of data transmission can be improved by not going through a terminal (repeater), and it is possible to quickly capture signs of danger of collapse on retaining walls and stone walls and slopes and slopes with low cost and low power.

Figure 1 shows a comparison chart by LPWA method.
Figure 2 shows a schematic configuration according to an embodiment of the present invention.
Figure 3 is a graph of the coordinate values by time transmitted from the gps sensor of the present invention.
4 shows a schematic configuration according to the second embodiment of the present invention.
5 is a detailed chart of time coordinate values transmitted from the q-th gps sensor of the present invention.
6 shows a schematic configuration according to an embodiment of the present invention.
7 is a chart of coordinate values transmitted from a plurality of gps sensors at the present time (q) of the present invention.
FIG. 8 is a chart of coordinate values transmitted from a plurality of gps sensors when k is the starting point of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but are merely illustrative of the components presented in the claims of the present invention, and are included in the technical idea throughout the specification of the present invention and constitute the claims. Embodiments that include a substitutable component as an equivalent in the elements can be included in the scope of the present invention.

Figure 2 shows a schematic configuration according to an embodiment of the present invention.

Referring to Figure 2, the present invention is an automatic measurement management system used to monitor the maintenance and collapse risk signs of the retaining wall or stone shaft, installed on the retaining wall or stone shaft, a plurality of measuring units for detecting vibration and movement (100 ); and a central server 200 for storing and managing data calculated from the measurement unit.

In addition, the present invention can be installed and used on slopes and slopes as well as retaining walls.

The measuring unit collects the amount of deformation generated due to vibration and movement from the origin, and transmits the collected amount of deformation to the central server (200).

Also, in the above, each measurement unit 100 has a unique ID; gps for calculating coordinate values for a current position with respect to an origin point on x-axis, y-axis, and z-axis coordinates, and transmitting the coordinate values to the data transmission/reception unit It includes; a sensor 110; and a data transmitting and receiving unit 120 for transmitting the coordinate value received through the gps sensor to the central server with a unique id.

In this case, the gps sensor may utilize a load cell or a structure inclinometer and a wire-shaped reference plane extension system.

The attached FIG. 3 is a chart of time coordinate values transmitted from the gps sensor of the present invention.

The data transmitting and receiving unit 120 transmits the coordinate values of the gps sensor 110 to the central server 200 every predetermined time t, but the coordinate values are (x(n,t), y(n) ,t), z(n,t)).

Also, at this time, the transmission uses LORA wireless network communication.

3(a) is a graph of the number and time of the gps sensor. Referring to FIG. 3(a), n=1, 2, 3, .., p-1, p, p +1. .., U is a subscript indicating the number of gps sensors, and t = 1, 2, 3, .., q-1, q, q+1, .., V are subscripts indicating the time point measured by each gps sensor You can see that

In the above, the total number of gps sensors is P, and the total number of time points measured by each gps sensor is Q.

FIG. 3(b) is a graph showing the hourly gps coordinates of the p-th gps sensor. Referring to FIG. 3(b), the meaning of x(p,1) is that the p-th gps sensor is the first time point. Means the x-coordinate value measured at, but y(p,1) means the y-coordinate value measured by the p-th gps sensor at the first time point, and z(p,1) means the p-th gps sensor. Is the z-coordinate value measured at the first time point.

In addition, the meaning of x(1,q) means the x coordinate value measured by the first gps sensor at the qth time point, but the meaning of y(1,q) is y measured by the first gps sensor at the qth time point. A coordinate value, and z(1,q) means a z-coordinate value measured by the first gps sensor at the q-th point.

The attached FIG. 4 shows a schematic configuration according to the second embodiment of the present invention.

Referring to FIG. 4, some of the measurement units of the measurement unit 100 include an operation unit 130.

When the second embodiment of the present invention is described in more detail with reference to FIGS. 4 and 3 (b), the arithmetic unit 130 uses coordinate values [x(p,q) -1), y(p,q-1), z(p,q-1)] and current coordinate values [x(p,q), y(p,q), z(p,q)] The amount of deformation is calculated, and when a self-deformation amount occurs, it is transmitted to the central server through the data transmission/reception unit.

The self-deformation amount of the previous point is represented by a coordinate value, but the coordinate values of the self-deformation amount of the previous point are [Dx(p,q-1), Dy(p,q-1), Dz(p,q-1) ], where Dx(p,q-1)= x(p,q)- x(p,q-1), Dy(p,q-1)= y(p,q)- y(p,q -1), Dz(p,q-1)= z(p,q)- z(p,q-1).

The attached FIG. 5 is a detailed chart of time coordinate values transmitted from the qth gps sensor of the present invention.

4 and 5, some of the measurement units among the measurement units include an operation unit 130, but the operation unit 130 uses the coordinate values to calculate the coordinate values [x(p,qk) of k transfer points, Calculate the deformation amount from y(p,qk), z(p,qk)] and the current coordinate values [x(p,q), y(p,q), z(p,q)], self-deformation When the amount occurs, it is transmitted to the central server through the data transmission/reception unit.

The self-deformation amount of the k-transition point is represented by a coordinate value, but the coordinate value of the self-transformation amount of the k-transition point is [Dx(p,qk), Dy(p,qk), Dz(p,qk)]. Dx(p,qk)= x(p,q)- x(p,qk), Dy(p,qk)= y(p,q)- y(p,qk), Dz(p,qk)= z (p,q)-z(p,qk).

Figure 6 shows a schematic configuration according to the third embodiment of the present invention.

Referring to FIG. 6, a third embodiment of the present invention, the measuring unit having the calculating unit 130 receives coordinate values of a current time point obtained from a nearby measuring unit gps sensor, and the calculating unit 130 is located near the The coordinates of the current time point obtained from the measurement part of [x(p-1,q), y(p-1,q), z(p-1,q)] and the current time point obtained from the measurement part Calculate the relative deformation amount at the current time from the coordinate values [x(p,q), y(p,q), z(p,q)], and when the relative deformation amount occurs, send it to the central server through the data transmission/reception unit. It is characterized by being able to transmit.

At this time, in the above, the relative deformation amount of the current point is represented by coordinate values, but the coordinate values of the relative deformation amount of the current point are [Ex(p-1,q), Ey(p-1,q), Ez(p-1) ,q)].

In addition, in the third embodiment of the present invention shown in FIG. 6, the measuring unit having the calculating unit 130 receives coordinate values of k transfer points obtained from a nearby measuring unit gps sensor, and the calculating unit 130 is located in the vicinity The coordinate values of the previous k point obtained from the measurement section of [x(p-1,qk), y(p-1,qk), z(p-1,qk)] and the current time point obtained from the measurement section Calculate the relative deformation amount of the previous k point at the coordinate values [x(p,q), y(p,q), z(p,q)], and when the relative deformation amount occurs, the central server through the data transmitting and receiving unit It is characterized by being able to transmit.

At this time, in the above, the relative deformation amount of the k-transition point is represented as a coordinate value, but the coordinate values of the relative transformation amount of the k-transition point are [Ex(p-1,qk), Ey(p-1,qk), Ez(p- 1,qk)].

7 is a diagram of coordinate values transmitted from a plurality of gps sensors at the present time (q) of the present invention.

Referring to FIG. 7, in the third embodiment of the present invention, the process of calculating the coordinate value of the relative deformation amount at the current time point q is Ex(p-1,q)= x(p,q)- x(p- 1,q), Ey(p-1,q)= y(p,q)- y(p-1,q), Ez(p-1,q)= z(p,q)- z(p- 1,q).

8 is a diagram of coordinate values transmitted from a plurality of gps sensors when k is a previous point of time of the present invention.

Referring to FIGS. 7 and 8, the process of calculating the relative strain amount of the k transfer point in the third embodiment will be described in detail. The relative strain amount of the k transfer point is Ex(p-1,qk)= x(p,q )- x(p-1,qk), Ey(p-1,qk)= y(p,q)- y(p-1,qk), Ez(p-1,qk)= z(p,q )-z(p-1,qk).

In addition, the relative deformation amount of the k transfer point in the third embodiment is Ex(pm,qk)= x(p,q)- x(pm,qk), Ey(pm,qk)= y(p,q)- y (pm,qk), Ez(pm,qk)= z(p,q)-z(pm,qk).

In more detail, the relative deformation amount between the gps sensor located at the p-th position and the gps sensor located at the p-1th position is more likely to be smaller than the amount of relative deformation between the gps sensor located at the p-th position and the gps sensor located at the p-m position.

In addition, the relative amount of deformation between the gps sensor located at the p-th position at the current time (q) and the gps sensor at the p-th position at the time q-1 is when the gps sensor at the p-th position and the time qk at the current time point (q). It is likely to be less than the amount of relative deformation between the gps sensors located at the p-th position

Therefore, in the present invention, when measuring the relative deformation amount, the amount of deformation data transmitted to the central server by measuring the relative deformation amount by increasing the deviation of time or selecting a distance between two gps sensors It is characterized in that the size and the data transmission speed can be adjusted.

Although the present invention has been described in detail through specific embodiments, the present invention is specifically for describing the present invention, and the present invention is not limited to this, and by a person skilled in the art within the technical spirit of the present invention. It is clear that the modification and improvement are possible.

All simple modifications or changes of the present invention belong to the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

100 measuring unit
110 gps sensor
120 Data Transceiver
130 operation unit
200 central server

Claims (8)

In the automatic measurement management system used to maintain the retaining wall or stone and monitor the risk of collapse,
A plurality of measuring units 100 installed on a retaining wall or a stone shaft to detect vibration and movement; and
Including; central server 200 for storing and managing the data calculated from the measuring unit;
The measuring unit collects the amount of deformation caused by vibration and movement from the origin,
Retaining wall and stone management system using LoRa network system, characterized in that the transmission of the collected deformation amount to the central server (200). The method of claim 1
Each measurement unit 100 has a unique ID;
a gps sensor 110 that calculates a coordinate value for a current position with respect to an origin point on the x-axis, y-axis, and z-axis coordinates and transmits the coordinate value to the data transmitting and receiving unit; and
Retaining wall and stone wall management system using a LoRa network system comprising a; data transmitting and receiving unit 120 for transmitting the coordinate values received through the gps sensor to the central server with a unique id. According to claim 2,
The data transmitting and receiving unit 120
Coordinate values of the gps sensor 110 are transmitted to the central server 200 every predetermined time (t),
The coordinate values are (x(n,t), y(n,t), z(n,t))
Where n = 1, 2, 3, .., p-1, p, p+1. .., U are subscripts indicating the number of gps sensors, and t = 1, 2, 3, .., q-1, q, q+1, .., V as subscripts indicating the time points measured by each gps sensor Become
At this time, the transmission is a retaining wall and stone management system using a LoRa network system, characterized in that using the LORA wireless network communication. The method of claim 3
Part of the measurement unit 100 includes a measurement unit 130,
The arithmetic unit 130 uses the coordinate values to calculate the coordinate values [x(p,q-1), y(p,q-1), z(p,q-1)] and the current coordinate values of the immediately preceding point. Calculate the amount of deformation from [x(p,q), y(p,q), z(p,q)], and if the amount of self-deformation occurs
A retaining wall and stone building management system using a LoRa network system, characterized in that it is transmitted to the central server through the data transmitting and receiving unit. The method of claim 4
The amount of self-deformation at the previous point is represented by coordinate values
The coordinate values of the self-deformation amount at the previous point are [Dx(p,q-1), Dy(p,q-1), Dz(p,q-1)],
At this time, Dx(p,q-1)= x(p,q)- x(p,q-1), Dy(p,q-1)= y(p,q)- y(p,q-1) , Dz(p,q-1)= z(p,q)- z(p,q-1). Retaining wall and stone management system using LoRa network system. The method of claim 3
Some of the measurement units of the measurement unit includes a calculation unit 130,
The arithmetic unit 130, through the coordinate values, the coordinate values [x(p,qk), y(p,qk), z(p,qk)] of the previous point k and the current coordinate values [x(p,q ), y(p,q), z(p,q)] to calculate the amount of deformation.
A retaining wall and stone building management system using a LoRa network system, characterized in that it is transmitted to the central server through the data transmitting and receiving unit. The method of claim 6
The amount of self-deformation at the previous point of k is represented by coordinate values.
The coordinate values of the amount of self-deformation at the previous k point are [Dx(p,qk), Dy(p,qk), Dz(p,qk)],
At this time, Dx(p,qk)= x(p,q)- x(p,qk), Dy(p,qk)= y(p,q)- y(p,qk), Dz(p,qk)= Retaining wall and stone management system using LoRa network system, characterized in that z(p,q)-z(p,qk). The method of claim 3
The measuring unit having the calculating unit 130 receives coordinate values of the current time point obtained from a nearby measuring unit gps sensor,
The arithmetic unit 130 and its current coordinate values [x(p-1,q), y(p-1,q), z(p-1,q)] obtained from the nearby measurement unit and The relative deformation amount of the current time point is calculated from the coordinate values [x(p,q), y(p,q), z(p,q)] of the current time point obtained by the measuring unit, and when the relative deformation amount occurs, the above A retaining wall and stone wall management system using a LoRa network system, characterized in that it is transmitted to the central server through a data transmission/reception unit.

Images