KR20000060425A - Clay compaction administration system using a differential global positioning system - Google Patents

Abstract

PURPOSE: A system for managing earth hardening work using DGPS(differential GPS) is provided to prevent a bad earth-hardening working by collecting a construction management document and enhancing a construction level. CONSTITUTION: A system for managing earth hardening work includes GPS satellites(8), GPS receiver(6), base station(10), and a data conversion processor. A roller is mounted to the GPS receiver(6) which receives a position data and a height data from the GPS satellites(8). The base station(10) includes GPS receiver for receiving a position information of the base station from the GPS satellites, and transmits a position correction data to the GPS receiver. The data conversion processor is mounted to the roller, processes a received data of the roller GPS receiver, and displays the received data.

Description

Clay compaction administration system using a differential global positioning system

The present invention relates to a landfill compaction management system using GPS, and in particular, the landfill compaction using GPS for precisely and efficiently managing landfill compaction by rollers in civil engineering sites requiring precise construction. It relates to a management system.

Referring to the problems in the fillet compaction construction through a roller generally practiced as follows.

Compaction works can be said that the number of compaction of the roller determines the quality of the fill, but most of the compaction works are not actually performing the number of times specified in the specification. In addition, at present, it is not possible to confirm whether the number of compactions in the specification is correctly fulfilled through the compaction method. Therefore, a management test (field density test, flat load test, etc.) is conducted for each construction process. There is a problem that it takes a lot of people and equipment to carry out such a management test and takes a long time to obtain the test results. In addition, there is a problem that even the sampling for the number of tests is arbitrarily collected in an arbitrary area to perform a poor test through a formal test process, there is a problem that does not meet the number of tests.

In general, once a compaction construction site is determined in a civil engineering site, the maximum dry unit density is obtained by performing an indoor test on the same site soil. However, the field compaction is difficult to standardize the level of quality, and difficult to manage the part where the compaction is inconsistent since the standard compaction is performed indoors through a large-scale, large-capacity equipment.

As described above, the problems with the compaction process and quality control currently implemented in civil works,

First, in the process in which the compaction is performed, there is a problem that some overlap or omission of the compaction section occurs because the number of round trip passes of the compaction equipment is determined by subjective judgment of the roller operator. In addition, due to excessive compaction, there are problems such as fine granularity of the soil material and destruction of the ground, and there is a problem that due to poor compaction, differential settlement of the ground and weakening of bearing capacity may occur.

Second, stratification should be carried out on the foundations of important structures. Standard one-layer compaction thickness depends on the role of the structure and the fill material. Although quantifying the control of the first-floor compaction thickness, which is standard, is a very important quality control issue, it was necessary to manage the compaction due to the mixing and laying of random landfill materials. In particular, if the first floor compaction thickness is randomly set for air shortening, there is a problem in that even quality cannot be obtained.

Third, the standard specification for the sedimentation test currently being carried out at the construction site is specified in KS F2312 in Korea ("Unit weight test method of soil by sand replacement method at site" (KS F 2311 (1986 edition)). However, because the size of this test method does not reflect site-wide compaction, a large “field density test” may be performed. Considering the current civil reality, where several strides are carried out, it is very inefficient and consequent quality control because several tests must be performed for each stratification. Since many tests have to be carried out because it is difficult to have representativeness as data for a specific point in the compaction site, In addition, there is a problem that requires the introduction of a system capable of three-dimensional quality management.

Also, in actual civil works, the output produced requires huge capital and labor, and the importance of process introduction and quality control at each stage is very important. Fill compaction work is also the most basic work to support the stability of structure compared to the simplified process, and considering the cost and manpower invested, it is a large-scale work, which required more quality control and process control.

An object of the present invention is to devise in order to improve the problems in the conventional landfill compaction as described above, to install a GPS receiver on the roller corresponding to the mobile station and to fix the GPS receiver in the reference station to within the centimeter unit precision Filling using Digi-PS to grasp the roller movement and analyze the X, Y data (orbital data) and height (H) of the roller obtained from the GPS receiver to efficiently and scientifically manage the compaction work. It is to provide a compaction management system.

According to a preferred embodiment of the present invention for achieving the above object, a GPS receiver, a roller GPS receiver which is mounted on the roller to receive the position data and height data of the roller from the GPS satellites, and the GPS A data conversion processing apparatus including a GPS receiver for receiving location information of a base station from satellites and transmitting position correction data to a roller GPS receiver, and a data conversion processing apparatus mounted on the roller to process and display data received from the roller GPS receiver. There is provided a fill compaction management system using Digi-P.

The landfill compaction management system using the digital PS according to the present invention collects accurate data through expensive and precise GPS receiver and analyzes the collected data accurately and effectively through software. The software analyzes the data collected through the GS in real time or post-processing at the center to accurately display the position of the rollers, the trajectory, the speed, the number of compactions, and the thickness of the layer for the compaction zone. Since various types of information of the rollers can be expressed through various colors on the display device, a method in which the field manager can easily grasp the work situation and instruct the field to supplement the problem is used in the present invention.

1 is a schematic configuration diagram of a fill compaction management system according to the present invention

2 is a block diagram of a data conversion processing apparatus in a filling compaction management system using a digital PS according to the present invention;

3 is an operation flow chart in a fill compaction management system using a digital PS according to the present invention

4 is a view showing a filling compaction scene on the display means through the data conversion processing apparatus of FIG.

FIG. 5 is a view showing a roller movement trajectory selected by the data conversion processing apparatus of FIG.

FIG. 6 is a view showing the compaction count view selected by the data conversion processing apparatus of FIG.

7 is a view in which the floor management view selected by the data conversion processing apparatus of FIG. 2 is displayed on the display means.

<Explanation of symbols for the main parts of the drawings>

2: roller 6: gPS receiver

8: GPS satellite 10: base station

12: base station GPS receiver 20: data conversion processing device

22: GPS data receiving unit 24: central processing unit

23: function selection unit 24: program storage unit

25: screen processing unit 27: display means

28: data storage

The above and other objects and features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings it will be described in detail the configuration and operation relationship for the filling compaction management system using the digital PS proposed in the present invention.

First, in order to explain the digital PS technology applied to the present invention, first, the GPS technology will be described.

Global Positioning System (GPS) is a new satellite navigation system developed by the US Department of Defense for military use. It uses 24 GPS satellites, and the Precise Positioning Servie (PPS) using military P code is 16m, Standard Positioning Service (SPS) using C / A codes allowed for civilians has a positioning accuracy of 100m. However, this degree of accuracy does not meet the positional accuracy required for various applications. Digi-PS has emerged as a way to obtain more accurate location information.

Differential GPS calculates the component of error in the pseudorange measurements from information currently sent by satellites from a reference station whose location is known, and informs the surrounding user of the error component for improved positioning. It is a navigation system. The digital PS system compares its own position pre-measured at the reference station with the position calculated by receiving the GS signal, calculates the position error correction message by the GPS signal at that moment, and transmits the correction information. The user's location is calculated very accurately by transmitting it to the receiver in the RCM (Radio Technical Commission for Maritime Service) format.

This process includes several error factors included in the GPS signal, namely, the GPS satellite orbit error, the GPS satellite clock error, the ionospheric delay error and tropospheric delay error that occur when the GPS signal passes through the ionosphere and troposphere, multipath error, and receiver noise error. The error except the multipath error and receiver noise error is considered as common error between the reference station and the user.

In other words, the differential GPS (Differential GPS) is a technology that advances the GPS to the next step to the GPS positioning correction technology to minimize the error of the GPS. The present invention is characterized by analyzing the data collected through the GPS receiver using the GPS technology.

1 is a schematic configuration diagram of a fill compaction management system using a digital PS according to an embodiment of the present invention, as shown in this, the roller (2) is in close contact with the ground (4) for the compaction work have.

Reference numeral 6 is a GPS receiver mounted on the roller 2 to receive various data signals from the GPS satellites 8, that is, the position data X and Y signals of the roller and the height value H using the elevation. . These values become important process data of the data conversion processing apparatus described later.

Reference numeral 10 is a base station to receive the position data signal from the GPS satellites 8 through the GPS receiver 12, and wireless communication is possible through the roller 2 and the transceiver (not shown). From the reference station GPS receiver 12, the roller 2 receives the corrected position data to obtain more accurate position data.

The roller 2 is provided with a data conversion processing apparatus (see FIG. 2) capable of converting and processing data received from the GPS receiver 6, and a wireless communication unit capable of wirelessly transmitting the converted data (Fig. 2). 2).

The data conversion processing apparatus may be mounted in the roller 2 or installed in a separate center to receive compaction management by receiving data obtained through the GPS receiver 6 of the roller 2 from the outside. have.

FIG. 2 is a block diagram of a data conversion processing apparatus applied to the present invention. As shown in FIG. 2, the data conversion processing apparatus 20 includes data received from the GPS receiver 6 installed in the roller 2, that is, the rollers. A program storage unit incorporating a GS data receiving unit 22 for receiving X, Y data and height data, a central processing unit 24 for processing the received data, and a program for processing data received from the GS receiving data ( 26, a data storage unit 28 for storing data processed through the program of the program storage unit 26 according to the control signal of the central processing unit 24, and a desired screen on the display means 27. The function selector 23 to display the data, and the data stored in the data storage unit 28 according to the selection signal of the function selector 23, and are displayed on the display means 27 via the screen processor 25. That party Display the fee.

Reference numeral 29 denotes a wireless communication unit, which can transmit data with another wireless modem under the control of the central processing unit 24.

3 is a flowchart illustrating the operation of the fill compaction management system using the digital PS according to the present invention. As shown in the drawing, first, in step S10, various types of data of the GPS receiver are received. Thereafter, the central processing unit 24 reads the program of the program storage unit 26 and displays the initial screen, that is, the roller movement state, through the display means 27 in step S12. In step S14, it is determined whether the compaction count view is selected. If the selection count view (displayed in the pull down menu format) is selected through the function selection unit 23, the central processing unit 24 reads the data of the data storage unit 28 in step S16. The data is processed through the screen processing unit 25 according to the number of times, and the result of the processing is displayed as a movement trajectory of the roller 2. At this time, the display of the movement trajectory is displayed by color, and the number of movements is simultaneously displayed on the screen according to each color. Thereafter, in step S18, the central processing unit 24 determines whether the number of compactions is six or more. If the number of compactions is 6 or more times, the process is terminated. If the number of compactions is less than 6, the rework is displayed in a format displayed at the bottom of the screen, for example.

On the other hand, in step S22, it is determined whether the view of the roller movement trajectory has been selected from the function selection unit 23, and the display proceeds to the screen displaying the roller movement trajectory or the roller movement state in step S24.

On the other hand, in step S26, it is determined whether the layer (thickness) management view is selected from the function selection unit 23. If the floor management view is selected, step S28 processes the floor (thickness) data to display the movement trajectory according to the floor (thickness) in step S30. In step S32, it is determined whether the movement trajectory according to the layer thickness is constant, and if the movement trajectory is not constant, rework is instructed.

FIG. 4 is a view showing a filling compaction field on a display unit through the data conversion processing apparatus of FIG. 2, and as shown in FIG. 4, various menu bars are displayed, namely, work, file, window view, color change. A menu bar of help and the like is shown at the top of the screen, and a working environment, i.e., a drawing of a filling site, is shown on the initial screen. In the work site shown, the position of the current roller 2 is shown. The position of the roller 2 is obtained by processing the data from the GPS receiver 6 mounted on the roller 2 through the GPS data receiver 22, and the position of the roller 2 is displayed in real time.

FIG. 5 is a view illustrating a roller movement trajectory view in the data conversion processing system of FIG. 2. As shown in FIG. 2, a user selects a roller movement trajectory viewing item from a menu bar through the function selection unit 23. In other words, when clicked, such a screen is displayed.

6 is a view showing the compaction count screen in the data conversion processing system of FIG. 2, as shown in FIG. 2, in which the user selects the compaction count view item from the menu bar through the function selection unit 23. When clicked, such a screen is displayed. Different colors can be displayed depending on the position of the movement trajectory on the screen. This is to display the roller compaction number specified by color in a different color. In general, more than 6 compaction operations are required, so if the number of roller compactions is less than 6, mark them with a specific color. At this time, whenever the user moves the cursor of the mouse, the number of compactions of the corresponding part may be displayed. Re-order is required for less than six compaction areas. The rework instruction may be automatically instructed through the wireless communication unit 29 under the control of the central processing unit 24 or may be instructed manually.

FIG. 7 is a view illustrating a layer (thickness) management view in the data conversion processing system of FIG. 2. As shown in FIG. 2, a user manages a layer (thickness) in a menu bar through the function selection unit 23. Selecting, or clicking, a view item displays a screen like this. On the screen, the layer (thickness) may be displayed in a different color. For example, when the layer (thickness) is constant, the color is displayed, and areas where the layer is not uniform are not displayed. If there are areas with uneven floors, order rework. The rework instruction may be automatically instructed through the wireless communication unit 29 under the control of the central processing unit 24 or may be instructed manually.

As described above, the landfill compaction management system using GPS proposed in the present invention proposes a track analysis and compaction management method using track data and level data of compaction vehicle using a GPS receiver.

In addition, it is possible to analyze the running speed of the roller running through the data acquisition by time zone. Analyze and manage the operating speed of equipment, one of the factors that affect the quality of fill compaction.

As described above, according to the landfill compaction management system using the DGPS according to the present invention, the on-site management level for the compaction is strict, there is an effect that can prevent the failure of compaction construction. In addition, the construction management data can be easily collected and the construction level can be further improved.

Therefore, the fill management system according to the present invention has the effect of reducing time, manpower, cost.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the scope of the claims You will have to look.

Claims (6)

GPS satellites, A roller GPS receiver mounted on the roller and receiving the position data and the height data of the roller from the GPS satellites; A base station including a GPS receiver for receiving location information of the base station from the GPS satellites, and transmitting position correction data to a roller GPS receiver; And a data conversion processing device mounted on the roller and configured to process and display data received from the roller GPS receiver. The method of claim 1, The data conversion processing apparatus includes a GPS data receiver for receiving position data and height data from the GPS receiver; A function selection unit for selecting various functions, A program storage unit having a program for processing and analyzing various data, A central processing unit which processes the signal of the GPS data receiving unit through a program of a program storage unit according to the signal of the function selection unit; A screen processing unit which displays a corresponding screen by screen processing according to the control signal of the central processing unit; Display means for displaying a signal of the screen processor; Filling management system using a digital PS, characterized in that configured as a data storage for storing the various data received according to the control signal of the central processing unit. The method of claim 2, According to the control signal of the central processing unit, the compaction management system using a digital PS comprising a wireless communication unit for transmitting a processing result to a separate management center. The method of claim 2, The function selection unit fill compaction management system using a digital PS, characterized in that to select the number of compaction view, roller movement trajectory view, or floor management view. The method of claim 4, wherein And the central processing unit controls to transmit an instruction signal for reworking when the number of compactions is less than a predetermined number of times according to the selection count view selection signal of the function selection unit. The method of claim 2, The central processing unit determines whether the roller movement trajectory is constant according to the floor management view selection signal of the function selection unit, and if the roller movement trajectory is not constant, controls to transmit an instruction signal for rework. Fill Compact Management System using