Data Collection

Data Collection

Instruction Manual

Aktio Corporation

Engineering Division

Contents

1. Data Collection1-1Menu Window1-2Data Collection Main Window1-3Graph Window1-4Sediment Volume and Dry Sand Volume Window1-5Trend Graph Window1-6Meter Window1-7Ring Window1-8Ring Report Monitor Window1-9Printing of Ring Report and Daily Report1-10Setting Window1-11Data Storage1-12Other functions1-13List of Calculation Equations

1.Data Collection

1-1Menu Window

Outline

The menu window is always located at the right side of the screen and it cannot be moved or changed in size. Clicking on the button, however, will show the entire system.

Functions

Displays current ring number

Displays dates

Displays time

Displays excavation status

Displays alarm status

Inputs of set values

Digital/analog input/output

Window

Menu window

DescriptionData collection menu bar

Shows the ring number.

Displays excavation status

Shows the current status of excavation.

"During excavation"The machine is moving.

"Turned off"Excavation is suspended.

"Standing by"The ring has not been fully pushed and the excavation work is temporarily suspended.

1-2 Data Collection Main Window Outline

The system is designed to maintain excavation data, put them into the slip system, analyze the stored data and make graphs of them.

The majority of operations are conducted by inputting with the mouse and numeric keypad.

The system allows easy operation as the majority of the operations are doneby inputting values with the mouse and numeric keypad and progresses interactively.

Features

Various signals from the shield machine and the fluid transfer equipment are displayed in real-time.

Various statistical processing are carried out based on the recorded data and the results are graphically shown.

Clicking the left button of the mouse on each meter opens a window for change of meter items and setting of upper and lower limits.

When the current value is between the upper and lower limit, it is shown in green. When it exceeds the upper or lower limit, it is shown in red. This setting is not related to the excavation control of the system.

Window

Data collection main window

1-3 Graph Window Features

Various signals from the shield machine and the fluid transfer equipment are displayed uin real-time.

Various statistical processing are carried out based on the recorded data and the results are graphically shown per stroke.

Clicking on the left button of the mouse on each graph opens a window for change of graph items.

Signals of the past rings are read and graphically shown.

Two items may be chosen per window, which is convenient when the data of the two items have to be compared.

Past data are displayed in the window.

Window

Graphical presentations

1-4 Sediment Volume and Dry Sand Volume Window Features

Various statistical processing are carried out based on the recorded data and the results are graphically shown in chronological order.

Signals of the past rings are read and graphically shown.

Upper and lower limit values on each window may be set and changed by operating the corresponding items in the excavation management window.

Past data are displayed in the window.

Theoretical values are shown in yellowish green, upper and lower limits in green and data in red.

Window

Sediment volume and dry sand volume window

1-5Trend Graph WindowFeatures

Various signals from the shield machine and the fluid transfer equipment are displayed in real-time.

Various statistical processing are carried out based on the recorded data and the results are graphically shown in chronological order.

Clicking on the left button of the mouse on each graph opens a window for change of graph items.

Past signal data are read and graphically shown.

The lateral axis is time in these windows.

Past data are displayed in the window.

Window

Trendgraphwindow

1-6Meter WindowFeatures

Various signals from the shield machine and the fluid transfer equipment are displayed in real-time.

Clicking on the left button of the mouse on each meter opens a window for change of meter items and setting of upper and lower limits.

When the current value is between the upper and lower limit, it is shown in green. When it exceeds the upper or lower limit, it is shown in red. This setting is not related to the excavation control of the system.

Window

Meter window

1-7Ring WindowFeatures

Setting a ring number allows the final value of the designated ring to be graphically displayed on the screen.

Clicking on the left button of the mouse on each graph opens a window for change of meter items.

Past rings are displayed in the window.

Window

Ring window

1-8Ring Report Monitor WindowFeatures

Excavation data per ring are recorded as the shield machines moves.

Various signals from the shield machine and the fluid transfer equipment are displayed in real-time.

Excavation data per ring is recorded and saved upon completion of excavation of the shield machine and the saved data are printed out as a ring report.

Various statistical processing are carried out based on the recorded data and the results are graphically shown.

The average and final value per every 100 mm of stroke is shown.

Window

Ring report monitor window

1-9Printing of Ring Report and Daily Report(Ring report printing window

When the ring report print button is pressed, the ring report printing window opens. Inputting the starting ring number and the ending ring number starts printing of the designated ring report.

(Daily report printing window

Pressing the daily report print button shows the daily report printing window. Inputting the dates starts printing of the designated daily report.

1-10Setting Window

Operation

Open the "set" in the menu to open the setting window.

Select a setting item, input a number with the numeric keypad, and click "OK." Click "cancel" to return to the original window.

Detailed explanation

Next excavation ring number

Next excavation ring numbers are used for ring titles of ring reports and daily reports. When excavation is carried out with the same ring number, the data are overwritten and deletes the previous data. Make sure before excavation.

True specific gravity and water content ratio

These values are used to calculate the amount of dry sand and the theoretical amount of dry sand.

Completion judgment stroke

When the stroke is shortened to the value beyond the setting, that ring is considered to have been completed, and the ring data is input.

Standard deviation ring number

To calculate the standard deviation, return the current ring number to the ring of a few minutes ago.

1-11Data Storage

Excavation data storage database

Excavation data are stored in the database in the fluid transfer equipment server computer. The display value of the excavation control system operation panel is linked to the computer value of statistical processing for excavation data to ensure that they both have the same value.

As the database contents may be freely picked out for excavation data statistic processing, slips of various forms and various graphical presentations can be easily prepared.

Data storage items

The data handled by the system are divided into two types. A list is shown in the next page.

(1)Measurement data

By analog input signals

By digital input signals

(2)Calculation data

Calculated by adding operation to the calculation data

Ring number

When data are stored in the hard disk, ring numbers are used as indexes. Therefore, it is necessary to make appropriate settings of ring numbers during excavation. This operation is done by "change of set value," but in order to reduce workload, it is so designed to automatically update the ring number upon completion of operation. If a discrepancy occurs between the actual ring used and the set ring number for some reason, it is necessary to immediately change the wrong ring number to a correct one.

When excavation is carried out with the same ring number set, the data are overwritten to delete the previous data.

Data conversion

Designating the ring and data using the "data conversion" on the window (ring, daily report, trend and final value) prepares a csv file (file readable b Excel) in the D:CsvData folder.

These files may be used for data analysis by other PCs.

1-12Other functionsHard copying function

Click the icon at the right end to get a hard copy of what is displayed in the window.

Program bootEnd all programs and double-click "automatic boot" on the desktop of your PC. Or reboot your PC. The program will activate automatically.1-13Formula list (1)Excavation deviation flow rate

The excavation deviation flow rate is used to determine the intake of removed water and ground water during excavation.

The equation used for calculation is shown below.

where

Q:Excavation deviation flow rate (m3/minute)

Q2:Discharge slurry flow rate (m3/minute)

Q1:Feed slurry flow rate (m3/minute)

A:Excavation section area (m2)

S:Jack speed (meters/minute)

If the result of the above is Q = 0: there is no removed water

If the result of the above is Q > 0: ground water is being taken in

If the result of the above is Q < 0: removed water is present

(2)Volume of excavated earth

The total excavation volume is determined by measuring and estimating the feed slurry flow rate and discharge slurry flow rate. However, the measurements will fluctuate greatly depending on the intake of removed water and ground water, so these values are used as indicators for control of the quantity of excavated earth.

The equation used for calculation is shown below.

Q = Q2 x dt = Q1 x dt

where

Q:Estimated value for volume of excavated earth (m3)

Q2:Discharge slurry flow rate (m3/minute)

Q1:Feed slurry flow rate (m3/minute)

dt:Excavation time (minutes)

The theoretical excavation volume for this is as follows:

V = A x St

where

V:Theoretical excavation volume (m3)

A:Excavation section area (m3)

St:Excavation advance stroke (meters)

(3)Quantity of dry sand excavated

The flow rates for the feed and discharge slurry are measured and specific gravity values are calculated, and these values are estimated to determine the quantity of dry sand excavated. This is not affected by the determination of the actual volume of sediment taken in by excavation, or by the water removed from the slurry and the amount of ground water taken in.

In general, the data is subjected to statistical processing. The value is controlled to the average 3%. If the data values increase linearly as the excavation advances, the excavation is proceeding normally. If non-continuous points are produced, this indicates a ground collapse or the like.

The theoretical quantity of dry sand excavated is calculated as shown below.

where

G:Theoretical quantity of dry sand (m3)

V:Theoretical excavation volume (m3)

K:Moisture content (vol %)

Equation for calculation of dry sand excavated

where

G:Estimated value for quantity of dry sand excavated (m3)

2:Specific gravity of discharge slurry

2:True specific gravity of sediment particles

Q2:Discharge slurry flow rate (m3/minute)

1:Specific gravity of feed slurry

1:True specific gravity of feed slurry solids

Q1:Feed slurry flow rate (m3/minute)

dt:Excavation time (minutes)

WindowChangeBotton

WindowDisplay

During excavation

Turned off

Standing by

Excavation main window button Standing by

Graph window button

Sediment volume and dry sand volume window button

Trend window button

Meter window button

Ring window button

Monitor window button

Print button

Hard copy button

Automatic/manual printing switchover

Current time

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