Video summary

Media Pembelajaran Berbasis Video Animasi Penggunaan Total Station Pengukuran Poligon Tertutup

Main summary

Key takeaways

Educational

Main ideas / lessons conveyed

  • A closed polygon is a polygon whose start and end points coincide, forming a closed region that has both area and perimeter.
  • The video demonstrates a field workflow for measuring a closed polygon (example uses 5 points/stands, labeled around P1–P5) using a Total Station and a recording method:
    • Set up the Total Station at each stand point.
    • Measure backsight and fore/side sights as needed.
    • Store measured points in the instrument’s job/workflow menus.
  • After field measurement, the process shifts to data transfer and processing:
    • Copy measurement data from the Total Station to a flash disk.
    • Import into Sokia Link to export into Excel (.XLS).
    • Convert/export to Notepad format for import to Civil 3D.
  • Finally, it shows how to visualize the measured polygon and compute area in Civil 3D, including adding labels and a map reference image.

Detailed methodology / step-by-step workflow (as presented)

A. Field measurement concept: “closed polygon” using multiple stands

  • Measure a closed polygon using five observation points (stated as “five review points”).
  • Use multiple stands:
    • A stand is the location where the instrument is set up.
    • If a target point is blocked (e.g., by trees/obstacles), move the instrument and set a next stand.
    • The number of stands is adjusted based on field conditions.

B. Total Station setup at the first stand (example: P1)

  1. Install tripod and Total Station at point P1.
  2. Center the instrument:
    • Adjust so the center point is aligned with the middle of the stake.
  3. Level the instrument:
    • Use tripod legs/screws to raise/lower until the bubble level is inside the circle.
    • If the bubble is close, use the screw for fine leveling.
  4. Re-check centering:
    • Ensure the instrument center remains exactly centered.
  5. If the center shifts during leveling:
    • Use the sliding method by opening the tripod plane lock
    • Shift the instrument back to meet centering requirements.
  6. Tilt/level adjustment:
    • Adjust the digital level on the Total Station tilt screen using screw 3 gently
    • Target accuracy: X and Y directions under 10 seconds.

C. Creating a job and preparing menus on the instrument

  1. Create/configure a job:
    • Open Data menu → choose Job
    • Choose Job details → change job name (example: Job 1 → Job 3 by typing)
    • Press OK
  2. Navigate to OBS menu (instrument “tasks”):
    • OBS menu has multiple pages (codes mentioned: P1, P2, P3)
    • Check current page at bottom right of screen; press function button to change pages.
  3. Enter EDM menu (Electronic Distance Measurement setup):
    • Distance measurement options:
      • Prism
      • Non-prism
      • Sheet
    • Select based on target/field conditions:
      • Start with prism for prism use
      • If prism can’t be used (e.g., educated/blocked point), switch to non-prism
  4. Enter Topo menu (Topographic mapping):
    • Available occupation-related options listed:
      • Occupation
      • Backside data
      • Angle data
      • Distance data
      • Coordinate data
      • Distance + coordinates
      • Note
      • View
      • Deletion

D. Entering initial occupation data (at stand P1)

  1. In Topo → Occupation:
    • Enter the stand point coordinates as X, Y, Z
    • Example mapping from mobile topographer values:
      • N0 → X (north)
      • E0 → Y (east)
      • Z0 → Z (elevation)
    • Set:
      • PT = point name
      • HI = instrument height
      • CD = point code to be measured
      • operator = operator name
  2. Set point name example:
    • Change point name to P1
    • Set tool height by measuring with a meter
  3. Set code:
    • Enter code name A
    • A is described as stand code 1
    • Enter operator name
  4. Confirm the occupation setup.

E. Backside data setup (for initial azimuth / north direction)

  1. Go to Backside data menu:
    • Options:
      • Angle
      • Coord
  2. Select Angle for initial azimuth / north direction:
    • Point the instrument toward north using the compass
    • Lock the horizontal screw
    • Direct the helper holding the prism toward north until the prism is aimed
  3. Set initial horizontal angle:
    • Set HR = 0
  4. Press the instrument key (appears as “re” in subtitles).
  5. Enter prism height and set:
    • CD = north (code name “north”)
    • PT = UT (point name “UT”)
  6. Press OK.

F. Measuring forward points with “distance + coordinates” (P2, P3, …)

  1. Go to Distance + coordinates menu.
  2. Measure P2:
    • Install prism at P2
    • Aim with the instrument
    • Lock horizontal and vertical screws
    • Enter prism height (HR prism height)
    • If prism height must be adjusted because of blockage or elevation differences:
      • Use a pole to adjust prism height
    • Set:
      • Code CD = peg
      • Point name PT = P2
    • Press auto
  3. Measure P3:
    • Install prism at P3, aim, lock screws, press auto
    • Reason given:
      • Prism height and code do not change; only the target point changes automatically to P3

G. Creating a foresight point before moving stands (P4 example)

  • A foresight is a reading taken at a point where the elevation needs to be known.
  1. Before moving the instrument from stand P1 to stand for P4:
    • Create a foresight point.
  2. Example: P4 as stand 2
    • Install prism on the P4 peg
    • Aim instrument, lock screws
    • Change:
      • Point code B (stand 2 code)
      • Point name to P4
    • Press auto

H. Moving to the next stand (stand DU / stand P4), and measuring using backsight

  1. After recording P4:
    • Move the instrument to P4.
  2. Set up the instrument again like at stand P1.
  3. In OBS menu → Topo:
    • Select Occupation
    • “Load” the forside point/last point:
      • Use load and select P4 (example says “click last” then point P4)
    • Enter tool height
  4. Go to Backside data menu:
    • Select cort to call previous stand data
    • Call previous stand:
      • Point P1 (press first as described)
  5. Install prism at P1, aim, lock screws, then confirm/press the appropriate key (“rank” in subtitles).

I. Measuring remaining points (example: P5)

  1. Go to Distance + coordinates
  2. Install prism at P5, aim
  3. Lock horizontal and vertical screws
  4. Enter prism height (HR)
  5. Set:
    • Code CD = peg
    • Point name PT = P5
  6. Press auto
  7. Confirm completion:
    • When points P1, P2, P3, P4, P5 are targeted, the measurement is complete.

Data processing workflow (transfer → Sokia Link → Excel/Notepad)

A. Export measurement data from Total Station to flash disk

  1. Insert flash disk into the Total Station USB port.
  2. Go to USB menu:
    • Choose save data
    • Choose S type menu
  3. Find the measurement job, select enter
  4. If “text out” appears → press OK
  5. Confirm job info prompts (job file format shown)
  6. Select OK and wait until copying finishes.
  7. Data is saved on the flash drive.

B. Process using Sokia Link

  1. Install and open Sokia Link on a laptop.
  2. Steps:
    • Select OK on “select project”
    • Select the Total Station icon
    • Choose open data
    • Select measurement data in SDR format (exported from the Total Station)
  3. Export:
    • Select export
    • Choose XLS file
  4. Coordinate export:
    • Select coordinates → OK
  5. Arrange data in Excel:
    • Arrange columns as: North, East, Elevation, description
    • Mentioned shorthand: P, N, E, Z, and D
  6. Copy to Notepad and save:
    • Notepad copy does not need the headers P, N, E, Z, D
    • This is intended to make the file easier to read/import into Civil 3D.

Visualization workflow in Civil 3D (area/perimeter of closed polygon)

A. Import points into Civil 3D

  1. Install Civil 3D and open it.
  2. Civil 3D steps:
    • Enter Civil 3D menu
    • Right-click points → create → import
    • Add files
    • Select the saved Notepad data
  3. Set the correct data format for the “PNZD space delimited file format”
  4. Import/confirm.

B. Label point description / adjust representation

  1. Find the imported point (shortcut mentioned: “Z” then zoom/enter).
  2. To add description:
    • Select a point
    • Right-click → point group properties
    • Change “none” to point elevation description
  3. Adjust scale of point description.

C. Draw polygon and calculate area

  1. Create a line between points using polyline:
    • Form the polygon connecting the points to make the closed boundary
  2. Compute polygon area:
    • Select the polyline line
    • Type li in keyboard and enter
    • “li” provides area and length
    • Select the area result and copy the number
  3. Add text label:
    • Type T and enter
    • Paste the copied area value
    • Adjust letter size and add units (“meter” unit mentioned).

D. Add a reference map image (Google Earth) and georeference

  1. Insert a photo/map image from Google Earth:
    • Open Google Earth
    • Search measurement location
  2. Create two reference points:
    • Reopen Civil 3D/3D step interface
    • Copy coordinates of point A (edit point) → input as reference point
    • Create reference point B similarly
  3. Save the map image.
  4. In Civil 3D:
    • Insert the saved map image
    • Adjust image scale and align using reference points A and B
  5. Finalize the visualization:
    • Tidy image by adding shading to polygons
  6. Output:
    • The final process yields the shape and area of the closed polygon.

Speakers / sources featured (as named in subtitles)

  • Sokia Link (application)
  • Sokia Total Station (instrument type/brand; also implies the software supports it)
  • Civil 3D (software)
  • Google Earth (used for map reference image)
  • Notepad (used for saving copied point data)
  • Excel (.XLS) (export target)

Original video