Total Station: Operation, Uses, and Advantages

Total Station: Operation, Uses, and Advantages

Welcome to our comprehensive guide on the operation, uses, and advantages of total stations. At Sunder Trading Company, we are committed to providing you with valuable insights and in-depth knowledge to help you understand the power of total stations in surveying and achieve optimal results in your projects.

What is a Total Station?

A total station is a sophisticated electronic instrument widely used in modern surveying and construction applications. It combines the functionality of a theodolite (for measuring angles) and an electronic distance measurement (EDM) device, enabling precise measurements of both horizontal and vertical distances, as well as angles.

How Does a Total Station Work?

A total station utilizes advanced technology to streamline surveying processes. It consists of several key components, including a telescope, EDM unit, electronic data collector, and internal software for data processing and analysis. Let’s delve into each component in detail:

Telescope

The telescope forms the primary visual component of a total station. It allows surveyors to observe and target specific points on the land, structures, or objects of interest. Modern total stations are equipped with high-quality optics, which provide clear and accurate images for precise targeting.

Electronic Distance Measurement (EDM) Unit

The EDM unit employs laser or electromagnetic waves to determine the distance between the total station and the target point. By emitting a beam towards the target and measuring the time it takes for the beam to return, the total station can calculate distances with exceptional accuracy.

Electronic Data Collector

Total stations are equipped with electronic data collectors or onboard computers. These devices facilitate the storage and processing of survey data. Surveyors can input important information, such as coordinates, angles, and distances, directly into the data collector, eliminating the need for manual record-keeping and reducing the chances of human error.

Internal Software

The internal software in a total station enables the processing, analysis, and manipulation of survey data. It allows surveyors to perform various calculations, such as coordinate transformations, area and volume calculations, and coordinate adjustments. The software also provides valuable tools for generating detailed reports and graphical representations of the survey results.

Use of Total Station in Surveying

Total stations find extensive applications in diverse fields, including surveying, construction, engineering, and archaeology. Let’s explore some of the primary uses of total stations:

Land Surveying

Total stations revolutionized land surveying practices by providing accurate and efficient measurements. Surveyors can use total stations to determine the positions of points on the Earth’s surface, establish boundaries, create topographic maps, and conduct various geodetic surveys.

Construction Layout

Total stations play a crucial role in construction layout and site preparation. They allow precise stakeout of reference points, such as corners, columns, and structures, ensuring accurate placement during the construction process. This helps maintain alignment, avoid errors, and achieve superior project outcomes.

Monitoring Deformations

In engineering projects, total stations are utilized to monitor deformations and movements of structures over time. By regularly measuring specific points on the structure, surveyors can detect any changes or shifts, enabling timely interventions and ensuring structural integrity.

Archaeological Surveys

Archaeologists rely on total stations to document and map archaeological sites with exceptional precision. These instruments enable the accurate recording of artifact locations, excavation boundaries, and spatial relationships between different features. The data collected through total stations aids in the interpretation and preservation of historical sites.

Advantages of Total Stations

Total stations offer numerous advantages that make them indispensable tools in modern surveying practices. Here are some key benefits:

High Accuracy

With their advanced measurement capabilities and precise instrumentation, total stations deliver unparalleled accuracy in surveying. They enable surveyors to achieve sub-centimeter level measurements, ensuring reliable and dependable results.

Time Efficiency

Total stations significantly expedite the surveying process compared to traditional methods. Their ability to simultaneously measure angles and distances accelerates data collection, saving valuable time for surveyors and project teams.

Integration with Digital Systems

Total stations seamlessly integrate with digital systems, allowing for efficient data transfer and analysis. Survey data can be easily exported to computer-aided design (CAD) software, Geographic Information Systems (GIS), and other specialized programs for further processing and visualization.

Versatility

Total stations are versatile instruments that can adapt to a wide range of surveying requirements. Whether it’s land surveying, construction layout, or archaeological surveys, total stations offer the flexibility and functionality needed to tackle various applications.

How to Operate a Total Station?

Centering.

A beginner friendly guide on how to operate a total station?

1. Set up the tripod Make sure the legs are spaced at Equal intervals and the head is approximately level. Set the tripod so that the head is Positioned over the surveying Point. Make sure the tripod shoes are firmly fixed in the ground.
2. Install the instrument Place the instrument on the tripod Head. Supporting it with one hand, tighten the centering screw on the bottom of the unit to make sure it is secured to the tripod.
3. Focus on the surveying point looking through the optical plummet eyepiece, turn the optical plummet eyepiece to focus on the reticle. Turn the optical plummet focusing ring to focus on the surveying point.

An advance guide on operating a total station:

1. Set up the Total Station: Find a stable and level surface to set up the instrument. Make sure it is positioned securely. Extend the tripod legs and adjust their height accordingly. Mount the Total Station on the tripod and tighten the locking mechanism.
2. Power on the Total Station: Turn on the instrument by pressing the power button. Some models may require you to hold the button for a few seconds. Wait for the device to initialize.
3. Calibrate the instrument: Before starting measurements, you need to perform calibration to ensure accuracy. Follow the manufacturer’s instructions to perform the calibration process. It typically involves leveling the instrument and setting the horizontal and vertical zeros.
4. Select the desired measurement mode: Total Stations offer various measurement modes, such as angle measurements, distance measurements, or coordinate measurements. Choose the appropriate mode based on your requirements.
5. Aim and sight the target: Look through the eyepiece and aim the Total Station at the target point. Adjust the focusing knob until the target appears clear and sharp. Some models may have an electronic viewfinder instead of an eyepiece.
6. Take angle measurements: Use the controls on the instrument to take angular measurements. Most Total Stations have buttons or a joystick for this purpose. Align the crosshairs on the target and press the appropriate button to record the angle. Repeat this process for multiple targets if necessary.
7. Measure distances: Depending on the model, you can measure distances using various methods like reflectorless measurements or using a prism. Follow the manufacturer’s instructions for distance measurement procedures. Aim the instrument at the target and press the appropriate button to measure the distance.
8. Record and store data: Once you have completed the measurements, record the data obtained from the Total Station. Some models allow you to store data internally or transfer it to a computer or external device via USB or Bluetooth.
9. Pack up and power off: When you’re done using the Total Station, power it off following the manufacturer’s instructions. Detach the instrument from the tripod and carefully pack it in its carrying case, ensuring it is protected during transportation.

Electric Level.

In most modern Total Station instead of using plate level you can check the level with the high precision electronic level. The electronic level allows you very precise instrument setting, without rotating the instrument and checking the plate level twice. And you will be free from the maintenance.

Communication

Communication Data import and Export can be done by both serial cables connection and USB drive. Largest USB stick that can be used is 32GB.

Observation Modes

Mode: Fine “r”* / Fine AVG)/ Fine “s”Rapid “r” / Rapid “s” / Tracking

Reflector: Prism* / Sheet / N-prism

PC (Prism constant): -30 mm Normal

Note) when selecting N-prism in Reflector, PC is set to “0”.

Scale: The observed coordinate is affected by this scale factor.

The angle and distance is not affected by this scale factor.

How to operate a Total Station in Urdu

*In this video our technician Farman Khizer teaches how to operate HI-TARGET Total Station 220-R(Model).