The FJD Trion P1 Handheld LiDAR Scanner is a versatile and powerful tool designed to deliver high-quality scanning results in a variety of environments. Whether you are working indoors, outdoors, or even underground, the P1 can handle it all without the need for GNSS or an additional light source. This makes it the perfect solution for scanning various scenarios such as buildings, rooms, parking lots, mine tunnels, bridges, and parks. In this blog post, we will be sharing some tips and tricks to help you achieve the best LiDAR scans with your FJD Trion P1 LiDAR Scanner. So, let's dive right in and explore how to make the most of this incredible device.
Environment Considerations
The P1 Handheld LiDAR Scanner excels in constructing maps and saving point cloud data in real-time, making it ideal for indoor, outdoor, and underground surveying scenarios. However, there are some situations where the P1 may not perform optimally. Keep these points in mind when using the product:
1. Avoid scanning areas with large groups of moving people or objects, as the P1 requires static data. Operate the P1 alone during scanning, and have any partners walk behind you to avoid being scanned.
2. Steer clear of areas with a large amount of glass, as scanning will be affected by specular refraction and reflection.
3. Be cautious in spaces with similar structures (e.g., passages and mazes with no geometric differences in walls) and in spaces without clear structures (such as large, open lawns and squares), as the P1 relies on real-time matching of 3D environments and its accuracy may be affected.
4. Ensure the area around the P1 is clear during initialization. It is recommended to initialize the device at a certain height instead of on the ground.
5. Refrain from scanning areas with moving people and vehicles, such as crossroads or busy plazas.
By following these guidelines, you can optimize the performance of your FJD Trion P1 SLAM Scanner and achieve the best possible LiDAR scans in various environments.
Loop Closure
LiDAR sensors accumulate error over time, and loop closures involve revisiting a known location during scanning. This process allows the system to correct any accumulated errors, align the newly acquired data with previously captured data, and minimize drift. To maximize the accuracy of your scans, consider the following tips:
1. Plan your path ahead of the scan: Proper path planning ensures mapping accuracy and helps you determine the best routes for loop closures.
2. Close the loop at start and end positions: Closing the loop at the beginning and end of your scan helps minimize cumulative errors. To do this, resurvey a known position with at least a 5-meter overlap.
3. Follow recommended scanning patterns: The green paths in the user manual indicate the best scanning patterns for optimal results.
4. Close loops as often as possible: Minimize tracking errors and drift by closing multiple smaller loops in larger spaces instead of one big loop.
Transitioning Between Environments
Transitioning between environments, such as moving between rooms or from indoors to outdoors, can impact the quality of your scans. To ensure optimal LiDAR scans, consider the following tips:
1. Moving Between Rooms:
- Open all doors before starting the scan.
- Do not scan while doors are being opened.
- If there are not enough features in front of you or you are walking too fast, point the P1 towards the room you've already scanned and walk slowly through the door, ensuring that the scanner can view features on both sides of the doorway.
2. Indoor-Outdoor Transitioning:
- When moving from an enclosed environment with many features to an open environment with fewer features, be aware that the scanning quality may be affected.
- Adjust your scanning technique accordingly to ensure optimal results.
3. Making U-Turns or Turns:
- Reduce your walking speed to one-third of your normal pace.
- Make the turn or U-turn slowly and pause for 1-2 seconds, especially when in a corridor, to ensure that the P1 can view features on both sides of the turn.
Long Corridors
When scanning long corridors, follow these recommendations to enhance scanning accuracy:
1. Adjust the P1 Angle:
- In narrow spaces or long corridors, tilt the P1 at an angle of 70° to 90°.
2. Separate Scanning for Corridors:
- If the area to be scanned includes a long corridor, scan the corridor separately from the rest of the space.
3. Manually Add Features:
- For corridors with smooth walls and no obvious features, add objects such as chairs at random intervals of 5 m - 10 m in the farther half of the corridor.
4. Create Small Closed Loops:
- When scanning a long corridor or large space, plan as many small closed loops as possible to improve mapping accuracy.
5. Slow Down at Turns:
- Walk and turn as slowly as possible at the end of the corridor. If the corner leads to another long corridor, pause for 1s - 2s after the turn to collect as much point cloud data as possible.
Holding Instructions
The P1 Handheld LiDAR Scanner has a 360° horizontal and 59° vertical FOV. This wide range allows it to capture numerous features in different environments. To ensure that the P1 Handheld 3D Scanner captures as many features as possible, hold the device with the LiDAR module tilted 30° backward. This holding technique is particularly effective when scanning open spaces with few features, enclosed spaces (such as underground shelters, tunnels, corridors, and sewage pipelines), or open spaces with numerous features (like underground parking lots, residential complexes, and parks).
Walking Speed
To achieve the best possible LiDAR scans with the Trion P1, it is crucial to maintain an appropriate walking speed while scanning. In standard environments, it is recommended to walk at a consistent pace of 1 m/s. This allows the scanner to effectively capture the necessary data for accurate point cloud generation. However, when navigating through narrow spaces like corridors, tunnels, and stair corners, it is advisable to reduce your walking speed to 0.5 m/s or even slower. Slowing down in these confined areas ensures that the P1 Handheld 3D Scanner has ample time to thoroughly scan the space and maintain output accuracy.
Scanning Range
The P1 Handheld LiDAR Scanner requires a minimum distance of 0.5 meters from the target to obtain accurate point cloud data. Keep the device at least 0.5 meters away from walls and ceilings to ensure data quality. In narrow spaces, it is recommended to walk in the middle area for optimal results. Under optimal conditions, the P1 Handheld 3D Scanner can capture data from targets at a maximum distance of 70 meters. However, the scanning accuracy can be guaranteed up to about 40 meters. To ensure the point cloud quality, it is recommended to use the P1 SLAM Scanner within a range of approximately 30 meters.
Proper Maintenance
To ensure the longevity and optimal performance of the P1 Handheld LiDAR Scanner, it is essential to follow these maintenance guidelines:
1. After each use, gently clean the P1 with a soft cotton cloth and store it in its protective case.
2. Handle the P1 with care, avoiding any rough actions such as impact, bending, throwing, or disassembly. Keep the device free from debris.
3. In case of any issues or faults, do not attempt to disassemble the P1 on your own. Instead, contact your local dealer for assistance.
4. Hot swapping is strictly prohibited. Always ensure that the P1 is powered off before connecting or disconnecting any cables.
5. Periodically, gently shake the LiDAR module to check for any abnormal sounds. If you hear any unusual noises, inspect the screws on the module. While anti-loosening measures are in place for all P1 screws, it is important to ensure their security. If any screws are found to be loose, contact your local dealer for support.
6. Only qualified personnel should perform repairs on the P1 LiDAR Scanner.
Final Thoughts
By following the tips mentioned in this blog, you can achieve the best scanning results with the FJD Trion P1 Handheld LiDAR Scanner. Remember that practice makes perfect, and as you gain more experience with the P1 Handheld 3D Scanner, your skills in capturing accurate and detailed data will only improve. We hope these tips prove helpful in your scanning endeavors, and we wish you success in unlocking the full capabilities of the Trion P1 SLAM Scanner.
