LIDAR and options

Help & Support Robot Parts
1

Hi everyone,

I need some piece of equipment capable of making a fast and accurate geometric survey of concrete elements.
By “survey” I mean collecting data of the geometry of the elements.
The elements’ dimensions may range from 15x15x60 cm to 25x60x300 cm, and I need to test a lot of them so I need something fast.

I’m thought of buying a LIDAR, but there are so many models and types that I don’t know which one is the most cost/efficient for my purposes.
Also, there might be other types of equipment that could satisfy my needs.

Any suggestions?

Thanks to all!

Agustin

2

Hi Agustin,

We do offer many LIDAR options, but not all of them would be suitable for your situation.

One of the main factors would be what accuracy you need for your measurements. In most cases, the accuracy lowers as distance increases.

For example, the LIDAR-Lite v3 has an accuracy of ±2.5 cm at up to 40 m. At shorter ranges / with good reflectivity, it would most likely be much better, in the range of ±1 cm.

We also have other products that are more oriented towards SLAM, such as the RPLidar A2. These are better suited for scanning rooms and creating 2D/3D maps.

Please give us more details about what kind of use and data you expect out of your sensor so we can offer better advice.

Sincerely,

3

Thanks for your answer Sebastien,

I will have concrete blocks with dimensions that may range between 15x15x60 cm to 25x60x300 cm, or so. They might be prismatic or cylindrical. I need to measure their geometry. I could do it using a metric tape, and that would work. But it would take me a long time because I will have a lot of these specimens (say 50 or 60). I would like to have a good accuracy, better than when you measure “by hand” using a metric tape. Say +/- 1mm or if possible +/- 0.1 mm. I will have full access to the specimens.

Please let me know if you need more information. Thanks!

Agustin

4

Hi Agustin,

Thank you for the extra details.

Hobbyist-grade LIDARs will not give you this kind of accuracy or resolution (mm).

For such quality of distance measurement, you will need to obtain industrial grade equipment, such as:
Loke 0.2 to 35m Industrial Laser Distance Meter (10Hz)
Loke 0.2 to 35m Industrial Laser Distance Meter (50Hz)
Loke 0.2 to 30m Industrial Laser Distance Meter (10Hz)

Even then, their absolute accuracy is ±2 mm (best case). Of course, obtaining the LIDAR device is not enough. You will need to create software to handle the scanning and reconstruction of the data points to obtain the various shapes you described.

Sincerely,

5

Thanks!