The structure in detail:
- A laser light source sends a precise laser line onto the object to be measured.
- The laser light hits the object surface and is reflected.
- A special camera sensor receives the diffusely reflected laser light at a specific angle.
- The position of each point on the laser line is detected and calculated in height (z).
By knowing the fixed distance between the laser source and the sensor, as well as the angle at which the laser light reaches the sensor, the points of the laser line can be calculated in height (z) and width (x). This results in a precise 2D profile. Multiple profiles taken at a specific distance from an object create a 3D point cloud. These calculations are performed in the 3D Laser Lines Triangulation Sensor using trigonometry and triangulation principles.
The accuracy of these measurements depends on several factors, including the precision of the angle measurement, the wavelength of the laser light, the quality of the optics, and the resolution of the sensor. Careful calibration processes are performed to ensure accurate measurements and account for potential errors or deviations in the system.
Concrete example of preventive maintenance with QuellTech 3D laser scanner
A concrete example shows how our technology is used in the preventive maintenance of production machines:
In a material crushing machine consisting of two large counter-rotating cylindrical rollers, the surface area and number of pins were recorded in a comprehensive 3D data file when new.
During the production process, the pins and the roll surface wear out. Every day, our QuellTech 3D laser scanner captures a complete 3D point cloud of the rolls and compares it with the data from the new condition. As soon as the measured height values of the pins and the roll surface fall below certain minimum values, an alarm is triggered. The QuellTech application software also makes it possible to create a long-term forecast and to specifically plan the timing of upcoming maintenance measures.
This approach makes it possible to plan the intervals between maintenance flexibly, yet precisely and with foresight, depending on the load on the rolls. As a result, we minimize downtime and maximize the efficiency of your production.