Laser Range Sensor Application Considerations

Laser range sensor application considerations

Laser ranging sensors have become more and more important in industrial applications in the increasingly developed technological warfare. Therefore, problems are plagued by users during use, and it is necessary to pay attention to

1, the instrument installation needs a stable and fixed platform;

2, the laser ranging sensor avoids strong light;

3, the installation should be wired according to the wiring instructions

Color effect

The color of the object being measured affects the resolution and accuracy of the measurement. White, red, yellow, and orange targets have higher reflectance than green, blue, or black targets. The resolution parameters listed in this catalog are for white targets. The resolution of a black target is more than four times worse than the resolution of a white target.

The magnitude of the reflectivity of the target in a variety of different colors. In general, the resolution is affected by the square of the received light intensity. For example, the light intensity is reduced by a factor of nine and the resolution is reduced by a factor of three.

Target requirement

The Bonner triangulation sensor relies on the diffuse reflection of light from the target. Diffuse reflection is the equivalent scattering of light by the target in all directions. If the surface of the target is a mirror, then there is only one direction of light reflection. The LG5, LG10, and Q50 series sensors do not work for specular reflection targets. Triangulation sensors also require the surface of the object to be non-porous and opaque for accurate measurements. Translucent targets or porous materials, such as plastics, foams, etc., can cause measurement errors in the sensor.

Metal surface

For bare metal surfaces, although they have some diffuse reflection, their surface reflectance is not uniform; therefore, the repeatability of different inspection points or the same inspection point on the metal surface is reduced. This effect varies with different metals and depends on the coating of the metal surface. Therefore, for metal samples we recommend testing first to achieve the desired repeatability.