Measuring Light Grids

The measuring light grids are perfectly suitable for monitoring intralogistics processes. An evaluation of how many and which light beams are obstructed is provided and can be used to detect whether the conveyed objects are in the correct and safe transport position.

With a beam distance of 10 millimeters, the height and width of pallets, packages and boxes, too, can be precisely detected.

Simple object dimensioning in intralogistics without complex programming
High resolution for precise object detection
Ease of integration due to a standardized IO-Link interface
Selective evaluation of beams to determine the dimensions or distances between objects

Description

Technology

The ifm measurement light curtains operate similarly to photoelectric through-beam sensors. They consist of transmitters and receivers align in a grid format. Multiple beams of infrared light are transmitted across a space to a mechanically aligned receivers.

Measured area height and width

The measured area height (H) is not the overall height of the light curtain. Rather, it is the area between the first and last light beams. ifm’s measurement light curtains cover heights from 140…2540 mm in increments of 150 mm.

The measured area width (W) is the distance between the transmitter and receiver. ifm’s measurement light curtains can be mounted from 1…10 m apart.

Resolution

Resolution is the sum of the diameter of a beam and the center-to-center distance between adjacent beams. Objects larger than the resolution break the beam. The smaller the resolution, the smaller the object the light curtain can detect. ifm’s measurement light curtains all have 10 mm resolution.