Laser-optical control of slotted gaps

A special inspection machine Kvantron NF 150 was developed to carry out laser-optical inspection of slotted gaps. The inspection machine operation is based on the principle of an optical non-contact method for determining the gap size. The purpose of this testing is:

• Automatic fixation of control values ​​of slotted gaps
• Formation of a single quality control report for slotted gaps with a conclusion about the suitability of filter products in accordance with the manufacturer requirements.

The basis of the system is an optical scanner or micrometer, which consists of an industrial CMOS sensor, a bi-telecentric aberration-free lens and industrial illumination of the measured area. The inspection machine control is built through the graphical interface of the touch screen of the system computing unit.

The inspection machine operator logs in and selects the appropriate filter slot test program. After the automatic self-tuning procedure, the system starts scanning the filter surface. The image from the scanner sensor goes to the computing unit for further processing.

Based on mathematical algorithms and data from external and internal calibration of the system, a calculation is made based on the values ​​of the tested filter surface slotted gaps. Data on these calculations are displayed on the computer system in real time.

Thus, the inspection machine makes possible to produce:

• Collecting statistics of filter slotted gaps in accordance with the testing program
• Processing statistics of measurements with the determination of the centre and variance of the measurements distribution.
• Generation of a report on the distribution of slotted gaps in pdf-file format
• Fixation of places with a defective slotted gap with the ability to identify defective areas using the positioning of the laser-optical system