Process for monitoring a device for automatically detecting and

Details Process for monitoring a device for automatically detecting and Process for monitoring a device for automatically detecting and

1989-12-29

1991-04-02

Raevis, Robert

Measuring and testing

Testing of apparatus

H04N 718

Patent

active

050038311

ABSTRACT:
In a process for monitoring a device for automatically detecting and evaluating surface cracks by means of magnetic powder or the dye penetration process comprising an image pick-up camera and a digital image processing and control unit, a typical defect pattern is projected by means of a projector onto the surface of the article to be examined in the pick-up region of the image pick-up camera and registered, and a defect indication is triggered if the device ceases to operate reliably.

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