Method for monitoring and controlling the distribution of drople

Details Method for monitoring and controlling the distribution of drople Method for monitoring and controlling the distribution of drople

1981-11-09

1983-01-04

Hoffman, James R.

Coating processes

Measuring, testing, or indicating

427 10, 356445, G01J 100, B05D 102

Patent

active

043672442

ABSTRACT:
Method for monitoring the weight of glue sprayed on a veneer surface, where the light reflectance from droplet-covered regions on the surface differs from that of uncovered surface regions. According to the method, a beam of light is directed onto the sprayed surface of a relatively moving veneer, and the light reflectance from a zone within the illuminated surface area is detected to produce a signal which varies according to instantaneously detected reflected light level. A signal-handling circuit transforms the signal to a binary data stream composed of one and other data states representing reflected light levels from droplet-covered and uncovered regions on the surface, respectively. The data stream is processed to compute the weight of glue sprayed on the surface.

REFERENCES:
patent: 3185024 (1965-05-01), McCreanor
patent: 3819948 (1974-06-01), Iijima et al.

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