Contact measurement of container dimensional parameters

Details Contact measurement of container dimensional parameters Contact measurement of container dimensional parameters

1993-06-28

1995-05-16

Wirthlin, Alvin

Geometrical instruments

Gauge

Container

33504, 33546, 209531, G01B 7287

Patent

active

054149398

ABSTRACT:
A system and method for contact measurement of dimensional parameters of a container in which rollers coupled to LVDT sensors are placed in contact with a container as the container is rotated about its central axis so that the sensors develop analog signals that vary as a function of variations in geometry of the container. The sensor output signals are fed through multiple input channels to an a/d convertor/multiplexer, which is controlled by a central microcontroller for selecting in turn among the plurality of sensor signals. Within the microcontroller, each sensor signal is compared to a threshold indicative of maximum acceptable deviation of the corresponding dimensional parameter, and the container under test is rejected if the parameter exceeds such threshold. The microcontroller includes facility for real-time display of measured parameters in English or metric units at the selection of an operator, and for communication of measurement data to a remote computer.

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