B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
340/123.1
B65H 63/06 (2006.01) G01N 21/89 (2006.01) G01V 8/12 (2006.01)
Patent
CA 1254279
Abstract of the Disclosure Detector circuitry and a system for detecting and/or counting transient events such as the passage of broken filament ends in an article such as a fiber glass strand, and for thereby determining the quality of the article being measured, is disclosed. Optical detectors are arranged to produce output pulses for each measured event, and each includes amplifier means and at least one threshold detector for producing a count pulse representing the measured event. Each detector circuit further includes a feedback loop incorporating an integrator and a drive amplifier for the optical detector light source for stabilizing the light output. An alarm is connected to the output of the drive circuit to monitor the light source current level, so as to measure changes in the light output. Count outputs from the detector circuits are fed to corresponding counters, and at periodic intervals the data contents of the counters are shifted to corresponding latch circuits under the control of a computer or microprocessor. The counters are reset, and the latch circuits are selected sequentially to shift their data contents to corresponding storage locations in the computer or in an external memory such as a disc for processing to obtain an average value for the number of events per unit time or per unit length of an article being measured.
510535
Borden Ladner Gervais Llp
Ppg Industries Ohio Inc.
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