Principle and performance comparison of electronic yarn clearer

Principle and performance comparison of electronic yarn clearer

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Photoelectric electronic yarn clearer

The photoelectric electronic yarn clearer converts the geometric quantities (diameter and length) of the yarn defect shape into corresponding electrical pulse signals through the photoelectric system for detection, which is similar to human visual detection of yarn defects. The entire device consists of a light source, a photoreceptor, a signal processing circuit, and an actuator. When the spinning yarn is running at high speed, it passes through the photoelectric detection slot. On one side of the slot is a detection light source composed of an infrared light-emitting tube and an optical device. The optical device acts as a diffuser and produces the effect of a three-dimensional light source, thus detecting flat yarn defects. Abilities are improved. The other side of the slot is a photoelectric receiver, which uses a silicon photovoltaic cell. When yarn defects (thick places, double yarns, details, etc.) appear on the spinning yarn, the light-receiving area of ​​the silicon photovoltaic cell changes, and the amount of light received and the output of the silicon photovoltaic cell change. The photocurrent changes accordingly, and the changing amplitude of the photocurrent is proportional to the changing diameter of the yarn defect. When the running speed of the spinning yarn is constant, the longer the yarn defect is, the longer the photocurrent change is maintained. This is how the photoelectric electronic yarn clearer converts changes in the diameter and length of yarn defects into changes in the amplitude and width of the current pulse output by the photoelectric receiver, thereby achieving the purpose of photoelectric detection of yarn defects. The current pulse output by the photoelectric receiver is processed by the subsequent signal processing circuit. If the amplitude of the electrical signal output by the processing circuit exceeds its set value, the cutter drive circuit is triggered to work, driving the cutter to cut the spinning yarn and remove yarn defects.

Capacitive electronic yarn clearer AAAASE3RETRUY7I8OFG
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