Method for measuring weft yarn tension of polyester weaving machine based on multithreading

A measurement method and technology of multi-thread technology, applied in the field of weft tension measurement of polyester mesh looms based on multi-thread, can solve the problems of no display tension curve, unsatisfactory precision and accuracy, etc., and achieve automation and informatization The effect of high degree and large amount of measurement data

Inactive Publication Date: 2010-12-01
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

Or there is no intuitive function of displaying the tension curve, and the precision and accuracy of the results are unsatisfactory

Method used

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  • Method for measuring weft yarn tension of polyester weaving machine based on multithreading
  • Method for measuring weft yarn tension of polyester weaving machine based on multithreading
  • Method for measuring weft yarn tension of polyester weaving machine based on multithreading

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Embodiment Construction

[0015] The hardware module of USB data acquisition system is mainly composed of multi-channel analog switch, A / D converter, microcontroller chip, USB interface chip, FIFO memory and clock signal circuit. The block diagram of the overall hardware structure is as follows: figure 1 shown.

[0016] After the PC resets the acquisition board, first set the parameters such as the number of channels and acquisition frequency of the acquisition board, then release the reset, and start the data collector as required. After the acquisition board is started, the acquisition results are stored in the FIFO. When the collection board collects a certain amount of data, the data collection thread sends a signal (SetEvent) to the user interface thread, and the data collection thread continues to collect data at the same time. After the user interface thread receives the signal, it reads the collected data on the FIFO of the collection board and judges (if there is a defect, outputs a high lev...

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Abstract

The invention discloses a method for measuring a weft yarn tension of a polyester weaving machine based on multithreading, which is characterized in that the weft yarn tension is on-line measured and real-time displayed by using a multithreading technique and a speedy acquisition system. A data speedy acquisition system is used. A system hardware module comprises a sensor, a signal regulator, an A/D converter, a micro controller chip, a USB interface chip, a FIFO memorizer and a clock signal circuit, and the like. The multithreading technique comprises a data acquisition threading and a user interface threading. In the weaving process of the weaving machine, as shooting-in, the data acquisition threading has a higher priority working threading in order to ensure the data acquisition for high-capacity continuous data. When the weaving machine is not shooting-in, the user interface threading will recover the running state immediately and rapidly treat the data, such as drawing a tension curve in a screen window, saving, and the like. The method takes full advantage of the weaving machine, realizes the on-line measurement for the weft yarn tension and the real-time display for the tension curve, has concise outlook, realizes high degree of automation, and promotes the weaving quality of the texture.

Description

technical field [0001] The invention relates to a method for measuring the tension of the weft yarn in a polyester net loom and an implementation technology, and is also suitable for measuring the tension of the weft yarn of a common loom. Background technique [0002] In the fabric production process, weft yarn tension is a very important factor, and its size directly affects the quality of semi-finished and finished products. In addition, the weft yarn tension is not a constant throughout the weft insertion process, but a fluctuating quantity. Therefore, in order to truly reflect the magnitude of the weft tension and its changing law, it is necessary to perform a dynamic test on the weft tension and record its change process in order to analyze the cause, seek suitable weft insertion process parameters, and take necessary measures to control the yarn tension. Within the scope of improving yarn quality and equipment utilization, it also provides a basis for evaluating equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/04D03J5/24
Inventor 杨涛徐大华李阳
Owner TIANJIN POLYTECHNIC UNIV
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