The Study Of Continuous Testing For The Fineness Of Cocoon Based On Virtual Instrument

For a long time, theoretical research of raw silk size and theoretical distribution of defect on raw silk have been paid close attention at home and abroad. A single raw silk is made up of bave, therefore the distribution of the fineness and defect parameters of the bave directly affect the quality of raw silk. The weight of bave is usually used to indirectly evaluate its fineness, because the cross-sectional area of bave is extremely difficult to test. For example, the theory of raw silk size is based on the weight of 50-meter-long baves.If the measuring methods of the fineness of bave make a great progress, it will be very helpful to the quality control of the product and the theory of raw silk size.Taking advantage of modern technology photoelectric sensor, automatic measurement and control technology and advanced virtual instrument technology,the research designed a device which was able to measure the fineness of cocoon continuously and high precision.This device adopted two systems,which consists of control and measurement.The control system took charge of separating bave in the process of winding for contrast the weigh and measure results on PIC SCM , advanced integrated hall sensor and solid-state relay; The measure system uses bave fineness measurement tool on the very popular virtual instrument technology, which significantly reduced the development cycle and thedifficulty and improved the reliability and stability of the measuring device. This paper shows better anti-interference capability and the stability of the device on on the device performance testing. It discussed some problems on initial testing and improved the device. Finally, the results showed that the device can be rapid, effective and reliable measurement of bave on a number of testing.