SU547695A1 - Device for measuring single-line linear velocity pulsations - Google Patents

Description

an adjustable delay unit, and a second one through a driver with a pulse coincidence indication device, wherein the output of the adjustable delay unit and the output of the second driver are connected via a pulse expander and a coincidence circuit to a meter for 1 body length pulse. In addition, two keys, two sign indicators, and two coincidence circuits are connected to the device, connected to the input of the medium speed meter, and iio to the other inputs of the I with the electrical pulse pulse meter.

FIG. 1 is given the structure of the device; w FIG. 2 - temporary diagrams of the device; in fig. 3 - diagrams of possible positions of the pulses at the exit of the expanders.

Sensor 1 (see Fig. 1), the first in the direction of movement of the i-pin, through an imgtulse driver 2 and an adjustable delay unit 3, is connected to one of the inputs of a matching 4, pulse equalizer 5 and a matching b circuit. Sensor 7 through pulse driver 8 is connected to the second input of the matching 4 circuit, pulse diverter 9 and the matching circuit 10. The output of the matching circuit 4 is connected to the integrator 11 and the indicator matches 12. The drives of the expander 5 and 9 are connected to the coincidence circuit 13, which connected to pulse generator 14, which is one channel at a time) connected to ipiirrepa 15 via trigger 16 and forlshat 17. 17. Trigger 15 is connected to relay 18 via SIRM {9 and 20, connected to the generator of pulses 21 sockets score 22 and a shshchator of a magnitude gtl-lsai.ii 23. The output of the time relay is connected to the reset inputs of the counter 22, keys 24 and 25, and with the input of the inhibitor trigger 16. Proximity switch; coincidence circuits 6 and 10 are connected by themselves and to the input of the prohibition trigger 16. The coincidence circuits 6 and 10 through CLm m 24 to 25 are connected to the I1 of the markers 26 and 27.

An indicator 28 is connected to the control unit {5th delay, which allows to judge the average speed of the thread.

The device works as follows. The information on random irregularities of the filament in thickness is removed by two sensors of the indexable emf. with membrane sensitive mechanisms, which are located at a fixed distance from each other. The design of the sensors allows, at any average speed of the thread, to receive signals due to the case of a single thickness unevenness of the thread in a frequency range convenient for measuring (by adjusting the gap between / e} sensitive sensor element and pigment center). Frequency range: Ozuskovl also transition time.;) W1-p goats. Inventsinazhin the frequency of following nets up to 30 Hz. The sandal, csmmamip dansch-1kom 1, will be repeated after a certain interval, and the belt (see Fig. 2, plots 1, 2). This time, at a constant distance between the dagik, determines the vegetation

driving speed five. In the imaging unit 2 and 8, the leading edge of the signal from sensors 1 and 7 is separated (plots 3,4). From the output of the forma.p 8 pulses arrive at the coincidence circuit 4. At the second stage, the coincidence circuit proceeds: 4 pulses arrive, delayed in the block of adjustable delay 3 (graph 5). ; Match resterstrtotsto indicator 12.

Iljai setting the value of the average speed of the thread, carried out by blocks 1-4 and 7, 8, 11, 12, at the output of the pulse extenders 5 and 9 (plots 6.7), there are four possible mutual positions of the pulses. The first case (see. C, a) corresponds to speeding relative to the average (). The second case (see Fig. 3, b) corresponds to A-JO, the third case (see Fig. 3, c) corresponds to a decrease in speed relative to the average (-L |)), the fourth case (see Fig. 3d-) - discrepancy of the pulsation value to the selected measurement range, i.e. It is necessary to set the output of 5 n 9 pulses longer duration .:

The scheme coincides with 13 pulses (Fig. 2, plot 8), proportional to the magnitude of the velocity pulsation, to driver 14, which allocates their anterior and posterior front (plots 9, 10). The inhibit trigger 16 has such a state that the leading edge passes through it and the driver 17 triggers the trigger 15, which from: clears the key 20 and starts the time relay 18. The inhibit trigger transfers an external trigger pulse (open plots 11, 12) to the open state. An output pulse will be formed at the output of the trigger 15, the duration of which determines the magnitude of the pulsation (plot 13). The duration is determined by the key 20 (plot 14), the reference pulse generator 21, the counter 22 (plot 15) and the indicator 23. During the operation of the time relay 18, the trigger 16 prohibits, the duration of which depends on the method of reading the readings (visual and automatic ). After latching, the time relay issues a reset pulse (plot 16) to the counter 22 and simultaneously opens the inhibit trigger 16.

The sign of the speed deviation from the average is formed using the matching schemes 6, 10, keys 24, 25, and indicators 26, 27. At the inputs of the matching circuits 6 and 10, the pulses from the driver 8 and 1 delay 3, as well as the leading edge of the pulse from the coincidence circuit 13. Resetting the indications of the character indicators occurs simultaneously with the resetting of the counter 22. The indicator 28 connected to the variable delay unit at the moment of reading and} the indicator 12 allows to judge the average speed of the thread. Thus, the invention makes it possible, by evaluating several measurement results, to judge the degree of pulsation of the thread speed relative to its average speed and makes it possible to study and control the technological process in the preparatory department of weaving production.

Claims (2)

Invention Formula . A device for measuring the pulsations of the linear speed of a single thread, containing a pulse width meter, consisting of a counter, a generator of the other frequency, a time relay and pulse shapers, so that, in order to measure the pulsations of a string of different linear velocities, an average velocity meter is inserted into the device, consisting of two sensors connected one through a driver and an adjustable delay unit, and the second through the form 6 A globalizer with a pulse coincidence indication device, wherein the output of the adjustable delay unit and the output of the second driver are connected via pulse extenders and a coincidence circuit to the pulse width meter. 2. The device according to claim 1, so that, in order to determine the sign of the speed deviation, two keys, two sign indicators and two coincidence circuits are entered into it, connected by one input to the meter average speed, and another input with a meter duration of the pulse pulse. 1